Gravity constant moved into constants.rb, camera can now report what it is looking at, entity has knowledge of camera now, AABB tree search can now use either BoundingBox or Ray colliders

lib/constants.rb

@@ -8,4 +8,9 @@ class IMICFPS
 
   # Objects exported from blender using the default or meter object scale will be close to 1 GL unit
   MODEL_METER_SCALE = 1.0
+
+  # Earth
+  GRAVITY = 9.8 # m/s
+  # Moon
+  # GRAVITY = 1.625 # m/s
 end

lib/managers/collision_manager.rb

@@ -19,17 +19,18 @@ class IMICFPS
         next unless node = @aabb_tree.objects[entity]
 
         unless entity.bounding_box == node.bounding_box
-          @aabb_tree.update(entity, entity.bounding_box)
+          puts "Updating #{entity.class}"
+          @aabb_tree.update(entity, entity.bounding_box.clone)
         end
       end
 
       check_broadphase
 
       @physics_manager.update
-
-      collisions.each do |ent, list|
-        # puts "#{ent.class} -> [#{list.map { |e| e.class }.join(', ')}] (#{Gosu.milliseconds})"
     end
+
+    def search(collider)
+      @aabb_tree.search(collider)
     end
 
     def remove(entity)

lib/objects/camera.rb

@@ -2,13 +2,11 @@ class IMICFPS
   class Camera
     include CommonMethods
 
-    attr_accessor :field_of_view, :pitch, :yaw, :roll, :mouse_sensitivity
-    attr_reader :entity, :position
+    attr_accessor :field_of_view, :mouse_sensitivity
+    attr_reader :entity, :position, :orientation, :mouse_captured
     def initialize(x: 0, y: 0, z: 0, fov: 70.0, view_distance: 155.0)
       @position = Vector.new(x,y,z)
-      @pitch = 0.0
-      @yaw   = 0.0
-      @roll  = 0.0
+      @orientation = Vector.new(0, 0, 0)
       @field_of_view = fov
       @view_distance = view_distance
       @constant_pitch = 20.0
@@ -17,8 +15,8 @@ class IMICFPS
       @distance = 4
       @origin_distance = @distance
 
-      self.mouse_x, self.mouse_y = window.width/2, window.height/2
-      @true_mouse = Point.new(window.width/2, window.height/2)
+      self.mouse_x, self.mouse_y = window.width / 2, window.height / 2
+      @true_mouse = Point.new(window.width / 2, window.height / 2)
       @mouse_sensitivity = 20.0 # Less is faster, more is slower
       @mouse_captured = true
       @mouse_checked = 0
@@ -27,9 +25,11 @@ class IMICFPS
     def attach_to(entity)
       raise "Not an Entity!" unless entity.is_a?(Entity)
       @entity = entity
+      @entity.attach_camera(self)
     end
 
     def detach
+      @entity.detach_camera
       @entity = nil
     end
 
@@ -61,7 +61,7 @@ class IMICFPS
       @position.y = @entity.position.y + 2
       @position.z = @entity.position.z - z_offset
 
-      @yaw = 180 - @entity.rotation.y
+      @orientation.y = 180 - @entity.rotation.y
     end
 
     def draw
@@ -71,8 +71,8 @@ class IMICFPS
       # Calculates aspect ratio of the window. Gets perspective  view. 45 is degree viewing angle, (0.1, 100) are ranges how deep can we draw into the screen
       gluPerspective(@field_of_view, window.width / window.height, 0.1, @view_distance)
       glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST)
-      glRotatef(@pitch,1,0,0)
-      glRotatef(@yaw,0,1,0)
+      glRotatef(@orientation.z, 1, 0, 0)
+      glRotatef(@orientation.y, 0, 1, 0)
       glTranslatef(-@position.x, -@position.y, -@position.z)
       glMatrixMode(GL_MODELVIEW) # The modelview matrix is where object information is stored.
       glLoadIdentity
@@ -82,25 +82,30 @@ class IMICFPS
     def update
       if @mouse_captured
 
-        delta = Float(@true_mouse.x-self.mouse_x)/(@mouse_sensitivity*@field_of_view)*70
-        @yaw -= delta
-        @yaw %= 360.0
+        delta = Float(@true_mouse.x - self.mouse_x) / (@mouse_sensitivity * @field_of_view) * 70
+        @orientation.y -= delta
+        @orientation.y %= 360.0
 
-        @pitch -= Float(@true_mouse.y-self.mouse_y)/(@mouse_sensitivity*@field_of_view)*70
-        @pitch = @pitch.clamp(-90.0, 90.0)
+        @orientation.z -= Float(@true_mouse.y - self.mouse_y) / (@mouse_sensitivity * @field_of_view) * 70
+        @orientation.z = @orientation.z.clamp(-90.0, 90.0)
 
         @entity.rotation.y += delta if @entity
         free_move unless @entity
         position_camera if @entity
 
