1 files changed, 319 insertions, 0 deletions
diff --git a/gflib/sprite.h b/gflib/sprite.h
new file mode 100644
index 000000000..9753837fd
--- /dev/null
+++ b/gflib/sprite.h
@@ -0,0 +1,319 @@
+#ifndef GUARD_SPRITE_H
+#define GUARD_SPRITE_H
+
+#define MAX_SPRITES 64
+#define SPRITE_INVALID_TAG 0xFFFF
+
+struct SpriteSheet
+{
+    const void *data;  // Raw uncompressed pixel data
+    u16 size;
+    u16 tag;
+};
+
+struct CompressedSpriteSheet
+{
+    const u32 *data;  // LZ77 compressed pixel data
+    u16 size;        // Uncompressed size of pixel data
+    u16 tag;
+};
+
+struct SpriteFrameImage
+{
+    const void *data;
+    u16 size;
+};
+
+#define obj_frame_tiles(ptr) {.data = (u8 *)ptr, .size = sizeof ptr}
+
+#define overworld_frame(ptr, width, height, frame) {.data = (u8 *)ptr + (width * height * frame * 64)/2, .size = (width * height * 64)/2}
+
+struct SpritePalette
+{
+    const u16 *data;  // Raw uncompressed palette data
+    u16 tag;
+};
+
+struct CompressedSpritePalette
+{
+    const u32 *data;  // LZ77 compressed palette data
+    u16 tag;
+};
+
+struct AnimFrameCmd
+{
+    // If the sprite has an array of images, this is the array index.
+    // If the sprite has a sheet, this is the tile offset.
+    u32 imageValue:16;
+
+    u32 duration:6;
+    u32 hFlip:1;
+    u32 vFlip:1;
+};
+
+struct AnimLoopCmd
+{
+    u32 type:16;
+    u32 count:6;
+};
+
+struct AnimJumpCmd
+{
+    u32 type:16;
+    u32 target:6;
+};
+
+// The first halfword of this union specifies the type of command.
+// If it -2, then it is a jump command. If it is -1, then it is the end of the script.
+// Otherwise, it is the imageValue for a frame command.
+union AnimCmd
+{
+    s16 type;
+    struct AnimFrameCmd frame;
+    struct AnimLoopCmd loop;
+    struct AnimJumpCmd jump;
+};
+
+#define ANIMCMD_FRAME(...) \
+    {.frame = {__VA_ARGS__}}
+#define ANIMCMD_LOOP(_count) \
+    {.loop = {.type = -3, .count = _count}}
+#define ANIMCMD_JUMP(_target) \
+    {.jump = {.type = -2, .target = _target}}
+#define ANIMCMD_END \
+    {.type = -1}
+
+struct AffineAnimFrameCmd
+{
+    s16 xScale;
+    s16 yScale;
+    u8 rotation;
+    u8 duration;
+};
+
+struct AffineAnimLoopCmd
+{
+    s16 type;
+    s16 count;
+};
+
+struct AffineAnimJumpCmd
+{
+    s16 type;
+    u16 target;
+};
+
+struct AffineAnimEndCmdAlt
+{
+    s16 type;
+    u16 val;
+};
+
+union AffineAnimCmd
+{
+    s16 type;
+    struct AffineAnimFrameCmd frame;
+    struct AffineAnimLoopCmd loop;
+    struct AffineAnimJumpCmd jump;
+    struct AffineAnimEndCmdAlt end; // unused in code
+};
+
+#define AFFINEANIMCMDTYPE_LOOP 0x7FFD
+#define AFFINEANIMCMDTYPE_JUMP 0x7FFE
+#define AFFINEANIMCMDTYPE_END  0x7FFF
+
+#define AFFINEANIMCMD_FRAME(_xScale, _yScale, _rotation, _duration) \
+    {.frame = {.xScale = _xScale, .yScale = _yScale, .rotation = _rotation, .duration = _duration}}
+#define AFFINEANIMCMD_LOOP(_count) \
+    {.loop = {.type = AFFINEANIMCMDTYPE_LOOP, .count = _count}}
+#define AFFINEANIMCMD_JUMP(_target) \
+    {.jump = {.type = AFFINEANIMCMDTYPE_JUMP, .target = _target}}
+#define AFFINEANIMCMD_END \
+    {.type = AFFINEANIMCMDTYPE_END}
+#define AFFINEANIMCMD_END_ALT(_val) \
+    {.end = {.type = AFFINEANIMCMDTYPE_END, .val = _val}}
+
+struct AffineAnimState
