package net.minecraft.entity.item;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import java.util.List;
import net.minecraft.block.Block;
import net.minecraft.block.BlockRailBase;
import net.minecraft.block.material.Material;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.EntityMinecartCommandBlock;
import net.minecraft.entity.ai.EntityMinecartMobSpawner;
import net.minecraft.entity.monster.EntityIronGolem;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.Blocks;
import net.minecraft.init.Items;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.server.MinecraftServer;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.DamageSource;
import net.minecraft.util.MathHelper;
import net.minecraft.util.Vec3;
import net.minecraft.world.World;
import net.minecraft.world.WorldServer;
import net.minecraftforge.common.IMinecartCollisionHandler;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.event.entity.minecart.MinecartCollisionEvent;
import net.minecraftforge.event.entity.minecart.MinecartUpdateEvent;

public abstract class EntityMinecart extends Entity
{
	private boolean isInReverse;
	private String entityName;
	private static final int[][][] matrix = 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}}};
	private int turnProgress;
	private double minecartX;
	private double minecartY;
	private double minecartZ;
	private double minecartYaw;
	private double minecartPitch;
	@SideOnly(Side.CLIENT)
	private double velocityX;
	@SideOnly(Side.CLIENT)
	private double velocityY;
	@SideOnly(Side.CLIENT)
	private double velocityZ;
	private static final String __OBFID = "CL_00001670";

	/* Forge: Minecart Compatibility Layer Integration. */
	public static float defaultMaxSpeedAirLateral = 0.4f;
	public static float defaultMaxSpeedAirVertical = -1f;
	public static double defaultDragAir = 0.94999998807907104D;
	protected boolean canUseRail = true;
	protected boolean canBePushed = true;
	private static IMinecartCollisionHandler collisionHandler = null;

	/* Instance versions of the above physics properties */
	private float currentSpeedRail = getMaxCartSpeedOnRail();
	protected float maxSpeedAirLateral = defaultMaxSpeedAirLateral;
	protected float maxSpeedAirVertical = defaultMaxSpeedAirVertical;
	protected double dragAir = defaultDragAir;

	public EntityMinecart(World par1World)
	{
		super(par1World);
		this.preventEntitySpawning = true;
		this.setSize(0.98F, 0.7F);
		this.yOffset = this.height / 2.0F;
	}

	public static EntityMinecart createMinecart(World par0World, double par1, double par3, double par5, int par7)
	{
		switch (par7)
		{
			case 1:
				return new EntityMinecartChest(par0World, par1, par3, par5);
			case 2:
				return new EntityMinecartFurnace(par0World, par1, par3, par5);
			case 3:
				return new EntityMinecartTNT(par0World, par1, par3, par5);
			case 4:
				return new EntityMinecartMobSpawner(par0World, par1, par3, par5);
			case 5:
				return new EntityMinecartHopper(par0World, par1, par3, par5);
			case 6:
				return new EntityMinecartCommandBlock(par0World, par1, par3, par5);
			default:
				return new EntityMinecartEmpty(par0World, par1, par3, par5);
		}
	}

	protected boolean canTriggerWalking()
	{
		return false;
	}

	protected void entityInit()
	{
		this.dataWatcher.addObject(17, new Integer(0));
		this.dataWatcher.addObject(18, new Integer(1));
		this.dataWatcher.addObject(19, new Float(0.0F));
		this.dataWatcher.addObject(20, new Integer(0));
		this.dataWatcher.addObject(21, new Integer(6));
		this.dataWatcher.addObject(22, Byte.valueOf((byte)0));
	}

	public AxisAlignedBB getCollisionBox(Entity par1Entity)
	{
		if (getCollisionHandler() != null)
		{
			return getCollisionHandler().getCollisionBox(this, par1Entity);
		}
		return par1Entity.canBePushed() ? par1Entity.boundingBox : null;
	}

	public AxisAlignedBB getBoundingBox()
	{
		if (getCollisionHandler() != null)
		{
			return getCollisionHandler().getBoundingBox(this);
		}
		return null;
	}

	public boolean canBePushed()
	{
		return canBePushed;
	}

	public EntityMinecart(World par1World, double par2, double par4, double par6)
	{
		this(par1World);
		this.setPosition(par2, par4, par6);
		this.motionX = 0.0D;
		this.motionY = 0.0D;
		this.motionZ = 0.0D;
		this.prevPosX = par2;
		this.prevPosY = par4;
		this.prevPosZ = par6;
	}

	public double getMountedYOffset()
	{
		return (double)this.height * 0.0D - 0.30000001192092896D;
	}

	public boolean attackEntityFrom(DamageSource par1DamageSource, float par2)
	{
		if (!this.worldObj.isRemote && !this.isDead)
		{
			if (this.isEntityInvulnerable())
			{
				return false;
			}
			else
			{
				this.setRollingDirection(-this.getRollingDirection());
				this.setRollingAmplitude(10);
				this.setBeenAttacked();
				this.setDamage(this.getDamage() + par2 * 10.0F);
				boolean flag = par1DamageSource.getEntity() instanceof EntityPlayer && ((EntityPlayer)par1DamageSource.getEntity()).capabilities.isCreativeMode;

