Returns the alpha value of a given tile.



Argument Description
index The index of the tile to check.

Returns: Real


This function returns the current alpha value for the given tile, alpha is the "transparency" of the image and is measured from 0 to 1, where 0 is completely transparent and 1 is completely opaque.


var tile;
tile = tile_layer_find(-1000, mouse_x, mouse_y);
alpha = tile_get_alpha(tile);

The above code will first get the index of a tile at the mouse position with a depth of -1000 and then use that value to store the alpha value in the variable "alpha".

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