diff --git a/soh/include/functions.h b/soh/include/functions.h
index d4b47b60c..64d7026e1 100644
--- a/soh/include/functions.h
+++ b/soh/include/functions.h
@@ -717,15 +717,15 @@ void BgCheck_DrawStaticCollision(PlayState*, CollisionContext*);
 void func_80043334(CollisionContext* colCtx, Actor* actor, s32 bgId);
 s32 func_800433A4(CollisionContext* colCtx, s32 bgId, Actor* actor);
 void DynaPolyActor_Init(DynaPolyActor* dynaActor, s32 flags);
-void func_800434A0(DynaPolyActor* dynaActor);
-void func_800434A8(DynaPolyActor* dynaActor);
-void func_800434C8(CollisionContext* colCtx, s32 floorBgId);
-void func_80043508(CollisionContext* colCtx, s32 floorBgId);
-void func_80043538(DynaPolyActor* dynaActor);
-s32 func_80043548(DynaPolyActor* dynaActor);
-s32 func_8004356C(DynaPolyActor* dynaActor);
-s32 func_80043590(DynaPolyActor* dynaActor);
-s32 func_800435B4(DynaPolyActor* dynaActor);
+void DynaPolyActor_UnsetAllInteractFlags(DynaPolyActor* dynaActor);
+void DynaPolyActor_SetActorOnTop(DynaPolyActor* dynaActor);
+void DynaPoly_SetPlayerOnTop(CollisionContext* colCtx, s32 floorBgId);
+void DynaPoly_SetPlayerAbove(CollisionContext* colCtx, s32 floorBgId);
+void DynaPolyActor_SetSwitchPressed(DynaPolyActor* dynaActor);
+s32 DynaPolyActor_IsActorOnTop(DynaPolyActor* dynaActor);
+s32 DynaPolyActor_IsPlayerOnTop(DynaPolyActor* dynaActor);
+s32 DynaPolyActor_IsPlayerAbove(DynaPolyActor* dynaActor);
+s32 DynaPolyActor_IsSwitchPressed(DynaPolyActor* dynaActor);
 s32 func_800435D8(PlayState* play, DynaPolyActor* dynaActor, s16 arg2, s16 arg3, s16 arg4);
 void Camera_Init(Camera* camera, View* view, CollisionContext* colCtx, PlayState* play);
 void Camera_InitPlayerSettings(Camera* camera, Player* player);
diff --git a/soh/include/z64actor.h b/soh/include/z64actor.h
index 156f1d679..5d6bfc26b 100644
--- a/soh/include/z64actor.h
+++ b/soh/include/z64actor.h
@@ -214,6 +214,13 @@ if neither of the above are set : blue
 0x2000 : translucent, else opaque
 */
 
+#define DYNA_INTERACT_ACTOR_ON_TOP (1 << 0)  // There is an actor standing on the collision of the dynapoly actor
+#define DYNA_INTERACT_PLAYER_ON_TOP (1 << 1) // The player actor is standing on the collision of the dynapoly actor
+#define DYNA_INTERACT_PLAYER_ABOVE \
+    (1 << 2) // The player is directly above the collision of the dynapoly actor (any distance above)
+#define DYNA_INTERACT_ACTOR_SWITCH_PRESSED \
+    (1 << 3) // An actor that is capable of pressing switches is on top of the dynapoly actor
+
 typedef struct DynaPolyActor {
     /* 0x000 */ struct Actor actor;
     /* 0x14C */ s32 bgId;
@@ -221,8 +228,8 @@ typedef struct DynaPolyActor {
     /* 0x154 */ f32 unk_154;
     /* 0x158 */ s16 unk_158; // y rotation?
     /* 0x15A */ u16 unk_15A;
-    /* 0x15C */ u32 unk_15C;
-    /* 0x160 */ u8 unk_160;
+    /* 0x15C */ u32 transformFlags;
+    /* 0x160 */ u8 interactFlags;
     /* 0x162 */ s16 unk_162;
 } DynaPolyActor; // size = 0x164
 
diff --git a/soh/src/code/code_800430A0.c b/soh/src/code/code_800430A0.c
index 379f4a3e6..6047b2fc0 100644
--- a/soh/src/code/code_800430A0.c
+++ b/soh/src/code/code_800430A0.c
@@ -60,10 +60,10 @@ void func_80043334(CollisionContext* colCtx, Actor* actor, s32 bgId) {
     if (DynaPoly_IsBgIdBgActor(bgId)) {
         DynaPolyActor* dynaActor = DynaPoly_GetActor(colCtx, bgId);
         if (dynaActor != NULL) {
-            func_800434A8(dynaActor);
+            DynaPolyActor_SetActorOnTop(dynaActor);
 
             if (CHECK_FLAG_ALL(actor->flags, ACTOR_FLAG_CAN_PRESS_SWITCH)) {
-                func_80043538(dynaActor);
+                DynaPolyActor_SetSwitchPressed(dynaActor);
             }
         }
     }
@@ -91,12 +91,12 @@ s32 func_800433A4(CollisionContext* colCtx, s32 bgId, Actor* actor) {
         return false;
     }
 
-    if (dynaActor->unk_15C & 1) {
+    if (dynaActor->transformFlags & 1) {
         func_800430A0(colCtx, bgId, actor);
         result = true;
     }
 
-    if (dynaActor->unk_15C & 2) {
+    if (dynaActor->transformFlags & 2) {
         func_800432A0(colCtx, bgId, actor);
         result = true;
     }
diff --git a/soh/src/code/code_80043480.c b/soh/src/code/z_bg_item.c
similarity index 57%
rename from soh/src/code/code_80043480.c
rename to soh/src/code/z_bg_item.c
index 3ba733e26..d36374b59 100644
--- a/soh/src/code/code_80043480.c
+++ b/soh/src/code/z_bg_item.c
@@ -2,74 +2,74 @@
 
 void DynaPolyActor_Init(DynaPolyActor* dynaActor, s32 flags) {
     dynaActor->bgId = -1;
-    dynaActor->unk_15C = flags;
-    dynaActor->unk_160 = 0;
+    dynaActor->transformFlags = flags;
+    dynaActor->interactFlags = 0;
     dynaActor->unk_150 = 0.0f;
     dynaActor->unk_154 = 0.0f;
 }
 
-void func_800434A0(DynaPolyActor* dynaActor) {
-    dynaActor->unk_160 = 0;
+void DynaPolyActor_UnsetAllInteractFlags(DynaPolyActor* dynaActor) {
+    dynaActor->interactFlags = 0;
 }
 
-void func_800434A8(DynaPolyActor* dynaActor) {
-    dynaActor->unk_160 |= 1;
+void DynaPolyActor_SetActorOnTop(DynaPolyActor* dynaActor) {
+    dynaActor->interactFlags |= DYNA_INTERACT_ACTOR_ON_TOP;
 }
 
-void func_800434B8(DynaPolyActor* dynaActor) {
-    dynaActor->unk_160 |= 2;
+void DynaPolyActor_SetPlayerOnTop(DynaPolyActor* dynaActor) {
+    dynaActor->interactFlags |= DYNA_INTERACT_PLAYER_ON_TOP;
 }
 
-void func_800434C8(CollisionContext* colCtx, s32 floorBgId) {
+void DynaPoly_SetPlayerOnTop(CollisionContext* colCtx, s32 floorBgId) {
     DynaPolyActor* dynaActor = DynaPoly_GetActor(colCtx, floorBgId);
 
     if (dynaActor != NULL) {
-        func_800434B8(dynaActor);
+        DynaPolyActor_SetPlayerOnTop(dynaActor);
     }
 }
 
