Designing Games with Game Maker - YoYo Games

sprite_get_bbox_left(ind) Returns the left side of the bounding box of
the sprite with the given index.
sprite_get_bbox_right(ind) Returns the right side of the bounding box
of the sprite with the given index.
sprite_get_bbox_top(ind) Returns the top side of the bounding box of
the sprite with the given index.
sprite_get_bbox_bottom(ind) Returns the bottom side of the bounding
box of the sprite with the given index.
sprite_get_bbox_mode(ind) Returns the bounding box mode
(0=automatic, 1=full image, 2=manual) of the sprite with the given index.
sprite_get_precise(ind) Returns whether the sprite with the given index
uses precise collision checking.
In certain situations you might want to save the bitmap corresponding to a particular
subimage of the sprite to a file. For this the following function can be used:
Sounds
sprite_save(ind,subimg,fname) Saves subimage subimg of sprite ind to
the file with the name fname. This must be a .bmp file. Only available in the
Pro Edition.
The following functions will give you information about a sound:
sound_exists(ind) Returns whether a sound with the given index exists.
sound_get_name(ind) Returns the name of the sound with the given index.
sound_get_kind(ind) Returns the kind of the sound with the given index
(0=normal, 1=background, 2=3d, 3=mmplayer).
sound_get_preload(ind) Returns whether the sound with the given index
has preload set.
Sounds use many resources and most systems can store and play only a limited number of
sounds. If you make a large game you would like to have more control over which sounds are
loaded in audio memory at what times. You can use the switch off the preload option for
sounds to make sure sounds are only loaded when used. This though has the problem that
you might get a small hiccup when the sound is used first. Also, sounds are not automatically
unloaded when you don't need them anymore. For more control you can use the following
functions.