    001    package net.minecraft.entity.item;
    002
    003    import cpw.mods.fml.relauncher.Side;
    004    import cpw.mods.fml.relauncher.SideOnly;
    005
    006    import java.util.ArrayList;
    007    import java.util.List;
    008    import net.minecraft.block.Block;
    009    import net.minecraft.block.BlockRail;
    010    import net.minecraft.entity.Entity;
    011    import net.minecraft.entity.EntityLiving;
    012    import net.minecraft.entity.monster.EntityIronGolem;
    013    import net.minecraft.entity.player.EntityPlayer;
    014    import net.minecraft.inventory.IInventory;
    015    import net.minecraft.item.Item;
    016    import net.minecraft.item.ItemStack;
    017    import net.minecraft.nbt.NBTTagCompound;
    018    import net.minecraft.nbt.NBTTagList;
    019    import net.minecraft.server.MinecraftServer;
    020    import net.minecraft.server.gui.IUpdatePlayerListBox;
    021    import net.minecraft.util.AxisAlignedBB;
    022    import net.minecraft.util.DamageSource;
    023    import net.minecraft.util.MathHelper;
    024    import net.minecraft.util.Vec3;
    025    import net.minecraft.world.World;
    026    import net.minecraft.world.WorldServer;
    027
    028    import net.minecraftforge.common.IMinecartCollisionHandler;
    029    import net.minecraftforge.common.MinecartRegistry;
    030    import net.minecraftforge.common.MinecraftForge;
    031    import net.minecraftforge.event.entity.minecart.*;
    032
    033    public class EntityMinecart extends Entity implements IInventory
    034    {
    035        /** Array of item stacks stored in minecart (for storage minecarts). */
    036        protected ItemStack[] cargoItems;
    037        protected int fuel;
    038        protected boolean field_70499_f;
    039
    040        /** The type of minecart, 2 for powered, 1 for storage. */
    041        public int minecartType;
    042        public double pushX;
    043        public double pushZ;
    044        protected final IUpdatePlayerListBox field_82344_g;
    045        protected boolean field_82345_h;
    046        protected static final int[][][] field_70500_g = new int[][][] {{{0, 0, -1}, {0, 0, 1}}, {{ -1, 0, 0}, {1, 0, 0}}, {{ -1, -1, 0}, {1, 0, 0}}, {{ -1, 0, 0}, {1, -1, 0}}, {{0, 0, -1}, {0, -1, 1}}, {{0, -1, -1}, {0, 0, 1}}, {{0, 0, 1}, {1, 0, 0}}, {{0, 0, 1}, { -1, 0, 0}}, {{0, 0, -1}, { -1, 0, 0}}, {{0, 0, -1}, {1, 0, 0}}};
    047
    048        /** appears to be the progress of the turn */
    049        protected int turnProgress;
    050        protected double minecartX;
    051        protected double minecartY;
    052        protected double minecartZ;
    053        protected double minecartYaw;
    054        protected double minecartPitch;
    055        @SideOnly(Side.CLIENT)
    056        protected double velocityX;
    057        @SideOnly(Side.CLIENT)
    058        protected double velocityY;
    059        @SideOnly(Side.CLIENT)
    060        protected double velocityZ;
    061
    062        /* Forge: Minecart Compatibility Layer Integration. */
    063        public static float defaultMaxSpeedRail = 0.4f;
    064        public static float defaultMaxSpeedGround = 0.4f;
    065        public static float defaultMaxSpeedAirLateral = 0.4f;
    066        public static float defaultMaxSpeedAirVertical = -1f;
    067        public static double defaultDragRidden = 0.996999979019165D;
    068        public static double defaultDragEmpty = 0.9599999785423279D;
    069        public static double defaultDragAir = 0.94999998807907104D;
    070        protected boolean canUseRail = true;
    071        protected boolean canBePushed = true;
    072        private static IMinecartCollisionHandler collisionHandler = null;
    073
    074        /* Instance versions of the above physics properties */
    075        protected float maxSpeedRail;
    076        protected float maxSpeedGround;
    077        protected float maxSpeedAirLateral;
    078        protected float maxSpeedAirVertical;
    079        protected double dragAir;
    080
    081        public EntityMinecart(World par1World)
    082        {
    083            super(par1World);
    084            this.cargoItems = new ItemStack[36];
    085            this.fuel = 0;
    086            this.field_70499_f = false;
    087            this.field_82345_h = true;
    088            this.preventEntitySpawning = true;
    089            this.setSize(0.98F, 0.7F);
    090            this.yOffset = this.height / 2.0F;
    091            this.field_82344_g = par1World != null ? par1World.func_82735_a(this) : null;
    092
    093            maxSpeedRail = defaultMaxSpeedRail;
    094            maxSpeedGround = defaultMaxSpeedGround;
    095            maxSpeedAirLateral = defaultMaxSpeedAirLateral;
    096            maxSpeedAirVertical = defaultMaxSpeedAirVertical;
    097            dragAir = defaultDragAir;
    098        }
    099
    100        public EntityMinecart(World world, int type)
    101        {
    102            this(world);
    103            minecartType = type;
    104        }
    105
    106        /**
    107         * returns if this entity triggers Block.onEntityWalking on the blocks they walk on. used for spiders and wolves to
    108         * prevent them from trampling crops
    109         */
    110        protected boolean canTriggerWalking()
    111        {
    112            return false;
    113        }
    114
    115        protected void entityInit()
    116        {
    117            this.dataWatcher.addObject(16, new Byte((byte)0));
    118            this.dataWatcher.addObject(17, new Integer(0));
    119            this.dataWatcher.addObject(18, new Integer(1));
    120            this.dataWatcher.addObject(19, new Integer(0));
    121        }
    122
    123        /**
    124         * Returns a boundingBox used to collide the entity with other entities and blocks. This enables the entity to be
    125         * pushable on contact, like boats or minecarts.
    126         */
    127        public AxisAlignedBB getCollisionBox(Entity par1Entity)
    128        {
    129            if (getCollisionHandler() != null)
    130            {
    131                return getCollisionHandler().getCollisionBox(this, par1Entity);
    132            }
    133            return par1Entity.canBePushed() ? par1Entity.boundingBox : null;
    134        }
    135
    136        /**
    137         * returns the bounding box for this entity
    138         */
    139        public AxisAlignedBB getBoundingBox()
    140        {
    141            if (getCollisionHandler() != null)
    142            {
    143                return getCollisionHandler().getBoundingBox(this);
    144            }
    145            return null;
    146        }
    147
    148        /**
    149         * Returns true if this entity should push and be pushed by other entities when colliding.
    150         */
    151        public boolean canBePushed()
    152        {
    153            return canBePushed;
    154        }
    155
    156        public EntityMinecart(World par1World, double par2, double par4, double par6, int par8)
    157        {
    158            this(par1World);
    159            this.setPosition(par2, par4 + (double)this.yOffset, par6);
    160            this.motionX = 0.0D;
    161            this.motionY = 0.0D;
    162            this.motionZ = 0.0D;
    163            this.prevPosX = par2;
    164            this.prevPosY = par4;
    165            this.prevPosZ = par6;
    166            this.minecartType = par8;
    167        }
    168
    169        /**
    170         * Returns the Y offset from the entity's position for any entity riding this one.
    171         */
    172        public double getMountedYOffset()
    173        {
    174            return (double)this.height * 0.0D - 0.30000001192092896D;
    175        }
    176
    177        /**
    178         * Called when the entity is attacked.
