Moves func_800CB000 to z_bg_item, decompiles func_800CB000, and documents z_bg_item and a few DynaPolyActor struct members. (#407)

* Moves func_800CB000 to z_bg_item, decompiles func_800CB000, and documents z_bg_item and a few DynaPolyActor struct members.

* Adding usage of dynapoly state flag defines.

* Formats z_bg_item

* Update z_bg_item.c

* Update z_bg_collect.c

* Update z_bg_item.c

* Update z_bg_item.c

* Renames z_bg_item system to DynaPolyActor

* Format

4 files changed, 102 insertions, 63 deletions

diff --git a/src/code/code_800CB000.c b/src/code/code_800CB000.c
deleted file mode 100644
index 7642d35c4..000000000
--- a/src/code/code_800CB000.c
+++ /dev/null
@@ -1,3 +0,0 @@
-#include "global.h"
-
-#pragma GLOBAL_ASM("asm/non_matchings/code/code_800CB000/func_800CB000.s")
diff --git a/src/code/z_actor.c b/src/code/z_actor.c
index 03a362fc6..42f67987a 100644
--- a/src/code/z_actor.c
+++ b/src/code/z_actor.c
@@ -509,8 +509,8 @@ f32 Actor_YDistance(Actor* actor1, Actor* actor2) {
 #pragma GLOBAL_ASM("asm/non_matchings/code/z_actor/func_800B72E0.s")
 
 void func_800B72F8(DynaPolyActor* dpactor, f32 a1, s16 a2) {
-    dpactor->unk150 = a2;
-    dpactor->unk148 += a1;
+    dpactor->yRotation = a2;
+    dpactor->pushForce += a1;
 }
 
 #pragma GLOBAL_ASM("asm/non_matchings/code/z_actor/Actor_IsLinkFacingActor.s")
diff --git a/src/code/z_bg_collect.c b/src/code/z_bg_collect.c
index 29c4cf7da..706c4b80a 100644
--- a/src/code/z_bg_collect.c
+++ b/src/code/z_bg_collect.c
@@ -61,13 +61,13 @@ void BgCheck2_AttachToMesh(CollisionContext* colCtx, Actor* actor, s32 index) {
 
     meshActor = BgCheck_GetActorOfMesh(colCtx, index);
     if (meshActor != NULL) {
-        func_800CAE88(meshActor);
+        DynaPolyActor_SetRidingFallingState(meshActor);
 
         if ((actor->flags & 0x4000000) == 0x4000000) {
-            func_800CAF24(meshActor);
+            DynaPolyActor_SetSwitchPressedState(meshActor);
         }
         if ((actor->flags & 0x20000) == 0x20000) {
-            func_800CAF38(meshActor);
+            DynaPolyActor_SetHeavySwitchPressedState(meshActor);
         }
     }
 }
@@ -80,7 +80,7 @@ u32 BgCheck2_UpdateActorAttachedToMesh(CollisionContext* colCtx, s32 index, Acto
         return 0;
     }
 
-    if (((colCtx->dyna.bgActorFlags[index] & 2) != 0) || ((colCtx->dyna.bgActorFlags[index] & 1) == 0)) {
+    if (colCtx->dyna.bgActorFlags[index] & 2 || !(colCtx->dyna.bgActorFlags[index] & 1)) {
         return 0;
     }
 
@@ -90,12 +90,12 @@ u32 BgCheck2_UpdateActorAttachedToMesh(CollisionContext* colCtx, s32 index, Acto
         return 0;
     }
 
-    if ((meshActor->unk154 & 1) != 0) {
+    if (meshActor->flags & 1) {
         BgCheck2_UpdateActorPosition(colCtx, index, actor);
         wasUpdated = 1;
     }
 
-    if ((meshActor->unk154 & 2) != 0) {
+    if (meshActor->flags & 2) {
         BgCheck2_UpdateActorYRotation(colCtx, index, actor);
         wasUpdated = 1;
     }
diff --git a/src/code/z_bg_item.c b/src/code/z_bg_item.c
index 77cc014b4..92a300e43 100644
--- a/src/code/z_bg_item.c
+++ b/src/code/z_bg_item.c
@@ -1,99 +1,141 @@
 #include "global.h"
 
