38 files changed, 69 insertions, 69 deletions

diff --git a/src/Entities/ArrowEntity.cpp b/src/Entities/ArrowEntity.cpp
index 30f18f677..2ec825ddb 100644
--- a/src/Entities/ArrowEntity.cpp
+++ b/src/Entities/ArrowEntity.cpp
@@ -174,10 +174,10 @@ void cArrowEntity::CollectedBy(cPlayer & a_Dest)
 
 
 
-void cArrowEntity::Tick(float a_Dt, cChunk & a_Chunk)
+void cArrowEntity::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	super::Tick(a_Dt, a_Chunk);
-	m_Timer += a_Dt;
+	m_Timer += a_Dt.count();
 	
 	if (m_bIsCollected)
 	{
@@ -209,7 +209,7 @@ void cArrowEntity::Tick(float a_Dt, cChunk & a_Chunk)
 			}
 			else
 			{
-				m_HitGroundTimer += a_Dt;
+				m_HitGroundTimer += a_Dt.count();
 			}
 		}
 		
diff --git a/src/Entities/ArrowEntity.h b/src/Entities/ArrowEntity.h
index 436ec0293..8c92049b0 100644
--- a/src/Entities/ArrowEntity.h
+++ b/src/Entities/ArrowEntity.h
@@ -103,6 +103,6 @@ protected:
 	virtual void OnHitSolidBlock(const Vector3d & a_HitPos, eBlockFace a_HitFace) override;
 	virtual void OnHitEntity(cEntity & a_EntityHit, const Vector3d & a_HitPos) override;
 	virtual void CollectedBy(cPlayer & a_Player) override;
-	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 	
 };  // tolua_export
diff --git a/src/Entities/Boat.cpp b/src/Entities/Boat.cpp
index 953213bca..6d8b4ef31 100644
--- a/src/Entities/Boat.cpp
+++ b/src/Entities/Boat.cpp
@@ -91,7 +91,7 @@ void cBoat::OnRightClicked(cPlayer & a_Player)
 
 
 
-void cBoat::Tick(float a_Dt, cChunk & a_Chunk)
+void cBoat::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	super::Tick(a_Dt, a_Chunk);
 	BroadcastMovementUpdate();
diff --git a/src/Entities/Boat.h b/src/Entities/Boat.h
index 8de88d165..a873ff822 100644
--- a/src/Entities/Boat.h
+++ b/src/Entities/Boat.h
@@ -27,7 +27,7 @@ public:
 	virtual void SpawnOn(cClientHandle & a_ClientHandle) override;
 	virtual void OnRightClicked(cPlayer & a_Player) override;
 	virtual bool DoTakeDamage(TakeDamageInfo & TDI) override;
-	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 	virtual void HandleSpeedFromAttachee(float a_Forward, float a_Sideways) override;
 	
 	cBoat(double a_X, double a_Y, double a_Z);
diff --git a/src/Entities/EnderCrystal.cpp b/src/Entities/EnderCrystal.cpp
index 30df2c110..7a911d4db 100644
--- a/src/Entities/EnderCrystal.cpp
+++ b/src/Entities/EnderCrystal.cpp
@@ -29,7 +29,7 @@ void cEnderCrystal::SpawnOn(cClientHandle & a_ClientHandle)
 
 
 
-void cEnderCrystal::Tick(float a_Dt, cChunk & a_Chunk)
+void cEnderCrystal::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	UNUSED(a_Dt);
 	// No further processing (physics e.t.c.) is needed
diff --git a/src/Entities/EnderCrystal.h b/src/Entities/EnderCrystal.h
index c98c3b681..8f7e2e9b9 100644
--- a/src/Entities/EnderCrystal.h
+++ b/src/Entities/EnderCrystal.h
@@ -23,7 +23,7 @@ private:
 
 	// cEntity overrides:
 	virtual void SpawnOn(cClientHandle & a_ClientHandle) override;
-	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 	virtual void KilledBy(TakeDamageInfo & a_TDI) override;
 
