mirror of
https://github.com/zeldaret/ph
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SammygoodTunes
97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
#pragma once
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#include "global.h"
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#include "types.h"
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// Q20.12 fixed point number
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typedef s32 q20;
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// Q4.12 fixed point number
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typedef s16 q4;
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#define INT_TO_Q20(n) ((s32) ((n) << 12))
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#define FLOAT_TO_Q21(n) ((s32) (((n) * 8192 + 1) / 4))
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#define FLOAT_TO_Q20(n) ((s32) (((n) * 8192 + 1) / 2))
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#define FLOAT_TO_Q19(n) ((s32) (((n) * 8192 + 1)))
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#define ROUND_Q20(n) (((s32) (n) + 0x800) >> 12)
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#define MUL_Q20(a, b) (q20)((((s64) (a)) * ((s64) (b)) + 0x800) >> 12)
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#define DEG_TO_ANG(n) ((n) * 0x10000 / 360)
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#define SIN(n) (gSinCosTable[2 * ((n) >> 4)])
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#define COS(n) (gSinCosTable[2 * ((n) >> 4) + 1])
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extern "C" s32 Atan2(s32 x, s32 y);
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extern q4 gSinCosTable[];
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typedef struct {
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/* 0 */ s8 x;
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/* 1 */ s8 y;
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/* 2 */
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} Vec2b;
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typedef struct {
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/* 0 */ s16 x;
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/* 1 */ s16 y;
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/* 2 */
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} Vec2s;
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typedef struct {
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/* 0 */ q20 x;
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/* 4 */ q20 y;
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/* 8 */ q20 z;
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/* c */
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} Vec3p;
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extern const Vec3p gVec3p_ZERO;
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extern "C" void Vec3p_Add(Vec3p *a, Vec3p *b, Vec3p *out);
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extern "C" void Vec3p_Sub(Vec3p *a, Vec3p *b, Vec3p *out);
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extern "C" q20 Vec3p_Dot(Vec3p *a, Vec3p *b);
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extern "C" void Vec3p_Cross(Vec3p *a, Vec3p *b, Vec3p *out);
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extern "C" q20 Vec3p_Length(Vec3p *a);
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extern "C" void Vec3p_Normalize(Vec3p *vec, Vec3p *out);
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extern "C" void Vec3p_Axpy(q20 a, Vec3p *x, Vec3p *y, Vec3p *out);
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extern "C" q20 Vec3p_Distance(Vec3p *a, Vec3p *b);
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extern "C" void Vec3p_Scale(Vec3p *vec, q20 scale);
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inline void Vec3p_Rotate(Vec3p *vec, q20 sin, q20 cos, Vec3p *out) {
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out->x += MUL_Q20(vec->z, sin);
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out->z += MUL_Q20(vec->z, cos);
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out->x += MUL_Q20(vec->x, cos);
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out->z += MUL_Q20(vec->x, -sin);
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}
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inline void Vec3p_CopyXZ(Vec3p *vec, Vec3p *out) {
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q20 z = vec->z;
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q20 x = vec->x;
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out->x = x;
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out->y = 0;
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out->z = z;
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}
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inline void Vec3p_Copy(Vec3p *vec, Vec3p *out) {
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out->x = vec->x;
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out->y = vec->y;
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out->z = vec->z;
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}
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typedef struct {
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/* 00 */ q20 x;
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/* 04 */ q20 y;
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/* 08 */ q20 z;
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/* 0c */ q20 w;
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/* 10 */
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} Vec4p;
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typedef struct {
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/* 00 */ Vec3p xColumn;
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/* 0c */ Vec3p yColumn;
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/* 18 */ Vec3p zColumn;
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/* 24 */
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} Mat3p;
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extern "C" u32 FastDivide(u32 a, u32 b);
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extern "C" u32 Divide(u32 a, u32 b);
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extern "C" bool Approach(unk32 *src, unk32 dest, unk32 step);
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extern "C" bool Approach_thunk(unk32 *src, unk32 dest, unk32 step);
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