Set up server in preparation for multiplayer games

game.html

@@ -12,7 +12,7 @@ <h2>Hit some balls!</h2>
     <canvas id="myCanvas" width="500" height="500">
     </canvas>
 
-    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
+    <script src="js/jquery-1.4.2.min.js"></script>
     <script src="js/cue.js"></script>
     <script src="js/ball.js"></script>
     <script src="js/pit.js"></script>

js/comms.js

@@ -10,17 +10,16 @@ function setup(){
   });
 };
 
+function send(string){
+  socket.send(string);
+}
+
 function connect(){
   socket = new WebSocket('ws://127.0.0.1:8080');
   socket.onmessage = function(mess) {
     var data = $.parseJSON(mess.data);
-    // var data = JSON.parse(mess.data);
     console.log(data);
-
     balls = data['balls'];
-    // console.log(data['balls']);
-    // console.log(data['balls'][0]);
-    // balls = data['balls'];
   };
 
 };

js/game.js

@@ -25,6 +25,10 @@ var balls = new Array();
 function init(){
   context = myCanvas.getContext('2d');
 }
+function shoot(vx, vy){
+  cue.vx = vx;
+  cue.vy = vy;
+}
 function tick(){
   draw();
   cue.move();
@@ -109,10 +113,12 @@ $('canvas').mouseup(function(e){
     my = e.pageY - offset.top
     calculateCuePull();
 
-    var dx = cue.x-mx;
-    var dy = cue.y-my;
-    cue.vx = (dx*cueSpeedMultiplier);
-    cue.vy = (dy*cueSpeedMultiplier);
+    var distX = cue.x-mx;
+    var distY = cue.y-my;
+    var vx = (distX*cueSpeedMultiplier);
+    var vy = (distY*cueSpeedMultiplier);
+    send(vx + '/' +vy);
+    shoot(vx, vy);
   }
   shooting=false;
 });

rb/ball.rb

@@ -0,0 +1,16 @@
+class Ball
+  attr_accessor :x, :y, :vx, :vy
+  def initialize(x, y)
+    self.x = x
+    self.y = y
+    self.vx = 0
+    self.vy = 0
+  end
+  def to_json(*a){
+      :x=>x,
+      :y=>y,
+      :vx=>vx,
+      :vy=>vy
+    }.to_json(*a)
+  end
+end

rb/cue.rb

@@ -0,0 +1,7 @@
+class Cue
+  attr_accessor :x, :y
+  def initialize
+    self.x = 200
+    self.y = 200
+  end
+end

rb/game.rb

@@ -0,0 +1,60 @@
+class Game
+  attr_accessor :cue, :players, :pits
+  attr_accessor :players, :balls
+
+  def self.width
+    500
+  end
+  def self.height
+    500
+  end
+
+  def initialize(player)
+    self.balls = []
+    self.pits = []
+    self.players = []
+    self.players << player
+
+    pits << Pit.new(75,75)
+    pits << Pit.new(Game::width-75, 75)
+    pits << Pit.new(75, Game::height-75)
+    pits << Pit.new(Game::width-75, Game::height-75)
+
+    self.cue = Cue.new
+    10.times {generate_ball}
+  end
+  def add_player(player)
+    raise unless players.length > 1
+  end
+
+  def generate_ball
+    ballX = 0
+    ballY = 0
+    overlap = false
+    begin
+      overlap = false
+      ballX = 50+rand(400)
+      ballY = 50+rand(400)
+
+      balls.each do |ball|
+        if (dist(ball.x, ball.y, ballX, ballY) < 40)
+          overlap = true
+        end
+      end
+      if (dist(cue.x, cue.y, ballX, ballY) < 40)
+        overlap = true
+      end
+      pits.each do |pit|
+        if (dist(pit.x, pit.y, ballX, ballY) < 40)
+          overlap = true
+        end
+      end
+    end while overlap==true
+
+    balls << Ball.new(ballX, ballY)
+  end
+
+  def other_players(player)
+    players.reject{|p| p==player}
+  end
+end

rb/pit.rb

@@ -0,0 +1,7 @@
+class Pit
+  attr_accessor :x, :y
+  def initialize(x,y)
+    self.x = x
+    self.y = y
+  end
+end

rb/player.rb

@@ -0,0 +1,6 @@
+class Player
+  attr_accessor :socket
+  def initialize(socket)
+    self.socket = socket
+  end
+end

rb/server.rb

@@ -0,0 +1,62 @@
+require 'rubygems'
+require 'eventmachine'
+require 'em-websocket'
+require 'json'
+
+require 'pit'
+require 'cue'
+require 'ball'
+require 'game'
+require 'player'
+
+width = 500
+height = 500
+
+def dist(x1, y1, x2, y2)
+  x_diff = (x1-x2) ** 2
+  y_diff = (y1-y2) ** 2
+  res = Math.sqrt( x_diff + y_diff )
+  res<0 ? -res : res
+end
+
+@games = []
+@players = []
+EventMachine.run do
+  EventMachine::WebSocket.start(:host => '0.0.0.0', :port => 8080) do |socket|
+    socket.onopen do
+      begin
+        puts 'user joined'
+        # player = Player.new
+        player = Player.new(socket)
+        @players << player
+        game = Game.new(player)
+        @games << game
+        socket.send({:balls=>game.balls}.to_json)
+      rescue Exception => e
+          puts e.inspect
+          puts e.backtrace
+      end
+    end
+    socket.onmessage do |mess|
+      puts "move received"
+      array = mess.split '/'
+      # puts array
+      player = @players.find{|p| p.socket = socket }
+      game = @games.find{|g| g.players.include? player }
+      # game.move(socket, array[0], array[1])
+      game.other_players(player).each do |s|
+        s.send mess
+      end
+    end
+    socket.onclose do
+      # puts @games.inspect
+      # player = @players.find{|p| p.socket = socket }
+      # game = @games.find{|g| g.players.include player}
+      # game.players.delete player
+      # @players.delete player
+      puts 'user left'
+    end
+  end
+
+  `open /Users/skattyadz/code/couronne/game.html`
+end