 };  // tolua_export
diff --git a/src/Entities/Entity.cpp b/src/Entities/Entity.cpp
index 54b9f2a20..c64d94528 100644
--- a/src/Entities/Entity.cpp
+++ b/src/Entities/Entity.cpp
@@ -772,7 +772,7 @@ void cEntity::SetHealth(int a_Health)
 
 
 
-void cEntity::Tick(float a_Dt, cChunk & a_Chunk)
+void cEntity::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	m_TicksAlive++;
 	
@@ -841,7 +841,7 @@ void cEntity::Tick(float a_Dt, cChunk & a_Chunk)
 
 
 
-void cEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk)
+void cEntity::HandlePhysics(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	int BlockX = POSX_TOINT;
 	int BlockY = POSY_TOINT;
@@ -851,15 +851,15 @@ void cEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk)
 	GET_AND_VERIFY_CURRENT_CHUNK(NextChunk, BlockX, BlockZ)
 
 	// TODO Add collision detection with entities.
-	a_Dt /= 1000;  // Convert from msec to sec
+	auto DtSec = std::chrono::duration_cast<std::chrono::duration<double>>(a_Dt);
 	Vector3d NextPos = Vector3d(GetPosX(), GetPosY(), GetPosZ());
 	Vector3d NextSpeed = Vector3d(GetSpeedX(), GetSpeedY(), GetSpeedZ());
 	
 	if ((BlockY >= cChunkDef::Height) || (BlockY < 0))
 	{
 		// Outside of the world
-		AddSpeedY(m_Gravity * a_Dt);
-		AddPosition(GetSpeed() * a_Dt);
+		AddSpeedY(m_Gravity * DtSec.count());
+		AddPosition(GetSpeed() * DtSec.count());
 		return;
 	}
 	
@@ -930,8 +930,8 @@ void cEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk)
 		float fallspeed;
 		if (IsBlockWater(BlockIn))
 		{
-			fallspeed = m_Gravity * a_Dt / 3;  // Fall 3x slower in water
-			ApplyFriction(NextSpeed, 0.7, a_Dt);
+			fallspeed = m_Gravity * DtSec.count() / 3;  // Fall 3x slower in water
+			ApplyFriction(NextSpeed, 0.7, DtSec.count());
 		}
 		else if (BlockIn == E_BLOCK_COBWEB)
 		{
@@ -941,13 +941,13 @@ void cEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk)
 		else
 		{
 			// Normal gravity
-			fallspeed = m_Gravity * a_Dt;
+			fallspeed = m_Gravity * DtSec.count();
 		}
 		NextSpeed.y += fallspeed;
 	}
 	else
 	{
-		ApplyFriction(NextSpeed, 0.7, a_Dt);
+		ApplyFriction(NextSpeed, 0.7, DtSec.count());
 	}
 
 	// Adjust X and Z speed for COBWEB temporary. This speed modification should be handled inside block handlers since we
@@ -1002,14 +1002,14 @@ void cEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk)
 	{
 		cTracer Tracer(GetWorld());
 		// Distance traced is an integer, so we round up from the distance we should go (Speed * Delta), else we will encounter collision detection failurse
-		int DistanceToTrace = (int)(ceil((NextSpeed * a_Dt).SqrLength()) * 2);
+		int DistanceToTrace = (int)(ceil((NextSpeed * DtSec.count()).SqrLength()) * 2);
 		bool HasHit = Tracer.Trace(NextPos, NextSpeed, DistanceToTrace);
 
