C++ cChunk::GetPosZ方法代码示例

void cEntity::SetSwimState(cChunk & a_Chunk)
{
	int RelY = (int)floor(GetPosY() + 0.1);
	if ((RelY < 0) || (RelY >= cChunkDef::Height - 1))
	{
		m_IsSwimming = false;
		m_IsSubmerged = false;
		return;
	}

	BLOCKTYPE BlockIn;
	int RelX = POSX_TOINT - a_Chunk.GetPosX() * cChunkDef::Width;
	int RelZ = POSZ_TOINT - a_Chunk.GetPosZ() * cChunkDef::Width;

	// Check if the player is swimming:
	if (!a_Chunk.UnboundedRelGetBlockType(RelX, RelY, RelZ, BlockIn))
	{
		// This sometimes happens on Linux machines
		// Ref.: http://forum.mc-server.org/showthread.php?tid=1244
		LOGD("SetSwimState failure: RelX = %d, RelZ = %d, Pos = %.02f, %.02f}",
			RelX, RelY, GetPosX(), GetPosZ()
		);
		m_IsSwimming = false;
		m_IsSubmerged = false;
		return;
	}
	m_IsSwimming = IsBlockWater(BlockIn);

	// Check if the player is submerged:
	VERIFY(a_Chunk.UnboundedRelGetBlockType(RelX, RelY + 1, RelZ, BlockIn));
	m_IsSubmerged = IsBlockWater(BlockIn);
}

void cSquid::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
{
	m_PathfinderActivated = false;  // Disable Pathfinding until it's fixed. TODO

	// We must first process current location, and only then tick, otherwise we risk processing a location in a chunk
	// that is not where the entity currently resides (FS #411)
	Vector3d Pos = GetPosition();

	// TODO: Not a real behavior, but cool :D
	int RelY = FloorC(Pos.y);
	if ((RelY < 0) || (RelY >= cChunkDef::Height))
	{
		return;
	}
	int RelX = FloorC(Pos.x) - a_Chunk.GetPosX() * cChunkDef::Width;
	int RelZ = FloorC(Pos.z) - a_Chunk.GetPosZ() * cChunkDef::Width;
	BLOCKTYPE BlockType;
	if (a_Chunk.UnboundedRelGetBlockType(RelX, RelY, RelZ, BlockType) && !IsBlockWater(BlockType) && !IsOnFire())
	{
		// Burn for 10 ticks, then decide again
		StartBurning(10);
	}

	super::Tick(a_Dt, a_Chunk);
}

void cFireworkEntity::HandlePhysics(float a_Dt, cChunk & a_Chunk)
{
	int RelX = POSX_TOINT - a_Chunk.GetPosX() * cChunkDef::Width;
	int RelZ = POSZ_TOINT - a_Chunk.GetPosZ() * cChunkDef::Width;
	int PosY = POSY_TOINT;

	if ((PosY < 0) || (PosY >= cChunkDef::Height))
	{
		goto setspeed;
	}

	if (m_IsInGround)
	{
		if (a_Chunk.GetBlock(RelX, POSY_TOINT + 1, RelZ) == E_BLOCK_AIR)
		{
			m_IsInGround = false;
		}
		else
		{
			return;
		}
	}
	else
	{
		if (a_Chunk.GetBlock(RelX, POSY_TOINT + 1, RelZ) != E_BLOCK_AIR)
		{
			OnHitSolidBlock(GetPosition(), BLOCK_FACE_YM);
			return;
		}
	}

setspeed:
	AddSpeedY(1);
	AddPosition(GetSpeed() * (a_Dt / 1000));
}

void cPlayer::SetSwimState(cChunk & a_Chunk)
{
    int RelY = (int)floor(m_LastPosY + 0.1);
    if ((RelY < 0) || (RelY >= cChunkDef::Height - 1))
    {
        m_IsSwimming = false;
        m_IsSubmerged = false;
        return;
    }

    BLOCKTYPE BlockIn;
    int RelX = (int)floor(m_LastPosX) - a_Chunk.GetPosX() * cChunkDef::Width;
    int RelZ = (int)floor(m_LastPosZ) - a_Chunk.GetPosZ() * cChunkDef::Width;

