001    package net.minecraft.src;
002    
003    import java.util.ArrayList;
004    import java.util.Collections;
005    import java.util.Iterator;
006    import java.util.List;
007    import java.util.Map;
008    import java.util.Random;
009    import java.util.Map.Entry;
010    
011    public class MapGenStronghold extends MapGenStructure
012    {
013        private BiomeGenBase[] allowedBiomeGenBases;
014    
015        /**
016         * is spawned false and set true once the defined BiomeGenBases were compared with the present ones
017         */
018        private boolean ranBiomeCheck;
019        private ChunkCoordIntPair[] structureCoords;
020        private double field_82671_h;
021        private int field_82672_i;
022    
023        public MapGenStronghold()
024        {
025            this.allowedBiomeGenBases = new BiomeGenBase[] {BiomeGenBase.desert, BiomeGenBase.forest, BiomeGenBase.extremeHills, BiomeGenBase.swampland, BiomeGenBase.taiga, BiomeGenBase.icePlains, BiomeGenBase.iceMountains, BiomeGenBase.desertHills, BiomeGenBase.forestHills, BiomeGenBase.extremeHillsEdge, BiomeGenBase.jungle, BiomeGenBase.jungleHills};
026            this.structureCoords = new ChunkCoordIntPair[3];
027            this.field_82671_h = 32.0D;
028            this.field_82672_i = 3;
029        }
030    
031        public MapGenStronghold(Map par1Map)
032        {
033            this.allowedBiomeGenBases = new BiomeGenBase[] {BiomeGenBase.desert, BiomeGenBase.forest, BiomeGenBase.extremeHills, BiomeGenBase.swampland, BiomeGenBase.taiga, BiomeGenBase.icePlains, BiomeGenBase.iceMountains, BiomeGenBase.desertHills, BiomeGenBase.forestHills, BiomeGenBase.extremeHillsEdge, BiomeGenBase.jungle, BiomeGenBase.jungleHills};
034            this.structureCoords = new ChunkCoordIntPair[3];
035            this.field_82671_h = 32.0D;
036            this.field_82672_i = 3;
037            Iterator var2 = par1Map.entrySet().iterator();
038    
039            while (var2.hasNext())
040            {
041                Entry var3 = (Entry)var2.next();
042    
043                if (((String)var3.getKey()).equals("distance"))
044                {
045                    this.field_82671_h = MathHelper.func_82713_a((String)var3.getValue(), this.field_82671_h, 1.0D);
046                }
047                else if (((String)var3.getKey()).equals("count"))
048                {
049                    this.structureCoords = new ChunkCoordIntPair[MathHelper.func_82714_a((String)var3.getValue(), this.structureCoords.length, 1)];
050                }
051                else if (((String)var3.getKey()).equals("spread"))
052                {
053                    this.field_82672_i = MathHelper.func_82714_a((String)var3.getValue(), this.field_82672_i, 1);
054                }
055            }
056        }
057    
058        protected boolean canSpawnStructureAtCoords(int par1, int par2)
059        {
060            if (!this.ranBiomeCheck)
061            {
062                Random var3 = new Random();
063                var3.setSeed(this.worldObj.getSeed());
064                double var4 = var3.nextDouble() * Math.PI * 2.0D;
065                int var6 = 1;
066    
067                for (int var7 = 0; var7 < this.structureCoords.length; ++var7)
068                {
069                    double var8 = (1.25D * (double)var6 + var3.nextDouble()) * this.field_82671_h * (double)var6;
070                    int var10 = (int)Math.round(Math.cos(var4) * var8);
071                    int var11 = (int)Math.round(Math.sin(var4) * var8);
072                    ArrayList var12 = new ArrayList();
073                    Collections.addAll(var12, this.allowedBiomeGenBases);
074                    ChunkPosition var13 = this.worldObj.getWorldChunkManager().findBiomePosition((var10 << 4) + 8, (var11 << 4) + 8, 112, var12, var3);
075    
076                    if (var13 != null)
077                    {
078                        var10 = var13.x >> 4;
079                        var11 = var13.z >> 4;
080                    }
081    
082                    this.structureCoords[var7] = new ChunkCoordIntPair(var10, var11);
083                    var4 += (Math.PI * 2D) * (double)var6 / (double)this.field_82672_i;
084    
085                    if (var7 == this.field_82672_i)
086                    {
087                        var6 += 2 + var3.nextInt(5);
088                        this.field_82672_i += 1 + var3.nextInt(2);
089                    }
090                }
091    
092                this.ranBiomeCheck = true;
093            }
094    
095            ChunkCoordIntPair[] var14 = this.structureCoords;
096            int var15 = var14.length;
097    
098            for (int var5 = 0; var5 < var15; ++var5)
099            {
100                ChunkCoordIntPair var16 = var14[var5];
101    
102                if (par1 == var16.chunkXPos && par2 == var16.chunkZPos)
103                {
104                    return true;
105                }
106            }
107    
108            return false;
109        }
110    
111        /**
112         * Returns a list of other locations at which the structure generation has been run, or null if not relevant to this
113         * structure generator.
114         */
115        protected List getCoordList()
116        {
117            ArrayList var1 = new ArrayList();
118            ChunkCoordIntPair[] var2 = this.structureCoords;
119            int var3 = var2.length;
120    
121            for (int var4 = 0; var4 < var3; ++var4)
122            {
123                ChunkCoordIntPair var5 = var2[var4];
124    
125                if (var5 != null)
126                {
127                    var1.add(var5.getChunkPosition(64));
128                }
129            }
130    
131            return var1;
132        }
133    
134        protected StructureStart getStructureStart(int par1, int par2)
135        {
136            StructureStrongholdStart var3;
137    
138            for (var3 = new StructureStrongholdStart(this.worldObj, this.rand, par1, par2); var3.getComponents().isEmpty() || ((ComponentStrongholdStairs2)var3.getComponents().get(0)).portalRoom == null; var3 = new StructureStrongholdStart(this.worldObj, this.rand, par1, par2))
139            {
140                ;
141            }
142    
143            return var3;
144        }
145    }