 		if (HasHit)
 		{
 			// Oh noez! We hit something: verify that the (hit position - current) was smaller or equal to the (position that we should travel without obstacles - current)
 			// This is because previously, we traced with a length that was rounded up (due to integer limitations), and in the case that something was hit, we don't want to overshoot our projected movement
-			if ((Tracer.RealHit - NextPos).SqrLength() <= (NextSpeed * a_Dt).SqrLength())
+			if ((Tracer.RealHit - NextPos).SqrLength() <= (NextSpeed * DtSec.count()).SqrLength())
 			{
 				// Block hit was within our projected path
 				// Begin by stopping movement in the direction that we hit something. The Normal is the line perpendicular to a 2D face and in this case, stores what block face was hit through either -1 or 1.
@@ -1044,13 +1044,13 @@ void cEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk)
 				// and that this piece of software will come to be hailed as the epitome of performance and functionality in C++, never before seen, and of such a like that will never
 				// be henceforth seen again in the time of programmers and man alike
 				// </&sensationalist>
-				NextPos += (NextSpeed * a_Dt);
+				NextPos += (NextSpeed * DtSec.count());
 			}
 		}
 		else
 		{
 			// We didn't hit anything, so move =]
-			NextPos += (NextSpeed * a_Dt);
+			NextPos += (NextSpeed * DtSec.count());
 		}
 	}
 
diff --git a/src/Entities/Entity.h b/src/Entities/Entity.h
index af545fe4a..de9b88dfb 100644
--- a/src/Entities/Entity.h
+++ b/src/Entities/Entity.h
@@ -326,10 +326,10 @@ public:
 	
 	// tolua_end
 
-	virtual void Tick(float a_Dt, cChunk & a_Chunk);
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk);
 	
 	/// Handles the physics of the entity - updates position based on speed, updates speed based on environment
-	virtual void HandlePhysics(float a_Dt, cChunk & a_Chunk);
+	virtual void HandlePhysics(std::chrono::milliseconds a_Dt, cChunk & a_Chunk);
 	
 	/// Updates the state related to this entity being on fire
 	virtual void TickBurning(cChunk & a_Chunk);
diff --git a/src/Entities/ExpOrb.cpp b/src/Entities/ExpOrb.cpp
index 751308661..9767f96ca 100644
--- a/src/Entities/ExpOrb.cpp
+++ b/src/Entities/ExpOrb.cpp
@@ -42,7 +42,7 @@ void cExpOrb::SpawnOn(cClientHandle & a_Client)
 
 
 
-void cExpOrb::Tick(float a_Dt, cChunk & a_Chunk)
+void cExpOrb::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	cPlayer * a_ClosestPlayer(m_World->FindClosestPlayer(Vector3f(GetPosition()), 5));
 	if (a_ClosestPlayer != nullptr)
@@ -69,7 +69,7 @@ void cExpOrb::Tick(float a_Dt, cChunk & a_Chunk)
 	}
 	HandlePhysics(a_Dt, a_Chunk);
 	
-	m_Timer += a_Dt;
+	m_Timer += a_Dt.count();
 	if (m_Timer >= 1000 * 60 * 5)  // 5 minutes
 	{
 		Destroy(true);
diff --git a/src/Entities/ExpOrb.h b/src/Entities/ExpOrb.h
index bdb9a5b19..e12e3c504 100644
--- a/src/Entities/ExpOrb.h
+++ b/src/Entities/ExpOrb.h
@@ -22,7 +22,7 @@ public:
 	cExpOrb(const Vector3d & a_Pos, int a_Reward);
 
 	// Override functions
-	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 	virtual void SpawnOn(cClientHandle & a_Client) override;
 
 	/** Returns the number of ticks that this entity has existed */
diff --git a/src/Entities/FallingBlock.cpp b/src/Entities/FallingBlock.cpp
index 111c5fa84..75105a0cd 100644
--- a/src/Entities/FallingBlock.cpp
+++ b/src/Entities/FallingBlock.cpp
@@ -31,7 +31,7 @@ void cFallingBlock::SpawnOn(cClientHandle & a_ClientHandle)
 
 
 
-void cFallingBlock::Tick(float a_Dt, cChunk & a_Chunk)
+void cFallingBlock::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	// GetWorld()->BroadcastTeleportEntity(*this);  // Test position
 	
@@ -82,7 +82,7 @@ void cFallingBlock::Tick(float a_Dt, cChunk & a_Chunk)
 		return;
 	}
 	
