ovl_Obj_Danpeilift decompiled and documented (#973)

* `ovl_Obj_Danpeilift` decompiled

* Rename functions

* Change arg1 to index

* Improve ObjDanpeilift_Move match

* Upcast macro

2 files changed, 189 insertions, 30 deletions

diff --git a/src/overlays/actors/ovl_Obj_Danpeilift/z_obj_danpeilift.c b/src/overlays/actors/ovl_Obj_Danpeilift/z_obj_danpeilift.c
index fb395f8d0..be3f365e3 100644
--- a/src/overlays/actors/ovl_Obj_Danpeilift/z_obj_danpeilift.c
+++ b/src/overlays/actors/ovl_Obj_Danpeilift/z_obj_danpeilift.c
@@ -15,7 +15,12 @@ void ObjDanpeilift_Destroy(Actor* thisx, PlayState* play);
 void ObjDanpeilift_Update(Actor* thisx, PlayState* play);
 void ObjDanpeilift_Draw(Actor* thisx, PlayState* play);
 
-#if 0
+void ObjDanpeilift_UpdatePosition(ObjDanpeilift* this, s32 index);
+void ObjDanpeilift_DoNothing(ObjDanpeilift* this, PlayState* play);
+void ObjDanpeilift_Move(ObjDanpeilift* this, PlayState* play);
+void ObjDanpeilift_Teleport(ObjDanpeilift* this, PlayState* play);
+void ObjDanpeilift_Wait(ObjDanpeilift* this, PlayState* play);
+
 const ActorInit Obj_Danpeilift_InitVars = {
     ACTOR_OBJ_DANPEILIFT,
     ACTORCAT_BG,
@@ -28,35 +33,171 @@ const ActorInit Obj_Danpeilift_InitVars = {
     (ActorFunc)ObjDanpeilift_Draw,
 };
 
-// static InitChainEntry sInitChain[] = {
-static InitChainEntry D_80C1B540[] = {
+static InitChainEntry sInitChain[] = {
     ICHAIN_F32(uncullZoneForward, 4000, ICHAIN_CONTINUE),
     ICHAIN_F32(uncullZoneScale, 200, ICHAIN_CONTINUE),
     ICHAIN_F32(uncullZoneDownward, 400, ICHAIN_CONTINUE),
     ICHAIN_VEC3F_DIV1000(scale, 100, ICHAIN_STOP),
 };
 