    179         */
    180        public boolean attackEntityFrom(DamageSource par1DamageSource, int par2)
    181        {
    182            if (!this.worldObj.isRemote && !this.isDead)
    183            {
    184                if (this.func_85032_ar())
    185                {
    186                    return false;
    187                }
    188                else
    189                {
    190                    this.func_70494_i(-this.func_70493_k());
    191                    this.func_70497_h(10);
    192                    this.setBeenAttacked();
    193                    this.setDamage(this.getDamage() + par2 * 10);
    194
    195                    if (par1DamageSource.getEntity() instanceof EntityPlayer && ((EntityPlayer)par1DamageSource.getEntity()).capabilities.isCreativeMode)
    196                    {
    197                        this.setDamage(100);
    198                    }
    199
    200                    if (this.getDamage() > 40)
    201                    {
    202                        if (this.riddenByEntity != null)
    203                        {
    204                            this.riddenByEntity.mountEntity(this);
    205                        }
    206
    207                        this.setDead();
    208                        dropCartAsItem();
    209                    }
    210
    211                    return true;
    212                }
    213            }
    214            else
    215            {
    216                return true;
    217            }
    218        }
    219
    220        @SideOnly(Side.CLIENT)
    221
    222        /**
    223         * Setups the entity to do the hurt animation. Only used by packets in multiplayer.
    224         */
    225        public void performHurtAnimation()
    226        {
    227            this.func_70494_i(-this.func_70493_k());
    228            this.func_70497_h(10);
    229            this.setDamage(this.getDamage() + this.getDamage() * 10);
    230        }
    231
    232        /**
    233         * Returns true if other Entities should be prevented from moving through this Entity.
    234         */
    235        public boolean canBeCollidedWith()
    236        {
    237            return !this.isDead;
    238        }
    239
    240        /**
    241         * Will get destroyed next tick.
    242         */
    243        public void setDead()
    244        {
    245            if (this.field_82345_h)
    246            {
    247                for (int var1 = 0; var1 < this.getSizeInventory(); ++var1)
    248                {
    249                    ItemStack var2 = this.getStackInSlot(var1);
    250
    251                    if (var2 != null)
    252                    {
    253                        float var3 = this.rand.nextFloat() * 0.8F + 0.1F;
    254                        float var4 = this.rand.nextFloat() * 0.8F + 0.1F;
    255                        float var5 = this.rand.nextFloat() * 0.8F + 0.1F;
    256
    257                        while (var2.stackSize > 0)
    258                        {
    259                            int var6 = this.rand.nextInt(21) + 10;
    260
    261                            if (var6 > var2.stackSize)
    262                            {
    263                                var6 = var2.stackSize;
    264                            }
    265
    266                            var2.stackSize -= var6;
    267                            EntityItem var7 = new EntityItem(this.worldObj, this.posX + (double)var3, this.posY + (double)var4, this.posZ + (double)var5, new ItemStack(var2.itemID, var6, var2.getItemDamage()));
    268
    269                            if (var2.hasTagCompound())
    270                            {
    271                                var7.func_92014_d().setTagCompound((NBTTagCompound)var2.getTagCompound().copy());
    272                            }
    273
    274                            float var8 = 0.05F;
    275                            var7.motionX = (double)((float)this.rand.nextGaussian() * var8);
    276                            var7.motionY = (double)((float)this.rand.nextGaussian() * var8 + 0.2F);
    277                            var7.motionZ = (double)((float)this.rand.nextGaussian() * var8);
    278                            this.worldObj.spawnEntityInWorld(var7);
    279                        }
    280                    }
    281                }
    282            }
    283
    284            super.setDead();
    285
    286            if (this.field_82344_g != null)
    287            {
    288                this.field_82344_g.update();
    289            }
    290        }
    291
    292        /**
    293         * Teleports the entity to another dimension. Params: Dimension number to teleport to
    294         */
    295        public void travelToDimension(int par1)
    296        {
    297            this.field_82345_h = false;
    298            super.travelToDimension(par1);
    299        }
    300
    301        /**
    302         * Called to update the entity's position/logic.
    303         */
    304        public void onUpdate()
    305        {
    306            if (this.field_82344_g != null)
    307            {
    308                this.field_82344_g.update();
    309            }
    310
    311            if (this.func_70496_j() > 0)
    312            {
    313                this.func_70497_h(this.func_70496_j() - 1);
    314            }
    315
    316            if (this.getDamage() > 0)
    317            {
    318                this.setDamage(this.getDamage() - 1);
    319            }
    320
    321            if (this.posY < -64.0D)
    322            {
    323                this.kill();
    324            }
    325
    326            if (this.isMinecartPowered() && this.rand.nextInt(4) == 0 && minecartType == 2 && getClass() == EntityMinecart.class)
    327            {
    328                this.worldObj.spawnParticle("largesmoke", this.posX, this.posY + 0.8D, this.posZ, 0.0D, 0.0D, 0.0D);
    329            }
    330
    331            int var2;
    332
    333            if (!this.worldObj.isRemote && this.worldObj instanceof WorldServer)
    334            {
    335                this.worldObj.theProfiler.startSection("portal");
    336                MinecraftServer var1 = ((WorldServer)this.worldObj).getMinecraftServer();
    337                var2 = this.getMaxInPortalTime();
    338
    339                if (this.inPortal)
    340                {
    341                    if (var1.getAllowNether())
    342                    {
    343                        if (this.ridingEntity == null && this.field_82153_h++ >= var2)
    344                        {
    345                            this.field_82153_h = var2;
    346                            this.timeUntilPortal = this.getPortalCooldown();
    347                            byte var3;
    348
    349                            if (this.worldObj.provider.dimensionId == -1)
    350                            {
    351                                var3 = 0;
    352                            }
    353                            else
    354                            {
    355                                var3 = -1;
    356                            }
    357
    358                            this.travelToDimension(var3);
    359                        }
    360
    361                        this.inPortal = false;
    362                    }
    363                }
    364                else
    365                {
    366                    if (this.field_82153_h > 0)
    367                    {
    368                        this.field_82153_h -= 4;
    369                    }
    370
    371                    if (this.field_82153_h < 0)
    372                    {
    373                        this.field_82153_h = 0;
    374                    }
    375                }
    376
    377                if (this.timeUntilPortal > 0)
    378                {
    379                    --this.timeUntilPortal;
    380                }
    381
    382                this.worldObj.theProfiler.endSection();
    383            }
    384
    385            if (this.worldObj.isRemote)
    386            {
    387                if (this.turnProgress > 0)
    388                {
    389                    double var46 = this.posX + (this.minecartX - this.posX) / (double)this.turnProgress;
    390                    double var48 = this.posY + (this.minecartY - this.posY) / (double)this.turnProgress;
    391                    double var5 = this.posZ + (this.minecartZ - this.posZ) / (double)this.turnProgress;
    392                    double var7 = MathHelper.wrapAngleTo180_double(this.minecartYaw - (double)this.rotationYaw);
    393                    this.rotationYaw = (float)((double)this.rotationYaw + var7 / (double)this.turnProgress);
    394                    this.rotationPitch = (float)((double)this.rotationPitch + (this.minecartPitch - (double)this.rotationPitch) / (double)this.turnProgress);
    395                    --this.turnProgress;
    396                    this.setPosition(var46, var48, var5);
    397                    this.setRotation(this.rotationYaw, this.rotationPitch);
    398                }
    399                else
    400                {
    401                    this.setPosition(this.posX, this.posY, this.posZ);