    // Check if the player is swimming:
    // Use Unbounded, because we're being called *after* processing super::Tick(), which could have changed our chunk
    if (!a_Chunk.UnboundedRelGetBlockType(RelX, RelY, RelZ, BlockIn))
    {
        // This sometimes happens on Linux machines
        // Ref.: http://forum.mc-server.org/showthread.php?tid=1244
        LOGD("SetSwimState failure: RelX = %d, RelZ = %d, LastPos = {%.02f, %.02f}, Pos = %.02f, %.02f}",
             RelX, RelY, m_LastPosX, m_LastPosZ, GetPosX(), GetPosZ()
            );
        m_IsSwimming = false;
        m_IsSubmerged = false;
        return;
    }
    m_IsSwimming = IsBlockWater(BlockIn);

    // Check if the player is submerged:
    VERIFY(a_Chunk.UnboundedRelGetBlockType(RelX, RelY + 1, RelZ, BlockIn));
    m_IsSubmerged = IsBlockWater(BlockIn);
}

void cArrowEntity::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
{
	super::Tick(a_Dt, a_Chunk);
	if (!IsTicking())
	{
		// The base class tick destroyed us
		return;
	}
	m_Timer += a_Dt;

	if (m_bIsCollected)
	{
		if (m_Timer > std::chrono::milliseconds(500))
		{
			Destroy();
			return;
		}
	}
	else if (m_Timer > std::chrono::minutes(5))
	{
		Destroy();
		return;
	}

	if (m_IsInGround)
	{
		if (!m_HasTeleported)  // Sent a teleport already, don't do again
		{
			if (m_HitGroundTimer > std::chrono::milliseconds(500))
			{
				m_World->BroadcastTeleportEntity(*this);
				m_HasTeleported = true;
			}
			else
			{
				m_HitGroundTimer += a_Dt;
			}
		}

		int RelPosX = m_HitBlockPos.x - a_Chunk.GetPosX() * cChunkDef::Width;
		int RelPosZ = m_HitBlockPos.z - a_Chunk.GetPosZ() * cChunkDef::Width;
		cChunk * Chunk = a_Chunk.GetRelNeighborChunkAdjustCoords(RelPosX, RelPosZ);

		if (Chunk == nullptr)
		{
			// Inside an unloaded chunk, abort
			return;
		}

		if (Chunk->GetBlock(RelPosX, m_HitBlockPos.y, RelPosZ) == E_BLOCK_AIR)  // Block attached to was destroyed?
		{
			m_IsInGround = false;  // Yes, begin simulating physics again
		}
	}
}

void cArrowEntity::Tick(float a_Dt, cChunk & a_Chunk)
{
	super::Tick(a_Dt, a_Chunk);
	m_Timer += a_Dt;

	if (m_bIsCollected)
	{
		if (m_Timer > 500.f)  // 0.5 seconds
		{
			Destroy();
			return;
		}
	}
	else if (m_Timer > 1000 * 60 * 5)  // 5 minutes
	{
		Destroy();
		return;
	}

	if (m_IsInGround)
	{
		// When an arrow hits, the client doesn't think its in the ground and keeps on moving, IF BroadcastMovementUpdate() and TeleportEntity was called during flight, AT ALL
		// Fix is to simply not sync with the client and send a teleport to confirm pos after arrow has stabilised (around 1 sec after landing)
		// We can afford to do this because xoft's algorithm for trajectory is near perfect, so things are pretty close anyway without sync
		// Besides, this seems to be what the vanilla server does, note how arrows teleport half a second after they hit to the server position

		if (m_HitGroundTimer != -1) // Sent a teleport already, don't do again
		{
			if (m_HitGroundTimer > 1000.f) // Send after a second, could be less, but just in case
			{
				m_World->BroadcastTeleportEntity(*this);
				m_HitGroundTimer = -1;
			}
			else
			{
				m_HitGroundTimer += a_Dt;
			}
		}