				if (flag || this.getDamage() > 40.0F)
				{
					if (this.riddenByEntity != null)
					{
						this.riddenByEntity.mountEntity(this);
					}

					if (flag && !this.hasCustomInventoryName())
					{
						this.setDead();
					}
					else
					{
						this.killMinecart(par1DamageSource);
					}
				}

				return true;
			}
		}
		else
		{
			return true;
		}
	}

	public void killMinecart(DamageSource par1DamageSource)
	{
		this.setDead();
		ItemStack itemstack = new ItemStack(Items.minecart, 1);

		if (this.entityName != null)
		{
			itemstack.setStackDisplayName(this.entityName);
		}

		this.entityDropItem(itemstack, 0.0F);
	}

	@SideOnly(Side.CLIENT)
	public void performHurtAnimation()
	{
		this.setRollingDirection(-this.getRollingDirection());
		this.setRollingAmplitude(10);
		this.setDamage(this.getDamage() + this.getDamage() * 10.0F);
	}

	public boolean canBeCollidedWith()
	{
		return !this.isDead;
	}

	public void setDead()
	{
		super.setDead();
	}

	public void onUpdate()
	{
		if (this.getRollingAmplitude() > 0)
		{
			this.setRollingAmplitude(this.getRollingAmplitude() - 1);
		}

		if (this.getDamage() > 0.0F)
		{
			this.setDamage(this.getDamage() - 1.0F);
		}

		if (this.posY < -64.0D)
		{
			this.kill();
		}

		int i;

		if (!this.worldObj.isRemote && this.worldObj instanceof WorldServer)
		{
			this.worldObj.theProfiler.startSection("portal");
			MinecraftServer minecraftserver = ((WorldServer)this.worldObj).func_73046_m();
			i = this.getMaxInPortalTime();

			if (this.inPortal)
			{
				if (minecraftserver.getAllowNether())
				{
					if (this.ridingEntity == null && this.portalCounter++ >= i)
					{
						this.portalCounter = i;
						this.timeUntilPortal = this.getPortalCooldown();
						byte b0;

						if (this.worldObj.provider.dimensionId == -1)
						{
							b0 = 0;
						}
						else
						{
							b0 = -1;
						}

						this.travelToDimension(b0);
					}

					this.inPortal = false;
				}
			}
			else
			{
				if (this.portalCounter > 0)
				{
					this.portalCounter -= 4;
				}

				if (this.portalCounter < 0)
				{
					this.portalCounter = 0;
				}
			}

			if (this.timeUntilPortal > 0)
			{
				--this.timeUntilPortal;
			}

			this.worldObj.theProfiler.endSection();
		}

		if (this.worldObj.isRemote)
		{
			if (this.turnProgress > 0)
			{
				double d6 = this.posX + (this.minecartX - this.posX) / (double)this.turnProgress;
				double d7 = this.posY + (this.minecartY - this.posY) / (double)this.turnProgress;
				double d1 = this.posZ + (this.minecartZ - this.posZ) / (double)this.turnProgress;
				double d3 = MathHelper.wrapAngleTo180_double(this.minecartYaw - (double)this.rotationYaw);
				this.rotationYaw = (float)((double)this.rotationYaw + d3 / (double)this.turnProgress);
				this.rotationPitch = (float)((double)this.rotationPitch + (this.minecartPitch - (double)this.rotationPitch) / (double)this.turnProgress);
				--this.turnProgress;
				this.setPosition(d6, d7, d1);
				this.setRotation(this.rotationYaw, this.rotationPitch);
			}
			else
			{
				this.setPosition(this.posX, this.posY, this.posZ);
				this.setRotation(this.rotationYaw, this.rotationPitch);
			}
		}
		else
		{
			this.prevPosX = this.posX;
			this.prevPosY = this.posY;
			this.prevPosZ = this.posZ;
			this.motionY -= 0.03999999910593033D;
			int l = MathHelper.floor_double(this.posX);
			i = MathHelper.floor_double(this.posY);
			int i1 = MathHelper.floor_double(this.posZ);

			if (BlockRailBase.func_150049_b_(this.worldObj, l, i - 1, i1))
			{
				--i;
			}

			double d0 = 0.4D;
			double d2 = 0.0078125D;
			Block block = this.worldObj.getBlock(l, i, i1);

			if (canUseRail() && BlockRailBase.func_150051_a(block))
			{
				float railMaxSpeed = ((BlockRailBase)block).getRailMaxSpeed(worldObj, this, l, i, i1);
				double maxSpeed = Math.min(railMaxSpeed, getCurrentCartSpeedCapOnRail());
				this.func_145821_a(l, i, i1, maxSpeed, getSlopeAdjustment(), block, ((BlockRailBase)block).getBasicRailMetadata(worldObj, this, l, i, i1));

