Changed air drag units to 'interpolated ticks' per second

src/Entities/ArrowEntity.cpp

@@ -51,7 +51,7 @@ cArrowEntity::cArrowEntity(cPlayer & a_Player, double a_Force) :
 		m_PickupState = psInCreative;
 	}
 	SetGravity(-20.0f);
-	SetAirDrag(0.2f);
+	SetAirDrag(0.01f);
 }
 
 

src/Entities/Boat.cpp

@@ -18,7 +18,7 @@ cBoat::cBoat(double a_X, double a_Y, double a_Z) :
 {
 	SetMass(20.0f);
 	SetGravity(-16.0f);
-	SetAirDrag(1.0f);
+	SetAirDrag(0.05f);
 	SetMaxHealth(6);
 	SetHealth(6);
 }

src/Entities/Entity.cpp

@@ -36,7 +36,7 @@ cEntity::cEntity(eEntityType a_EntityType, double a_X, double a_Y, double a_Z, d
 	m_bHasSentNoSpeed(true),
 	m_bOnGround(false),
 	m_Gravity(-9.81f),
-	m_AirDrag(0.4f),
+	m_AirDrag(0.02f),
 	m_LastPos(a_X, a_Y, a_Z),
 	m_IsInitialized(false),
 	m_WorldTravellingFrom(nullptr),
@@ -944,7 +944,7 @@ void cEntity::HandlePhysics(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 		{
 			// Normal gravity
 			fallspeed = m_Gravity * DtSec.count();
-			NextSpeed -= NextSpeed * m_AirDrag * DtSec.count();
+			NextSpeed -= NextSpeed * (m_AirDrag * 20.0f) * DtSec.count();
 		}
 		NextSpeed.y += static_cast<float>(fallspeed);
 	}

src/Entities/Entity.h

@@ -508,8 +508,10 @@ protected:
 	For realistic effects, this should be negative. For spaaaaaaace, this can be zero or even positive */
 	float m_Gravity;
 	
-	/** Stores the air drag that is applied to the entity every tick, measured in speed ratio per second
-	Acts as air friction and slows down flight */
+	/** Stores the air drag that is applied to the entity every tick, measured in speed ratio per tick
+	Acts as air friction and slows down flight
+	Will be interpolated if the server tick rate varies
+	Data: http://minecraft.gamepedia.com/Entity#Motion_of_entities */
 	float m_AirDrag;
 
 	/** Last position sent to client via the Relative Move or Teleport packets (not Velocity)

src/Entities/FallingBlock.cpp

@@ -17,7 +17,7 @@ cFallingBlock::cFallingBlock(const Vector3i & a_BlockPosition, BLOCKTYPE a_Block
 	m_OriginalPosition(a_BlockPosition)
 {
 	SetGravity(-16.0f);
-	SetAirDrag(0.4f);
+	SetAirDrag(0.02f);
 }
 
 

src/Entities/Minecart.cpp

@@ -94,7 +94,7 @@ cMinecart::cMinecart(ePayload a_Payload, double a_X, double a_Y, double a_Z) :
 {
 	SetMass(20.0f);
 	SetGravity(-16.0f);
-	SetAirDrag(1.0f);
+	SetAirDrag(0.05f);
 	SetMaxHealth(6);
 	SetHealth(6);
 	SetWidth(1);

src/Entities/Pawn.cpp

@@ -14,7 +14,7 @@ cPawn::cPawn(eEntityType a_EntityType, double a_Width, double a_Height) :
 	, m_EntityEffects(tEffectMap())
 {
 	SetGravity(-32.0f);
-	SetAirDrag(0.4f);
+	SetAirDrag(0.02f);
 }
 
 

src/Entities/ProjectileEntity.cpp

@@ -228,7 +228,7 @@ cProjectileEntity::cProjectileEntity(eKind a_Kind, cEntity * a_Creator, double a
 	m_IsInGround(false)
 {
 	SetGravity(-12.0f);
-	SetAirDrag(0.2f);
+	SetAirDrag(0.01f);
 }
 
 
@@ -245,7 +245,7 @@ cProjectileEntity::cProjectileEntity(eKind a_Kind, cEntity * a_Creator, const Ve
 	SetYawFromSpeed();
 	SetPitchFromSpeed();
 	SetGravity(-12.0f);
-	SetAirDrag(0.2f);
+	SetAirDrag(0.01f);
 }
 
 
@@ -395,7 +395,7 @@ void cProjectileEntity::HandlePhysics(std::chrono::milliseconds a_Dt, cChunk & a
 	// Add slowdown and gravity effect to the speed:
 	Vector3d NewSpeed(GetSpeed());
 	NewSpeed.y += m_Gravity * DtSec.count();
-	NewSpeed -= NewSpeed * m_AirDrag * DtSec.count();
+	NewSpeed -= NewSpeed * (m_AirDrag * 20.0f) * DtSec.count();
 	SetSpeed(NewSpeed);
 	SetYawFromSpeed();
 	SetPitchFromSpeed();

src/Entities/TNTEntity.cpp

@@ -13,7 +13,7 @@ cTNTEntity::cTNTEntity(double a_X, double a_Y, double a_Z, int a_FuseTicks) :
 	m_FuseTicks(a_FuseTicks)
 {
 	SetGravity(-16.0f);
-	SetAirDrag(0.4f);
+	SetAirDrag(0.02f);
 }
 
 

src/Mobs/Bat.cpp

@@ -9,6 +9,8 @@
 cBat::cBat(void) :
 	super("Bat", mtBat,  "mob.bat.hurt", "mob.bat.death", 0.5, 0.9)
 {
+	SetGravity(-2.0f);
+	SetAirDrag(0.05f);
 }
 
 

src/Mobs/Blaze.cpp

@@ -12,7 +12,7 @@ cBlaze::cBlaze(void) :
 	super("Blaze", mtBlaze, "mob.blaze.hit", "mob.blaze.death", 0.6, 1.8)
 {
 	SetGravity(-8.0f);
-	SetAirDrag(0.8f);
+	SetAirDrag(0.05f);
 }