		int RelPosX = m_HitBlockPos.x - a_Chunk.GetPosX() * cChunkDef::Width;
		int RelPosZ = m_HitBlockPos.z - a_Chunk.GetPosZ() * cChunkDef::Width;
		cChunk * Chunk = a_Chunk.GetRelNeighborChunkAdjustCoords(RelPosX, RelPosZ);

		if (Chunk == NULL)
		{
			// Inside an unloaded chunk, abort
			return;
		}

		if (Chunk->GetBlock(RelPosX, m_HitBlockPos.y, RelPosZ) == E_BLOCK_AIR) // Block attached to was destroyed?
		{
			m_IsInGround = false; // Yes, begin simulating physics again
		}
	}
}

void cBlockHandler::Check(cChunkInterface & a_ChunkInterface, cBlockPluginInterface & a_PluginInterface, int a_RelX, int a_RelY, int a_RelZ, cChunk & a_Chunk)
{
	if (!CanBeAt(a_ChunkInterface, a_RelX, a_RelY, a_RelZ, a_Chunk))
	{
		if (DoesDropOnUnsuitable())
		{
			int BlockX = a_RelX + a_Chunk.GetPosX() * cChunkDef::Width;
			int BlockZ = a_RelZ + a_Chunk.GetPosZ() * cChunkDef::Width;
			DropBlock(a_ChunkInterface, *a_Chunk.GetWorld(), a_PluginInterface, nullptr, BlockX, a_RelY, BlockZ);
		}

		a_Chunk.SetBlock(a_RelX, a_RelY, a_RelZ, E_BLOCK_AIR, 0);
	}
	else
	{
		// Wake up the simulators for this block:
		int BlockX = a_RelX + a_Chunk.GetPosX() * cChunkDef::Width;
		int BlockZ = a_RelZ + a_Chunk.GetPosZ() * cChunkDef::Width;
		a_Chunk.GetWorld()->GetSimulatorManager()->WakeUp(BlockX, a_RelY, BlockZ, &a_Chunk);
	}
}

/// Moves items out from this hopper into the destination. Returns true if the contents have changed.
bool cHopperEntity::MoveItemsOut(cChunk & a_Chunk, Int64 a_CurrentTick)
{
	if (a_CurrentTick - m_LastMoveItemsOutTick < TICKS_PER_TRANSFER)
	{
		// Too early after the previous transfer
		return false;
	}
	
	int bx, by, bz;
	NIBBLETYPE Meta = a_Chunk.GetMeta(m_RelX, m_PosY, m_RelZ);
	if (!GetOutputBlockPos(Meta, bx, by, bz))
	{
		// Not attached to another container
		return false;
	}
	if (by < 0)
	{
		// Cannot output below the zero-th block level
		return false;
	}
	
	// Convert coords to relative:
	int rx = bx - a_Chunk.GetPosX() * cChunkDef::Width;
	int rz = bz - a_Chunk.GetPosZ() * cChunkDef::Width;
	cChunk * DestChunk = a_Chunk.GetRelNeighborChunkAdjustCoords(rx, rz);
	if (DestChunk == NULL)
	{
		// The destination chunk has been unloaded, don't tick
		return false;
	}
	
	// Call proper moving function, based on the blocktype present at the coords:
	bool res = false;
	switch (DestChunk->GetBlock(rx, by, rz))
	{
		case E_BLOCK_CHEST:       res = MoveItemsToChest(*DestChunk, bx, by, bz); break;
		case E_BLOCK_FURNACE:     res = MoveItemsToFurnace(*DestChunk, bx, by, bz, Meta); break;
		case E_BLOCK_DISPENSER:
		case E_BLOCK_DROPPER:     res = MoveItemsToGrid(((cDropSpenserEntity *)DestChunk->GetBlockEntity(bx, by, bz))->GetContents()); break;
		case E_BLOCK_HOPPER:      res = MoveItemsToGrid(((cHopperEntity *)     DestChunk->GetBlockEntity(bx, by, bz))->GetContents()); break;
		case E_BLOCK_LIT_FURNACE: res = MoveItemsToFurnace(*DestChunk, bx, by, bz, Meta); break;
	}
	