				if (block == Blocks.activator_rail)
				{
					this.onActivatorRailPass(l, i, i1, (worldObj.getBlockMetadata(l, i, i1) & 8) != 0);
				}
			}
			else
			{
				this.func_94088_b(onGround ? d0 : getMaxSpeedAirLateral());
			}

			this.func_145775_I();
			this.rotationPitch = 0.0F;
			double d8 = this.prevPosX - this.posX;
			double d4 = this.prevPosZ - this.posZ;

			if (d8 * d8 + d4 * d4 > 0.001D)
			{
				this.rotationYaw = (float)(Math.atan2(d4, d8) * 180.0D / Math.PI);

				if (this.isInReverse)
				{
					this.rotationYaw += 180.0F;
				}
			}

			double d5 = (double)MathHelper.wrapAngleTo180_float(this.rotationYaw - this.prevRotationYaw);

			if (d5 < -170.0D || d5 >= 170.0D)
			{
				this.rotationYaw += 180.0F;
				this.isInReverse = !this.isInReverse;
			}

			this.setRotation(this.rotationYaw, this.rotationPitch);

			AxisAlignedBB box;
			if (getCollisionHandler() != null)
			{
				box = getCollisionHandler().getMinecartCollisionBox(this);
			}
			else
			{
				box = boundingBox.expand(0.2D, 0.0D, 0.2D);
			}

			List list = this.worldObj.getEntitiesWithinAABBExcludingEntity(this, box);

			if (list != null && !list.isEmpty())
			{
				for (int k = 0; k < list.size(); ++k)
				{
					Entity entity = (Entity)list.get(k);

					if (entity != this.riddenByEntity && entity.canBePushed() && entity instanceof EntityMinecart)
					{
						entity.applyEntityCollision(this);
					}
				}
			}

			if (this.riddenByEntity != null && this.riddenByEntity.isDead)
			{
				if (this.riddenByEntity.ridingEntity == this)
				{
					this.riddenByEntity.ridingEntity = null;
				}

				this.riddenByEntity = null;
			}

			MinecraftForge.EVENT_BUS.post(new MinecartUpdateEvent(this, l, i, i1));
		}
	}

	public void onActivatorRailPass(int par1, int par2, int par3, boolean par4) {}

	protected void func_94088_b(double par1)
	{
		if (this.motionX < -par1)
		{
			this.motionX = -par1;
		}

		if (this.motionX > par1)
		{
			this.motionX = par1;
		}

		if (this.motionZ < -par1)
		{
			this.motionZ = -par1;
		}

		if (this.motionZ > par1)
		{
			this.motionZ = par1;
		}

		double moveY = motionY;
		if(getMaxSpeedAirVertical() > 0 && motionY > getMaxSpeedAirVertical())
		{
			moveY = getMaxSpeedAirVertical();
			if(Math.abs(motionX) < 0.3f && Math.abs(motionZ) < 0.3f)
			{
				moveY = 0.15f;
				motionY = moveY;
			}
		}

		if (this.onGround)
		{
			this.motionX *= 0.5D;
			this.motionY *= 0.5D;
			this.motionZ *= 0.5D;
		}

		this.moveEntity(this.motionX, moveY, this.motionZ);

		if (!this.onGround)
		{
			this.motionX *= getDragAir();
			this.motionY *= getDragAir();
			this.motionZ *= getDragAir();
		}
	}

	protected void func_145821_a(int p_145821_1_, int p_145821_2_, int p_145821_3_, double p_145821_4_, double p_145821_6_, Block p_145821_8_, int p_145821_9_)
	{
		this.fallDistance = 0.0F;
		Vec3 vec3 = this.func_70489_a(this.posX, this.posY, this.posZ);
		this.posY = (double)p_145821_2_;
		boolean flag = false;
		boolean flag1 = false;

		if (p_145821_8_ == Blocks.golden_rail)
		{
			flag = (worldObj.getBlockMetadata(p_145821_1_, p_145821_2_, p_145821_3_) & 8) != 0;
			flag1 = !flag;
		}

		if (((BlockRailBase)p_145821_8_).isPowered())
		{
			p_145821_9_ &= 7;
		}

		if (p_145821_9_ >= 2 && p_145821_9_ <= 5)
		{
			this.posY = (double)(p_145821_2_ + 1);
		}

		if (p_145821_9_ == 2)
		{
			this.motionX -= p_145821_6_;
		}

		if (p_145821_9_ == 3)
		{
			this.motionX += p_145821_6_;
		}

		if (p_145821_9_ == 4)
		{
			this.motionZ += p_145821_6_;
		}

		if (p_145821_9_ == 5)
		{
			this.motionZ -= p_145821_6_;
		}

		int[][] aint = matrix[p_145821_9_];
		double d2 = (double)(aint[1][0] - aint[0][0]);
		double d3 = (double)(aint[1][2] - aint[0][2]);
		double d4 = Math.sqrt(d2 * d2 + d3 * d3);
		double d5 = this.motionX * d2 + this.motionZ * d3;

