    001package net.minecraft.entity;
    002
    003import java.util.HashSet;
    004import java.util.Iterator;
    005import java.util.List;
    006import java.util.Set;
    007
    008import cpw.mods.fml.common.network.FMLNetworkHandler;
    009import net.minecraft.entity.boss.EntityDragon;
    010import net.minecraft.entity.item.EntityBoat;
    011import net.minecraft.entity.item.EntityEnderCrystal;
    012import net.minecraft.entity.item.EntityEnderEye;
    013import net.minecraft.entity.item.EntityEnderPearl;
    014import net.minecraft.entity.item.EntityExpBottle;
    015import net.minecraft.entity.item.EntityFallingSand;
    016import net.minecraft.entity.item.EntityFireworkRocket;
    017import net.minecraft.entity.item.EntityItem;
    018import net.minecraft.entity.item.EntityItemFrame;
    019import net.minecraft.entity.item.EntityMinecart;
    020import net.minecraft.entity.item.EntityPainting;
    021import net.minecraft.entity.item.EntityTNTPrimed;
    022import net.minecraft.entity.item.EntityXPOrb;
    023import net.minecraft.entity.passive.IAnimals;
    024import net.minecraft.entity.player.EntityPlayer;
    025import net.minecraft.entity.player.EntityPlayerMP;
    026import net.minecraft.entity.projectile.EntityArrow;
    027import net.minecraft.entity.projectile.EntityEgg;
    028import net.minecraft.entity.projectile.EntityFireball;
    029import net.minecraft.entity.projectile.EntityFishHook;
    030import net.minecraft.entity.projectile.EntityPotion;
    031import net.minecraft.entity.projectile.EntitySmallFireball;
    032import net.minecraft.entity.projectile.EntitySnowball;
    033import net.minecraft.entity.projectile.EntityWitherSkull;
    034import net.minecraft.item.Item;
    035import net.minecraft.item.ItemMap;
    036import net.minecraft.item.ItemStack;
    037import net.minecraft.network.packet.Packet;
    038import net.minecraft.network.packet.Packet17Sleep;
    039import net.minecraft.network.packet.Packet20NamedEntitySpawn;
    040import net.minecraft.network.packet.Packet23VehicleSpawn;
    041import net.minecraft.network.packet.Packet24MobSpawn;
    042import net.minecraft.network.packet.Packet25EntityPainting;
    043import net.minecraft.network.packet.Packet26EntityExpOrb;
    044import net.minecraft.network.packet.Packet28EntityVelocity;
    045import net.minecraft.network.packet.Packet31RelEntityMove;
    046import net.minecraft.network.packet.Packet32EntityLook;
    047import net.minecraft.network.packet.Packet33RelEntityMoveLook;
    048import net.minecraft.network.packet.Packet34EntityTeleport;
    049import net.minecraft.network.packet.Packet35EntityHeadRotation;
    050import net.minecraft.network.packet.Packet39AttachEntity;
    051import net.minecraft.network.packet.Packet40EntityMetadata;
    052import net.minecraft.network.packet.Packet41EntityEffect;
    053import net.minecraft.network.packet.Packet5PlayerInventory;
    054import net.minecraft.potion.PotionEffect;
    055import net.minecraft.util.MathHelper;
    056import net.minecraft.world.storage.MapData;
    057
    058public class EntityTrackerEntry
    059{
    060    public Entity myEntity;
    061    public int blocksDistanceThreshold;
    062
    063    /** check for sync when ticks % updateFrequency==0 */
    064    public int updateFrequency;
    065    public int lastScaledXPosition;
    066    public int lastScaledYPosition;
    067    public int lastScaledZPosition;
    068    public int lastYaw;
    069    public int lastPitch;
    070    public int lastHeadMotion;
    071    public double motionX;
    072    public double motionY;
    073    public double motionZ;
    074    public int ticks = 0;
    075    private double posX;
    076    private double posY;
    077    private double posZ;
    078
    079    /** set to true on first sendLocationToClients */
    080    private boolean isDataInitialized = false;
    081    private boolean sendVelocityUpdates;
    082
    083    /**
    084     * every 400 ticks a  full teleport packet is sent, rather than just a "move me +x" command, so that position
    085     * remains fully synced.
