VoxelBlockGame / Minecraft.World / Entity.cpp

#include "stdafx.h"
#include "com.mojang.nbt.h"
#include "net.minecraft.world.item.h"
#include "net.minecraft.world.item.enchantment.h"
#include "net.minecraft.world.level.h"
#include "net.minecraft.world.level.dimension.h"
#include "net.minecraft.world.level.tile.h"
#include "net.minecraft.world.phys.h"
#include "net.minecraft.world.entity.item.h"
#include "net.minecraft.world.level.material.h"
#include "net.minecraft.world.damagesource.h"
#include "SynchedEntityData.h"
#include "EntityIO.h"
#include "SharedConstants.h"

#include "ParticleTypes.h"

#include "EntityPos.h"
#include "Entity.h"
#include "SoundTypes.h"
#include "..\minecraft.Client\HumanoidModel.h"
#include "..\Minecraft.Client\MinecraftServer.h"
#include "..\Minecraft.Client\MultiPlayerLevel.h"
#include "..\Minecraft.Client\MultiplayerLocalPlayer.h"
#include "..\Minecraft.Client\ServerLevel.h"
#include "..\Minecraft.Client\PlayerList.h"

const wstring Entity::RIDING_TAG = L"Riding";

int Entity::entityCounter = 2048;		// 4J - changed initialiser to 2048, as we are using range 0 - 2047 as special unique smaller ids for things that need network tracked
DWORD Entity::tlsIdx = TlsAlloc();

// 4J - added getSmallId & freeSmallId methods
unsigned int Entity::entityIdUsedFlags[2048/32] = {0};
unsigned int Entity::entityIdWanderFlags[2048/32] = {0};
unsigned int Entity::entityIdRemovingFlags[2048/32] = {0};
int Entity::extraWanderIds[EXTRA_WANDER_MAX] = {0};
int Entity::extraWanderTicks = 0;
int Entity::extraWanderCount = 0;

int Entity::getSmallId()
{
	unsigned int *puiUsedFlags = entityIdUsedFlags;
	unsigned int *puiRemovedFlags = NULL;

	// If we are the server (we should be, if we are allocating small Ids), then check with the server if there are any small Ids which are
	// still in the ServerPlayer's vectors of entities to be removed - these are used to gather up a set of entities into one network packet
	// for final notification to the client that the entities are removed. We can't go re-using these small Ids yet, as otherwise we will
	// potentially end up telling the client that the entity has been removed After we have already re-used its Id and created a new entity.
	// This ends up with newly created client-side entities being removed by accident, causing invisible mobs.
	if( ((size_t)TlsGetValue(tlsIdx) != 0 ) )
	{
		MinecraftServer *server = MinecraftServer::getInstance();
		if( server )
		{
			// In some attempt to optimise this, flagEntitiesToBeRemoved most of the time shouldn't do anything at all, and in this case it
			// doesn't even memset the entityIdRemovingFlags array, so we shouldn't use it if the return value is false.
			bool removedFound = server->flagEntitiesToBeRemoved(entityIdRemovingFlags);
			if( removedFound )
			{
				// Has set up the entityIdRemovingFlags vector in this case, so we should check against this when allocating new ids
				//				app.DebugPrintf("getSmallId: Removed entities found\n");
				puiRemovedFlags = entityIdRemovingFlags;
			}
		}
	}

	for( int i = 0; i < (2048 / 32 ); i++ )
	{
		unsigned int uiFlags = *puiUsedFlags;
		if( uiFlags != 0xffffffff )
		{
			unsigned int uiMask = 0x80000000;
			for( int j = 0; j < 32; j++ )
			{
				// See comments above - now checking (if required) that these aren't newly removed entities that the clients still haven't been told about,
				// so we don't reuse those ids before we should.
				if( puiRemovedFlags )
				{
					if( puiRemovedFlags[i] & uiMask )
					{
						//						app.DebugPrintf("Avoiding using ID %d (0x%x)\n", i * 32 + j,puiRemovedFlags[i]);
						uiMask >>= 1;
						continue;
					}
				}
				if( ( uiFlags & uiMask ) == 0 )
				{
					uiFlags |= uiMask;
					*puiUsedFlags = uiFlags;
					return  i * 32 + j;
				}
				uiMask >>= 1;
			}
		}
		puiUsedFlags++;
	}

	app.DebugPrintf("Out of small entity Ids... possible leak?\n");
	__debugbreak();
	return -1;
}

void Entity::countFlagsForPIX()
{
	int freecount = 0;
	unsigned int *puiUsedFlags = entityIdUsedFlags;
	for( int i = 0; i < (2048 / 32 ); i++ )
	{
		unsigned int uiFlags = *puiUsedFlags;
		if( uiFlags != 0xffffffff )
		{
			unsigned int uiMask = 0x80000000;
			for( int j = 0; j < 32; j++ )
			{
				if( ( uiFlags & uiMask ) == 0 )
				{
					freecount++;
				}
				uiMask >>= 1;
			}
		}
		puiUsedFlags++;
	}
	PIXAddNamedCounter(freecount,"Small Ids free");
	PIXAddNamedCounter(2048 - freecount,"Small Ids used");
}

void Entity::resetSmallId()
{
	freeSmallId(entityId);
	if( ((size_t)TlsGetValue(tlsIdx) != 0 ) )
	{
		entityId = getSmallId();
	}
}

void Entity::freeSmallId(int index)
{
	if( ( (size_t)TlsGetValue(tlsIdx) ) == 0 ) return;		// Don't do anything with small ids if this isn't the server thread
	if( index >= 2048 ) return;							// Don't do anything if this isn't a short id

	unsigned int i = index / 32;
	unsigned int j = index % 32;
	unsigned int uiMask = ~(0x80000000 >> j);

	entityIdUsedFlags[i] &= uiMask;
	entityIdWanderFlags[i] &= uiMask;
}

void Entity::useSmallIds()
{
	TlsSetValue(tlsIdx,(LPVOID)1);
}

// Things also added here to be able to manage the concept of a number of extra "wandering" entities - normally path finding entities aren't allowed to
// randomly wander about once they are a certain distance away from any player, but we want to be able to (in a controlled fashion) allow some to be able
// to move so that we can determine whether they have been enclosed in some kind of farm, and so be able to better determine what shouldn't or shouldn't be despawned.

// Let the management system here know whether or not to consider this particular entity for some extra wandering
void Entity::considerForExtraWandering(bool enable)
{
	if( ( (size_t)TlsGetValue(tlsIdx) ) == 0 ) return;		// Don't do anything with small ids if this isn't the server thread
	if( entityId >= 2048 ) return;							// Don't do anything if this isn't a short id

	unsigned int i = entityId / 32;
	unsigned int j = entityId % 32;
	if( enable )
	{
		unsigned int uiMask = 0x80000000 >> j;
		entityIdWanderFlags[i] |= uiMask;
	}
	else
	{
		unsigned int uiMask = ~(0x80000000 >> j);
		entityIdWanderFlags[i] &= uiMask;
	}
}

// Should this entity do wandering in addition to what the java code would have done?
bool Entity::isExtraWanderingEnabled()
{
	if( ( (size_t)TlsGetValue(tlsIdx) ) == 0 ) return false;		// Don't do anything with small ids if this isn't the server thread
	if( entityId >= 2048 ) return false;						// Don't do anything if this isn't a short id

	for( int i = 0; i < extraWanderCount; i++ )
	{
		if( extraWanderIds[i] == entityId ) return true;
	}
	return false;
}


// Returns a quadrant of direction that a given entity should be moved in - this is to stop the randomness of the wandering/strolling from just making the entity double back
// on itself and thus making the determination of whether the entity has been enclosed take longer than it needs to. This function returns a quadrant from 0 to 3
// that should be consistent within one period of an entity being considered for extra wandering, but should potentially vary between tries and between different entities.
int Entity::getWanderingQuadrant()
{
	return ( entityId + ( extraWanderTicks / EXTRA_WANDER_TICKS ) ) & 3;
}