    402                    this.setRotation(this.rotationYaw, this.rotationPitch);
    403                }
    404            }
    405            else
    406            {
    407                this.prevPosX = this.posX;
    408                this.prevPosY = this.posY;
    409                this.prevPosZ = this.posZ;
    410                this.motionY -= 0.03999999910593033D;
    411                int var45 = MathHelper.floor_double(this.posX);
    412                var2 = MathHelper.floor_double(this.posY);
    413                int var47 = MathHelper.floor_double(this.posZ);
    414
    415                if (BlockRail.isRailBlockAt(this.worldObj, var45, var2 - 1, var47))
    416                {
    417                    --var2;
    418                }
    419
    420                double var4 = 0.4D;
    421                double var6 = 0.0078125D;
    422                int var8 = this.worldObj.getBlockId(var45, var2, var47);
    423
    424                if (canUseRail() && BlockRail.isRailBlock(var8))
    425                {
    426                    this.fallDistance = 0.0F;
    427                    Vec3 var9 = this.func_70489_a(this.posX, this.posY, this.posZ);
    428                    int var10 = ((BlockRail)Block.blocksList[var8]).getBasicRailMetadata(worldObj, this, var45, var2, var47);
    429                    this.posY = (double)var2;
    430                    boolean var11 = false;
    431                    boolean var12 = false;
    432
    433                    if (var8 == Block.railPowered.blockID)
    434                    {
    435                        var11 = (worldObj.getBlockMetadata(var45, var2, var47) & 8) != 0;
    436                        var12 = !var11;
    437                    }
    438
    439                    if (((BlockRail)Block.blocksList[var8]).isPowered())
    440                    {
    441                        var10 &= 7;
    442                    }
    443
    444                    if (var10 >= 2 && var10 <= 5)
    445                    {
    446                        this.posY = (double)(var2 + 1);
    447                    }
    448
    449                    adjustSlopeVelocities(var10);
    450
    451                    int[][] var13 = field_70500_g[var10];
    452                    double var14 = (double)(var13[1][0] - var13[0][0]);
    453                    double var16 = (double)(var13[1][2] - var13[0][2]);
    454                    double var18 = Math.sqrt(var14 * var14 + var16 * var16);
    455                    double var20 = this.motionX * var14 + this.motionZ * var16;
    456
    457                    if (var20 < 0.0D)
    458                    {
    459                        var14 = -var14;
    460                        var16 = -var16;
    461                    }
    462
    463                    double var22 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ);
    464                    this.motionX = var22 * var14 / var18;
    465                    this.motionZ = var22 * var16 / var18;
    466                    double var24;
    467                    double var26;
    468
    469                    if (this.riddenByEntity != null)
    470                    {
    471                        var24 = this.riddenByEntity.motionX * this.riddenByEntity.motionX + this.riddenByEntity.motionZ * this.riddenByEntity.motionZ;
    472                        var26 = this.motionX * this.motionX + this.motionZ * this.motionZ;
    473
    474                        if (var24 > 1.0E-4D && var26 < 0.01D)
    475                        {
    476                            this.motionX += this.riddenByEntity.motionX * 0.1D;
    477                            this.motionZ += this.riddenByEntity.motionZ * 0.1D;
    478                            var12 = false;
    479                        }
    480                    }
    481
    482                    if (var12 && shouldDoRailFunctions())
    483                    {
    484                        var24 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ);
    485
    486                        if (var24 < 0.03D)
    487                        {
    488                            this.motionX *= 0.0D;
    489                            this.motionY *= 0.0D;
    490                            this.motionZ *= 0.0D;
    491                        }
    492                        else
    493                        {
    494                            this.motionX *= 0.5D;
    495                            this.motionY *= 0.0D;
    496                            this.motionZ *= 0.5D;
    497                        }
    498                    }
    499
    500                    var24 = 0.0D;
    501                    var26 = (double)var45 + 0.5D + (double)var13[0][0] * 0.5D;
    502                    double var28 = (double)var47 + 0.5D + (double)var13[0][2] * 0.5D;
    503                    double var30 = (double)var45 + 0.5D + (double)var13[1][0] * 0.5D;
    504                    double var32 = (double)var47 + 0.5D + (double)var13[1][2] * 0.5D;
    505                    var14 = var30 - var26;
    506                    var16 = var32 - var28;
    507                    double var34;
    508                    double var36;
    509
    510                    if (var14 == 0.0D)
    511                    {
    512                        this.posX = (double)var45 + 0.5D;
    513                        var24 = this.posZ - (double)var47;
    514                    }
    515                    else if (var16 == 0.0D)
    516                    {
    517                        this.posZ = (double)var47 + 0.5D;
    518                        var24 = this.posX - (double)var45;
    519                    }
    520                    else
    521                    {
    522                        var34 = this.posX - var26;
    523                        var36 = this.posZ - var28;
    524                        var24 = (var34 * var14 + var36 * var16) * 2.0D;
    525                    }
    526
    527                    this.posX = var26 + var14 * var24;
    528                    this.posZ = var28 + var16 * var24;
    529                    this.setPosition(this.posX, this.posY + (double)this.yOffset, this.posZ);
    530
    531                    moveMinecartOnRail(var45, var2, var47);
    532
    533                    if (var13[0][1] != 0 && MathHelper.floor_double(this.posX) - var45 == var13[0][0] && MathHelper.floor_double(this.posZ) - var47 == var13[0][2])
    534                    {
    535                        this.setPosition(this.posX, this.posY + (double)var13[0][1], this.posZ);
    536                    }
    537                    else if (var13[1][1] != 0 && MathHelper.floor_double(this.posX) - var45 == var13[1][0] && MathHelper.floor_double(this.posZ) - var47 == var13[1][2])
    538                    {
    539                        this.setPosition(this.posX, this.posY + (double)var13[1][1], this.posZ);
    540                    }
    541
    542                    applyDragAndPushForces();
    543
    544                    Vec3 var54 = this.func_70489_a(this.posX, this.posY, this.posZ);
    545
    546                    if (var54 != null && var9 != null)
    547                    {
    548                        double var39 = (var9.yCoord - var54.yCoord) * 0.05D;
    549                        var22 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ);
    550
    551                        if (var22 > 0.0D)
    552                        {
    553                            this.motionX = this.motionX / var22 * (var22 + var39);
    554                            this.motionZ = this.motionZ / var22 * (var22 + var39);
    555                        }
    556
    557                        this.setPosition(this.posX, var54.yCoord, this.posZ);
    558                    }
    559
    560                    int var53 = MathHelper.floor_double(this.posX);
    561                    int var55 = MathHelper.floor_double(this.posZ);
    562
    563                    if (var53 != var45 || var55 != var47)
    564                    {
    565                        var22 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ);
    566                        this.motionX = var22 * (double)(var53 - var45);
    567                        this.motionZ = var22 * (double)(var55 - var47);
    568                    }
    569
    570                    double var41;
    571
    572                    updatePushForces();
    573
    574                    if(shouldDoRailFunctions())
    575                    {
    576                        ((BlockRail)Block.blocksList[var8]).onMinecartPass(worldObj, this, var45, var2, var47);
    577                    }
    578
    579                    if (var11 && shouldDoRailFunctions())
    580                    {
    581                        var41 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ);
    582
    583                        if (var41 > 0.01D)
    584                        {
    585                            double var43 = 0.06D;
    586                            this.motionX += this.motionX / var41 * var43;
    587                            this.motionZ += this.motionZ / var41 * var43;
    588                        }
    589                        else if (var10 == 1)
    590                        {
    591                            if (this.worldObj.isBlockNormalCube(var45 - 1, var2, var47))