-	float MilliDt = a_Dt * 0.001f;
+	float MilliDt = a_Dt.count() * 0.001f;
 	AddSpeedY(MilliDt * -9.8f);
 	AddPosition(GetSpeed() * MilliDt);
 
diff --git a/src/Entities/FallingBlock.h b/src/Entities/FallingBlock.h
index c20fe8eb9..884938f4d 100644
--- a/src/Entities/FallingBlock.h
+++ b/src/Entities/FallingBlock.h
@@ -30,7 +30,7 @@ public:
 	
 	// cEntity overrides:
 	virtual void SpawnOn(cClientHandle & a_ClientHandle) override;
-	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 	
 private:
 	BLOCKTYPE  m_BlockType;
diff --git a/src/Entities/FireworkEntity.cpp b/src/Entities/FireworkEntity.cpp
index 68d02640a..9dc7850a7 100644
--- a/src/Entities/FireworkEntity.cpp
+++ b/src/Entities/FireworkEntity.cpp
@@ -19,7 +19,7 @@ cFireworkEntity::cFireworkEntity(cEntity * a_Creator, double a_X, double a_Y, do
 
 
 
-void cFireworkEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk)
+void cFireworkEntity::HandlePhysics(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	int RelX = POSX_TOINT - a_Chunk.GetPosX() * cChunkDef::Width;
 	int RelZ = POSZ_TOINT - a_Chunk.GetPosZ() * cChunkDef::Width;
@@ -28,7 +28,7 @@ void cFireworkEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk)
 	if ((PosY < 0) || (PosY >= cChunkDef::Height))
 	{
 		AddSpeedY(1);
-		AddPosition(GetSpeed() * (a_Dt / 1000));
+		AddPosition(GetSpeed() * (a_Dt.count() / 1000));
 		return;
 	}
 	
@@ -53,14 +53,14 @@ void cFireworkEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk)
 	}
 	
 	AddSpeedY(1);
-	AddPosition(GetSpeed() * (a_Dt / 1000));
+	AddPosition(GetSpeed() * (a_Dt.count() / 1000));
 }
 
 
 
 
 
-void cFireworkEntity::Tick(float a_Dt, cChunk & a_Chunk)
+void cFireworkEntity::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	super::Tick(a_Dt, a_Chunk);
 	
diff --git a/src/Entities/FireworkEntity.h b/src/Entities/FireworkEntity.h
index 300ec571e..c0a38a943 100644
--- a/src/Entities/FireworkEntity.h
+++ b/src/Entities/FireworkEntity.h
@@ -49,8 +49,8 @@ public:
 protected:
 	
 	// cProjectileEntity overrides:
-	virtual void HandlePhysics(float a_Dt, cChunk & a_Chunk) override;
-	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
+	virtual void HandlePhysics(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 	
 private:
 	
diff --git a/src/Entities/Floater.cpp b/src/Entities/Floater.cpp
index 5fe6a1238..cf8dd6c6f 100644
--- a/src/Entities/Floater.cpp
+++ b/src/Entities/Floater.cpp
@@ -125,7 +125,7 @@ void cFloater::SpawnOn(cClientHandle & a_Client)
 
 
 
-void cFloater::Tick(float a_Dt, cChunk & a_Chunk)
+void cFloater::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	HandlePhysics(a_Dt, a_Chunk);
 	if (IsBlockWater(m_World->GetBlock((int) GetPosX(), (int) GetPosY(), (int) GetPosZ())) && m_World->GetBlockMeta((int) GetPosX(), (int) GetPosY(), (int) GetPosZ()) == 0)
diff --git a/src/Entities/Floater.h b/src/Entities/Floater.h
index 96d77ac82..d5715f89e 100644
--- a/src/Entities/Floater.h
+++ b/src/Entities/Floater.h
@@ -21,7 +21,7 @@ public:
 	cFloater(double a_X, double a_Y, double a_Z, Vector3d a_Speed, int a_PlayerID, int a_CountDownTime);
 
 	virtual void SpawnOn(cClientHandle & a_Client) override;
-	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 	
 	// tolua_begin
 	bool CanPickup(void)       const { return m_CanPickupItem; }
diff --git a/src/Entities/HangingEntity.h b/src/Entities/HangingEntity.h
index 67146a20b..d1ef79a68 100644
--- a/src/Entities/HangingEntity.h
+++ b/src/Entities/HangingEntity.h
@@ -43,7 +43,7 @@ public:
 private:
 