// Every EXTRA_WANDER_TICKS ticks, attempt to find EXTRA_WANDER_MAX entity Ids from those that have been flagged as ones that should be considered for
// extra wandering
void Entity::tickExtraWandering()
{
	extraWanderTicks++;
	// Time to move onto some new entities?

	if( ( extraWanderTicks % EXTRA_WANDER_TICKS == 0 ) )
	{
		//		printf("Updating extras: ");
		// Start from the next Id after the one that we last found, or zero if we didn't find anything last time
		int entityId = 0;
		if( extraWanderCount )
		{
			entityId = ( extraWanderIds[ extraWanderCount - 1 ] + 1 ) % 2048;
		}

		extraWanderCount = 0;

		for( int k = 0; ( k < 2048 ) && ( extraWanderCount < EXTRA_WANDER_MAX); k++ )
		{
			unsigned int i = entityId / 32;
			unsigned int j = entityId % 32;
			unsigned int uiMask = 0x80000000 >> j;

			if( entityIdWanderFlags[i] & uiMask )
			{
				extraWanderIds[ extraWanderCount++ ] = entityId;
				//				printf("%d, ", entityId);
			}

			entityId = ( entityId + 1 ) % 2048;
		}
		//		printf("\n");
	}
}

// 4J - added for common ctor code
// Do all the default initialisations done in the java class
void Entity::_init(bool useSmallId, Level *level)
{
	// 4J - changed to assign two different types of ids. A range from 0-2047 is used for things that we'll be wanting to identify over the network,
	// so we should only need 11 bits rather than 32 to uniquely identify them. The rest of the range is used for anything we don't need to track like this,
	// currently particles. We only ever want to allocate this type of id from the server thread, so using thread local storage to isolate this.
	if( useSmallId && ((size_t)TlsGetValue(tlsIdx) != 0 ) )
	{
		entityId = getSmallId();
	}
	else
	{
		entityId = Entity::entityCounter++;
		if(entityCounter == 0x7ffffff ) entityCounter = 2048;
	}

	viewScale = 1.0;

	blocksBuilding = false;
	rider = weak_ptr<Entity>();
	riding = nullptr;
	forcedLoading = false;

	//level = NULL; // Level is assigned to in the original c_tor code
	xo = yo = zo = 0.0;
	x = y = z = 0.0;
	xd = yd = zd = 0.0;
	yRot = xRot = 0.0f;
	yRotO = xRotO = 0.0f;
	bb = AABB::newPermanent(0, 0, 0, 0, 0, 0); // 4J Was final
	onGround = false;
	horizontalCollision = verticalCollision = false;
	collision = false;
	hurtMarked = false;
	isStuckInWeb = false;

	slide = true;
	removed = false;
	heightOffset = 0 / 16.0f;

	bbWidth = 0.6f;
	bbHeight = 1.8f;

	walkDistO = 0;
	walkDist = 0;
	moveDist = 0.0f;

	fallDistance = 0;

	nextStep = 1;

	xOld = yOld = zOld = 0.0;
	ySlideOffset = 0;
	footSize = 0.0f;
	noPhysics = false;
	pushthrough = 0.0f;

	random = new Random();

	tickCount = 0;
	flameTime = 1;

	onFire = 0;
	wasInWater = false;


	invulnerableTime = 0;

	firstTick = true;

	fireImmune = false;

	// values that need to be sent to clients in SMP
	if( useSmallId )
	{
		entityData = shared_ptr<SynchedEntityData>(new SynchedEntityData());
	}
	else
	{
		entityData = nullptr;
	}

	xRideRotA = yRideRotA = 0.0;
	inChunk = false;
	xChunk = yChunk = zChunk = 0;
	xp = yp = zp = 0;
	xRotp = yRotp = 0;
	noCulling = false;

	hasImpulse = false;

	changingDimensionDelay = 0;
	isInsidePortal = false;
	portalTime = 0;
	dimension = 0;
	portalEntranceDir = 0;
	invulnerable = false;
	if( useSmallId )
	{
		uuid = L"ent" + Mth::createInsecureUUID(random);
	}

	// 4J Added
	m_ignoreVerticalCollisions = false;
	m_uiAnimOverrideBitmask = 0L;
	m_ignorePortal = false;
}

Entity::Entity(Level *level, bool useSmallId)	// 4J - added useSmallId parameter
{
	MemSect(16);
	_init(useSmallId, level);
	MemSect(0);

	this->level = level;
	// resetPos();
	setPos(0, 0, 0);

	if (level != NULL)
	{
		dimension = level->dimension->id;
	}

	if( entityData )
	{
		entityData->define(DATA_SHARED_FLAGS_ID, (byte) 0);
		entityData->define(DATA_AIR_SUPPLY_ID, TOTAL_AIR_SUPPLY); // 4J Stu - Brought forward from 1.2.3 to fix 38654 - Gameplay: Player will take damage when air bubbles are present if resuming game from load/autosave underwater.
	}

	// 4J Stu - We cannot call virtual functions in ctors, as at this point the object
	// is of type Entity and not a derived class
	//this->defineSynchedData();
}

Entity::~Entity()
{
	freeSmallId(entityId);
	delete random;
	delete bb;
}

shared_ptr<SynchedEntityData> Entity::getEntityData()
{
	return entityData;
}

/*
public bool equals(Object obj) {
if (obj instanceof Entity) {
return ((Entity) obj).entityId == entityId;
}
return false;
}

public int hashCode() {
return entityId;
}
*/

void Entity::resetPos()
{
	if (level == NULL) return;

	shared_ptr<Entity> sharedThis = shared_from_this();
	while (true && y > 0)
	{
		setPos(x, y, z);
		if (level->getCubes(sharedThis, bb)->empty()) break;
		y += 1;
	}

	xd = yd = zd = 0;
	xRot = 0;
}

void Entity::remove()
{
	removed = true;
}


void Entity::setSize(float w, float h)
{
	if (w != bbWidth || h != bbHeight)
	{
		float oldW = bbWidth;

		bbWidth = w;
		bbHeight = h;

		bb->x1 = bb->x0 + bbWidth;
		bb->z1 = bb->z0 + bbWidth;
		bb->y1 = bb->y0 + bbHeight;

		if (bbWidth > oldW && !firstTick && !level->isClientSide)
		{
			move(oldW - bbWidth, 0, oldW - bbWidth);
		}
	}
}

void Entity::setPos(EntityPos *pos)
{
	if (pos->move) setPos(pos->x, pos->y, pos->z);
	else setPos(x, y, z);

	if (pos->rot) setRot(pos->yRot, pos->xRot);
	else setRot(yRot, xRot);
}

void Entity::setRot(float yRot, float xRot)
{
	/* JAVA:
	this->yRot = yRot % 360.0f;
	this->xRot = xRot % 360.0f;