    086     */
    087    private int ticksSinceLastForcedTeleport = 0;
    088    private Entity field_85178_v;
    089    private boolean ridingEntity = false;
    090    public boolean playerEntitiesUpdated = false;
    091    public Set trackedPlayers = new HashSet();
    092
    093    public EntityTrackerEntry(Entity par1Entity, int par2, int par3, boolean par4)
    094    {
    095        this.myEntity = par1Entity;
    096        this.blocksDistanceThreshold = par2;
    097        this.updateFrequency = par3;
    098        this.sendVelocityUpdates = par4;
    099        this.lastScaledXPosition = MathHelper.floor_double(par1Entity.posX * 32.0D);
    100        this.lastScaledYPosition = MathHelper.floor_double(par1Entity.posY * 32.0D);
    101        this.lastScaledZPosition = MathHelper.floor_double(par1Entity.posZ * 32.0D);
    102        this.lastYaw = MathHelper.floor_float(par1Entity.rotationYaw * 256.0F / 360.0F);
    103        this.lastPitch = MathHelper.floor_float(par1Entity.rotationPitch * 256.0F / 360.0F);
    104        this.lastHeadMotion = MathHelper.floor_float(par1Entity.setRotationYawHead() * 256.0F / 360.0F);
    105    }
    106
    107    public boolean equals(Object par1Obj)
    108    {
    109        return par1Obj instanceof EntityTrackerEntry ? ((EntityTrackerEntry)par1Obj).myEntity.entityId == this.myEntity.entityId : false;
    110    }
    111
    112    public int hashCode()
    113    {
    114        return this.myEntity.entityId;
    115    }
    116
    117    /**
    118     * also sends velocity, rotation, and riding info.
    119     */
    120    public void sendLocationToAllClients(List par1List)
    121    {
    122        this.playerEntitiesUpdated = false;
    123
    124        if (!this.isDataInitialized || this.myEntity.getDistanceSq(this.posX, this.posY, this.posZ) > 16.0D)
    125        {
    126            this.posX = this.myEntity.posX;
    127            this.posY = this.myEntity.posY;
    128            this.posZ = this.myEntity.posZ;
    129            this.isDataInitialized = true;
    130            this.playerEntitiesUpdated = true;
    131            this.sendEventsToPlayers(par1List);
    132        }
    133
    134        if (this.field_85178_v != this.myEntity.ridingEntity)
    135        {
    136            this.field_85178_v = this.myEntity.ridingEntity;
    137            this.sendPacketToAllTrackingPlayers(new Packet39AttachEntity(this.myEntity, this.myEntity.ridingEntity));
    138        }
    139
    140        if (this.myEntity instanceof EntityItemFrame && this.ticks % 10 == 0)
    141        {
    142            EntityItemFrame var23 = (EntityItemFrame)this.myEntity;
    143            ItemStack var24 = var23.getDisplayedItem();
    144
    145            if (var24 != null && var24.getItem() instanceof ItemMap)
    146            {
    147                MapData var26 = Item.map.getMapData(var24, this.myEntity.worldObj);
    148                Iterator var29 = par1List.iterator();
    149
    150                while (var29.hasNext())
    151                {
    152                    EntityPlayer var30 = (EntityPlayer)var29.next();
    153                    EntityPlayerMP var31 = (EntityPlayerMP)var30;
    154                    var26.updateVisiblePlayers(var31, var24);
    155
    156                    if (var31.playerNetServerHandler.packetSize() <= 5)
    157                    {
    158                        Packet var32 = Item.map.createMapDataPacket(var24, this.myEntity.worldObj, var31);
    159
    160                        if (var32 != null)
    161                        {
    162                            var31.playerNetServerHandler.sendPacketToPlayer(var32);
    163                        }
    164                    }
    165                }
    166            }
    167
    168            DataWatcher var28 = this.myEntity.getDataWatcher();
    169
    170            if (var28.hasChanges())
    171            {
    172                this.sendPacketToAllAssociatedPlayers(new Packet40EntityMetadata(this.myEntity.entityId, var28, false));
    173            }
    174        }
    175        else if (this.ticks++ % this.updateFrequency == 0 || this.myEntity.isAirBorne)
    176        {
    177            int var2;
    178            int var3;
    179
    180            if (this.myEntity.ridingEntity == null)
    181            {
    182                ++this.ticksSinceLastForcedTeleport;
    183                var2 = this.myEntity.myEntitySize.multiplyBy32AndRound(this.myEntity.posX);
