vdp_spr.h

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#include "config.h"
#include "types.h"
#include "dma.h"

#ifndef _VDP_SPR_H_
#define _VDP_SPR_H_

#define MAX_VDP_SPRITE          80

#define SPRITE_SIZE(w, h)   ((((w) - 1) << 2) | ((h) - 1))


typedef struct
{
    s16 y;
    union
    {
        struct {
            u8 size;
            u8 link;
        };
        u16 size_link;
    };
    u16 attribut;
    s16 x;
}  VDPSprite;


extern VDPSprite vdpSpriteCache[MAX_VDP_SPRITE];

extern VDPSprite* lastAllocatedVDPSprite;
extern s16 highestVDPSpriteIndex;


void VDP_resetSprites();

void VDP_releaseAllSprites();

s16 VDP_allocateSprites(u16 num);
void VDP_releaseSprites(u16 index, u16 num);
u16 VDP_getAvailableSprites();
s16 VDP_refreshHighestAllocatedSpriteIndex();

void VDP_clearSprites();
void VDP_setSpriteFull(u16 index, s16 x, s16 y, u8 size, u16 attribut, u8 link);
void VDP_setSprite(u16 index, s16 x, s16 y, u8 size, u16 attribut);
void VDP_setSpritePosition(u16 index, s16 x, s16 y);
void VDP_setSpriteSize(u16 index, u8 size);
void VDP_setSpriteAttribut(u16 index, u16 attribut);
void VDP_setSpriteLink(u16 index, u8 link);
VDPSprite* VDP_linkSprites(u16 index, u16 num);

void VDP_updateSprites(u16 num, TransferMethod tm);


#endif // _VDP_SPR_H_