	C++ Cannot do mod of non-integral type
	*/

	while( yRot >= 360.0f )
		yRot -= 360.0f;
	while( yRot < 0 )
		yRot += 360.0f;
	while( xRot >= 360.0f )
		xRot -= 360.0f;

	this->yRot = yRot;
	this->xRot = xRot;
}


void Entity::setPos(double x, double y, double z)
{
	this->x = x;
	this->y = y;
	this->z = z;
	float w = bbWidth / 2;
	float h = bbHeight;
	bb->set(x - w, y - heightOffset + ySlideOffset, z - w, x + w, y - heightOffset + ySlideOffset + h, z + w);
}

void Entity::turn(float xo, float yo)
{
	float xRotOld = xRot;
	float yRotOld = yRot;

	yRot += xo * 0.15f;
	xRot -= yo * 0.15f;
	if (xRot < -90) xRot = -90;
	if (xRot > 90) xRot = 90;

	xRotO += xRot - xRotOld;
	yRotO += yRot - yRotOld;
}

void Entity::interpolateTurn(float xo, float yo)
{
	yRot += xo * 0.15f;
	xRot -= yo * 0.15f;
	if (xRot < -90) xRot = -90;
	if (xRot > 90) xRot = 90;
}

void Entity::tick()
{
	baseTick();
}

void Entity::baseTick()
{
	// 4J Stu - Not needed
	//util.Timer.push("entityBaseTick");

	if (riding != NULL && riding->removed)
	{
		riding = nullptr;
	}

	walkDistO = walkDist;
	xo = x;
	yo = y;
	zo = z;
	xRotO = xRot;
	yRotO = yRot;

	if (!level->isClientSide) // 4J Stu - Don't need this && level instanceof ServerLevel)
	{
		if(!m_ignorePortal) // 4J Added
		{
			MinecraftServer *server = dynamic_cast<ServerLevel *>(level)->getServer();
			int waitTime = getPortalWaitTime();

			if (isInsidePortal)
			{
				if (server->isNetherEnabled())
				{
					if (riding == NULL)
					{
						if (portalTime++ >= waitTime)
						{
							portalTime = waitTime;
							changingDimensionDelay = getDimensionChangingDelay();

							int targetDimension;

							if (level->dimension->id == -1)
							{
								targetDimension = 0;
							}
							else
							{
								targetDimension = -1;
							}

							changeDimension(targetDimension);
						}
					}
					isInsidePortal = false;
				}
			}
			else
			{
				if (portalTime > 0) portalTime -= 4;
				if (portalTime < 0) portalTime = 0;
			}
			if (changingDimensionDelay > 0) changingDimensionDelay--;
		}
	}

	if (isSprinting() && !isInWater() && canCreateParticles())
	{
		int xt = Mth::floor(x);
		int yt = Mth::floor(y - 0.2f - heightOffset);
		int zt = Mth::floor(z);
		int t = level->getTile(xt, yt, zt);
		int d = level->getData(xt, yt, zt);
		if (t > 0)
		{
			level->addParticle(PARTICLE_TILECRACK(t,d), x + (random->nextFloat() - 0.5) * bbWidth, bb->y0 + 0.1, z + (random->nextFloat() - 0.5) * bbWidth, -xd * 4, 1.5, -zd * 4);
		}
	}

	updateInWaterState();

	if (level->isClientSide)
	{
		onFire = 0;
	}
	else
	{
		if (onFire > 0)
		{
			if (fireImmune)
			{
				onFire -= 4;
				if (onFire < 0) onFire = 0;
			}
			else
			{
				if (onFire % 20 == 0)
				{
					hurt(DamageSource::onFire, 1);
				}
				onFire--;
			}
		}
	}

	if (isInLava())
	{
		lavaHurt();
		fallDistance *= .5f;
	}

	if (y < -64)
	{
		outOfWorld();
	}

	if (!level->isClientSide)
	{
		setSharedFlag(FLAG_ONFIRE, onFire > 0);
	}

	firstTick = false;

	// 4J Stu - Unused
	//util.Timer.pop();
}

int Entity::getPortalWaitTime()
{
	return 0;
}

void Entity::lavaHurt()
{
	if (fireImmune)
	{
	}
	else
	{
		hurt(DamageSource::lava, 4);
		setOnFire(15);
	}
}

void Entity::setOnFire(int numberOfSeconds)
{
	int newValue = numberOfSeconds * SharedConstants::TICKS_PER_SECOND;
	newValue = ProtectionEnchantment::getFireAfterDampener(shared_from_this(), newValue);
	if (onFire < newValue)
	{
		onFire = newValue;
	}
}

void Entity::clearFire()
{
	onFire = 0;
}

void Entity::outOfWorld()
{
	remove();
}


bool Entity::isFree(float xa, float ya, float za, float grow)
{
	AABB *box = bb->grow(grow, grow, grow)->cloneMove(xa, ya, za);
	AABBList *aABBs = level->getCubes(shared_from_this(), box);
	if (!aABBs->empty()) return false;
	if (level->containsAnyLiquid(box)) return false;
	return true;
}

bool Entity::isFree(double xa, double ya, double za)
{
	AABB *box = bb->cloneMove(xa, ya, za);
	AABBList *aABBs = level->getCubes(shared_from_this(), box);
	if (!aABBs->empty()) return false;
	if (level->containsAnyLiquid(box)) return false;
	return true;
}

void Entity::move(double xa, double ya, double za, bool noEntityCubes)   // 4J - added noEntityCubes parameter
{
	if (noPhysics)
	{
		bb->move(xa, ya, za);
		x = (bb->x0 + bb->x1) / 2.0f;
		y = bb->y0 + heightOffset - ySlideOffset;
		z = (bb->z0 + bb->z1) / 2.0f;
		return;
	}

	ySlideOffset *= 0.4f;

	double xo = x;
	double yo = y;
	double zo = z;

	if (isStuckInWeb)
	{
		isStuckInWeb = false;

		xa *= 0.25f;
		ya *= 0.05f;
		za *= 0.25f;
		xd = 0.0f;
		yd = 0.0f;
		zd = 0.0f;
	}

	double xaOrg = xa;
	double yaOrg = ya;
	double zaOrg = za;

	AABB *bbOrg = bb->copy();

	bool isPlayerSneaking = onGround && isSneaking() && instanceof(eTYPE_PLAYER);

	if (isPlayerSneaking)
	{
		double d = 0.05;
		while (xa != 0 && level->getCubes(shared_from_this(), bb->cloneMove(xa, -1.0, 0))->empty())
		{
			if (xa < d && xa >= -d) xa = 0;
			else if (xa > 0) xa -= d;
			else xa += d;
			xaOrg = xa;
		}
		while (za != 0 && level->getCubes(shared_from_this(), bb->cloneMove(0, -1.0, za))->empty())
		{
			if (za < d && za >= -d) za = 0;
			else if (za > 0) za -= d;
			else za += d;
			zaOrg = za;
		}
		while (xa != 0 && za != 0 && level->getCubes(shared_from_this(), bb->cloneMove(xa, -1.0, za))->empty())
		{
			if (xa < d && xa >= -d) xa = 0;
			else if (xa > 0) xa -= d;
			else xa += d;
			if (za < d && za >= -d) za = 0;
			else if (za > 0) za -= d;
			else za += d;
			xaOrg = xa;
			zaOrg = za;
		}
	}

	AABBList *aABBs = level->getCubes(shared_from_this(), bb->expand(xa, ya, za), noEntityCubes, true);


	// LAND FIRST, then x and z
	AUTO_VAR(itEndAABB, aABBs->end());

	// 4J Stu - Particles (and possibly other entities) don't have xChunk and zChunk set, so calculate the chunk instead
	int xc = Mth::floor(x / 16);
	int zc = Mth::floor(z / 16);
	if(!level->isClientSide || level->reallyHasChunk(xc, zc))
	{
		// 4J Stu - It's horrible that the client is doing any movement at all! But if we don't have the chunk
		// data then all the collision info will be incorrect as well
		for (AUTO_VAR(it, aABBs->begin()); it != itEndAABB; it++)
			ya = (*it)->clipYCollide(bb, ya);
		bb->move(0, ya, 0);
	}

	if (!slide && yaOrg != ya)
	{
		xa = ya = za = 0;
	}

	bool og = onGround || (yaOrg != ya && yaOrg < 0);

	itEndAABB = aABBs->end();
	for (AUTO_VAR(it, aABBs->begin()); it != itEndAABB; it++)
		xa = (*it)->clipXCollide(bb, xa);

	bb->move(xa, 0, 0);

	if (!slide && xaOrg != xa)
	{
		xa = ya = za = 0;
	}

	itEndAABB = aABBs->end();
	for (AUTO_VAR(it, aABBs->begin()); it != itEndAABB; it++)
		za = (*it)->clipZCollide(bb, za);
	bb->move(0, 0, za);

	if (!slide && zaOrg != za)
	{
		xa = ya = za = 0;
	}

	if (footSize > 0 && og && (isPlayerSneaking || ySlideOffset < 0.05f) && ((xaOrg != xa) || (zaOrg != za)))
	{
		double xaN = xa;
		double yaN = ya;
		double zaN = za;

		xa = xaOrg;
		ya = footSize;
		za = zaOrg;