-void BcCheck3_BgActorInit(DynaPolyActor* actor, UNK_TYPE4 param_2) {
-    actor->bgId = -1;
-    actor->unk148 = 0;
-    actor->unk14C = 0;
-    actor->unk154 = param_2;
-    actor->unk_158 = 0;
+#define DYNAPOLY_STATE_NONE 0
+#define DYNAPOLY_STATE_RIDING_FALLING (1 << 0)
+#define DYNAPOLY_STATE_RIDING_MOVING (1 << 1)
+#define DYNAPOLY_STATE_RIDING_ROTATING (1 << 2)
+#define DYNAPOLY_STATE_SWITCH_PRESSED (1 << 3)
+#define DYNAPOLY_STATE_HEAVY_SWITCH_PRESSED (1 << 4)
+
+void DynaPolyActor_Init(DynaPolyActor* dynaActor, s32 flags) {
+    dynaActor->bgId = -1;
+    dynaActor->pushForce = 0.0f;
+    dynaActor->unk14C = 0.0f;
+    dynaActor->flags = flags;
+    dynaActor->stateFlags = DYNAPOLY_STATE_NONE;
 }
 
-void BgCheck3_LoadMesh(GlobalContext* globalCtx, DynaPolyActor* actor, CollisionHeader* meshHeader) {
-    CollisionHeader* header;
+void DynaPolyActor_LoadMesh(GlobalContext* globalCtx, DynaPolyActor* dynaActor, CollisionHeader* meshHeader) {
+    CollisionHeader* header = NULL;
 
-    header = NULL;
     BgCheck_RelocateMeshHeader(meshHeader, &header);
-    actor->bgId = BgCheck_AddActorMesh(globalCtx, &globalCtx->colCtx.dyna, actor, header);
+    dynaActor->bgId = BgCheck_AddActorMesh(globalCtx, &globalCtx->colCtx.dyna, dynaActor, header);
 }
 
-void BgCheck3_ResetFlags(DynaPolyActor* actor) {
-    actor->unk_158 = 0;
+void DynaPolyActor_ResetState(DynaPolyActor* dynaActor) {
+    dynaActor->stateFlags = DYNAPOLY_STATE_NONE;
 }
 
-void func_800CAE88(DynaPolyActor* actor) {
-    actor->unk_158 |= 1;
+void DynaPolyActor_SetRidingFallingState(DynaPolyActor* dynaActor) {
+    dynaActor->stateFlags |= DYNAPOLY_STATE_RIDING_FALLING;
 }
 
-void func_800CAE9C(DynaPolyActor* actor) {
-    actor->unk_158 |= 2;
+void DynaPolyActor_SetRidingMovingState(DynaPolyActor* dynaActor) {
+    dynaActor->stateFlags |= DYNAPOLY_STATE_RIDING_MOVING;
 }
 
-void func_800CAEB0(CollisionContext* colCtx, s32 index) {
-    DynaPolyActor* actor;
+void DynaPolyActor_SetRidingMovingStateByIndex(CollisionContext* colCtx, s32 index) {
+    DynaPolyActor* dynaActor = BgCheck_GetActorOfMesh(colCtx, index);
 
-    actor = BgCheck_GetActorOfMesh(colCtx, index);
-    if (actor != (DynaPolyActor*)0x0) {
-        func_800CAE9C(actor);
+    if (dynaActor != NULL) {
+        DynaPolyActor_SetRidingMovingState(dynaActor);
     }
 }
 
-void func_800CAEE0(DynaPolyActor* actor) {
-    actor->unk_158 |= 4;
+void DynaPolyActor_SetRidingRotatingState(DynaPolyActor* dynaActor) {
+    dynaActor->stateFlags |= DYNAPOLY_STATE_RIDING_ROTATING;
 }
 
-void func_800CAEF4(CollisionContext* colCtx, s32 index) {
-    DynaPolyActor* actor;
+void DynaPolyActor_SetRidingRotatingStateByIndex(CollisionContext* colCtx, s32 index) {
+    DynaPolyActor* dynaActor = BgCheck_GetActorOfMesh(colCtx, index);
 
-    actor = BgCheck_GetActorOfMesh(colCtx, index);
-    if (actor != (DynaPolyActor*)0x0) {
-        func_800CAEE0(actor);
+    if (dynaActor != NULL) {
+        DynaPolyActor_SetRidingRotatingState(dynaActor);
     }
 }
 
-void func_800CAF24(DynaPolyActor* actor) {
-    actor->unk_158 |= 8;
+void DynaPolyActor_SetSwitchPressedState(DynaPolyActor* dynaActor) {
+    dynaActor->stateFlags |= DYNAPOLY_STATE_SWITCH_PRESSED;
 }
 
