oot/include/z64effect.h

#ifndef Z64EFFECT_H
#define Z64EFFECT_H

#include "color.h"

struct GraphicsContext;
struct PlayState;

/* Effects */

#define SPARK_COUNT 3
#define BLURE_COUNT 25
#define SHIELD_PARTICLE_COUNT 3

#define TOTAL_EFFECT_COUNT SPARK_COUNT + BLURE_COUNT + SHIELD_PARTICLE_COUNT

typedef struct {
    /* 0x00 */ u8 active;
    /* 0x01 */ u8 unk_01;
    /* 0x02 */ u8 unk_02;
} EffectStatus; // size = 0x03

typedef struct {
    /* 0x00 */ Vec3f velocity;
    /* 0x0C */ Vec3f position;
    /* 0x18 */ Vec3s unkVelocity;
    /* 0x1E */ Vec3s unkPosition;
} EffectSparkElement; // size = 0x24

typedef struct {
    /* 0x000 */ Vec3s position;
    /* 0x008 */ s32 numElements; // "table_size"; calculated as uDiv * vDiv + 2
    /* 0x00C */ EffectSparkElement elements[32];
    /* 0x48C */ f32 speed;
    /* 0x490 */ f32 gravity;
    /* 0x494 */ u32 uDiv; // "u_div"
    /* 0x498 */ u32 vDiv; // "v_div"
    /* 0x49C */ Color_RGBA8 colorStart[4];
    /* 0x4AC */ Color_RGBA8 colorEnd[4];
    /* 0x4BC */ s32 timer;
    /* 0x4C0 */ s32 duration;
} EffectSparkInit; // size = 0x4C4

typedef struct {
    /* 0x000 */ Vec3s position;
    /* 0x008 */ s32 numElements; // "table_size"; calculated as uDiv * vDiv + 2
    /* 0x00C */ EffectSparkElement elements[32];
    /* 0x48C */ f32 speed;
    /* 0x490 */ f32 gravity;
    /* 0x494 */ u32 uDiv; // "u_div"
    /* 0x498 */ u32 vDiv; // "v_div"
    /* 0x49C */ Color_RGBA8 colorStart[4];
    /* 0x4AC */ Color_RGBA8 colorEnd[4];
    /* 0x4BC */ s32 timer;
    /* 0x4C0 */ s32 duration;
} EffectSpark; // size = 0x4C4

typedef struct {
    /* 0x00 */ s32 state;
    /* 0x04 */ s32 timer;
    /* 0x08 */ Vec3s p1;
    /* 0x0E */ Vec3s p2;
    /* 0x14 */ u16 flags;
} EffectBlureElement; // size = 0x18

typedef struct {
    /* 0x000 */ char unk_00[0x184];
    /* 0x184 */ u8 p1StartColor[4];
    /* 0x188 */ u8 p2StartColor[4];
    /* 0x18C */ u8 p1EndColor[4];
    /* 0x190 */ u8 p2EndColor[4];
    /* 0x194 */ s32 elemDuration;
    /* 0x198 */ s32 unkFlag;
    /* 0x19C */ s32 calcMode;
} EffectBlureInit1; // size = 0x1A0

typedef struct {
    /* 0x00 */ s32 calcMode;
    /* 0x04 */ u16 flags;
    /* 0x06 */ s16 addAngleChange;
    /* 0x08 */ u8 p1StartColor[4];
    /* 0x0C */ u8 p2StartColor[4];
    /* 0x10 */ u8 p1EndColor[4];
    /* 0x14 */ u8 p2EndColor[4];
    /* 0x18 */ u8 elemDuration;
    /* 0x19 */ u8 unkFlag;
    /* 0x1A */ u8 drawMode; // 0: simple; 1: simple with alt colors; 2+: smooth
    /* 0x1B */ u8 mode4Param;
    /* 0x1C */ Color_RGBA8 altPrimColor; // used with drawMode 1
    /* 0x20 */ Color_RGBA8 altEnvColor; // used with drawMode 1
} EffectBlureInit2; // size = 0x24

