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<h2></h2>
<div class="highlight"><pre><span></span><span class="c1"># Filename: A10_2D_baseline_server.py</span>
<span class="c1"># Written by: James D. Miller</span>
<span class="kn">import</span> <span class="nn">sys</span><span class="o">,</span> <span class="nn">os</span>
<span class="kn">import</span> <span class="nn">pygame</span>
<span class="kn">import</span> <span class="nn">datetime</span>
<span class="kn">import</span> <span class="nn">math</span>
<span class="c1"># PyGame Constants</span>
<span class="kn">from</span> <span class="nn">pygame.locals</span> <span class="kn">import</span> <span class="o">*</span>
<span class="kn">from</span> <span class="nn">pygame.color</span> <span class="kn">import</span> <span class="n">THECOLORS</span>
<span class="c1"># PyGame gui</span>
<span class="kn">from</span> <span class="nn">pgu</span> <span class="kn">import</span> <span class="n">gui</span>
<span class="c1"># Import the vector class from a local module (in this same directory)</span>
<span class="kn">from</span> <span class="nn">vec2d_jdm</span> <span class="kn">import</span> <span class="n">Vec2D</span>
<span class="c1"># Networking</span>
<span class="kn">from</span> <span class="nn">PodSixNet.Server</span> <span class="kn">import</span> <span class="n">Server</span>
<span class="kn">from</span> <span class="nn">PodSixNet.Channel</span> <span class="kn">import</span> <span class="n">Channel</span>
<span class="kn">import</span> <span class="nn">socket</span>
<span class="c1">#=====================================================================</span>
<span class="c1"># Classes</span>
<span class="c1">#=====================================================================</span>
<span class="k">class</span> <span class="nc">ClientChannel</span><span class="p">(</span><span class="n">Channel</span><span class="p">):</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
<span class="n">Channel</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
<span class="k">pass</span>
<span class="k">def</span> <span class="nf">Network_CN</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">data</span><span class="p">):</span>
<span class="c1">#global env</span>
<span class="c1"># Store incoming data in the client objects.</span>
<span class="n">speaking_client_name</span> <span class="o">=</span> <span class="s1">'C'</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="n">data</span><span class="p">[</span><span class="s1">'ID'</span><span class="p">])</span>
<span class="c1"># Check to make sure that this client is still in the client dictionary.</span>
<span class="k">if</span> <span class="n">speaking_client_name</span> <span class="ow">in</span> <span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">:</span>
<span class="c1"># Mouse controls.</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">cursor_location_px</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="s1">'mXY'</span><span class="p">]</span> <span class="c1"># mouse x,y</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">buttonIsStillDown</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="s1">'mBd'</span><span class="p">]</span> <span class="c1"># mouse button down (true/false)</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">mouse_button</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="s1">'mB'</span><span class="p">]</span> <span class="c1"># mosue button number (1,2,3,0)</span>
<span class="c1"># Jet controls.</span>
<span class="c1"># Make the s key behave as a toggle.</span>
<span class="c1"># If key is up, make it ready to accept the down ('D') event.</span>
<span class="k">if</span> <span class="p">(</span><span class="n">data</span><span class="p">[</span><span class="s1">'s'</span><span class="p">]</span> <span class="o">==</span> <span class="s1">'U'</span><span class="p">):</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">key_s_onoff</span> <span class="o">=</span> <span class="s1">'ON'</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">key_s</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="s1">'s'</span><span class="p">]</span>
<span class="c1"># If getting 'D' from network client and the key is enabled.</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">key_s_onoff</span> <span class="o">==</span> <span class="s1">'ON'</span><span class="p">):</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">key_s</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="s1">'s'</span><span class="p">]</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">key_a</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="s1">'a'</span><span class="p">]</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">key_d</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="s1">'d'</span><span class="p">]</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">key_w</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="s1">'w'</span><span class="p">]</span>
<span class="c1"># Freeze controls.</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">key_f</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="s1">'f'</span><span class="p">]</span>
<span class="c1"># Gun controls.</span>
<span class="c1"># Make the k key behave as a toggle.</span>
<span class="c1"># If key is up, make it ready to accept the down ('D') event.</span>
<span class="k">if</span> <span class="p">(</span><span class="n">data</span><span class="p">[</span><span class="s1">'k'</span><span class="p">]</span> <span class="o">==</span> <span class="s1">'U'</span><span class="p">):</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">key_k_onoff</span> <span class="o">=</span> <span class="s1">'ON'</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">key_k</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="s1">'k'</span><span class="p">]</span>
<span class="c1"># If getting 'D' from network client and the key is enabled.</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">key_k_onoff</span> <span class="o">==</span> <span class="s1">'ON'</span><span class="p">):</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">key_k</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="s1">'k'</span><span class="p">]</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">key_j</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="s1">'j'</span><span class="p">]</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">key_l</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="s1">'l'</span><span class="p">]</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">key_i</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="s1">'i'</span><span class="p">]</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">speaking_client_name</span><span class="p">]</span><span class="o">.</span><span class="n">key_space</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="s1">' '</span><span class="p">]</span>
<span class="c1"># Go through the list of client, adding 1 to each that isn't the current SENDING client.</span>
<span class="c1"># Use this to block rendering of objects of clients that have disconnected.</span>
<span class="c1"># Note: this technique will never act to stop rendering the last client's data, because once the last</span>
<span class="c1"># network client disconnects, this counting will stop and it will never reach the limit that inhibits</span>
<span class="c1"># rendering.</span>
<span class="k">for</span> <span class="n">client_name</span> <span class="ow">in</span> <span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">:</span>
<span class="k">if</span> <span class="p">(</span><span class="n">client_name</span> <span class="o">!=</span> <span class="n">speaking_client_name</span><span class="p">):</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">client_name</span><span class="p">]</span><span class="o">.</span><span class="n">Qcount</span> <span class="o">+=</span> <span class="mi">1</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">client_name</span><span class="p">]</span><span class="o">.</span><span class="n">Qcount</span> <span class="o">=</span> <span class="mi">0</span>
<span class="c1"># print client_name, env.clients[client_name].Qcount</span>
<span class="c1"># print "========================================"</span>
<span class="k">def</span> <span class="nf">Close</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="nb">print</span> <span class="s2">"A network client game pad has been closed."</span>
<span class="k">class</span> <span class="nc">GameServer</span><span class="p">(</span><span class="n">Server</span><span class="p">):</span>
<span class="n">channelClass</span> <span class="o">=</span> <span class="n">ClientChannel</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
<span class="n">Server</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">client_count</span> <span class="o">=</span> <span class="mi">0</span>
<span class="k">pass</span>
<span class="c1"># This runs when each client connects.</span>
<span class="k">def</span> <span class="nf">Connected</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">channel</span><span class="p">,</span> <span class="n">addr</span><span class="p">):</span>
<span class="c1">#global env</span>
<span class="c1">#print 'new connection (channel, addr):', channel, addr</span>
<span class="bp">self</span><span class="o">.</span><span class="n">client_count</span> <span class="o">+=</span> <span class="mi">1</span>
<span class="k">if</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">client_count</span> <span class="o"><=</span> <span class="mi">10</span><span class="p">):</span>
<span class="n">channel</span><span class="o">.</span><span class="n">Send</span><span class="p">({</span><span class="s2">"action"</span><span class="p">:</span> <span class="s2">"hello"</span><span class="p">,</span> <span class="s2">"P_ID"</span><span class="p">:</span><span class="bp">self</span><span class="o">.</span><span class="n">client_count</span><span class="p">})</span>
<span class="n">client_name</span> <span class="o">=</span> <span class="s1">'C'</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">client_count</span><span class="p">)</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">client_name</span><span class="p">]</span> <span class="o">=</span> <span class="n">Client</span><span class="p">(</span><span class="n">env</span><span class="o">.</span><span class="n">client_colors</span><span class="p">[</span><span class="n">client_name</span><span class="p">])</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">channel</span><span class="o">.</span><span class="n">Send</span><span class="p">({</span><span class="s2">"action"</span><span class="p">:</span> <span class="s2">"hello"</span><span class="p">,</span> <span class="s2">"P_ID"</span><span class="p">:</span><span class="mi">0</span><span class="p">})</span>
<span class="nb">print</span> <span class="s2">"self.client_count ="</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">client_count</span>
<span class="k">class</span> <span class="nc">Client</span><span class="p">:</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">cursor_color</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">cursor_location_px</span> <span class="o">=</span> <span class="p">(</span><span class="mi">0</span><span class="p">,</span><span class="mi">0</span><span class="p">)</span> <span class="c1"># x_px, y_px</span>
<span class="bp">self</span><span class="o">.</span><span class="n">mouse_button</span> <span class="o">=</span> <span class="mi">1</span> <span class="c1"># 1, 2, or 3</span>
<span class="bp">self</span><span class="o">.</span><span class="n">buttonIsStillDown</span> <span class="o">=</span> <span class="kc">False</span>
<span class="c1"># Jet</span>
<span class="bp">self</span><span class="o">.</span><span class="n">key_a</span> <span class="o">=</span> <span class="s2">"U"</span>
<span class="bp">self</span><span class="o">.</span><span class="n">key_s</span> <span class="o">=</span> <span class="s2">"U"</span>
<span class="bp">self</span><span class="o">.</span><span class="n">key_s_onoff</span> <span class="o">=</span> <span class="s2">"ON"</span>
<span class="bp">self</span><span class="o">.</span><span class="n">key_d</span> <span class="o">=</span> <span class="s2">"U"</span>
<span class="bp">self</span><span class="o">.</span><span class="n">key_w</span> <span class="o">=</span> <span class="s2">"U"</span>
<span class="c1"># Gun</span>
<span class="bp">self</span><span class="o">.</span><span class="n">key_j</span> <span class="o">=</span> <span class="s2">"U"</span>
<span class="bp">self</span><span class="o">.</span><span class="n">key_k</span> <span class="o">=</span> <span class="s2">"U"</span>
<span class="bp">self</span><span class="o">.</span><span class="n">key_k_onoff</span> <span class="o">=</span> <span class="s2">"ON"</span>
<span class="bp">self</span><span class="o">.</span><span class="n">key_l</span> <span class="o">=</span> <span class="s2">"U"</span>
<span class="bp">self</span><span class="o">.</span><span class="n">key_i</span> <span class="o">=</span> <span class="s2">"U"</span>
<span class="bp">self</span><span class="o">.</span><span class="n">key_space</span> <span class="o">=</span> <span class="s2">"U"</span>
<span class="c1"># Freeze it</span>
<span class="bp">self</span><span class="o">.</span><span class="n">key_f</span> <span class="o">=</span> <span class="s2">"U"</span>
<span class="c1"># Zoom</span>
<span class="bp">self</span><span class="o">.</span><span class="n">key_b</span> <span class="o">=</span> <span class="s2">"U"</span>
<span class="bp">self</span><span class="o">.</span><span class="n">key_n</span> <span class="o">=</span> <span class="s2">"U"</span>
<span class="bp">self</span><span class="o">.</span><span class="n">key_m</span> <span class="o">=</span> <span class="s2">"U"</span>