    592                            {
    593                                this.motionX = 0.02D;
    594                            }
    595                            else if (this.worldObj.isBlockNormalCube(var45 + 1, var2, var47))
    596                            {
    597                                this.motionX = -0.02D;
    598                            }
    599                        }
    600                        else if (var10 == 0)
    601                        {
    602                            if (this.worldObj.isBlockNormalCube(var45, var2, var47 - 1))
    603                            {
    604                                this.motionZ = 0.02D;
    605                            }
    606                            else if (this.worldObj.isBlockNormalCube(var45, var2, var47 + 1))
    607                            {
    608                                this.motionZ = -0.02D;
    609                            }
    610                        }
    611                    }
    612                }
    613                else
    614                {
    615                    moveMinecartOffRail(var45, var2, var47);
    616                }
    617
    618                this.doBlockCollisions();
    619                this.rotationPitch = 0.0F;
    620                double var49 = this.prevPosX - this.posX;
    621                double var50 = this.prevPosZ - this.posZ;
    622
    623                if (var49 * var49 + var50 * var50 > 0.001D)
    624                {
    625                    this.rotationYaw = (float)(Math.atan2(var50, var49) * 180.0D / Math.PI);
    626
    627                    if (this.field_70499_f)
    628                    {
    629                        this.rotationYaw += 180.0F;
    630                    }
    631                }
    632
    633                double var51 = (double)MathHelper.wrapAngleTo180_float(this.rotationYaw - this.prevRotationYaw);
    634
    635                if (var51 < -170.0D || var51 >= 170.0D)
    636                {
    637                    this.rotationYaw += 180.0F;
    638                    this.field_70499_f = !this.field_70499_f;
    639                }
    640
    641                this.setRotation(this.rotationYaw, this.rotationPitch);
    642
    643                AxisAlignedBB box = null;
    644                if (getCollisionHandler() != null)
    645                {
    646                    box = getCollisionHandler().getMinecartCollisionBox(this);
    647                }
    648                else
    649                {
    650                    box = boundingBox.expand(0.2D, 0.0D, 0.2D);
    651                }
    652
    653                List var15 = this.worldObj.getEntitiesWithinAABBExcludingEntity(this, box);
    654
    655                if (var15 != null && !var15.isEmpty())
    656                {
    657                    for (int var52 = 0; var52 < var15.size(); ++var52)
    658                    {
    659                        Entity var17 = (Entity)var15.get(var52);
    660
    661                        if (var17 != this.riddenByEntity && var17.canBePushed() && var17 instanceof EntityMinecart)
    662                        {
    663                            var17.applyEntityCollision(this);
    664                        }
    665                    }
    666                }
    667
    668                if (this.riddenByEntity != null && this.riddenByEntity.isDead)
    669                {
    670                    if (this.riddenByEntity.ridingEntity == this)
    671                    {
    672                        this.riddenByEntity.ridingEntity = null;
    673                    }
    674
    675                    this.riddenByEntity = null;
    676                }
    677
    678                updateFuel();
    679                MinecraftForge.EVENT_BUS.post(new MinecartUpdateEvent(this, var45, var2, var47));
    680            }
    681        }
    682
    683        @SideOnly(Side.CLIENT)
    684        public Vec3 func_70495_a(double par1, double par3, double par5, double par7)
    685        {
    686            int var9 = MathHelper.floor_double(par1);
    687            int var10 = MathHelper.floor_double(par3);
    688            int var11 = MathHelper.floor_double(par5);
    689
    690            if (BlockRail.isRailBlockAt(this.worldObj, var9, var10 - 1, var11))
    691            {
    692                --var10;
    693            }
    694
    695            int var12 = this.worldObj.getBlockId(var9, var10, var11);
    696
    697            if (!BlockRail.isRailBlock(var12))
    698            {
    699                return null;
    700            }
    701            else
    702            {
    703                int var13 = ((BlockRail)Block.blocksList[var12]).getBasicRailMetadata(worldObj, this, var9, var10, var11);
    704
    705                par3 = (double)var10;
    706
    707                if (var13 >= 2 && var13 <= 5)
    708                {
    709                    par3 = (double)(var10 + 1);
    710                }
    711
    712                int[][] var14 = field_70500_g[var13];
    713                double var15 = (double)(var14[1][0] - var14[0][0]);
    714                double var17 = (double)(var14[1][2] - var14[0][2]);
    715                double var19 = Math.sqrt(var15 * var15 + var17 * var17);
    716                var15 /= var19;
    717                var17 /= var19;
    718                par1 += var15 * par7;
    719                par5 += var17 * par7;
    720
    721                if (var14[0][1] != 0 && MathHelper.floor_double(par1) - var9 == var14[0][0] && MathHelper.floor_double(par5) - var11 == var14[0][2])
    722                {
    723                    par3 += (double)var14[0][1];
    724                }
    725                else if (var14[1][1] != 0 && MathHelper.floor_double(par1) - var9 == var14[1][0] && MathHelper.floor_double(par5) - var11 == var14[1][2])
    726                {
    727                    par3 += (double)var14[1][1];
    728                }
    729
    730                return this.func_70489_a(par1, par3, par5);
    731            }
    732        }
    733
    734        public Vec3 func_70489_a(double par1, double par3, double par5)
    735        {
    736            int var7 = MathHelper.floor_double(par1);
    737            int var8 = MathHelper.floor_double(par3);
    738            int var9 = MathHelper.floor_double(par5);
    739
    740            if (BlockRail.isRailBlockAt(this.worldObj, var7, var8 - 1, var9))
    741            {
    742                --var8;
    743            }
    744
    745            int var10 = this.worldObj.getBlockId(var7, var8, var9);
    746
    747            if (BlockRail.isRailBlock(var10))
    748            {
    749                int var11 = ((BlockRail)Block.blocksList[var10]).getBasicRailMetadata(worldObj, this, var7, var8, var9);
    750                par3 = (double)var8;
    751
    752                if (var11 >= 2 && var11 <= 5)
    753                {
    754                    par3 = (double)(var8 + 1);
    755                }
    756
    757                int[][] var12 = field_70500_g[var11];
    758                double var13 = 0.0D;
    759                double var15 = (double)var7 + 0.5D + (double)var12[0][0] * 0.5D;
    760                double var17 = (double)var8 + 0.5D + (double)var12[0][1] * 0.5D;
    761                double var19 = (double)var9 + 0.5D + (double)var12[0][2] * 0.5D;
    762                double var21 = (double)var7 + 0.5D + (double)var12[1][0] * 0.5D;
    763                double var23 = (double)var8 + 0.5D + (double)var12[1][1] * 0.5D;
    764                double var25 = (double)var9 + 0.5D + (double)var12[1][2] * 0.5D;
    765                double var27 = var21 - var15;
    766                double var29 = (var23 - var17) * 2.0D;
    767                double var31 = var25 - var19;
    768
    769                if (var27 == 0.0D)
    770                {
    771                    par1 = (double)var7 + 0.5D;
    772                    var13 = par5 - (double)var9;
    773                }
    774                else if (var31 == 0.0D)
    775                {
    776                    par5 = (double)var9 + 0.5D;
    777                    var13 = par1 - (double)var7;
    778                }
    779                else
    780                {
    781                    double var33 = par1 - var15;
    782                    double var35 = par5 - var19;
    783                    var13 = (var33 * var27 + var35 * var31) * 2.0D;
    784                }
    785
    786                par1 = var15 + var27 * var13;
    787                par3 = var17 + var29 * var13;
    788                par5 = var19 + var31 * var13;
    789
    790                if (var29 < 0.0D)
    791                {
    792                    ++par3;
    793                }
    794
    795                if (var29 > 0.0D)
    796                {
    797                    par3 += 0.5D;
    798                }
    799
    800                return this.worldObj.getWorldVec3Pool().getVecFromPool(par1, par3, par5);
    801            }
    802            else
    803            {
    804                return null;
    805            }
    806        }
    807
    808        /**
    809         * (abstract) Protected helper method to write subclass entity data to NBT.