-        self.mouse_x = window.width/2 if self.mouse_x <= 1 || window.mouse_x >= window.width-1
-        self.mouse_y = window.height/2 if self.mouse_y <= 1 || window.mouse_y >= window.height-1
+        self.mouse_x = window.width  / 2 if self.mouse_x <= 1 || window.mouse_x >= window.width-1
+        self.mouse_y = window.height / 2 if self.mouse_y <= 1 || window.mouse_y >= window.height-1
         @true_mouse.x, @true_mouse.y = self.mouse_x, self.mouse_y
       end
     end
 
+    def looking_at
+      ray = Ray.new(@position, @orientation.direction * -1)
+      window.current_state.collision_manager.search(ray)
+    end
+
     def free_move
-      relative_y_rotation = (@yaw + 180)
+      relative_y_rotation = (@orientation.y + 180)
       relative_speed = 0.25
 
       if InputMapper.down?( :forward)

lib/objects/entities/player.rb

@@ -90,6 +90,9 @@ class IMICFPS
     end
 
     def update
+      # Do not handle movement if mouse is not captured
+      return if @camera && !@camera.mouse_captured
+
       relative_speed = @speed
       if InputMapper.down?(:sprint)
         relative_speed = @running_speed

lib/objects/entity.rb

@@ -7,7 +7,7 @@ class IMICFPS
 
     attr_accessor :scale, :visible, :renderable, :backface_culling
     attr_accessor :position, :rotation, :velocity
-    attr_reader :name, :debug_color, :bounding_box, :collision, :physics, :mass, :drag
+    attr_reader :name, :debug_color, :bounding_box, :collision, :physics, :mass, :drag, :camera
 
     def initialize(x: 0, y: 0, z: 0, bound_model: nil, scale: MODEL_METER_SCALE, backface_culling: true, auto_manage: true, manifest_file: nil)
       @position = Vector.new(x, y, z)
@@ -43,6 +43,8 @@ class IMICFPS
         normalize_bounding_box
       end
 
+      @camera = nil
+
       return self
     end
 
@@ -70,6 +72,14 @@ class IMICFPS
       @bound_model = nil
     end
 
+    def attach_camera(camera)
+      @camera = camera
+    end
+
+    def detach_camera
+      @camera = nil
+    end
+
     def setup
     end
 

lib/states/game_states/game.rb

@@ -1,5 +1,7 @@
 class IMICFPS
   class Game < GameState
+
+    attr_reader :collision_manager
     def setup
       @collision_manager = CollisionManager.new(game_state: self)
       @renderer = Renderer.new(game_state: self)
@@ -154,7 +156,7 @@ OpenGL Renderer: #{glGetString(GL_RENDERER)}
 OpenGL Version: #{glGetString(GL_VERSION)}
 OpenGL Shader Language Version: #{glGetString(GL_SHADING_LANGUAGE_VERSION)}
 
-Camera pitch: #{@camera.pitch.round(2)} Yaw: #{@camera.yaw.round(2)} Roll #{@camera.roll.round(2)}
+Camera pitch: #{@camera.orientation.z.round(2)} Yaw: #{@camera.orientation.y.round(2)} Roll #{@camera.orientation.x.round(2)}
 Camera X:#{@camera.position.x.round(2)} Y:#{@camera.position.y.round(2)} Z:#{@camera.position.z.round(2)}
 #{if @camera.entity then "Actor X:#{@camera.entity.position.x.round(2)} Y:#{@camera.entity.position.y.round(2)} Z:#{@camera.entity.position.z.round(2)}";end}
 Field Of View: #{@camera.field_of_view}

lib/trees/aabb_node.rb

@@ -55,13 +55,13 @@ class IMICFPS
         end
       end
 
-      def search_subtree(bounding_box, items = [])
-        if @bounding_box.intersect?(bounding_box)
+      def search_subtree(collider, items = [])
+        if @bounding_box.intersect?(collider)
           if leaf?
             items << self
           else
-            @a.search_subtree(bounding_box, items)
-            @b.search_subtree(bounding_box, items)
+            @a.search_subtree(collider, items)
+            @b.search_subtree(collider, items)
           end
         end
 

lib/trees/aabb_tree.rb

@@ -35,11 +35,11 @@ class IMICFPS
       insert_leaf(leaf)
     end
 
-    # Returns a list of all collided objects inside Bounding Box
-    def search(bounding_box, return_nodes = false)
+    # Returns a list of all objects that collided with collider
+    def search(collider, return_nodes = false)
       items = []
       if @root
-        items = @root.search_subtree(bounding_box)
+        items = @root.search_subtree(collider)
         items.map! {|e| e.object} unless return_nodes
       end
 

lib/window.rb

@@ -1,6 +1,4 @@
 class IMICFPS
-  GRAVITY = 9.8 # m/s
-
   class Window < CyberarmEngine::Engine
     attr_accessor :number_of_vertices, :needs_cursor
     attr_reader :camera