/// @desc draw_sprite_shake(sprite, subimg, x, y, xscale, yscale, rot, col, alpha, hardness, motionblur)
/// @function draw_sprite_shake
/// @args sprite,subimg,x,y,xscale,yscale,rot,col,alpha,hardness,motionblur

var spr = argument[0]
var subimg = argument[1]
var xx = argument[2]
var yy = argument[3]
var xscale = argument[4]
var yscale = argument[5]
var rot = argument[6]
var col = argument[7]
var alpha = argument[8]
var hardness = argument[9]
var motionblur = argument[10]

if motionblur
var usize = shader_get_uniform(shBlur,"size");
var plusx = irandom_range(-hardness,hardness)
var plusy = irandom_range(-hardness,hardness)

//if !variable_instance_exists(id,"scr_surface") scr_surface=noone

while true
{
	if surface_exists(scr_surface)
	{
		surface_resize(scr_surface,room_width,room_height)
		surface_set_target(scr_surface)
			draw_sprite_ext(spr,subimg,xx+plusx,yy+plusy,xscale,yscale,rot,col,alpha)
		surface_reset_target()

		if motionblur
		{
			shader_set(shBlur)
			shader_set_uniform_f(usize,sprite_get_width(spr),sprite_get_height(spr),hardness/1.5)
		}
			draw_surface(scr_surface,0,0)
		shader_reset()
		break;
	}
	else
	{
		scr_surface = surface_create(room_width,room_height)
		if !variable_global_exists("sprshakesurfaces")
			global.sprshakesurfaces = 0
		if !ds_exists(global.sprshakesurfaces, ds_type_list)
			global.sprshakesurfaces = ds_list_create()
		ds_list_add(global.sprshakesurfaces, scr_surface)
	}
}