-void func_800434F8(DynaPolyActor* dynaActor) {
-    dynaActor->unk_160 |= 4;
+void DynaPolyActor_SetPlayerAbove(DynaPolyActor* dynaActor) {
+    dynaActor->interactFlags |= DYNA_INTERACT_PLAYER_ABOVE;
 }
 
-void func_80043508(CollisionContext* colCtx, s32 floorBgId) {
+void DynaPoly_SetPlayerAbove(CollisionContext* colCtx, s32 floorBgId) {
     DynaPolyActor* dynaActor = DynaPoly_GetActor(colCtx, floorBgId);
 
     if (dynaActor != NULL) {
-        func_800434F8(dynaActor);
+        DynaPolyActor_SetPlayerAbove(dynaActor);
     }
 }
 
-void func_80043538(DynaPolyActor* dynaActor) {
-    dynaActor->unk_160 |= 8;
+void DynaPolyActor_SetSwitchPressed(DynaPolyActor* dynaActor) {
+    dynaActor->interactFlags |= DYNA_INTERACT_ACTOR_SWITCH_PRESSED;
 }
 
-s32 func_80043548(DynaPolyActor* dynaActor) {
-    if (dynaActor->unk_160 & 1) {
+s32 DynaPolyActor_IsActorOnTop(DynaPolyActor* dynaActor) {
+    if (dynaActor->interactFlags & DYNA_INTERACT_ACTOR_ON_TOP) {
         return true;
     } else {
         return false;
     }
 }
 
-s32 func_8004356C(DynaPolyActor* dynaActor) {
-    if (dynaActor->unk_160 & 2) {
+s32 DynaPolyActor_IsPlayerOnTop(DynaPolyActor* dynaActor) {
+    if (dynaActor->interactFlags & DYNA_INTERACT_PLAYER_ON_TOP) {
         return true;
     } else {
         return false;
     }
 }
 
-s32 func_80043590(DynaPolyActor* dynaActor) {
-    if (dynaActor->unk_160 & 4) {
+s32 DynaPolyActor_IsPlayerAbove(DynaPolyActor* dynaActor) {
+    if (dynaActor->interactFlags & DYNA_INTERACT_PLAYER_ABOVE) {
         return true;
     } else {
         return false;
     }
 }
 
-s32 func_800435B4(DynaPolyActor* dynaActor) {
-    if (dynaActor->unk_160 & 8) {
+s32 DynaPolyActor_IsSwitchPressed(DynaPolyActor* dynaActor) {
+    if (dynaActor->interactFlags & DYNA_INTERACT_ACTOR_SWITCH_PRESSED) {
         return true;
     } else {
         return false;
diff --git a/soh/src/code/z_bgcheck.c b/soh/src/code/z_bgcheck.c
index df7dd0600..20deee679 100644
--- a/soh/src/code/z_bgcheck.c
+++ b/soh/src/code/z_bgcheck.c
@@ -2954,7 +2954,7 @@ void func_8003F8EC(PlayState* play, DynaCollisionContext* dyna, Actor* actor) {
         if ((dyna->bgActorFlags[i] & 1)) {
             dynaActor = DynaPoly_GetActor(&play->colCtx, i);
             if (dynaActor != NULL && &dynaActor->actor == actor) {
-                func_800434A0((DynaPolyActor*)actor);
+                DynaPolyActor_UnsetAllInteractFlags((DynaPolyActor*)actor);
                 return;
             }
         }
diff --git a/soh/src/code/z_en_a_keep.c b/soh/src/code/z_en_a_keep.c
index 307ecf048..9b29b666e 100644
--- a/soh/src/code/z_en_a_keep.c
+++ b/soh/src/code/z_en_a_keep.c
@@ -122,8 +122,8 @@ void EnAObj_Init(Actor* thisx, PlayState* play) {
 
     thisx->focus.pos = thisx->world.pos;
     this->dyna.bgId = BGACTOR_NEG_ONE;
-    this->dyna.unk_160 = 0;
-    this->dyna.unk_15C = DPM_UNK;
+    this->dyna.interactFlags = 0;
+    this->dyna.transformFlags = DPM_UNK;
     thisx->uncullZoneDownward = 1200.0f;
     thisx->uncullZoneScale = 200.0f;
 
@@ -234,7 +234,7 @@ void EnAObj_SetupBlockRot(EnAObj* this, s16 type) {
 
 void EnAObj_BlockRot(EnAObj* this, PlayState* play) {
     if (this->rotateState == 0) {
-        if (this->dyna.unk_160 != 0) {
+        if (this->dyna.interactFlags != 0) {
             this->rotateState++;
             this->rotateForTimer = 20;
 
diff --git a/soh/src/overlays/actors/ovl_Bg_Bdan_Objects/z_bg_bdan_objects.c b/soh/src/overlays/actors/ovl_Bg_Bdan_Objects/z_bg_bdan_objects.c
index 489a50cfa..e46758bd0 100644
--- a/soh/src/overlays/actors/ovl_Bg_Bdan_Objects/z_bg_bdan_objects.c
+++ b/soh/src/overlays/actors/ovl_Bg_Bdan_Objects/z_bg_bdan_objects.c
@@ -326,7 +326,7 @@ void func_8086C6EC(BgBdanObjects* this, PlayState* play) {
 }
 
 void func_8086C76C(BgBdanObjects* this, PlayState* play) {
-    if (func_8004356C(&this->dyna)) {
+    if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
         if (this->dyna.actor.xzDistToPlayer < 120.0f) {
             this->actionFunc = func_8086C7D0;
             OnePointCutscene_Init(play, 3090, -99, &this->dyna.actor, MAIN_CAM);
@@ -352,7 +352,7 @@ void func_8086C874(BgBdanObjects* this, PlayState* play) {
         this->timer--;
     }
     if (this->switchFlag == 0) {
-        if (func_8004356C(&this->dyna)) {
+        if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
             this->cameraSetting = play->cameraPtrs[MAIN_CAM]->setting;
             Camera_ChangeSetting(play->cameraPtrs[MAIN_CAM], CAM_SET_NORMAL2);
             func_8005AD1C(play->cameraPtrs[MAIN_CAM], 4);
@@ -360,7 +360,7 @@ void func_8086C874(BgBdanObjects* this, PlayState* play) {
         }
     } else {
         Camera_ChangeSetting(play->cameraPtrs[MAIN_CAM], CAM_SET_NORMAL2);
-        if (!func_8004356C(&this->dyna)) {
+        if (!DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
             if (this->switchFlag != 0) {
                 this->switchFlag--;
             }
@@ -411,7 +411,7 @@ void func_8086CABC(BgBdanObjects* this, PlayState* play) {
 }
 