<span class="bp">self</span><span class="o">.</span><span class="n">key_h</span> <span class="o">=</span> <span class="s2">"U"</span>
<span class="bp">self</span><span class="o">.</span><span class="n">selected_puck</span> <span class="o">=</span> <span class="kc">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">cursor_color</span> <span class="o">=</span> <span class="n">cursor_color</span>
<span class="bp">self</span><span class="o">.</span><span class="n">Qcount</span> <span class="o">=</span> <span class="mi">0</span>
<span class="bp">self</span><span class="o">.</span><span class="n">bullet_hit_count</span> <span class="o">=</span> <span class="mi">0</span>
<span class="bp">self</span><span class="o">.</span><span class="n">bullet_hit_limit</span> <span class="o">=</span> <span class="mf">150.0</span>
<span class="c1"># Define the nature of the cursor strings, one for each mouse button.</span>
<span class="bp">self</span><span class="o">.</span><span class="n">mouse_strings</span> <span class="o">=</span> <span class="p">{</span><span class="s1">'string1'</span><span class="p">:{</span><span class="s1">'c_drag'</span><span class="p">:</span> <span class="mf">2.0</span><span class="p">,</span> <span class="s1">'k_Npm'</span><span class="p">:</span> <span class="mf">60.0</span><span class="p">},</span>
<span class="s1">'string2'</span><span class="p">:{</span><span class="s1">'c_drag'</span><span class="p">:</span> <span class="mf">0.2</span><span class="p">,</span> <span class="s1">'k_Npm'</span><span class="p">:</span> <span class="mf">2.0</span><span class="p">},</span>
<span class="s1">'string3'</span><span class="p">:{</span><span class="s1">'c_drag'</span><span class="p">:</span> <span class="mf">20.0</span><span class="p">,</span> <span class="s1">'k_Npm'</span><span class="p">:</span> <span class="mf">1000.0</span><span class="p">}}</span>
<span class="c1">#'string0':{'c_drag': 0.0, 'k_Npm': 0.0}}</span>
<span class="k">def</span> <span class="nf">calc_string_forces_on_pucks</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># Calculated the string forces on the selected puck and add to the aggregate</span>
<span class="c1"># that is stored in the puck object.</span>
<span class="c1"># Only check for a selected puck if one isn't already selected. This keeps</span>
<span class="c1"># the puck from unselecting if cursor is dragged off the puck!</span>
<span class="k">if</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">selected_puck</span> <span class="o">==</span> <span class="kc">None</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">buttonIsStillDown</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">selected_puck</span> <span class="o">=</span> <span class="n">air_table</span><span class="o">.</span><span class="n">checkForPuckAtThisPosition</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cursor_location_px</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">buttonIsStillDown</span><span class="p">:</span>
<span class="c1"># Unselect the puck and bomb out of here.</span>
<span class="bp">self</span><span class="o">.</span><span class="n">selected_puck</span><span class="o">.</span><span class="n">selected</span> <span class="o">=</span> <span class="kc">False</span>
<span class="bp">self</span><span class="o">.</span><span class="n">selected_puck</span> <span class="o">=</span> <span class="kc">None</span>
<span class="k">return</span> <span class="kc">None</span>
<span class="c1"># Use dx difference to calculate the hooks law force being applied by the tether line. </span>
<span class="c1"># If you release the mouse button after a drag it will fling the puck.</span>
<span class="c1"># This tether force will diminish as the puck gets closer to the mouse point.</span>
<span class="n">dx_2d_m</span> <span class="o">=</span> <span class="n">env</span><span class="o">.</span><span class="n">ConvertScreenToWorld</span><span class="p">(</span><span class="n">Vec2D</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cursor_location_px</span><span class="p">))</span> <span class="o">-</span> <span class="bp">self</span><span class="o">.</span><span class="n">selected_puck</span><span class="o">.</span><span class="n">pos_2d_m</span>
<span class="n">stringName</span> <span class="o">=</span> <span class="s2">"string"</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">mouse_button</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">selected_puck</span><span class="o">.</span><span class="n">cursorString_spring_force_2d_N</span> <span class="o">+=</span> <span class="n">dx_2d_m</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">mouse_strings</span><span class="p">[</span><span class="n">stringName</span><span class="p">][</span><span class="s1">'k_Npm'</span><span class="p">]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">selected_puck</span><span class="o">.</span><span class="n">cursorString_puckDrag_force_2d_N</span> <span class="o">+=</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">selected_puck</span><span class="o">.</span><span class="n">vel_2d_mps</span> <span class="o">*</span>
<span class="o">-</span><span class="mi">1</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">mouse_strings</span><span class="p">[</span><span class="n">stringName</span><span class="p">][</span><span class="s1">'c_drag'</span><span class="p">])</span>
<span class="c1"># # Limit the amount of force the cursor string can apply.</span>
<span class="c1"># mouse_string_tension_limit_N = 1000</span>
<span class="c1"># mouse_string_tension_magnitude = cursor_string.tension_2d_N.length()</span>
<span class="c1"># if mouse_string_tension_magnitude > mouse_string_tension_limit_N:</span>
<span class="c1"># cursor_string.tension_2d_N = (cursor_string.tension_2d_N / mouse_string_tension_magnitude) * mouse_string_tension_limit_N</span>
<span class="k">def</span> <span class="nf">draw_cursor_string</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">line_points</span> <span class="o">=</span> <span class="p">[</span><span class="n">env</span><span class="o">.</span><span class="n">ConvertWorldToScreen</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">selected_puck</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="p">),</span> <span class="bp">self</span><span class="o">.</span><span class="n">cursor_location_px</span><span class="p">]</span>
<span class="k">if</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">selected_puck</span> <span class="o">!=</span> <span class="kc">None</span><span class="p">):</span>
<span class="n">pygame</span><span class="o">.</span><span class="n">draw</span><span class="o">.</span><span class="n">line</span><span class="p">(</span><span class="n">game_window</span><span class="o">.</span><span class="n">surface</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">cursor_color</span><span class="p">,</span> <span class="n">line_points</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">line_points</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="mi">1</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">draw_fancy_server_cursor</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">draw_server_cursor</span><span class="p">(</span> <span class="bp">self</span><span class="o">.</span><span class="n">cursor_color</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">draw_server_cursor</span><span class="p">(</span> <span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"black"</span><span class="p">],</span> <span class="mi">1</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">draw_server_cursor</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">color</span><span class="p">,</span> <span class="n">edge_px</span><span class="p">):</span>
<span class="n">cursor_outline_vertices</span> <span class="o">=</span> <span class="p">[]</span>
<span class="n">cursor_outline_vertices</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> <span class="bp">self</span><span class="o">.</span><span class="n">cursor_location_px</span> <span class="p">)</span>
<span class="n">cursor_outline_vertices</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cursor_location_px</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">+</span> <span class="mi">10</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">cursor_location_px</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">+</span> <span class="mi">10</span><span class="p">)</span> <span class="p">)</span>
<span class="n">cursor_outline_vertices</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cursor_location_px</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">+</span> <span class="mi">0</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">cursor_location_px</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">+</span> <span class="mi">15</span><span class="p">)</span> <span class="p">)</span>
<span class="n">pygame</span><span class="o">.</span><span class="n">draw</span><span class="o">.</span><span class="n">polygon</span><span class="p">(</span><span class="n">game_window</span><span class="o">.</span><span class="n">surface</span><span class="p">,</span> <span class="n">color</span><span class="p">,</span> <span class="n">cursor_outline_vertices</span><span class="p">,</span> <span class="n">edge_px</span><span class="p">)</span>
<span class="k">class</span> <span class="nc">Puck</span><span class="p">:</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">pos_2d_m</span><span class="p">,</span> <span class="n">radius_m</span><span class="p">,</span> <span class="n">density_kgpm2</span><span class="p">,</span> <span class="n">puck_color</span> <span class="o">=</span> <span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"grey"</span><span class="p">]):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">radius_m</span> <span class="o">=</span> <span class="n">radius_m</span>
<span class="bp">self</span><span class="o">.</span><span class="n">radius_px</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="nb">round</span><span class="p">(</span><span class="n">env</span><span class="o">.</span><span class="n">px_from_m</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">radius_m</span> <span class="o">*</span> <span class="n">env</span><span class="o">.</span><span class="n">viewZoom</span><span class="p">)))</span>
<span class="bp">self</span><span class="o">.</span><span class="n">density_kgpm2</span> <span class="o">=</span> <span class="n">density_kgpm2</span> <span class="c1"># mass per unit area</span>
<span class="bp">self</span><span class="o">.</span><span class="n">mass_kg</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">density_kgpm2</span> <span class="o">*</span> <span class="n">math</span><span class="o">.</span><span class="n">pi</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">radius_m</span> <span class="o">**</span> <span class="mi">2</span>
<span class="bp">self</span><span class="o">.</span><span class="n">pos_2d_m</span> <span class="o">=</span> <span class="n">pos_2d_m</span>
<span class="bp">self</span><span class="o">.</span><span class="n">vel_2d_mps</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="p">(</span><span class="mf">0.0</span><span class="p">,</span><span class="mf">0.0</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">SprDamp_force_2d_N</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="p">(</span><span class="mf">0.0</span><span class="p">,</span><span class="mf">0.0</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">jet_force_2d_N</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="p">(</span><span class="mf">0.0</span><span class="p">,</span><span class="mf">0.0</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">cursorString_spring_force_2d_N</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="p">(</span><span class="mf">0.0</span><span class="p">,</span><span class="mf">0.0</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">cursorString_puckDrag_force_2d_N</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="p">(</span><span class="mf">0.0</span><span class="p">,</span><span class="mf">0.0</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">impulse_2d_Ns</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="p">(</span><span class="mf">0.0</span><span class="p">,</span><span class="mf">0.0</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">selected</span> <span class="o">=</span> <span class="kc">False</span>
<span class="bp">self</span><span class="o">.</span><span class="n">color</span> <span class="o">=</span> <span class="n">puck_color</span>
<span class="bp">self</span><span class="o">.</span><span class="n">client_name</span> <span class="o">=</span> <span class="kc">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">jet</span> <span class="o">=</span> <span class="kc">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">gun</span> <span class="o">=</span> <span class="kc">None</span>
<span class="c1"># self.hit = False</span>
<span class="c1"># # Bullet data...</span>
<span class="c1"># self.bullet = False</span>
<span class="c1"># self.birth_time_s = env.time_s</span>
<span class="c1"># self.age_limit_s = 3.0</span>
<span class="c1"># If you print an object instance...</span>
<span class="k">def</span> <span class="fm">__str__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="s2">"puck: x is </span><span class="si">%s</span><span class="s2">, y is </span><span class="si">%s</span><span class="s2">"</span> <span class="o">%</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="o">.</span><span class="n">x</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="o">.</span><span class="n">y</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">draw</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># Convert x,y to pixel screen location and then draw.</span>
<span class="bp">self</span><span class="o">.</span><span class="n">pos_2d_px</span> <span class="o">=</span> <span class="n">env</span><span class="o">.</span><span class="n">ConvertWorldToScreen</span><span class="p">(</span> <span class="bp">self</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="p">)</span>
