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Shipwright/soh/src/overlays/actors/ovl_En_Jsjutan/z_en_jsjutan.c

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/*
* File: z_en_jsjutan.c
* Overlay: ovl_En_Jsjutan
* Description: Magic carpet man's carpet
*/
#include "z_en_jsjutan.h"
#include "overlays/actors/ovl_En_Bom/z_en_bom.h"
#define FLAGS (ACTOR_FLAG_0 | ACTOR_FLAG_3)
void EnJsjutan_Init(Actor* thisx, GlobalContext* globalCtx);
void EnJsjutan_Destroy(Actor* thisx, GlobalContext* globalCtx);
void EnJsjutan_Update(Actor* thisx, GlobalContext* globalCtx);
void EnJsjutan_Draw(Actor* thisx, GlobalContext* globalCtx);
const ActorInit En_Jsjutan_InitVars = {
ACTOR_EN_JSJUTAN,
ACTORCAT_NPC,
FLAGS,
OBJECT_GAMEPLAY_KEEP,
sizeof(EnJsjutan),
(ActorFunc)EnJsjutan_Init,
(ActorFunc)EnJsjutan_Destroy,
(ActorFunc)EnJsjutan_Update,
(ActorFunc)EnJsjutan_Draw,
NULL,
};
// Shadow texture. 32x64 I8.
static u8 sShadowTex[0x800];
static Vec3s D_80A8EE10[0x90];
static s32 sUnused[2] = { 0, 0 };
#include "overlays/ovl_En_Jsjutan/ovl_En_Jsjutan.h"
void EnJsjutan_Init(Actor* thisx, GlobalContext* globalCtx) {
EnJsjutan* this = (EnJsjutan*)thisx;
s32 pad;
CollisionHeader* header = NULL;
this->dyna.actor.flags &= ~ACTOR_FLAG_0;
DynaPolyActor_Init(&this->dyna, DPM_UNK);
CollisionHeader_GetVirtual(&sCol, &header);
this->dyna.bgId = DynaPoly_SetBgActor(globalCtx, &globalCtx->colCtx.dyna, thisx, header);
Actor_SetScale(thisx, 0.02f);
this->unk_164 = true;
this->shadowAlpha = 100.0f;
}
void EnJsjutan_Destroy(Actor* thisx, GlobalContext* globalCtx) {
EnJsjutan* this = (EnJsjutan*)thisx;
DynaPoly_DeleteBgActor(globalCtx, &globalCtx->colCtx.dyna, this->dyna.bgId);
}
void func_80A89860(EnJsjutan* this, GlobalContext* globalCtx) {
s16 i;
Vtx* oddVtx;
Vtx* evenVtx;
Vec3f actorPos = this->dyna.actor.world.pos;
oddVtx = ResourceMgr_LoadVtxByName(SEGMENTED_TO_VIRTUAL(gShadowOddVtx));
evenVtx = ResourceMgr_LoadVtxByName(SEGMENTED_TO_VIRTUAL(sShadowEvenVtx));
for (i = 0; i < ARRAY_COUNT(D_80A8EE10); i++, oddVtx++, evenVtx++) {
D_80A8EE10[i].x = oddVtx->v.ob[0];
D_80A8EE10[i].z = oddVtx->v.ob[2];
if (this->dyna.actor.params == ENJSJUTAN_TYPE_01) {
oddVtx->v.ob[1] = evenVtx->v.ob[1] = 0x585;
} else {
this->dyna.actor.world.pos.x = oddVtx->v.ob[0] * 0.02f + actorPos.x;
this->dyna.actor.world.pos.z = oddVtx->v.ob[2] * 0.02f + actorPos.z;
Actor_UpdateBgCheckInfo(globalCtx, &this->dyna.actor, 10.0f, 10.0f, 10.0f, 4);
oddVtx->v.ob[1] = evenVtx->v.ob[1] = this->dyna.actor.floorHeight;
this->dyna.actor.world.pos = actorPos;
}
}
}
void func_80A89A6C(EnJsjutan* this, GlobalContext* globalCtx) {
u8 isPlayerOnTop = false; // sp127
s16 i;
s16 j;
Vtx* carpetVtx;
Vtx* shadowVtx;
Vtx* phi_s0_2;
Vec3f sp108;
Vec3f spFC;
Actor* actorProfessor;
Actor* actorBeanGuy;
f32 dxVtx;
f32 dyVtx;
f32 dzVtx;
f32 distVtx;
// 0 if no actor in that index of diffToTracked
u8 spE0[3];
// Tracks distance to other actors.