		if (d5 < 0.0D)
		{
			d2 = -d2;
			d3 = -d3;
		}

		double d6 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ);

		if (d6 > 2.0D)
		{
			d6 = 2.0D;
		}

		this.motionX = d6 * d2 / d4;
		this.motionZ = d6 * d3 / d4;
		double d7;
		double d8;
		double d9;
		double d10;

		if (this.riddenByEntity != null && this.riddenByEntity instanceof EntityLivingBase)
		{
			d7 = (double)((EntityLivingBase)this.riddenByEntity).moveForward;

			if (d7 > 0.0D)
			{
				d8 = -Math.sin((double)(this.riddenByEntity.rotationYaw * (float)Math.PI / 180.0F));
				d9 = Math.cos((double)(this.riddenByEntity.rotationYaw * (float)Math.PI / 180.0F));
				d10 = this.motionX * this.motionX + this.motionZ * this.motionZ;

				if (d10 < 0.01D)
				{
					this.motionX += d8 * 0.1D;
					this.motionZ += d9 * 0.1D;
					flag1 = false;
				}
			}
		}

		if (flag1 && shouldDoRailFunctions())
		{
			d7 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ);

			if (d7 < 0.03D)
			{
				this.motionX *= 0.0D;
				this.motionY *= 0.0D;
				this.motionZ *= 0.0D;
			}
			else
			{
				this.motionX *= 0.5D;
				this.motionY *= 0.0D;
				this.motionZ *= 0.5D;
			}
		}

		d7 = 0.0D;
		d8 = (double)p_145821_1_ + 0.5D + (double)aint[0][0] * 0.5D;
		d9 = (double)p_145821_3_ + 0.5D + (double)aint[0][2] * 0.5D;
		d10 = (double)p_145821_1_ + 0.5D + (double)aint[1][0] * 0.5D;
		double d11 = (double)p_145821_3_ + 0.5D + (double)aint[1][2] * 0.5D;
		d2 = d10 - d8;
		d3 = d11 - d9;
		double d12;
		double d13;

		if (d2 == 0.0D)
		{
			this.posX = (double)p_145821_1_ + 0.5D;
			d7 = this.posZ - (double)p_145821_3_;
		}
		else if (d3 == 0.0D)
		{
			this.posZ = (double)p_145821_3_ + 0.5D;
			d7 = this.posX - (double)p_145821_1_;
		}
		else
		{
			d12 = this.posX - d8;
			d13 = this.posZ - d9;
			d7 = (d12 * d2 + d13 * d3) * 2.0D;
		}

		this.posX = d8 + d2 * d7;
		this.posZ = d9 + d3 * d7;
		this.setPosition(this.posX, this.posY + (double)this.yOffset, this.posZ);

		moveMinecartOnRail(p_145821_1_, p_145821_2_, p_145821_3_, p_145821_4_);

		if (aint[0][1] != 0 && MathHelper.floor_double(this.posX) - p_145821_1_ == aint[0][0] && MathHelper.floor_double(this.posZ) - p_145821_3_ == aint[0][2])
		{
			this.setPosition(this.posX, this.posY + (double)aint[0][1], this.posZ);
		}
		else if (aint[1][1] != 0 && MathHelper.floor_double(this.posX) - p_145821_1_ == aint[1][0] && MathHelper.floor_double(this.posZ) - p_145821_3_ == aint[1][2])
		{
			this.setPosition(this.posX, this.posY + (double)aint[1][1], this.posZ);
		}

		this.applyDrag();
		Vec3 vec31 = this.func_70489_a(this.posX, this.posY, this.posZ);

		if (vec31 != null && vec3 != null)
		{
			double d14 = (vec3.yCoord - vec31.yCoord) * 0.05D;
			d6 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ);

			if (d6 > 0.0D)
			{
				this.motionX = this.motionX / d6 * (d6 + d14);
				this.motionZ = this.motionZ / d6 * (d6 + d14);
			}

			this.setPosition(this.posX, vec31.yCoord, this.posZ);
		}

		int j1 = MathHelper.floor_double(this.posX);
		int i1 = MathHelper.floor_double(this.posZ);

		if (j1 != p_145821_1_ || i1 != p_145821_3_)
		{
			d6 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ);
			this.motionX = d6 * (double)(j1 - p_145821_1_);
			this.motionZ = d6 * (double)(i1 - p_145821_3_);
		}

		if(shouldDoRailFunctions())
		{
			((BlockRailBase)p_145821_8_).onMinecartPass(worldObj, this, p_145821_1_, p_145821_2_, p_145821_3_);
		}

		if (flag && shouldDoRailFunctions())
		{
			double d15 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ);