-void func_800CAF38(DynaPolyActor* actor) {
-    actor->unk_158 |= 0x10;
+void DynaPolyActor_SetHeavySwitchPressedState(DynaPolyActor* dynaActor) {
+    dynaActor->stateFlags |= DYNAPOLY_STATE_HEAVY_SWITCH_PRESSED;
 }
 
-s32 func_800CAF4C(DynaPolyActor* actor) {
-    if (actor->unk_158 & 1) {
-        return 1;
+s32 DynaPolyActor_IsInRidingFallingState(DynaPolyActor* dynaActor) {
+    if (dynaActor->stateFlags & DYNAPOLY_STATE_RIDING_FALLING) {
+        return true;
     } else {
-        return 0;
+        return false;
     }
 }
 
-s32 func_800CAF70(DynaPolyActor* actor) {
-    if (actor->unk_158 & 2) {
-        return 1;
+s32 DynaPolyActor_IsInRidingMovingState(DynaPolyActor* dynaActor) {
+    if (dynaActor->stateFlags & DYNAPOLY_STATE_RIDING_MOVING) {
+        return true;
     } else {
-        return 0;
+        return false;
     }
 }
 
-s32 func_800CAF94(DynaPolyActor* actor) {
-    if (actor->unk_158 & 4) {
-        return 1;
+s32 DynaPolyActor_IsInRidingRotatingState(DynaPolyActor* dynaActor) {
+    if (dynaActor->stateFlags & DYNAPOLY_STATE_RIDING_ROTATING) {
+        return true;
     } else {
-        return 0;
+        return false;
     }
 }
 
-s32 func_800CAFB8(DynaPolyActor* actor) {
-    if (actor->unk_158 & 8) {
-        return 1;
+s32 DynaPolyActor_IsInSwitchPressedState(DynaPolyActor* dynaActor) {
+    if (dynaActor->stateFlags & DYNAPOLY_STATE_SWITCH_PRESSED) {
+        return true;
     } else {
-        return 0;
+        return false;
     }
 }
 
-s32 func_800CAFDC(DynaPolyActor* actor) {
-    if (actor->unk_158 & 0x10) {
-        return 1;
+s32 DynaPolyActor_IsInHeavySwitchPressedState(DynaPolyActor* dynaActor) {
+    if (dynaActor->stateFlags & DYNAPOLY_STATE_HEAVY_SWITCH_PRESSED) {
+        return true;
     } else {
-        return 0;
+        return false;
     }
 }
+
+s32 DynaPolyActor_ValidateMove(GlobalContext* globalCtx, DynaPolyActor* dynaActor, s16 startRadius, s16 endRadius,
+                               s16 startHeight) {
+    Vec3f startPos;
+    Vec3f endPos;
+    Vec3f intersectionPos;
+    f32 sin = Math_SinS(dynaActor->yRotation);
+    f32 cos = Math_CosS(dynaActor->yRotation);
+    s32 bgId;
+    CollisionPoly* poly;
+    f32 adjustedStartRadius;
+    f32 adjustedEndRadius;
+    f32 sign = (0.0f <= dynaActor->pushForce) ? 1.0f : -1.0f;
+
+    adjustedStartRadius = (f32)startRadius - 0.1f;
+    startPos.x = dynaActor->actor.world.pos.x + (adjustedStartRadius * cos);
+    startPos.y = dynaActor->actor.world.pos.y + startHeight;
+    startPos.z = dynaActor->actor.world.pos.z - (adjustedStartRadius * sin);
+
+    adjustedEndRadius = (f32)endRadius - 0.1f;
+    endPos.x = sign * adjustedEndRadius * sin + startPos.x;
+    endPos.y = startPos.y;
+    endPos.z = sign * adjustedEndRadius * cos + startPos.z;
+
+    if (func_800C56E0(&globalCtx->colCtx, &startPos, &endPos, &intersectionPos, &poly, true, false, false, true, &bgId,
+                      &dynaActor->actor, 0.0f)) {
+        return false;
+    }
+    startPos.x = (dynaActor->actor.world.pos.x * 2.0f) - startPos.x;
+    startPos.z = (dynaActor->actor.world.pos.z * 2.0f) - startPos.z;
+    endPos.x = sign * adjustedEndRadius * sin + startPos.x;
+    endPos.z = sign * adjustedEndRadius * cos + startPos.z;
+    if (func_800C56E0(&globalCtx->colCtx, &startPos, &endPos, &intersectionPos, &poly, true, false, false, true, &bgId,
+                      &dynaActor->actor, 0.0f)) {
+        return false;
+    }
+    return true;
+}