layer_background_get_yscale


描述

This function can be used to get the current scale multiplier value of the background element. You give the background element ID (which you get when you create a background element using layer_background_create() or when you use the function layer_background_get_id()), and the function will return real value that represents the scale multiplier being used to draw the sprite. Default value is 1.


语法:

layer_background_get_yscale(background_element_id);


参数:

参数 描述
background_element_id The unique ID value of the background element to get the information from


Returns:

实数


例如:

var lay_id = layer_get_id("Background_sky");
var back_id = layer_background_get_id(lay_id);
if layer_background_get_yscale(back_id) != -1
   {
   layer_background_yscale(back_id, -1);
   }

The above code will get the layer ID for the layer named "Background_sky" and then use that to get the ID of the background element on that layer. This ID is then used to check the y scale for the element and if it is not -1, it is set to -1.


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