typedef struct {
    /* 0x000 */ EffectBlureElement elements[16];
    /* 0x180 */ s32 calcMode;
    /* 0x184 */ f32 mode4Param;
    /* 0x188 */ u16 flags;
    /* 0x18A */ s16 addAngleChange;
    /* 0x18C */ s16 addAngle;
    /* 0x18E */ u8 p1StartColor[4];
    /* 0x192 */ u8 p2StartColor[4];
    /* 0x196 */ u8 p1EndColor[4];
    /* 0x19A */ u8 p2EndColor[4];
    /* 0x19E */ u8 numElements; // "now_edge_num"
    /* 0x19F */ u8 elemDuration;
    /* 0x1A0 */ u8 unkFlag;
    /* 0x1A1 */ u8 drawMode; // 0: simple; 1: simple with alt colors; 2+: smooth
    /* 0x1A2 */ Color_RGBA8 altPrimColor; // used with drawMode 1
    /* 0x1A6 */ Color_RGBA8 altEnvColor; // used with drawMode 1
} EffectBlure; // size = 0x1AC

typedef struct {
    /* 0x00 */ f32 initialSpeed;
    /* 0x04 */ f32 endXChange;
    /* 0x08 */ f32 endX;
    /* 0x0C */ f32 startXChange;
    /* 0x10 */ f32 startX;
    /* 0x14 */ s16 yaw;
    /* 0x16 */ s16 pitch;
} EffectShieldParticleElement; // size = 0x18

typedef struct {
    /* 0x00 */ u8 numElements;
    /* 0x02 */ Vec3s position;
    /* 0x08 */ Color_RGBA8 primColorStart;
    /* 0x0C */ Color_RGBA8 envColorStart;
    /* 0x10 */ Color_RGBA8 primColorMid;
    /* 0x14 */ Color_RGBA8 envColorMid;
    /* 0x18 */ Color_RGBA8 primColorEnd;
    /* 0x1C */ Color_RGBA8 envColorEnd;
    /* 0x20 */ f32 deceleration;
    /* 0x24 */ f32 maxInitialSpeed;
    /* 0x28 */ f32 lengthCutoff;
    /* 0x2C */ u8 duration;
    /* 0x2E */ LightPoint lightPoint;
    /* 0x3C */ s32 lightDecay; // halves light radius every frame when set to 1
} EffectShieldParticleInit; // size = 0x40

typedef struct {
    /* 0x000 */ EffectShieldParticleElement elements[16];
    /* 0x180 */ u8 numElements;
    /* 0x182 */ Vec3s position;
    /* 0x188 */ Color_RGBA8 primColorStart;
    /* 0x18C */ Color_RGBA8 envColorStart;
    /* 0x190 */ Color_RGBA8 primColorMid;
    /* 0x194 */ Color_RGBA8 envColorMid;
    /* 0x198 */ Color_RGBA8 primColorEnd;
    /* 0x19C */ Color_RGBA8 envColorEnd;
    /* 0x1A0 */ f32 deceleration;
    /* 0x1A4 */ char unk_1A4[0x04];
    /* 0x1A8 */ f32 maxInitialSpeed;
    /* 0x1AC */ f32 lengthCutoff;
    /* 0x1B0 */ u8 duration;
    /* 0x1B1 */ u8 timer;
    /* 0x1B2 */ LightInfo lightInfo;
    /* 0x1C0 */ LightNode* lightNode;
    /* 0x1C4 */ s32 lightDecay; // halves light radius every frame when set to 1
} EffectShieldParticle; // size = 0x1C8

typedef struct {
    /* 0x0000 */ struct PlayState* play;
    struct {
        EffectStatus status;
        EffectSpark effect;
    } /* 0x0004 */ sparks[SPARK_COUNT];
    struct {
        EffectStatus status;
        EffectBlure effect;
    } /* 0x0E5C */ blures[BLURE_COUNT];
    struct {
        EffectStatus status;
        EffectShieldParticle effect;
    } /* 0x388C */ shieldParticles[SHIELD_PARTICLE_COUNT];
} EffectContext; // size = 0x3DF0