-#endif
-
-extern InitChainEntry D_80C1B540[];
-
-extern UNK_TYPE D_06000180;
-extern UNK_TYPE D_06000BA0;
-
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_Obj_Danpeilift/func_80C1ADC0.s")
-
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_Obj_Danpeilift/ObjDanpeilift_Init.s")
-
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_Obj_Danpeilift/ObjDanpeilift_Destroy.s")
-
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_Obj_Danpeilift/func_80C1AF84.s")
-
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_Obj_Danpeilift/func_80C1AF94.s")
-
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_Obj_Danpeilift/func_80C1B210.s")
-
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_Obj_Danpeilift/func_80C1B26C.s")
-
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_Obj_Danpeilift/ObjDanpeilift_Update.s")
-
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/ovl_Obj_Danpeilift/ObjDanpeilift_Draw.s")
+void ObjDanpeilift_UpdatePosition(ObjDanpeilift* this, s32 index) {
+    Math_Vec3s_ToVec3f(&this->dyna.actor.world.pos, &this->points[index]);
+}
+
+void ObjDanpeilift_Init(Actor* thisx, PlayState* play) {
+    Path* path;
+    ObjDanpeiliftActionFunc tempActionFunc;
+    ObjDanpeilift* this = THIS;
+
+    Actor_ProcessInitChain(&this->dyna.actor, sInitChain);
+    this->dyna.actor.shape.rot.x = 0;
+    this->dyna.actor.world.rot.x = 0;
+    this->dyna.actor.shape.rot.z = 0;
+    this->dyna.actor.world.rot.z = 0;
+    DynaPolyActor_Init(&this->dyna, 1);
+    DynaPolyActor_LoadMesh(play, &this->dyna, &object_obj_danpeilift_Colheader_000BA0);
+    if (this->dyna.bgId == BG_ACTOR_MAX) {
+        Actor_MarkForDeath(&this->dyna.actor);
+    } else {
+        this->speed = OBJDANPEILIFT_GET_SPEED(thisx);
+        if (this->speed < 0.0f) {
+            this->speed = -this->speed;
+        }
+        if (this->speed < 0.01f) {
+            this->actionFunc = ObjDanpeilift_DoNothing;
+        } else {
+            path = &play->setupPathList[OBJDANPEILIFT_GET_PATH(thisx)];
+            this->curPoint = OBJDANPEILIFT_GET_STARTING_POINT(thisx);
+            this->endPoint = path->count - 1;
+            this->direction = 1;
+            this->points = Lib_SegmentedToVirtual(path->points);
+            ObjDanpeilift_UpdatePosition(this, this->curPoint);
+            this->actionFunc = ObjDanpeilift_Move;
+        }
+    }
+}
+
+void ObjDanpeilift_Destroy(Actor* thisx, PlayState* play) {
+    ObjDanpeilift* this = THIS;
+    DynaPoly_DeleteBgActor(play, &play->colCtx.dyna, this->dyna.bgId);
+}
+
+void ObjDanpeilift_DoNothing(ObjDanpeilift* this, PlayState* play) {
+}
+
+void ObjDanpeilift_Move(ObjDanpeilift* this, PlayState* play) {
+    Actor* thisx = &this->dyna.actor;
+    Vec3f nextPoint;
+    f32 speed;
+    f32 target;
+    f32 step;
+    s32 isTeleporting;
+    s32 isPosUpdated;
+    Vec3s* endPoint;
+
+    Math_Vec3s_ToVec3f(&nextPoint, this->points + this->curPoint + this->direction);
+    Math_Vec3f_Diff(&nextPoint, &thisx->world.pos, &thisx->velocity);
+    speed = Math3D_Vec3fMagnitude(&thisx->velocity);
+    if ((speed < (this->speed * 8.0f)) && (this->speed > 2.0f)) {
+        target = ((this->speed - 2.0f) * 0.1f) + 2.0f;
+        step = this->speed * 0.03f;
+    } else {
+        target = this->speed;
+        step = this->speed * 0.16f;
+    }
+
+    Math_StepToF(&thisx->speedXZ, target, step);
+    if ((thisx->speedXZ + 0.05f) < speed) {
+        Math_Vec3f_Scale(&thisx->velocity, thisx->speedXZ / speed);
+        thisx->world.pos.x += thisx->velocity.x;
+        thisx->world.pos.y += thisx->velocity.y;
+        thisx->world.pos.z += thisx->velocity.z;
+    } else {
+        this->curPoint += this->direction;
+        thisx->speedXZ *= 0.4f;
+        isTeleporting = OBJDANPEILIFT_SHOULD_TELEPORT(thisx);
+        isPosUpdated = true;
+        if (((this->curPoint >= this->endPoint) && (this->direction > 0)) ||
+            ((this->curPoint <= 0) && (this->direction < 0))) {
+            if (!isTeleporting) {
+                this->direction = -this->direction;
+                this->waitTimer = 10;
+                this->actionFunc = ObjDanpeilift_Wait;
+            } else {
+                endPoint = &this->points[this->endPoint];
+                this->curPoint = this->direction > 0 ? 0 : this->endPoint;
+                if ((this->points[0].x != endPoint->x) || (this->points[0].y != endPoint->y) ||
+                    (this->points[0].z != endPoint->z)) {
+                    this->actionFunc = ObjDanpeilift_Teleport;
+                    func_800C62BC(play, &play->colCtx.dyna, this->dyna.bgId);
+                    isPosUpdated = false;
+                }
+            }
+        }
+
+        if (isPosUpdated) {
+            ObjDanpeilift_UpdatePosition(this, this->curPoint);
+        }
+    }
+}
+
+void ObjDanpeilift_Teleport(ObjDanpeilift* this, PlayState* play) {
+    if (!DynaPolyActor_IsInRidingMovingState(&this->dyna)) {
+        ObjDanpeilift_UpdatePosition(this, this->curPoint);
+        func_800C6314(play, &play->colCtx.dyna, this->dyna.bgId);
+        this->actionFunc = ObjDanpeilift_Move;
+    }
+}
+
+void ObjDanpeilift_Wait(ObjDanpeilift* this, PlayState* play) {
+    this->waitTimer--;
+    if (this->waitTimer <= 0) {
+        this->actionFunc = ObjDanpeilift_Move;
+        this->dyna.actor.speedXZ = 0.0f;
+    }
+}
+
+void ObjDanpeilift_Update(Actor* thisx, PlayState* play) {
+    f32 step;
+    ObjDanpeilift* this = THIS;
+
+    this->actionFunc(this, play);
+    Actor_SetFocus(&this->dyna.actor, 10.0f);
+    if (this->cutsceneTimer > 0) {
+        this->cutsceneTimer--;
+        if (this->cutsceneTimer == 0) {
+            ActorCutscene_Stop(this->dyna.actor.cutscene);
+        }
+    }
+    if (OBJDANPEILIFT_SHOULD_REACT_TO_WEIGHT(thisx)) {
+        f32 target;
+
+        this->isWeightOnPrev = this->isWeightOn;
+        this->isWeightOn = DynaPolyActor_IsInRidingMovingState(&this->dyna) ? 1 : 0;
+        if ((this->isWeightOn != this->isWeightOnPrev) && (this->maxHeight < 1.0f)) {
+            this->cycle = -0x8000;
+            this->maxHeight = 6.0f;
+        }
+        this->cycle += 0xCE4;
+        Math_StepToF(&this->maxHeight, 0.0f, 0.12f);
+        step = this->isWeightOn ? Math_CosS(fabsf(this->cycleSpeed) * 2048.0f) + 0.02f
+                                : Math_SinS(fabsf(this->cycleSpeed) * 2048.0f) + 0.02f;
+        target = this->isWeightOn ? -8.0f : 0.0f;
+        Math_StepToF(&this->cycleSpeed, target, step);
+        this->dyna.actor.shape.yOffset = ((Math_SinS(this->cycle) * this->maxHeight) + this->cycleSpeed) * 10.0f;
+    }
+    if ((OBJDANPEILIFT_GET_TYPE(thisx) == 1) && (this->dyna.actor.child != NULL)) {
+        if (this->dyna.actor.child->update == NULL) {
+            this->dyna.actor.child = NULL;
+        } else {
+            this->dyna.actor.child->world.pos.x = this->dyna.actor.world.pos.x;
+            this->dyna.actor.child->world.pos.y =
+                this->dyna.actor.world.pos.y + (this->dyna.actor.shape.yOffset * this->dyna.actor.scale.y);
+            this->dyna.actor.child->world.pos.z = this->dyna.actor.world.pos.z;
+        }
+    }
+}
+
+void ObjDanpeilift_Draw(Actor* thisx, PlayState* play) {
+    Gfx_DrawDListOpa(play, object_obj_danpeilift_DL_000180);
+}
diff --git a/src/overlays/actors/ovl_Obj_Danpeilift/z_obj_danpeilift.h b/src/overlays/actors/ovl_Obj_Danpeilift/z_obj_danpeilift.h
index 8b915a184..31f6b90c4 100644
--- a/src/overlays/actors/ovl_Obj_Danpeilift/z_obj_danpeilift.h
+++ b/src/overlays/actors/ovl_Obj_Danpeilift/z_obj_danpeilift.h
@@ -2,16 +2,34 @@
 #define Z_OBJ_DANPEILIFT_H
 