+{
+    u8 animNum;
+    u8 animCmdIndex;
+    u8 delayCounter;
+    u8 loopCounter;
+    s16 xScale;
+    s16 yScale;
+    u16 rotation;
+};
+
+enum
+{
+    SUBSPRITES_OFF,
+    SUBSPRITES_ON,
+    SUBSPRITES_IGNORE_PRIORITY, // on but priority is ignored
+};
+
+struct Subsprite
+{
+    s8 x; // was u16 in R/S
+    s8 y; // was u16 in R/S
+    u16 shape:2;
+    u16 size:2;
+    u16 tileOffset:10;
+    u16 priority:2;
+};
+
+struct SubspriteTable
+{
+    u8 subspriteCount;
+    const struct Subsprite *subsprites;
+};
+
+struct Sprite;
+
+typedef void (*SpriteCallback)(struct Sprite *);
+
+struct SpriteTemplate
+{
+    u16 tileTag;
+    u16 paletteTag;
+    const struct OamData *oam;
+    const union AnimCmd *const *anims;
+    const struct SpriteFrameImage *images;
+    const union AffineAnimCmd *const *affineAnims;
+    SpriteCallback callback;
+};
+
+struct Sprite
+{
+    /*0x00*/ struct OamData oam;
+    /*0x08*/ const union AnimCmd *const *anims;
+    /*0x0C*/ const struct SpriteFrameImage *images;
+    /*0x10*/ const union AffineAnimCmd *const *affineAnims;
+    /*0x14*/ const struct SpriteTemplate *template;
+    /*0x18*/ const struct SubspriteTable *subspriteTables;
+    /*0x1C*/ SpriteCallback callback;
+
+    /*0x20*/ struct Coords16 pos1;
+    /*0x24*/ struct Coords16 pos2;
+    /*0x28*/ s8 centerToCornerVecX;
+    /*0x29*/ s8 centerToCornerVecY;
+
+    /*0x2A*/ u8 animNum;
+    /*0x2B*/ u8 animCmdIndex;
+    /*0x2C*/ u8 animDelayCounter:6;
+             bool8 animPaused:1;
+             bool8 affineAnimPaused:1;
+    /*0x2D*/ u8 animLoopCounter;
+
+    // general purpose data fields
+    /*0x2E*/ s16 data[8];
+
+    /*0x3E*/ bool16 inUse:1;               //1
+             bool16 coordOffsetEnabled:1;  //2
+             bool16 invisible:1;           //4
+             bool16 flags_3:1;             //8
+             bool16 flags_4:1;             //0x10
+             bool16 flags_5:1;             //0x20
+             bool16 flags_6:1;             //0x40
+             bool16 flags_7:1;             //0x80
+    /*0x3F*/ bool16 hFlip:1;               //1
+             bool16 vFlip:1;               //2
+             bool16 animBeginning:1;       //4
+             bool16 affineAnimBeginning:1; //8
+             bool16 animEnded:1;           //0x10
+             bool16 affineAnimEnded:1;     //0x20
+             bool16 usingSheet:1;          //0x40
+             bool16 flags_f:1;             //0x80
+
+    /*0x40*/ u16 sheetTileStart;
+
+    /*0x42*/ u8 subspriteTableNum:6;
+             u8 subspriteMode:2;
+
+    /*0x43*/ u8 subpriority;
+};
+
+struct OamMatrix
+{
+    s16 a;
+    s16 b;
+    s16 c;
+    s16 d;
+};
+
+extern const struct OamData gDummyOamData;
+extern const union AnimCmd *const gDummySpriteAnimTable[];
+extern const union AffineAnimCmd *const gDummySpriteAffineAnimTable[];
+extern const struct SpriteTemplate gDummySpriteTemplate;
+
+extern u8 gReservedSpritePaletteCount;
+extern struct Sprite gSprites[];
+extern u8 gOamLimit;
+extern u16 gReservedSpriteTileCount;
+extern s16 gSpriteCoordOffsetX;
+extern s16 gSpriteCoordOffsetY;
+extern struct OamMatrix gOamMatrices[];
+extern bool8 gAffineAnimsDisabled;
+
+void ResetSpriteData(void);
+void AnimateSprites(void);
+void BuildOamBuffer(void);