    184                var3 = MathHelper.floor_double(this.myEntity.posY * 32.0D);
    185                int var4 = this.myEntity.myEntitySize.multiplyBy32AndRound(this.myEntity.posZ);
    186                int var5 = MathHelper.floor_float(this.myEntity.rotationYaw * 256.0F / 360.0F);
    187                int var6 = MathHelper.floor_float(this.myEntity.rotationPitch * 256.0F / 360.0F);
    188                int var7 = var2 - this.lastScaledXPosition;
    189                int var8 = var3 - this.lastScaledYPosition;
    190                int var9 = var4 - this.lastScaledZPosition;
    191                Object var10 = null;
    192                boolean var11 = Math.abs(var7) >= 4 || Math.abs(var8) >= 4 || Math.abs(var9) >= 4 || this.ticks % 60 == 0;
    193                boolean var12 = Math.abs(var5 - this.lastYaw) >= 4 || Math.abs(var6 - this.lastPitch) >= 4;
    194
    195                if (var7 >= -128 && var7 < 128 && var8 >= -128 && var8 < 128 && var9 >= -128 && var9 < 128 && this.ticksSinceLastForcedTeleport <= 400 && !this.ridingEntity)
    196                {
    197                    if (var11 && var12)
    198                    {
    199                        var10 = new Packet33RelEntityMoveLook(this.myEntity.entityId, (byte)var7, (byte)var8, (byte)var9, (byte)var5, (byte)var6);
    200                    }
    201                    else if (var11)
    202                    {
    203                        var10 = new Packet31RelEntityMove(this.myEntity.entityId, (byte)var7, (byte)var8, (byte)var9);
    204                    }
    205                    else if (var12)
    206                    {
    207                        var10 = new Packet32EntityLook(this.myEntity.entityId, (byte)var5, (byte)var6);
    208                    }
    209                }
    210                else
    211                {
    212                    this.ticksSinceLastForcedTeleport = 0;
    213                    var10 = new Packet34EntityTeleport(this.myEntity.entityId, var2, var3, var4, (byte)var5, (byte)var6);
    214                }
    215
    216                if (this.sendVelocityUpdates)
    217                {
    218                    double var13 = this.myEntity.motionX - this.motionX;
    219                    double var15 = this.myEntity.motionY - this.motionY;
    220                    double var17 = this.myEntity.motionZ - this.motionZ;
    221                    double var19 = 0.02D;
    222                    double var21 = var13 * var13 + var15 * var15 + var17 * var17;
    223
    224                    if (var21 > var19 * var19 || var21 > 0.0D && this.myEntity.motionX == 0.0D && this.myEntity.motionY == 0.0D && this.myEntity.motionZ == 0.0D)
    225                    {
    226                        this.motionX = this.myEntity.motionX;
    227                        this.motionY = this.myEntity.motionY;
    228                        this.motionZ = this.myEntity.motionZ;
    229                        this.sendPacketToAllTrackingPlayers(new Packet28EntityVelocity(this.myEntity.entityId, this.motionX, this.motionY, this.motionZ));
    230                    }
    231                }
    232
    233                if (var10 != null)
    234                {
    235                    this.sendPacketToAllTrackingPlayers((Packet)var10);
    236                }
    237
    238                DataWatcher var33 = this.myEntity.getDataWatcher();
    239
    240                if (var33.hasChanges())
    241                {
    242                    this.sendPacketToAllAssociatedPlayers(new Packet40EntityMetadata(this.myEntity.entityId, var33, false));
    243                }
    244
    245                if (var11)
    246                {
    247                    this.lastScaledXPosition = var2;
    248                    this.lastScaledYPosition = var3;
    249                    this.lastScaledZPosition = var4;
    250                }
    251
    252                if (var12)
    253                {
    254                    this.lastYaw = var5;
    255                    this.lastPitch = var6;
    256                }
    257
    258                this.ridingEntity = false;
    259            }
    260            else
    261            {
    262                var2 = MathHelper.floor_float(this.myEntity.rotationYaw * 256.0F / 360.0F);
    263                var3 = MathHelper.floor_float(this.myEntity.rotationPitch * 256.0F / 360.0F);
