    001    package net.minecraft.src;
    002
    003    import cpw.mods.fml.common.Side;
    004    import cpw.mods.fml.common.asm.SideOnly;
    005
    006    import java.util.ArrayList;
    007    import java.util.List;
    008    import net.minecraftforge.common.IMinecartCollisionHandler;
    009    import net.minecraftforge.common.MinecartRegistry;
    010    import net.minecraftforge.common.MinecraftForge;
    011    import net.minecraftforge.event.entity.minecart.MinecartCollisionEvent;
    012    import net.minecraftforge.event.entity.minecart.MinecartInteractEvent;
    013    import net.minecraftforge.event.entity.minecart.MinecartUpdateEvent;
    014
    015    public class EntityMinecart extends Entity implements IInventory
    016    {
    017        /** Array of item stacks stored in minecart (for storage minecarts). */
    018        protected ItemStack[] cargoItems;
    019        protected int fuel;
    020        protected boolean field_70499_f;
    021
    022        /** The type of minecart, 2 for powered, 1 for storage. */
    023        public int minecartType;
    024        public double pushX;
    025        public double pushZ;
    026        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}}};
    027
    028        /** appears to be the progress of the turn */
    029        protected int turnProgress;
    030        protected double minecartX;
    031        protected double minecartY;
    032        protected double minecartZ;
    033        protected double minecartYaw;
    034        protected double minecartPitch;
    035        @SideOnly(Side.CLIENT)
    036        protected double velocityX;
    037        @SideOnly(Side.CLIENT)
    038        protected double velocityY;
    039        @SideOnly(Side.CLIENT)
    040        protected double velocityZ;
    041
    042        /* Forge: Minecart Compatibility Layer Integration. */
    043        public static float defaultMaxSpeedRail = 0.4f;
    044        public static float defaultMaxSpeedGround = 0.4f;
    045        public static float defaultMaxSpeedAirLateral = 0.4f;
    046        public static float defaultMaxSpeedAirVertical = -1f;
    047        public static double defaultDragRidden = 0.996999979019165D;
    048        public static double defaultDragEmpty = 0.9599999785423279D;
    049        public static double defaultDragAir = 0.94999998807907104D;
    050        protected boolean canUseRail = true;
    051        protected boolean canBePushed = true;
    052        private static IMinecartCollisionHandler collisionHandler = null;
    053
    054        /* Instance versions of the above physics properties */
    055        protected float maxSpeedRail;
    056        protected float maxSpeedGround;
    057        protected float maxSpeedAirLateral;
    058        protected float maxSpeedAirVertical;
    059        protected double dragAir;
    060
    061        public EntityMinecart(World par1World)
    062        {
    063            super(par1World);
    064            this.cargoItems = new ItemStack[36];
    065            this.fuel = 0;
    066            this.field_70499_f = false;
    067            this.preventEntitySpawning = true;
    068            this.setSize(0.98F, 0.7F);
    069            this.yOffset = this.height / 2.0F;
    070
    071            maxSpeedRail = defaultMaxSpeedRail;
    072            maxSpeedGround = defaultMaxSpeedGround;
    073            maxSpeedAirLateral = defaultMaxSpeedAirLateral;
    074            maxSpeedAirVertical = defaultMaxSpeedAirVertical;
    075            dragAir = defaultDragAir;
    076        }
    077
    078        public EntityMinecart(World world, int type)
    079        {
    080            this(world);
    081            minecartType = type;
    082        }
    083
    084        /**
    085         * returns if this entity triggers Block.onEntityWalking on the blocks they walk on. used for spiders and wolves to
    086         * prevent them from trampling crops
    087         */
    088        protected boolean canTriggerWalking()
    089        {
    090            return false;
    091        }
    092
    093        protected void entityInit()
    094        {
    095            this.dataWatcher.addObject(16, new Byte((byte)0));
    096            this.dataWatcher.addObject(17, new Integer(0));
    097            this.dataWatcher.addObject(18, new Integer(1));
    098            this.dataWatcher.addObject(19, new Integer(0));
    099        }
    100
    101        /**
    102         * Returns a boundingBox used to collide the entity with other entities and blocks. This enables the entity to be
    103         * pushable on contact, like boats or minecarts.
    104         */
    105        public AxisAlignedBB getCollisionBox(Entity par1Entity)
    106        {
    107            if (getCollisionHandler() != null)
    108            {
    109                return getCollisionHandler().getCollisionBox(this, par1Entity);
    110            }
    111            return par1Entity.boundingBox;
    112        }
    113
    114        /**
    115         * returns the bounding box for this entity
    116         */
    117        public AxisAlignedBB getBoundingBox()
    118        {
    119            if (getCollisionHandler() != null)
    120            {
    121                return getCollisionHandler().getBoundingBox(this);
    122            }
    123            return null;
    124        }
    125
    126        /**
    127         * Returns true if this entity should push and be pushed by other entities when colliding.
    128         */
    129        public boolean canBePushed()
    130        {
    131            return canBePushed;
    132        }
    133
    134        public EntityMinecart(World par1World, double par2, double par4, double par6, int par8)
    135        {
    136            this(par1World);
    137            this.setPosition(par2, par4 + (double)this.yOffset, par6);
    138            this.motionX = 0.0D;
    139            this.motionY = 0.0D;
    140            this.motionZ = 0.0D;
    141            this.prevPosX = par2;
    142            this.prevPosY = par4;
    143            this.prevPosZ = par6;
    144            this.minecartType = par8;
    145        }
    146
    147        /**
    148         * Returns the Y offset from the entity's position for any entity riding this one.
    149         */
    150        public double getMountedYOffset()
    151        {
    152            return (double)this.height * 0.0D - 0.30000001192092896D;
    153        }
    154
    155        /**
    156         * Called when the entity is attacked.
    157         */
    158        public boolean attackEntityFrom(DamageSource par1DamageSource, int par2)
    159        {
    160            if (!this.worldObj.isRemote && !this.isDead)
    161            {
    162                this.func_70494_i(-this.func_70493_k());
    163                this.func_70497_h(10);
    164                this.setBeenAttacked();
    165                this.setDamage(this.getDamage() + par2 * 10);
    166
    167                if (par1DamageSource.getEntity() instanceof EntityPlayer && ((EntityPlayer)par1DamageSource.getEntity()).capabilities.isCreativeMode)
    168                {
    169                    this.setDamage(100);
    170                }
    171
    172                if (this.getDamage() > 40)
    173                {
    174                    if (this.riddenByEntity != null)
    175                    {
    176                        this.riddenByEntity.mountEntity(this);
    177                    }
    178
    179                    this.setDead();
    180                    dropCartAsItem();
    181                }
    182
    183                return true;
    184            }
    185            else
    186            {
    187                return true;
    188            }
    189        }
    190
    191        @SideOnly(Side.CLIENT)
    192
    193        /**
    194         * Setups the entity to do the hurt animation. Only used by packets in multiplayer.