<span class="c1"># Update based on zoom factor</span>
<span class="bp">self</span><span class="o">.</span><span class="n">radius_px</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="nb">round</span><span class="p">(</span><span class="n">env</span><span class="o">.</span><span class="n">px_from_m</span><span class="p">(</span> <span class="bp">self</span><span class="o">.</span><span class="n">radius_m</span><span class="p">)))</span>
<span class="k">if</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">radius_px</span> <span class="o"><</span> <span class="mi">3</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">radius_px</span> <span class="o">=</span> <span class="mi">3</span>
<span class="c1"># # Just after a hit, fill the whole circle with RED (i.e., thickness = 0).</span>
<span class="c1"># if self.hit:</span>
<span class="c1"># puck_circle_thickness = 0</span>
<span class="c1"># puck_color = THECOLORS["red"]</span>
<span class="c1"># self.hit = False</span>
<span class="c1"># else:</span>
<span class="c1"># puck_circle_thickness = 3</span>
<span class="c1"># puck_color = self.color</span>
<span class="n">puck_circle_thickness</span> <span class="o">=</span> <span class="mi">3</span>
<span class="n">puck_color</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">color</span>
<span class="c1"># Draw main puck body.</span>
<span class="n">pygame</span><span class="o">.</span><span class="n">draw</span><span class="o">.</span><span class="n">circle</span><span class="p">(</span><span class="n">game_window</span><span class="o">.</span><span class="n">surface</span><span class="p">,</span> <span class="n">puck_color</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">pos_2d_px</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">radius_px</span><span class="p">,</span> <span class="n">puck_circle_thickness</span><span class="p">)</span>
<span class="c1"># # Draw life (poor health) indicator circle.</span>
<span class="c1"># if (self.client_name != None) and (not self.bullet):</span>
<span class="c1"># spent_fraction = float(env.clients[self.client_name].bullet_hit_count) / float(env.clients[self.client_name].bullet_hit_limit)</span>
<span class="c1"># life_radius = spent_fraction * self.radius_px</span>
<span class="c1"># if (life_radius > 2.0):</span>
<span class="c1"># life_radius_px = int(round(life_radius))</span>
<span class="c1"># else:</span>
<span class="c1"># life_radius_px = 2</span>
<span class="c1"># pygame.draw.circle(game_window.surface, THECOLORS["red"], self.pos_2d_px, life_radius_px, 1)</span>
<span class="k">class</span> <span class="nc">Spring</span><span class="p">:</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">p1</span><span class="p">,</span> <span class="n">p2</span><span class="p">,</span> <span class="n">length_m</span><span class="o">=</span><span class="mf">3.0</span><span class="p">,</span> <span class="n">strength_Npm</span><span class="o">=</span><span class="mf">0.5</span><span class="p">,</span> <span class="n">spring_color</span><span class="o">=</span><span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"yellow"</span><span class="p">],</span> <span class="n">width_m</span><span class="o">=</span><span class="mf">0.025</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">p1</span> <span class="o">=</span> <span class="n">p1</span>
<span class="bp">self</span><span class="o">.</span><span class="n">p2</span> <span class="o">=</span> <span class="n">p2</span>
<span class="bp">self</span><span class="o">.</span><span class="n">p1p2_separation_2d_m</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span><span class="mi">0</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">p1p2_separation_m</span> <span class="o">=</span> <span class="mi">0</span>
<span class="bp">self</span><span class="o">.</span><span class="n">p1p2_normalized_2d</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span><span class="mi">0</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">length_m</span> <span class="o">=</span> <span class="n">length_m</span>
<span class="bp">self</span><span class="o">.</span><span class="n">strength_Npm</span> <span class="o">=</span> <span class="n">strength_Npm</span>
<span class="bp">self</span><span class="o">.</span><span class="n">damper_Ns2pm2</span> <span class="o">=</span> <span class="mf">0.5</span> <span class="c1">#5.0 #0.05 #0.15</span>
<span class="bp">self</span><span class="o">.</span><span class="n">unstretched_width_m</span> <span class="o">=</span> <span class="n">width_m</span> <span class="c1">#0.05</span>
<span class="bp">self</span><span class="o">.</span><span class="n">spring_vertices_2d_m</span> <span class="o">=</span> <span class="p">[]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">spring_vertices_2d_px</span> <span class="o">=</span> <span class="p">[]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">spring_color</span> <span class="o">=</span> <span class="n">spring_color</span>
<span class="bp">self</span><span class="o">.</span><span class="n">draw_as_line</span> <span class="o">=</span> <span class="kc">False</span>
<span class="k">def</span> <span class="nf">calc_spring_forces_on_pucks</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">p1p2_separation_2d_m</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">p1</span><span class="o">.</span><span class="n">pos_2d_m</span> <span class="o">-</span> <span class="bp">self</span><span class="o">.</span><span class="n">p2</span><span class="o">.</span><span class="n">pos_2d_m</span>
<span class="bp">self</span><span class="o">.</span><span class="n">p1p2_separation_m</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">p1p2_separation_2d_m</span><span class="o">.</span><span class="n">length</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">p1p2_normalized_2d</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">p1p2_separation_2d_m</span> <span class="o">/</span> <span class="bp">self</span><span class="o">.</span><span class="n">p1p2_separation_m</span>
<span class="c1"># Spring force: acts along the separation vector and is proportional to the seperation distance.</span>
<span class="n">spring_force_on_1_N</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">p1p2_normalized_2d</span> <span class="o">*</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">length_m</span> <span class="o">-</span> <span class="bp">self</span><span class="o">.</span><span class="n">p1p2_separation_m</span><span class="p">)</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">strength_Npm</span>
<span class="c1"># Damper force: acts along the separation vector and is proportional to the relative speed.</span>
<span class="n">v_relative_2d_mps</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">p1</span><span class="o">.</span><span class="n">vel_2d_mps</span> <span class="o">-</span> <span class="bp">self</span><span class="o">.</span><span class="n">p2</span><span class="o">.</span><span class="n">vel_2d_mps</span>
<span class="n">v_relative_alongNormal_2d_mps</span> <span class="o">=</span> <span class="n">v_relative_2d_mps</span><span class="o">.</span><span class="n">projection_onto</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">p1p2_normalized_2d</span><span class="p">)</span>
<span class="n">damper_force_on_1_N</span> <span class="o">=</span> <span class="n">v_relative_alongNormal_2d_mps</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">damper_Ns2pm2</span>
<span class="c1"># Net force by both spring and damper</span>
<span class="n">SprDamp_force_2d_N</span> <span class="o">=</span> <span class="n">spring_force_on_1_N</span> <span class="o">-</span> <span class="n">damper_force_on_1_N</span>
<span class="c1"># This force acts in opposite directions for each of the two pucks. Notice the "+=" here, this</span>
<span class="c1"># is an aggregate across all the springs. This aggregate MUST be reset (zeroed) after the movements are</span>
<span class="c1"># calculated. So by the time you've looped through all the springs, you get the NET force, one each ball, </span>
<span class="c1"># applied of all individual springs.</span>
<span class="bp">self</span><span class="o">.</span><span class="n">p1</span><span class="o">.</span><span class="n">SprDamp_force_2d_N</span> <span class="o">+=</span> <span class="n">SprDamp_force_2d_N</span> <span class="o">*</span> <span class="p">(</span><span class="o">+</span><span class="mi">1</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">p2</span><span class="o">.</span><span class="n">SprDamp_force_2d_N</span> <span class="o">+=</span> <span class="n">SprDamp_force_2d_N</span> <span class="o">*</span> <span class="p">(</span><span class="o">-</span><span class="mi">1</span><span class="p">)</span>
<span class="c1"># This would be an alternate way to handle this. Directly calculate the effect on puck velocities.</span>
<span class="c1"># Apply the spring and damper force in changing the velocity of the two pucks.</span>
<span class="c1"># self.p1.vel_2d_mps = self.p1.vel_2d_mps + (self.p1.SprDamp_force_2d_N * (dt_physics_s/self.p1.mass_kg))</span>
<span class="c1"># self.p2.vel_2d_mps = self.p2.vel_2d_mps + (self.p2.SprDamp_force_2d_N * (dt_physics_s/self.p2.mass_kg))</span>
<span class="k">def</span> <span class="nf">width_to_draw_m</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">width_m</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">unstretched_width_m</span> <span class="o">*</span> <span class="p">(</span><span class="mi">1</span> <span class="o">+</span> <span class="mf">0.30</span> <span class="o">*</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">length_m</span> <span class="o">-</span> <span class="bp">self</span><span class="o">.</span><span class="n">p1p2_separation_m</span><span class="p">))</span>
<span class="k">if</span> <span class="n">width_m</span> <span class="o"><</span> <span class="p">(</span><span class="mf">0.05</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">unstretched_width_m</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">draw_as_line</span> <span class="o">=</span> <span class="kc">True</span>
<span class="n">width_m</span> <span class="o">=</span> <span class="mf">0.0</span>
<span class="k">else</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">draw_as_line</span> <span class="o">=</span> <span class="kc">False</span>
<span class="k">return</span> <span class="n">width_m</span>
<span class="k">def</span> <span class="nf">draw</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># Change the width to indicate the stretch or compression in the spring. Note, it's good to </span>
<span class="c1"># do this outside of the main calc loop (using the rendering timer). No need to do all this each</span>
<span class="c1"># time step.</span>
<span class="n">width_m</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">width_to_draw_m</span><span class="p">()</span>
<span class="c1"># Calculate the four corners of the spring rectangle.</span>
<span class="n">p1p2_perpendicular_2d</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">p1p2_normalized_2d</span><span class="o">.</span><span class="n">rotate90</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">spring_vertices_2d_m</span> <span class="o">=</span> <span class="p">[]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">spring_vertices_2d_m</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">p1</span><span class="o">.</span><span class="n">pos_2d_m</span> <span class="o">+</span> <span class="p">(</span><span class="n">p1p2_perpendicular_2d</span> <span class="o">*</span> <span class="n">width_m</span><span class="p">))</span>
<span class="bp">self</span><span class="o">.</span><span class="n">spring_vertices_2d_m</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">p1</span><span class="o">.</span><span class="n">pos_2d_m</span> <span class="o">-</span> <span class="p">(</span><span class="n">p1p2_perpendicular_2d</span> <span class="o">*</span> <span class="n">width_m</span><span class="p">))</span>
<span class="bp">self</span><span class="o">.</span><span class="n">spring_vertices_2d_m</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">p2</span><span class="o">.</span><span class="n">pos_2d_m</span> <span class="o">-</span> <span class="p">(</span><span class="n">p1p2_perpendicular_2d</span> <span class="o">*</span> <span class="n">width_m</span><span class="p">))</span>
<span class="bp">self</span><span class="o">.</span><span class="n">spring_vertices_2d_m</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">p2</span><span class="o">.</span><span class="n">pos_2d_m</span> <span class="o">+</span> <span class="p">(</span><span class="n">p1p2_perpendicular_2d</span> <span class="o">*</span> <span class="n">width_m</span><span class="p">))</span>
<span class="c1"># Transform from world to screen.</span>
<span class="bp">self</span><span class="o">.</span><span class="n">spring_vertices_2d_px</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">vertice_2d_m</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">spring_vertices_2d_m</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">spring_vertices_2d_px</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> <span class="n">env</span><span class="o">.</span><span class="n">ConvertWorldToScreen</span><span class="p">(</span> <span class="n">vertice_2d_m</span><span class="p">))</span>
<span class="c1"># Draw the spring</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">draw_as_line</span> <span class="o">==</span> <span class="kc">True</span><span class="p">:</span>