			if (d15 > 0.01D)
			{
				double d16 = 0.06D;
				this.motionX += this.motionX / d15 * d16;
				this.motionZ += this.motionZ / d15 * d16;
			}
			else if (p_145821_9_ == 1)
			{
				if (this.worldObj.getBlock(p_145821_1_ - 1, p_145821_2_, p_145821_3_).isNormalCube())
				{
					this.motionX = 0.02D;
				}
				else if (this.worldObj.getBlock(p_145821_1_ + 1, p_145821_2_, p_145821_3_).isNormalCube())
				{
					this.motionX = -0.02D;
				}
			}
			else if (p_145821_9_ == 0)
			{
				if (this.worldObj.getBlock(p_145821_1_, p_145821_2_, p_145821_3_ - 1).isNormalCube())
				{
					this.motionZ = 0.02D;
				}
				else if (this.worldObj.getBlock(p_145821_1_, p_145821_2_, p_145821_3_ + 1).isNormalCube())
				{
					this.motionZ = -0.02D;
				}
			}
		}
	}

	protected void applyDrag()
	{
		if (this.riddenByEntity != null)
		{
			this.motionX *= 0.996999979019165D;
			this.motionY *= 0.0D;
			this.motionZ *= 0.996999979019165D;
		}
		else
		{
			this.motionX *= 0.9599999785423279D;
			this.motionY *= 0.0D;
			this.motionZ *= 0.9599999785423279D;
		}
	}

	@SideOnly(Side.CLIENT)
	public Vec3 func_70495_a(double par1, double par3, double par5, double par7)
	{
		int i = MathHelper.floor_double(par1);
		int j = MathHelper.floor_double(par3);
		int k = MathHelper.floor_double(par5);

		if (BlockRailBase.func_150049_b_(this.worldObj, i, j - 1, k))
		{
			--j;
		}

		Block block = this.worldObj.getBlock(i, j, k);

		if (!BlockRailBase.func_150051_a(block))
		{
			return null;
		}
		else
		{
			int l = ((BlockRailBase)block).getBasicRailMetadata(worldObj, this, i, j, k);

			par3 = (double)j;

			if (l >= 2 && l <= 5)
			{
				par3 = (double)(j + 1);
			}

			int[][] aint = matrix[l];
			double d4 = (double)(aint[1][0] - aint[0][0]);
			double d5 = (double)(aint[1][2] - aint[0][2]);
			double d6 = Math.sqrt(d4 * d4 + d5 * d5);
			d4 /= d6;
			d5 /= d6;
			par1 += d4 * par7;
			par5 += d5 * par7;

			if (aint[0][1] != 0 && MathHelper.floor_double(par1) - i == aint[0][0] && MathHelper.floor_double(par5) - k == aint[0][2])
			{
				par3 += (double)aint[0][1];
			}
			else if (aint[1][1] != 0 && MathHelper.floor_double(par1) - i == aint[1][0] && MathHelper.floor_double(par5) - k == aint[1][2])
			{
				par3 += (double)aint[1][1];
			}

			return this.func_70489_a(par1, par3, par5);
		}
	}

	public Vec3 func_70489_a(double par1, double par3, double par5)
	{
		int i = MathHelper.floor_double(par1);
		int j = MathHelper.floor_double(par3);
		int k = MathHelper.floor_double(par5);

		if (BlockRailBase.func_150049_b_(this.worldObj, i, j - 1, k))
		{
			--j;
		}

		Block block = this.worldObj.getBlock(i, j, k);

		if (BlockRailBase.func_150051_a(block))
		{
			int l = ((BlockRailBase)block).getBasicRailMetadata(worldObj, this, i, j, k);
			par3 = (double)j;

			if (l >= 2 && l <= 5)
			{
				par3 = (double)(j + 1);
			}

			int[][] aint = matrix[l];
			double d3 = 0.0D;
			double d4 = (double)i + 0.5D + (double)aint[0][0] * 0.5D;
			double d5 = (double)j + 0.5D + (double)aint[0][1] * 0.5D;
			double d6 = (double)k + 0.5D + (double)aint[0][2] * 0.5D;
			double d7 = (double)i + 0.5D + (double)aint[1][0] * 0.5D;
			double d8 = (double)j + 0.5D + (double)aint[1][1] * 0.5D;
			double d9 = (double)k + 0.5D + (double)aint[1][2] * 0.5D;
			double d10 = d7 - d4;
			double d11 = (d8 - d5) * 2.0D;
			double d12 = d9 - d6;

			if (d10 == 0.0D)
			{
				par1 = (double)i + 0.5D;
				d3 = par5 - (double)k;
			}
			else if (d12 == 0.0D)
			{
				par5 = (double)k + 0.5D;
				d3 = par1 - (double)i;
			}
			else
			{
				double d13 = par1 - d4;
				double d14 = par5 - d6;
				d3 = (d13 * d10 + d14 * d12) * 2.0D;
			}

