map.h

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#ifndef _MAP_H_
#define _MAP_H_
 
 
#include "vdp.h"
#include "vdp_tile.h"
#include "pal.h"
 
// forward
typedef struct Map Map;

typedef enum
{
    ROW_UPDATE,        
    COLUMN_UPDATE      
} MapUpdateType;

typedef void MapDataPatchCallback(Map *map, u16 *buf, u16 x, u16 y, MapUpdateType updateType, u16 size);
 

typedef struct
{
    u16 w;
    u16 h;
    u16 hp;
    u16 compression;
    u16 numMetaTile;
    u16 numBlock;
    u16 *metaTiles;
    void* blocks;
    void* blockIndexes;
    u16* blockRowOffsets;
} MapDefinition;

typedef struct Map
{
    u16 w;
    u16 h;
    u16* metaTiles;
    void* blocks;
    void* blockIndexes;
    u16* blockRowOffsets;
    VDPPlane plane;
    u16 baseTile;
    u32 posX;
    u32 posY;
    u16 wMask;
    u16 hMask;
    u16 planeWidth;
    u16 planeHeight;
    u16 planeWidthMaskAdj;
    u16 planeHeightMaskAdj;
    u16 planeWidthSftAdj;
    u16 firstUpdate;
    u16 lastXT;
    u16 lastYT;
    u16 hScrollTable[240];
    u16 vScrollTable[20];
    void (*prepareMapDataColumnCB)(Map *map, u16 *bufCol1, u16 *bufCol2, u16 xm, u16 ym, u16 height);
    void (*prepareMapDataRowCB)(Map *map, u16 *bufRow1, u16 *bufRow2, u16 xm, u16 ym, u16 width);
    MapDataPatchCallback* mapDataPatchCB;
    u16  (*getMetaTileCB)(Map *map, u16 x, u16 y);
    void (*getMetaTilemapRectCB)(Map *map, u16 x, u16 y, u16 w, u16 h, u16* dest);
} Map;
 

Map* MAP_create(const MapDefinition* mapDef, VDPPlane plane, u16 baseTile);

void MAP_release(Map* map);

void MAP_scrollTo(Map* map, u32 x, u32 y);
void MAP_scrollToEx(Map* map, u32 x, u32 y, bool forceRedraw);

u16 MAP_getMetaTile(Map* map, u16 x, u16 y);
u16 MAP_getTile(Map* map, u16 x, u16 y);
void MAP_getMetaTilemapRect(Map* map, u16 x, u16 y, u16 w, u16 h, u16* dest);
void MAP_getTilemapRect(Map* map, u16 x, u16 y, u16 w, u16 h, bool column, u16* dest);

void MAP_setDataPatchCallback(Map* map, MapDataPatchCallback *CB);

void MAP_overridePlaneSize(Map* map, u16 w, u16 h);
 
 
#endif // _MAP_H_