added sample7. working. can pick objects now

lib/sample7.rb

@@ -0,0 +1,127 @@
+java_import "com.jme3.app.SimpleApplication"
+java_import "com.jme3.collision.CollisionResult"
+java_import "com.jme3.collision.CollisionResults"
+java_import "com.jme3.font.BitmapText"
+java_import "com.jme3.input.KeyInput"
+java_import "com.jme3.input.MouseInput"
+java_import "com.jme3.input.controls.ActionListener"
+java_import "com.jme3.input.controls.KeyTrigger"
+java_import "com.jme3.input.controls.MouseButtonTrigger"
+java_import "com.jme3.light.DirectionalLight"
+java_import "com.jme3.material.Material"
+java_import "com.jme3.math.ColorRGBA"
+java_import "com.jme3.math.Ray"
+java_import "com.jme3.math.Vector3f"
+java_import "com.jme3.scene.Geometry"
+java_import "com.jme3.scene.Node"
+java_import "com.jme3.scene.Spatial"
+java_import "com.jme3.scene.shape.Box"
+java_import "com.jme3.scene.shape.Sphere"
+
+class Sample7 < SimpleApplication
+  field_reader :settings, :cam
+  attr_accessor :shootables, :mark
+
+  def simpleInitApp
+    begin
+    self.shootables = Node.new("Shootables")
+    root_node.attach_child(shootables)
+    shootables.attach_child(make_cube("a Dragon", -2.0, 0.0, 1.0))
+    shootables.attach_child(make_cube("a tin can", 1.0, -2.0, 0.0))
+    shootables.attach_child(make_cube("the Sheriff", 0.0, 1.0, -2.0))
+    shootables.attach_child(make_cube("the Deputy", 1.0, 0.0, -4.0))
+    shootables.attach_child(make_floor)
+    shootables.attach_child(make_character)
+    init_cross_hairs!
+    init_keys!
+    init_mark!
+    rescue => e
+      puts "\n\nFAIL! #{e}"
+    end
+  end
+
+  def init_keys!
+    input_manager.add_mapping("Shoot", KeyTrigger.new(KeyInput::KEY_SPACE), MouseButtonTrigger.new(MouseInput::BUTTON_LEFT))
+    input_manager.add_listener(ControllerAction.new(self), "Shoot")
+  end
+
+  def init_mark!
+    sphere = Sphere.new(30, 30, 0.2)
+    self.mark = Geometry.new("BOOM!", sphere)
+    mark_mat = Material.new(asset_manager, File.join("Common", "MatDefs", "Misc", "Unshaded.j3md"))
+    mark_mat.set_color("Color", ColorRGBA::Red)
+    mark.material = mark_mat
+  end
+
+  def init_cross_hairs!
+    gui_node.detach_all_children
+    gui_font = asset_manager.load_font(File.join("Interface", "Fonts", "Default.fnt"))
+    ch = BitmapText.new(gui_font, false)
+    ch.size = gui_font.char_set.rendered_size * 2
+    ch.text = "+"
+    ch.set_local_translation(settings.width / 2 - gui_font.char_set.rendered_size / 3 * 2, settings.height / 2 + ch.line_height / 2, 0)
+    gui_node.attach_child(ch)
+  end
+
+  def make_character
+    golem = asset_manager.load_model(File.join("Models", "Oto", "Oto.mesh.xml"))
+    golem.scale(0.5)
+    golem.set_local_translation(-1.0, -1.5, -0.6)
+    sun = DirectionalLight.new
+    sun.direction = Vector3f.new(-0.1, -0.7, -1.0)
+    golem.add_light(sun)
+    golem
+  end
+
+  def make_cube(name, x, y, z)
+    box = Box.new(Vector3f.new(x, y, z), 1, 1, 1)
+    cube = Geometry.new(name, box)
+    matl = Material.new(asset_manager, File.join("Common", "MatDefs", "Misc", "Unshaded.j3md"))
+    matl.set_color("Color", ColorRGBA.random_color)
+    cube.material = matl
+    cube
+  end
+
+  def make_floor
+    box = Box.new(Vector3f.new(0, -4, -5), 15, 0.2, 15)
+    floor = Geometry.new("the Floor", box)
+    matl = Material.new(asset_manager, File.join("Common", "MatDefs", "Misc", "Unshaded.j3md"))
+    matl.set_color("Color", ColorRGBA::Gray)
+    floor.material = matl
+    floor
+  end
+
+  class ControllerAction
+    include ActionListener
+
+    def initialize(obj)
+      @parent = obj
+    end
+
+    def on_action(name, key_pressed, time_per_frame)
+      if name.eql?("Shoot") && !key_pressed
+        results = CollisionResults.new
+        ray = Ray.new(@parent.cam.location, @parent.cam.direction)
+        @parent.shootables.collide_with(ray, results)
+        puts "\n\n Collisions? #{results.size} \n\n"
+        results.each_with_index do |result, index|
+          dist = results.get_collision(index).distance
+          pt = results.get_collision(index).contact_point
+          hit = results.get_collision(index).geometry.name
+          puts "\n\n* Collision # #{index}"
+          puts " You shot #{hit} at #{pt}, #{dist} wu away.\n\n"
+        end
+
+        if results.size > 0
+          closest = results.closest_collision
+          @parent.mark.local_translation = closest.contact_point
+          @parent.root_node.attach_child(@parent.mark)
+        else
+          @parent.root_node.detach_child(@parent.mark)
+        end
+      end
+    end
+  end  
+
+
+end