    195         */
    196        public void performHurtAnimation()
    197        {
    198            this.func_70494_i(-this.func_70493_k());
    199            this.func_70497_h(10);
    200            this.setDamage(this.getDamage() + this.getDamage() * 10);
    201        }
    202
    203        /**
    204         * Returns true if other Entities should be prevented from moving through this Entity.
    205         */
    206        public boolean canBeCollidedWith()
    207        {
    208            return !this.isDead;
    209        }
    210
    211        /**
    212         * Will get destroyed next tick.
    213         */
    214        public void setDead()
    215        {
    216            for (int var1 = 0; var1 < this.getSizeInventory(); ++var1)
    217            {
    218                ItemStack var2 = this.getStackInSlot(var1);
    219
    220                if (var2 != null)
    221                {
    222                    float var3 = this.rand.nextFloat() * 0.8F + 0.1F;
    223                    float var4 = this.rand.nextFloat() * 0.8F + 0.1F;
    224                    float var5 = this.rand.nextFloat() * 0.8F + 0.1F;
    225
    226                    while (var2.stackSize > 0)
    227                    {
    228                        int var6 = this.rand.nextInt(21) + 10;
    229
    230                        if (var6 > var2.stackSize)
    231                        {
    232                            var6 = var2.stackSize;
    233                        }
    234
    235                        var2.stackSize -= var6;
    236                        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()));
    237
    238                        if (var2.hasTagCompound())
    239                        {
    240                            var7.item.setTagCompound((NBTTagCompound)var2.getTagCompound().copy());
    241                        }
    242
    243                        float var8 = 0.05F;
    244                        var7.motionX = (double)((float)this.rand.nextGaussian() * var8);
    245                        var7.motionY = (double)((float)this.rand.nextGaussian() * var8 + 0.2F);
    246                        var7.motionZ = (double)((float)this.rand.nextGaussian() * var8);
    247                        this.worldObj.spawnEntityInWorld(var7);
    248                    }
    249                }
    250            }
    251
    252            super.setDead();
    253        }
    254
    255        /**
    256         * Called to update the entity's position/logic.
    257         */
    258        public void onUpdate()
    259        {
    260            if (this.func_70496_j() > 0)
    261            {
    262                this.func_70497_h(this.func_70496_j() - 1);
    263            }
    264
    265            if (this.getDamage() > 0)
    266            {
    267                this.setDamage(this.getDamage() - 1);
    268            }
    269
    270            if (this.posY < -64.0D)
    271            {
    272                this.kill();
    273            }
    274
    275            if (this.isMinecartPowered() && this.rand.nextInt(4) == 0 && minecartType == 2 && getClass() == EntityMinecart.class)
    276            {
    277                this.worldObj.spawnParticle("largesmoke", this.posX, this.posY + 0.8D, this.posZ, 0.0D, 0.0D, 0.0D);
    278            }
    279
    280            if (this.worldObj.isRemote)
    281            {
    282                if (this.turnProgress > 0)
    283                {
    284                    double var45 = this.posX + (this.minecartX - this.posX) / (double)this.turnProgress;
    285                    double var46 = this.posY + (this.minecartY - this.posY) / (double)this.turnProgress;
    286                    double var5 = this.posZ + (this.minecartZ - this.posZ) / (double)this.turnProgress;
    287                    double var7 = MathHelper.wrapAngleTo180_double(this.minecartYaw - (double)this.rotationYaw);
    288                    this.rotationYaw = (float)((double)this.rotationYaw + var7 / (double)this.turnProgress);
    289                    this.rotationPitch = (float)((double)this.rotationPitch + (this.minecartPitch - (double)this.rotationPitch) / (double)this.turnProgress);
    290                    --this.turnProgress;
    291                    this.setPosition(var45, var46, var5);
    292                    this.setRotation(this.rotationYaw, this.rotationPitch);
    293                }
    294                else
    295                {
    296                    this.setPosition(this.posX, this.posY, this.posZ);
    297                    this.setRotation(this.rotationYaw, this.rotationPitch);
    298                }
    299            }
    300            else
    301            {
    302                this.prevPosX = this.posX;
    303                this.prevPosY = this.posY;
    304                this.prevPosZ = this.posZ;
    305                this.motionY -= 0.03999999910593033D;
    306                int var1 = MathHelper.floor_double(this.posX);
    307                int var2 = MathHelper.floor_double(this.posY);
    308                int var3 = MathHelper.floor_double(this.posZ);
    309
    310                if (BlockRail.isRailBlockAt(this.worldObj, var1, var2 - 1, var3))
    311                {
    312                    --var2;
    313                }
    314
    315                double var4 = 0.4D;
    316                double var6 = 0.0078125D;
    317                int var8 = this.worldObj.getBlockId(var1, var2, var3);
    318
    319                if (canUseRail() && BlockRail.isRailBlock(var8))
    320                {
    321                    Vec3 var9 = this.func_70489_a(this.posX, this.posY, this.posZ);
    322                    int var10 = ((BlockRail)Block.blocksList[var8]).getBasicRailMetadata(worldObj, this, var1, var2, var3);
    323                    this.posY = (double)var2;
    324                    boolean var11 = false;
    325                    boolean var12 = false;
    326
    327                    if (var8 == Block.railPowered.blockID)
    328                    {
    329                        var11 = (worldObj.getBlockMetadata(var1, var2, var3) & 8) != 0;
    330                        var12 = !var11;
    331                    }
    332
    333                    if (((BlockRail)Block.blocksList[var8]).isPowered())
    334                    {
    335                        var10 &= 7;
    336                    }
    337
    338                    if (var10 >= 2 && var10 <= 5)
    339                    {
    340                        this.posY = (double)(var2 + 1);
    341                    }
    342
    343                    adjustSlopeVelocities(var10);
    344
    345                    int[][] var13 = field_70500_g[var10];
    346                    double var14 = (double)(var13[1][0] - var13[0][0]);
    347                    double var16 = (double)(var13[1][2] - var13[0][2]);
    348                    double var18 = Math.sqrt(var14 * var14 + var16 * var16);
    349                    double var20 = this.motionX * var14 + this.motionZ * var16;
    350
    351                    if (var20 < 0.0D)
    352                    {
    353                        var14 = -var14;
    354                        var16 = -var16;
    355                    }
    356
    357                    double var22 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ);
    358                    this.motionX = var22 * var14 / var18;
    359                    this.motionZ = var22 * var16 / var18;
    360                    double var24;
    361                    double var26;
    362
    363                    if (this.riddenByEntity != null)
    364                    {
    365                        var24 = this.riddenByEntity.motionX * this.riddenByEntity.motionX + this.riddenByEntity.motionZ * this.riddenByEntity.motionZ;
    366                        var26 = this.motionX * this.motionX + this.motionZ * this.motionZ;
    367
    368                        if (var24 > 1.0E-4D && var26 < 0.01D)
    369                        {
    370                            this.motionX += this.riddenByEntity.motionX * 0.1D;
    371                            this.motionZ += this.riddenByEntity.motionZ * 0.1D;
