Draws a surface at a given position with scaling, blending and alpha, and tiles it to fill the entire room.
draw_surface_tiled_ext(back, x, y, xscale, yscale, color, alpha);
This function will take a surface and then repeatedly tile it across the whole room, starting from the coordinates that you give in the function and with each tile scaled, color blended and with the alpha that you define (these properties are the same as those used in draw_surface_ext).
サーフェースはいつでも破棄される可能性があります。ですのでsurface_exists()関数を使用して常に存在チェックをする必要があります。詳細についてはサーフェース機能についてを参照してください
draw_surface_tiled_ext(surf, x, y, 2, 2, c_red, 0.5);
This will draw the surface indexed in "surf" at the instances own x and y position, double its stored size and tiled in every direction in the room, as well as blended with the color red and partially transparent.