14 files changed, 204 insertions, 88 deletions

diff --git a/src/Blocks/BlockFarmland.h b/src/Blocks/BlockFarmland.h
index f7003a650..2622ac98c 100644
--- a/src/Blocks/BlockFarmland.h
+++ b/src/Blocks/BlockFarmland.h
@@ -115,13 +115,14 @@ private:
 	/** Returns true if there's either a water source block close enough to hydrate the specified position, or it's raining there. */
 	static bool IsWaterInNear(const cChunk & a_Chunk, const Vector3i a_RelPos)
 	{
-		const auto WorldPos = a_Chunk.RelativeToAbsolute(a_RelPos);
-		if (a_Chunk.GetWorld()->IsWeatherWetAtXYZ(WorldPos))
+		if (a_Chunk.IsWeatherWetAt(a_RelPos.addedY(1)))
 		{
 			// Rain hydrates farmland, too
 			return true;
 		}
 
+		const auto WorldPos = a_Chunk.RelativeToAbsolute(a_RelPos);
+
 		// Search for water in a close proximity:
 		// Ref.: https://minecraft.gamepedia.com/Farmland#Hydration
 		// TODO: Rewrite this to use the chunk and its neighbors directly
diff --git a/src/Chunk.cpp b/src/Chunk.cpp
index 5a6cca3eb..4140d4f85 100644
--- a/src/Chunk.cpp
+++ b/src/Chunk.cpp
@@ -626,7 +626,6 @@ void cChunk::SpawnMobs(cMobSpawner & a_MobSpawner)
 		int WorldX, WorldY, WorldZ;
 		PositionToWorldPosition(TryX, TryY, TryZ, WorldX, WorldY, WorldZ);
 
-		EMCSBiome Biome = m_ChunkMap->GetBiomeAt(WorldX, WorldZ);
 		// MG TODO :
 		// Moon cycle (for slime)
 		// check player and playerspawn presence < 24 blocks
@@ -641,12 +640,16 @@ void cChunk::SpawnMobs(cMobSpawner & a_MobSpawner)
 		*/
 
 		NumberOfTries++;
-		if (!IsLightValid())
+
+		Vector3i Try(TryX, TryY, TryZ);
+		const auto Chunk = GetRelNeighborChunkAdjustCoords(Try);
+
+		if ((Chunk == nullptr) || !Chunk->IsValid() || !Chunk->IsLightValid())
 		{
 			continue;
 		}
 
-		auto newMob = a_MobSpawner.TryToSpawnHere(this, {TryX, TryY, TryZ}, Biome, MaxNbOfSuccess);
+		auto newMob = a_MobSpawner.TryToSpawnHere(this, Try, GetBiomeAt(Try.x, Try.z), MaxNbOfSuccess);
 		if (newMob == nullptr)
 		{
 			continue;
@@ -1190,15 +1193,56 @@ bool cChunk::UnboundedRelFastSetBlock(Vector3i a_RelPos, BLOCKTYPE a_BlockType,
 
 
 
-int cChunk::GetHeight(int a_X, int a_Z)
+int cChunk::GetHeight(int a_X, int a_Z) const
 {
 	ASSERT((a_X >= 0) && (a_X < Width) && (a_Z >= 0) && (a_Z < Width));
+	return m_HeightMap[a_X + a_Z * Width];
+}
+
+
+
+
+
+bool cChunk::IsWeatherSunnyAt(int a_RelX, int a_RelZ) const
+{
+	return m_World->IsWeatherSunny() || IsBiomeNoDownfall(GetBiomeAt(a_RelX, a_RelZ));
+}
+
+
+
+
+
+bool cChunk::IsWeatherWetAt(const int a_RelX, const int a_RelZ) const
+{
+	const auto Biome = GetBiomeAt(a_RelX, a_RelZ);
+	return m_World->IsWeatherWet() && !IsBiomeNoDownfall(Biome) && !IsBiomeCold(Biome);
+}
 