    372                            var12 = false;
    373                        }
    374                    }
    375
    376                    if (var12 && shouldDoRailFunctions())
    377                    {
    378                        var24 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ);
    379
    380                        if (var24 < 0.03D)
    381                        {
    382                            this.motionX *= 0.0D;
    383                            this.motionY *= 0.0D;
    384                            this.motionZ *= 0.0D;
    385                        }
    386                        else
    387                        {
    388                            this.motionX *= 0.5D;
    389                            this.motionY *= 0.0D;
    390                            this.motionZ *= 0.5D;
    391                        }
    392                    }
    393
    394                    var24 = 0.0D;
    395                    var26 = (double)var1 + 0.5D + (double)var13[0][0] * 0.5D;
    396                    double var28 = (double)var3 + 0.5D + (double)var13[0][2] * 0.5D;
    397                    double var30 = (double)var1 + 0.5D + (double)var13[1][0] * 0.5D;
    398                    double var32 = (double)var3 + 0.5D + (double)var13[1][2] * 0.5D;
    399                    var14 = var30 - var26;
    400                    var16 = var32 - var28;
    401                    double var34;
    402                    double var36;
    403
    404                    if (var14 == 0.0D)
    405                    {
    406                        this.posX = (double)var1 + 0.5D;
    407                        var24 = this.posZ - (double)var3;
    408                    }
    409                    else if (var16 == 0.0D)
    410                    {
    411                        this.posZ = (double)var3 + 0.5D;
    412                        var24 = this.posX - (double)var1;
    413                    }
    414                    else
    415                    {
    416                        var34 = this.posX - var26;
    417                        var36 = this.posZ - var28;
    418                        var24 = (var34 * var14 + var36 * var16) * 2.0D;
    419                    }
    420
    421                    this.posX = var26 + var14 * var24;
    422                    this.posZ = var28 + var16 * var24;
    423                    this.setPosition(this.posX, this.posY + (double)this.yOffset, this.posZ);
    424
    425                    moveMinecartOnRail(var1, var2, var3);
    426
    427                    if (var13[0][1] != 0 && MathHelper.floor_double(this.posX) - var1 == var13[0][0] && MathHelper.floor_double(this.posZ) - var3 == var13[0][2])
    428                    {
    429                        this.setPosition(this.posX, this.posY + (double)var13[0][1], this.posZ);
    430                    }
    431                    else if (var13[1][1] != 0 && MathHelper.floor_double(this.posX) - var1 == var13[1][0] && MathHelper.floor_double(this.posZ) - var3 == var13[1][2])
    432                    {
    433                        this.setPosition(this.posX, this.posY + (double)var13[1][1], this.posZ);
    434                    }
    435
    436                    applyDragAndPushForces();
    437
    438                    Vec3 var52 = this.func_70489_a(this.posX, this.posY, this.posZ);
    439
    440                    if (var52 != null && var9 != null)
    441                    {
    442                        double var39 = (var9.yCoord - var52.yCoord) * 0.05D;
    443                        var22 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ);
    444
    445                        if (var22 > 0.0D)
    446                        {
    447                            this.motionX = this.motionX / var22 * (var22 + var39);
    448                            this.motionZ = this.motionZ / var22 * (var22 + var39);
    449                        }
    450
    451                        this.setPosition(this.posX, var52.yCoord, this.posZ);
    452                    }
    453
    454                    int var51 = MathHelper.floor_double(this.posX);
    455                    int var53 = MathHelper.floor_double(this.posZ);
    456
    457                    if (var51 != var1 || var53 != var3)
    458                    {
    459                        var22 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ);
    460                        this.motionX = var22 * (double)(var51 - var1);
    461                        this.motionZ = var22 * (double)(var53 - var3);
    462                    }
    463
    464                    double var41;
    465
    466                    updatePushForces();
    467
    468                    if(shouldDoRailFunctions())
    469                    {
    470                        ((BlockRail)Block.blocksList[var8]).onMinecartPass(worldObj, this, var1, var2, var3);
    471                    }
    472
    473                    if (var11 && shouldDoRailFunctions())
    474                    {
    475                        var41 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ);
    476
    477                        if (var41 > 0.01D)
    478                        {
    479                            double var43 = 0.06D;
    480                            this.motionX += this.motionX / var41 * var43;
    481                            this.motionZ += this.motionZ / var41 * var43;
    482                        }
    483                        else if (var10 == 1)
    484                        {
    485                            if (this.worldObj.isBlockNormalCube(var1 - 1, var2, var3))
    486                            {
    487                                this.motionX = 0.02D;
    488                            }
    489                            else if (this.worldObj.isBlockNormalCube(var1 + 1, var2, var3))
    490                            {
    491                                this.motionX = -0.02D;
    492                            }
    493                        }
    494                        else if (var10 == 0)
    495                        {
    496                            if (this.worldObj.isBlockNormalCube(var1, var2, var3 - 1))
    497                            {
    498                                this.motionZ = 0.02D;
    499                            }
    500                            else if (this.worldObj.isBlockNormalCube(var1, var2, var3 + 1))
    501                            {
    502                                this.motionZ = -0.02D;
    503                            }
    504                        }
    505                    }
    506
    507                    this.doBlockCollisions();
    508                }
    509                else
    510                {
    511                    moveMinecartOffRail(var1, var2, var3);
    512                }
    513
    514                this.rotationPitch = 0.0F;
    515                double var47 = this.prevPosX - this.posX;
    516                double var48 = this.prevPosZ - this.posZ;
    517
    518                if (var47 * var47 + var48 * var48 > 0.001D)
    519                {
    520                    this.rotationYaw = (float)(Math.atan2(var48, var47) * 180.0D / Math.PI);
    521
    522                    if (this.field_70499_f)
    523                    {
    524                        this.rotationYaw += 180.0F;
    525                    }
    526                }
    527
    528                double var49 = (double)MathHelper.wrapAngleTo180_float(this.rotationYaw - this.prevRotationYaw);
    529
    530                if (var49 < -170.0D || var49 >= 170.0D)
    531                {
    532                    this.rotationYaw += 180.0F;
    533                    this.field_70499_f = !this.field_70499_f;
    534                }
    535
    536                this.setRotation(this.rotationYaw, this.rotationPitch);
    537
    538                AxisAlignedBB box = null;
    539                if (getCollisionHandler() != null)
    540                {
    541                    box = getCollisionHandler().getMinecartCollisionBox(this);
    542                }
    543                else