 	virtual void SpawnOn(cClientHandle & a_ClientHandle) override;
-	virtual void Tick(float a_Dt, cChunk & a_Chunk) override {}
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override {}
 
 	eBlockFace m_Facing;
 
diff --git a/src/Entities/Minecart.cpp b/src/Entities/Minecart.cpp
index fac4f0714..552d70de7 100644
--- a/src/Entities/Minecart.cpp
+++ b/src/Entities/Minecart.cpp
@@ -111,7 +111,7 @@ void cMinecart::SpawnOn(cClientHandle & a_ClientHandle)
 
 
 
-void cMinecart::HandlePhysics(float a_Dt, cChunk & a_Chunk)
+void cMinecart::HandlePhysics(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	if (IsDestroyed())  // Mainly to stop detector rails triggering again after minecart is dead
 	{
@@ -165,19 +165,19 @@ void cMinecart::HandlePhysics(float a_Dt, cChunk & a_Chunk)
 
 		switch (InsideType)
 		{
-			case E_BLOCK_RAIL: HandleRailPhysics(InsideMeta, a_Dt); break;
+			case E_BLOCK_RAIL: HandleRailPhysics(InsideMeta, a_Dt.count()); break;
 			case E_BLOCK_ACTIVATOR_RAIL: break;
 			case E_BLOCK_POWERED_RAIL: HandlePoweredRailPhysics(InsideMeta); break;
 			case E_BLOCK_DETECTOR_RAIL:
 			{
-				HandleDetectorRailPhysics(InsideMeta, a_Dt);
+				HandleDetectorRailPhysics(InsideMeta, a_Dt.count());
 				WasDetectorRail = true;
 				break;
 			}
 			default: VERIFY(!"Unhandled rail type despite checking if block was rail!"); break;
 		}
 
-		AddPosition(GetSpeed() * (a_Dt / 1000));  // Commit changes; as we use our own engine when on rails, this needs to be done, whereas it is normally in Entity.cpp
+		AddPosition(GetSpeed() * (a_Dt.count() / 1000));  // Commit changes; as we use our own engine when on rails, this needs to be done, whereas it is normally in Entity.cpp
 	}
 	else
 	{
@@ -1213,7 +1213,7 @@ void cMinecartWithFurnace::OnRightClicked(cPlayer & a_Player)
 
 
 
-void cMinecartWithFurnace::Tick(float a_Dt, cChunk & a_Chunk)
+void cMinecartWithFurnace::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	super::Tick(a_Dt, a_Chunk);
 
diff --git a/src/Entities/Minecart.h b/src/Entities/Minecart.h
index f7d0d5dda..1c6f4a6c4 100644
--- a/src/Entities/Minecart.h
+++ b/src/Entities/Minecart.h
@@ -38,7 +38,7 @@ public:
 	
 	// cEntity overrides:
 	virtual void SpawnOn(cClientHandle & a_ClientHandle) override;
-	virtual void HandlePhysics(float a_Dt, cChunk & a_Chunk) override;
+	virtual void HandlePhysics(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 	virtual bool DoTakeDamage(TakeDamageInfo & TDI) override;
 	virtual void Destroyed() override;
 	
@@ -171,7 +171,7 @@ public:
 	
 	// cEntity overrides:
 	virtual void OnRightClicked(cPlayer & a_Player) override;
-	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 
 	// Set functions.
 	void SetIsFueled(bool a_IsFueled, int a_FueledTimeLeft = -1) {m_IsFueled = a_IsFueled; m_FueledTimeLeft = a_FueledTimeLeft;}
diff --git a/src/Entities/Painting.cpp b/src/Entities/Painting.cpp
index 1aa6da0a1..6f6277f28 100644
--- a/src/Entities/Painting.cpp
+++ b/src/Entities/Painting.cpp
@@ -31,7 +31,7 @@ void cPainting::SpawnOn(cClientHandle & a_Client)
 
 
 