-	if ((a_X >= 0) && (a_X < Width) && (a_Z >= 0) && (a_Z < Width))
+
+
+
+
+bool cChunk::IsWeatherWetAt(const Vector3i a_Position) const
+{
+	if ((a_Position.y < 0) || !IsWeatherWetAt(a_Position.x, a_Position.z))
+	{
+		return false;
+	}
+
+	if (a_Position.y >= cChunkDef::Height)
 	{
-		return m_HeightMap[a_X + a_Z * Width];
+		return true;
 	}
-	return 0;
+
+	for (int y = GetHeight(a_Position.x, a_Position.z); y >= a_Position.y; y--)
+	{
+		if (cBlockInfo::IsRainBlocker(GetBlock({ a_Position.x, y, a_Position.z })))
+		{
+			return false;
+		}
+	}
+
+	return true;
 }
 
 
diff --git a/src/Chunk.h b/src/Chunk.h
index 28f7b0bec..d0283f3e4 100644
--- a/src/Chunk.h
+++ b/src/Chunk.h
@@ -221,7 +221,17 @@ public:
 	/** Sets the sign text. Returns true if successful. Also sends update packets to all clients in the chunk */
 	bool SetSignLines(int a_RelX, int a_RelY, int a_RelZ, const AString & a_Line1, const AString & a_Line2, const AString & a_Line3, const AString & a_Line4);
 
-	int  GetHeight( int a_X, int a_Z);
+	int GetHeight( int a_X, int a_Z) const;
+
+	/** Returns true if it is sunny at the specified location. This takes into account biomes. */
+	bool IsWeatherSunnyAt(int a_RelX, int a_RelZ) const;
+
+	/** Returns true if it is raining or storming at the specified location, taking into account biomes. */
+	bool IsWeatherWetAt(int a_RelX, int a_RelZ) const;
+
+	/** Returns true if it is raining or storming at the specified location,
+	and the rain reaches (the bottom of) the specified block position. */
+	bool IsWeatherWetAt(Vector3i a_Position) const;
 
 	void SendBlockTo(int a_RelX, int a_RelY, int a_RelZ, cClientHandle * a_Client);
 
diff --git a/src/ChunkMap.cpp b/src/ChunkMap.cpp
index f06dd057f..c5798260b 100644
--- a/src/ChunkMap.cpp
+++ b/src/ChunkMap.cpp
@@ -337,6 +337,63 @@ bool cChunkMap::IsChunkQueued(int a_ChunkX, int a_ChunkZ) const
 
 
 
+bool cChunkMap::IsWeatherSunnyAt(int a_BlockX, int a_BlockZ) const
+{
+	int ChunkX, ChunkZ, BlockY = 0;
+	cChunkDef::AbsoluteToRelative(a_BlockX, BlockY, a_BlockZ, ChunkX, ChunkZ);
+
+	cCSLock Lock(m_CSChunks);
+	const auto Chunk = FindChunk(ChunkX, ChunkZ);
+	if ((Chunk == nullptr) || !Chunk->IsValid())
+	{
+		return m_World->IsWeatherSunny();
+	}
+
+	return Chunk->IsWeatherSunnyAt(a_BlockX, a_BlockZ);
+}
+
+
+
+
+
+bool cChunkMap::IsWeatherWetAt(int a_BlockX, int a_BlockZ) const
+{
+	int ChunkX, ChunkZ, BlockY = 0;
+	cChunkDef::AbsoluteToRelative(a_BlockX, BlockY, a_BlockZ, ChunkX, ChunkZ);
+
+	cCSLock Lock(m_CSChunks);
+	const auto Chunk = FindChunk(ChunkX, ChunkZ);
+	if ((Chunk == nullptr) || !Chunk->IsValid())
+	{
+		return m_World->IsWeatherWet();
+	}
+
+	return Chunk->IsWeatherWetAt(a_BlockX, a_BlockZ);
+}
+
+
+
+
+
+bool cChunkMap::IsWeatherWetAt(const Vector3i a_Position) const
+{
+	const auto ChunkPosition = cChunkDef::BlockToChunk(a_Position);
+	const auto Position = cChunkDef::AbsoluteToRelative(a_Position, ChunkPosition);
+
+	cCSLock Lock(m_CSChunks);
+	const auto Chunk = FindChunk(ChunkPosition.m_ChunkX, ChunkPosition.m_ChunkZ);
+	if ((Chunk == nullptr) || !Chunk->IsValid())
+	{
+		return m_World->IsWeatherWet();
+	}
+
+	return Chunk->IsWeatherWetAt(Position);
+}
+
+
+
+
+
 bool cChunkMap::IsChunkValid(int a_ChunkX, int a_ChunkZ) const
 {
 	cCSLock Lock(m_CSChunks);
@@ -647,10 +704,7 @@ EMCSBiome cChunkMap::GetBiomeAt(int a_BlockX, int a_BlockZ) const
 	{
 		return Chunk->GetBiomeAt(X, Z);
 	}
-	else
-	{
-		return m_World->GetGenerator().GetBiomeAt(a_BlockX, a_BlockZ);
-	}
+	return EMCSBiome::biInvalidBiome;
 }
 