    544                {
    545                    box = boundingBox.expand(0.2D, 0.0D, 0.2D);
    546                }
    547
    548                List var15 = this.worldObj.getEntitiesWithinAABBExcludingEntity(this, box);
    549
    550                if (var15 != null && !var15.isEmpty())
    551                {
    552                    for (int var50 = 0; var50 < var15.size(); ++var50)
    553                    {
    554                        Entity var17 = (Entity)var15.get(var50);
    555
    556                        if (var17 != this.riddenByEntity && var17.canBePushed() && var17 instanceof EntityMinecart)
    557                        {
    558                            var17.applyEntityCollision(this);
    559                        }
    560                    }
    561                }
    562
    563                if (this.riddenByEntity != null && this.riddenByEntity.isDead)
    564                {
    565                    if (this.riddenByEntity.ridingEntity == this)
    566                    {
    567                        this.riddenByEntity.ridingEntity = null;
    568                    }
    569
    570                    this.riddenByEntity = null;
    571                }
    572
    573                updateFuel();
    574                MinecraftForge.EVENT_BUS.post(new MinecartUpdateEvent(this, var1, var2, var3));
    575            }
    576        }
    577
    578        @SideOnly(Side.CLIENT)
    579        public Vec3 func_70495_a(double par1, double par3, double par5, double par7)
    580        {
    581            int var9 = MathHelper.floor_double(par1);
    582            int var10 = MathHelper.floor_double(par3);
    583            int var11 = MathHelper.floor_double(par5);
    584
    585            if (BlockRail.isRailBlockAt(this.worldObj, var9, var10 - 1, var11))
    586            {
    587                --var10;
    588            }
    589
    590            int var12 = this.worldObj.getBlockId(var9, var10, var11);
    591
    592            if (!BlockRail.isRailBlock(var12))
    593            {
    594                return null;
    595            }
    596            else
    597            {
    598                int var13 = ((BlockRail)Block.blocksList[var12]).getBasicRailMetadata(worldObj, this, var9, var10, var11);
    599
    600                par3 = (double)var10;
    601
    602                if (var13 >= 2 && var13 <= 5)
    603                {
    604                    par3 = (double)(var10 + 1);
    605                }
    606
    607                int[][] var14 = field_70500_g[var13];
    608                double var15 = (double)(var14[1][0] - var14[0][0]);
    609                double var17 = (double)(var14[1][2] - var14[0][2]);
    610                double var19 = Math.sqrt(var15 * var15 + var17 * var17);
    611                var15 /= var19;
    612                var17 /= var19;
    613                par1 += var15 * par7;
    614                par5 += var17 * par7;
    615
    616                if (var14[0][1] != 0 && MathHelper.floor_double(par1) - var9 == var14[0][0] && MathHelper.floor_double(par5) - var11 == var14[0][2])
    617                {
    618                    par3 += (double)var14[0][1];
    619                }
    620                else if (var14[1][1] != 0 && MathHelper.floor_double(par1) - var9 == var14[1][0] && MathHelper.floor_double(par5) - var11 == var14[1][2])
    621                {
    622                    par3 += (double)var14[1][1];
    623                }
    624
    625                return this.func_70489_a(par1, par3, par5);
    626            }
    627        }
    628
    629        public Vec3 func_70489_a(double par1, double par3, double par5)
    630        {
    631            int var7 = MathHelper.floor_double(par1);
    632            int var8 = MathHelper.floor_double(par3);
    633            int var9 = MathHelper.floor_double(par5);
    634
    635            if (BlockRail.isRailBlockAt(this.worldObj, var7, var8 - 1, var9))
    636            {
    637                --var8;
    638            }
    639
    640            int var10 = this.worldObj.getBlockId(var7, var8, var9);
    641
    642            if (BlockRail.isRailBlock(var10))
    643            {
    644                int var11 = ((BlockRail)Block.blocksList[var10]).getBasicRailMetadata(worldObj, this, var7, var8, var9);
    645                par3 = (double)var8;
    646
    647                if (var11 >= 2 && var11 <= 5)
    648                {
    649                    par3 = (double)(var8 + 1);
    650                }
    651
    652                int[][] var12 = field_70500_g[var11];
    653                double var13 = 0.0D;
    654                double var15 = (double)var7 + 0.5D + (double)var12[0][0] * 0.5D;
    655                double var17 = (double)var8 + 0.5D + (double)var12[0][1] * 0.5D;
    656                double var19 = (double)var9 + 0.5D + (double)var12[0][2] * 0.5D;
    657                double var21 = (double)var7 + 0.5D + (double)var12[1][0] * 0.5D;
    658                double var23 = (double)var8 + 0.5D + (double)var12[1][1] * 0.5D;
    659                double var25 = (double)var9 + 0.5D + (double)var12[1][2] * 0.5D;
    660                double var27 = var21 - var15;
    661                double var29 = (var23 - var17) * 2.0D;
    662                double var31 = var25 - var19;
    663
    664                if (var27 == 0.0D)
    665                {
    666                    par1 = (double)var7 + 0.5D;
    667                    var13 = par5 - (double)var9;
    668                }
    669                else if (var31 == 0.0D)
    670                {
    671                    par5 = (double)var9 + 0.5D;
    672                    var13 = par1 - (double)var7;
    673                }
    674                else
    675                {
    676                    double var33 = par1 - var15;
    677                    double var35 = par5 - var19;
    678                    var13 = (var33 * var27 + var35 * var31) * 2.0D;
    679                }
    680
    681                par1 = var15 + var27 * var13;
    682                par3 = var17 + var29 * var13;
    683                par5 = var19 + var31 * var13;
    684
    685                if (var29 < 0.0D)
    686                {
    687                    ++par3;
    688                }
    689
    690                if (var29 > 0.0D)
    691                {
    692                    par3 += 0.5D;
    693                }
    694
    695                return Vec3.getVec3Pool().getVecFromPool(par1, par3, par5);
    696            }
    697            else
    698            {
    699                return null;
    700            }
    701        }
    702
    703        /**
    704         * (abstract) Protected helper method to write subclass entity data to NBT.
    705         */
    706        protected void writeEntityToNBT(NBTTagCompound par1NBTTagCompound)
    707        {
    708            par1NBTTagCompound.setInteger("Type", this.minecartType);
    709
    710            if (isPoweredCart())
    711            {
    712                par1NBTTagCompound.setDouble("PushX", this.pushX);
    713                par1NBTTagCompound.setDouble("PushZ", this.pushZ);
    714                par1NBTTagCompound.setInteger("Fuel", this.fuel);
    715            }
    716
    717            if (getSizeInventory() > 0)
    718            {
    719                NBTTagList var2 = new NBTTagList();
    720
    721                for (int var3 = 0; var3 < this.cargoItems.length; ++var3)
    722                {
    723                    if (this.cargoItems[var3] != null)
    724                    {
    725                        NBTTagCompound var4 = new NBTTagCompound();
    726                        var4.setByte("Slot", (byte)var3);
    727                        this.cargoItems[var3].writeToNBT(var4);
    728                        var2.appendTag(var4);
    729                    }
    730                }
    731
    732                par1NBTTagCompound.setTag("Items", var2);
    733            }
    734        }
    735
    736        /**
    737         * (abstract) Protected helper method to read subclass entity data from NBT.