		AABB *normal = bb->copy();
		bb->set(bbOrg);
		// 4J - added extra expand, as if we don't move up by footSize by hitting a block above us, then overall we could be trying to move as much as footSize downwards,
		// so we'd better include cubes under our feet in this list of things we might possibly collide with
		aABBs = level->getCubes(shared_from_this(), bb->expand(xa, ya, za)->expand(0,-ya,0),false,true);

		// LAND FIRST, then x and z
		itEndAABB = aABBs->end();

		if(!level->isClientSide || level->reallyHasChunk(xc, zc))
		{
			// 4J Stu - It's horrible that the client is doing any movement at all! But if we don't have the chunk
			// data then all the collision info will be incorrect as well
			for (AUTO_VAR(it, aABBs->begin()); it != itEndAABB; it++)
				ya = (*it)->clipYCollide(bb, ya);
			bb->move(0, ya, 0);
		}

		if (!slide && yaOrg != ya)
		{
			xa = ya = za = 0;
		}


		itEndAABB = aABBs->end();
		for (AUTO_VAR(it, aABBs->begin()); it != itEndAABB; it++)
			xa = (*it)->clipXCollide(bb, xa);
		bb->move(xa, 0, 0);

		if (!slide && xaOrg != xa)
		{
			xa = ya = za = 0;
		}

		itEndAABB = aABBs->end();
		for (AUTO_VAR(it, aABBs->begin()); it != itEndAABB; it++)
			za = (*it)->clipZCollide(bb, za);
		bb->move(0, 0, za);

		if (!slide && zaOrg != za)
		{
			xa = ya = za = 0;
		}


		if (!slide && yaOrg != ya)
		{
			xa = ya = za = 0;
		}
		else
		{
			ya = -footSize;
			// LAND FIRST, then x and z
			itEndAABB = aABBs->end();
			for (AUTO_VAR(it, aABBs->begin()); it != itEndAABB; it++)
				ya = (*it)->clipYCollide(bb, ya);
			bb->move(0, ya, 0);
		}

		if (xaN * xaN + zaN * zaN >= xa * xa + za * za)
		{
			xa = xaN;
			ya = yaN;
			za = zaN;
			bb->set(normal);
		}
	}


	x = (bb->x0 + bb->x1) / 2.0f;
	y = bb->y0 + heightOffset - ySlideOffset;
	z = (bb->z0 + bb->z1) / 2.0f;

	horizontalCollision = (xaOrg != xa) || (zaOrg != za);
	verticalCollision = !m_ignoreVerticalCollisions && (yaOrg != ya);
	onGround = !m_ignoreVerticalCollisions && yaOrg != ya && yaOrg < 0;
	collision = horizontalCollision || verticalCollision;
	checkFallDamage(ya, onGround);

	if (xaOrg != xa) xd = 0;
	if (yaOrg != ya) yd = 0;
	if (zaOrg != za) zd = 0;

	double xm = x - xo;
	double ym = y - yo;
	double zm = z - zo;


	if (makeStepSound() && !isPlayerSneaking && riding == NULL)
	{
		int xt = Mth::floor(x);
		int yt = Mth::floor(y - 0.2f - heightOffset);
		int zt = Mth::floor(z);
		int t = level->getTile(xt, yt, zt);
		if (t == 0)
		{
			int renderShape = level->getTileRenderShape(xt, yt - 1, zt);
			if (renderShape == Tile::SHAPE_FENCE || renderShape == Tile::SHAPE_WALL || renderShape == Tile::SHAPE_FENCE_GATE)
			{
				t = level->getTile(xt, yt - 1, zt);
			}
		}
		if (t != Tile::ladder_Id)
		{
			ym = 0;
		}

		walkDist += Mth::sqrt(xm * xm + zm * zm) * 0.6;
		moveDist += Mth::sqrt(xm * xm + ym * ym + zm * zm) * 0.6;

		if (moveDist > nextStep && t > 0)
		{
			nextStep = (int) moveDist + 1;
			if (isInWater())
			{
				float speed = Mth::sqrt(xd * xd * 0.2f + yd * yd + zd * zd * 0.2f) * 0.35f;
				if (speed > 1) speed = 1;
				playSound(eSoundType_LIQUID_SWIM, speed, 1 + (random->nextFloat() - random->nextFloat()) * 0.4f);
			}
			playStepSound(xt, yt, zt, t);
			Tile::tiles[t]->stepOn(level, xt, yt, zt, shared_from_this());
		}
	}

	checkInsideTiles();


	bool water = isInWaterOrRain();
	if (level->containsFireTile(bb->shrink(0.001, 0.001, 0.001)))
	{
		burn(1);
		if (!water)
		{
			onFire++;
			if (onFire == 0) setOnFire(8);
		}
	}
	else
	{
		if (onFire <= 0)
		{
			onFire = -flameTime;
		}
	}

	if (water && onFire > 0)
	{
		playSound(eSoundType_RANDOM_FIZZ, 0.7f, 1.6f + (random->nextFloat() - random->nextFloat()) * 0.4f);
		onFire = -flameTime;
	}
}

void Entity::checkInsideTiles()
{
	int x0 = Mth::floor(bb->x0 + 0.001);
	int y0 = Mth::floor(bb->y0 + 0.001);
	int z0 = Mth::floor(bb->z0 + 0.001);
	int x1 = Mth::floor(bb->x1 - 0.001);
	int y1 = Mth::floor(bb->y1 - 0.001);
	int z1 = Mth::floor(bb->z1 - 0.001);

	if (level->hasChunksAt(x0, y0, z0, x1, y1, z1))
	{
		for (int x = x0; x <= x1; x++)
			for (int y = y0; y <= y1; y++)
				for (int z = z0; z <= z1; z++)
				{
					int t = level->getTile(x, y, z);
					if (t > 0)
					{
						Tile::tiles[t]->entityInside(level, x, y, z, shared_from_this());
					}
				}
	}
}


void Entity::playStepSound(int xt, int yt, int zt, int t)
{
	const Tile::SoundType *soundType = Tile::tiles[t]->soundType;
	MemSect(31);

	if (GetType() == eTYPE_PLAYER)
	{
		// should we turn off step sounds?
		unsigned int uiAnimOverrideBitmask=getAnimOverrideBitmask(); // this is masked for custom anim off, and force anim

		if(( uiAnimOverrideBitmask& (1<<HumanoidModel::eAnim_NoLegAnim))!=0)
		{
			return;
		}

	}
	if (level->getTile(xt, yt + 1, zt) == Tile::topSnow_Id)
	{
		soundType = Tile::topSnow->soundType;
		playSound(soundType->getStepSound(), soundType->getVolume() * 0.15f, soundType->getPitch());
	}
	else if (!Tile::tiles[t]->material->isLiquid())
	{
		playSound(soundType->getStepSound(), soundType->getVolume() * 0.15f, soundType->getPitch());
	}

