NAME
        MoveSprite -- move sprite to a point relative to top of viewport.

   SYNOPSIS
        MoveSprite(vp, sprite, x, y)
                   A0  A1      D0 D1

        void MoveSprite(struct viewport *,struct simplesprite *, word, word);

   FUNCTION
        move sprite image to new place on display.

   INPUTS
        vp - pointer to viewport structure
             if vp = 0, sprite is positioned relative to view.
        sprite - pointer to simplesprite structure
        (x,y)  - new position relative to top of viewport or view.

   RESULTS
        Calculate the hardware information for the sprite and
        place it in the posctldata array. During next video display
        the sprite will appear in new position.

   BUGS
        Sprites really appear one pixel to the left of the position you specify.
        This bug affects the apparent display position of the sprite on the
        screen, but does not affect the numeric position relative to the
        viewport or view. This behaviour only applies to SimpleSprites,
        not to ExtSprites.


   SEE ALSO
        freesprite()  changesprite()  getsprite()  graphics/sprite.h