    738         */
    739        protected void readEntityFromNBT(NBTTagCompound par1NBTTagCompound)
    740        {
    741            this.minecartType = par1NBTTagCompound.getInteger("Type");
    742
    743            if (isPoweredCart())
    744            {
    745                this.pushX = par1NBTTagCompound.getDouble("PushX");
    746                this.pushZ = par1NBTTagCompound.getDouble("PushZ");
    747                try
    748                {
    749                    this.fuel = par1NBTTagCompound.getInteger("Fuel");
    750                }
    751                catch (ClassCastException e)
    752                {
    753                    this.fuel = par1NBTTagCompound.getShort("Fuel");
    754                }
    755            }
    756
    757            if (getSizeInventory() > 0)
    758            {
    759                NBTTagList var2 = par1NBTTagCompound.getTagList("Items");
    760                this.cargoItems = new ItemStack[this.getSizeInventory()];
    761
    762                for (int var3 = 0; var3 < var2.tagCount(); ++var3)
    763                {
    764                    NBTTagCompound var4 = (NBTTagCompound)var2.tagAt(var3);
    765                    int var5 = var4.getByte("Slot") & 255;
    766
    767                    if (var5 >= 0 && var5 < this.cargoItems.length)
    768                    {
    769                        this.cargoItems[var5] = ItemStack.loadItemStackFromNBT(var4);
    770                    }
    771                }
    772            }
    773        }
    774
    775        @SideOnly(Side.CLIENT)
    776        public float getShadowSize()
    777        {
    778            return 0.0F;
    779        }
    780
    781        /**
    782         * Applies a velocity to each of the entities pushing them away from each other. Args: entity
    783         */
    784        public void applyEntityCollision(Entity par1Entity)
    785        {
    786            MinecraftForge.EVENT_BUS.post(new MinecartCollisionEvent(this, par1Entity));
    787            if (getCollisionHandler() != null)
    788            {
    789                getCollisionHandler().onEntityCollision(this, par1Entity);
    790                return;
    791            }
    792            if (!this.worldObj.isRemote)
    793            {
    794                if (par1Entity != this.riddenByEntity)
    795                {
    796                    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)
    797                    {
    798                        par1Entity.mountEntity(this);
    799                    }
    800
    801                    double var2 = par1Entity.posX - this.posX;
    802                    double var4 = par1Entity.posZ - this.posZ;
    803                    double var6 = var2 * var2 + var4 * var4;
    804
    805                    if (var6 >= 9.999999747378752E-5D)
    806                    {
    807                        var6 = (double)MathHelper.sqrt_double(var6);
    808                        var2 /= var6;
    809                        var4 /= var6;
    810                        double var8 = 1.0D / var6;
    811
    812                        if (var8 > 1.0D)
    813                        {
    814                            var8 = 1.0D;
    815                        }
    816
    817                        var2 *= var8;
    818                        var4 *= var8;
    819                        var2 *= 0.10000000149011612D;
    820                        var4 *= 0.10000000149011612D;
    821                        var2 *= (double)(1.0F - this.entityCollisionReduction);
    822                        var4 *= (double)(1.0F - this.entityCollisionReduction);
    823                        var2 *= 0.5D;
    824                        var4 *= 0.5D;
    825
    826                        if (par1Entity instanceof EntityMinecart)
    827                        {
    828                            double var10 = par1Entity.posX - this.posX;
    829                            double var12 = par1Entity.posZ - this.posZ;
    830                            Vec3 var14 = Vec3.getVec3Pool().getVecFromPool(var10, 0.0D, var12).normalize();
    831                            Vec3 var15 = Vec3.getVec3Pool().getVecFromPool((double)MathHelper.cos(this.rotationYaw * (float)Math.PI / 180.0F), 0.0D, (double)MathHelper.sin(this.rotationYaw * (float)Math.PI / 180.0F)).normalize();
    832                            double var16 = Math.abs(var14.dotProduct(var15));
    833
    834                            if (var16 < 0.800000011920929D)
    835                            {
    836                                return;
    837                            }
    838
    839                            double var18 = par1Entity.motionX + this.motionX;
    840                            double var20 = par1Entity.motionZ + this.motionZ;
    841
    842                            if (((EntityMinecart)par1Entity).isPoweredCart() && !isPoweredCart())
    843                            {
    844                                this.motionX *= 0.20000000298023224D;
    845                                this.motionZ *= 0.20000000298023224D;
    846                                this.addVelocity(par1Entity.motionX - var2, 0.0D, par1Entity.motionZ - var4);
    847                                par1Entity.motionX *= 0.949999988079071D;
    848                                par1Entity.motionZ *= 0.949999988079071D;
    849                            }
    850                            else if (!((EntityMinecart)par1Entity).isPoweredCart() && isPoweredCart())
    851                            {
    852                                par1Entity.motionX *= 0.20000000298023224D;
    853                                par1Entity.motionZ *= 0.20000000298023224D;
    854                                par1Entity.addVelocity(this.motionX + var2, 0.0D, this.motionZ + var4);
    855                                this.motionX *= 0.949999988079071D;
    856                                this.motionZ *= 0.949999988079071D;
    857                            }
    858                            else
    859                            {
    860                                var18 /= 2.0D;
    861                                var20 /= 2.0D;
    862                                this.motionX *= 0.20000000298023224D;
    863                                this.motionZ *= 0.20000000298023224D;
    864                                this.addVelocity(var18 - var2, 0.0D, var20 - var4);
    865                                par1Entity.motionX *= 0.20000000298023224D;
    866                                par1Entity.motionZ *= 0.20000000298023224D;
    867                                par1Entity.addVelocity(var18 + var2, 0.0D, var20 + var4);
    868                            }
    869                        }
    870                        else
    871                        {
    872                            this.addVelocity(-var2, 0.0D, -var4);
    873                            par1Entity.addVelocity(var2 / 4.0D, 0.0D, var4 / 4.0D);
    874                        }
    875                    }
    876                }
    877            }
    878        }
    879
    880        /**
    881         * Returns the number of slots in the inventory.
    882         */
    883        public int getSizeInventory()
    884        {
    885            return (minecartType == 1 && getClass() == EntityMinecart.class ? 27 : 0);
    886        }
    887
    888        /**
    889         * Returns the stack in slot i
    890         */
    891        public ItemStack getStackInSlot(int par1)
    892        {
    893            return this.cargoItems[par1];
    894        }
    895
    896        /**
    897         * Removes from an inventory slot (first arg) up to a specified number (second arg) of items and returns them in a
    898         * new stack.