 void func_8086CB10(BgBdanObjects* this, PlayState* play) {
-    if (func_8004356C(&this->dyna)) {
+    if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
         Flags_SetSwitch(play, this->switchFlag);
         this->timer = 50;
         this->actionFunc = func_8086CB8C;
diff --git a/soh/src/overlays/actors/ovl_Bg_Bdan_Switch/z_bg_bdan_switch.c b/soh/src/overlays/actors/ovl_Bg_Bdan_Switch/z_bg_bdan_switch.c
index 7e0781067..13ecc51bb 100644
--- a/soh/src/overlays/actors/ovl_Bg_Bdan_Switch/z_bg_bdan_switch.c
+++ b/soh/src/overlays/actors/ovl_Bg_Bdan_Switch/z_bg_bdan_switch.c
@@ -254,13 +254,13 @@ void func_8086D5C4(BgBdanSwitch* this) {
 void func_8086D5E0(BgBdanSwitch* this, PlayState* play) {
     switch (this->dyna.actor.params & 0xFF) {
         case BLUE:
-            if (func_800435B4(&this->dyna)) {
+            if (DynaPolyActor_IsSwitchPressed(&this->dyna)) {
                 func_8086D67C(this);
                 func_8086D4B4(this, play);
             }
             break;
         case YELLOW:
-            if (func_8004356C(&this->dyna)) {
+            if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
                 func_8086D67C(this);
                 func_8086D4B4(this, play);
             }
@@ -293,7 +293,7 @@ void func_8086D730(BgBdanSwitch* this) {
 void func_8086D754(BgBdanSwitch* this, PlayState* play) {
     switch (this->dyna.actor.params & 0xFF) {
         case BLUE:
-            if (!func_800435B4(&this->dyna)) {
+            if (!DynaPolyActor_IsSwitchPressed(&this->dyna)) {
                 if (this->unk_1D8 <= 0) {
                     func_8086D7FC(this);
                     func_8086D548(this, play);
@@ -328,7 +328,7 @@ void func_8086D86C(BgBdanSwitch* this) {
 }
 
 void func_8086D888(BgBdanSwitch* this, PlayState* play) {
-    if (func_8004356C(&this->dyna)) {
+    if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
         func_8086D8BC(this);
     }
 }
@@ -371,7 +371,7 @@ void func_8086D9F8(BgBdanSwitch* this) {
 void func_8086DA1C(BgBdanSwitch* this, PlayState* play) {
     Actor* heldActor = GET_PLAYER(play)->heldActor;
 
-    if (func_8004356C(&this->dyna)) {
+    if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
         if (heldActor != NULL && heldActor->id == ACTOR_EN_RU1) {
             if (this->unk_1D8 <= 0) {
                 func_8086D944(this);
diff --git a/soh/src/overlays/actors/ovl_Bg_Gnd_Firemeiro/z_bg_gnd_firemeiro.c b/soh/src/overlays/actors/ovl_Bg_Gnd_Firemeiro/z_bg_gnd_firemeiro.c
index fa66b29aa..e838191ae 100644
--- a/soh/src/overlays/actors/ovl_Bg_Gnd_Firemeiro/z_bg_gnd_firemeiro.c
+++ b/soh/src/overlays/actors/ovl_Bg_Gnd_Firemeiro/z_bg_gnd_firemeiro.c
@@ -60,7 +60,7 @@ void BgGndFiremeiro_Destroy(Actor* thisx, PlayState* play2) {
 void BgGndFiremeiro_Sink(BgGndFiremeiro* this, PlayState* play) {
     f32 sunkHeight = this->initPos.y - 150.0f;
 
-    if (func_8004356C(&this->dyna)) {
+    if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
         this->timer = 10;
     }
 
@@ -85,7 +85,7 @@ void BgGndFiremeiro_Shake(BgGndFiremeiro* this, PlayState* play) {
     s32 pad;
     f32 randSign;
 
-    if (func_8004356C(&this->dyna)) { // Player standing on it
+    if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) { // Player standing on it
         if (this->timer > 0) {
             this->timer--;
 
@@ -114,7 +114,7 @@ void BgGndFiremeiro_Rise(BgGndFiremeiro* this, PlayState* play) {
     Player* player = GET_PLAYER(play);
     Actor* thisx = &this->dyna.actor;
 
-    if ((player->currentBoots != PLAYER_BOOTS_HOVER) && func_8004356C(&this->dyna)) { // Player standing on it
+    if ((player->currentBoots != PLAYER_BOOTS_HOVER) && DynaPolyActor_IsPlayerOnTop(&this->dyna)) { // Player standing on it
         if (thisx->world.pos.y < this->initPos.y) {
             this->actionFunc = BgGndFiremeiro_Sink;
             this->timer = 20;
diff --git a/soh/src/overlays/actors/ovl_Bg_Haka_Ship/z_bg_haka_ship.c b/soh/src/overlays/actors/ovl_Bg_Haka_Ship/z_bg_haka_ship.c
index cec9f68e4..b47a85590 100644
--- a/soh/src/overlays/actors/ovl_Bg_Haka_Ship/z_bg_haka_ship.c
+++ b/soh/src/overlays/actors/ovl_Bg_Haka_Ship/z_bg_haka_ship.c
@@ -179,7 +179,7 @@ void BgHakaShip_CrashFall(BgHakaShip* this, PlayState* play) {
         }
     } else {
         Audio_PlayActorSound2(&this->dyna.actor, NA_SE_EV_BLOCKSINK - SFX_FLAG);
-        if ((this->dyna.actor.home.pos.y - this->dyna.actor.world.pos.y > 500.0f) && func_8004356C(&this->dyna)) {
+        if ((this->dyna.actor.home.pos.y - this->dyna.actor.world.pos.y > 500.0f) && DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
             Play_TriggerVoidOut(play);
         }
     }
diff --git a/soh/src/overlays/actors/ovl_Bg_Hidan_Fslift/z_bg_hidan_fslift.c b/soh/src/overlays/actors/ovl_Bg_Hidan_Fslift/z_bg_hidan_fslift.c
index e7151be7d..9ff062dd7 100644
--- a/soh/src/overlays/actors/ovl_Bg_Hidan_Fslift/z_bg_hidan_fslift.c
+++ b/soh/src/overlays/actors/ovl_Bg_Hidan_Fslift/z_bg_hidan_fslift.c
@@ -90,7 +90,7 @@ void func_80886FCC(BgHidanFslift* this, PlayState* play) {
         if ((this->dyna.actor.world.pos.y - this->dyna.actor.home.pos.y) < 0.5f) {
             heightBool = true;
         }
-        if (func_80043590(&this->dyna) && (heightBool)) {
+        if (DynaPolyActor_IsPlayerAbove(&this->dyna) && (heightBool)) {
             this->actionFunc = func_808870D8;
         } else if (!heightBool) {
             this->actionFunc = func_8088706C;
@@ -109,7 +109,7 @@ void func_8088706C(BgHidanFslift* this, PlayState* play) {
 }
 
 void func_808870D8(BgHidanFslift* this, PlayState* play) {
-    if (func_80043590(&this->dyna)) {
+    if (DynaPolyActor_IsPlayerAbove(&this->dyna)) {
         if (Math_StepToF(&this->dyna.actor.world.pos.y, this->dyna.actor.home.pos.y + 790.0f, 4.0f)) {
             Audio_PlayActorSound2(&this->dyna.actor, NA_SE_EV_BLOCK_BOUND);
             func_80886FB4(this);
@@ -126,12 +126,12 @@ void BgHidanFslift_Update(Actor* thisx, PlayState* play) {
     BgHidanFslift* this = (BgHidanFslift*)thisx;
 
     this->actionFunc(this, play);
-    if (func_8004356C(&this->dyna)) {
+    if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
         if (this->unk_16A == 0) {
             this->unk_16A = 3;
         }
         Camera_ChangeSetting(play->cameraPtrs[MAIN_CAM], CAM_SET_FIRE_PLATFORM);
-    } else if (!func_8004356C(&this->dyna)) {
+    } else if (!DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
         if (this->unk_16A != 0) {
             Camera_ChangeSetting(play->cameraPtrs[MAIN_CAM], CAM_SET_DUNGEON0);
         }
diff --git a/soh/src/overlays/actors/ovl_Bg_Hidan_Hrock/z_bg_hidan_hrock.c b/soh/src/overlays/actors/ovl_Bg_Hidan_Hrock/z_bg_hidan_hrock.c
index ea49fbd4f..fecd9451a 100644
--- a/soh/src/overlays/actors/ovl_Bg_Hidan_Hrock/z_bg_hidan_hrock.c
+++ b/soh/src/overlays/actors/ovl_Bg_Hidan_Hrock/z_bg_hidan_hrock.c
@@ -216,7 +216,7 @@ void func_808896B8(BgHidanHrock* this, PlayState* play) {
         CollisionCheck_SetAC(play, &play->colChkCtx, &this->collider.base);
     }
 