    264                boolean var25 = Math.abs(var2 - this.lastYaw) >= 4 || Math.abs(var3 - this.lastPitch) >= 4;
    265
    266                if (var25)
    267                {
    268                    this.sendPacketToAllTrackingPlayers(new Packet32EntityLook(this.myEntity.entityId, (byte)var2, (byte)var3));
    269                    this.lastYaw = var2;
    270                    this.lastPitch = var3;
    271                }
    272
    273                this.lastScaledXPosition = this.myEntity.myEntitySize.multiplyBy32AndRound(this.myEntity.posX);
    274                this.lastScaledYPosition = MathHelper.floor_double(this.myEntity.posY * 32.0D);
    275                this.lastScaledZPosition = this.myEntity.myEntitySize.multiplyBy32AndRound(this.myEntity.posZ);
    276                DataWatcher var27 = this.myEntity.getDataWatcher();
    277
    278                if (var27.hasChanges())
    279                {
    280                    this.sendPacketToAllAssociatedPlayers(new Packet40EntityMetadata(this.myEntity.entityId, var27, false));
    281                }
    282
    283                this.ridingEntity = true;
    284            }
    285
    286            var2 = MathHelper.floor_float(this.myEntity.setRotationYawHead() * 256.0F / 360.0F);
    287
    288            if (Math.abs(var2 - this.lastHeadMotion) >= 4)
    289            {
    290                this.sendPacketToAllTrackingPlayers(new Packet35EntityHeadRotation(this.myEntity.entityId, (byte)var2));
    291                this.lastHeadMotion = var2;
    292            }
    293
    294            this.myEntity.isAirBorne = false;
    295        }
    296
    297        if (this.myEntity.velocityChanged)
    298        {
    299            this.sendPacketToAllAssociatedPlayers(new Packet28EntityVelocity(this.myEntity));
    300            this.myEntity.velocityChanged = false;
    301        }
    302    }
    303
    304    /**
    305     * if this is a player, then it is not informed
    306     */
    307    public void sendPacketToAllTrackingPlayers(Packet par1Packet)
    308    {
    309        Iterator var2 = this.trackedPlayers.iterator();
    310
    311        while (var2.hasNext())
    312        {
    313            EntityPlayerMP var3 = (EntityPlayerMP)var2.next();
    314            var3.playerNetServerHandler.sendPacketToPlayer(par1Packet);
    315        }
    316    }
    317
    318    /**
    319     * if this is a player, then it recieves the message also
    320     */
    321    public void sendPacketToAllAssociatedPlayers(Packet par1Packet)
    322    {
    323        this.sendPacketToAllTrackingPlayers(par1Packet);
    324
    325        if (this.myEntity instanceof EntityPlayerMP)
    326        {
    327            ((EntityPlayerMP)this.myEntity).playerNetServerHandler.sendPacketToPlayer(par1Packet);
    328        }
    329    }
    330
    331    public void informAllAssociatedPlayersOfItemDestruction()
    332    {
    333        Iterator var1 = this.trackedPlayers.iterator();
    334
    335        while (var1.hasNext())
    336        {
    337            EntityPlayerMP var2 = (EntityPlayerMP)var1.next();
    338            var2.destroyedItemsNetCache.add(Integer.valueOf(this.myEntity.entityId));
    339        }
    340    }
    341
    342    public void removeFromWatchingList(EntityPlayerMP par1EntityPlayerMP)
    343    {
    344        if (this.trackedPlayers.contains(par1EntityPlayerMP))
    345        {
    346            par1EntityPlayerMP.destroyedItemsNetCache.add(Integer.valueOf(this.myEntity.entityId));
    347            this.trackedPlayers.remove(par1EntityPlayerMP);
    348        }
    349    }
    350
    351    /**
    352     * if the player is more than the distance threshold (typically 64) then the player is removed instead
    353     */
    354    public void tryStartWachingThis(EntityPlayerMP par1EntityPlayerMP)
    355    {
    356        if (par1EntityPlayerMP != this.myEntity)
    357        {
    358            double var2 = par1EntityPlayerMP.posX - (double)(this.lastScaledXPosition / 32);
    359            double var4 = par1EntityPlayerMP.posZ - (double)(this.lastScaledZPosition / 32);
    360
    361            if (var2 >= (double)(-this.blocksDistanceThreshold) && var2 <= (double)this.blocksDistanceThreshold && var4 >= (double)(-this.blocksDistanceThreshold) && var4 <= (double)this.blocksDistanceThreshold)
    362            {
    363                if (!this.trackedPlayers.contains(par1EntityPlayerMP) && this.isPlayerWatchingThisChunk(par1EntityPlayerMP))