			par1 = d4 + d10 * d3;
			par3 = d5 + d11 * d3;
			par5 = d6 + d12 * d3;

			if (d11 < 0.0D)
			{
				++par3;
			}

			if (d11 > 0.0D)
			{
				par3 += 0.5D;
			}

			return this.worldObj.getWorldVec3Pool().getVecFromPool(par1, par3, par5);
		}
		else
		{
			return null;
		}
	}

	protected void readEntityFromNBT(NBTTagCompound par1NBTTagCompound)
	{
		if (par1NBTTagCompound.getBoolean("CustomDisplayTile"))
		{
			this.func_145819_k(par1NBTTagCompound.getInteger("DisplayTile"));
			this.setDisplayTileData(par1NBTTagCompound.getInteger("DisplayData"));
			this.setDisplayTileOffset(par1NBTTagCompound.getInteger("DisplayOffset"));
		}

		if (par1NBTTagCompound.hasKey("CustomName", 8) && par1NBTTagCompound.getString("CustomName").length() > 0)
		{
			this.entityName = par1NBTTagCompound.getString("CustomName");
		}
	}

	protected void writeEntityToNBT(NBTTagCompound par1NBTTagCompound)
	{
		if (this.hasDisplayTile())
		{
			par1NBTTagCompound.setBoolean("CustomDisplayTile", true);
			par1NBTTagCompound.setInteger("DisplayTile", this.func_145820_n().getMaterial() == Material.air ? 0 : Block.getIdFromBlock(this.func_145820_n()));
			par1NBTTagCompound.setInteger("DisplayData", this.getDisplayTileData());
			par1NBTTagCompound.setInteger("DisplayOffset", this.getDisplayTileOffset());
		}

		if (this.entityName != null && this.entityName.length() > 0)
		{
			par1NBTTagCompound.setString("CustomName", this.entityName);
		}
	}

	@SideOnly(Side.CLIENT)
	public float getShadowSize()
	{
		return 0.0F;
	}

	public void applyEntityCollision(Entity par1Entity)
	{
		MinecraftForge.EVENT_BUS.post(new MinecartCollisionEvent(this, par1Entity));
		if (getCollisionHandler() != null)
		{
			getCollisionHandler().onEntityCollision(this, par1Entity);
			return;
		}
		if (!this.worldObj.isRemote)
		{
			if (par1Entity != this.riddenByEntity)
			{
				if (par1Entity instanceof EntityLivingBase && !(par1Entity instanceof EntityPlayer) && !(par1Entity instanceof EntityIronGolem) && canBeRidden()               && this.motionX * this.motionX + this.motionZ * this.motionZ > 0.01D && this.riddenByEntity == null && par1Entity.ridingEntity == null)
				{
					par1Entity.mountEntity(this);
				}

				double d0 = par1Entity.posX - this.posX;
				double d1 = par1Entity.posZ - this.posZ;
				double d2 = d0 * d0 + d1 * d1;

				if (d2 >= 9.999999747378752E-5D)
				{
					d2 = (double)MathHelper.sqrt_double(d2);
					d0 /= d2;
					d1 /= d2;
					double d3 = 1.0D / d2;

					if (d3 > 1.0D)
					{
						d3 = 1.0D;
					}

					d0 *= d3;
					d1 *= d3;
					d0 *= 0.10000000149011612D;
					d1 *= 0.10000000149011612D;
					d0 *= (double)(1.0F - this.entityCollisionReduction);
					d1 *= (double)(1.0F - this.entityCollisionReduction);
					d0 *= 0.5D;
					d1 *= 0.5D;

					if (par1Entity instanceof EntityMinecart)
					{
						double d4 = par1Entity.posX - this.posX;
						double d5 = par1Entity.posZ - this.posZ;
						Vec3 vec3 = this.worldObj.getWorldVec3Pool().getVecFromPool(d4, 0.0D, d5).normalize();
						Vec3 vec31 = 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();
						double d6 = Math.abs(vec3.dotProduct(vec31));

						if (d6 < 0.800000011920929D)
						{
							return;
						}

						double d7 = par1Entity.motionX + this.motionX;
						double d8 = par1Entity.motionZ + this.motionZ;