// Index 0 is always the Magic Carpet Man. 1 and 2 could be bombs, or EnMk and EnMs if in credits.
f32 spD4[3]; // diffToTracked X
f32 spC8[3]; // diffToTracked Y
f32 spBC[3]; // diffToTracked Z
// Tracks distance to Link
f32 spB8; // diffToPlayer X
f32 spB4; // diffToPlayer Y
f32 spB0; // diffToPlayer Z
f32 weight;
f32 spA8; // wave amplitude (?)
f32 offset;
f32 maxOffset;
f32 maxAmp;
f32 waveform;
Player* player = GET_PLAYER(globalCtx);
Actor* parent = this->dyna.actor.parent;
Actor* actorExplosive = globalCtx->actorCtx.actorLists[ACTORCAT_EXPLOSIVE].head;
u8 isInCreditsScene = false; // sp8B
if (globalCtx->gameplayFrames % 2 != 0) {
carpetVtx = SEGMENTED_TO_VIRTUAL(sCarpetOddVtx);
shadowVtx = SEGMENTED_TO_VIRTUAL(gShadowOddVtx);
} else {
carpetVtx = SEGMENTED_TO_VIRTUAL(sCarpetEvenVtx);
shadowVtx = SEGMENTED_TO_VIRTUAL(sShadowEvenVtx);
}
carpetVtx = ResourceMgr_LoadVtxByName(carpetVtx);
shadowVtx = ResourceMgr_LoadVtxByName(shadowVtx);
// Distance of player to carpet.
spB8 = (player->actor.world.pos.x - this->dyna.actor.world.pos.x) * 50.0f;
spB4 = (player->actor.world.pos.y - this->unk_168) * 50.0f;
spB0 = (player->actor.world.pos.z - this->dyna.actor.world.pos.z) * 50.0f;
phi_s0_2 = carpetVtx;
if ((fabsf(spB8) < 5500.0f) && (fabsf(spB4) < 3000.0f) && (fabsf(spB0) < 5500.0f)) {
isPlayerOnTop = true;
}
// Distance of Magic Carpet Salesman to carpet.
spD4[0] = (parent->world.pos.x - this->dyna.actor.world.pos.x) * 50.0f;
spC8[0] = ((parent->world.pos.y - 8.0f) - this->unk_168) * 50.0f;
spBC[0] = (parent->world.pos.z - this->dyna.actor.world.pos.z) * 50.0f;
spE0[0] = 1;
for (i = 1; i < 3; i++) {
spE0[i] = 0;
}
i = 1;
// Credits scene. The magic carpet man is friends with the bean guy and the lakeside professor.
if ((gSaveContext.entranceIndex == 0x157) && (gSaveContext.sceneSetupIndex == 8)) {
isInCreditsScene = true;
actorProfessor = globalCtx->actorCtx.actorLists[ACTORCAT_NPC].head;
while (actorProfessor != NULL) {
if (actorProfessor->id == ACTOR_EN_MK) {
break;
}
actorProfessor = actorProfessor->next;
}
actorBeanGuy = globalCtx->actorCtx.actorLists[ACTORCAT_NPC].head;
while (actorBeanGuy != NULL) {
if (actorBeanGuy->id == ACTOR_EN_MS) {
break;
}
actorBeanGuy = actorBeanGuy->next;
}
spD4[1] = 50.0f * (actorProfessor->world.pos.x - this->dyna.actor.world.pos.x);
spC8[1] = 50.0f * (actorProfessor->world.pos.y - this->unk_168);
spBC[1] = 50.0f * (actorProfessor->world.pos.z - this->dyna.actor.world.pos.z);
spE0[1] = 1;
spD4[2] = 50.0f * (actorBeanGuy->world.pos.x - this->dyna.actor.world.pos.x);
spC8[2] = 50.0f * (actorBeanGuy->world.pos.y - this->unk_168);
spBC[2] = 50.0f * (actorBeanGuy->world.pos.z - this->dyna.actor.world.pos.z);
spE0[2] = 1;
} else {
// Player can place bombs in carpet and it will react to it.