-    if (func_8004356C(&this->dyna)) {
+    if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
         Math_StepToF(&this->dyna.actor.world.pos.y, this->dyna.actor.home.pos.y - 5.0f, 1.0f);
     } else {
         Math_StepToF(&this->dyna.actor.world.pos.y, this->dyna.actor.home.pos.y, 1.0f);
diff --git a/soh/src/overlays/actors/ovl_Bg_Hidan_Rock/z_bg_hidan_rock.c b/soh/src/overlays/actors/ovl_Bg_Hidan_Rock/z_bg_hidan_rock.c
index 15f8a6586..108378185 100644
--- a/soh/src/overlays/actors/ovl_Bg_Hidan_Rock/z_bg_hidan_rock.c
+++ b/soh/src/overlays/actors/ovl_Bg_Hidan_Rock/z_bg_hidan_rock.c
@@ -212,7 +212,7 @@ void func_8088B5F4(BgHidanRock* this, PlayState* play) {
 }
 
 void func_8088B634(BgHidanRock* this, PlayState* play) {
-    if (func_8004356C(&this->dyna)) {
+    if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
         this->timer = 20;
         this->dyna.actor.world.rot.y = Camera_GetCamDirYaw(GET_ACTIVE_CAM(play)) + 0x4000;
         this->actionFunc = func_8088B69C;
@@ -263,12 +263,12 @@ void func_8088B79C(BgHidanRock* this, PlayState* play) {
     this->unk_16C = CLAMP_MIN(this->unk_16C, 0.0f);
 
     if (this->type == 0) {
-        if (func_8004356C(&this->dyna)) {
+        if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
             if (this->unk_169 == 0) {
                 this->unk_169 = 3;
             }
             Camera_ChangeSetting(play->cameraPtrs[MAIN_CAM], CAM_SET_FIRE_PLATFORM);
-        } else if (!func_8004356C(&this->dyna)) {
+        } else if (!DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
             if (this->unk_169 != 0) {
                 Camera_ChangeSetting(play->cameraPtrs[MAIN_CAM], CAM_SET_DUNGEON0);
             }
@@ -316,12 +316,12 @@ void func_8088B990(BgHidanRock* this, PlayState* play) {
 
     this->unk_16C = (this->dyna.actor.world.pos.y + 50.0f - this->dyna.actor.home.pos.y + 40.0f) / 80.0f;
     if (this->type == 0) {
-        if (func_8004356C(&this->dyna)) {
+        if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
             if (this->unk_169 == 0) {
                 this->unk_169 = 3;
             }
             Camera_ChangeSetting(play->cameraPtrs[MAIN_CAM], CAM_SET_FIRE_PLATFORM);
-        } else if (!func_8004356C(&this->dyna)) {
+        } else if (!DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
             if (this->unk_169 != 0) {
                 Camera_ChangeSetting(play->cameraPtrs[MAIN_CAM], CAM_SET_DUNGEON0);
             }
diff --git a/soh/src/overlays/actors/ovl_Bg_Hidan_Sima/z_bg_hidan_sima.c b/soh/src/overlays/actors/ovl_Bg_Hidan_Sima/z_bg_hidan_sima.c
index 03615e480..2b9331ab8 100644
--- a/soh/src/overlays/actors/ovl_Bg_Hidan_Sima/z_bg_hidan_sima.c
+++ b/soh/src/overlays/actors/ovl_Bg_Hidan_Sima/z_bg_hidan_sima.c
@@ -118,7 +118,7 @@ void func_8088E518(BgHidanSima* this, PlayState* play) {
     Player* player = GET_PLAYER(play);
 
     Math_StepToF(&this->dyna.actor.world.pos.y, this->dyna.actor.home.pos.y, 3.4f);
-    if (func_8004356C(&this->dyna) && !(player->stateFlags1 & (PLAYER_STATE1_HANGING_OFF_LEDGE | PLAYER_STATE1_CLIMBING_LEDGE))) {
+    if (DynaPolyActor_IsPlayerOnTop(&this->dyna) && !(player->stateFlags1 & (PLAYER_STATE1_HANGING_OFF_LEDGE | PLAYER_STATE1_CLIMBING_LEDGE))) {
         this->timer = 20;
         this->dyna.actor.world.rot.y = Camera_GetCamDirYaw(GET_ACTIVE_CAM(play)) + 0x4000;
         if (this->dyna.actor.home.pos.y <= this->dyna.actor.world.pos.y) {
@@ -150,7 +150,7 @@ void func_8088E5D0(BgHidanSima* this, PlayState* play) {
 }
 
 void func_8088E6D0(BgHidanSima* this, PlayState* play) {
-    if (func_8004356C(&this->dyna)) {
+    if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
         this->timer = 20;
     } else if (this->timer != 0) {
         this->timer--;
diff --git a/soh/src/overlays/actors/ovl_Bg_Hidan_Syoku/z_bg_hidan_syoku.c b/soh/src/overlays/actors/ovl_Bg_Hidan_Syoku/z_bg_hidan_syoku.c
index 44c1cc5e5..ae8e5b530 100644
--- a/soh/src/overlays/actors/ovl_Bg_Hidan_Syoku/z_bg_hidan_syoku.c
+++ b/soh/src/overlays/actors/ovl_Bg_Hidan_Syoku/z_bg_hidan_syoku.c
@@ -61,7 +61,7 @@ void func_8088F47C(BgHidanSyoku* this) {
 }
 
 void func_8088F4B8(BgHidanSyoku* this, PlayState* play) {
-    if (Flags_GetClear(play, this->dyna.actor.room) && func_8004356C(&this->dyna)) {
+    if (Flags_GetClear(play, this->dyna.actor.room) && DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
         this->timer = 140;
         this->actionFunc = func_8088F514;
     }
@@ -109,12 +109,12 @@ void BgHidanSyoku_Update(Actor* thisx, PlayState* play) {
     BgHidanSyoku* this = (BgHidanSyoku*)thisx;
 