+u8 CreateSprite(const struct SpriteTemplate *template, s16 x, s16 y, u8 subpriority);
+u8 CreateSpriteAtEnd(const struct SpriteTemplate *template, s16 x, s16 y, u8 subpriority);
+u8 CreateInvisibleSprite(void (*callback)(struct Sprite *));
+u8 CreateSpriteAndAnimate(const struct SpriteTemplate *template, s16 x, s16 y, u8 subpriority);
+void DestroySprite(struct Sprite *sprite);
+void ResetOamRange(u8 a, u8 b);
+void LoadOam(void);
+void SetOamMatrix(u8 matrixNum, u16 a, u16 b, u16 c, u16 d);
+void CalcCenterToCornerVec(struct Sprite *sprite, u8 shape, u8 size, u8 affineMode);
+void SpriteCallbackDummy(struct Sprite *sprite);
+void ProcessSpriteCopyRequests(void);
+void RequestSpriteCopy(const u8 *src, u8 *dest, u16 size);
+void FreeSpriteTiles(struct Sprite *sprite);
+void FreeSpritePalette(struct Sprite *sprite);
+void FreeSpriteOamMatrix(struct Sprite *sprite);
+void DestroySpriteAndFreeResources(struct Sprite *sprite);
+void sub_800142C(u32 a1, u32 a2, u16 *a3, u16 a4, u32 a5);
+void AnimateSprite(struct Sprite *sprite);
+void sub_8007E18(struct Sprite* sprite, s16 a2, s16 a3);
+void StartSpriteAnim(struct Sprite *sprite, u8 animNum);
+void StartSpriteAnimIfDifferent(struct Sprite *sprite, u8 animNum);
+void SeekSpriteAnim(struct Sprite *sprite, u8 animCmdIndex);
+void StartSpriteAffineAnim(struct Sprite *sprite, u8 animNum);
+void StartSpriteAffineAnimIfDifferent(struct Sprite *sprite, u8 animNum);
+void ChangeSpriteAffineAnim(struct Sprite *sprite, u8 animNum);
+void ChangeSpriteAffineAnimIfDifferent(struct Sprite *sprite, u8 animNum);
+void SetSpriteSheetFrameTileNum(struct Sprite *sprite);
+u8 AllocOamMatrix(void);
+void FreeOamMatrix(u8 matrixNum);
+void InitSpriteAffineAnim(struct Sprite *sprite);
+void SetOamMatrixRotationScaling(u8 matrixNum, s16 xScale, s16 yScale, u16 rotation);
+u16 LoadSpriteSheet(const struct SpriteSheet *sheet);
+void LoadSpriteSheets(const struct SpriteSheet *sheets);
+u16 AllocTilesForSpriteSheet(struct SpriteSheet *sheet);
+void AllocTilesForSpriteSheets(struct SpriteSheet *sheets);
+void LoadTilesForSpriteSheet(const struct SpriteSheet *sheet);
+void LoadTilesForSpriteSheets(struct SpriteSheet *sheets);
+void FreeSpriteTilesByTag(u16 tag);
+void FreeSpriteTileRanges(void);
+u16 GetSpriteTileStartByTag(u16 tag);
+u16 GetSpriteTileTagByTileStart(u16 start);
+void RequestSpriteSheetCopy(const struct SpriteSheet *sheet);
+u16 LoadSpriteSheetDeferred(const struct SpriteSheet *sheet);
+void FreeAllSpritePalettes(void);
+u8 LoadSpritePalette(const struct SpritePalette *palette);
+void LoadSpritePalettes(const struct SpritePalette *palettes);
+u8 AllocSpritePalette(u16 tag);
+u8 IndexOfSpritePaletteTag(u16 tag);
+u16 GetSpritePaletteTagByPaletteNum(u8 paletteNum);
+void FreeSpritePaletteByTag(u16 tag);
+void SetSubspriteTables(struct Sprite *sprite, const struct SubspriteTable *subspriteTables);
+bool8 AddSpriteToOamBuffer(struct Sprite *object, u8 *oamIndex);
+bool8 AddSubspritesToOamBuffer(struct Sprite *sprite, struct OamData *destOam, u8 *oamIndex);
+void CopyToSprites(u8 *src);
+void CopyFromSprites(u8 *dest);
+u8 SpriteTileAllocBitmapOp(u16 bit, u8 op);
+void ClearSpriteCopyRequests(void);
+void ResetAffineAnimData(void);
+
+#endif //GUARD_SPRITE_H