-void cPainting::Tick(float a_Dt, cChunk & a_Chunk)
+void cPainting::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	UNUSED(a_Dt);
 	UNUSED(a_Chunk);
diff --git a/src/Entities/Painting.h b/src/Entities/Painting.h
index 078270b42..6e8a382fc 100644
--- a/src/Entities/Painting.h
+++ b/src/Entities/Painting.h
@@ -31,7 +31,7 @@ public:
 private:
 
 	virtual void SpawnOn(cClientHandle & a_Client) override;
-	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 	virtual void GetDrops(cItems & a_Items, cEntity * a_Killer) override;
 	virtual void KilledBy(TakeDamageInfo & a_TDI) override
 	{
diff --git a/src/Entities/Pawn.cpp b/src/Entities/Pawn.cpp
index fc8ca3d47..baf8a2f3b 100644
--- a/src/Entities/Pawn.cpp
+++ b/src/Entities/Pawn.cpp
@@ -19,7 +19,7 @@ cPawn::cPawn(eEntityType a_EntityType, double a_Width, double a_Height) :
 
 
 
-void cPawn::Tick(float a_Dt, cChunk & a_Chunk)
+void cPawn::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	// Iterate through this entity's applied effects
 	for (tEffectMap::iterator iter = m_EntityEffects.begin(); iter != m_EntityEffects.end();)
diff --git a/src/Entities/Pawn.h b/src/Entities/Pawn.h
index d50bcd8af..e3e99651d 100644
--- a/src/Entities/Pawn.h
+++ b/src/Entities/Pawn.h
@@ -20,7 +20,7 @@ public:
 
 	cPawn(eEntityType a_EntityType, double a_Width, double a_Height);
 	
-	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 	virtual void KilledBy(TakeDamageInfo & a_TDI) override;
 	
 	// tolua_begin
diff --git a/src/Entities/Pickup.cpp b/src/Entities/Pickup.cpp
index e5e28446d..accb42a63 100644
--- a/src/Entities/Pickup.cpp
+++ b/src/Entities/Pickup.cpp
@@ -110,12 +110,12 @@ void cPickup::SpawnOn(cClientHandle & a_Client)
 
 
 
-void cPickup::Tick(float a_Dt, cChunk & a_Chunk)
+void cPickup::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	super::Tick(a_Dt, a_Chunk);
 	BroadcastMovementUpdate();  // Notify clients of position
 
-	m_Timer += a_Dt;
+	m_Timer += a_Dt.count();
 	
 	if (!m_bCollected)
 	{
@@ -142,7 +142,7 @@ void cPickup::Tick(float a_Dt, cChunk & a_Chunk)
 			{
 				m_bCollected = true;
 				m_Timer = 0;  // We have to reset the timer.
-				m_Timer += a_Dt;  // In case we have to destroy the pickup in the same tick.
+				m_Timer += a_Dt.count();  // In case we have to destroy the pickup in the same tick.
 				if (m_Timer > 500.f)
 				{
 					Destroy(true);
diff --git a/src/Entities/Pickup.h b/src/Entities/Pickup.h
index d1176a7cf..67f2756ca 100644
--- a/src/Entities/Pickup.h
+++ b/src/Entities/Pickup.h
@@ -34,7 +34,7 @@ public:
 
 	bool CollectedBy(cPlayer & a_Dest);  // tolua_export
 
-	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 
 	/** Returns the number of ticks that this entity has existed */
 	int GetAge(void) const { return static_cast<int>(m_Timer / 50); }     // tolua_export
diff --git a/src/Entities/Player.cpp b/src/Entities/Player.cpp
index 1d5cc6554..1ca131375 100644
--- a/src/Entities/Player.cpp
+++ b/src/Entities/Player.cpp
@@ -191,7 +191,7 @@ void cPlayer::SpawnOn(cClientHandle & a_Client)
 
 
 
-void cPlayer::Tick(float a_Dt, cChunk & a_Chunk)
+void cPlayer::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	if (m_ClientHandle != nullptr)
 	{
diff --git a/src/Entities/Player.h b/src/Entities/Player.h
index b94d2659e..d3ed46db6 100644
--- a/src/Entities/Player.h
+++ b/src/Entities/Player.h
@@ -46,9 +46,9 @@ public:
 
 	virtual void SpawnOn(cClientHandle & a_Client) override;
 	