	MemSect(0);
}

void Entity::playSound(int iSound, float volume, float pitch)
{
	level->playEntitySound(shared_from_this(), iSound, volume, pitch);
}

bool Entity::makeStepSound()
{
	return true;
}

void Entity::checkFallDamage(double ya, bool onGround)
{
	if (onGround)
	{
		if (fallDistance > 0)
		{
			causeFallDamage(fallDistance);
			fallDistance = 0;
		}
	}
	else
	{
		if (ya < 0) fallDistance -= (float) ya;
	}
}

AABB *Entity::getCollideBox()
{
	return NULL;
}

void Entity::burn(int dmg)
{
	if (!fireImmune)
	{
		hurt(DamageSource::inFire, dmg);
	}
}

bool Entity::isFireImmune()
{
	return fireImmune;
}

void Entity::causeFallDamage(float distance)
{
	if (rider.lock() != NULL) rider.lock()->causeFallDamage(distance);
}


bool Entity::isInWaterOrRain()
{
	return wasInWater || (level->isRainingAt( Mth::floor(x), Mth::floor(y), Mth::floor(z)) || level->isRainingAt(Mth::floor(x), Mth::floor(y + bbHeight), Mth::floor(z)));
}

bool Entity::isInWater()
{
	return wasInWater;
}

bool Entity::updateInWaterState()
{
	if(level->checkAndHandleWater(bb->grow(0, -0.4f, 0)->shrink(0.001, 0.001, 0.001), Material::water, shared_from_this()))
	{
		if (!wasInWater && !firstTick && canCreateParticles())
		{
			float speed = Mth::sqrt(xd * xd * 0.2f + yd * yd + zd * zd * 0.2f) * 0.2f;
			if (speed > 1) speed = 1;
			MemSect(31);
			playSound(eSoundType_RANDOM_SPLASH, speed, 1 + (random->nextFloat() - random->nextFloat()) * 0.4f);
			MemSect(0);
			float yt = (float) Mth::floor(bb->y0);
			for (int i = 0; i < 1 + bbWidth * 20; i++)
			{
				float xo = (random->nextFloat() * 2 - 1) * bbWidth;
				float zo = (random->nextFloat() * 2 - 1) * bbWidth;
				level->addParticle(eParticleType_bubble, x + xo, yt + 1, z + zo, xd, yd - random->nextFloat() * 0.2f, zd);
			}
			for (int i = 0; i < 1 + bbWidth * 20; i++)
			{
				float xo = (random->nextFloat() * 2 - 1) * bbWidth;
				float zo = (random->nextFloat() * 2 - 1) * bbWidth;
				level->addParticle(eParticleType_splash, x + xo, yt + 1, z + zo, xd, yd, zd);
			}
		}
		fallDistance = 0;
		wasInWater = true;
		onFire = 0;
	}
	else
	{
		wasInWater = false;
	}
	return wasInWater;
}

bool Entity::isUnderLiquid(Material *material)
{
	double yp = y + getHeadHeight();
	int xt = Mth::floor(x);
	int yt = Mth::floor(yp);	// 4J - this used to be a nested pair of floors for some reason
	int zt = Mth::floor(z);
	int t = level->getTile(xt, yt, zt);
	if (t != 0 && Tile::tiles[t]->material == material) {
		float hh = LiquidTile::getHeight(level->getData(xt, yt, zt)) - 1 / 9.0f;
		float h = yt + 1 - hh;
		return yp < h;
	}
	return false;
}

float Entity::getHeadHeight()
{
	return 0;
}

bool Entity::isInLava()
{
	return level->containsMaterial(bb->grow(-0.1f, -0.4f, -0.1f), Material::lava);
}

void Entity::moveRelative(float xa, float za, float speed)
{
	float dist = xa * xa + za * za;
	if (dist < 0.01f * 0.01f) return;

	dist = sqrt(dist);
	if (dist < 1) dist = 1;
	dist = speed / dist;
	xa *= dist;
	za *= dist;

	float sinVar = Mth::sin(yRot * PI / 180);
	float cosVar = Mth::cos(yRot * PI / 180);

	xd += xa * cosVar - za * sinVar;
	zd += za * cosVar + xa * sinVar;
}

// 4J - change brought forward from 1.8.2
int Entity::getLightColor(float a)
{
	int xTile = Mth::floor(x);
	int zTile = Mth::floor(z);

	if (level->hasChunkAt(xTile, 0, zTile))
	{
		double hh = (bb->y1 - bb->y0) * 0.66;
		int yTile = Mth::floor(y - heightOffset + hh);
		return level->getLightColor(xTile, yTile, zTile, 0);
	}
	return 0;
}

// 4J - changes brought forward from 1.8.2
float Entity::getBrightness(float a)
{
	int xTile = Mth::floor(x);
	int zTile = Mth::floor(z);
	if (level->hasChunkAt(xTile, 0, zTile))
	{
		double hh = (bb->y1 - bb->y0) * 0.66;
		int yTile = Mth::floor(y - heightOffset + hh);
		return level->getBrightness(xTile, yTile, zTile);
	}
	return 0;
}

void Entity::setLevel(Level *level)
{
	this->level = level;
}

void Entity::absMoveTo(double x, double y, double z, float yRot, float xRot)
{
	xo = this->x = x;
	yo = this->y = y;
	zo = this->z = z;
	yRotO = this->yRot = yRot;
	xRotO = this->xRot = xRot;
	ySlideOffset = 0;

	double yRotDiff = yRotO - yRot;
	if (yRotDiff < -180) yRotO += 360;
	if (yRotDiff >= 180) yRotO -= 360;
	setPos(this->x, this->y, this->z);
	setRot(yRot, xRot);
}

void Entity::moveTo(double x, double y, double z, float yRot, float xRot)
{
	xOld = xo = this->x = x;
	yOld = yo = this->y = y + heightOffset;
	zOld = zo = this->z = z;
	this->yRot = yRot;
	this->xRot = xRot;
	setPos(this->x, this->y, this->z);
}

float Entity::distanceTo(shared_ptr<Entity> e)
{
	float xd = (float) (x - e->x);
	float yd = (float) (y - e->y);
	float zd = (float) (z - e->z);
	return sqrt(xd * xd + yd * yd + zd * zd);
}

double Entity::distanceToSqr(double x2, double y2, double z2)
{
	double xd = (x - x2);
	double yd = (y - y2);
	double zd = (z - z2);
	return xd * xd + yd * yd + zd * zd;
}

double Entity::distanceTo(double x2, double y2, double z2)
{
	double xd = (x - x2);
	double yd = (y - y2);
	double zd = (z - z2);
	return sqrt(xd * xd + yd * yd + zd * zd);
}

double Entity::distanceToSqr(shared_ptr<Entity> e)
{
	double xd = x - e->x;
	double yd = y - e->y;
	double zd = z - e->z;
	return xd * xd + yd * yd + zd * zd;
}

void Entity::playerTouch(shared_ptr<Player> player)
{
}

void Entity::push(shared_ptr<Entity> e)
{
	if (e->rider.lock().get() == this || e->riding.get() == this) return;

	double xa = e->x - x;
	double za = e->z - z;

	double dd = Mth::asbMax(xa, za);

	if (dd >= 0.01f)
	{
		dd = sqrt(dd);
		xa /= dd;
		za /= dd;

		double pow = 1 / dd;
		if (pow > 1) pow = 1;
		xa *= pow;
		za *= pow;

		xa *= 0.05f;
		za *= 0.05f;

		xa *= 1 - pushthrough;
		za *= 1 - pushthrough;

		push(-xa, 0, -za);
		e->push(xa, 0, za);
	}
}

void Entity::push(double xa, double ya, double za)
{
	xd += xa;
	yd += ya;
	zd += za;
	hasImpulse = true;
}

void Entity::markHurt()
{
	hurtMarked = true;
}

bool Entity::hurt(DamageSource *source, float damage)
{
	if(isInvulnerable()) return false;
	markHurt();
	return false;
}