	// If the item has been moved, reset the last tick:
	if (res)
	{
		m_LastMoveItemsOutTick = a_CurrentTick;
	}
	
	return res;
}

void cMinecart::HandlePhysics(float a_Dt, cChunk & a_Chunk)
{
	int PosY = (int)floor(GetPosY());
	if ((PosY <= 0) || (PosY >= cChunkDef::Height))
	{
		// Outside the world, just process normal falling physics
		super::HandlePhysics(a_Dt, a_Chunk);
		BroadcastMovementUpdate();
		return;
	}
	
	int RelPosX = (int)floor(GetPosX()) - a_Chunk.GetPosX() * cChunkDef::Width;
	int RelPosZ = (int)floor(GetPosZ()) - a_Chunk.GetPosZ() * cChunkDef::Width;
	cChunk * Chunk = a_Chunk.GetRelNeighborChunkAdjustCoords(RelPosX, RelPosZ);
	if (Chunk == NULL)
	{
		// Inside an unloaded chunk, bail out all processing
		return;
	}
	BLOCKTYPE BelowType = Chunk->GetBlock(RelPosX, PosY - 1, RelPosZ);
	BLOCKTYPE InsideType = Chunk->GetBlock(RelPosX, PosY, RelPosZ);

	if (IsBlockRail(BelowType))
	{
		HandleRailPhysics(a_Dt, *Chunk);
	}
	else
	{
		if (IsBlockRail(InsideType))
		{
			SetPosY(PosY + 1);
			HandleRailPhysics(a_Dt, *Chunk);
		}
		else
		{
			super::HandlePhysics(a_Dt, *Chunk);
			BroadcastMovementUpdate();
		}
	}
}

void cSquid::Tick(float a_Dt, cChunk & a_Chunk)
{
	// We must first process current location, and only then tick, otherwise we risk processing a location in a chunk
	// that is not where the entity currently resides (FS #411)
	
	Vector3d Pos = GetPosition();

	// TODO: Not a real behavior, but cool :D
	int RelY = (int)floor(Pos.y);
	if ((RelY < 0) || (RelY >= cChunkDef::Height))
	{
		return;
	}
	int RelX = (int)floor(Pos.x) - a_Chunk.GetPosX() * cChunkDef::Width;
	int RelZ = (int)floor(Pos.z) - a_Chunk.GetPosZ() * cChunkDef::Width;
	if (!IsBlockWater(a_Chunk.GetBlock(RelX, RelY, RelZ)) && !IsOnFire())
	{
		// Burn for 10 ticks, then decide again
		StartBurning(10);
	}

	super::Tick(a_Dt, a_Chunk);
}

void cPlayer::SetSwimState(cChunk & a_Chunk)
{
	int RelY = (int)floor(m_LastPosY + 0.1);
	if ((RelY < 0) || (RelY >= cChunkDef::Height - 1))
	{
		m_IsSwimming = false;
		m_IsSubmerged = false;
		return;
	}
	
	BLOCKTYPE BlockIn;
	int RelX = (int)floor(m_LastPosX) - a_Chunk.GetPosX() * cChunkDef::Width;
	int RelZ = (int)floor(m_LastPosZ) - a_Chunk.GetPosZ() * cChunkDef::Width;
	
	// Check if the player is swimming:
	// Use Unbounded, because we're being called *after* processing super::Tick(), which could have changed our chunk
	VERIFY(a_Chunk.UnboundedRelGetBlockType(RelX, RelY, RelZ, BlockIn));
	m_IsSwimming = IsBlockWater(BlockIn);

	// Check if the player is submerged:
	VERIFY(a_Chunk.UnboundedRelGetBlockType(RelX, RelY + 1, RelZ, BlockIn));
	m_IsSubmerged = IsBlockWater(BlockIn);
}

void cMinecart::HandlePhysics(float a_Dt, cChunk & a_Chunk)
{
    if (IsDestroyed())  // Mainly to stop detector rails triggering again after minecart is dead
    {
        return;
    }

    int PosY = POSY_TOINT;
    if ((PosY <= 0) || (PosY >= cChunkDef::Height))
    {
        // Outside the world, just process normal falling physics
        super::HandlePhysics(a_Dt, a_Chunk);
        BroadcastMovementUpdate();
        return;
    }

    int RelPosX = POSX_TOINT - a_Chunk.GetPosX() * cChunkDef::Width;
    int RelPosZ = POSZ_TOINT - a_Chunk.GetPosZ() * cChunkDef::Width;
    cChunk * Chunk = a_Chunk.GetRelNeighborChunkAdjustCoords(RelPosX, RelPosZ);
    if (Chunk == NULL)
    {
        // Inside an unloaded chunk, bail out all processing
        return;
    }