     this->actionFunc(this, play);
-    if (func_8004356C(&this->dyna)) {
+    if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
         if (this->unk_168 == 0) {
             this->unk_168 = 3;
         }
         Camera_ChangeSetting(play->cameraPtrs[MAIN_CAM], CAM_SET_FIRE_PLATFORM);
-    } else if (!func_8004356C(&this->dyna)) {
+    } else if (!DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
         if (this->unk_168 != 0) {
             Camera_ChangeSetting(play->cameraPtrs[MAIN_CAM], CAM_SET_DUNGEON0);
         }
diff --git a/soh/src/overlays/actors/ovl_Bg_Jya_1flift/z_bg_jya_1flift.c b/soh/src/overlays/actors/ovl_Bg_Jya_1flift/z_bg_jya_1flift.c
index 35cbc3f49..270bcd9ff 100644
--- a/soh/src/overlays/actors/ovl_Bg_Jya_1flift/z_bg_jya_1flift.c
+++ b/soh/src/overlays/actors/ovl_Bg_Jya_1flift/z_bg_jya_1flift.c
@@ -187,7 +187,7 @@ void BgJya1flift_Update(Actor* thisx, PlayState* play2) {
     // Room 0 is the first room and 6 is the room that the lift starts on
     if (play->roomCtx.curRoom.num == 6 || play->roomCtx.curRoom.num == 0) {
         this->actionFunc(this, play);
-        tempIsRiding = func_8004356C(&this->dyna) ? true : false;
+        tempIsRiding = DynaPolyActor_IsPlayerOnTop(&this->dyna) ? true : false;
         if ((this->actionFunc == BgJya1flift_Move) || (this->actionFunc == BgJya1flift_DelayMove)) {
             if (tempIsRiding) {
                 Camera_ChangeSetting(play->cameraPtrs[MAIN_CAM], CAM_SET_FIRE_PLATFORM);
diff --git a/soh/src/overlays/actors/ovl_Bg_Jya_Lift/z_bg_jya_lift.c b/soh/src/overlays/actors/ovl_Bg_Jya_Lift/z_bg_jya_lift.c
index f8dea0c01..bc7b756d8 100644
--- a/soh/src/overlays/actors/ovl_Bg_Jya_Lift/z_bg_jya_lift.c
+++ b/soh/src/overlays/actors/ovl_Bg_Jya_Lift/z_bg_jya_lift.c
@@ -146,13 +146,14 @@ void BgJyaLift_Update(Actor* thisx, PlayState* play2) {
     if (this->actionFunc != NULL) {
         this->actionFunc(this, play);
     }
-    if ((this->dyna.unk_160 & 4) && ((this->unk_16B & 4) == 0)) {
+    if ((this->dyna.interactFlags & DYNA_INTERACT_PLAYER_ABOVE) &&
+        ((this->unk_16B & DYNA_INTERACT_PLAYER_ABOVE) == 0)) {
         Camera_ChangeSetting(play->cameraPtrs[MAIN_CAM], CAM_SET_DIRECTED_YAW);
-    } else if (((this->dyna.unk_160) & 4) == 0 && ((this->unk_16B & 4)) &&
+    } else if (((this->dyna.interactFlags) & 4) == 0 && ((this->unk_16B & 4)) &&
                (play->cameraPtrs[MAIN_CAM]->setting == CAM_SET_DIRECTED_YAW)) {
         Camera_ChangeSetting(play->cameraPtrs[MAIN_CAM], CAM_SET_DUNGEON0);
     }
-    this->unk_16B = this->dyna.unk_160;
+    this->unk_16B = this->dyna.interactFlags;
 
     // Spirit Temple room 5 is the main room with the statue room 25 is directly above room 5
     if ((play->roomCtx.curRoom.num != 5) && (play->roomCtx.curRoom.num != 25)) {
diff --git a/soh/src/overlays/actors/ovl_Bg_Menkuri_Kaiten/z_bg_menkuri_kaiten.c b/soh/src/overlays/actors/ovl_Bg_Menkuri_Kaiten/z_bg_menkuri_kaiten.c
index f209fa291..90a3cbee1 100644
--- a/soh/src/overlays/actors/ovl_Bg_Menkuri_Kaiten/z_bg_menkuri_kaiten.c
+++ b/soh/src/overlays/actors/ovl_Bg_Menkuri_Kaiten/z_bg_menkuri_kaiten.c
@@ -51,7 +51,7 @@ void BgMenkuriKaiten_Destroy(Actor* thisx, PlayState* play) {
 void BgMenkuriKaiten_Update(Actor* thisx, PlayState* play) {
     BgMenkuriKaiten* this = (BgMenkuriKaiten*)thisx;
 
-    if (!Flags_GetSwitch(play, this->dyna.actor.params) && func_80043590(&this->dyna)) {
+    if (!Flags_GetSwitch(play, this->dyna.actor.params) && DynaPolyActor_IsPlayerAbove(&this->dyna)) {
         func_8002F974(&this->dyna.actor, NA_SE_EV_ELEVATOR_MOVE - SFX_FLAG);
         this->dyna.actor.shape.rot.y += 0x80;
     }
diff --git a/soh/src/overlays/actors/ovl_Bg_Mori_Bigst/z_bg_mori_bigst.c b/soh/src/overlays/actors/ovl_Bg_Mori_Bigst/z_bg_mori_bigst.c
index 611a892cf..c95fe6fd8 100644
--- a/soh/src/overlays/actors/ovl_Bg_Mori_Bigst/z_bg_mori_bigst.c
+++ b/soh/src/overlays/actors/ovl_Bg_Mori_Bigst/z_bg_mori_bigst.c
@@ -241,7 +241,7 @@ void BgMoriBigst_Update(Actor* thisx, PlayState* play) {
     if (this->waitTimer > 0) {
         this->waitTimer--;
     }
-    if (func_80043590(&this->dyna)) {
+    if (DynaPolyActor_IsPlayerAbove(&this->dyna)) {
         func_80074CE8(play, 6);
     }
     if (this->actionFunc != NULL) {
diff --git a/soh/src/overlays/actors/ovl_Bg_Mori_Elevator/z_bg_mori_elevator.c b/soh/src/overlays/actors/ovl_Bg_Mori_Elevator/z_bg_mori_elevator.c
index e5e84af5a..f0ca8d96c 100644
--- a/soh/src/overlays/actors/ovl_Bg_Mori_Elevator/z_bg_mori_elevator.c
+++ b/soh/src/overlays/actors/ovl_Bg_Mori_Elevator/z_bg_mori_elevator.c
@@ -125,7 +125,8 @@ void BgMoriElevator_Destroy(Actor* thisx, PlayState* play) {
 }
 
 s32 BgMoriElevator_IsPlayerRiding(BgMoriElevator* this, PlayState* play) {
-    return ((this->dyna.unk_160 & 2) && !(this->unk_170 & 2) &&
+    return ((this->dyna.interactFlags & DYNA_INTERACT_PLAYER_ON_TOP) &&
+            !(this->unk_170 & DYNA_INTERACT_PLAYER_ON_TOP) &&
             ((GET_PLAYER(play)->actor.world.pos.y - this->dyna.actor.world.pos.y) < 80.0f));
 }
 
@@ -244,7 +245,7 @@ void BgMoriElevator_Update(Actor* thisx, PlayState* play) {
     BgMoriElevator* this = (BgMoriElevator*)thisx;
 
     this->actionFunc(this, play);
-    this->unk_170 = this->dyna.unk_160;
+    this->unk_170 = this->dyna.interactFlags;
     this->unk_16C = Flags_GetSwitch(play, (thisx->params & 0x3F));
 }
 
diff --git a/soh/src/overlays/actors/ovl_Bg_Spot08_Iceblock/z_bg_spot08_iceblock.c b/soh/src/overlays/actors/ovl_Bg_Spot08_Iceblock/z_bg_spot08_iceblock.c
index d7b45c9b6..2eb0bef7e 100644
--- a/soh/src/overlays/actors/ovl_Bg_Spot08_Iceblock/z_bg_spot08_iceblock.c
+++ b/soh/src/overlays/actors/ovl_Bg_Spot08_Iceblock/z_bg_spot08_iceblock.c
@@ -101,7 +101,7 @@ void BgSpot08Iceblock_SinkUnderPlayer(BgSpot08Iceblock* this) {
     }
 
     // Sink under Player's weight if standing on it
-    target = (func_80043548(&this->dyna) ? -4.0f : 0.0f);
+    target = (DynaPolyActor_IsActorOnTop(&this->dyna) ? -4.0f : 0.0f);
 