 
diff --git a/src/ChunkMap.h b/src/ChunkMap.h
index e40a5d59d..de1f29754 100644
--- a/src/ChunkMap.h
+++ b/src/ChunkMap.h
@@ -5,9 +5,6 @@
 
 #pragma once
 
-
-#include <functional>
-
 #include "ChunkDataCallback.h"
 #include "EffectID.h"
 #include "FunctionRef.h"
@@ -120,6 +117,10 @@ public:
 	/** Returns true iff the chunk is in the loader / generator queue. */
 	bool IsChunkQueued(int a_ChunkX, int a_ChunkZ) const;
 
+	bool IsWeatherSunnyAt(int a_BlockX, int a_BlockZ) const;
+	bool IsWeatherWetAt(int a_BlockX, int a_BlockZ) const;
+	bool IsWeatherWetAt(Vector3i a_Position) const;
+
 	bool      IsChunkValid       (int a_ChunkX, int a_ChunkZ) const;
 	bool      HasChunkAnyClients (int a_ChunkX, int a_ChunkZ) const;
 	int       GetHeight          (int a_BlockX, int a_BlockZ);  // Waits for the chunk to get loaded / generated
@@ -143,15 +144,15 @@ public:
 	Ignored if the chunk is invalid. */
 	void SetBlockMeta(Vector3i a_BlockPos, NIBBLETYPE a_BlockMeta);
 
-	void       SetBlock          (Vector3i a_BlockPos, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta);
-	bool       GetBlockTypeMeta  (Vector3i a_BlockPos, BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta) const;
-	bool       GetBlockInfo      (Vector3i, BLOCKTYPE & a_BlockType, NIBBLETYPE & a_Meta, NIBBLETYPE & a_SkyLight, NIBBLETYPE & a_BlockLight) const;
+	void SetBlock          (Vector3i a_BlockPos, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta);
+	bool GetBlockTypeMeta  (Vector3i a_BlockPos, BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta) const;
+	bool GetBlockInfo      (Vector3i, BLOCKTYPE & a_BlockType, NIBBLETYPE & a_Meta, NIBBLETYPE & a_SkyLight, NIBBLETYPE & a_BlockLight) const;
 
 	/** Special function used for growing trees, replaces only blocks that tree may overwrite */
-	void      ReplaceTreeBlocks(const sSetBlockVector & a_Blocks);
+	void ReplaceTreeBlocks(const sSetBlockVector & a_Blocks);
 
