function GameStep()
  if not do_pause then
    SetCollisionFlags(main_Player)
    for _, particle in pairs(LoadedParticles) do
      particle:Smart()
      particle:DoPhysics()
    end
    for _, enty in pairs(LoadedEntities) do
      enty:Smart()
      enty:DoPhysics()
    end
    AnimateTiles()
    Camera:positionCenterAt(main_Player.pos.x, main_Player.pos.y)
    --camera:positionAt(main_Player.pos.x, main_Player.pos.y,game.width,game.height)
  end

	if Keybind:HasPressed(Keybind.debug.debug) then
		if debug then
			debug = false
			debug_collision = true
		elseif debug_collision then
		 debug_collision = false
		else
		 debug = true
		end
	end

	if Keybind:HasPressed(Keybind.debug.reposition) then
		if not editor_mode then
			main_Player.pos.x, main_Player.pos.y = 16,-10
		end
	end

	if Keybind:HasPressed(Keybind.debug.reload) then
		LoadLevel()
	end

	if Keybind:HasPressed(Keybind.debug.editor) then
		editor_mode = true
	end
end

function GameDraw()

  GameworldDrawPrepare()
  GameworldDrawParticles()
  GameworldDrawBackground()
  GameworldDrawEntities()
  GameworldDrawForeground()
  GameworldDrawEnd()
  GameworldDrawLighting()

	-- hud
	textScale = 0.5

  -- debug
  if debug then DebugUI() end
  if debug_collision then
  	DebugColisions()
  	DebugEntities()
  end
end