<span class="n">pygame</span><span class="o">.</span><span class="n">draw</span><span class="o">.</span><span class="n">aaline</span><span class="p">(</span><span class="n">game_window</span><span class="o">.</span><span class="n">surface</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">spring_color</span><span class="p">,</span> <span class="n">env</span><span class="o">.</span><span class="n">ConvertWorldToScreen</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">p1</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="p">),</span>
<span class="n">env</span><span class="o">.</span><span class="n">ConvertWorldToScreen</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">p2</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="p">))</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">pygame</span><span class="o">.</span><span class="n">draw</span><span class="o">.</span><span class="n">polygon</span><span class="p">(</span><span class="n">game_window</span><span class="o">.</span><span class="n">surface</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">spring_color</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">spring_vertices_2d_px</span><span class="p">)</span>
<span class="k">class</span> <span class="nc">AirTable</span><span class="p">:</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">walls_dic</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">gON_mps2</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="p">(</span><span class="o">-</span><span class="mf">0.0</span><span class="p">,</span> <span class="o">-</span><span class="mf">9.0</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">gOFF_mps2</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="p">(</span><span class="o">-</span><span class="mf">0.0</span><span class="p">,</span> <span class="o">-</span><span class="mf">0.0</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">g_2d_mps2</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">gOFF_mps2</span>
<span class="bp">self</span><span class="o">.</span><span class="n">g_ON</span> <span class="o">=</span> <span class="kc">False</span>
<span class="bp">self</span><span class="o">.</span><span class="n">pucks</span> <span class="o">=</span> <span class="p">[]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">controlled_pucks</span> <span class="o">=</span> <span class="p">[]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">springs</span> <span class="o">=</span> <span class="p">[]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">walls</span> <span class="o">=</span> <span class="n">walls_dic</span>
<span class="bp">self</span><span class="o">.</span><span class="n">collision_count</span> <span class="o">=</span> <span class="mi">0</span>
<span class="bp">self</span><span class="o">.</span><span class="n">coef_rest_puck</span> <span class="o">=</span> <span class="mf">0.90</span>
<span class="bp">self</span><span class="o">.</span><span class="n">coef_rest_table</span> <span class="o">=</span> <span class="mf">0.90</span>
<span class="bp">self</span><span class="o">.</span><span class="n">color_transfer</span> <span class="o">=</span> <span class="kc">False</span>
<span class="k">def</span> <span class="nf">draw</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1">#{"L_m":0.0, "R_m":10.0, "B_m":0.0, "T_m":10.0}</span>
<span class="n">topLeft_2d_px</span> <span class="o">=</span> <span class="n">env</span><span class="o">.</span><span class="n">ConvertWorldToScreen</span><span class="p">(</span> <span class="n">Vec2D</span><span class="p">(</span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s1">'L_m'</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s1">'T_m'</span><span class="p">]))</span>
<span class="n">topRight_2d_px</span> <span class="o">=</span> <span class="n">env</span><span class="o">.</span><span class="n">ConvertWorldToScreen</span><span class="p">(</span> <span class="n">Vec2D</span><span class="p">(</span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s1">'R_m'</span><span class="p">]</span><span class="o">-</span><span class="mf">0.01</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s1">'T_m'</span><span class="p">]))</span>
<span class="n">botLeft_2d_px</span> <span class="o">=</span> <span class="n">env</span><span class="o">.</span><span class="n">ConvertWorldToScreen</span><span class="p">(</span> <span class="n">Vec2D</span><span class="p">(</span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s1">'L_m'</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s1">'B_m'</span><span class="p">]</span><span class="o">+</span><span class="mf">0.01</span><span class="p">))</span>
<span class="n">botRight_2d_px</span> <span class="o">=</span> <span class="n">env</span><span class="o">.</span><span class="n">ConvertWorldToScreen</span><span class="p">(</span> <span class="n">Vec2D</span><span class="p">(</span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s1">'R_m'</span><span class="p">]</span><span class="o">-</span><span class="mf">0.01</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s1">'B_m'</span><span class="p">]</span><span class="o">+</span><span class="mf">0.01</span><span class="p">))</span>
<span class="n">pygame</span><span class="o">.</span><span class="n">draw</span><span class="o">.</span><span class="n">line</span><span class="p">(</span><span class="n">game_window</span><span class="o">.</span><span class="n">surface</span><span class="p">,</span> <span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"orangered1"</span><span class="p">],</span> <span class="n">topLeft_2d_px</span><span class="p">,</span> <span class="n">topRight_2d_px</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="n">pygame</span><span class="o">.</span><span class="n">draw</span><span class="o">.</span><span class="n">line</span><span class="p">(</span><span class="n">game_window</span><span class="o">.</span><span class="n">surface</span><span class="p">,</span> <span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"orangered1"</span><span class="p">],</span> <span class="n">topRight_2d_px</span><span class="p">,</span> <span class="n">botRight_2d_px</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="n">pygame</span><span class="o">.</span><span class="n">draw</span><span class="o">.</span><span class="n">line</span><span class="p">(</span><span class="n">game_window</span><span class="o">.</span><span class="n">surface</span><span class="p">,</span> <span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"orangered1"</span><span class="p">],</span> <span class="n">botRight_2d_px</span><span class="p">,</span> <span class="n">botLeft_2d_px</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="n">pygame</span><span class="o">.</span><span class="n">draw</span><span class="o">.</span><span class="n">line</span><span class="p">(</span><span class="n">game_window</span><span class="o">.</span><span class="n">surface</span><span class="p">,</span> <span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"orangered1"</span><span class="p">],</span> <span class="n">botLeft_2d_px</span><span class="p">,</span> <span class="n">topLeft_2d_px</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">checkForPuckAtThisPosition</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">x_px_or_tuple</span><span class="p">,</span> <span class="n">y_px</span> <span class="o">=</span> <span class="kc">None</span><span class="p">):</span>
<span class="k">if</span> <span class="n">y_px</span> <span class="o">==</span> <span class="kc">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">x_px</span> <span class="o">=</span> <span class="n">x_px_or_tuple</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">y_px</span> <span class="o">=</span> <span class="n">x_px_or_tuple</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
<span class="k">else</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">x_px</span> <span class="o">=</span> <span class="n">x_px_or_tuple</span>
<span class="bp">self</span><span class="o">.</span><span class="n">y_px</span> <span class="o">=</span> <span class="n">y_px</span>
<span class="n">test_position_m</span> <span class="o">=</span> <span class="n">env</span><span class="o">.</span><span class="n">ConvertScreenToWorld</span><span class="p">(</span><span class="n">Vec2D</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">x_px</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">y_px</span><span class="p">))</span>
<span class="k">for</span> <span class="n">puck</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">pucks</span><span class="p">:</span>
<span class="n">vector_difference_m</span> <span class="o">=</span> <span class="n">test_position_m</span> <span class="o">-</span> <span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span>
<span class="c1"># Use squared lengths for speed (avoid square root)</span>
<span class="n">mag_of_difference_m2</span> <span class="o">=</span> <span class="n">vector_difference_m</span><span class="o">.</span><span class="n">length_squared</span><span class="p">()</span>
<span class="k">if</span> <span class="n">mag_of_difference_m2</span> <span class="o"><</span> <span class="n">puck</span><span class="o">.</span><span class="n">radius_m</span><span class="o">**</span><span class="mi">2</span><span class="p">:</span>
<span class="n">puck</span><span class="o">.</span><span class="n">selected</span> <span class="o">=</span> <span class="kc">True</span>
<span class="k">return</span> <span class="n">puck</span>
<span class="k">return</span> <span class="kc">None</span>
<span class="k">def</span> <span class="nf">update_PuckSpeedAndPosition</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">puck</span><span class="p">,</span> <span class="n">dt_s</span><span class="p">):</span>
<span class="c1"># Net resulting force on the puck.</span>
<span class="n">puck_forces_2d_N</span> <span class="o">=</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">g_2d_mps2</span> <span class="o">*</span> <span class="n">puck</span><span class="o">.</span><span class="n">mass_kg</span><span class="p">)</span> <span class="o">+</span> <span class="p">(</span><span class="n">puck</span><span class="o">.</span><span class="n">SprDamp_force_2d_N</span> <span class="o">+</span>
<span class="n">puck</span><span class="o">.</span><span class="n">jet_force_2d_N</span> <span class="o">+</span>
<span class="n">puck</span><span class="o">.</span><span class="n">cursorString_spring_force_2d_N</span> <span class="o">+</span>
<span class="n">puck</span><span class="o">.</span><span class="n">cursorString_puckDrag_force_2d_N</span> <span class="o">+</span>
<span class="n">puck</span><span class="o">.</span><span class="n">impulse_2d_Ns</span><span class="o">/</span><span class="n">dt_s</span><span class="p">)</span>
<span class="c1"># Acceleration from Newton's law.</span>
<span class="n">acc_2d_mps2</span> <span class="o">=</span> <span class="n">puck_forces_2d_N</span> <span class="o">/</span> <span class="n">puck</span><span class="o">.</span><span class="n">mass_kg</span>
<span class="c1"># Acceleration changes the velocity: dv = a * dt</span>
<span class="c1"># Velocity at the end of the timestep.</span>
<span class="n">puck</span><span class="o">.</span><span class="n">vel_2d_mps</span> <span class="o">=</span> <span class="n">puck</span><span class="o">.</span><span class="n">vel_2d_mps</span> <span class="o">+</span> <span class="p">(</span><span class="n">acc_2d_mps2</span> <span class="o">*</span> <span class="n">dt_s</span><span class="p">)</span>
<span class="c1"># Calculate the new physical puck position using the velocity at the end of the timestep.</span>
<span class="c1"># Velocity changes the position: dx = v * dt</span>
<span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span> <span class="o">=</span> <span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span> <span class="o">+</span> <span class="p">(</span><span class="n">puck</span><span class="o">.</span><span class="n">vel_2d_mps</span> <span class="o">*</span> <span class="n">dt_s</span><span class="p">)</span>
<span class="c1"># Now reset the aggregate forces.</span>
<span class="n">puck</span><span class="o">.</span><span class="n">SprDamp_force_2d_N</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="p">(</span><span class="mf">0.0</span><span class="p">,</span><span class="mf">0.0</span><span class="p">)</span>
<span class="n">puck</span><span class="o">.</span><span class="n">cursorString_spring_force_2d_N</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="p">(</span><span class="mf">0.0</span><span class="p">,</span><span class="mf">0.0</span><span class="p">)</span>
<span class="n">puck</span><span class="o">.</span><span class="n">cursorString_puckDrag_force_2d_N</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="p">(</span><span class="mf">0.0</span><span class="p">,</span><span class="mf">0.0</span><span class="p">)</span>
<span class="n">puck</span><span class="o">.</span><span class="n">impulse_2d_Ns</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="p">(</span><span class="mf">0.0</span><span class="p">,</span><span class="mf">0.0</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">check_for_collisions</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">puck</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">pucks</span><span class="p">):</span>
<span class="c1"># Check top and bottom walls.</span>
<span class="k">if</span> <span class="p">(((</span><span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="o">.</span><span class="n">y</span> <span class="o">-</span> <span class="n">puck</span><span class="o">.</span><span class="n">radius_m</span><span class="p">)</span> <span class="o"><</span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s2">"B_m"</span><span class="p">])</span> <span class="ow">or</span> <span class="p">((</span><span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="o">.</span><span class="n">y</span> <span class="o">+</span> <span class="n">puck</span><span class="o">.</span><span class="n">radius_m</span><span class="p">)</span> <span class="o">></span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s2">"T_m"</span><span class="p">])):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">correct_for_wall_penetration</span><span class="p">:</span>