-	/** Returns the biome at the specified coords. Reads the biome from the chunk, if loaded, otherwise uses the world generator to provide the biome value */
-	EMCSBiome GetBiomeAt (int a_BlockX, int a_BlockZ) const;
+	/** Returns the biome at the specified coords. Reads the biome from the chunk, if loaded, invalid otherwise. */
+	EMCSBiome GetBiomeAt(int a_BlockX, int a_BlockZ) const;
 
 	/** Sets the biome at the specified coords. Returns true if successful, false if not (chunk not loaded).
 	Doesn't resend the chunk to clients. */
diff --git a/src/Entities/Entity.cpp b/src/Entities/Entity.cpp
index 438117650..f07eab415 100644
--- a/src/Entities/Entity.cpp
+++ b/src/Entities/Entity.cpp
@@ -1198,8 +1198,8 @@ void cEntity::TickBurning(cChunk & a_Chunk)
 		m_TicksLeftBurning = 0;
 	}
 
-	// Fire is extinguished by rain
-	if (GetWorld()->IsWeatherWetAtXYZ(GetPosition().Floor()))
+	// Fire is extinguished by rain:
+	if (a_Chunk.IsWeatherWetAt(cChunkDef::AbsoluteToRelative(GetPosition().Floor(), a_Chunk.GetPos())))
 	{
 		m_TicksLeftBurning = 0;
 	}
diff --git a/src/Entities/Floater.cpp b/src/Entities/Floater.cpp
index bb326f70b..2738c12d3 100644
--- a/src/Entities/Floater.cpp
+++ b/src/Entities/Floater.cpp
@@ -101,11 +101,16 @@ void cFloater::SpawnOn(cClientHandle & a_Client)
 
 void cFloater::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
-	auto & Random = GetRandomProvider();
-
 	HandlePhysics(a_Dt, a_Chunk);
-	if (IsBlockWater(m_World->GetBlock(POSX_TOINT, POSY_TOINT, POSZ_TOINT))
-		&& (m_World->GetBlockMeta(POSX_TOINT, POSY_TOINT, POSZ_TOINT) == 0))
+
+	PREPARE_REL_AND_CHUNK(GetPosition().Floor(), a_Chunk);
+	if (!RelSuccess)
+	{
+		return;
+	}
+
+	auto & Random = GetRandomProvider();
+	if (IsBlockWater(Chunk->GetBlock(Rel)) && (Chunk->GetMeta(Rel) == 0))
 	{
 		if (!m_CanPickupItem && (m_AttachedMobID == cEntity::INVALID_ID))  // Check if you can't already pickup a fish and if the floater isn't attached to a mob.
 		{
@@ -113,7 +118,7 @@ void cFloater::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 			{
 				m_BitePos = GetPosition();
 				m_World->BroadcastSoundEffect("entity.bobber.splash", GetPosition(), 1, 1);
-				SetPosY(GetPosY() - 1);
+				AddSpeedY(-10);
 				m_CanPickupItem = true;
 				m_PickupCountDown = 20;
 				m_CountDownTime = Random.RandInt(100, 900);
@@ -132,9 +137,9 @@ void cFloater::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 			}
 
 			m_CountDownTime--;
-			if (m_World->GetHeight(POSX_TOINT, POSZ_TOINT) == POSY_TOINT)
+			if (Chunk->IsWeatherWetAt(Rel))
 			{
-				if (m_World->IsWeatherWet() && Random.RandBool(0.25))  // 25% chance of an extra countdown when being rained on.
+				if (Random.RandBool(0.25))  // 25% chance of an extra countdown when being rained on.
 				{
 					m_CountDownTime--;
 				}
@@ -150,7 +155,10 @@ void cFloater::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 	}
 