						if (((EntityMinecart)par1Entity).isPoweredCart() && !isPoweredCart())
						{
							this.motionX *= 0.20000000298023224D;
							this.motionZ *= 0.20000000298023224D;
							this.addVelocity(par1Entity.motionX - d0, 0.0D, par1Entity.motionZ - d1);
							par1Entity.motionX *= 0.949999988079071D;
							par1Entity.motionZ *= 0.949999988079071D;
						}
						else if (((EntityMinecart)par1Entity).isPoweredCart() && !isPoweredCart())
						{
							par1Entity.motionX *= 0.20000000298023224D;
							par1Entity.motionZ *= 0.20000000298023224D;
							par1Entity.addVelocity(this.motionX + d0, 0.0D, this.motionZ + d1);
							this.motionX *= 0.949999988079071D;
							this.motionZ *= 0.949999988079071D;
						}
						else
						{
							d7 /= 2.0D;
							d8 /= 2.0D;
							this.motionX *= 0.20000000298023224D;
							this.motionZ *= 0.20000000298023224D;
							this.addVelocity(d7 - d0, 0.0D, d8 - d1);
							par1Entity.motionX *= 0.20000000298023224D;
							par1Entity.motionZ *= 0.20000000298023224D;
							par1Entity.addVelocity(d7 + d0, 0.0D, d8 + d1);
						}
					}
					else
					{
						this.addVelocity(-d0, 0.0D, -d1);
						par1Entity.addVelocity(d0 / 4.0D, 0.0D, d1 / 4.0D);
					}
				}
			}
		}
	}

	@SideOnly(Side.CLIENT)
	public void setPositionAndRotation2(double par1, double par3, double par5, float par7, float par8, int par9)
	{
		this.minecartX = par1;
		this.minecartY = par3;
		this.minecartZ = par5;
		this.minecartYaw = (double)par7;
		this.minecartPitch = (double)par8;
		this.turnProgress = par9 + 2;
		this.motionX = this.velocityX;
		this.motionY = this.velocityY;
		this.motionZ = this.velocityZ;
	}

	public void setDamage(float par1)
	{
		this.dataWatcher.updateObject(19, Float.valueOf(par1));
	}

	@SideOnly(Side.CLIENT)
	public void setVelocity(double par1, double par3, double par5)
	{
		this.velocityX = this.motionX = par1;
		this.velocityY = this.motionY = par3;
		this.velocityZ = this.motionZ = par5;
	}

	public float getDamage()
	{
		return this.dataWatcher.getWatchableObjectFloat(19);
	}

	public void setRollingAmplitude(int par1)
	{
		this.dataWatcher.updateObject(17, Integer.valueOf(par1));
	}

	public int getRollingAmplitude()
	{
		return this.dataWatcher.getWatchableObjectInt(17);
	}

	public void setRollingDirection(int par1)
	{
		this.dataWatcher.updateObject(18, Integer.valueOf(par1));
	}

	public int getRollingDirection()
	{
		return this.dataWatcher.getWatchableObjectInt(18);
	}

	public abstract int getMinecartType();

	public Block func_145820_n()
	{
		if (!this.hasDisplayTile())
		{
			return this.func_145817_o();
		}
		else
		{
			int i = this.getDataWatcher().getWatchableObjectInt(20) & 65535;
			return Block.getBlockById(i);
		}
	}

	public Block func_145817_o()
	{
		return Blocks.air;
	}

	public int getDisplayTileData()
	{
		return !this.hasDisplayTile() ? this.getDefaultDisplayTileData() : this.getDataWatcher().getWatchableObjectInt(20) >> 16;
	}

	public int getDefaultDisplayTileData()
	{
		return 0;
	}

	public int getDisplayTileOffset()
	{
		return !this.hasDisplayTile() ? this.getDefaultDisplayTileOffset() : this.getDataWatcher().getWatchableObjectInt(21);
	}

	public int getDefaultDisplayTileOffset()
	{
		return 6;
	}

	public void func_145819_k(int p_145819_1_)
	{
		this.getDataWatcher().updateObject(20, Integer.valueOf(p_145819_1_ & 65535 | this.getDisplayTileData() << 16));
		this.setHasDisplayTile(true);
	}

	public void setDisplayTileData(int par1)
	{
		this.getDataWatcher().updateObject(20, Integer.valueOf(Block.getIdFromBlock(this.func_145820_n()) & 65535 | par1 << 16));
		this.setHasDisplayTile(true);
	}

	public void setDisplayTileOffset(int par1)
	{
		this.getDataWatcher().updateObject(21, Integer.valueOf(par1));
		this.setHasDisplayTile(true);
	}

	public boolean hasDisplayTile()
	{
		return this.getDataWatcher().getWatchableObjectByte(22) == 1;
	}

	public void setHasDisplayTile(boolean par1)
	{
		this.getDataWatcher().updateObject(22, Byte.valueOf((byte)(par1 ? 1 : 0)));
	}

	public void setMinecartName(String par1Str)
	{
		this.entityName = par1Str;
	}

	public String getCommandSenderName()
	{
		return this.entityName != null ? this.entityName : super.getCommandSenderName();
	}

	public boolean hasCustomInventoryName()
	{
		return this.entityName != null;
	}

	public String func_95999_t()
	{
		return this.entityName;
	}
	/* =================================== FORGE START ===========================================*/
	/**
	 * Moved to allow overrides.
	 * This code handles minecart movement and speed capping when on a rail.
	 */
	public void moveMinecartOnRail(int x, int y, int z, double par4){
		double d12 = this.motionX;
		double d13 = this.motionZ;

		if (this.riddenByEntity != null)
		{
			d12 *= 0.75D;
			d13 *= 0.75D;
		}

		if (d12 < -par4)
		{
			d12 = -par4;
		}

		if (d12 > par4)
		{
			d12 = par4;
		}

		if (d13 < -par4)
		{
			d13 = -par4;
		}

		if (d13 > par4)
		{
			d13 = par4;
		}

		this.moveEntity(d12, 0.0D, d13);
	}

	/**
	 * Gets the current global Minecart Collision handler if none
	 * is registered, returns null
	 * @return The collision handler or null
	 */
	public static IMinecartCollisionHandler getCollisionHandler()
	{
		return collisionHandler;
	}