<span class="k">if</span> <span class="p">(</span><span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="o">.</span><span class="n">y</span> <span class="o">-</span> <span class="n">puck</span><span class="o">.</span><span class="n">radius_m</span><span class="p">)</span> <span class="o"><</span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s2">"B_m"</span><span class="p">]:</span>
<span class="n">penetration_y_m</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s2">"B_m"</span><span class="p">]</span> <span class="o">-</span> <span class="p">(</span><span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="o">.</span><span class="n">y</span> <span class="o">-</span> <span class="n">puck</span><span class="o">.</span><span class="n">radius_m</span><span class="p">)</span>
<span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="o">.</span><span class="n">y</span> <span class="o">+=</span> <span class="mi">2</span> <span class="o">*</span> <span class="n">penetration_y_m</span>
<span class="k">if</span> <span class="p">(</span><span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="o">.</span><span class="n">y</span> <span class="o">+</span> <span class="n">puck</span><span class="o">.</span><span class="n">radius_m</span><span class="p">)</span> <span class="o">></span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s2">"T_m"</span><span class="p">]:</span>
<span class="n">penetration_y_m</span> <span class="o">=</span> <span class="p">(</span><span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="o">.</span><span class="n">y</span> <span class="o">+</span> <span class="n">puck</span><span class="o">.</span><span class="n">radius_m</span><span class="p">)</span> <span class="o">-</span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s2">"T_m"</span><span class="p">]</span>
<span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="o">.</span><span class="n">y</span> <span class="o">-=</span> <span class="mi">2</span> <span class="o">*</span> <span class="n">penetration_y_m</span>
<span class="n">puck</span><span class="o">.</span><span class="n">vel_2d_mps</span><span class="o">.</span><span class="n">y</span> <span class="o">*=</span> <span class="o">-</span><span class="mi">1</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">coef_rest_table</span>
<span class="c1"># Check left and right walls.</span>
<span class="k">if</span> <span class="p">(((</span><span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="o">.</span><span class="n">x</span> <span class="o">-</span> <span class="n">puck</span><span class="o">.</span><span class="n">radius_m</span><span class="p">)</span> <span class="o"><</span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s2">"L_m"</span><span class="p">])</span> <span class="ow">or</span> <span class="p">((</span><span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="o">.</span><span class="n">x</span> <span class="o">+</span> <span class="n">puck</span><span class="o">.</span><span class="n">radius_m</span><span class="p">)</span> <span class="o">></span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s2">"R_m"</span><span class="p">])):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">correct_for_wall_penetration</span><span class="p">:</span>
<span class="k">if</span> <span class="p">(</span><span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="o">.</span><span class="n">x</span> <span class="o">-</span> <span class="n">puck</span><span class="o">.</span><span class="n">radius_m</span><span class="p">)</span> <span class="o"><</span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s2">"L_m"</span><span class="p">]:</span>
<span class="n">penetration_x_m</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s2">"L_m"</span><span class="p">]</span> <span class="o">-</span> <span class="p">(</span><span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="o">.</span><span class="n">x</span> <span class="o">-</span> <span class="n">puck</span><span class="o">.</span><span class="n">radius_m</span><span class="p">)</span>
<span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="o">.</span><span class="n">x</span> <span class="o">+=</span> <span class="mi">2</span> <span class="o">*</span> <span class="n">penetration_x_m</span>
<span class="k">if</span> <span class="p">(</span><span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="o">.</span><span class="n">x</span> <span class="o">+</span> <span class="n">puck</span><span class="o">.</span><span class="n">radius_m</span><span class="p">)</span> <span class="o">></span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s2">"R_m"</span><span class="p">]:</span>
<span class="n">penetration_x_m</span> <span class="o">=</span> <span class="p">(</span><span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="o">.</span><span class="n">x</span> <span class="o">+</span> <span class="n">puck</span><span class="o">.</span><span class="n">radius_m</span><span class="p">)</span> <span class="o">-</span> <span class="bp">self</span><span class="o">.</span><span class="n">walls</span><span class="p">[</span><span class="s2">"R_m"</span><span class="p">]</span>
<span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span><span class="o">.</span><span class="n">x</span> <span class="o">-=</span> <span class="mi">2</span> <span class="o">*</span> <span class="n">penetration_x_m</span>
<span class="n">puck</span><span class="o">.</span><span class="n">vel_2d_mps</span><span class="o">.</span><span class="n">x</span> <span class="o">*=</span> <span class="o">-</span><span class="mi">1</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">coef_rest_table</span>
<span class="c1"># Collisions with other pucks. </span>
<span class="k">for</span> <span class="n">otherpuck</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">pucks</span><span class="p">[</span><span class="n">i</span><span class="o">+</span><span class="mi">1</span><span class="p">:]:</span>
<span class="c1"># Check if the two puck circles are overlapping.</span>
<span class="c1"># Parallel to the normal</span>
<span class="n">puck_to_puck_2d_m</span> <span class="o">=</span> <span class="n">otherpuck</span><span class="o">.</span><span class="n">pos_2d_m</span> <span class="o">-</span> <span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span>
<span class="c1"># Parallel to the tangent</span>
<span class="n">tanget_p_to_p_2d_m</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="o">.</span><span class="n">rotate90</span><span class="p">(</span><span class="n">puck_to_puck_2d_m</span><span class="p">)</span>
<span class="n">p_to_p_m2</span> <span class="o">=</span> <span class="n">puck_to_puck_2d_m</span><span class="o">.</span><span class="n">length_squared</span><span class="p">()</span>
<span class="c1"># Keep this check fast by avoiding square roots.</span>
<span class="k">if</span> <span class="p">(</span><span class="n">p_to_p_m2</span> <span class="o"><</span> <span class="p">(</span><span class="n">puck</span><span class="o">.</span><span class="n">radius_m</span> <span class="o">+</span> <span class="n">otherpuck</span><span class="o">.</span><span class="n">radius_m</span><span class="p">)</span><span class="o">**</span><span class="mi">2</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">collision_count</span> <span class="o">+=</span> <span class="mi">1</span>
<span class="c1">#print "collision_count", self.collision_count</span>
<span class="c1"># If it's a bullet coming from another client, add to the</span>
<span class="c1"># hit count for non-bullet client.</span>
<span class="k">if</span> <span class="p">(</span><span class="n">puck</span><span class="o">.</span><span class="n">client_name</span> <span class="o">!=</span> <span class="kc">None</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">otherpuck</span><span class="o">.</span><span class="n">client_name</span> <span class="o">!=</span> <span class="kc">None</span><span class="p">):</span>
<span class="k">if</span> <span class="p">(</span><span class="n">puck</span><span class="o">.</span><span class="n">client_name</span> <span class="o">!=</span> <span class="n">otherpuck</span><span class="o">.</span><span class="n">client_name</span><span class="p">):</span>
<span class="k">if</span> <span class="p">(</span><span class="n">otherpuck</span><span class="o">.</span><span class="n">bullet</span> <span class="ow">and</span> <span class="p">(</span><span class="ow">not</span> <span class="n">puck</span><span class="o">.</span><span class="n">bullet</span><span class="p">)):</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">puck</span><span class="o">.</span><span class="n">gun</span><span class="o">.</span><span class="n">shield</span><span class="p">:</span>
<span class="n">env</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="n">puck</span><span class="o">.</span><span class="n">client_name</span><span class="p">]</span><span class="o">.</span><span class="n">bullet_hit_count</span> <span class="o">+=</span> <span class="mi">1</span>
<span class="n">puck</span><span class="o">.</span><span class="n">hit</span> <span class="o">=</span> <span class="kc">True</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">puck</span><span class="o">.</span><span class="n">gun</span><span class="o">.</span><span class="n">shield_hit_count</span> <span class="o">+=</span> <span class="mi">1</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">color_transfer</span> <span class="o">==</span> <span class="kc">True</span><span class="p">:</span>
<span class="c1">#(puck.color, otherpuck.color) = (otherpuck.color, puck.color)</span>
<span class="k">pass</span>
<span class="c1"># Use the p_to_p vector (between the two colliding pucks) as projection target for </span>
<span class="c1"># normal calculation.</span>
<span class="c1"># The calculate velocity components along and perpendicular to the normal.</span>
<span class="n">puck_normal_2d_mps</span> <span class="o">=</span> <span class="n">puck</span><span class="o">.</span><span class="n">vel_2d_mps</span><span class="o">.</span><span class="n">projection_onto</span><span class="p">(</span><span class="n">puck_to_puck_2d_m</span><span class="p">)</span>
<span class="n">puck_tangent_2d_mps</span> <span class="o">=</span> <span class="n">puck</span><span class="o">.</span><span class="n">vel_2d_mps</span><span class="o">.</span><span class="n">projection_onto</span><span class="p">(</span><span class="n">tanget_p_to_p_2d_m</span><span class="p">)</span>
<span class="n">otherpuck_normal_2d_mps</span> <span class="o">=</span> <span class="n">otherpuck</span><span class="o">.</span><span class="n">vel_2d_mps</span><span class="o">.</span><span class="n">projection_onto</span><span class="p">(</span><span class="n">puck_to_puck_2d_m</span><span class="p">)</span>
<span class="n">otherpuck_tangent_2d_mps</span> <span class="o">=</span> <span class="n">otherpuck</span><span class="o">.</span><span class="n">vel_2d_mps</span><span class="o">.</span><span class="n">projection_onto</span><span class="p">(</span><span class="n">tanget_p_to_p_2d_m</span><span class="p">)</span>
<span class="n">relative_normal_vel_2d_mps</span> <span class="o">=</span> <span class="n">otherpuck_normal_2d_mps</span> <span class="o">-</span> <span class="n">puck_normal_2d_mps</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">correct_for_puck_penetration</span><span class="p">:</span>
<span class="c1"># Back out a total of 2x of the penetration along the normal. Back-out amounts for each puck is </span>
<span class="c1"># based on the velocity of each puck time 2DT where DT is the time of penetration. DT is calculated</span>
<span class="c1"># from the relative speed and the penetration distance.</span>
<span class="n">relative_normal_spd_mps</span> <span class="o">=</span> <span class="n">relative_normal_vel_2d_mps</span><span class="o">.</span><span class="n">length</span><span class="p">()</span>
<span class="n">penetration_m</span> <span class="o">=</span> <span class="p">(</span><span class="n">puck</span><span class="o">.</span><span class="n">radius_m</span> <span class="o">+</span> <span class="n">otherpuck</span><span class="o">.</span><span class="n">radius_m</span><span class="p">)</span> <span class="o">-</span> <span class="n">p_to_p_m2</span><span class="o">**</span><span class="mf">0.5</span>
<span class="k">if</span> <span class="p">(</span><span class="n">relative_normal_spd_mps</span> <span class="o">></span> <span class="mf">0.00001</span><span class="p">):</span>
<span class="n">penetration_time_s</span> <span class="o">=</span> <span class="n">penetration_m</span> <span class="o">/</span> <span class="n">relative_normal_spd_mps</span>
<span class="n">penetration_time_scaler</span> <span class="o">=</span> <span class="mf">1.0</span> <span class="c1"># This can be useful for testing to amplify and see the correction.</span>
<span class="c1"># First, reverse the two pucks, to their collision point, along their incoming trajectory paths.</span>
<span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span> <span class="o">=</span> <span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span> <span class="o">-</span> <span class="p">(</span><span class="n">puck_normal_2d_mps</span> <span class="o">*</span> <span class="p">(</span><span class="n">penetration_time_scaler</span> <span class="o">*</span> <span class="n">penetration_time_s</span><span class="p">))</span>
<span class="n">otherpuck</span><span class="o">.</span><span class="n">pos_2d_m</span> <span class="o">=</span> <span class="n">otherpuck</span><span class="o">.</span><span class="n">pos_2d_m</span> <span class="o">-</span> <span class="p">(</span><span class="n">otherpuck_normal_2d_mps</span> <span class="o">*</span> <span class="p">(</span><span class="n">penetration_time_scaler</span> <span class="o">*</span> <span class="n">penetration_time_s</span><span class="p">))</span>