while (actorExplosive != NULL) {
if (i < 3) {
spD4[i] = (actorExplosive->world.pos.x - this->dyna.actor.world.pos.x) * 50.0f;
spC8[i] = (actorExplosive->world.pos.y - this->unk_168) * 50.0f;
spBC[i] = (actorExplosive->world.pos.z - this->dyna.actor.world.pos.z) * 50.0f;
if ((fabsf(spD4[i]) < 5500.0f) && (fabsf(spC8[i]) < 3000.0f) && (fabsf(spBC[i]) < 5500.0f)) {
if (actorExplosive->params == BOMB_EXPLOSION) {
spE0[i] = 35; // Code never checks this, so it goes unused. Maybe it was planned to damage the
// carpet with explosions (?)
} else {
spE0[i] = 1;
}
}
i++;
}
actorExplosive = actorExplosive->next;
}
}
// Fancy math to make a woobly and reactive carpet.
for (i = 0; i < ARRAY_COUNT(D_80A8EE10); i++, carpetVtx++, shadowVtx++) {
if (isPlayerOnTop) {
// Linear distance from j-th wave to player, in XZ plane.
dxVtx = carpetVtx->n.ob[0] - spB8;
dzVtx = carpetVtx->n.ob[2] - spB0;
distVtx = sqrtf(SQ(dxVtx) + SQ(dzVtx));
// Distance percentage. 0.0f to 1.0f. 2500.0f is the max distance to an actor that this wave will consider.
weight = (2500.0f - distVtx) / 2500.0f;
if (weight < 0.0f) {
weight = 0.0f;
}
offset = (spB4 * weight) + ((this->unk_170 - (this->unk_170 * weight)) - 200.0f);
distVtx -= 1500.0f;
if (distVtx < 0.0f) {
distVtx = 0.0f;
}
spA8 = 100.0f * distVtx * 0.01f;
spA8 = CLAMP_MAX(spA8, 100.0f);
} else {
offset = this->unk_170 - 200.f;
spA8 = 100.0f;
}
for (j = 0; j < 3; j++) {
if (spE0[j] != 0) {
dxVtx = carpetVtx->n.ob[0] - spD4[j];
dzVtx = carpetVtx->n.ob[2] - spBC[j];
// Linear distance from j-th wave to whatever actor is there, in XZ plane.
distVtx = sqrtf(SQ(dxVtx) + SQ(dzVtx));
if ((j == 0) || isInCreditsScene) {
weight = (3000.0f - distVtx) / 3000.0f;
} else {
weight = (2000.0f - distVtx) / 2000.0f;
}
if (weight < 0.0f) {
weight = 0.0f;
}
// should be the following, but doesn't match that way.