 	// Check water at the top of floater otherwise it floats into the air above the water
-	if (IsBlockWater(m_World->GetBlock(POSX_TOINT, FloorC(GetPosY() + GetHeight()), POSZ_TOINT)))
+	if (
+		const auto Above = Rel.addedY(FloorC(GetPosY() + GetHeight()));
+		(Above.y < cChunkDef::Height) && IsBlockWater(m_World->GetBlock(Above))
+	)
 	{
 		SetSpeedY(0.7);
 	}
diff --git a/src/MobSpawner.cpp b/src/MobSpawner.cpp
index b83cd247d..c04467fd3 100644
--- a/src/MobSpawner.cpp
+++ b/src/MobSpawner.cpp
@@ -74,10 +74,6 @@ eMonsterType cMobSpawner::ChooseMobType(EMCSBiome a_Biome)
 
 bool cMobSpawner::CanSpawnHere(cChunk * a_Chunk, Vector3i a_RelPos, eMonsterType a_MobType, EMCSBiome a_Biome, bool a_DisableSolidBelowCheck)
 {
-	if (a_Chunk == nullptr)
-	{
-		return false;
-	}
 	if ((a_RelPos.y >= cChunkDef::Height - 1) || (a_RelPos.y <= 0))
 	{
 		return false;
@@ -502,9 +498,6 @@ cMonster * cMobSpawner::TryToSpawnHere(cChunk * a_Chunk, Vector3i a_RelPos, EMCS
 		m_NewPack = false;
 	}
 
-	// Make sure we are looking at the right chunk to spawn in
-	a_Chunk = a_Chunk->GetRelNeighborChunkAdjustCoords(a_RelPos);
-
 	if ((m_AllowedTypes.find(m_MobType) != m_AllowedTypes.end()) && CanSpawnHere(a_Chunk, a_RelPos, m_MobType, a_Biome))
 	{
 		auto NewMob = cMonster::NewMonsterFromType(m_MobType);
diff --git a/src/Mobs/Enderman.cpp b/src/Mobs/Enderman.cpp
index 02450487b..a107762c6 100644
--- a/src/Mobs/Enderman.cpp
+++ b/src/Mobs/Enderman.cpp
@@ -1,6 +1,7 @@
 
 #include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
 
+#include "Chunk.h"
 #include "Enderman.h"
 #include "../Entities/Player.h"
 #include "../LineBlockTracer.h"
@@ -148,11 +149,14 @@ void cEnderman::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 		return;
 	}
 
-	// Take damage when wet
-	if (
-		cChunkDef::IsValidHeight(POSY_TOINT) &&
-		(GetWorld()->IsWeatherWetAtXYZ(GetPosition().Floor()) || IsInWater())
-	)
+	PREPARE_REL_AND_CHUNK(GetPosition().Floor(), a_Chunk);
+	if (!RelSuccess)
+	{
+		return;
+	}
+
+	// Take damage when wet:
+	if (IsInWater() || Chunk->IsWeatherWetAt(Rel))
 	{
 		EventLosePlayer();
 		TakeDamage(dtEnvironment, nullptr, 1, 0);
diff --git a/src/Mobs/Monster.cpp b/src/Mobs/Monster.cpp
index 7e8e7eba3..52b3f8454 100644
--- a/src/Mobs/Monster.cpp
+++ b/src/Mobs/Monster.cpp
@@ -1667,10 +1667,10 @@ bool cMonster::WouldBurnAt(Vector3d a_Location, cChunk & a_Chunk)
 	}
 
 	if (
-		(Chunk->GetBlock(Rel.x, Rel.y, Rel.z) != E_BLOCK_SOULSAND) &&  // Not on soulsand
-		(GetWorld()->GetTimeOfDay() < 12000 + 1000) &&              // Daytime
-		GetWorld()->IsWeatherSunnyAt(POSX_TOINT, POSZ_TOINT) &&     // Not raining
-		!IsInWater()                                                // Isn't swimming
+		(Chunk->GetBlock(Rel) != E_BLOCK_SOULSAND) &&   // Not on soulsand
+		(GetWorld()->GetTimeOfDay() < 12000 + 1000) &&  // Daytime
+		Chunk->IsWeatherSunnyAt(Rel.x, Rel.z) &&        // Not raining
+		!IsInWater()                                    // Isn't swimming
 	)
 	{
 		int MobHeight = CeilC(a_Location.y + GetHeight()) - 1;  // The block Y coord of the mob's head
diff --git a/src/Mobs/SnowGolem.cpp b/src/Mobs/SnowGolem.cpp
index 93c29cafb..c6db0cbd1 100644
--- a/src/Mobs/SnowGolem.cpp
+++ b/src/Mobs/SnowGolem.cpp
@@ -1,6 +1,7 @@
 