    364                {
    365                    this.trackedPlayers.add(par1EntityPlayerMP);
    366                    Packet var6 = this.getPacketForThisEntity();
    367                    par1EntityPlayerMP.playerNetServerHandler.sendPacketToPlayer(var6);
    368
    369                    if (!this.myEntity.getDataWatcher().func_92085_d())
    370                    {
    371                        par1EntityPlayerMP.playerNetServerHandler.sendPacketToPlayer(new Packet40EntityMetadata(this.myEntity.entityId, this.myEntity.getDataWatcher(), true));
    372                    }
    373
    374                    this.motionX = this.myEntity.motionX;
    375                    this.motionY = this.myEntity.motionY;
    376                    this.motionZ = this.myEntity.motionZ;
    377
    378                    int posX = MathHelper.floor_double(this.myEntity.posX * 32.0D);
    379                    int posY = MathHelper.floor_double(this.myEntity.posY * 32.0D);
    380                    int posZ = MathHelper.floor_double(this.myEntity.posZ * 32.0D);
    381                    if (posX != this.lastScaledXPosition || posY != this.lastScaledYPosition || posZ != this.lastScaledZPosition)
    382                    {
    383                        FMLNetworkHandler.makeEntitySpawnAdjustment(this.myEntity.entityId, par1EntityPlayerMP, this.lastScaledXPosition, this.lastScaledYPosition, this.lastScaledZPosition);
    384                    }
    385
    386                    if (this.sendVelocityUpdates && !(var6 instanceof Packet24MobSpawn))
    387                    {
    388                        par1EntityPlayerMP.playerNetServerHandler.sendPacketToPlayer(new Packet28EntityVelocity(this.myEntity.entityId, this.myEntity.motionX, this.myEntity.motionY, this.myEntity.motionZ));
    389                    }
    390
    391                    if (this.myEntity.ridingEntity != null)
    392                    {
    393                        par1EntityPlayerMP.playerNetServerHandler.sendPacketToPlayer(new Packet39AttachEntity(this.myEntity, this.myEntity.ridingEntity));
    394                    }
    395
    396                    if (this.myEntity instanceof EntityLiving)
    397                    {
    398                        for (int var7 = 0; var7 < 5; ++var7)
    399                        {
    400                            ItemStack var8 = ((EntityLiving)this.myEntity).getCurrentItemOrArmor(var7);
    401
    402                            if (var8 != null)
    403                            {
    404                                par1EntityPlayerMP.playerNetServerHandler.sendPacketToPlayer(new Packet5PlayerInventory(this.myEntity.entityId, var7, var8));
    405                            }
    406                        }
    407                    }
    408
    409                    if (this.myEntity instanceof EntityPlayer)
    410                    {
    411                        EntityPlayer var11 = (EntityPlayer)this.myEntity;
    412
    413                        if (var11.isPlayerSleeping())
    414                        {
    415                            par1EntityPlayerMP.playerNetServerHandler.sendPacketToPlayer(new Packet17Sleep(this.myEntity, 0, MathHelper.floor_double(this.myEntity.posX), MathHelper.floor_double(this.myEntity.posY), MathHelper.floor_double(this.myEntity.posZ)));
    416                        }
    417                    }
    418
    419                    if (this.myEntity instanceof EntityLiving)
    420                    {
    421                        EntityLiving var10 = (EntityLiving)this.myEntity;
    422                        Iterator var12 = var10.getActivePotionEffects().iterator();
    423
    424                        while (var12.hasNext())
    425                        {
    426                            PotionEffect var9 = (PotionEffect)var12.next();
    427                            par1EntityPlayerMP.playerNetServerHandler.sendPacketToPlayer(new Packet41EntityEffect(this.myEntity.entityId, var9));
    428                        }
    429                    }
    430                }
    431            }
    432            else if (this.trackedPlayers.contains(par1EntityPlayerMP))
    433            {
    434                this.trackedPlayers.remove(par1EntityPlayerMP);
    435                par1EntityPlayerMP.destroyedItemsNetCache.add(Integer.valueOf(this.myEntity.entityId));
    436            }
    437        }
    438    }
    439