     Math_StepToF(&this->sinkOffset, target, step);
 }
@@ -200,7 +200,7 @@ void BgSpot08Iceblock_Roll(BgSpot08Iceblock* this, PlayState* play) {
     surfaceNormalHorizontal.z = this->surfaceNormal.z;
 
     // If player is standing on it or holding the edge
-    if (func_8004356C(&this->dyna) && (playerCentroidDist > 3.0f)) {
+    if (DynaPolyActor_IsPlayerOnTop(&this->dyna) && (playerCentroidDist > 3.0f)) {
         Math_Vec3f_Diff(&playerCentroidDiff, &surfaceNormalHorizontal, &playerMoment);
         BgSpot08Iceblock_MultVectorScalar(&playerMoment, &playerMoment,
                                           (sInertias[rollDataIndex] * playerCentroidDist) / this->dyna.actor.scale.x);
diff --git a/soh/src/overlays/actors/ovl_Bg_Sst_Floor/z_bg_sst_floor.c b/soh/src/overlays/actors/ovl_Bg_Sst_Floor/z_bg_sst_floor.c
index af63fdcd2..bf4d7c934 100644
--- a/soh/src/overlays/actors/ovl_Bg_Sst_Floor/z_bg_sst_floor.c
+++ b/soh/src/overlays/actors/ovl_Bg_Sst_Floor/z_bg_sst_floor.c
@@ -62,13 +62,13 @@ void BgSstFloor_Update(BgSstFloor* thisx, PlayState* play) {
 
     colHeader->vtxList = SEGMENTED_TO_VIRTUAL(colHeader->vtxList);
 
-    if (func_80043590(&this->dyna) && (this->dyna.actor.yDistToPlayer < 1000.0f)) {
+    if (DynaPolyActor_IsPlayerAbove(&this->dyna) && (this->dyna.actor.yDistToPlayer < 1000.0f)) {
         Camera_ChangeSetting(play->cameraPtrs[MAIN_CAM], CAM_SET_BOSS_BONGO);
     } else {
         Camera_ChangeSetting(play->cameraPtrs[MAIN_CAM], CAM_SET_DUNGEON0);
     }
 
-    if (func_8004356C(&this->dyna) && (player->fallDistance > 1000.0f)) {
+    if (DynaPolyActor_IsPlayerOnTop(&this->dyna) && (player->fallDistance > 1000.0f)) {
         this->dyna.actor.params = 1;
         Audio_PlayActorSound2(&this->dyna.actor, NA_SE_EN_SHADEST_TAIKO_HIGH);
     }
@@ -82,7 +82,7 @@ void BgSstFloor_Update(BgSstFloor* thisx, PlayState* play) {
         this->dyna.actor.params = BONGOFLOOR_REST;
         this->drumPhase = 28;
 
-        if (func_8004356C(&this->dyna) && !(player->stateFlags1 & (PLAYER_STATE1_HANGING_OFF_LEDGE | PLAYER_STATE1_CLIMBING_LEDGE))) {
+        if (DynaPolyActor_IsPlayerOnTop(&this->dyna) && !(player->stateFlags1 & (PLAYER_STATE1_HANGING_OFF_LEDGE | PLAYER_STATE1_CLIMBING_LEDGE))) {
             distFromRim = 600.0f - this->dyna.actor.xzDistToPlayer;
             if (distFromRim > 0.0f) {
                 if (distFromRim > 350.0f) {
diff --git a/soh/src/overlays/actors/ovl_Bg_Ydan_Sp/z_bg_ydan_sp.c b/soh/src/overlays/actors/ovl_Bg_Ydan_Sp/z_bg_ydan_sp.c
index 59402d658..1307971c7 100644
--- a/soh/src/overlays/actors/ovl_Bg_Ydan_Sp/z_bg_ydan_sp.c
+++ b/soh/src/overlays/actors/ovl_Bg_Ydan_Sp/z_bg_ydan_sp.c
@@ -292,7 +292,7 @@ void BgYdanSp_FloorWebIdle(BgYdanSp* this, PlayState* play) {
         BgYdanSp_BurnWeb(this, play);
         return;
     }
-    if (func_8004356C(&this->dyna)) {
+    if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
         sqrtFallDistance = sqrtf(CLAMP_MIN(player->fallDistance, 0.0f));
         if (player->fallDistance > 750.0f) {
             if (this->dyna.actor.xzDistToPlayer < 80.0f) {
diff --git a/soh/src/overlays/actors/ovl_En_Brob/z_en_brob.c b/soh/src/overlays/actors/ovl_En_Brob/z_en_brob.c
index 4d7243455..fbedc59bd 100644
--- a/soh/src/overlays/actors/ovl_En_Brob/z_en_brob.c
+++ b/soh/src/overlays/actors/ovl_En_Brob/z_en_brob.c
@@ -154,7 +154,7 @@ void func_809CB054(EnBrob* this, PlayState* play) {
         this->timer--;
     }
     if (this->timer == 0) {
-        if (func_8004356C(&this->dyna) != 0) {
+        if (DynaPolyActor_IsPlayerOnTop(&this->dyna) != 0) {
             func_8002F71C(play, &this->dyna.actor, 5.0f, this->dyna.actor.yawTowardsPlayer, 1.0f);
             func_809CAE44(this, play);
         } else if (this->dyna.actor.xzDistToPlayer < 300.0f) {
diff --git a/soh/src/overlays/actors/ovl_En_Lightbox/z_en_lightbox.c b/soh/src/overlays/actors/ovl_En_Lightbox/z_en_lightbox.c
index 61a411371..5f7aae79a 100644
--- a/soh/src/overlays/actors/ovl_En_Lightbox/z_en_lightbox.c
+++ b/soh/src/overlays/actors/ovl_En_Lightbox/z_en_lightbox.c
@@ -52,8 +52,8 @@ void EnLightbox_Init(Actor* thisx, PlayState* play) {
     thisx->colChkInfo.cylRadius = 30;
     thisx->colChkInfo.cylHeight = 50;
     ActorShape_Init(&thisx->shape, 0.0f, ActorShadow_DrawCircle, 6.0f);
-    this->dyna.unk_160 = 0;
-    this->dyna.unk_15C = 0;
+    this->dyna.interactFlags = 0;
+    this->dyna.transformFlags = 0;
     thisx->targetMode = 0;
     thisx->gravity = -2.0f;
     CollisionHeader_GetVirtual(&object_lightbox_Col_001F10, &colHeader);
diff --git a/soh/src/overlays/actors/ovl_En_Pu_box/z_en_pu_box.c b/soh/src/overlays/actors/ovl_En_Pu_box/z_en_pu_box.c
index 140ebd478..536032a8d 100644
--- a/soh/src/overlays/actors/ovl_En_Pu_box/z_en_pu_box.c
+++ b/soh/src/overlays/actors/ovl_En_Pu_box/z_en_pu_box.c
@@ -52,8 +52,8 @@ void EnPubox_Init(Actor* thisx, PlayState* play) {
     thisx->uncullZoneDownward = 1200.0f;
     thisx->uncullZoneScale = 720.0f;
     ActorShape_Init(&thisx->shape, 0.0f, ActorShadow_DrawCircle, 6.0f);
-    this->dyna.unk_160 = 0;
-    this->dyna.unk_15C = DPM_UNK;
+    this->dyna.interactFlags = 0;
+    this->dyna.transformFlags = DPM_UNK;
     thisx->targetMode = 1;
     thisx->gravity = -2.0f;
     CollisionHeader_GetVirtual(&gBlockMediumCol, &colHeader);
diff --git a/soh/src/overlays/actors/ovl_En_Siofuki/z_en_siofuki.c b/soh/src/overlays/actors/ovl_En_Siofuki/z_en_siofuki.c
index e577a3d45..8e4596ff3 100644
--- a/soh/src/overlays/actors/ovl_En_Siofuki/z_en_siofuki.c
+++ b/soh/src/overlays/actors/ovl_En_Siofuki/z_en_siofuki.c
@@ -128,7 +128,7 @@ void func_80AFBE8C(EnSiofuki* this, PlayState* play) {
 