	/**
	 * Sets the global Minecart Collision handler, overwrites any
	 * that is currently set.
	 * @param handler The new handler
	 */
	public static void setCollisionHandler(IMinecartCollisionHandler handler)
	{
		collisionHandler = handler;
	}

	/**
	 * This function returns an ItemStack that represents this cart.
	 * This should be an ItemStack that can be used by the player to place the cart,
	 * but is not necessary the item the cart drops when destroyed.
	 * @return An ItemStack that can be used to place the cart.
	 */
	public ItemStack getCartItem()
	{
		if (this instanceof EntityMinecartFurnace)
		{
			return new ItemStack(Items.furnace_minecart);
		}
		else if (this instanceof EntityMinecartChest)
		{
			return new ItemStack(Items.chest_minecart);
		}
		else if (this instanceof EntityMinecartTNT)
		{
			return new ItemStack(Items.tnt_minecart);
		}
		else if (this instanceof EntityMinecartHopper)
		{
			return new ItemStack(Items.hopper_minecart);
		}
		else if (this instanceof EntityMinecartHopper)
		{
			return new ItemStack(Items.command_block_minecart);
		}
		return new ItemStack(Items.minecart);
	}

	/**
	 * Returns true if this cart can currently use rails.
	 * This function is mainly used to gracefully detach a minecart from a rail.
	 * @return True if the minecart can use rails.
	 */
	public boolean canUseRail()
	{
		return canUseRail;
	}

	/**
	 * Set whether the minecart can use rails.
	 * This function is mainly used to gracefully detach a minecart from a rail.
	 * @param use Whether the minecart can currently use rails.
	 */
	public void setCanUseRail(boolean use)
	{
		canUseRail = use;
	}

	/**
	 * Return false if this cart should not call onMinecartPass() and should ignore Powered Rails.
	 * @return True if this cart should call onMinecartPass().
	 */
	public boolean shouldDoRailFunctions()
	{
		return true;
	}

	/**
	 * Returns true if this cart is self propelled.
	 * @return True if powered.
	 */
	public boolean isPoweredCart()
	{
		return getMinecartType()== 2;
	}

	/**
	 * Returns true if this cart can be ridden by an Entity.
	 * @return True if this cart can be ridden.
	 */
	public boolean canBeRidden()
	{
		if(this instanceof EntityMinecartEmpty)
		{
			return true;
		}
		return false;
	}

	/**
	 * Getters/setters for physics variables
	 */

	/**
	 * Returns the carts max speed when traveling on rails. Carts going faster
	 * than 1.1 cause issues with chunk loading. Carts cant traverse slopes or
	 * corners at greater than 0.5 - 0.6. This value is compared with the rails
	 * max speed and the carts current speed cap to determine the carts current
	 * max speed. A normal rail's max speed is 0.4.
	 *
	 * @return Carts max speed.
	 */
	public float getMaxCartSpeedOnRail()
	{
		return 1.2f;
	}

	/**
	 * Returns the current speed cap for the cart when traveling on rails. This
	 * functions differs from getMaxCartSpeedOnRail() in that it controls
	 * current movement and cannot be overridden. The value however can never be
	 * higher than getMaxCartSpeedOnRail().
	 *
	 * @return
	 */
	public final float getCurrentCartSpeedCapOnRail()
	{
		return currentSpeedRail;
	}

	public final void setCurrentCartSpeedCapOnRail(float value)
	{
		value = Math.min(value, getMaxCartSpeedOnRail());
		currentSpeedRail = value;
	}

	public float getMaxSpeedAirLateral()
	{
		return maxSpeedAirLateral;
	}

	public void setMaxSpeedAirLateral(float value)
	{
		maxSpeedAirLateral = value;
	}

	public float getMaxSpeedAirVertical()
	{
		return maxSpeedAirVertical;
	}

	public void setMaxSpeedAirVertical(float value)
	{
		maxSpeedAirVertical = value;
	}

	public double getDragAir()
	{
		return dragAir;
	}

	public void setDragAir(double value)
	{
		dragAir = value;
	}

	public double getSlopeAdjustment()
	{
		return 0.0078125D;
	}
	/* =================================== FORGE END ===========================================*/
}