StructureStart.java

package net.minecraft.world.gen.structure;

import java.util.Iterator;
import java.util.LinkedList;
import java.util.Random;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.world.World;

public abstract class StructureStart
{
    /** List of all StructureComponents that are part of this structure */
    protected LinkedList components = new LinkedList();
    protected StructureBoundingBox boundingBox;
    private int field_143024_c;
    private int field_143023_d;
    private static final String __OBFID = "CL_00000513";

    public StructureStart() {}

    public StructureStart(int p_i43002_1_, int p_i43002_2_)
    {
        this.field_143024_c = p_i43002_1_;
        this.field_143023_d = p_i43002_2_;
    }

    public StructureBoundingBox getBoundingBox()
    {
        return this.boundingBox;
    }

    public LinkedList getComponents()
    {
        return this.components;
    }

    /**
     * Keeps iterating Structure Pieces and spawning them until the checks tell it to stop
     */
    public void generateStructure(World p_75068_1_, Random p_75068_2_, StructureBoundingBox p_75068_3_)
    {
        Iterator iterator = this.components.iterator();

        while (iterator.hasNext())
        {
            StructureComponent structurecomponent = (StructureComponent)iterator.next();

            if (structurecomponent.getBoundingBox().intersectsWith(p_75068_3_) && !structurecomponent.addComponentParts(p_75068_1_, p_75068_2_, p_75068_3_))
            {
                iterator.remove();
            }
        }
    }

    /**
     * Calculates total bounding box based on components' bounding boxes and saves it to boundingBox
     */
    protected void updateBoundingBox()
    {
        this.boundingBox = StructureBoundingBox.getNewBoundingBox();
        Iterator iterator = this.components.iterator();

        while (iterator.hasNext())
        {
            StructureComponent structurecomponent = (StructureComponent)iterator.next();
            this.boundingBox.expandTo(structurecomponent.getBoundingBox());
        }
    }

    public NBTTagCompound func_143021_a(int p_143021_1_, int p_143021_2_)
    {
        if (MapGenStructureIO.func_143033_a(this) == null) // This is just a more friendly error instead of the 'Null String' below
        {
            throw new RuntimeException("StructureStart \"" + this.getClass().getName() + "\" missing ID Mapping, Modder see MapGenStructureIO");
        }
        NBTTagCompound nbttagcompound = new NBTTagCompound();
        nbttagcompound.setString("id", MapGenStructureIO.func_143033_a(this));
        nbttagcompound.setInteger("ChunkX", p_143021_1_);
        nbttagcompound.setInteger("ChunkZ", p_143021_2_);
        nbttagcompound.setTag("BB", this.boundingBox.func_151535_h());
        NBTTagList nbttaglist = new NBTTagList();
        Iterator iterator = this.components.iterator();

        while (iterator.hasNext())
        {
            StructureComponent structurecomponent = (StructureComponent)iterator.next();
            nbttaglist.appendTag(structurecomponent.func_143010_b());
        }

        nbttagcompound.setTag("Children", nbttaglist);
        this.func_143022_a(nbttagcompound);
        return nbttagcompound;
    }

    public void func_143022_a(NBTTagCompound p_143022_1_) {}

    public void func_143020_a(World p_143020_1_, NBTTagCompound p_143020_2_)
    {
        this.field_143024_c = p_143020_2_.getInteger("ChunkX");
        this.field_143023_d = p_143020_2_.getInteger("ChunkZ");

        if (p_143020_2_.hasKey("BB"))
        {
            this.boundingBox = new StructureBoundingBox(p_143020_2_.getIntArray("BB"));
        }

        NBTTagList nbttaglist = p_143020_2_.getTagList("Children", 10);

        for (int i = 0; i < nbttaglist.tagCount(); ++i)
        {
            StructureComponent tmp = MapGenStructureIO.func_143032_b(nbttaglist.getCompoundTagAt(i), p_143020_1_);
            if (tmp != null) this.components.add(tmp); //Forge: Prevent NPEs further down the line when a component can't be loaded.
        }

        this.func_143017_b(p_143020_2_);
    }

    public void func_143017_b(NBTTagCompound p_143017_1_) {}

    /**
     * offsets the structure Bounding Boxes up to a certain height, typically 63 - 10
     */
    protected void markAvailableHeight(World p_75067_1_, Random p_75067_2_, int p_75067_3_)
    {
        int j = 63 - p_75067_3_;
        int k = this.boundingBox.getYSize() + 1;

        if (k < j)
        {
            k += p_75067_2_.nextInt(j - k);
        }

        int l = k - this.boundingBox.maxY;
        this.boundingBox.offset(0, l, 0);
        Iterator iterator = this.components.iterator();

        while (iterator.hasNext())
        {
            StructureComponent structurecomponent = (StructureComponent)iterator.next();
            structurecomponent.getBoundingBox().offset(0, l, 0);
        }
    }

    protected void setRandomHeight(World p_75070_1_, Random p_75070_2_, int p_75070_3_, int p_75070_4_)
    {
        int k = p_75070_4_ - p_75070_3_ + 1 - this.boundingBox.getYSize();
        boolean flag = true;
        int i1;

        if (k > 1)
        {
            i1 = p_75070_3_ + p_75070_2_.nextInt(k);
        }
        else
        {
            i1 = p_75070_3_;
        }

        int l = i1 - this.boundingBox.minY;
        this.boundingBox.offset(0, l, 0);
        Iterator iterator = this.components.iterator();

        while (iterator.hasNext())
        {
            StructureComponent structurecomponent = (StructureComponent)iterator.next();
            structurecomponent.getBoundingBox().offset(0, l, 0);
        }
    }

    /**
     * currently only defined for Villages, returns true if Village has more than 2 non-road components
     */
    public boolean isSizeableStructure()
    {
        return true;
    }

    public int func_143019_e()
    {
        return this.field_143024_c;
    }

    public int func_143018_f()
    {
        return this.field_143023_d;
    }
}