     if ((dX > (this->dyna.actor.scale.x * -346.0f)) && (dX < (this->dyna.actor.scale.x * 346.0f)) &&
         (dZ > (this->dyna.actor.scale.z * -400.0f)) && (dZ < (this->dyna.actor.scale.z * 400.0f)) && (dY < 0.0f)) {
-        if (func_8004356C(&this->dyna)) {
+        if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
             if (this->splashTimer <= 0) {
                 EffectSsGSplash_Spawn(play, &player->actor.world.pos, NULL, NULL, 1, 1);
                 this->splashTimer = 10;
diff --git a/soh/src/overlays/actors/ovl_Obj_Bean/z_obj_bean.c b/soh/src/overlays/actors/ovl_Obj_Bean/z_obj_bean.c
index e1dd79b39..20d7fa71a 100644
--- a/soh/src/overlays/actors/ovl_Obj_Bean/z_obj_bean.c
+++ b/soh/src/overlays/actors/ovl_Obj_Bean/z_obj_bean.c
@@ -752,7 +752,7 @@ void ObjBean_SetupWaitForPlayer(ObjBean* this) {
 }
 
 void ObjBean_WaitForPlayer(ObjBean* this, PlayState* play) {
-    if (func_8004356C(&this->dyna)) { // Player is standing on
+    if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) { // Player is standing on
         ObjBean_SetupFly(this);
         if (play->sceneNum == SCENE_LOST_WOODS) { // Lost woods
             Camera_ChangeSetting(play->cameraPtrs[MAIN_CAM], CAM_SET_BEAN_LOST_WOODS);
@@ -786,7 +786,7 @@ void ObjBean_Fly(ObjBean* this, PlayState* play) {
             Camera_ChangeSetting(camera, CAM_SET_NORMAL0);
         }
 
-    } else if (func_8004356C(&this->dyna) != 0) { // Player is on top
+    } else if (DynaPolyActor_IsPlayerOnTop(&this->dyna) != 0) { // Player is on top
 
         func_8002F974(&this->dyna.actor, NA_SE_PL_PLANT_MOVE - SFX_FLAG);
 
@@ -812,7 +812,7 @@ void ObjBean_SetupWaitForStepOff(ObjBean* this) {
 }
 
 void ObjBean_WaitForStepOff(ObjBean* this, PlayState* play) {
-    if (!func_80043590(&this->dyna)) {
+    if (!DynaPolyActor_IsPlayerAbove(&this->dyna)) {
         ObjBean_SetupWaitForPlayer(this);
     }
     ObjBean_UpdatePosition(this);
@@ -824,7 +824,7 @@ void func_80B908EC(ObjBean* this) {
 }
 
 void func_80B90918(ObjBean* this, PlayState* play) {
-    if (!func_8004356C(&this->dyna)) {
+    if (!DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
         ObjBean_SetupPathCount(this, play);
         ObjBean_SetupPath(this, play);
         ObjBean_Move(this);
@@ -904,7 +904,7 @@ void ObjBean_Update(Actor* thisx, PlayState* play) {
     }
     Actor_SetFocus(&this->dyna.actor, 6.0f);
     if (this->stateFlags & BEAN_STATE_DYNAPOLY_SET) {
-        if (func_8004356C(&this->dyna)) {
+        if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
             this->stateFlags |= BEAN_STATE_PLAYER_ON_TOP;
         } else {
             this->stateFlags &= ~BEAN_STATE_PLAYER_ON_TOP;
diff --git a/soh/src/overlays/actors/ovl_Obj_Elevator/z_obj_elevator.c b/soh/src/overlays/actors/ovl_Obj_Elevator/z_obj_elevator.c
index 694644a80..f62956014 100644
--- a/soh/src/overlays/actors/ovl_Obj_Elevator/z_obj_elevator.c
+++ b/soh/src/overlays/actors/ovl_Obj_Elevator/z_obj_elevator.c
@@ -86,7 +86,7 @@ void func_80B92C80(ObjElevator* this, PlayState* play) {
     f32 sub;
     Actor* thisx = &this->dyna.actor;
 
-    if ((this->dyna.unk_160 & 2) && !(this->unk_170 & 2)) {
+    if ((this->dyna.interactFlags & DYNA_INTERACT_PLAYER_ON_TOP) && !(this->unk_170 & DYNA_INTERACT_PLAYER_ON_TOP)) {
         sub = thisx->world.pos.y - thisx->home.pos.y;
         if (fabsf(sub) < 0.1f) {
             this->unk_168 = thisx->home.pos.y + ((thisx->params >> 0xC) & 0xF) * 80.0f;
@@ -118,7 +118,7 @@ void ObjElevator_Update(Actor* thisx, PlayState* play) {
     if (this->actionFunc) {
         this->actionFunc(this, play);
     }
-    this->unk_170 = this->dyna.unk_160;
+    this->unk_170 = this->dyna.interactFlags;
 }
 
 void ObjElevator_Draw(Actor* thisx, PlayState* play) {
diff --git a/soh/src/overlays/actors/ovl_Obj_Lift/z_obj_lift.c b/soh/src/overlays/actors/ovl_Obj_Lift/z_obj_lift.c
index f916bf0fe..166dd4c36 100644
--- a/soh/src/overlays/actors/ovl_Obj_Lift/z_obj_lift.c
+++ b/soh/src/overlays/actors/ovl_Obj_Lift/z_obj_lift.c
@@ -138,7 +138,7 @@ void func_80B96560(ObjLift* this, PlayState* play) {
     s32 pad;
     s32 quakeIndex;
 
-    if (func_8004356C(&this->dyna)) {
+    if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
         if (this->timer <= 0) {
             if (((this->dyna.actor.params >> 8) & 7) == 7) {
                 func_80B967C0(this);
diff --git a/soh/src/overlays/actors/ovl_Obj_Oshihiki/z_obj_oshihiki.c b/soh/src/overlays/actors/ovl_Obj_Oshihiki/z_obj_oshihiki.c
index b1b8cc166..c69417461 100644
--- a/soh/src/overlays/actors/ovl_Obj_Oshihiki/z_obj_oshihiki.c
+++ b/soh/src/overlays/actors/ovl_Obj_Oshihiki/z_obj_oshihiki.c
@@ -509,8 +509,8 @@ void ObjOshihiki_OnActor(ObjOshihiki* this, PlayState* play) {
         } else {
             dynaPolyActor = DynaPoly_GetActor(&play->colCtx, bgId);
             if (dynaPolyActor != NULL) {
-                func_800434A8(dynaPolyActor);
-                func_80043538(dynaPolyActor);
+                DynaPolyActor_SetActorOnTop(dynaPolyActor);
+                DynaPolyActor_SetSwitchPressed(dynaPolyActor);
 
                 if ((this->timer <= 0) && (fabsf(this->dyna.unk_150) > 0.001f)) {
                     if (ObjOshihiki_StrongEnough(this) && ObjOshihiki_NoSwitchPress(this, dynaPolyActor, play) &&
@@ -537,9 +537,9 @@ void ObjOshihiki_OnActor(ObjOshihiki* this, PlayState* play) {
         } else {
             dynaPolyActor = DynaPoly_GetActor(&play->colCtx, bgId);
 