    440    private boolean isPlayerWatchingThisChunk(EntityPlayerMP par1EntityPlayerMP)
    441    {
    442        return par1EntityPlayerMP.getServerForPlayer().getPlayerManager().isPlayerWatchingChunk(par1EntityPlayerMP, this.myEntity.chunkCoordX, this.myEntity.chunkCoordZ);
    443    }
    444
    445    public void sendEventsToPlayers(List par1List)
    446    {
    447        for (int var2 = 0; var2 < par1List.size(); ++var2)
    448        {
    449            this.tryStartWachingThis((EntityPlayerMP)par1List.get(var2));
    450        }
    451    }
    452
    453    private Packet getPacketForThisEntity()
    454    {
    455        if (this.myEntity.isDead)
    456        {
    457            System.out.println("Fetching addPacket for removed entity");
    458        }
    459
    460        Packet pkt = FMLNetworkHandler.getEntitySpawningPacket(this.myEntity);
    461
    462        if (pkt != null)
    463        {
    464            return pkt;
    465        }
    466
    467        if (this.myEntity instanceof EntityItem)
    468        {
    469            return new Packet23VehicleSpawn(this.myEntity, 2, 1);
    470        }
    471        else if (this.myEntity instanceof EntityPlayerMP)
    472        {
    473            return new Packet20NamedEntitySpawn((EntityPlayer)this.myEntity);
    474        }
    475        else
    476        {
    477            if (this.myEntity instanceof EntityMinecart)
    478            {
    479                EntityMinecart var1 = (EntityMinecart)this.myEntity;
    480
    481                if (var1.minecartType == 0)
    482                {
    483                    return new Packet23VehicleSpawn(this.myEntity, 10);
    484                }
    485
    486                if (var1.minecartType == 1)
    487                {
    488                    return new Packet23VehicleSpawn(this.myEntity, 11);
    489                }
    490
    491                if (var1.minecartType == 2)
    492                {
    493                    return new Packet23VehicleSpawn(this.myEntity, 12);
    494                }
    495            }
    496
    497            if (this.myEntity instanceof EntityBoat)
    498            {
    499                return new Packet23VehicleSpawn(this.myEntity, 1);
    500            }
    501            else if (!(this.myEntity instanceof IAnimals) && !(this.myEntity instanceof EntityDragon))
    502            {
    503                if (this.myEntity instanceof EntityFishHook)
    504                {
    505                    EntityPlayer var8 = ((EntityFishHook)this.myEntity).angler;
    506                    return new Packet23VehicleSpawn(this.myEntity, 90, var8 != null ? var8.entityId : this.myEntity.entityId);
    507                }
    508                else if (this.myEntity instanceof EntityArrow)
    509                {
    510                    Entity var7 = ((EntityArrow)this.myEntity).shootingEntity;
    511                    return new Packet23VehicleSpawn(this.myEntity, 60, var7 != null ? var7.entityId : this.myEntity.entityId);
    512                }
    513                else if (this.myEntity instanceof EntitySnowball)
    514                {
    515                    return new Packet23VehicleSpawn(this.myEntity, 61);
    516                }
    517                else if (this.myEntity instanceof EntityPotion)
    518                {
    519                    return new Packet23VehicleSpawn(this.myEntity, 73, ((EntityPotion)this.myEntity).getPotionDamage());
    520                }
    521                else if (this.myEntity instanceof EntityExpBottle)
    522                {
    523                    return new Packet23VehicleSpawn(this.myEntity, 75);
    524                }
    525                else if (this.myEntity instanceof EntityEnderPearl)
    526                {
    527                    return new Packet23VehicleSpawn(this.myEntity, 65);
    528                }
    529                else if (this.myEntity instanceof EntityEnderEye)
    530                {
    531                    return new Packet23VehicleSpawn(this.myEntity, 72);
    532                }
    533                else if (this.myEntity instanceof EntityFireworkRocket)
    534                {
    535                    return new Packet23VehicleSpawn(this.myEntity, 76);
    536                }
    537                else
    538                {
    539                    Packet23VehicleSpawn var2;
    540
    541                    if (this.myEntity instanceof EntityFireball)