typedef struct {
    /* 0x00 */ u32 size;
    /* 0x04 */ void (*init)(void* effect, void* initParams);
    /* 0x08 */ void (*destroy)(void* effect);
    /* 0x0C */ s32 (*update)(void* effect);
    /* 0x10 */ void (*draw)(void* effect, struct GraphicsContext* gfxCtx);
} EffectInfo; // size = 0x14

typedef enum {
    /* 0x00 */ EFFECT_SPARK,
    /* 0x01 */ EFFECT_BLURE1,
    /* 0x02 */ EFFECT_BLURE2,
    /* 0x03 */ EFFECT_SHIELD_PARTICLE
} EffectType;

/* Effect Soft Sprites */

struct EffectSs;

typedef u32 (*EffectSsInitFunc)(struct PlayState* play, u32 index, struct EffectSs* effectSs, void* initParams);
typedef void (*EffectSsUpdateFunc)(struct PlayState* play, u32 index, struct EffectSs* effectSs);
typedef void (*EffectSsDrawFunc)(struct PlayState* play, u32 index, struct EffectSs* effectSs);

typedef struct {
    /* 0x00 */ u32 type;
    /* 0x04 */ EffectSsInitFunc init;
} EffectSsInit; // size = 0x08

typedef struct {
    /* 0x00 */ uintptr_t vromStart;
    /* 0x04 */ uintptr_t vromEnd;
    /* 0x08 */ void* vramStart;
    /* 0x0C */ void* vramEnd;
    /* 0x10 */ void* loadedRamAddr;
    /* 0x14 */ EffectSsInit* initInfo;
    /* 0x18 */ u8 unk_18;
} EffectSsOverlay; // size = 0x1C

typedef struct EffectSs {
    /* 0x00 */ Vec3f pos;
    /* 0x0C */ Vec3f velocity;
    /* 0x18 */ Vec3f accel;
    /* 0x24 */ EffectSsUpdateFunc update;
    /* 0x28 */ EffectSsDrawFunc draw;
    /* 0x2C */ Vec3f vec; // usage specific per effect
    /* 0x38 */ void* gfx; // mostly used for display lists, sometimes textures
    /* 0x3C */ Actor* actor; // interfacing actor, usually the actor that spawned the effect
    /* 0x40 */ s16 regs[13]; // specific per effect
    /* 0x5A */ u16 flags;
    /* 0x5C */ s16 life; // -1 means this entry is free
    /* 0x5E */ u8 priority; // Lower value means higher priority
    /* 0x5F */ u8 type;
} EffectSs; // size = 0x60

typedef struct {
    /* 0x00 */ EffectSs* table; // "data_table"
    /* 0x04 */ s32 searchStartIndex;
    /* 0x08 */ s32 tableSize;
} EffectSsInfo; // size = 0x0C

/* G Effect Regs */

#define rgTexIdx regs[0]
#define rgScale regs[1]
#define rgTexIdxStep regs[2]
#define rgPrimColorR regs[3]
#define rgPrimColorG regs[4]
#define rgPrimColorB regs[5]
#define rgPrimColorA regs[6]
#define rgEnvColorR regs[7]
#define rgEnvColorG regs[8]
#define rgEnvColorB regs[9]
#define rgEnvColorA regs[10]
#define rgObjectSlot regs[11]

#define DEFINE_EFFECT_SS(_0, enum) enum,
#define DEFINE_EFFECT_SS_UNSET(enum) enum,

typedef enum {
    #include "tables/effect_ss_table.h"
    /* 0x25 */ EFFECT_SS_TYPE_MAX // originally "EFFECT_SS2_TYPE_LAST_LABEL"
} EffectSsType;

#undef DEFINE_EFFECT_SS
#undef DEFINE_EFFECT_SS_UNSET

#endif