-	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 
-	virtual void HandlePhysics(float a_Dt, cChunk &) override { UNUSED(a_Dt); }
+	virtual void HandlePhysics(std::chrono::milliseconds a_Dt, cChunk &) override { UNUSED(a_Dt); }
 
 	/** Returns the curently equipped weapon; empty item if none */
 	virtual cItem GetEquippedWeapon(void) const override { return m_Inventory.GetEquippedItem(); }
diff --git a/src/Entities/ProjectileEntity.cpp b/src/Entities/ProjectileEntity.cpp
index 1768714f8..4f20bfae6 100644
--- a/src/Entities/ProjectileEntity.cpp
+++ b/src/Entities/ProjectileEntity.cpp
@@ -331,7 +331,7 @@ AString cProjectileEntity::GetMCAClassName(void) const
 
 
 
-void cProjectileEntity::Tick(float a_Dt, cChunk & a_Chunk)
+void cProjectileEntity::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	super::Tick(a_Dt, a_Chunk);
 	
@@ -346,7 +346,7 @@ void cProjectileEntity::Tick(float a_Dt, cChunk & a_Chunk)
 
 
 
-void cProjectileEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk)
+void cProjectileEntity::HandlePhysics(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	if (m_IsInGround)
 	{
diff --git a/src/Entities/ProjectileEntity.h b/src/Entities/ProjectileEntity.h
index 2a98e31c7..93e442d8c 100644
--- a/src/Entities/ProjectileEntity.h
+++ b/src/Entities/ProjectileEntity.h
@@ -118,8 +118,8 @@ protected:
 	bool m_IsInGround;
 		
 	// cEntity overrides:
-	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
-	virtual void HandlePhysics(float a_Dt, cChunk & a_Chunk) override;
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
+	virtual void HandlePhysics(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 	virtual void SpawnOn(cClientHandle & a_Client) override;
 	
 } ;  // tolua_export
diff --git a/src/Entities/SplashPotionEntity.h b/src/Entities/SplashPotionEntity.h
index 9302d8292..264dc0eb9 100644
--- a/src/Entities/SplashPotionEntity.h
+++ b/src/Entities/SplashPotionEntity.h
@@ -58,7 +58,7 @@ protected:
 	// cProjectileEntity overrides:
 	virtual void OnHitSolidBlock(const Vector3d & a_HitPos, eBlockFace a_HitFace) override;
 	virtual void OnHitEntity    (cEntity & a_EntityHit, const Vector3d & a_HitPos) override;
-	virtual void Tick           (float a_Dt, cChunk & a_Chunk) override
+	virtual void Tick           (std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override
 	{
 		if (m_DestroyTimer > 0)
 		{
diff --git a/src/Entities/TNTEntity.cpp b/src/Entities/TNTEntity.cpp
index 53af446cc..a89d2f300 100644
--- a/src/Entities/TNTEntity.cpp
+++ b/src/Entities/TNTEntity.cpp
@@ -50,7 +50,7 @@ void cTNTEntity::Explode(void)
 
 
 
-void cTNTEntity::Tick(float a_Dt, cChunk & a_Chunk)
+void cTNTEntity::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	super::Tick(a_Dt, a_Chunk);
 	BroadcastMovementUpdate();
diff --git a/src/Entities/TNTEntity.h b/src/Entities/TNTEntity.h
index 48503cf76..9f894338e 100644
--- a/src/Entities/TNTEntity.h
+++ b/src/Entities/TNTEntity.h
@@ -21,7 +21,7 @@ public:
 	
 	// cEntity overrides:
 	virtual void SpawnOn(cClientHandle & a_ClientHandle) override;
-	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 	
 	// tolua_begin
 	
diff --git a/src/Entities/ThrownEggEntity.cpp b/src/Entities/ThrownEggEntity.cpp
index 24c946a9c..e9ef29239 100644
--- a/src/Entities/ThrownEggEntity.cpp
+++ b/src/Entities/ThrownEggEntity.cpp
@@ -44,7 +44,7 @@ void cThrownEggEntity::OnHitEntity(cEntity & a_EntityHit, const Vector3d & a_Hit
 
