Docs » Autodocs » graphics.library » ChangeSprite
ChangeSprite -- Change the sprite image pointer.
ChangeSprite( vp, s, newdata)
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void ChangeSprite(struct ViewPort *, struct SimpleSprite *, void * )
The sprite image is changed to use the data starting at newdata
vp - pointer to ViewPort structure that this sprite is
relative to, or 0 if relative only top of View
s - pointer to SimpleSprite structure
newdata - pointer to data structure of the following form.
struct spriteimage
{
UWORD posctl[2]; /* used by simple sprite machine*/
UWORD data[height][2]; /* actual sprite image */
UWORD reserved[2]; /* initialized to */
/* 0x0,0x0 */
};
The programmer must initialize reserved[2]. Spriteimage must be
in CHIP memory. The height subfield of the SimpleSprite structure
must be set to reflect the height of the new spriteimage BEFORE
calling ChangeSprite(). The programmer may allocate two sprites to
handle a single attached sprite. After GetSprite(), ChangeSprite(),
the programmer can set the SPRITE_ATTACHED bit in posctl[1] of the
odd numbered sprite.
If you need more than 8 sprites, look up VSprites in the
graphics documentation.
FreeSprite(), ChangeSprite(), MoveSprite(), AddVSprite(), <graphics/sprite.h>
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