<span class="c1"># Calculate the velocities along the normal AFTER the collision. Use a CR (coefficient of restitution)</span>
<span class="c1"># of 1 here to better avoid stickiness.</span>
<span class="n">CR_puck</span> <span class="o">=</span> <span class="mi">1</span>
<span class="n">puck_normal_AFTER_mps</span><span class="p">,</span> <span class="n">otherpuck_normal_AFTER_mps</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">AandB_normal_AFTER_2d_mps</span><span class="p">(</span> <span class="n">puck_normal_2d_mps</span><span class="p">,</span> <span class="n">puck</span><span class="o">.</span><span class="n">mass_kg</span><span class="p">,</span> <span class="n">otherpuck_normal_2d_mps</span><span class="p">,</span> <span class="n">otherpuck</span><span class="o">.</span><span class="n">mass_kg</span><span class="p">,</span> <span class="n">CR_puck</span><span class="p">)</span>
<span class="c1"># Finally, travel another penetration time worth of distance using these AFTER-collision velocities.</span>
<span class="c1"># This will put the pucks where they should have been at the time of collision detection.</span>
<span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span> <span class="o">=</span> <span class="n">puck</span><span class="o">.</span><span class="n">pos_2d_m</span> <span class="o">+</span> <span class="p">(</span><span class="n">puck_normal_AFTER_mps</span> <span class="o">*</span> <span class="p">(</span><span class="n">penetration_time_scaler</span> <span class="o">*</span> <span class="n">penetration_time_s</span><span class="p">))</span>
<span class="n">otherpuck</span><span class="o">.</span><span class="n">pos_2d_m</span> <span class="o">=</span> <span class="n">otherpuck</span><span class="o">.</span><span class="n">pos_2d_m</span> <span class="o">+</span> <span class="p">(</span><span class="n">otherpuck_normal_AFTER_mps</span> <span class="o">*</span> <span class="p">(</span><span class="n">penetration_time_scaler</span> <span class="o">*</span> <span class="n">penetration_time_s</span><span class="p">))</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">pass</span>
<span class="c1">#print "small relative speed"</span>
<span class="c1">#self.g_2d_mps2 = self.gOFF_mps2</span>
<span class="c1"># for puck in self.pucks:</span>
<span class="c1"># puck.vel_2d_mps = Vec2D(0,0)</span>
<span class="c1"># Assign the AFTER velocities (using the actual CR here) to the puck for use in the next frame calculation.</span>
<span class="n">CR_puck</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">coef_rest_puck</span>
<span class="n">puck_normal_AFTER_mps</span><span class="p">,</span> <span class="n">otherpuck_normal_AFTER_mps</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">AandB_normal_AFTER_2d_mps</span><span class="p">(</span> <span class="n">puck_normal_2d_mps</span><span class="p">,</span> <span class="n">puck</span><span class="o">.</span><span class="n">mass_kg</span><span class="p">,</span> <span class="n">otherpuck_normal_2d_mps</span><span class="p">,</span> <span class="n">otherpuck</span><span class="o">.</span><span class="n">mass_kg</span><span class="p">,</span> <span class="n">CR_puck</span><span class="p">)</span>
<span class="c1"># Now that we're done using the current values, set them to the newly calculated AFTERs.</span>
<span class="n">puck_normal_2d_mps</span><span class="p">,</span> <span class="n">otherpuck_normal_2d_mps</span> <span class="o">=</span> <span class="n">puck_normal_AFTER_mps</span><span class="p">,</span> <span class="n">otherpuck_normal_AFTER_mps</span>
<span class="c1"># Add the components back together to get total velocity vectors for each puck.</span>
<span class="n">puck</span><span class="o">.</span><span class="n">vel_2d_mps</span> <span class="o">=</span> <span class="n">puck_normal_2d_mps</span> <span class="o">+</span> <span class="n">puck_tangent_2d_mps</span>
<span class="n">otherpuck</span><span class="o">.</span><span class="n">vel_2d_mps</span> <span class="o">=</span> <span class="n">otherpuck_normal_2d_mps</span> <span class="o">+</span> <span class="n">otherpuck_tangent_2d_mps</span>
<span class="k">def</span> <span class="nf">normal_AFTER_2d_mps</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">A_normal_BEFORE_2d_mps</span><span class="p">,</span> <span class="n">A_mass_kg</span><span class="p">,</span> <span class="n">B_normal_BEFORE_2d_mps</span><span class="p">,</span> <span class="n">B_mass_kg</span><span class="p">,</span> <span class="n">CR_puck</span><span class="p">):</span>
<span class="c1"># For inputs as defined here, this returns the AFTER normal for the first puck in the inputs. So if B</span>
<span class="c1"># is first, it returns the result for the B puck.</span>
<span class="n">relative_normal_vel_2d_mps</span> <span class="o">=</span> <span class="n">B_normal_BEFORE_2d_mps</span> <span class="o">-</span> <span class="n">A_normal_BEFORE_2d_mps</span>
<span class="k">return</span> <span class="p">(</span> <span class="p">(</span> <span class="p">(</span><span class="n">relative_normal_vel_2d_mps</span> <span class="o">*</span> <span class="p">(</span><span class="n">CR_puck</span> <span class="o">*</span> <span class="n">B_mass_kg</span><span class="p">))</span> <span class="o">+</span>
<span class="p">(</span><span class="n">A_normal_BEFORE_2d_mps</span> <span class="o">*</span> <span class="n">A_mass_kg</span> <span class="o">+</span> <span class="n">B_normal_BEFORE_2d_mps</span> <span class="o">*</span> <span class="n">B_mass_kg</span><span class="p">)</span> <span class="p">)</span> <span class="o">/</span>
<span class="p">(</span><span class="n">A_mass_kg</span> <span class="o">+</span> <span class="n">B_mass_kg</span><span class="p">)</span> <span class="p">)</span>
<span class="k">def</span> <span class="nf">AandB_normal_AFTER_2d_mps</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">A_normal_BEFORE_2d_mps</span><span class="p">,</span> <span class="n">A_mass_kg</span><span class="p">,</span> <span class="n">B_normal_BEFORE_2d_mps</span><span class="p">,</span> <span class="n">B_mass_kg</span><span class="p">,</span> <span class="n">CR_puck</span><span class="p">):</span>
<span class="n">A</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">normal_AFTER_2d_mps</span><span class="p">(</span><span class="n">A_normal_BEFORE_2d_mps</span><span class="p">,</span> <span class="n">A_mass_kg</span><span class="p">,</span> <span class="n">B_normal_BEFORE_2d_mps</span><span class="p">,</span> <span class="n">B_mass_kg</span><span class="p">,</span> <span class="n">CR_puck</span><span class="p">)</span>
<span class="c1"># Make use of the symmetry in the physics to calculate the B normal (put the B data in the first inputs).</span>
<span class="n">B</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">normal_AFTER_2d_mps</span><span class="p">(</span><span class="n">B_normal_BEFORE_2d_mps</span><span class="p">,</span> <span class="n">B_mass_kg</span><span class="p">,</span> <span class="n">A_normal_BEFORE_2d_mps</span><span class="p">,</span> <span class="n">A_mass_kg</span><span class="p">,</span> <span class="n">CR_puck</span><span class="p">)</span>
<span class="k">return</span> <span class="n">A</span><span class="p">,</span> <span class="n">B</span>
<span class="k">class</span> <span class="nc">Environment</span><span class="p">:</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">screenSize_px</span><span class="p">,</span> <span class="n">length_x_m</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">screenSize_px</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="p">(</span><span class="n">screenSize_px</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">viewOffset_px</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span><span class="mi">0</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">viewCenter_px</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span><span class="mi">0</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">viewZoom</span> <span class="o">=</span> <span class="mi">1</span>
<span class="bp">self</span><span class="o">.</span><span class="n">viewZoom_rate</span> <span class="o">=</span> <span class="mf">0.01</span>
<span class="bp">self</span><span class="o">.</span><span class="n">px_to_m</span> <span class="o">=</span> <span class="n">length_x_m</span><span class="o">/</span><span class="nb">float</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">screenSize_px</span><span class="o">.</span><span class="n">x</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">m_to_px</span> <span class="o">=</span> <span class="p">(</span><span class="nb">float</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">screenSize_px</span><span class="o">.</span><span class="n">x</span><span class="p">)</span><span class="o">/</span><span class="n">length_x_m</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">client_colors</span> <span class="o">=</span> <span class="p">{</span><span class="s1">'C1'</span><span class="p">:</span> <span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"orangered1"</span><span class="p">],</span><span class="s1">'C2'</span><span class="p">:</span> <span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"tan"</span><span class="p">],</span><span class="s1">'C3'</span><span class="p">:</span> <span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"cyan"</span><span class="p">],</span><span class="s1">'C4'</span><span class="p">:</span> <span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"blue"</span><span class="p">],</span>
<span class="s1">'C5'</span><span class="p">:</span> <span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"pink"</span><span class="p">],</span> <span class="s1">'C6'</span><span class="p">:</span> <span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"red"</span><span class="p">],</span><span class="s1">'C7'</span><span class="p">:</span> <span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"coral"</span><span class="p">],</span><span class="s1">'C8'</span><span class="p">:</span> <span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"green"</span><span class="p">],</span>
<span class="s1">'C9'</span><span class="p">:</span> <span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"grey80"</span><span class="p">],</span><span class="s1">'C10'</span><span class="p">:</span> <span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"rosybrown3"</span><span class="p">]}</span>
<span class="c1"># Add a local (non-network) client to the client dictionary.</span>
<span class="bp">self</span><span class="o">.</span><span class="n">clients</span> <span class="o">=</span> <span class="p">{</span><span class="s1">'local'</span><span class="p">:</span><span class="n">Client</span><span class="p">(</span><span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"green"</span><span class="p">])}</span>
<span class="bp">self</span><span class="o">.</span><span class="n">time_s</span> <span class="o">=</span> <span class="mi">0</span>
<span class="c1"># def remove_healthless_clients(self):</span>
<span class="c1"># # Make a list of terminal clients.</span>
<span class="c1"># #print len(air_table.pucks), len(air_table.controlled_pucks)</span>
<span class="c1"># spent_client_names = []</span>
<span class="c1"># for thisclient_name in self.clients:</span>
<span class="c1"># if self.clients[thisclient_name].bullet_hit_count > self.clients[thisclient_name].bullet_hit_limit:</span>
<span class="c1"># spent_client_names.append( thisclient_name)</span>
<span class="c1"># # Reset so don't keep trying to delete it.</span>
<span class="c1"># #self.clients[thisclient_name].bullet_hit_count = 0</span>
<span class="c1"># pucks_list_copy = air_table.pucks[:]</span>
<span class="c1"># for puck in pucks_list_copy:</span>
<span class="c1"># if puck.client_name in spent_client_names:</span>
<span class="c1"># # Had to put this check in to prevent server crash on simultaneous death bullets between two clients.</span>
<span class="c1"># # Don't yet understand why this is necessary.</span>
<span class="c1"># if (puck in air_table.controlled_pucks):</span>
<span class="c1"># air_table.controlled_pucks.remove( puck)</span>
<span class="c1"># else:</span>
<span class="c1"># print puck.client_name, "puck not in the controlled puck list."</span>
<span class="c1"># air_table.pucks.remove( puck)</span>
<span class="c1"># for spent_client in spent_client_names:</span>
<span class="c1"># # Remove client from client dictionary</span>
<span class="c1"># if (spent_client != 'local'):</span>
<span class="c1"># del self.clients[ spent_client]</span>
<span class="c1"># del pucks_list_copy</span>
<span class="c1"># Convert from meters to pixels </span>
<span class="k">def</span> <span class="nf">px_from_m</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dx_m</span><span class="p">):</span>
<span class="k">return</span> <span class="n">dx_m</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">m_to_px</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">viewZoom</span>
<span class="c1"># Convert from pixels to meters</span>
<span class="c1"># Note: still floating values here)</span>
<span class="k">def</span> <span class="nf">m_from_px</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dx_px</span><span class="p">):</span>
<span class="k">return</span> <span class="nb">float</span><span class="p">(</span><span class="n">dx_px</span><span class="p">)</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">px_to_m</span> <span class="o">/</span> <span class="bp">self</span><span class="o">.</span><span class="n">viewZoom</span>