 
 
-void cThrownEggEntity::Tick(float a_Dt, cChunk & a_Chunk)
+void cThrownEggEntity::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	if (m_DestroyTimer > 0)
 	{
diff --git a/src/Entities/ThrownEggEntity.h b/src/Entities/ThrownEggEntity.h
index 6ffedf5b5..620927c5d 100644
--- a/src/Entities/ThrownEggEntity.h
+++ b/src/Entities/ThrownEggEntity.h
@@ -35,7 +35,7 @@ protected:
 	// cProjectileEntity overrides:
 	virtual void OnHitSolidBlock(const Vector3d & a_HitPos, eBlockFace a_HitFace) override;
 	virtual void OnHitEntity(cEntity & a_EntityHit, const Vector3d & a_HitPos) override;
-	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 	
 	// Randomly decides whether to spawn a chicken where the egg lands.
 	void TrySpawnChicken(const Vector3d & a_HitPos);
diff --git a/src/Entities/ThrownEnderPearlEntity.cpp b/src/Entities/ThrownEnderPearlEntity.cpp
index 8f1b62934..f01cdc18c 100644
--- a/src/Entities/ThrownEnderPearlEntity.cpp
+++ b/src/Entities/ThrownEnderPearlEntity.cpp
@@ -46,7 +46,7 @@ void cThrownEnderPearlEntity::OnHitEntity(cEntity & a_EntityHit, const Vector3d
 
 
 
-void cThrownEnderPearlEntity::Tick(float a_Dt, cChunk & a_Chunk)
+void cThrownEnderPearlEntity::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	if (m_DestroyTimer > 0)
 	{
diff --git a/src/Entities/ThrownEnderPearlEntity.h b/src/Entities/ThrownEnderPearlEntity.h
index 475ebde87..94f3ab5cb 100644
--- a/src/Entities/ThrownEnderPearlEntity.h
+++ b/src/Entities/ThrownEnderPearlEntity.h
@@ -35,7 +35,7 @@ protected:
 	// cProjectileEntity overrides:
 	virtual void OnHitSolidBlock(const Vector3d & a_HitPos, eBlockFace a_HitFace) override;
 	virtual void OnHitEntity(cEntity & a_EntityHit, const Vector3d & a_HitPos) override;
-	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 	
 	/** Teleports the creator where the ender pearl lands */
 	void TeleportCreator(const Vector3d & a_HitPos);
diff --git a/src/Entities/ThrownSnowballEntity.cpp b/src/Entities/ThrownSnowballEntity.cpp
index 88e39d22e..24db1e7ee 100644
--- a/src/Entities/ThrownSnowballEntity.cpp
+++ b/src/Entities/ThrownSnowballEntity.cpp
@@ -48,7 +48,7 @@ void cThrownSnowballEntity::OnHitEntity(cEntity & a_EntityHit, const Vector3d &
 
 
 
-void cThrownSnowballEntity::Tick(float a_Dt, cChunk & a_Chunk)
+void cThrownSnowballEntity::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	if (m_DestroyTimer > 0)
 	{
diff --git a/src/Entities/ThrownSnowballEntity.h b/src/Entities/ThrownSnowballEntity.h
index f806996cc..391b0c40b 100644
--- a/src/Entities/ThrownSnowballEntity.h
+++ b/src/Entities/ThrownSnowballEntity.h
@@ -35,7 +35,7 @@ protected:
 	// cProjectileEntity overrides:
 	virtual void OnHitSolidBlock(const Vector3d & a_HitPos, eBlockFace a_HitFace) override;
 	virtual void OnHitEntity(cEntity & a_EntityHit, const Vector3d & a_HitPos) override;
-	virtual void Tick(float a_Dt, cChunk & a_Chunk) override;
+	virtual void Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk) override;
 
 private: