diff --git a/data/odyssey_functions.csv b/data/odyssey_functions.csv
index bdf00ee..87e9e71 100644
--- a/data/odyssey_functions.csv
+++ b/data/odyssey_functions.csv
@@ -26324,23 +26324,23 @@ Address,Quality,Size,Name
 0x000000710042d22c,U,000008,_ZNK19PlayerAnimFrameCtrl15getCurrentFrameEv
 0x000000710042d234,U,000008,_ZNK19PlayerAnimFrameCtrl7getRateEv
 0x000000710042d23c,U,000044,_ZNK19PlayerAnimFrameCtrl11isActionEndEv
-0x000000710042d268,U,000008,_ZN17PlayerAreaCheckerC2EPKN2al9LiveActorEPK17PlayerModelHolder
-0x000000710042d270,U,000008,_ZNK17PlayerAreaChecker9isInWaterERKN4sead7Vector3IfEE
-0x000000710042d278,U,000144,_ZNK17PlayerAreaChecker15isInWaterDoubleERKN4sead7Vector3IfEEf
-0x000000710042d308,U,000172,_ZNK17PlayerAreaChecker18isInWaterWallCatchERKN4sead7Vector3IfEEf
-0x000000710042d3b4,U,000008,_ZNK17PlayerAreaChecker12isInWaterIceERKN4sead7Vector3IfEE
-0x000000710042d3bc,U,000148,_ZNK17PlayerAreaChecker18isInWaterIceDoubleERKN4sead7Vector3IfEEf
-0x000000710042d450,U,000036,_ZNK17PlayerAreaChecker7isInWetERKN4sead7Vector3IfEE
-0x000000710042d474,U,000036,_ZNK17PlayerAreaChecker8isInRiseERKN4sead7Vector3IfEE
-0x000000710042d498,U,000036,_ZNK17PlayerAreaChecker14isInHackCancelERKN4sead7Vector3IfEE
-0x000000710042d4bc,U,000068,_ZNK17PlayerAreaChecker12isInRecoveryEPPKN2al7AreaObjERKN4sead7Vector3IfEE
-0x000000710042d500,U,000036,_ZNK17PlayerAreaChecker15isInRecoveryBanERKN4sead7Vector3IfEE
-0x000000710042d524,U,000036,_ZNK17PlayerAreaChecker16isInWallClimbBanERKN4sead7Vector3IfEE
-0x000000710042d548,U,000128,_ZNK17PlayerAreaChecker17isInForceRecoveryEPN4sead7Vector3IfEES3_PPKN2al7AreaObjERKS2_
-0x000000710042d5c8,U,000096,_ZNK17PlayerAreaChecker16isInShadowLengthEPfRKN4sead7Vector3IfEE
-0x000000710042d628,U,000036,_ZNK17PlayerAreaChecker12isInCarryBanERKN4sead7Vector3IfEE
-0x000000710042d64c,U,000036,_ZNK17PlayerAreaChecker16tryFindStainAreaERKN4sead7Vector3IfEE
-0x000000710042d670,U,000036,_ZNK17PlayerAreaChecker26tryFindInvalidateInputFallERKN4sead7Vector3IfEE
+0x000000710042d268,O,000008,_ZN17PlayerAreaCheckerC2EPKN2al9LiveActorEPK17PlayerModelHolder
+0x000000710042d270,O,000008,_ZNK17PlayerAreaChecker9isInWaterERKN4sead7Vector3IfEE
+0x000000710042d278,O,000144,_ZNK17PlayerAreaChecker15isInWaterDoubleERKN4sead7Vector3IfEEf
+0x000000710042d308,O,000172,_ZNK17PlayerAreaChecker18isInWaterWallCatchERKN4sead7Vector3IfEEf
+0x000000710042d3b4,O,000008,_ZNK17PlayerAreaChecker12isInWaterIceERKN4sead7Vector3IfEE
+0x000000710042d3bc,O,000148,_ZNK17PlayerAreaChecker18isInWaterIceDoubleERKN4sead7Vector3IfEEf
+0x000000710042d450,O,000036,_ZNK17PlayerAreaChecker7isInWetERKN4sead7Vector3IfEE
+0x000000710042d474,O,000036,_ZNK17PlayerAreaChecker8isInRiseERKN4sead7Vector3IfEE
+0x000000710042d498,O,000036,_ZNK17PlayerAreaChecker14isInHackCancelERKN4sead7Vector3IfEE
+0x000000710042d4bc,O,000068,_ZNK17PlayerAreaChecker12isInRecoveryEPPKN2al7AreaObjERKN4sead7Vector3IfEE
+0x000000710042d500,O,000036,_ZNK17PlayerAreaChecker15isInRecoveryBanERKN4sead7Vector3IfEE
+0x000000710042d524,O,000036,_ZNK17PlayerAreaChecker16isInWallClimbBanERKN4sead7Vector3IfEE
+0x000000710042d548,O,000128,_ZNK17PlayerAreaChecker17isInForceRecoveryEPN4sead7Vector3IfEES3_PPKN2al7AreaObjERKS2_
+0x000000710042d5c8,O,000096,_ZNK17PlayerAreaChecker16isInShadowLengthEPfRKN4sead7Vector3IfEE
+0x000000710042d628,O,000036,_ZNK17PlayerAreaChecker12isInCarryBanERKN4sead7Vector3IfEE
+0x000000710042d64c,O,000036,_ZNK17PlayerAreaChecker16tryFindStainAreaERKN4sead7Vector3IfEE
+0x000000710042d670,O,000036,_ZNK17PlayerAreaChecker26tryFindInvalidateInputFallERKN4sead7Vector3IfEE
 0x000000710042d694,U,000156,_ZN24PlayerBindableSensorListC2Ev
 0x000000710042d730,U,000092,_ZN24PlayerBindableSensorList5clearEv
 0x000000710042d78c,U,000096,_ZN24PlayerBindableSensorList6appendEPN2al9HitSensorEjfi
diff --git a/lib/al/Library/Nature/NatureUtil.h b/lib/al/Library/Nature/NatureUtil.h
new file mode 100644
index 0000000..71fc4b5
--- /dev/null
+++ b/lib/al/Library/Nature/NatureUtil.h
@@ -0,0 +1,11 @@
+#pragma once
+
+#include <math/seadVector.h>
+
+namespace al {
+class LiveActor;
+
+bool isInWaterPos(const LiveActor* actor, const sead::Vector3f& pos);
+bool isInIceWaterPos(const LiveActor* actor, const sead::Vector3f& pos);
+
+}  // namespace al
diff --git a/src/Player/PlayerAreaChecker.cpp b/src/Player/PlayerAreaChecker.cpp
new file mode 100644
index 0000000..65566f2
--- /dev/null
+++ b/src/Player/PlayerAreaChecker.cpp
@@ -0,0 +1,93 @@
+#include "Player/PlayerAreaChecker.h"
+
+#include "Library/Area/AreaObjUtil.h"
+#include "Library/LiveActor/ActorPoseKeeper.h"
+#include "Library/LiveActor/LiveActor.h"
+#include "Library/Nature/NatureUtil.h"
+
+#include "System/GameDataHolderAccessor.h"
+#include "Util/Area.h"
+#include "Util/ObjUtil.h"
+
+PlayerAreaChecker::PlayerAreaChecker(const al::LiveActor* player,
+                                     const PlayerModelHolder* modelHolder)
+    : mPlayer(player), mModelHolder(modelHolder) {}
+
+bool PlayerAreaChecker::isInWater(const sead::Vector3f& pos) const {
+    return al::isInWaterPos(mPlayer, pos);
+}
+
+bool PlayerAreaChecker::isInWaterDouble(const sead::Vector3f& pos, f32 gravityFactor) const {
+    return isInWater(pos) || isInWater(pos - al::getGravity(mPlayer) * gravityFactor);
+}
+
+bool PlayerAreaChecker::isInWaterWallCatch(const sead::Vector3f& pos, f32 gravityFactor) const {
+    sead::Vector3f rootOffset = {0.0f, 0.0f, 0.0f};
+    rs::calcOffsetAllRoot(&rootOffset, mModelHolder);
+    return isInWater(pos + rootOffset - al::getGravity(mPlayer) * gravityFactor);
+}
+
+bool PlayerAreaChecker::isInWaterIce(const sead::Vector3f& pos) const {
+    return al::isInIceWaterPos(mPlayer, pos);
+}
+
+bool PlayerAreaChecker::isInWaterIceDouble(const sead::Vector3f& pos, f32 gravityFactor) const {
+    // second one must be written like this to match
+    return isInWaterIce(pos) ||
+           al::isInIceWaterPos(mPlayer, pos - al::getGravity(mPlayer) * gravityFactor);
+}
+
+bool PlayerAreaChecker::isInWet(const sead::Vector3f& pos) const {
+    return al::isInAreaObj(mPlayer, "WetArea", pos);
+}
+
+bool PlayerAreaChecker::isInRise(const sead::Vector3f& pos) const {
+    return al::isInAreaObj(mPlayer, "RiseArea", pos);
+}
+
+bool PlayerAreaChecker::isInHackCancel(const sead::Vector3f& pos) const {
+    return al::isInAreaObj(mPlayer, "HackCancelArea", pos);
+}
+
+bool PlayerAreaChecker::isInRecovery(const al::AreaObj** area, const sead::Vector3f& pos) const {
+    const al::AreaObj* recoveryArea = al::tryFindAreaObj(mPlayer, "RecoveryArea", pos);
+    if (recoveryArea) {
+        *area = recoveryArea;
+        return true;
+    }
+    return false;
+}
+
+bool PlayerAreaChecker::isInRecoveryBan(const sead::Vector3f& pos) const {
+    return al::isInAreaObj(mPlayer, "RecoveryBanArea", pos);
+}
+
+bool PlayerAreaChecker::isInWallClimbBan(const sead::Vector3f& pos) const {
+    return al::isInAreaObj(mPlayer, "InvalidateWallClimbArea", pos);
+}
+
+bool PlayerAreaChecker::isInForceRecovery(sead::Vector3f* targetPos, sead::Vector3f* targetUp,
+                                          const al::AreaObj** area,
+                                          const sead::Vector3f& pos) const {
+    return rs::isKidsMode(mPlayer) &&
+           rs::tryFindForceRecoveryArea(targetPos, targetUp, area, mPlayer, pos);
+}
+
+bool PlayerAreaChecker::isInShadowLength(f32* shadowLength, const sead::Vector3f& pos) const {
+    const al::AreaObj* shadowArea = al::tryFindAreaObj(mPlayer, "PlayerShadowLengthArea", pos);
+    if (shadowArea)
+        return al::tryGetAreaObjArg(shadowLength, shadowArea, "ShadowLength");
+    return false;
+}
+
+bool PlayerAreaChecker::isInCarryBan(const sead::Vector3f& pos) const {
+    return al::isInAreaObj(mPlayer, "CarryBanArea", pos);
+}
+
+const al::AreaObj* PlayerAreaChecker::tryFindStainArea(const sead::Vector3f& pos) const {
+    return al::tryFindAreaObj(mPlayer, "StainArea", pos);
+}
+
+const al::AreaObj* PlayerAreaChecker::tryFindInvalidateInputFall(const sead::Vector3f& pos) const {
+    return al::tryFindAreaObj(mPlayer, "InvalidateInputFallArea", pos);
+}
diff --git a/src/Player/PlayerAreaChecker.h b/src/Player/PlayerAreaChecker.h
new file mode 100644
index 0000000..0dfc005
--- /dev/null
+++ b/src/Player/PlayerAreaChecker.h
@@ -0,0 +1,37 @@
+#pragma once
+
+#include <math/seadVector.h>
+
+namespace al {
+class LiveActor;
+class AreaObj;
+}  // namespace al
+class PlayerModelHolder;
+
+class PlayerAreaChecker {
+public:
+    PlayerAreaChecker(const al::LiveActor* player, const PlayerModelHolder* modelHolder);
+    bool isInWater(const sead::Vector3f& pos) const;
+    bool isInWaterDouble(const sead::Vector3f& pos, f32 gravityFactor) const;