    899         */
    900        public ItemStack decrStackSize(int par1, int par2)
    901        {
    902            if (this.cargoItems[par1] != null)
    903            {
    904                ItemStack var3;
    905
    906                if (this.cargoItems[par1].stackSize <= par2)
    907                {
    908                    var3 = this.cargoItems[par1];
    909                    this.cargoItems[par1] = null;
    910                    return var3;
    911                }
    912                else
    913                {
    914                    var3 = this.cargoItems[par1].splitStack(par2);
    915
    916                    if (this.cargoItems[par1].stackSize == 0)
    917                    {
    918                        this.cargoItems[par1] = null;
    919                    }
    920
    921                    return var3;
    922                }
    923            }
    924            else
    925            {
    926                return null;
    927            }
    928        }
    929
    930        /**
    931         * When some containers are closed they call this on each slot, then drop whatever it returns as an EntityItem -
    932         * like when you close a workbench GUI.
    933         */
    934        public ItemStack getStackInSlotOnClosing(int par1)
    935        {
    936            if (this.cargoItems[par1] != null)
    937            {
    938                ItemStack var2 = this.cargoItems[par1];
    939                this.cargoItems[par1] = null;
    940                return var2;
    941            }
    942            else
    943            {
    944                return null;
    945            }
    946        }
    947
    948        /**
    949         * Sets the given item stack to the specified slot in the inventory (can be crafting or armor sections).
    950         */
    951        public void setInventorySlotContents(int par1, ItemStack par2ItemStack)
    952        {
    953            this.cargoItems[par1] = par2ItemStack;
    954
    955            if (par2ItemStack != null && par2ItemStack.stackSize > this.getInventoryStackLimit())
    956            {
    957                par2ItemStack.stackSize = this.getInventoryStackLimit();
    958            }
    959        }
    960
    961        /**
    962         * Returns the name of the inventory.
    963         */
    964        public String getInvName()
    965        {
    966            return "container.minecart";
    967        }
    968
    969        /**
    970         * Returns the maximum stack size for a inventory slot. Seems to always be 64, possibly will be extended. *Isn't
    971         * this more of a set than a get?*
    972         */
    973        public int getInventoryStackLimit()
    974        {
    975            return 64;
    976        }
    977
    978        /**
    979         * Called when an the contents of an Inventory change, usually
    980         */
    981        public void onInventoryChanged() {}
    982
    983        /**
    984         * Called when a player interacts with a mob. e.g. gets milk from a cow, gets into the saddle on a pig.
    985         */
    986        public boolean interact(EntityPlayer par1EntityPlayer)
    987        {
    988            if (MinecraftForge.EVENT_BUS.post(new MinecartInteractEvent(this, par1EntityPlayer)))
    989            {
    990                return true;
    991            }
    992
    993            if (canBeRidden())
    994            {
    995                if (this.riddenByEntity != null && this.riddenByEntity instanceof EntityPlayer && this.riddenByEntity != par1EntityPlayer)
    996                {
    997                    return true;
    998                }
    999
    1000                if (!this.worldObj.isRemote)
    1001                {
    1002                    par1EntityPlayer.mountEntity(this);
    1003                }
    1004            }
    1005            else if (getSizeInventory() > 0)
    1006            {
    1007                if (!this.worldObj.isRemote)
    1008                {
    1009                    par1EntityPlayer.displayGUIChest(this);
    1010                }
    1011            }
    1012            else if (this.minecartType == 2 && getClass() == EntityMinecart.class)
    1013            {
    1014                ItemStack var2 = par1EntityPlayer.inventory.getCurrentItem();
    1015
    1016                if (var2 != null && var2.itemID == Item.coal.shiftedIndex)
    1017                {
    1018                    if (--var2.stackSize == 0)
    1019                    {
    1020                        par1EntityPlayer.inventory.setInventorySlotContents(par1EntityPlayer.inventory.currentItem, (ItemStack)null);
    1021                    }
    1022
    1023                    this.fuel += 3600;
    1024                }
    1025
    1026                this.pushX = this.posX - par1EntityPlayer.posX;
    1027                this.pushZ = this.posZ - par1EntityPlayer.posZ;
    1028            }
    1029
    1030            return true;
    1031        }
    1032
    1033        @SideOnly(Side.CLIENT)
    1034
    1035        /**
    1036         * Sets the position and rotation. Only difference from the other one is no bounding on the rotation. Args: posX,
    1037         * posY, posZ, yaw, pitch
    1038         */
    1039        public void setPositionAndRotation2(double par1, double par3, double par5, float par7, float par8, int par9)
    1040        {
    1041            this.minecartX = par1;
    1042            this.minecartY = par3;
    1043            this.minecartZ = par5;
    1044            this.minecartYaw = (double)par7;
    1045            this.minecartPitch = (double)par8;
    1046            this.turnProgress = par9 + 2;
    1047            this.motionX = this.velocityX;
    1048            this.motionY = this.velocityY;
    1049            this.motionZ = this.velocityZ;
    1050        }
    1051
    1052        /**
    1053         * Do not make give this method the name canInteractWith because it clashes with Container
    1054         */
    1055        public boolean isUseableByPlayer(EntityPlayer par1EntityPlayer)
    1056        {
    1057            return this.isDead ? false : par1EntityPlayer.getDistanceSqToEntity(this) <= 64.0D;
    1058        }
    1059
    1060        @SideOnly(Side.CLIENT)
    1061
    1062        /**
    1063         * Sets the velocity to the args. Args: x, y, z
    1064         */
    1065        public void setVelocity(double par1, double par3, double par5)
    1066        {
    1067            this.velocityX = this.motionX = par1;
    1068            this.velocityY = this.motionY = par3;
    1069            this.velocityZ = this.motionZ = par5;
    1070        }
    1071
    1072        /**
    1073         * Is this minecart powered (Fuel > 0)
    1074         */
    1075        protected boolean isMinecartPowered()
    1076        {
    1077            return (this.dataWatcher.getWatchableObjectByte(16) & 1) != 0;
    1078        }
    1079
    1080        /**
    1081         * Set if this minecart is powered (Fuel > 0)
    1082         */
    1083        protected void setMinecartPowered(boolean par1)
    1084        {
    1085            if (par1)
    1086            {
    1087                this.dataWatcher.updateObject(16, Byte.valueOf((byte)(this.dataWatcher.getWatchableObjectByte(16) | 1)));
    1088            }
    1089            else
    1090            {
    1091                this.dataWatcher.updateObject(16, Byte.valueOf((byte)(this.dataWatcher.getWatchableObjectByte(16) & -2)));
    1092            }
    1093        }
    1094
    1095        public void openChest() {}
    1096
    1097        public void closeChest() {}
    1098
    1099        /**
    1100         * Sets the current amount of damage the minecart has taken. Decreases over time. The cart breaks when this is over
    1101         * 40.