    810         */
    811        protected void writeEntityToNBT(NBTTagCompound par1NBTTagCompound)
    812        {
    813            par1NBTTagCompound.setInteger("Type", this.minecartType);
    814
    815            if (isPoweredCart())
    816            {
    817                par1NBTTagCompound.setDouble("PushX", this.pushX);
    818                par1NBTTagCompound.setDouble("PushZ", this.pushZ);
    819                par1NBTTagCompound.setInteger("Fuel", this.fuel);
    820            }
    821
    822            if (getSizeInventory() > 0)
    823            {
    824                NBTTagList var2 = new NBTTagList();
    825
    826                for (int var3 = 0; var3 < this.cargoItems.length; ++var3)
    827                {
    828                    if (this.cargoItems[var3] != null)
    829                    {
    830                        NBTTagCompound var4 = new NBTTagCompound();
    831                        var4.setByte("Slot", (byte)var3);
    832                        this.cargoItems[var3].writeToNBT(var4);
    833                        var2.appendTag(var4);
    834                    }
    835                }
    836
    837                par1NBTTagCompound.setTag("Items", var2);
    838            }
    839        }
    840
    841        /**
    842         * (abstract) Protected helper method to read subclass entity data from NBT.
    843         */
    844        protected void readEntityFromNBT(NBTTagCompound par1NBTTagCompound)
    845        {
    846            this.minecartType = par1NBTTagCompound.getInteger("Type");
    847
    848            if (isPoweredCart())
    849            {
    850                this.pushX = par1NBTTagCompound.getDouble("PushX");
    851                this.pushZ = par1NBTTagCompound.getDouble("PushZ");
    852                try
    853                {
    854                    this.fuel = par1NBTTagCompound.getInteger("Fuel");
    855                }
    856                catch (ClassCastException e)
    857                {
    858                    this.fuel = par1NBTTagCompound.getShort("Fuel");
    859                }
    860            }
    861
    862            if (getSizeInventory() > 0)
    863            {
    864                NBTTagList var2 = par1NBTTagCompound.getTagList("Items");
    865                this.cargoItems = new ItemStack[this.getSizeInventory()];
    866
    867                for (int var3 = 0; var3 < var2.tagCount(); ++var3)
    868                {
    869                    NBTTagCompound var4 = (NBTTagCompound)var2.tagAt(var3);
    870                    int var5 = var4.getByte("Slot") & 255;
    871
    872                    if (var5 >= 0 && var5 < this.cargoItems.length)
    873                    {
    874                        this.cargoItems[var5] = ItemStack.loadItemStackFromNBT(var4);
    875                    }
    876                }
    877            }
    878        }
    879
    880        @SideOnly(Side.CLIENT)
    881        public float getShadowSize()
    882        {
    883            return 0.0F;
    884        }
    885
    886        /**
    887         * Applies a velocity to each of the entities pushing them away from each other. Args: entity
    888         */
    889        public void applyEntityCollision(Entity par1Entity)
    890        {
    891            MinecraftForge.EVENT_BUS.post(new MinecartCollisionEvent(this, par1Entity));
    892            if (getCollisionHandler() != null)
    893            {
    894                getCollisionHandler().onEntityCollision(this, par1Entity);
    895                return;
    896            }
    897            if (!this.worldObj.isRemote)
    898            {
    899                if (par1Entity != this.riddenByEntity)
    900                {
    901                    if (par1Entity instanceof EntityLiving && !(par1Entity instanceof EntityPlayer) && !(par1Entity instanceof EntityIronGolem) && canBeRidden() && this.motionX * this.motionX + this.motionZ * this.motionZ > 0.01D && this.riddenByEntity == null && par1Entity.ridingEntity == null)
    902                    {
    903                        par1Entity.mountEntity(this);
    904                    }
    905
    906                    double var2 = par1Entity.posX - this.posX;
    907                    double var4 = par1Entity.posZ - this.posZ;
    908                    double var6 = var2 * var2 + var4 * var4;
    909
    910                    if (var6 >= 9.999999747378752E-5D)
    911                    {
    912                        var6 = (double)MathHelper.sqrt_double(var6);
    913                        var2 /= var6;
    914                        var4 /= var6;
    915                        double var8 = 1.0D / var6;
    916
    917                        if (var8 > 1.0D)
    918                        {
    919                            var8 = 1.0D;
    920                        }
    921
    922                        var2 *= var8;
    923                        var4 *= var8;
    924                        var2 *= 0.10000000149011612D;
    925                        var4 *= 0.10000000149011612D;
    926                        var2 *= (double)(1.0F - this.entityCollisionReduction);
    927                        var4 *= (double)(1.0F - this.entityCollisionReduction);
    928                        var2 *= 0.5D;
    929                        var4 *= 0.5D;
    930
    931                        if (par1Entity instanceof EntityMinecart)
    932                        {
    933                            double var10 = par1Entity.posX - this.posX;
    934                            double var12 = par1Entity.posZ - this.posZ;
    935                            Vec3 var14 = this.worldObj.getWorldVec3Pool().getVecFromPool(var10, 0.0D, var12).normalize();
    936                            Vec3 var15 = this.worldObj.getWorldVec3Pool().getVecFromPool((double)MathHelper.cos(this.rotationYaw * (float)Math.PI / 180.0F), 0.0D, (double)MathHelper.sin(this.rotationYaw * (float)Math.PI / 180.0F)).normalize();
    937                            double var16 = Math.abs(var14.dotProduct(var15));
    938
    939                            if (var16 < 0.800000011920929D)
    940                            {
    941                                return;
    942                            }
    943
    944                            double var18 = par1Entity.motionX + this.motionX;
    945                            double var20 = par1Entity.motionZ + this.motionZ;
    946
    947                            if (((EntityMinecart)par1Entity).isPoweredCart() && !isPoweredCart())
    948                            {
    949                                this.motionX *= 0.20000000298023224D;
    950                                this.motionZ *= 0.20000000298023224D;
    951                                this.addVelocity(par1Entity.motionX - var2, 0.0D, par1Entity.motionZ - var4);
    952                                par1Entity.motionX *= 0.949999988079071D;
    953                                par1Entity.motionZ *= 0.949999988079071D;
    954                            }
    955                            else if (!((EntityMinecart)par1Entity).isPoweredCart() && isPoweredCart())
    956                            {
    957                                par1Entity.motionX *= 0.20000000298023224D;
    958                                par1Entity.motionZ *= 0.20000000298023224D;
    959                                par1Entity.addVelocity(this.motionX + var2, 0.0D, this.motionZ + var4);
    960                                this.motionX *= 0.949999988079071D;
    961                                this.motionZ *= 0.949999988079071D;
    962                            }
    963                            else
    964                            {
    965                                var18 /= 2.0D;
    966                                var20 /= 2.0D;
    967                                this.motionX *= 0.20000000298023224D;
    968                                this.motionZ *= 0.20000000298023224D;
    969                                this.addVelocity(var18 - var2, 0.0D, var20 - var4);
    970                                par1Entity.motionX *= 0.20000000298023224D;
    971                                par1Entity.motionZ *= 0.20000000298023224D;
    972                                par1Entity.addVelocity(var18 + var2, 0.0D, var20 + var4);
    973                            }
    974                        }
    975                        else
    976                        {
    977                            this.addVelocity(-var2, 0.0D, -var4);
    978                            par1Entity.addVelocity(var2 / 4.0D, 0.0D, var4 / 4.0D);
    979                        }
    980                    }
    981                }
    982            }
    983        }
    984
    985        /**
    986         * Returns the number of slots in the inventory.
