function check_hitstop()
{
	if global.hitstop > 0
	{
		image_speed = 0;
		return true;
	}
	else
	{
		image_speed = 1;
		return false;
	}
}
/// @desc 优雅地检测该实例的sprite当前动画是否到达最后一帧
function animation_end()
{
	if (image_speed == 0)
		return false;
    return (image_index + image_speed >= image_number);
}

function camera_snap()
{
	oCamera.x = oCamera.x_to;
	oCamera.y = oCamera.y_to;	
}