<span class="k">def</span> <span class="nf">control_zoom_and_view</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="s1">'local'</span><span class="p">]</span><span class="o">.</span><span class="n">key_h</span> <span class="o">==</span> <span class="s2">"D"</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">viewZoom</span> <span class="o">+=</span> <span class="bp">self</span><span class="o">.</span><span class="n">viewZoom_rate</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">viewZoom</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="s1">'local'</span><span class="p">]</span><span class="o">.</span><span class="n">key_n</span> <span class="o">==</span> <span class="s2">"D"</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">viewZoom</span> <span class="o">-=</span> <span class="bp">self</span><span class="o">.</span><span class="n">viewZoom_rate</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">viewZoom</span>
<span class="k">def</span> <span class="nf">ConvertScreenToWorld</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">point_2d_px</span><span class="p">):</span>
<span class="c1">#self.viewOffset_px = self.viewCenter_px</span>
<span class="n">x_m</span> <span class="o">=</span> <span class="p">(</span> <span class="n">point_2d_px</span><span class="o">.</span><span class="n">x</span> <span class="o">+</span> <span class="bp">self</span><span class="o">.</span><span class="n">viewOffset_px</span><span class="o">.</span><span class="n">x</span><span class="p">)</span> <span class="o">/</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">m_to_px</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">viewZoom</span><span class="p">)</span>
<span class="n">y_m</span> <span class="o">=</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">screenSize_px</span><span class="o">.</span><span class="n">y</span> <span class="o">-</span> <span class="n">point_2d_px</span><span class="o">.</span><span class="n">y</span> <span class="o">+</span> <span class="bp">self</span><span class="o">.</span><span class="n">viewOffset_px</span><span class="o">.</span><span class="n">y</span><span class="p">)</span> <span class="o">/</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">m_to_px</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">viewZoom</span><span class="p">)</span>
<span class="k">return</span> <span class="n">Vec2D</span><span class="p">(</span> <span class="n">x_m</span><span class="p">,</span> <span class="n">y_m</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">ConvertWorldToScreen</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">point_2d_m</span><span class="p">):</span>
<span class="w"> </span><span class="sd">"""</span>
<span class="sd"> Convert from world to screen coordinates (pixels).</span>
<span class="sd"> In the class instance, we store a zoom factor, an offset indicating where</span>
<span class="sd"> the view extents start at, and the screen size (in pixels).</span>
<span class="sd"> """</span>
<span class="c1"># self.viewOffset = self.viewCenter - self.screenSize_px/2</span>
<span class="c1">#self.viewOffset = self.viewCenter_px</span>
<span class="n">x_px</span> <span class="o">=</span> <span class="p">(</span><span class="n">point_2d_m</span><span class="o">.</span><span class="n">x</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">m_to_px</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">viewZoom</span><span class="p">)</span> <span class="o">-</span> <span class="bp">self</span><span class="o">.</span><span class="n">viewOffset_px</span><span class="o">.</span><span class="n">x</span>
<span class="n">y_px</span> <span class="o">=</span> <span class="p">(</span><span class="n">point_2d_m</span><span class="o">.</span><span class="n">y</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">m_to_px</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">viewZoom</span><span class="p">)</span> <span class="o">-</span> <span class="bp">self</span><span class="o">.</span><span class="n">viewOffset_px</span><span class="o">.</span><span class="n">y</span>
<span class="n">y_px</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">screenSize_px</span><span class="o">.</span><span class="n">y</span> <span class="o">-</span> <span class="n">y_px</span>
<span class="c1"># Return a tuple of integers.</span>
<span class="k">return</span> <span class="n">Vec2D</span><span class="p">(</span><span class="n">x_px</span><span class="p">,</span> <span class="n">y_px</span><span class="p">,</span> <span class="s2">"int"</span><span class="p">)</span><span class="o">.</span><span class="n">tuple</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">get_local_user_input</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">local_user</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">clients</span><span class="p">[</span><span class="s1">'local'</span><span class="p">]</span>
<span class="c1"># Get all the events since the last call to get().</span>
<span class="k">for</span> <span class="n">event</span> <span class="ow">in</span> <span class="n">pygame</span><span class="o">.</span><span class="n">event</span><span class="o">.</span><span class="n">get</span><span class="p">():</span>
<span class="k">if</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">type</span> <span class="o">==</span> <span class="n">pygame</span><span class="o">.</span><span class="n">QUIT</span><span class="p">):</span>
<span class="n">sys</span><span class="o">.</span><span class="n">exit</span><span class="p">()</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">type</span> <span class="o">==</span> <span class="n">pygame</span><span class="o">.</span><span class="n">KEYDOWN</span><span class="p">):</span>
<span class="k">if</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span> <span class="o">==</span> <span class="n">K_ESCAPE</span><span class="p">):</span>
<span class="n">sys</span><span class="o">.</span><span class="n">exit</span><span class="p">()</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_1</span><span class="p">):</span>
<span class="k">return</span> <span class="mi">1</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_2</span><span class="p">):</span>
<span class="k">return</span> <span class="mi">2</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_3</span><span class="p">):</span>
<span class="k">return</span> <span class="mi">3</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_4</span><span class="p">):</span>
<span class="k">return</span> <span class="mi">4</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_5</span><span class="p">):</span>
<span class="k">return</span> <span class="mi">5</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_6</span><span class="p">):</span>
<span class="k">return</span> <span class="mi">6</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_7</span><span class="p">):</span>
<span class="k">return</span> <span class="mi">7</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_8</span><span class="p">):</span>
<span class="k">return</span> <span class="mi">8</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_9</span><span class="p">):</span>
<span class="k">return</span> <span class="mi">9</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_0</span><span class="p">):</span>
<span class="k">return</span> <span class="mi">0</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_c</span><span class="p">):</span>
<span class="c1"># Toggle color option.</span>
<span class="n">air_table</span><span class="o">.</span><span class="n">color_transfer</span> <span class="o">=</span> <span class="ow">not</span> <span class="n">air_table</span><span class="o">.</span><span class="n">color_transfer</span>
<span class="c1">#form['ColorTransfer'].value = air_table.color_transfer</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_f</span><span class="p">):</span>
<span class="k">for</span> <span class="n">puck</span> <span class="ow">in</span> <span class="n">air_table</span><span class="o">.</span><span class="n">pucks</span><span class="p">:</span>
<span class="n">puck</span><span class="o">.</span><span class="n">vel_2d_mps</span> <span class="o">=</span> <span class="n">Vec2D</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span><span class="mi">0</span><span class="p">)</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_g</span><span class="p">):</span>
<span class="k">if</span> <span class="n">air_table</span><span class="o">.</span><span class="n">g_ON</span><span class="p">:</span>
<span class="n">air_table</span><span class="o">.</span><span class="n">g_2d_mps2</span> <span class="o">=</span> <span class="n">air_table</span><span class="o">.</span><span class="n">gOFF_mps2</span>
<span class="n">air_table</span><span class="o">.</span><span class="n">coef_rest_puck</span> <span class="o">=</span> <span class="mf">1.00</span>
<span class="n">air_table</span><span class="o">.</span><span class="n">coef_rest_table</span> <span class="o">=</span> <span class="mf">1.00</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">air_table</span><span class="o">.</span><span class="n">g_2d_mps2</span> <span class="o">=</span> <span class="n">air_table</span><span class="o">.</span><span class="n">gON_mps2</span>
<span class="n">air_table</span><span class="o">.</span><span class="n">coef_rest_puck</span> <span class="o">=</span> <span class="mf">0.90</span>
<span class="n">air_table</span><span class="o">.</span><span class="n">coef_rest_table</span> <span class="o">=</span> <span class="mf">0.90</span>
<span class="n">air_table</span><span class="o">.</span><span class="n">g_ON</span> <span class="o">=</span> <span class="ow">not</span> <span class="n">air_table</span><span class="o">.</span><span class="n">g_ON</span>
<span class="nb">print</span> <span class="s2">"g"</span><span class="p">,</span> <span class="n">air_table</span><span class="o">.</span><span class="n">g_ON</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_F2</span><span class="p">):</span>
<span class="c1"># Toggle menu on/off</span>
<span class="c1">#air_table.gui_menu = not air_table.gui_menu</span>
<span class="k">pass</span>
<span class="c1"># Jet keys</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_a</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_a</span> <span class="o">=</span> <span class="s1">'D'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_s</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_s</span> <span class="o">=</span> <span class="s1">'D'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_d</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_d</span> <span class="o">=</span> <span class="s1">'D'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_w</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_w</span> <span class="o">=</span> <span class="s1">'D'</span>
<span class="c1"># Gun keys</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_j</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_j</span> <span class="o">=</span> <span class="s1">'D'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_k</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_k</span> <span class="o">=</span> <span class="s1">'D'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_l</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_l</span> <span class="o">=</span> <span class="s1">'D'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_i</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_i</span> <span class="o">=</span> <span class="s1">'D'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_SPACE</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_space</span> <span class="o">=</span> <span class="s1">'D'</span>
<span class="c1"># Zoom keys</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_b</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_b</span> <span class="o">=</span> <span class="s1">'D'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_n</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_n</span> <span class="o">=</span> <span class="s1">'D'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_m</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">m</span> <span class="o">=</span> <span class="s1">'D'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_h</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_h</span> <span class="o">=</span> <span class="s1">'D'</span>
<span class="c1"># Penetration correction</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_p</span><span class="p">):</span>
<span class="n">air_table</span><span class="o">.</span><span class="n">correct_for_puck_penetration</span> <span class="o">=</span> <span class="ow">not</span> <span class="n">air_table</span><span class="o">.</span><span class="n">correct_for_puck_penetration</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="s2">"nothing set up for this key"</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">type</span> <span class="o">==</span> <span class="n">pygame</span><span class="o">.</span><span class="n">KEYUP</span><span class="p">):</span>
<span class="c1"># Jet keys</span>
<span class="k">if</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_a</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_a</span> <span class="o">=</span> <span class="s1">'U'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_s</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_s</span> <span class="o">=</span> <span class="s1">'U'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_d</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_d</span> <span class="o">=</span> <span class="s1">'U'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_w</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_w</span> <span class="o">=</span> <span class="s1">'U'</span>
<span class="c1"># Gun keys</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_j</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_j</span> <span class="o">=</span> <span class="s1">'U'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_k</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_k</span> <span class="o">=</span> <span class="s1">'U'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_l</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_l</span> <span class="o">=</span> <span class="s1">'U'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_i</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_i</span> <span class="o">=</span> <span class="s1">'U'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_SPACE</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_space</span> <span class="o">=</span> <span class="s1">'U'</span>