    987         */
    988        public int getSizeInventory()
    989        {
    990            return (minecartType == 1 && getClass() == EntityMinecart.class ? 27 : 0);
    991        }
    992
    993        /**
    994         * Returns the stack in slot i
    995         */
    996        public ItemStack getStackInSlot(int par1)
    997        {
    998            return this.cargoItems[par1];
    999        }
    1000
    1001        /**
    1002         * Removes from an inventory slot (first arg) up to a specified number (second arg) of items and returns them in a
    1003         * new stack.
    1004         */
    1005        public ItemStack decrStackSize(int par1, int par2)
    1006        {
    1007            if (this.cargoItems[par1] != null)
    1008            {
    1009                ItemStack var3;
    1010
    1011                if (this.cargoItems[par1].stackSize <= par2)
    1012                {
    1013                    var3 = this.cargoItems[par1];
    1014                    this.cargoItems[par1] = null;
    1015                    return var3;
    1016                }
    1017                else
    1018                {
    1019                    var3 = this.cargoItems[par1].splitStack(par2);
    1020
    1021                    if (this.cargoItems[par1].stackSize == 0)
    1022                    {
    1023                        this.cargoItems[par1] = null;
    1024                    }
    1025
    1026                    return var3;
    1027                }
    1028            }
    1029            else
    1030            {
    1031                return null;
    1032            }
    1033        }
    1034
    1035        /**
    1036         * When some containers are closed they call this on each slot, then drop whatever it returns as an EntityItem -
    1037         * like when you close a workbench GUI.
    1038         */
    1039        public ItemStack getStackInSlotOnClosing(int par1)
    1040        {
    1041            if (this.cargoItems[par1] != null)
    1042            {
    1043                ItemStack var2 = this.cargoItems[par1];
    1044                this.cargoItems[par1] = null;
    1045                return var2;
    1046            }
    1047            else
    1048            {
    1049                return null;
    1050            }
    1051        }
    1052
    1053        /**
    1054         * Sets the given item stack to the specified slot in the inventory (can be crafting or armor sections).
    1055         */
    1056        public void setInventorySlotContents(int par1, ItemStack par2ItemStack)
    1057        {
    1058            this.cargoItems[par1] = par2ItemStack;
    1059
    1060            if (par2ItemStack != null && par2ItemStack.stackSize > this.getInventoryStackLimit())
    1061            {
    1062                par2ItemStack.stackSize = this.getInventoryStackLimit();
    1063            }
    1064        }
    1065
    1066        /**
    1067         * Returns the name of the inventory.
    1068         */
    1069        public String getInvName()
    1070        {
    1071            return "container.minecart";
    1072        }
    1073
    1074        /**
    1075         * Returns the maximum stack size for a inventory slot. Seems to always be 64, possibly will be extended. *Isn't
    1076         * this more of a set than a get?*
    1077         */
    1078        public int getInventoryStackLimit()
    1079        {
    1080            return 64;
    1081        }
    1082
    1083        /**
    1084         * Called when an the contents of an Inventory change, usually
    1085         */
    1086        public void onInventoryChanged() {}
    1087
    1088        /**
    1089         * Called when a player interacts with a mob. e.g. gets milk from a cow, gets into the saddle on a pig.
    1090         */
    1091        public boolean interact(EntityPlayer par1EntityPlayer)
    1092        {
    1093            if (MinecraftForge.EVENT_BUS.post(new MinecartInteractEvent(this, par1EntityPlayer)))
    1094            {
    1095                return true;
    1096            }
    1097
    1098            if (canBeRidden())
    1099            {
    1100                if (this.riddenByEntity != null && this.riddenByEntity instanceof EntityPlayer && this.riddenByEntity != par1EntityPlayer)
    1101                {
    1102                    return true;
    1103                }
    1104
    1105                if (!this.worldObj.isRemote)
    1106                {
    1107                    par1EntityPlayer.mountEntity(this);
    1108                }
    1109            }
    1110            else if (getSizeInventory() > 0)
    1111            {
    1112                if (!this.worldObj.isRemote)
    1113                {
    1114                    par1EntityPlayer.displayGUIChest(this);
    1115                }
    1116            }
    1117            else if (this.minecartType == 2 && getClass() == EntityMinecart.class)
    1118            {
    1119                ItemStack var2 = par1EntityPlayer.inventory.getCurrentItem();
    1120
    1121                if (var2 != null && var2.itemID == Item.coal.shiftedIndex)
    1122                {
    1123                    if (--var2.stackSize == 0)
    1124                    {
    1125                        par1EntityPlayer.inventory.setInventorySlotContents(par1EntityPlayer.inventory.currentItem, (ItemStack)null);
    1126                    }
    1127
    1128                    this.fuel += 3600;
    1129                }
    1130
    1131                this.pushX = this.posX - par1EntityPlayer.posX;
    1132                this.pushZ = this.posZ - par1EntityPlayer.posZ;
    1133            }
    1134
    1135            return true;
    1136        }
    1137
    1138        @SideOnly(Side.CLIENT)
    1139
    1140        /**
    1141         * Sets the position and rotation. Only difference from the other one is no bounding on the rotation. Args: posX,
    1142         * posY, posZ, yaw, pitch
    1143         */
    1144        public void setPositionAndRotation2(double par1, double par3, double par5, float par7, float par8, int par9)
    1145        {
    1146            this.minecartX = par1;
    1147            this.minecartY = par3;
    1148            this.minecartZ = par5;
    1149            this.minecartYaw = (double)par7;
    1150            this.minecartPitch = (double)par8;
    1151            this.turnProgress = par9 + 2;
    1152            this.motionX = this.velocityX;
    1153            this.motionY = this.velocityY;
    1154            this.motionZ = this.velocityZ;
    1155        }
    1156
    1157        @SideOnly(Side.CLIENT)
    1158
    1159        /**
    1160         * Sets the velocity to the args. Args: x, y, z
    1161         */
    1162        public void setVelocity(double par1, double par3, double par5)
    1163        {
    1164            this.velocityX = this.motionX = par1;
    1165            this.velocityY = this.motionY = par3;
    1166            this.velocityZ = this.motionZ = par5;
    1167        }
    1168
    1169        /**
    1170         * Do not make give this method the name canInteractWith because it clashes with Container
    1171         */
    1172        public boolean isUseableByPlayer(EntityPlayer par1EntityPlayer)
    1173        {
    1174            return this.isDead ? false : par1EntityPlayer.getDistanceSqToEntity(this) <= 64.0D;
    1175        }
    1176
    1177        /**
    1178         * Is this minecart powered (Fuel > 0)
    1179         */
    1180        public boolean isMinecartPowered()
    1181        {
    1182            return (this.dataWatcher.getWatchableObjectByte(16) & 1) != 0;
    1183        }
    1184
    1185        /**
    1186         * Set if this minecart is powered (Fuel > 0)
    1187         */
    1188        protected void setMinecartPowered(boolean par1)
    1189        {
    1190            if (par1)
    1191            {
    1192                this.dataWatcher.updateObject(16, Byte.valueOf((byte)(this.dataWatcher.getWatchableObjectByte(16) | 1)));
    1193            }
    1194            else
    1195            {
    1196                this.dataWatcher.updateObject(16, Byte.valueOf((byte)(this.dataWatcher.getWatchableObjectByte(16) & -2)));
    1197            }
    1198        }
    1199
    1200        public void openChest() {}
    1201
    1202        public void closeChest() {}
    1203
    1204        /**
    1205         * Sets the current amount of damage the minecart has taken. Decreases over time. The cart breaks when this is over
    1206         * 40.