// maxoffset = (spC8[i] * weight) + ((this->unk_170 - (this->unk_170 * weight)) - 200.0f);
maxOffset = (spC8[j] * weight);
maxOffset += ((this->unk_170 - (this->unk_170 * weight)) - 200.0f);
distVtx -= 1500.0f;
if (distVtx < 0.0f) {
distVtx = 0.0f;
}
maxAmp = 100.0f * distVtx * 0.01f;
maxAmp = CLAMP_MAX(maxAmp, 100.0f);
offset = CLAMP_MAX(offset, maxOffset);
spA8 = CLAMP_MAX(spA8, maxAmp);
}
}
/**
* See https://en.wikipedia.org/wiki/Sine_wave#General_form
* k: 10000
* x: j
* w: 4000
* t: gameplayFrames
* A: spA8
* D: phi_f28
*/
waveform = spA8 * Math_SinS(globalCtx->gameplayFrames * 4000 + i * 10000);
if (this->unk_174) {
s16 phi_v1_4 = offset + waveform;
s16 temp_a0_3 = (shadowVtx->n.ob[1] - this->unk_168) * 50.0f;
if (phi_v1_4 < temp_a0_3) {
phi_v1_4 = temp_a0_3;
}
carpetVtx->n.ob[1] = phi_v1_4;
} else {
carpetVtx->n.ob[1] = offset + waveform;
carpetVtx->n.ob[0] = D_80A8EE10[i].x + (s16)(waveform * 0.5f);
carpetVtx->n.ob[2] = D_80A8EE10[i].z + (s16)(waveform * 0.5f);
shadowVtx->n.ob[0] = D_80A8EE10[i].x + (s16)waveform;
shadowVtx->n.ob[2] = D_80A8EE10[i].z + (s16)waveform;
}
}
if (!this->unk_174) {
u16 dayTime;
this->dyna.actor.velocity.y = 0.0f;
this->dyna.actor.world.pos.y = this->unk_168;
dayTime = gSaveContext.dayTime;
if (dayTime >= 0x8000) {
dayTime = 0xFFFF - dayTime;
}
this->shadowAlpha = (dayTime * 0.00275f) + 10.0f; // (1.0f / 364.0f) ?
this->unk_170 = 1000.0f;
} else {
Math_ApproachF(&this->dyna.actor.world.pos.y, this->unk_168 - 1000.0f, 1.0f, this->dyna.actor.velocity.y);
Math_ApproachF(&this->dyna.actor.velocity.y, 5.0f, 1.0f, 0.5f);
Math_ApproachF(&this->shadowAlpha, 0.0f, 1.0f, 3.0f);
Math_ApproachF(&this->unk_170, -5000.0f, 1.0f, 100.0f);
}
carpetVtx = phi_s0_2;
sp108.x = 0.0f;
sp108.y = 0.0f;
sp108.z = 120.0f;
// Fancy math to smooth each part of the wave considering its neighborhood.
for (i = 0; i < ARRAY_COUNT(sCarpetOddVtx); i++, carpetVtx++) {
f32 rotX;
f32 rotZ;
s32 pad;
// Carpet size is 12x12.
if ((i % 12) == 11) { // Last column.
j = i - 1;
dzVtx = carpetVtx->n.ob[2] - phi_s0_2[j].n.ob[2];
} else {
j = i + 1;
dzVtx = phi_s0_2[j].n.ob[2] - carpetVtx->n.ob[2];
}
dyVtx = phi_s0_2[j].n.ob[1] - carpetVtx->n.ob[1];
rotX = Math_Atan2F(dzVtx, dyVtx);
if (i >= 132) { // Last row.
j = i - 12;
dxVtx = carpetVtx->n.ob[0] - phi_s0_2[j].n.ob[0];
} else {
j = i + 12;
dxVtx = phi_s0_2[j].n.ob[0] - carpetVtx->n.ob[0];
}
rotZ = Math_Atan2F(dxVtx, dyVtx);
Matrix_RotateX(rotX, MTXMODE_NEW);
Matrix_RotateZ(rotZ, MTXMODE_APPLY);
Matrix_MultVec3f(&sp108, &spFC);
carpetVtx->n.n[0] = spFC.x;
carpetVtx->n.n[1] = spFC.y;
carpetVtx->n.n[2] = spFC.z;
}
}
void EnJsjutan_Update(Actor* thisx, GlobalContext* globalCtx2) {
GlobalContext* globalCtx = globalCtx2;
thisx->shape.rot.x = Math_SinS(globalCtx->gameplayFrames * 3000) * 300.0f;