bool Entity::intersects(double x0, double y0, double z0, double x1, double y1, double z1)
{
	return bb->intersects(x0, y0, z0, x1, y1, z1);
}

bool Entity::isPickable()
{
	return false;
}

bool Entity::isPushable()
{
	return false;
}

bool Entity::isShootable()
{
	return false;
}

void Entity::awardKillScore(shared_ptr<Entity> victim, int score)
{
}

bool Entity::shouldRender(Vec3 *c)
{
	double xd = x - c->x;
	double yd = y - c->y;
	double zd = z - c->z;
	double distance = xd * xd + yd * yd + zd * zd;
	return shouldRenderAtSqrDistance(distance);
}

bool Entity::shouldRenderAtSqrDistance(double distance)
{
	double size = bb->getSize();
	size *= 64.0f * viewScale;
	return distance < size * size;
}

bool Entity::isCreativeModeAllowed()
{
	return false;
}

bool Entity::saveAsMount(CompoundTag *entityTag)
{
	wstring id = getEncodeId();
	if (removed || id.empty() )
	{
		return false;
	}
	// TODO Is this fine to be casting to a non-const char pointer?
	entityTag->putString(L"id", id );
	saveWithoutId(entityTag);
	return true;
}

bool Entity::save(CompoundTag *entityTag)
{
	wstring id = getEncodeId();
	if (removed || id.empty() || (rider.lock() != NULL) )
	{
		return false;
	}
	// TODO Is this fine to be casting to a non-const char pointer?
	entityTag->putString(L"id", id );
	saveWithoutId(entityTag);
	return true;
}

void Entity::saveWithoutId(CompoundTag *entityTag)
{
	entityTag->put(L"Pos", newDoubleList(3, x, y + ySlideOffset, z));
	entityTag->put(L"Motion", newDoubleList(3, xd, yd, zd));
	entityTag->put(L"Rotation", newFloatList(2, yRot, xRot));

	entityTag->putFloat(L"FallDistance", fallDistance);
	entityTag->putShort(L"Fire", (short) onFire);
	entityTag->putShort(L"Air", (short) getAirSupply());
	entityTag->putBoolean(L"OnGround", onGround);
	entityTag->putInt(L"Dimension", dimension);
	entityTag->putBoolean(L"Invulnerable", invulnerable);
	entityTag->putInt(L"PortalCooldown", changingDimensionDelay);

	entityTag->putString(L"UUID", uuid);

	addAdditonalSaveData(entityTag);

	if (riding != NULL)
	{
		CompoundTag *ridingTag = new CompoundTag(RIDING_TAG);
		if (riding->saveAsMount(ridingTag))
		{
			entityTag->put(L"Riding", ridingTag);
		}
	}
}

void Entity::load(CompoundTag *tag)
{
	ListTag<DoubleTag> *pos = (ListTag<DoubleTag> *) tag->getList(L"Pos");
	ListTag<DoubleTag> *motion = (ListTag<DoubleTag> *) tag->getList(L"Motion");
	ListTag<FloatTag> *rotation = (ListTag<FloatTag> *) tag->getList(L"Rotation");

	xd = motion->get(0)->data;
	yd = motion->get(1)->data;
	zd = motion->get(2)->data;

	if (abs(xd) > 10.0)
	{
		xd = 0;
	}
	if (abs(yd) > 10.0)
	{
		yd = 0;
	}
	if (abs(zd) > 10.0)
	{
		zd = 0;
	}

	xo = xOld = x = pos->get(0)->data;
	yo = yOld = y = pos->get(1)->data;
	zo = zOld = z = pos->get(2)->data;

	yRotO = yRot = rotation->get(0)->data;
	xRotO = xRot = rotation->get(1)->data;

	fallDistance = tag->getFloat(L"FallDistance");
	onFire = tag->getShort(L"Fire");
	setAirSupply(tag->getShort(L"Air"));
	onGround = tag->getBoolean(L"OnGround");
	dimension = tag->getInt(L"Dimension");
	invulnerable = tag->getBoolean(L"Invulnerable");
	changingDimensionDelay = tag->getInt(L"PortalCooldown");

	if (tag->contains(L"UUID"))
	{
		uuid = tag->getString(L"UUID");
	}

	setPos(x, y, z);
	setRot(yRot, xRot);

	readAdditionalSaveData(tag);

	// set position again because bb size may have changed
	if (repositionEntityAfterLoad()) setPos(x, y, z);
}

bool Entity::repositionEntityAfterLoad()
{
	return true;
}

const wstring Entity::getEncodeId()
{
	return EntityIO::getEncodeId( shared_from_this() );
}

/**
* Called after load() has finished and the entity has been added to the
* world
*/
void Entity::onLoadedFromSave()
{

}

template<typename ...Args>
ListTag<DoubleTag> *Entity::newDoubleList(unsigned int, double firstValue, Args... args)
{
	ListTag<DoubleTag> *res = new ListTag<DoubleTag>();

	// Add the first parameter to the ListTag
	res->add( new DoubleTag(L"", firstValue ) );

	// use pre-C++17 fold trick (TODO: once we drop C++14 support, use C++14 fold expression)
	using expander = int[];
    (void)expander{0, (res->add(new DoubleTag(L"", static_cast<double>(args))), 0)...};

	return res;
}

ListTag<FloatTag> *Entity::newFloatList(unsigned int number, float firstValue, float secondValue)
{
	ListTag<FloatTag> *res = new ListTag<FloatTag>();

	// Add the first parameter to the ListTag
	res->add( new FloatTag( L"", firstValue ) );

	// TODO - 4J Stu For some reason the va_list wasn't working correctly here
	// We only make a list of two floats so just overriding and not using va_list
	res->add( new FloatTag( L"", secondValue ) );

	/*
	va_list vl;
	va_start(vl,firstValue);

	float val;

	for (unsigned int i = 1; i < number; i++)
	{
	val = va_arg(vl,float);
	res->add(new FloatTag(val));
	}
	va_end(vl);
	*/
	return res;
}

float Entity::getShadowHeightOffs()
{
	return bbHeight / 2;
}

shared_ptr<ItemEntity> Entity::spawnAtLocation(int resource, int count)
{
	return spawnAtLocation(resource, count, 0);
}

shared_ptr<ItemEntity> Entity::spawnAtLocation(int resource, int count, float yOffs)
{
	return spawnAtLocation(shared_ptr<ItemInstance>( new ItemInstance(resource, count, 0) ), yOffs);
}

shared_ptr<ItemEntity> Entity::spawnAtLocation(shared_ptr<ItemInstance> itemInstance, float yOffs)
{
	if (itemInstance->count == 0)
	{
		return nullptr;
	}
	shared_ptr<ItemEntity> ie = shared_ptr<ItemEntity>( new ItemEntity(level, x, y + yOffs, z, itemInstance) );
	ie->throwTime = 10;
	level->addEntity(ie);
	return ie;
}

bool Entity::isAlive()
{
	return !removed;
}

bool Entity::isInWall()
{
	for (int i = 0; i < 8; i++)
	{
		float xo = ((i >> 0) % 2 - 0.5f) * bbWidth * 0.8f;
		float yo = ((i >> 1) % 2 - 0.5f) * 0.1f;
		float zo = ((i >> 2) % 2 - 0.5f) * bbWidth * 0.8f;
		int xt = Mth::floor(x + xo);
		int yt = Mth::floor(y + getHeadHeight() + yo);
		int zt = Mth::floor(z + zo);
		if (level->isSolidBlockingTile(xt, yt, zt))
		{
			return true;
		}
	}
	return false;
}

bool Entity::interact(shared_ptr<Player> player)
{
	return false;
}

AABB *Entity::getCollideAgainstBox(shared_ptr<Entity> entity)
{
	return NULL;
}

void Entity::rideTick()
{
	if (riding->removed)
	{
		riding = nullptr;
		return;
	}
	xd = yd = zd = 0;
	tick();

	if (riding == NULL) return;

