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/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