extends Sprite

var zoom = Vector2(1.0, 1.0);
var xOffset;
var yOffset;

var screenWidth;
var screenHeight;

func _ready():
	screenWidth = SettingsSingleton.GetCurrectScreenResolutionVector2().x
	screenHeight = SettingsSingleton.GetCurrectScreenResolutionVector2().y
	
func _process(_delta):
	
	xOffset = (1 - zoom.x) * (self.get_global_transform_with_canvas().origin.x) / screenWidth;
	yOffset = (1 - zoom.y) * (screenHeight - self.get_global_transform_with_canvas().origin.y) / screenHeight;

	var tiling = Vector2(zoom.x, zoom.y);
	var offset = Vector2(xOffset, yOffset);

	self.material.set_shader_param("offset", offset);
	self.material.set_shader_param("tiling", tiling);