+    bool isInWaterWallCatch(const sead::Vector3f& pos, f32 gravityFactor) const;
+    bool isInWaterIce(const sead::Vector3f& pos) const;
+    bool isInWaterIceDouble(const sead::Vector3f& pos, f32 gravityFactor) const;
+    bool isInWet(const sead::Vector3f& pos) const;
+    bool isInRise(const sead::Vector3f& pos) const;
+    bool isInHackCancel(const sead::Vector3f& pos) const;
+    bool isInRecovery(const al::AreaObj** area, const sead::Vector3f& pos) const;
+    bool isInRecoveryBan(const sead::Vector3f& pos) const;
+    bool isInWallClimbBan(const sead::Vector3f& pos) const;
+    bool isInForceRecovery(sead::Vector3f* targetPos, sead::Vector3f* targetUp,
+                           const al::AreaObj** area, const sead::Vector3f& pos) const;
+    bool isInShadowLength(f32* shadowLength, const sead::Vector3f& pos) const;
+    bool isInCarryBan(const sead::Vector3f& pos) const;
+    const al::AreaObj* tryFindStainArea(const sead::Vector3f& pos) const;
+    const al::AreaObj* tryFindInvalidateInputFall(const sead::Vector3f& pos) const;
+
+private:
+    const al::LiveActor* mPlayer;
+    const PlayerModelHolder* mModelHolder;
+};
+
+static_assert(sizeof(PlayerAreaChecker) == 0x10);
diff --git a/src/System/GameDataHolderAccessor.h b/src/System/GameDataHolderAccessor.h
index 44da300..f91ca8d 100644
--- a/src/System/GameDataHolderAccessor.h
+++ b/src/System/GameDataHolderAccessor.h
@@ -16,5 +16,6 @@ public:
 };
 
 namespace rs {
-bool isInvalidChangeStage(const al::LiveActor*);
-}
+bool isInvalidChangeStage(const al::LiveActor* actor);
+bool isKidsMode(const al::LiveActor* actor);
+}  // namespace rs
diff --git a/src/Util/Area.h b/src/Util/Area.h
index fff244f..db3b26e 100644
--- a/src/Util/Area.h
+++ b/src/Util/Area.h
@@ -4,8 +4,13 @@
 
 namespace al {
 class LiveActor;
+class AreaObj;
+class IUseAreaObj;
 }  // namespace al
 
 namespace rs {
-bool isInChangeStageArea(const al::LiveActor*, const sead::Vector3f*);
+bool isInChangeStageArea(const al::LiveActor* actor, const sead::Vector3f* pos);
+bool tryFindForceRecoveryArea(sead::Vector3f* targetPos, sead::Vector3f* targetUp,
+                              const al::AreaObj** area, const al::IUseAreaObj* obj,
+                              const sead::Vector3f& pos);
 }  // namespace rs
diff --git a/src/Util/ObjUtil.h b/src/Util/ObjUtil.h
index f699dd4..5c5e2d5 100644
--- a/src/Util/ObjUtil.h
+++ b/src/Util/ObjUtil.h
@@ -6,6 +6,7 @@ namespace al {
 class CollisionParts;
 class LiveActor;
 }  // namespace al
+class PlayerModelHolder;
 
 namespace rs {
 
@@ -21,4 +22,6 @@ bool findGrabCeilPosWallHit(const al::CollisionParts**, sead::Vector3f*, sead::V
                             sead::Vector3f*, const al::LiveActor*, const sead::Vector3f&,
                             const sead::Vector3f&, f32, f32, f32);
 
+void calcOffsetAllRoot(sead::Vector3f* offset, const PlayerModelHolder* model);
+
 }  // namespace rs