<span class="c1"># Zoom keys</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_b</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_b</span> <span class="o">=</span> <span class="s1">'U'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_n</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_n</span> <span class="o">=</span> <span class="s1">'U'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_m</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_m</span> <span class="o">=</span> <span class="s1">'U'</span>
<span class="k">elif</span> <span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">key</span><span class="o">==</span><span class="n">K_h</span><span class="p">):</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">key_h</span> <span class="o">=</span> <span class="s1">'U'</span>
<span class="k">elif</span> <span class="n">event</span><span class="o">.</span><span class="n">type</span> <span class="o">==</span> <span class="n">pygame</span><span class="o">.</span><span class="n">MOUSEBUTTONDOWN</span><span class="p">:</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">buttonIsStillDown</span> <span class="o">=</span> <span class="kc">True</span>
<span class="p">(</span><span class="n">button1</span><span class="p">,</span> <span class="n">button2</span><span class="p">,</span> <span class="n">button3</span><span class="p">)</span> <span class="o">=</span> <span class="n">pygame</span><span class="o">.</span><span class="n">mouse</span><span class="o">.</span><span class="n">get_pressed</span><span class="p">()</span>
<span class="k">if</span> <span class="n">button1</span><span class="p">:</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">mouse_button</span> <span class="o">=</span> <span class="mi">1</span>
<span class="k">elif</span> <span class="n">button2</span><span class="p">:</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">mouse_button</span> <span class="o">=</span> <span class="mi">2</span>
<span class="k">elif</span> <span class="n">button3</span><span class="p">:</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">mouse_button</span> <span class="o">=</span> <span class="mi">3</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">mouse_button</span> <span class="o">=</span> <span class="mi">0</span>
<span class="k">elif</span> <span class="n">event</span><span class="o">.</span><span class="n">type</span> <span class="o">==</span> <span class="n">pygame</span><span class="o">.</span><span class="n">MOUSEBUTTONUP</span><span class="p">:</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">buttonIsStillDown</span> <span class="o">=</span> <span class="kc">False</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">mouse_button</span> <span class="o">=</span> <span class="mi">0</span>
<span class="c1"># In all cases, pass the event to the Gui.</span>
<span class="c1">#app.event(event)</span>
<span class="k">if</span> <span class="n">local_user</span><span class="o">.</span><span class="n">buttonIsStillDown</span><span class="p">:</span>
<span class="c1"># This will select a puck when the puck runs into the cursor of the mouse with it's button still down.</span>
<span class="n">local_user</span><span class="o">.</span><span class="n">cursor_location_px</span> <span class="o">=</span> <span class="p">(</span><span class="n">mouseX</span><span class="p">,</span> <span class="n">mouseY</span><span class="p">)</span> <span class="o">=</span> <span class="n">pygame</span><span class="o">.</span><span class="n">mouse</span><span class="o">.</span><span class="n">get_pos</span><span class="p">()</span>
<span class="c1"># Only check for a selected puck if one isn't already selected. This keeps</span>
<span class="c1"># the puck from unselecting if cursor is dragged off the puck!</span>
<span class="c1"># if not local_user.selected_puck:</span>
<span class="c1"># # Effectively waits for a puck to run over the cursor.</span>
<span class="c1"># local_user.selected_puck = air_table.checkForPuckAtThisPosition(mouseX, mouseY)</span>
<span class="k">class</span> <span class="nc">GameWindow</span><span class="p">:</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">screen_tuple_px</span><span class="p">,</span> <span class="n">title</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">width_px</span> <span class="o">=</span> <span class="n">screen_tuple_px</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">height_px</span> <span class="o">=</span> <span class="n">screen_tuple_px</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
<span class="c1"># The initial World position vector of the Upper Right corner of the screen.</span>
<span class="c1"># Yes, that's right y_px = 0 for UR.</span>
<span class="bp">self</span><span class="o">.</span><span class="n">UR_2d_m</span> <span class="o">=</span> <span class="n">env</span><span class="o">.</span><span class="n">ConvertScreenToWorld</span><span class="p">(</span><span class="n">Vec2D</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">width_px</span><span class="p">,</span> <span class="mi">0</span><span class="p">))</span>
<span class="c1"># Create a reference to the display surface object. This is a pygame "surface".</span>
<span class="c1"># Screen dimensions in pixels (tuple)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">surface</span> <span class="o">=</span> <span class="n">pygame</span><span class="o">.</span><span class="n">display</span><span class="o">.</span><span class="n">set_mode</span><span class="p">(</span><span class="n">screen_tuple_px</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">update_caption</span><span class="p">(</span><span class="n">title</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">surface</span><span class="o">.</span><span class="n">fill</span><span class="p">(</span><span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"black"</span><span class="p">])</span>
<span class="n">pygame</span><span class="o">.</span><span class="n">display</span><span class="o">.</span><span class="n">update</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">update_caption</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">title</span><span class="p">):</span>
<span class="n">pygame</span><span class="o">.</span><span class="n">display</span><span class="o">.</span><span class="n">set_caption</span><span class="p">(</span> <span class="n">title</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">caption</span> <span class="o">=</span> <span class="n">title</span>
<span class="k">def</span> <span class="nf">update</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">pygame</span><span class="o">.</span><span class="n">display</span><span class="o">.</span><span class="n">update</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">clear</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># Useful for shifting between the various demos.</span>
<span class="bp">self</span><span class="o">.</span><span class="n">surface</span><span class="o">.</span><span class="n">fill</span><span class="p">(</span><span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"black"</span><span class="p">])</span>
<span class="n">pygame</span><span class="o">.</span><span class="n">display</span><span class="o">.</span><span class="n">update</span><span class="p">()</span>
<span class="c1">#===========================================================</span>
<span class="c1"># Functions</span>
<span class="c1">#===========================================================</span>
<span class="k">def</span> <span class="nf">make_some_pucks</span><span class="p">(</span><span class="n">resetmode</span><span class="p">):</span>
<span class="n">game_window</span><span class="o">.</span><span class="n">update_caption</span><span class="p">(</span><span class="s2">"Air Table V.2: Demo #"</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="n">resetmode</span><span class="p">))</span>
<span class="k">if</span> <span class="n">resetmode</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span>
<span class="c1"># ,radius,density</span>
<span class="n">air_table</span><span class="o">.</span><span class="n">pucks</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> <span class="n">Puck</span><span class="p">(</span><span class="n">Vec2D</span><span class="p">(</span><span class="mf">2.5</span><span class="p">,</span> <span class="mf">7.5</span><span class="p">),</span> <span class="mf">0.25</span><span class="p">,</span> <span class="mf">0.3</span><span class="p">,</span> <span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"orange"</span><span class="p">]))</span>
<span class="n">air_table</span><span class="o">.</span><span class="n">pucks</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> <span class="n">Puck</span><span class="p">(</span><span class="n">Vec2D</span><span class="p">(</span><span class="mf">6.0</span><span class="p">,</span> <span class="mf">2.5</span><span class="p">),</span> <span class="mf">0.45</span><span class="p">,</span> <span class="mf">0.3</span><span class="p">))</span> <span class="c1"># maybe not.</span>
<span class="n">air_table</span><span class="o">.</span><span class="n">pucks</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> <span class="n">Puck</span><span class="p">(</span><span class="n">Vec2D</span><span class="p">(</span><span class="mf">7.5</span><span class="p">,</span> <span class="mf">2.5</span><span class="p">),</span> <span class="mf">0.65</span><span class="p">,</span> <span class="mf">0.3</span><span class="p">))</span>
<span class="n">air_table</span><span class="o">.</span><span class="n">pucks</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> <span class="n">Puck</span><span class="p">(</span><span class="n">Vec2D</span><span class="p">(</span><span class="mf">2.5</span><span class="p">,</span> <span class="mf">5.5</span><span class="p">),</span> <span class="mf">1.65</span><span class="p">,</span> <span class="mf">0.3</span><span class="p">))</span>
<span class="n">air_table</span><span class="o">.</span><span class="n">pucks</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> <span class="n">Puck</span><span class="p">(</span><span class="n">Vec2D</span><span class="p">(</span><span class="mf">7.5</span><span class="p">,</span> <span class="mf">7.5</span><span class="p">),</span> <span class="mf">0.95</span><span class="p">,</span> <span class="mf">0.3</span><span class="p">))</span>
<span class="k">elif</span> <span class="n">resetmode</span> <span class="o">==</span> <span class="mi">4</span><span class="p">:</span>
<span class="c1">#air_table.gON_mps2 = Vec2D(-0.0, -20.0)</span>
<span class="n">spacing_factor</span> <span class="o">=</span> <span class="mf">1.0</span>
<span class="n">grid_size</span> <span class="o">=</span> <span class="mi">9</span><span class="p">,</span><span class="mi">6</span> <span class="c1">#9,6</span>
<span class="k">for</span> <span class="n">j</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="n">grid_size</span><span class="p">[</span><span class="mi">0</span><span class="p">]):</span>
<span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="n">grid_size</span><span class="p">[</span><span class="mi">1</span><span class="p">]):</span>
<span class="k">if</span> <span class="p">((</span><span class="n">j</span><span class="p">,</span><span class="n">k</span><span class="p">)</span> <span class="o">==</span> <span class="p">(</span><span class="mi">2</span><span class="p">,</span><span class="mi">2</span><span class="p">)):</span>
<span class="n">air_table</span><span class="o">.</span><span class="n">pucks</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> <span class="n">Puck</span><span class="p">(</span><span class="n">Vec2D</span><span class="p">(</span><span class="n">spacing_factor</span><span class="o">*</span><span class="p">(</span><span class="n">j</span><span class="o">+</span><span class="mi">1</span><span class="p">),</span> <span class="n">spacing_factor</span><span class="o">*</span><span class="p">(</span><span class="n">k</span><span class="o">+</span><span class="mi">1</span><span class="p">)),</span> <span class="mf">0.25</span><span class="p">,</span> <span class="mf">5.0</span><span class="p">,</span> <span class="n">THECOLORS</span><span class="p">[</span><span class="s2">"orange"</span><span class="p">]))</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">air_table</span><span class="o">.</span><span class="n">pucks</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> <span class="n">Puck</span><span class="p">(</span><span class="n">Vec2D</span><span class="p">(</span><span class="n">spacing_factor</span><span class="o">*</span><span class="p">(</span><span class="n">j</span><span class="o">+</span><span class="mi">1</span><span class="p">),</span> <span class="n">spacing_factor</span><span class="o">*</span><span class="p">(</span><span class="n">k</span><span class="o">+</span><span class="mi">1</span><span class="p">)),</span> <span class="mf">0.25</span><span class="p">,</span> <span class="mf">5.0</span><span class="p">))</span>
<span class="c1">#Nudge the first puck a little</span>
<span class="c1">#air_table.pucks[53].pos_2d_m = air_table.pucks[53].pos_2d_m + Vec2D(0.00001 , 0.0)</span>
<span class="c1">#air_table.pucks[3].pos_2d_m = air_table.pucks[3].pos_2d_m + Vec2D(0.00001 , 0.0)</span>
<span class="k">elif</span> <span class="n">resetmode</span> <span class="o">==</span> <span class="mi">3</span><span class="p">:</span>
<span class="n">spacing_factor</span> <span class="o">=</span> <span class="mf">1.5</span>