-            if ((dynaPolyActor != NULL) && (dynaPolyActor->unk_15C & 1)) {
-                func_800434A8(dynaPolyActor);
-                func_80043538(dynaPolyActor);
+            if ((dynaPolyActor != NULL) && (dynaPolyActor->transformFlags & 1)) {
+                DynaPolyActor_SetActorOnTop(dynaPolyActor);
+                DynaPolyActor_SetSwitchPressed(dynaPolyActor);
                 this->dyna.actor.world.pos.y = this->dyna.actor.floorHeight;
             } else {
                 ObjOshihiki_SetupFall(this, play);
diff --git a/soh/src/overlays/actors/ovl_Obj_Switch/z_obj_switch.c b/soh/src/overlays/actors/ovl_Obj_Switch/z_obj_switch.c
index e08291480..05e3577c0 100644
--- a/soh/src/overlays/actors/ovl_Obj_Switch/z_obj_switch.c
+++ b/soh/src/overlays/actors/ovl_Obj_Switch/z_obj_switch.c
@@ -390,25 +390,26 @@ void ObjSwitch_FloorUp(ObjSwitch* this, PlayState* play) {
     } else {
         switch ((this->dyna.actor.params >> 4 & 7)) {
             case OBJSWITCH_SUBTYPE_FLOOR_0:
-                if (func_8004356C(&this->dyna)) {
+                if (DynaPolyActor_IsPlayerOnTop(&this->dyna)) {
                     ObjSwitch_FloorPressInit(this);
                     ObjSwitch_SetOn(this, play);
                 }
                 break;
             case OBJSWITCH_SUBTYPE_FLOOR_1:
-                if ((this->dyna.unk_160 & 2) && !(this->unk_17F & 2)) {
+                if ((this->dyna.interactFlags & DYNA_INTERACT_PLAYER_ON_TOP) &&
+                    !(this->unk_17F & DYNA_INTERACT_PLAYER_ON_TOP)) {
                     ObjSwitch_FloorPressInit(this);
                     ObjSwitch_SetOn(this, play);
                 }
                 break;
             case OBJSWITCH_SUBTYPE_FLOOR_2:
-                if (func_800435B4(&this->dyna)) {
+                if (DynaPolyActor_IsSwitchPressed(&this->dyna)) {
                     ObjSwitch_FloorPressInit(this);
                     ObjSwitch_SetOn(this, play);
                 }
                 break;
             case OBJSWITCH_SUBTYPE_FLOOR_3:
-                if (func_800435B4(&this->dyna)) {
+                if (DynaPolyActor_IsSwitchPressed(&this->dyna)) {
                     ObjSwitch_FloorPressInit(this);
                     ObjSwitch_SetOff(this, play);
                 }
@@ -448,14 +449,15 @@ void ObjSwitch_FloorDown(ObjSwitch* this, PlayState* play) {
             }
             break;
         case OBJSWITCH_SUBTYPE_FLOOR_1:
-            if ((this->dyna.unk_160 & 2) && !(this->unk_17F & 2)) {
+            if ((this->dyna.interactFlags & DYNA_INTERACT_PLAYER_ON_TOP) &&
+                !(this->unk_17F & DYNA_INTERACT_PLAYER_ON_TOP)) {
                 ObjSwitch_FloorReleaseInit(this);
                 ObjSwitch_SetOff(this, play);
             }
             break;
         case OBJSWITCH_SUBTYPE_FLOOR_2:
         case OBJSWITCH_SUBTYPE_FLOOR_3:
-            if (!func_800435B4(&this->dyna) && !Player_InCsMode(play)) {
+            if (!DynaPolyActor_IsSwitchPressed(&this->dyna) && !Player_InCsMode(play)) {
                 if (this->releaseTimer <= 0) {
                     ObjSwitch_FloorReleaseInit(this);
                     if ((this->dyna.actor.params >> 4 & 7) == OBJSWITCH_SUBTYPE_FLOOR_2) {
@@ -695,7 +697,7 @@ void ObjSwitch_Update(Actor* thisx, PlayState* play) {
     switch ((this->dyna.actor.params & 7)) {
         case OBJSWITCH_TYPE_FLOOR:
         case OBJSWITCH_TYPE_FLOOR_RUSTY:
-            this->unk_17F = this->dyna.unk_160;
+            this->unk_17F = this->dyna.interactFlags;
             break;
         case OBJSWITCH_TYPE_EYE:
             this->unk_17F = this->tris.col.base.acFlags;
diff --git a/soh/src/overlays/actors/ovl_Obj_Timeblock/z_obj_timeblock.c b/soh/src/overlays/actors/ovl_Obj_Timeblock/z_obj_timeblock.c
index dfcf9605d..1701eb60d 100644
--- a/soh/src/overlays/actors/ovl_Obj_Timeblock/z_obj_timeblock.c
+++ b/soh/src/overlays/actors/ovl_Obj_Timeblock/z_obj_timeblock.c
@@ -148,7 +148,7 @@ void ObjTimeblock_Destroy(Actor* thisx, PlayState* play) {
 }
 
 u8 ObjTimeblock_PlayerIsInRange(ObjTimeblock* this, PlayState* play) {
-    if (this->isVisible && func_80043590(&this->dyna)) {
+    if (this->isVisible && DynaPolyActor_IsPlayerAbove(&this->dyna)) {
         return false;
     }
 
diff --git a/soh/src/overlays/actors/ovl_Obj_Warp2block/z_obj_warp2block.c b/soh/src/overlays/actors/ovl_Obj_Warp2block/z_obj_warp2block.c
index 8315d42fc..f4c77c73f 100644
--- a/soh/src/overlays/actors/ovl_Obj_Warp2block/z_obj_warp2block.c
+++ b/soh/src/overlays/actors/ovl_Obj_Warp2block/z_obj_warp2block.c
@@ -82,7 +82,7 @@ s32 func_80BA1ECC(ObjWarp2block* this, PlayState* play) {
     Vec3f sp20;
     f32 temp_f2;
 
-    if (func_80043590(&this->dyna)) {
+    if (DynaPolyActor_IsPlayerAbove(&this->dyna)) {
         return 0;
     }
 
diff --git a/soh/src/overlays/actors/ovl_player_actor/z_player.c b/soh/src/overlays/actors/ovl_player_actor/z_player.c
index d51e33e8b..cda6356f5 100644
--- a/soh/src/overlays/actors/ovl_player_actor/z_player.c
+++ b/soh/src/overlays/actors/ovl_player_actor/z_player.c
@@ -11236,7 +11236,7 @@ void Player_ProcessSceneCollision(PlayState* play, Player* this) {
                 func_80074CE8(play,
                               SurfaceType_GetLightSettingIndex(&play->colCtx, floorPoly, this->actor.floorBgId));
             } else {
-                func_80043508(&play->colCtx, this->actor.floorBgId);
+                DynaPoly_SetPlayerAbove(&play->colCtx, this->actor.floorBgId);
             }
         }
 
@@ -11438,7 +11438,7 @@ void Player_ProcessSceneCollision(PlayState* play, Player* this) {
             s32 pad3;
 
             if (this->actor.floorBgId != BGCHECK_SCENE) {
-                func_800434C8(&play->colCtx, this->actor.floorBgId);
+                DynaPoly_SetPlayerOnTop(&play->colCtx, this->actor.floorBgId);
             }
 
             floorPolyNormalX = COLPOLY_GET_NORMAL(floorPoly->normal.x);