 #include "global.h"
+#include "objects/object_obj_danpeilift/object_obj_danpeilift.h"
 
 struct ObjDanpeilift;
 
 typedef void (*ObjDanpeiliftActionFunc)(struct ObjDanpeilift*, PlayState*);
 
+#define OBJDANPEILIFT_GET_TYPE(thisx) (((thisx)->params >> 0xF) & 1)
+#define OBJDANPEILIFT_GET_STARTING_POINT(thisx) (((thisx)->params >> 7) & 0x1F)
+#define OBJDANPEILIFT_GET_PATH(thisx) ((thisx)->params & 0x7F)
+#define OBJDANPEILIFT_SHOULD_TELEPORT(thisx) (((thisx)->params >> 0xC) & 1)
+#define OBJDANPEILIFT_GET_SPEED(thisx) ((thisx)->home.rot.z * 0.1f)
+#define OBJDANPEILIFT_SHOULD_REACT_TO_WEIGHT(thisx) (((thisx)->params >> 0xE) & 1)
+
 typedef struct ObjDanpeilift {
-    /* 0x000 */ Actor actor;
-    /* 0x144 */ char unk_144[0x18];
+    /* 0x000 */ DynaPolyActor dyna;
     /* 0x15C */ ObjDanpeiliftActionFunc actionFunc;
-    /* 0x160 */ char unk_160[0x2C];
+    /* 0x160 */ f32 speed;
+    /* 0x164 */ s32 endPoint;
+    /* 0x168 */ s32 curPoint;
+    /* 0x16C */ s32 direction;
+    /* 0x170 */ Vec3s* points;
+    /* 0x174 */ s32 isWeightOn;
+    /* 0x178 */ s32 isWeightOnPrev;
+    /* 0x17C */ f32 cycleSpeed;
+    /* 0x180 */ f32 maxHeight;
+    /* 0x184 */ s16 cycle;
+    /* 0x186 */ s16 waitTimer;
+    /* 0x188 */ s16 cutsceneTimer;
 } ObjDanpeilift; // size = 0x18C
 
 extern const ActorInit Obj_Danpeilift_InitVars;