 #include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
 
+#include "Chunk.h"
 #include "SnowGolem.h"
 #include "../BlockInfo.h"
 #include "../World.h"
@@ -36,17 +37,22 @@ void cSnowGolem::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 		// The base class tick destroyed us
 		return;
 	}
-	if (IsBiomeNoDownfall(m_World->GetBiomeAt(POSX_TOINT, POSZ_TOINT)))
+
+	PREPARE_REL_AND_CHUNK(GetPosition().Floor(), a_Chunk);
+	if (!RelSuccess)
+	{
+		return;
+	}
+
+	if (IsBiomeNoDownfall(Chunk->GetBiomeAt(Rel.x, Rel.z)))
 	{
 		TakeDamage(dtEnvironment, nullptr, GetRawDamageAgainst(*this), GetKnockbackAmountAgainst(*this));
 	}
-	else
+	else if (const auto Below = Rel.addedY(-1); Below.y >= 0)
 	{
-		BLOCKTYPE BlockBelow = m_World->GetBlock(POSX_TOINT, POSY_TOINT - 1, POSZ_TOINT);
-		BLOCKTYPE Block = m_World->GetBlock(POSX_TOINT, POSY_TOINT, POSZ_TOINT);
-		if ((Block == E_BLOCK_AIR) && cBlockInfo::IsSolid(BlockBelow))
+		if ((Chunk->GetBlock(Rel) == E_BLOCK_AIR) && cBlockInfo::IsSolid(Chunk->GetBlock(Below)))
 		{
-			m_World->SetBlock(POSX_TOINT, POSY_TOINT, POSZ_TOINT, E_BLOCK_SNOW, 0);
+			Chunk->SetBlock(Rel, E_BLOCK_SNOW, 0);
 		}
 	}
 }
diff --git a/src/Simulator/FireSimulator.cpp b/src/Simulator/FireSimulator.cpp
index 30fe88acd..67a00f241 100644
--- a/src/Simulator/FireSimulator.cpp
+++ b/src/Simulator/FireSimulator.cpp
@@ -87,7 +87,6 @@ void cFireSimulator::SimulateChunk(std::chrono::milliseconds a_Dt, int a_ChunkX,
 	for (cCoordWithIntList::iterator itr = Data.begin(); itr != Data.end();)
 	{
 		Vector3i relPos(itr->x, itr->y, itr->z);
-		auto absPos = a_Chunk->RelativeToAbsolute(relPos);
 		auto blockType = a_Chunk->GetBlock(relPos);
 
 		if (!IsAllowedBlock(blockType))
@@ -101,12 +100,16 @@ void cFireSimulator::SimulateChunk(std::chrono::milliseconds a_Dt, int a_ChunkX,
 		auto BurnsForever = ((relPos.y > 0) && DoesBurnForever(a_Chunk->GetBlock(relPos.addedY(-1))));
 		auto BlockMeta = a_Chunk->GetMeta(relPos);
 
-		auto Raining = std::any_of(std::begin(gCrossCoords), std::end(gCrossCoords),
-			[this, absPos](Vector3i cc)
+		auto Raining = std::any_of(std::begin(gCrossCoords), std::end(gCrossCoords), [a_Chunk, relPos](Vector3i cc)
+		{
+			auto Adjusted = relPos + cc;
+			const auto Chunk = a_Chunk->GetRelNeighborChunkAdjustCoords(Adjusted);
+			if ((Chunk != nullptr) && Chunk->IsValid())
 			{
-				return (m_World.IsWeatherWetAtXYZ(absPos + cc));
+				return Chunk->IsWeatherWetAt(Adjusted);
 			}
-		);
+			return false;
+		});
 