    BLOCKTYPE InsideType;
    NIBBLETYPE InsideMeta;
    Chunk->GetBlockTypeMeta(RelPosX, PosY, RelPosZ, InsideType, InsideMeta);

    if (!IsBlockRail(InsideType))
    {
        Chunk->GetBlockTypeMeta(RelPosX, PosY + 1, RelPosZ, InsideType, InsideMeta);  // When an descending minecart hits a flat rail, it goes through the ground; check for this
        if (IsBlockRail(InsideType)) AddPosY(1);  // Push cart upwards
    }

    bool WasDetectorRail = false;
    if (IsBlockRail(InsideType))
    {
        if (InsideType == E_BLOCK_RAIL)
        {
            SnapToRail(InsideMeta);
        }
        else
        {
            SnapToRail(InsideMeta & 0x07);
        }

        switch (InsideType)
        {
        case E_BLOCK_RAIL:
            HandleRailPhysics(InsideMeta, a_Dt);
            break;
        case E_BLOCK_ACTIVATOR_RAIL:
            break;
        case E_BLOCK_POWERED_RAIL:
            HandlePoweredRailPhysics(InsideMeta);
            break;
        case E_BLOCK_DETECTOR_RAIL:
        {
            HandleDetectorRailPhysics(InsideMeta, a_Dt);
            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
    }
    else
    {
        // Not on rail, default physics
        SetPosY(floor(GetPosY()) + 0.35);  // HandlePhysics overrides this if minecart can fall, else, it is to stop ground clipping minecart bottom when off-rail
        super::HandlePhysics(a_Dt, *Chunk);
    }

    if (m_bIsOnDetectorRail && !Vector3i(POSX_TOINT, POSY_TOINT, POSZ_TOINT).Equals(m_DetectorRailPosition))
    {
        m_World->SetBlock(m_DetectorRailPosition.x, m_DetectorRailPosition.y, m_DetectorRailPosition.z, E_BLOCK_DETECTOR_RAIL, m_World->GetBlockMeta(m_DetectorRailPosition) & 0x07);
        m_bIsOnDetectorRail = false;
    }
    else if (WasDetectorRail)
    {
        m_bIsOnDetectorRail = true;
        m_DetectorRailPosition = Vector3i(POSX_TOINT, POSY_TOINT, POSZ_TOINT);
    }

    // Broadcast positioning changes to client
    BroadcastMovementUpdate();
}

void cFallingBlock::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
{
	// GetWorld()->BroadcastTeleportEntity(*this);  // Test position
	
	int BlockX = POSX_TOINT;
	int BlockY = (int)(GetPosY() - 0.5);
	int BlockZ = POSZ_TOINT;
	
	if (BlockY < 0)
	{
		// Fallen out of this world, just continue falling until out of sight, then destroy:
		if (BlockY < VOID_BOUNDARY)
		{
			Destroy(true);
		}
		return;
	}
	
	if (BlockY >= cChunkDef::Height)
	{
		// Above the world, just wait for it to fall back down
		return;
	}
	