    1207         */
    1208        public void setDamage(int par1)
    1209        {
    1210            this.dataWatcher.updateObject(19, Integer.valueOf(par1));
    1211        }
    1212
    1213        /**
    1214         * Gets the current amount of damage the minecart has taken. Decreases over time. The cart breaks when this is over
    1215         * 40.
    1216         */
    1217        public int getDamage()
    1218        {
    1219            return this.dataWatcher.getWatchableObjectInt(19);
    1220        }
    1221
    1222        public void func_70497_h(int par1)
    1223        {
    1224            this.dataWatcher.updateObject(17, Integer.valueOf(par1));
    1225        }
    1226
    1227        public int func_70496_j()
    1228        {
    1229            return this.dataWatcher.getWatchableObjectInt(17);
    1230        }
    1231
    1232        public void func_70494_i(int par1)
    1233        {
    1234            this.dataWatcher.updateObject(18, Integer.valueOf(par1));
    1235        }
    1236
    1237        public int func_70493_k()
    1238        {
    1239            return this.dataWatcher.getWatchableObjectInt(18);
    1240        }
    1241
    1242        /**
    1243         * Drops the cart as a item. The exact item dropped is defined by getItemDropped().
    1244         */
    1245        public void dropCartAsItem()
    1246        {
    1247            for(ItemStack item : getItemsDropped())
    1248            {
    1249                entityDropItem(item, 0);
    1250            }
    1251        }
    1252
    1253        /**
    1254         * Override this to define which items your cart drops when broken.
    1255         * This does not include items contained in the inventory,
    1256         * that is handled elsewhere.
    1257         * @return A list of items dropped.
    1258         */
    1259        public List<ItemStack> getItemsDropped()
    1260        {
    1261            List<ItemStack> items = new ArrayList<ItemStack>();
    1262            items.add(new ItemStack(Item.minecartEmpty));
    1263
    1264            switch(minecartType)
    1265            {
    1266                case 1:
    1267                    items.add(new ItemStack(Block.chest));
    1268                    break;
    1269                case 2:
    1270                    items.add(new ItemStack(Block.stoneOvenIdle));
    1271                    break;
    1272            }
    1273            return items;
    1274        }
    1275
    1276        /**
    1277         * This function returns an ItemStack that represents this cart.
    1278         * This should be an ItemStack that can be used by the player to place the cart.
    1279         * This is the item that was registered with the cart via the registerMinecart function,
    1280         * but is not necessary the item the cart drops when destroyed.
    1281         * @return An ItemStack that can be used to place the cart.
    1282         */
    1283        public ItemStack getCartItem()
    1284        {
    1285            return MinecartRegistry.getItemForCart(this);
    1286        }
    1287
    1288        /**
    1289         * Returns true if this cart is self propelled.
    1290         * @return True if powered.
    1291         */
    1292        public boolean isPoweredCart()
    1293        {
    1294            return minecartType == 2 && getClass() == EntityMinecart.class;
    1295        }
    1296
    1297        /**
    1298         * Returns true if this cart is a storage cart
    1299         * Some carts may have inventories but not be storage carts
    1300         * and some carts without inventories may be storage carts.
    1301         * @return True if this cart should be classified as a storage cart.
    1302         */
    1303        public boolean isStorageCart()
    1304        {
    1305            return minecartType == 1 && getClass() == EntityMinecart.class;
    1306        }
    1307
    1308        /**
    1309         * Returns true if this cart can be ridden by an Entity.
    1310         * @return True if this cart can be ridden.
    1311         */
    1312        public boolean canBeRidden()
    1313        {
    1314            if(minecartType == 0 && getClass() == EntityMinecart.class)
    1315            {
    1316                return true;
    1317            }
    1318            return false;
    1319        }
    1320
    1321        /**
    1322         * Returns true if this cart can currently use rails.
    1323         * This function is mainly used to gracefully detach a minecart from a rail.
    1324         * @return True if the minecart can use rails.
    1325         */
    1326        public boolean canUseRail()
    1327        {
    1328            return canUseRail;
    1329        }
    1330
    1331        /**
    1332         * Set whether the minecart can use rails.
    1333         * This function is mainly used to gracefully detach a minecart from a rail.
    1334         * @param use Whether the minecart can currently use rails.
    1335         */
    1336        public void setCanUseRail(boolean use)
    1337        {
    1338            canUseRail = use;
    1339        }
    1340
    1341        /**
    1342         * Return false if this cart should not call IRail.onMinecartPass() and should ignore Powered Rails.
    1343         * @return True if this cart should call IRail.onMinecartPass().
    1344         */
    1345        public boolean shouldDoRailFunctions()
    1346        {
    1347            return true;
    1348        }
    1349
    1350        /**
    1351         * Simply returns the minecartType variable.
    1352         * @return minecartType
    1353         */
    1354        public int getMinecartType()
    1355        {
    1356            return minecartType;
    1357        }
    1358
    1359        /**
    1360         * Gets the current global Minecart Collision handler if none
    1361         * is registered, returns null
    1362         * @return The collision handler or null
    1363         */
    1364        public static IMinecartCollisionHandler getCollisionHandler()
    1365        {
    1366            return collisionHandler;
    1367        }
    1368
    1369        /**
    1370         * Sets the global Minecart Collision handler, overwrites any
    1371         * that is currently set.
    1372         * @param handler The new handler
    1373         */
    1374        public static void setCollisionHandler(IMinecartCollisionHandler handler)
    1375        {
    1376            collisionHandler = handler;
    1377        }
    1378
    1379        /**
    1380         * Carts should return their drag factor here
    1381         * @return The drag rate.
    1382         */
    1383        protected double getDrag()
    1384        {
    1385            return riddenByEntity != null ? defaultDragRidden : defaultDragEmpty;
    1386        }
    1387
    1388        /**
    1389         * Moved to allow overrides.
    1390         * This code applies drag and updates push forces.
