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#ifndef SKIN_H
#define SKIN_H
#include "animation.h"
struct Actor;
struct GraphicsContext;
struct PlayState;
/**
* Holds a compact version of a vertex used in the Skin system
* It is used to initialise the Vtx used by an animated limb
*/
typedef struct SkinVertex {
/* 0x00 */ u16 index;
/* 0x02 */ s16 s; // s and t are texture coordinates (also known as u and v)
/* 0x04 */ s16 t;
/* 0x06 */ s8 normX;
/* 0x07 */ s8 normY;
/* 0x08 */ s8 normZ;
/* 0x09 */ u8 alpha;
} SkinVertex; // size = 0xA
/**
* Describes a position displacement and a scale to be applied to a limb at index `limbIndex`
*/
typedef struct SkinTransformation {
/* 0x00 */ u8 limbIndex;
/* 0x02 */ s16 x;
/* 0x04 */ s16 y;
/* 0x06 */ s16 z;
/* 0x08 */ u8 scale;
} SkinTransformation; // size = 0xA
typedef struct SkinLimbModif {
/* 0x00 */ u16 vtxCount; // number of vertices in this modif entry
/* 0x02 */ u16 transformCount;
/* 0x04 */ u16 unk_4; // index of limbTransformations?
/* 0x08 */ SkinVertex* skinVertices;
/* 0x0C */ SkinTransformation* limbTransformations;
} SkinLimbModif; // size = 0x10
typedef struct SkinAnimatedLimbData {
/* 0x00 */ u16 totalVtxCount; // total vertex count for all modif entries
/* 0x02 */ u16 limbModifCount;
/* 0x04 */ SkinLimbModif* limbModifications;
/* 0x08 */ Gfx* dlist;
} SkinAnimatedLimbData; // size = 0xC
#define SKIN_LIMB_TYPE_ANIMATED 4
#define SKIN_LIMB_TYPE_NORMAL 11
typedef struct SkinLimb {
/* 0x00 */ Vec3s jointPos; // Root is position in model space, children are relative to parent
/* 0x06 */ u8 child;
/* 0x07 */ u8 sibling;
/* 0x08 */ s32 segmentType; // Type of data contained in segment
/* 0x0C */ void* segment; // Gfx* if segmentType is SKIN_LIMB_TYPE_NORMAL, SkinAnimatedLimbData* if segmentType is SKIN_LIMB_TYPE_ANIMATED, NULL otherwise
} SkinLimb; // size = 0x10
typedef struct SkinLimbVtx {
/* 0x000 */ u8 index; // alternates every draw cycle
/* 0x004 */ Vtx* buf[2]; // number of vertices in buffer determined by `totalVtxCount`
} SkinLimbVtx; // size = 0xC
typedef struct Skin {
/* 0x000 */ SkeletonHeader* skeletonHeader;
/* 0x004 */ MtxF mtx;
/* 0x044 */ s32 limbCount;
/* 0x048 */ SkinLimbVtx* vtxTable; // double buffered list of vertices for each limb
/* 0x04C */ SkelAnime skelAnime;
} Skin; // size = 0x90
typedef void (*SkinPostDraw)(struct Actor*, struct PlayState*, Skin*);
typedef s32 (*SkinOverrideLimbDraw)(struct Actor*, struct PlayState*, s32, Skin*);
#define SKIN_DRAW_FLAG_CUSTOM_TRANSFORMS (1 << 0)
#define SKIN_DRAW_FLAG_CUSTOM_MATRIX (1 << 1)
#define SKIN_TRANSFORM_IS_FHG 0x23
void Skin_UpdateVertices(MtxF* mtx, SkinVertex* skinVertices, SkinLimbModif* modifEntry, Vtx* vtxBuf, Vec3f* pos);
void Skin_DrawAnimatedLimb(struct GraphicsContext* gfxCtx, Skin* skin, s32 limbIndex, s32 arg3, s32 drawFlags);
void Skin_DrawLimb(struct GraphicsContext* gfxCtx, Skin* skin, s32 limbIndex, Gfx* dlistOverride, s32 drawFlags);
void func_800A6330(struct Actor* actor, struct PlayState* play, Skin* skin, SkinPostDraw postDraw, s32 setTranslation);
void func_800A6360(struct Actor* actor, struct PlayState* play, Skin* skin, SkinPostDraw postDraw,
SkinOverrideLimbDraw overrideLimbDraw, s32 setTranslation);
void func_800A6394(struct Actor* actor, struct PlayState* play, Skin* skin, SkinPostDraw postDraw,
SkinOverrideLimbDraw overrideLimbDraw, s32 setTranslation, s32 arg6);
void func_800A63CC(struct Actor* actor, struct PlayState* play, Skin* skin, SkinPostDraw postDraw,
SkinOverrideLimbDraw overrideLimbDraw, s32 setTranslation, s32 arg6, s32 drawFlags);
void Skin_GetLimbPos(Skin* skin, s32 limbIndex, Vec3f* offset, Vec3f* dst);
void Skin_Init(struct PlayState* play, Skin* skin, SkeletonHeader* skeletonHeader, AnimationHeader* animationHeader);
void Skin_Free(struct PlayState* play, Skin* skin);
s32 Skin_ApplyAnimTransformations(Skin* skin, MtxF* limbMatrices, struct Actor* actor, s32 setTranslation);
#endif
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