spd = 4;

//movement
yy = spd*(keyboard_check(vk_down)-keyboard_check(vk_up));

xx = spd*(keyboard_check(vk_right)-keyboard_check(vk_left));
	if (xx != 0)
		{
			sprite_index = sPlayerWalkRight;
		}

	else
		{
			sprite_index = sPlayerIdle;
		}