    1102         */
    1103        public void setDamage(int par1)
    1104        {
    1105            this.dataWatcher.updateObject(19, Integer.valueOf(par1));
    1106        }
    1107
    1108        /**
    1109         * Gets the current amount of damage the minecart has taken. Decreases over time. The cart breaks when this is over
    1110         * 40.
    1111         */
    1112        public int getDamage()
    1113        {
    1114            return this.dataWatcher.getWatchableObjectInt(19);
    1115        }
    1116
    1117        public void func_70497_h(int par1)
    1118        {
    1119            this.dataWatcher.updateObject(17, Integer.valueOf(par1));
    1120        }
    1121
    1122        public int func_70496_j()
    1123        {
    1124            return this.dataWatcher.getWatchableObjectInt(17);
    1125        }
    1126
    1127        public void func_70494_i(int par1)
    1128        {
    1129            this.dataWatcher.updateObject(18, Integer.valueOf(par1));
    1130        }
    1131
    1132        public int func_70493_k()
    1133        {
    1134            return this.dataWatcher.getWatchableObjectInt(18);
    1135        }
    1136
    1137        /**
    1138         * Drops the cart as a item. The exact item dropped is defined by getItemDropped().
    1139         */
    1140        public void dropCartAsItem()
    1141        {
    1142            for(ItemStack item : getItemsDropped())
    1143            {
    1144                entityDropItem(item, 0);
    1145            }
    1146        }
    1147
    1148        /**
    1149         * Override this to define which items your cart drops when broken.
    1150         * This does not include items contained in the inventory,
    1151         * that is handled elsewhere.
    1152         * @return A list of items dropped.
    1153         */
    1154        public List<ItemStack> getItemsDropped()
    1155        {
    1156            List<ItemStack> items = new ArrayList<ItemStack>();
    1157            items.add(new ItemStack(Item.minecartEmpty));
    1158
    1159            switch(minecartType)
    1160            {
    1161                case 1:
    1162                    items.add(new ItemStack(Block.chest));
    1163                    break;
    1164                case 2:
    1165                    items.add(new ItemStack(Block.stoneOvenIdle));
    1166                    break;
    1167            }
    1168            return items;
    1169        }
    1170
    1171        /**
    1172         * This function returns an ItemStack that represents this cart.
    1173         * This should be an ItemStack that can be used by the player to place the cart.
    1174         * This is the item that was registered with the cart via the registerMinecart function,
    1175         * but is not necessary the item the cart drops when destroyed.
    1176         * @return An ItemStack that can be used to place the cart.
    1177         */
    1178        public ItemStack getCartItem()
    1179        {
    1180            return MinecartRegistry.getItemForCart(this);
    1181        }
    1182
    1183        /**
    1184         * Returns true if this cart is self propelled.
    1185         * @return True if powered.
    1186         */
    1187        public boolean isPoweredCart()
    1188        {
    1189            return minecartType == 2 && getClass() == EntityMinecart.class;
    1190        }
    1191
    1192        /**
    1193         * Returns true if this cart is a storage cart
    1194         * Some carts may have inventories but not be storage carts
    1195         * and some carts without inventories may be storage carts.
    1196         * @return True if this cart should be classified as a storage cart.
    1197         */
    1198        public boolean isStorageCart()
    1199        {
    1200            return minecartType == 1 && getClass() == EntityMinecart.class;
    1201        }
    1202
    1203        /**
    1204         * Returns true if this cart can be ridden by an Entity.
    1205         * @return True if this cart can be ridden.
    1206         */
    1207        public boolean canBeRidden()
    1208        {
    1209            if(minecartType == 0 && getClass() == EntityMinecart.class)
    1210            {
    1211                return true;
    1212            }
    1213            return false;
    1214        }
    1215
    1216        /**
    1217         * Returns true if this cart can currently use rails.
    1218         * This function is mainly used to gracefully detach a minecart from a rail.
    1219         * @return True if the minecart can use rails.
    1220         */
    1221        public boolean canUseRail()
    1222        {
    1223            return canUseRail;
    1224        }
    1225
    1226        /**
    1227         * Set whether the minecart can use rails.
    1228         * This function is mainly used to gracefully detach a minecart from a rail.
    1229         * @param use Whether the minecart can currently use rails.
    1230         */
    1231        public void setCanUseRail(boolean use)
    1232        {
    1233            canUseRail = use;
    1234        }
    1235
    1236        /**
    1237         * Return false if this cart should not call IRail.onMinecartPass() and should ignore Powered Rails.
    1238         * @return True if this cart should call IRail.onMinecartPass().
    1239         */
    1240        public boolean shouldDoRailFunctions()
    1241        {
    1242            return true;
    1243        }
    1244
    1245        /**
    1246         * Simply returns the minecartType variable.
    1247         * @return minecartType
    1248         */
    1249        public int getMinecartType()
    1250        {
    1251            return minecartType;
    1252        }
    1253
    1254        /**
    1255         * Gets the current global Minecart Collision handler if none
    1256         * is registered, returns null
    1257         * @return The collision handler or null
    1258         */
    1259        public static IMinecartCollisionHandler getCollisionHandler()
    1260        {
    1261            return collisionHandler;
    1262        }
    1263
    1264        /**
    1265         * Sets the global Minecart Collision handler, overwrites any
    1266         * that is currently set.
    1267         * @param handler The new handler
    1268         */
    1269        public static void setCollisionHandler(IMinecartCollisionHandler handler)
    1270        {
    1271            collisionHandler = handler;
    1272        }
    1273
    1274        /**
    1275         * Carts should return their drag factor here
    1276         * @return The drag rate.
    1277         */
    1278        protected double getDrag()
    1279        {
    1280            return riddenByEntity != null ? defaultDragRidden : defaultDragEmpty;
    1281        }
    1282
    1283        /**
    1284         * Moved to allow overrides.
    1285         * This code applies drag and updates push forces.
    1286         */
    1287        protected void applyDragAndPushForces()
    1288        {
    1289            if(isPoweredCart())
    1290            {
    1291                double d27 = MathHelper.sqrt_double(pushX * pushX + pushZ * pushZ);
    1292                if(d27 > 0.01D)
    1293                {
    1294                    pushX /= d27;
    1295                    pushZ /= d27;
    1296                    double d29 = 0.04;
    1297                    motionX *= 0.8D;
    1298                    motionY *= 0.0D;
    1299                    motionZ *= 0.8D;
    1300                    motionX += pushX * d29;
    1301                    motionZ += pushZ * d29;
    1302                }
    1303                else
    1304                {
    1305                    motionX *= 0.9D;
    1306                    motionY *= 0.0D;
    1307                    motionZ *= 0.9D;
    1308                }
    1309            }
    1310            motionX *= getDrag();
    1311            motionY *= 0.0D;
    1312            motionZ *= getDrag();
    1313        }
    1314
    1315        /**
    1316         * Moved to allow overrides.