	// Sets riders old&new position to it's mount's old&new position (plus the ride y-seperatation).
	riding->positionRider();

	yRideRotA += (riding->yRot - riding->yRotO);
	xRideRotA += (riding->xRot - riding->xRotO);

	// Wrap rotation angles.
	while (yRideRotA >= 180) yRideRotA -= 360;
	while (yRideRotA < -180) yRideRotA += 360;
	while (xRideRotA >= 180) xRideRotA -= 360;
	while (xRideRotA < -180) xRideRotA += 360;

	double yra = yRideRotA * 0.5;
	double xra = xRideRotA * 0.5;

	// Cap rotation speed.
	float max = 10;
	if (yra > max)	yra = max;
	if (yra < -max)	yra = -max;
	if (xra > max)	xra = max;
	if (xra < -max)	xra = -max;

	yRideRotA -= yra;
	xRideRotA -= xra;

	// jeb: This caused the crosshair to "drift" while riding horses. For now I've just disabled it,
	//      because I can't figure out what it's needed for. Riding boats and minecarts seem unaffected...
	// yRot += yra;
	// xRot += xra;
}

void Entity::positionRider()
{
	shared_ptr<Entity> lockedRider = rider.lock();
	if( lockedRider == NULL)
	{
		return;
	}
	lockedRider->setPos(x, y + getRideHeight() + lockedRider->getRidingHeight(), z);
}

double Entity::getRidingHeight()
{
	return heightOffset;
}

double Entity::getRideHeight()
{
	return bbHeight * .75;
}

void Entity::ride(shared_ptr<Entity> e)
{
	xRideRotA = 0;
	yRideRotA = 0;

	if (e == NULL)
	{
		if (riding != NULL)
		{
			// 4J Stu - Position should already be updated before the SetEntityLinkPacket comes in
			if(!level->isClientSide) moveTo(riding->x, riding->bb->y0 + riding->bbHeight, riding->z, yRot, xRot);
			riding->rider = weak_ptr<Entity>();
		}
		riding = nullptr;
		return;
	}
	if (riding != NULL)
	{
		riding->rider = weak_ptr<Entity>();
	}
	riding = e;
	e->rider = shared_from_this();
}

void Entity::lerpTo(double x, double y, double z, float yRot, float xRot, int steps)
{
	setPos(x, y, z);
	setRot(yRot, xRot);

	// 4J - don't know what this special y collision is specifically for, but its definitely bad news
	// for arrows as they are actually Meant to intersect the geometry they land in slightly.
	if( GetType() != eTYPE_ARROW )
	{
		AABBList *collisions = level->getCubes(shared_from_this(), bb->shrink(1 / 32.0, 0, 1 / 32.0));
		if (!collisions->empty())
		{
			double yTop = 0;
			AUTO_VAR(itEnd, collisions->end());
			for (AUTO_VAR(it, collisions->begin()); it != itEnd; it++)
			{
				AABB *ab = *it; //collisions->at(i);
				if (ab->y1 > yTop) yTop = ab->y1;
			}

			y += yTop - bb->y0;
			setPos(x, y, z);
		}
	}
}

float Entity::getPickRadius()
{
	return 0.1f;
}

Vec3 *Entity::getLookAngle()
{
	return NULL;
}

void Entity::handleInsidePortal()
{
	if (changingDimensionDelay > 0)
	{
		changingDimensionDelay = getDimensionChangingDelay();
		return;
	}

	double xd = xo - x;
	double zd = zo - z;

	if (!level->isClientSide && !isInsidePortal)
	{
		portalEntranceDir = Direction::getDirection(xd, zd);
	}

	isInsidePortal = true;
}

int Entity::getDimensionChangingDelay()
{
	return SharedConstants::TICKS_PER_SECOND * 45;
}

void Entity::lerpMotion(double xd, double yd, double zd)
{
	this->xd = xd;
	this->yd = yd;
	this->zd = zd;
}

void Entity::handleEntityEvent(byte eventId)
{
}

void Entity::animateHurt()
{
}

ItemInstanceArray Entity::getEquipmentSlots() // ItemInstance[]
{
	return ItemInstanceArray();	// Default ctor creates NULL internal array
}

// 4J Stu - Brought forward change from 1.3 to fix #64688 - Customer Encountered: TU7: Content: Art: Aura of enchanted item is not displayed for other players in online game
void Entity::setEquippedSlot(int slot, shared_ptr<ItemInstance> item)
{
}

bool Entity::isOnFire()
{
	return !fireImmune && (onFire > 0 || getSharedFlag(FLAG_ONFIRE));
}

bool Entity::isRiding()
{
	return riding != NULL;
}

bool Entity::isSneaking()
{
	return getSharedFlag(FLAG_SNEAKING);
}

void Entity::setSneaking(bool value)
{
	setSharedFlag(FLAG_SNEAKING, value);
}

bool Entity::isIdle()
{
	return getSharedFlag(FLAG_IDLEANIM);
}

void Entity::setIsIdle(bool value)
{
	setSharedFlag(FLAG_IDLEANIM, value);
}

bool Entity::isSprinting()
{
	return getSharedFlag(FLAG_SPRINTING);
}

void Entity::setSprinting(bool value)
{
	setSharedFlag(FLAG_SPRINTING, value);
}

bool Entity::isInvisible()
{
	return getSharedFlag(FLAG_INVISIBLE);
}

bool Entity::isInvisibleTo(shared_ptr<Player> plr)
{
	return isInvisible();
}

void Entity::setInvisible(bool value)
{
	setSharedFlag(FLAG_INVISIBLE, value);
}

bool Entity::isWeakened()
{
	return getSharedFlag(FLAG_EFFECT_WEAKENED);
}

void Entity::setWeakened(bool value)
{
	setSharedFlag(FLAG_EFFECT_WEAKENED, value);
}

bool Entity::isUsingItemFlag()
{
	return getSharedFlag(FLAG_USING_ITEM);
}

void Entity::setUsingItemFlag(bool value)
{
	setSharedFlag(FLAG_USING_ITEM, value);
}

bool Entity::getSharedFlag(int flag)
{
	if( entityData )
	{
		return (entityData->getByte(DATA_SHARED_FLAGS_ID) & (1 << flag)) != 0;
	}
	else
	{
		return false;
	}
}

void Entity::setSharedFlag(int flag, bool value)
{
	if( entityData )
	{
		byte currentValue = entityData->getByte(DATA_SHARED_FLAGS_ID);
		if (value)
		{
			entityData->set(DATA_SHARED_FLAGS_ID, (byte) (currentValue | (1 << flag)));
		}
		else
		{
			entityData->set(DATA_SHARED_FLAGS_ID, (byte) (currentValue & ~(1 << flag)));
		}
	}
}

// 4J Stu - Brought forward from 1.2.3 to fix 38654 - Gameplay: Player will take damage when air bubbles are present if resuming game from load/autosave underwater.
int Entity::getAirSupply()
{
	return entityData->getShort(DATA_AIR_SUPPLY_ID);
}