    542                    {
    543                        EntityFireball var6 = (EntityFireball)this.myEntity;
    544                        var2 = null;
    545                        byte var3 = 63;
    546
    547                        if (this.myEntity instanceof EntitySmallFireball)
    548                        {
    549                            var3 = 64;
    550                        }
    551                        else if (this.myEntity instanceof EntityWitherSkull)
    552                        {
    553                            var3 = 66;
    554                        }
    555
    556                        if (var6.shootingEntity != null)
    557                        {
    558                            var2 = new Packet23VehicleSpawn(this.myEntity, var3, ((EntityFireball)this.myEntity).shootingEntity.entityId);
    559                        }
    560                        else
    561                        {
    562                            var2 = new Packet23VehicleSpawn(this.myEntity, var3, 0);
    563                        }
    564
    565                        var2.speedX = (int)(var6.accelerationX * 8000.0D);
    566                        var2.speedY = (int)(var6.accelerationY * 8000.0D);
    567                        var2.speedZ = (int)(var6.accelerationZ * 8000.0D);
    568                        return var2;
    569                    }
    570                    else if (this.myEntity instanceof EntityEgg)
    571                    {
    572                        return new Packet23VehicleSpawn(this.myEntity, 62);
    573                    }
    574                    else if (this.myEntity instanceof EntityTNTPrimed)
    575                    {
    576                        return new Packet23VehicleSpawn(this.myEntity, 50);
    577                    }
    578                    else if (this.myEntity instanceof EntityEnderCrystal)
    579                    {
    580                        return new Packet23VehicleSpawn(this.myEntity, 51);
    581                    }
    582                    else if (this.myEntity instanceof EntityFallingSand)
    583                    {
    584                        EntityFallingSand var5 = (EntityFallingSand)this.myEntity;
    585                        return new Packet23VehicleSpawn(this.myEntity, 70, var5.blockID | var5.metadata << 16);
    586                    }
    587                    else if (this.myEntity instanceof EntityPainting)
    588                    {
    589                        return new Packet25EntityPainting((EntityPainting)this.myEntity);
    590                    }
    591                    else if (this.myEntity instanceof EntityItemFrame)
    592                    {
    593                        EntityItemFrame var4 = (EntityItemFrame)this.myEntity;
    594                        var2 = new Packet23VehicleSpawn(this.myEntity, 71, var4.hangingDirection);
    595                        var2.xPosition = MathHelper.floor_float((float)(var4.xPosition * 32));
    596                        var2.yPosition = MathHelper.floor_float((float)(var4.yPosition * 32));
    597                        var2.zPosition = MathHelper.floor_float((float)(var4.zPosition * 32));
    598                        return var2;
    599                    }
    600                    else if (this.myEntity instanceof EntityXPOrb)
    601                    {
    602                        return new Packet26EntityExpOrb((EntityXPOrb)this.myEntity);
    603                    }
    604                    else
    605                    {
    606                        throw new IllegalArgumentException("Don\'t know how to add " + this.myEntity.getClass() + "!");
    607                    }
    608                }
    609            }
    610            else
    611            {
    612                this.lastHeadMotion = MathHelper.floor_float(this.myEntity.setRotationYawHead() * 256.0F / 360.0F);
    613                return new Packet24MobSpawn((EntityLiving)this.myEntity);
    614            }
    615        }
    616    }
    617
    618    public void removePlayerFromTracker(EntityPlayerMP par1EntityPlayerMP)
    619    {
    620        if (this.trackedPlayers.contains(par1EntityPlayerMP))
    621        {
    622            this.trackedPlayers.remove(par1EntityPlayerMP);
    623            par1EntityPlayerMP.destroyedItemsNetCache.add(Integer.valueOf(this.myEntity.entityId));
    624        }
    625    }
    626}