参数 描述 anim_name The animation name to get the frames of.
This function can be used to retrieve the number of frames that any given skeleton animation has. You supply the skeleton animation name (as a string, as defined in the program used to make the animation, or as returned by using the function skeleton_animation_get, and the function returns the frames that it has as an integer value. The function will return 0 if the specified animation does not exist.重要！该函数在试用版（Trial License）产品中不可用。
var num =
image_index = num -1;
image_speed = 0;
The above code will get the number of frames in the animation and then set the sprite to the last frame and stop animating.