001package net.minecraft.world.gen.structure;
002
003import java.util.ArrayList;
004import java.util.Arrays;
005import java.util.Collections;
006import java.util.Iterator;
007import java.util.List;
008import java.util.Map;
009import java.util.Random;
010import java.util.Map.Entry;
011import net.minecraft.util.MathHelper;
012import net.minecraft.world.ChunkCoordIntPair;
013import net.minecraft.world.ChunkPosition;
014import net.minecraft.world.biome.BiomeGenBase;
015
016public class MapGenStronghold extends MapGenStructure
017{
018    public static ArrayList<BiomeGenBase> allowedBiomes = new ArrayList<BiomeGenBase>(Arrays.asList(BiomeGenBase.desert, BiomeGenBase.forest, BiomeGenBase.extremeHills, BiomeGenBase.swampland, BiomeGenBase.taiga, BiomeGenBase.icePlains, BiomeGenBase.iceMountains, BiomeGenBase.desertHills, BiomeGenBase.forestHills, BiomeGenBase.extremeHillsEdge, BiomeGenBase.jungle, BiomeGenBase.jungleHills)); 
019    private BiomeGenBase[] allowedBiomeGenBases;
020
021    /**
022     * is spawned false and set true once the defined BiomeGenBases were compared with the present ones
023     */
024    private boolean ranBiomeCheck;
025    private ChunkCoordIntPair[] structureCoords;
026    private double field_82671_h;
027    private int field_82672_i;
028
029    public MapGenStronghold()
030    {
031        this.allowedBiomeGenBases = allowedBiomes.toArray(new BiomeGenBase[0]);
032        this.structureCoords = new ChunkCoordIntPair[3];
033        this.field_82671_h = 32.0D;
034        this.field_82672_i = 3;
035    }
036
037    public MapGenStronghold(Map par1Map)
038    {
039        this.allowedBiomeGenBases = allowedBiomes.toArray(new BiomeGenBase[0]);
040        this.structureCoords = new ChunkCoordIntPair[3];
041        this.field_82671_h = 32.0D;
042        this.field_82672_i = 3;
043        Iterator var2 = par1Map.entrySet().iterator();
044
045        while (var2.hasNext())
046        {
047            Entry var3 = (Entry)var2.next();
048
049            if (((String)var3.getKey()).equals("distance"))
050            {
051                this.field_82671_h = MathHelper.func_82713_a((String)var3.getValue(), this.field_82671_h, 1.0D);
052            }
053            else if (((String)var3.getKey()).equals("count"))
054            {
055                this.structureCoords = new ChunkCoordIntPair[MathHelper.parseIntWithDefaultAndMax((String)var3.getValue(), this.structureCoords.length, 1)];
056            }
057            else if (((String)var3.getKey()).equals("spread"))
058            {
059                this.field_82672_i = MathHelper.parseIntWithDefaultAndMax((String)var3.getValue(), this.field_82672_i, 1);
060            }
061        }
062    }
063
064    protected boolean canSpawnStructureAtCoords(int par1, int par2)
065    {
066        if (!this.ranBiomeCheck)
067        {
068            Random var3 = new Random();
069            var3.setSeed(this.worldObj.getSeed());
070            double var4 = var3.nextDouble() * Math.PI * 2.0D;
071            int var6 = 1;
072
073            for (int var7 = 0; var7 < this.structureCoords.length; ++var7)
074            {
075                double var8 = (1.25D * (double)var6 + var3.nextDouble()) * this.field_82671_h * (double)var6;
076                int var10 = (int)Math.round(Math.cos(var4) * var8);
077                int var11 = (int)Math.round(Math.sin(var4) * var8);
078                ArrayList var12 = new ArrayList();
079                Collections.addAll(var12, this.allowedBiomeGenBases);
080                ChunkPosition var13 = this.worldObj.getWorldChunkManager().findBiomePosition((var10 << 4) + 8, (var11 << 4) + 8, 112, var12, var3);
081
082                if (var13 != null)
083                {
084                    var10 = var13.x >> 4;
085                    var11 = var13.z >> 4;
086                }
087
088                this.structureCoords[var7] = new ChunkCoordIntPair(var10, var11);
089                var4 += (Math.PI * 2D) * (double)var6 / (double)this.field_82672_i;
090
091                if (var7 == this.field_82672_i)
092                {
093                    var6 += 2 + var3.nextInt(5);
094                    this.field_82672_i += 1 + var3.nextInt(2);
095                }
096            }
097
098            this.ranBiomeCheck = true;
099        }
100
101        ChunkCoordIntPair[] var14 = this.structureCoords;
102        int var15 = var14.length;
103
104        for (int var5 = 0; var5 < var15; ++var5)
105        {
106            ChunkCoordIntPair var16 = var14[var5];
107
108            if (par1 == var16.chunkXPos && par2 == var16.chunkZPos)
109            {
110                return true;
111            }
112        }
113
114        return false;
115    }
116
117    /**
118     * Returns a list of other locations at which the structure generation has been run, or null if not relevant to this
119     * structure generator.
120     */
121    protected List getCoordList()
122    {
123        ArrayList var1 = new ArrayList();
124        ChunkCoordIntPair[] var2 = this.structureCoords;
125        int var3 = var2.length;
126
127        for (int var4 = 0; var4 < var3; ++var4)
128        {
129            ChunkCoordIntPair var5 = var2[var4];
130
131            if (var5 != null)
132            {
133                var1.add(var5.getChunkPosition(64));
134            }
135        }
136
137        return var1;
138    }
139
140    protected StructureStart getStructureStart(int par1, int par2)
141    {
142        StructureStrongholdStart var3;
143
144        for (var3 = new StructureStrongholdStart(this.worldObj, this.rand, par1, par2); var3.getComponents().isEmpty() || ((ComponentStrongholdStairs2)var3.getComponents().get(0)).strongholdPortalRoom == null; var3 = new StructureStrongholdStart(this.worldObj, this.rand, par1, par2))
145        {
146            ;
147        }
148
149        return var3;
150    }
151}