	BLOCKTYPE BlockBelow = a_Chunk.GetBlock(BlockX - a_Chunk.GetPosX() * cChunkDef::Width, BlockY, BlockZ - a_Chunk.GetPosZ() * cChunkDef::Width);
	NIBBLETYPE BelowMeta = a_Chunk.GetMeta(BlockX - a_Chunk.GetPosX() * cChunkDef::Width, BlockY, BlockZ - a_Chunk.GetPosZ() * cChunkDef::Width);
	if (cSandSimulator::DoesBreakFallingThrough(BlockBelow, BelowMeta))
	{
		// Fallen onto a block that breaks this into pickups (e. g. half-slab)
		// Must finish the fall with coords one below the block:
		cSandSimulator::FinishFalling(m_World, BlockX, BlockY, BlockZ, m_BlockType, m_BlockMeta);
		Destroy(true);
		return;
	}
	else if (!cSandSimulator::CanContinueFallThrough(BlockBelow))
	{
		// Fallen onto a solid block
		/*
		LOGD(
			"Sand: Checked below at {%d, %d, %d} (rel {%d, %d, %d}), it's %s, finishing the fall.",
			BlockX, BlockY, BlockZ,
			BlockX - a_Chunk.GetPosX() * cChunkDef::Width, BlockY, BlockZ - a_Chunk.GetPosZ() * cChunkDef::Width,
			ItemTypeToString(BlockBelow).c_str()
		);
		*/

		if (BlockY < cChunkDef::Height - 1)
		{
			cSandSimulator::FinishFalling(m_World, BlockX, BlockY + 1, BlockZ, m_BlockType, m_BlockMeta);
		}
		Destroy(true);
		return;
	}
	
	float MilliDt = a_Dt.count() * 0.001f;
	AddSpeedY(MilliDt * -9.8f);
	AddPosition(GetSpeed() * MilliDt);

	// If not static (one billionth precision) broadcast movement
	if ((fabs(GetSpeedX()) > std::numeric_limits<double>::epsilon()) || (fabs(GetSpeedZ()) > std::numeric_limits<double>::epsilon()))
	{
		BroadcastMovementUpdate();
	}
}

void cMinecart::HandleRailPhysics(float a_Dt, cChunk & a_Chunk)
{
	
	super::HandlePhysics(a_Dt, a_Chunk); // Main physics handling

	/*
	NOTE: Please bear in mind that taking away from negatives make them even more negative,
	adding to negatives make them positive, etc.
	*/
	
	// Get block meta below the cart
	int RelPosX = (int)floor(GetPosX()) - a_Chunk.GetPosX() * cChunkDef::Width;
	int RelPosZ = (int)floor(GetPosZ()) - a_Chunk.GetPosZ() * cChunkDef::Width;
	NIBBLETYPE BelowMeta = a_Chunk.GetMeta(RelPosX, (int)floor(GetPosY() - 1), RelPosZ);
	double SpeedX = GetSpeedX(), SpeedY = GetSpeedY(), SpeedZ = GetSpeedZ(); // Get current speed
	
	switch (BelowMeta)
	{
		case E_META_RAIL_ZM_ZP: // NORTHSOUTH
		{
			SetRotation(270);
			SpeedY = 0; // Don't move vertically as on ground
			SpeedX = 0; // Correct diagonal movement from curved rails
			
			if (SpeedZ != 0) // Don't do anything if cart is stationary
			{
				if (SpeedZ > 0)
				{
					// Going SOUTH, slow down
					SpeedZ = SpeedZ - 0.1;
				}
				else
				{
					// Going NORTH, slow down
					SpeedZ = SpeedZ + 0.1;
				}
			}
			break;
		}

		case E_META_RAIL_XM_XP: // EASTWEST
		{
			SetRotation(180);
			SpeedY = 0;
			SpeedZ = 0;

			if (SpeedX != 0)
			{
				if (SpeedX > 0)
				{
					SpeedX = SpeedX - 0.1;
				}
				else
				{
					SpeedX = SpeedX + 0.1;
				}
			}
			break;
		}

		case E_META_RAIL_ASCEND_ZM: // ASCEND NORTH
		{
			SetRotation(270);
			SetPosY(floor(GetPosY()) + 0.2); // It seems it doesn't work without levitation :/
			SpeedX = 0;

			if (SpeedZ >= 0)
			{
				// SpeedZ POSITIVE, going SOUTH
				if (SpeedZ <= MAX_SPEED) // Speed limit
				{
					SpeedZ = SpeedZ + 0.5; // Speed up
					SpeedY = (0 - SpeedZ); // Downward movement is negative (0 minus positive numbers is negative)
				}
				else
				{
					SpeedZ = MAX_SPEED; // Enforce speed limit
					SpeedY = (0 - SpeedZ);
				}
			}
			else
			{
				// SpeedZ NEGATIVE, going NORTH
				SpeedZ = SpeedZ + 0.4; // Slow down
				SpeedY = (0 - SpeedZ); // Upward movement is positive (0 minus negative number is positive number)
			}
			break;
		}