 		// Randomly burn out the fire if it is raining:
 		if (!BurnsForever && Raining && GetRandomProvider().RandBool(CHANCE_BASE_RAIN_EXTINGUISH + (BlockMeta * CHANCE_AGE_M_RAIN_EXTINGUISH)))
diff --git a/src/World.cpp b/src/World.cpp
index 46d08ab44..6b224b634 100644
--- a/src/World.cpp
+++ b/src/World.cpp
@@ -548,28 +548,27 @@ void cWorld::ChangeWeather(void)
 
 
 
-bool cWorld::IsWeatherWetAtXYZ(Vector3i a_Pos)
+bool cWorld::IsWeatherSunnyAt(int a_BlockX, int a_BlockZ) const
 {
-	if ((a_Pos.y < 0) || !IsWeatherWetAt(a_Pos.x, a_Pos.z))
-	{
-		return false;
-	}
+	return m_ChunkMap.IsWeatherSunnyAt(a_BlockX, a_BlockZ);
+}
 
-	if (a_Pos.y >= cChunkDef::Height)
-	{
-		return true;
-	}
 
-	for (int y = GetHeight(a_Pos.x, a_Pos.z); y >= a_Pos.y; y--)
-	{
-		auto BlockType = GetBlock({a_Pos.x, y, a_Pos.z});
-		if (cBlockInfo::IsRainBlocker(BlockType))
-		{
-			return false;
-		}
-	}
 
-	return true;
+
+
+bool cWorld::IsWeatherWetAt(int a_BlockX, int a_BlockZ)
+{
+	return m_ChunkMap.IsWeatherWetAt(a_BlockX, a_BlockZ);
+}
+
+
+
+
+
+bool cWorld::IsWeatherWetAtXYZ(const Vector3i a_Position)
+{
+	return m_ChunkMap.IsWeatherWetAt(a_Position);
 }
 
 
diff --git a/src/World.h b/src/World.h
index b0ffc2b07..ba4e5ee58 100644
--- a/src/World.h
+++ b/src/World.h
@@ -999,10 +999,7 @@ public:
 	bool IsWeatherSunny(void) const { return (m_Weather == wSunny); }
 
 	/** Returns true if it is sunny at the specified location. This takes into account biomes. */
-	bool IsWeatherSunnyAt(int a_BlockX, int a_BlockZ)
-	{
-		return (IsWeatherSunny() || IsBiomeNoDownfall(GetBiomeAt(a_BlockX, a_BlockZ)));
-	}
+	bool IsWeatherSunnyAt(int a_BlockX, int a_BlockZ) const;
 
 	/** Returns true if the current weather is rainy. */
 	bool IsWeatherRain(void) const { return (m_Weather == wRain); }
@@ -1027,15 +1024,11 @@ public:
 
 	/** Returns true if it is raining or storming at the specified location.
 	This takes into account biomes. */
-	virtual bool IsWeatherWetAt(int a_BlockX, int a_BlockZ) override
-	{
-		auto Biome = GetBiomeAt(a_BlockX, a_BlockZ);
-		return (IsWeatherWet() && !IsBiomeNoDownfall(Biome) && !IsBiomeCold(Biome));
-	}
+	virtual bool IsWeatherWetAt(int a_BlockX, int a_BlockZ) override;
 
 	/** Returns true if it is raining or storming at the specified location,
 	and the rain reaches (the bottom of) the specified block position. */
-	virtual bool IsWeatherWetAtXYZ(Vector3i a_Pos) override;
+	virtual bool IsWeatherWetAtXYZ(Vector3i a_Position) override;
 
 	/** Returns the seed of the world. */
 	int GetSeed(void) { return m_Generator.GetSeed(); }