thisx->shape.rot.z = Math_CosS(globalCtx->gameplayFrames * 3500) * 300.0f;
}
void EnJsjutan_Draw(Actor* thisx, GlobalContext* globalCtx2) {
EnJsjutan* this = (EnJsjutan*)thisx;
GlobalContext* globalCtx = globalCtx2;
s16 i;
Actor* parent = thisx->parent;
OPEN_DISPS(globalCtx->state.gfxCtx);
if (thisx->params == ENJSJUTAN_TYPE_01) {
thisx->world.pos.x = parent->world.pos.x;
thisx->world.pos.y = parent->world.pos.y;
thisx->world.pos.z = parent->world.pos.z;
this->unk_168 = thisx->world.pos.y;
if (!this->unk_175) {
this->unk_175 = true;
func_80A89860(this, globalCtx);
}
} else if (!this->unk_175) {
this->unk_175 = true;
thisx->world.pos.x = Math_SinS(parent->shape.rot.y) * 60.0f + parent->world.pos.x;
thisx->world.pos.y = (parent->world.pos.y + 5.0f) - 10.0f;
thisx->world.pos.z = Math_CosS(parent->shape.rot.y) * 60.0f + parent->world.pos.z;
this->unk_168 = thisx->world.pos.y;
func_80A89860(this, globalCtx);
}
func_80A89A6C(this, globalCtx);
if (this->unk_164) {
this->unk_164 = false;
u8* carpTex = ResourceMgr_LoadTexByName(sCarpetTex);
u8* shadTex = sShadowTex;
for (i = 0; i < ARRAY_COUNT(sShadowTex); i++) {
if (((u16*)carpTex)[i] != 0) { // Hack to bypass ZAPD exporting textures as u64.
shadTex[i] = 0xFF;
} else {
shadTex[i] = 0;
}
}
}
func_80093D18(globalCtx->state.gfxCtx);
gDPSetPrimColor(POLY_OPA_DISP++, 0, 0, 0, 0, 0, (s16)this->shadowAlpha);
Matrix_Translate(thisx->world.pos.x, 3.0f, thisx->world.pos.z, MTXMODE_NEW);
Matrix_Scale(thisx->scale.x, 1.0f, thisx->scale.z, MTXMODE_APPLY);
gSPMatrix(POLY_OPA_DISP++, MATRIX_NEWMTX(globalCtx->state.gfxCtx),
G_MTX_NOPUSH | G_MTX_LOAD | G_MTX_MODELVIEW);
// Draws the carpet's shadow texture.
gSPSegment(POLY_OPA_DISP++, 0x0C, sShadowTex);
gSPDisplayList(POLY_OPA_DISP++, sShadowMaterialDL);
gDPPipeSync(POLY_OPA_DISP++);
// Draws the carpet's shadow vertices. Swaps them between frames to get a smoother result.
if (globalCtx->gameplayFrames % 2 != 0) {
gSPSegment(POLY_OPA_DISP++, 0x0C, gShadowOddVtx);
} else {
gSPSegment(POLY_OPA_DISP++, 0x0C, sShadowEvenVtx);
}
gSPDisplayList(POLY_OPA_DISP++, sModelDL);
func_80093D18(globalCtx->state.gfxCtx);
Matrix_Translate(thisx->world.pos.x, this->unk_168 + 3.0f, thisx->world.pos.z, MTXMODE_NEW);
Matrix_Scale(thisx->scale.x, thisx->scale.y, thisx->scale.z, MTXMODE_APPLY);
gSPMatrix(POLY_OPA_DISP++, MATRIX_NEWMTX(globalCtx->state.gfxCtx),
G_MTX_NOPUSH | G_MTX_LOAD | G_MTX_MODELVIEW);
// Draws the carpet's texture.
gSPDisplayList(POLY_OPA_DISP++, sCarpetMaterialDL);
gDPPipeSync(POLY_OPA_DISP++);
// Draws the carpet vertices.
if (globalCtx->gameplayFrames % 2 != 0) {
gSPSegment(POLY_OPA_DISP++, 0x0C, sCarpetOddVtx);
} else {
gSPSegment(POLY_OPA_DISP++, 0x0C, sCarpetEvenVtx);
}
gSPDisplayList(POLY_OPA_DISP++, sModelDL);
CLOSE_DISPS(globalCtx->state.gfxCtx);
}
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