		case E_META_RAIL_ASCEND_ZP: // ASCEND SOUTH
		{
			SetRotation(270);
			SetPosY(floor(GetPosY()) + 0.2);
			SpeedX = 0;

			if (SpeedZ > 0)
			{
				// SpeedZ POSITIVE, going SOUTH
				SpeedZ = SpeedZ - 0.4; // Slow down
				SpeedY = SpeedZ; // Upward movement positive
//.........这里部分代码省略.........

void cEntity::TickBurning(cChunk & a_Chunk)
{
	// Remember the current burning state:
	bool HasBeenBurning = (m_TicksLeftBurning > 0);

	if (m_World->IsWeatherWet())
	{
		if (POSY_TOINT > m_World->GetHeight(POSX_TOINT, POSZ_TOINT))
		{
			m_TicksLeftBurning = 0;
		}		
	}
	
	// Do the burning damage:
	if (m_TicksLeftBurning > 0)
	{
		m_TicksSinceLastBurnDamage++;
		if (m_TicksSinceLastBurnDamage >= BURN_TICKS_PER_DAMAGE)
		{
			if (!m_IsFireproof)
			{
				TakeDamage(dtOnFire, NULL, BURN_DAMAGE, 0);
			}
			m_TicksSinceLastBurnDamage = 0;
		}
		m_TicksLeftBurning--;
	}
	
	// Update the burning times, based on surroundings:
	int MinRelX = (int)floor(GetPosX() - m_Width / 2) - a_Chunk.GetPosX() * cChunkDef::Width;
	int MaxRelX = (int)floor(GetPosX() + m_Width / 2) - a_Chunk.GetPosX() * cChunkDef::Width;
	int MinRelZ = (int)floor(GetPosZ() - m_Width / 2) - a_Chunk.GetPosZ() * cChunkDef::Width;
	int MaxRelZ = (int)floor(GetPosZ() + m_Width / 2) - a_Chunk.GetPosZ() * cChunkDef::Width;
	int MinY = std::max(0, std::min(cChunkDef::Height - 1, POSY_TOINT));
	int MaxY = std::max(0, std::min(cChunkDef::Height - 1, (int)ceil (GetPosY() + m_Height)));
	bool HasWater = false;
	bool HasLava = false;
	bool HasFire = false;
	
	for (int x = MinRelX; x <= MaxRelX; x++)
	{
		for (int z = MinRelZ; z <= MaxRelZ; z++)
		{
			int RelX = x;
			int RelZ = z;

			for (int y = MinY; y <= MaxY; y++)
			{
				BLOCKTYPE Block;
				a_Chunk.UnboundedRelGetBlockType(RelX, y, RelZ, Block);
				
				switch (Block)
				{
					case E_BLOCK_FIRE:
					{
						HasFire = true;
						break;
					}
					case E_BLOCK_LAVA:
					case E_BLOCK_STATIONARY_LAVA:
					{
						HasLava = true;
						break;
					}
					case E_BLOCK_STATIONARY_WATER:
					case E_BLOCK_WATER:
					{
						HasWater = true;
						break;
					}
				}  // switch (BlockType)
			}  // for y
		}  // for z
	}  // for x
	
	if (HasWater)
	{
		// Extinguish the fire
		m_TicksLeftBurning = 0;
	}
	
	if (HasLava)
	{
		// Burn:
		m_TicksLeftBurning = BURN_TICKS;
		
		// Periodically damage:
		m_TicksSinceLastLavaDamage++;
		if (m_TicksSinceLastLavaDamage >= LAVA_TICKS_PER_DAMAGE)
		{
			if (!m_IsFireproof)
			{
				TakeDamage(dtLavaContact, NULL, LAVA_DAMAGE, 0);
			}
			m_TicksSinceLastLavaDamage = 0;
		}
	}
	else
	{
		m_TicksSinceLastLavaDamage = 0;
//.........这里部分代码省略.........