    1317         * This code updates push forces.
    1318         */
    1319        protected void updatePushForces()
    1320        {
    1321            if(isPoweredCart())
    1322            {
    1323                double push = MathHelper.sqrt_double(pushX * pushX + pushZ * pushZ);
    1324                if(push > 0.01D && motionX * motionX + motionZ * motionZ > 0.001D)
    1325                {
    1326                    pushX /= push;
    1327                    pushZ /= push;
    1328                    if(pushX * motionX + pushZ * motionZ < 0.0D)
    1329                    {
    1330                        pushX = 0.0D;
    1331                        pushZ = 0.0D;
    1332                    }
    1333                    else
    1334                    {
    1335                        pushX = motionX;
    1336                        pushZ = motionZ;
    1337                    }
    1338                }
    1339            }
    1340        }
    1341
    1342        /**
    1343         * Moved to allow overrides.
    1344         * This code handles minecart movement and speed capping when on a rail.
    1345         */
    1346        protected void moveMinecartOnRail(int i, int j, int k)
    1347        {
    1348            int id = worldObj.getBlockId(i, j, k);
    1349            if (!BlockRail.isRailBlock(id))
    1350            {
    1351                    return;
    1352            }
    1353            float railMaxSpeed = ((BlockRail)Block.blocksList[id]).getRailMaxSpeed(worldObj, this, i, j, k);
    1354
    1355            double maxSpeed = Math.min(railMaxSpeed, getMaxSpeedRail());
    1356            double mX = motionX;
    1357            double mZ = motionZ;
    1358            if(riddenByEntity != null)
    1359            {
    1360                mX *= 0.75D;
    1361                mZ *= 0.75D;
    1362            }
    1363            if(mX < -maxSpeed) mX = -maxSpeed;
    1364            if(mX >  maxSpeed) mX =  maxSpeed;
    1365            if(mZ < -maxSpeed) mZ = -maxSpeed;
    1366            if(mZ >  maxSpeed) mZ =  maxSpeed;
    1367            moveEntity(mX, 0.0D, mZ);
    1368        }
    1369
    1370        /**
    1371         * Moved to allow overrides.
    1372         * This code handles minecart movement and speed capping when not on a rail.
    1373         */
    1374        protected void moveMinecartOffRail(int i, int j, int k)
    1375        {
    1376            double d2 = getMaxSpeedGround();
    1377            if(!onGround)
    1378            {
    1379                d2 = getMaxSpeedAirLateral();
    1380            }
    1381            if(motionX < -d2) motionX = -d2;
    1382            if(motionX >  d2) motionX =  d2;
    1383            if(motionZ < -d2) motionZ = -d2;
    1384            if(motionZ >  d2) motionZ =  d2;
    1385            double moveY = motionY;
    1386            if(getMaxSpeedAirVertical() > 0 && motionY > getMaxSpeedAirVertical())
    1387            {
    1388                moveY = getMaxSpeedAirVertical();
    1389                if(Math.abs(motionX) < 0.3f && Math.abs(motionZ) < 0.3f)
    1390                {
    1391                    moveY = 0.15f;
    1392                    motionY = moveY;
    1393                }
    1394            }
    1395            if(onGround)
    1396            {
    1397                motionX *= 0.5D;
    1398                motionY *= 0.5D;
    1399                motionZ *= 0.5D;
    1400            }
    1401            moveEntity(motionX, moveY, motionZ);
    1402            if(!onGround)
    1403            {
    1404                motionX *= getDragAir();
    1405                motionY *= getDragAir();
    1406                motionZ *= getDragAir();
    1407            }
    1408        }
    1409
    1410        /**
    1411         * Moved to allow overrides.
    1412         * This code applies fuel consumption.
    1413         */
    1414        protected void updateFuel()
    1415        {
    1416            if (fuel > 0) fuel--;
    1417            if (fuel <= 0) pushX = pushZ = 0.0D;
    1418            setMinecartPowered(fuel > 0);
    1419        }
    1420
    1421        /**
    1422         * Moved to allow overrides, This code handle slopes affecting velocity.
    1423         * @param metadata The blocks position metadata
    1424         */
    1425        protected void adjustSlopeVelocities(int metadata)
    1426        {
    1427            double acceleration = 0.0078125D;
    1428            if (metadata == 2)
    1429            {
    1430                motionX -= acceleration;
    1431            }
    1432            else if (metadata == 3)
    1433            {
    1434                motionX += acceleration;
    1435            }
    1436            else if (metadata == 4)
    1437            {
    1438                motionZ += acceleration;
    1439            }
    1440            else if (metadata == 5)
    1441            {
    1442                motionZ -= acceleration;
    1443            }
    1444        }
    1445
    1446        /**
    1447         * Getters/setters for physics variables
    1448         */
    1449
    1450        /**
    1451         * Returns the carts max speed.
    1452         * Carts going faster than 1.1 cause issues with chunk loading.
    1453         * Carts cant traverse slopes or corners at greater than 0.5 - 0.6.
    1454         * This value is compared with the rails max speed to determine
    1455         * the carts current max speed. A normal rails max speed is 0.4.
    1456         * @return Carts max speed.
    1457         */
    1458        public float getMaxSpeedRail()
    1459        {
    1460            return maxSpeedRail;
    1461        }
    1462
    1463        public void setMaxSpeedRail(float value)
    1464        {
    1465            maxSpeedRail = value;
    1466        }
    1467
    1468        public float getMaxSpeedGround()
    1469        {
    1470            return maxSpeedGround;
    1471        }
    1472
    1473        public void setMaxSpeedGround(float value)
    1474        {
    1475            maxSpeedGround = value;
    1476        }
    1477
    1478        public float getMaxSpeedAirLateral()
    1479        {
    1480            return maxSpeedAirLateral;
    1481        }
    1482
    1483        public void setMaxSpeedAirLateral(float value)
    1484        {
    1485            maxSpeedAirLateral = value;
    1486        }
    1487
    1488        public float getMaxSpeedAirVertical()
    1489        {
    1490            return maxSpeedAirVertical;
    1491        }
    1492
    1493        public void setMaxSpeedAirVertical(float value)
    1494        {
    1495            maxSpeedAirVertical = value;
    1496        }
    1497
    1498        public double getDragAir()
    1499        {
    1500            return dragAir;
    1501        }
    1502
    1503        public void setDragAir(double value)
    1504        {
    1505            dragAir = value;
    1506        }
    1507    }