// 4J Stu - Brought forward from 1.2.3 to fix 38654 - Gameplay: Player will take damage when air bubbles are present if resuming game from load/autosave underwater.
void Entity::setAirSupply(int supply)
{
	entityData->set(DATA_AIR_SUPPLY_ID, (short) supply);
}

void Entity::thunderHit(const LightningBolt *lightningBolt)
{
	burn(5);
	onFire++;
	if (onFire == 0) setOnFire(8);
}

void Entity::killed(shared_ptr<LivingEntity> mob)
{
}

bool Entity::checkInTile(double x, double y, double z)
{
	int xTile = Mth::floor(x);
	int yTile = Mth::floor(y);
	int zTile = Mth::floor(z);

	double xd = x - (xTile);
	double yd = y - (yTile);
	double zd = z - (zTile);

	vector<AABB *> *cubes = level->getTileCubes(bb);
	if ( (cubes && !cubes->empty()) || level->isFullAABBTile(xTile, yTile, zTile))
	{
		bool west = !level->isFullAABBTile(xTile - 1, yTile, zTile);
		bool east = !level->isFullAABBTile(xTile + 1, yTile, zTile);
		bool down = !level->isFullAABBTile(xTile, yTile - 1, zTile);
		bool up = !level->isFullAABBTile(xTile, yTile + 1, zTile);
		bool north = !level->isFullAABBTile(xTile, yTile, zTile - 1);
		bool south = !level->isFullAABBTile(xTile, yTile, zTile + 1);

		int dir = 3;
		double closest = 9999;
		if (west && xd < closest)
		{
			closest = xd;
			dir = 0;
		}
		if (east && 1 - xd < closest)
		{
			closest = 1 - xd;
			dir = 1;
		}
		if (up && 1 - yd < closest)
		{
			closest = 1 - yd;
			dir = 3;
		}
		if (north && zd < closest)
		{
			closest = zd;
			dir = 4;
		}
		if (south && 1 - zd < closest)
		{
			closest = 1 - zd;
			dir = 5;
		}

		float speed = random->nextFloat() * 0.2f + 0.1f;
		if (dir == 0) this->xd = -speed;
		if (dir == 1) this->xd = +speed;

		if (dir == 2) this->yd = -speed;
		if (dir == 3) this->yd = +speed;

		if (dir == 4) this->zd = -speed;
		if (dir == 5) this->zd = +speed;

		return true;
	}
	return false;
}

void Entity::makeStuckInWeb()
{
	isStuckInWeb = true;
	fallDistance = 0;
}

wstring Entity::getAName()
{
#ifdef _DEBUG
	wstring id = EntityIO::getEncodeId(shared_from_this());
	if (id.empty()) id = L"generic";
	return L"entity." + id + _toString(entityId);
#else
	return L"";
#endif
}

vector<shared_ptr<Entity> > *Entity::getSubEntities()
{
	return NULL;
}

bool Entity::is(shared_ptr<Entity> other)
{
	return shared_from_this() == other;
}

float Entity::getYHeadRot()
{
	return 0;
}

void Entity::setYHeadRot(float yHeadRot)
{
}

bool Entity::isAttackable()
{
	return true;
}

bool Entity::skipAttackInteraction(shared_ptr<Entity> source)
{
	return false;
}

bool Entity::isInvulnerable()
{
	return invulnerable;
}

void Entity::copyPosition(shared_ptr<Entity> target)
{
	moveTo(target->x, target->y, target->z, target->yRot, target->xRot);
}

void Entity::restoreFrom(shared_ptr<Entity> oldEntity, bool teleporting)
{
	CompoundTag *tag = new CompoundTag();
	oldEntity->saveWithoutId(tag);
	load(tag);
	delete tag;
	changingDimensionDelay = oldEntity->changingDimensionDelay;
	portalEntranceDir = oldEntity->portalEntranceDir;
}

void Entity::changeDimension(int i)
{
	if (level->isClientSide || removed) return;

	MinecraftServer *server = MinecraftServer::getInstance();
	int lastDimension = dimension;
	ServerLevel *oldLevel = server->getLevel(lastDimension);
	ServerLevel *newLevel = server->getLevel(i);

	if (lastDimension == 1 && i == 1)
	{
		newLevel = server->getLevel(0);
	}

	// 4J: Restrictions on what can go through
	{
		// 4J: Some things should just be destroyed when they hit a portal
		if (instanceof(eTYPE_FALLINGTILE))
		{
			removed = true;
			return;
		}

		// 4J: Check server level entity limit (arrows, item entities, experience orbs, etc)
		if (newLevel->atEntityLimit(shared_from_this())) return;

		// 4J: Check level limit on living entities, minecarts and boats
		if (!instanceof(eTYPE_PLAYER) && !newLevel->canCreateMore(GetType(), Level::eSpawnType_Portal)) return;
	}

	// 4J: Definitely sending, set dimension now
	dimension = newLevel->dimension->id;

	level->removeEntity(shared_from_this());
	removed = false;

	server->getPlayers()->repositionAcrossDimension(shared_from_this(), lastDimension, oldLevel, newLevel);
	shared_ptr<Entity> newEntity = EntityIO::newEntity(EntityIO::getEncodeId(shared_from_this()), newLevel);

	if (newEntity != NULL)
	{
		newEntity->restoreFrom(shared_from_this(), true);

		if (lastDimension == 1 && i == 1)
		{
			Pos *spawnPos = newLevel->getSharedSpawnPos();
			spawnPos->y = level->getTopSolidBlock(spawnPos->x, spawnPos->z);
			newEntity->moveTo(spawnPos->x, spawnPos->y, spawnPos->z, newEntity->yRot, newEntity->xRot);
			delete spawnPos;
		}

		newLevel->addEntity(newEntity);
	}

	removed = true;

	oldLevel->resetEmptyTime();
	newLevel->resetEmptyTime();
}

float Entity::getTileExplosionResistance(Explosion *explosion, Level *level, int x, int y, int z, Tile *tile)
{
	return tile->getExplosionResistance(shared_from_this());
}

bool Entity::shouldTileExplode(Explosion *explosion, Level *level, int x, int y, int z, int id, float power)
{
	return true;
}

int Entity::getMaxFallDistance()
{
	return 3;
}

int Entity::getPortalEntranceDir()
{
	return portalEntranceDir;
}

bool Entity::isIgnoringTileTriggers()
{
	return false;
}

bool Entity::displayFireAnimation()
{
	return isOnFire();
}

void Entity::setUUID(const wstring &UUID)
{
	uuid = UUID;
}

wstring Entity::getUUID()
{
	return uuid;
}

bool Entity::isPushedByWater()
{
	return true;
}

wstring Entity::getDisplayName()
{
	return getAName();
}

// 4J: Added to retrieve name that should be sent in ChatPackets (important on Xbox One for players)
wstring Entity::getNetworkName()
{
	return getDisplayName();
}

void Entity::setAnimOverrideBitmask(unsigned int uiBitmask)
{
	m_uiAnimOverrideBitmask=uiBitmask;
	app.DebugPrintf("!!! Setting anim override bitmask to %d\n",uiBitmask);
}
unsigned int Entity::getAnimOverrideBitmask()
{
	if(app.GetGameSettings(eGameSetting_CustomSkinAnim)==0 )
	{
		// We have a force animation for some skins (claptrap)
		// 4J-PB - treat all the eAnim_Disable flags as a force anim
		unsigned int uiIgnoreUserCustomSkinAnimSettingMask=(1<<HumanoidModel::eAnim_ForceAnim) |
			(1<<HumanoidModel::eAnim_DisableRenderArm0) |
			(1<<HumanoidModel::eAnim_DisableRenderArm1) |
			(1<<HumanoidModel::eAnim_DisableRenderTorso) |
			(1<<HumanoidModel::eAnim_DisableRenderLeg0) |
			(1<<HumanoidModel::eAnim_DisableRenderLeg1) |
			(1<<HumanoidModel::eAnim_DisableRenderHair);

		if((m_uiAnimOverrideBitmask & HumanoidModel::m_staticBitmaskIgnorePlayerCustomAnimSetting)!=0)
		{
			return m_uiAnimOverrideBitmask;
		}
		return 0;
	}

	return m_uiAnimOverrideBitmask;
}