    1391         */
    1392        protected void applyDragAndPushForces()
    1393        {
    1394            if(isPoweredCart())
    1395            {
    1396                double d27 = MathHelper.sqrt_double(pushX * pushX + pushZ * pushZ);
    1397                if(d27 > 0.01D)
    1398                {
    1399                    pushX /= d27;
    1400                    pushZ /= d27;
    1401                    double d29 = 0.04;
    1402                    motionX *= 0.8D;
    1403                    motionY *= 0.0D;
    1404                    motionZ *= 0.8D;
    1405                    motionX += pushX * d29;
    1406                    motionZ += pushZ * d29;
    1407                }
    1408                else
    1409                {
    1410                    motionX *= 0.9D;
    1411                    motionY *= 0.0D;
    1412                    motionZ *= 0.9D;
    1413                }
    1414            }
    1415            motionX *= getDrag();
    1416            motionY *= 0.0D;
    1417            motionZ *= getDrag();
    1418        }
    1419
    1420        /**
    1421         * Moved to allow overrides.
    1422         * This code updates push forces.
    1423         */
    1424        protected void updatePushForces()
    1425        {
    1426            if(isPoweredCart())
    1427            {
    1428                double push = MathHelper.sqrt_double(pushX * pushX + pushZ * pushZ);
    1429                if(push > 0.01D && motionX * motionX + motionZ * motionZ > 0.001D)
    1430                {
    1431                    pushX /= push;
    1432                    pushZ /= push;
    1433                    if(pushX * motionX + pushZ * motionZ < 0.0D)
    1434                    {
    1435                        pushX = 0.0D;
    1436                        pushZ = 0.0D;
    1437                    }
    1438                    else
    1439                    {
    1440                        pushX = motionX;
    1441                        pushZ = motionZ;
    1442                    }
    1443                }
    1444            }
    1445        }
    1446
    1447        /**
    1448         * Moved to allow overrides.
    1449         * This code handles minecart movement and speed capping when on a rail.
    1450         */
    1451        protected void moveMinecartOnRail(int i, int j, int k)
    1452        {
    1453            int id = worldObj.getBlockId(i, j, k);
    1454            if (!BlockRail.isRailBlock(id))
    1455            {
    1456                    return;
    1457            }
    1458            float railMaxSpeed = ((BlockRail)Block.blocksList[id]).getRailMaxSpeed(worldObj, this, i, j, k);
    1459
    1460            double maxSpeed = Math.min(railMaxSpeed, getMaxSpeedRail());
    1461            double mX = motionX;
    1462            double mZ = motionZ;
    1463            if(riddenByEntity != null)
    1464            {
    1465                mX *= 0.75D;
    1466                mZ *= 0.75D;
    1467            }
    1468            if(mX < -maxSpeed) mX = -maxSpeed;
    1469            if(mX >  maxSpeed) mX =  maxSpeed;
    1470            if(mZ < -maxSpeed) mZ = -maxSpeed;
    1471            if(mZ >  maxSpeed) mZ =  maxSpeed;
    1472            moveEntity(mX, 0.0D, mZ);
    1473        }
    1474
    1475        /**
    1476         * Moved to allow overrides.
    1477         * This code handles minecart movement and speed capping when not on a rail.
    1478         */
    1479        protected void moveMinecartOffRail(int i, int j, int k)
    1480        {
    1481            double d2 = getMaxSpeedGround();
    1482            if(!onGround)
    1483            {
    1484                d2 = getMaxSpeedAirLateral();
    1485            }
    1486            if(motionX < -d2) motionX = -d2;
    1487            if(motionX >  d2) motionX =  d2;
    1488            if(motionZ < -d2) motionZ = -d2;
    1489            if(motionZ >  d2) motionZ =  d2;
    1490            double moveY = motionY;
    1491            if(getMaxSpeedAirVertical() > 0 && motionY > getMaxSpeedAirVertical())
    1492            {
    1493                moveY = getMaxSpeedAirVertical();
    1494                if(Math.abs(motionX) < 0.3f && Math.abs(motionZ) < 0.3f)
    1495                {
    1496                    moveY = 0.15f;
    1497                    motionY = moveY;
    1498                }
    1499            }
    1500            if(onGround)
    1501            {
    1502                motionX *= 0.5D;
    1503                motionY *= 0.5D;
    1504                motionZ *= 0.5D;
    1505            }
    1506            moveEntity(motionX, moveY, motionZ);
    1507            if(!onGround)
    1508            {
    1509                motionX *= getDragAir();
    1510                motionY *= getDragAir();
    1511                motionZ *= getDragAir();
    1512            }
    1513        }
    1514
    1515        /**
    1516         * Moved to allow overrides.
    1517         * This code applies fuel consumption.
    1518         */
    1519        protected void updateFuel()
    1520        {
    1521            if (fuel > 0) fuel--;
    1522            if (fuel <= 0) pushX = pushZ = 0.0D;
    1523            setMinecartPowered(fuel > 0);
    1524        }
    1525
    1526        /**
    1527         * Moved to allow overrides, This code handle slopes affecting velocity.
    1528         * @param metadata The blocks position metadata
    1529         */
    1530        protected void adjustSlopeVelocities(int metadata)
    1531        {
    1532            double acceleration = 0.0078125D;
    1533            if (metadata == 2)
    1534            {
    1535                motionX -= acceleration;
    1536            }
    1537            else if (metadata == 3)
    1538            {
    1539                motionX += acceleration;
    1540            }
    1541            else if (metadata == 4)
    1542            {
    1543                motionZ += acceleration;
    1544            }
    1545            else if (metadata == 5)
    1546            {
    1547                motionZ -= acceleration;
    1548            }
    1549        }
    1550
    1551        /**
    1552         * Getters/setters for physics variables
    1553         */
    1554
    1555        /**
    1556         * Returns the carts max speed.
    1557         * Carts going faster than 1.1 cause issues with chunk loading.
    1558         * Carts cant traverse slopes or corners at greater than 0.5 - 0.6.
    1559         * This value is compared with the rails max speed to determine
    1560         * the carts current max speed. A normal rails max speed is 0.4.
    1561         * @return Carts max speed.
    1562         */
    1563        public float getMaxSpeedRail()
    1564        {
    1565            return maxSpeedRail;
    1566        }
    1567
    1568        public void setMaxSpeedRail(float value)
    1569        {
    1570            maxSpeedRail = value;
    1571        }
    1572
    1573        public float getMaxSpeedGround()
    1574        {
    1575            return maxSpeedGround;
    1576        }
    1577
    1578        public void setMaxSpeedGround(float value)
    1579        {
    1580            maxSpeedGround = value;
    1581        }
    1582
    1583        public float getMaxSpeedAirLateral()
    1584        {
    1585            return maxSpeedAirLateral;
    1586        }
    1587
    1588        public void setMaxSpeedAirLateral(float value)
    1589        {
    1590            maxSpeedAirLateral = value;
    1591        }
    1592
    1593        public float getMaxSpeedAirVertical()
    1594        {
    1595            return maxSpeedAirVertical;
    1596        }
    1597
    1598        public void setMaxSpeedAirVertical(float value)
    1599        {
    1600            maxSpeedAirVertical = value;
    1601        }
    1602
    1603        public double getDragAir()
    1604        {
    1605            return dragAir;
    1606        }
    1607
    1608        public void setDragAir(double value)
    1609        {
    1610            dragAir = value;
    1611        }
    1612    }