EntityMinecartFurnace.java

package net.minecraft.entity.item;

import net.minecraft.block.Block;
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.util.DamageSource;
import net.minecraft.util.MathHelper;
import net.minecraft.world.World;

public class EntityMinecartFurnace extends EntityMinecart
{
    private int fuel;
    public double pushX;
    public double pushZ;
    private static final String __OBFID = "CL_00001675";

    public EntityMinecartFurnace(World p_i1718_1_)
    {
        super(p_i1718_1_);
    }

    public EntityMinecartFurnace(World p_i1719_1_, double p_i1719_2_, double p_i1719_4_, double p_i1719_6_)
    {
        super(p_i1719_1_, p_i1719_2_, p_i1719_4_, p_i1719_6_);
    }

    public int getMinecartType()
    {
        return 2;
    }

    protected void entityInit()
    {
        super.entityInit();
        this.dataWatcher.addObject(16, new Byte((byte)0));
    }

    /**
     * Called to update the entity's position/logic.
     */
    public void onUpdate()
    {
        super.onUpdate();

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

        if (this.fuel <= 0)
        {
            this.pushX = this.pushZ = 0.0D;
        }

        this.setMinecartPowered(this.fuel > 0);

        if (this.isMinecartPowered() && this.rand.nextInt(4) == 0)
        {
            this.worldObj.spawnParticle("largesmoke", this.posX, this.posY + 0.8D, this.posZ, 0.0D, 0.0D, 0.0D);
        }
    }

    public void killMinecart(DamageSource p_94095_1_)
    {
        super.killMinecart(p_94095_1_);

        if (!p_94095_1_.isExplosion())
        {
            this.entityDropItem(new ItemStack(Blocks.furnace, 1), 0.0F);
        }
    }

    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_)
    {
        super.func_145821_a(p_145821_1_, p_145821_2_, p_145821_3_, p_145821_4_, p_145821_6_, p_145821_8_, p_145821_9_);
        double d2 = this.pushX * this.pushX + this.pushZ * this.pushZ;

        if (d2 > 1.0E-4D && this.motionX * this.motionX + this.motionZ * this.motionZ > 0.001D)
        {
            d2 = (double)MathHelper.sqrt_double(d2);
            this.pushX /= d2;
            this.pushZ /= d2;

            if (this.pushX * this.motionX + this.pushZ * this.motionZ < 0.0D)
            {
                this.pushX = 0.0D;
                this.pushZ = 0.0D;
            }
            else
            {
                this.pushX = this.motionX;
                this.pushZ = this.motionZ;
            }
        }
    }

    protected void applyDrag()
    {
        double d0 = this.pushX * this.pushX + this.pushZ * this.pushZ;

        if (d0 > 1.0E-4D)
        {
            d0 = (double)MathHelper.sqrt_double(d0);
            this.pushX /= d0;
            this.pushZ /= d0;
            double d1 = 0.05D;
            this.motionX *= 0.800000011920929D;
            this.motionY *= 0.0D;
            this.motionZ *= 0.800000011920929D;
            this.motionX += this.pushX * d1;
            this.motionZ += this.pushZ * d1;
        }
        else
        {
            this.motionX *= 0.9800000190734863D;
            this.motionY *= 0.0D;
            this.motionZ *= 0.9800000190734863D;
        }

        super.applyDrag();
    }

    /**
     * First layer of player interaction
     */
    public boolean interactFirst(EntityPlayer player)
    {
        if(net.minecraftforge.common.MinecraftForge.EVENT_BUS.post(new net.minecraftforge.event.entity.minecart.MinecartInteractEvent(this, player))) return true;
        ItemStack itemstack = player.inventory.getCurrentItem();

        if (itemstack != null && itemstack.getItem() == Items.coal)
        {
            if (!player.capabilities.isCreativeMode && --itemstack.stackSize == 0)
            {
                player.inventory.setInventorySlotContents(player.inventory.currentItem, (ItemStack)null);
            }

            this.fuel += 3600;
        }

        this.pushX = this.posX - player.posX;
        this.pushZ = this.posZ - player.posZ;
        return true;
    }

    /**
     * (abstract) Protected helper method to write subclass entity data to NBT.
     */
    protected void writeEntityToNBT(NBTTagCompound tagCompound)
    {
        super.writeEntityToNBT(tagCompound);
        tagCompound.setDouble("PushX", this.pushX);
        tagCompound.setDouble("PushZ", this.pushZ);
        tagCompound.setShort("Fuel", (short)this.fuel);
    }

    /**
     * (abstract) Protected helper method to read subclass entity data from NBT.
     */
    protected void readEntityFromNBT(NBTTagCompound tagCompund)
    {
        super.readEntityFromNBT(tagCompund);
        this.pushX = tagCompund.getDouble("PushX");
        this.pushZ = tagCompund.getDouble("PushZ");
        this.fuel = tagCompund.getShort("Fuel");
    }

    protected boolean isMinecartPowered()
    {
        return (this.dataWatcher.getWatchableObjectByte(16) & 1) != 0;
    }

    protected void setMinecartPowered(boolean p_94107_1_)
    {
        if (p_94107_1_)
        {
            this.dataWatcher.updateObject(16, Byte.valueOf((byte)(this.dataWatcher.getWatchableObjectByte(16) | 1)));
        }
        else
        {
            this.dataWatcher.updateObject(16, Byte.valueOf((byte)(this.dataWatcher.getWatchableObjectByte(16) & -2)));
        }
    }

    public Block getDefaultDisplayTile()
    {
        return Blocks.lit_furnace;
    }

    public int getDefaultDisplayTileData()
    {
        return 2;
    }
}