001    package net.minecraft.src;
002    
003    import java.util.Random;
004    
005    public class WorldGenHugeTrees extends WorldGenerator
006    {
007        /** The base height of the tree */
008        private final int baseHeight;
009    
010        /** Sets the metadata for the wood blocks used */
011        private final int woodMetadata;
012    
013        /** Sets the metadata for the leaves used in huge trees */
014        private final int leavesMetadata;
015    
016        public WorldGenHugeTrees(boolean par1, int par2, int par3, int par4)
017        {
018            super(par1);
019            this.baseHeight = par2;
020            this.woodMetadata = par3;
021            this.leavesMetadata = par4;
022        }
023    
024        public boolean generate(World par1World, Random par2Random, int par3, int par4, int par5)
025        {
026            int var6 = par2Random.nextInt(3) + this.baseHeight;
027            boolean var7 = true;
028    
029            if (par4 >= 1 && par4 + var6 + 1 <= 256)
030            {
031                int var8;
032                int var10;
033                int var11;
034                int var12;
035    
036                for (var8 = par4; var8 <= par4 + 1 + var6; ++var8)
037                {
038                    byte var9 = 2;
039    
040                    if (var8 == par4)
041                    {
042                        var9 = 1;
043                    }
044    
045                    if (var8 >= par4 + 1 + var6 - 2)
046                    {
047                        var9 = 2;
048                    }
049    
050                    for (var10 = par3 - var9; var10 <= par3 + var9 && var7; ++var10)
051                    {
052                        for (var11 = par5 - var9; var11 <= par5 + var9 && var7; ++var11)
053                        {
054                            if (var8 >= 0 && var8 < 256)
055                            {
056                                var12 = par1World.getBlockId(var10, var8, var11);
057    
058                                if (var12 != 0 && 
059                                   (Block.blocksList[var12] != null && !Block.blocksList[var12].isLeaves(par1World, var10, var8, var11)) && 
060                                   var12 != Block.grass.blockID && 
061                                   var12 != Block.dirt.blockID && 
062                                   (Block.blocksList[var12] != null && !Block.blocksList[var12].isWood(par1World, var10, var8, var11)) &&
063                                   var12 != Block.sapling.blockID)
064                                {
065                                    var7 = false;
066                                }
067                            }
068                            else
069                            {
070                                var7 = false;
071                            }
072                        }
073                    }
074                }
075    
076                if (!var7)
077                {
078                    return false;
079                }
080                else
081                {
082                    var8 = par1World.getBlockId(par3, par4 - 1, par5);
083    
084                    if ((var8 == Block.grass.blockID || var8 == Block.dirt.blockID) && par4 < 256 - var6 - 1)
085                    {
086                        par1World.setBlock(par3, par4 - 1, par5, Block.dirt.blockID);
087                        par1World.setBlock(par3 + 1, par4 - 1, par5, Block.dirt.blockID);
088                        par1World.setBlock(par3, par4 - 1, par5 + 1, Block.dirt.blockID);
089                        par1World.setBlock(par3 + 1, par4 - 1, par5 + 1, Block.dirt.blockID);
090                        this.growLeaves(par1World, par3, par5, par4 + var6, 2, par2Random);
091    
092                        for (int var14 = par4 + var6 - 2 - par2Random.nextInt(4); var14 > par4 + var6 / 2; var14 -= 2 + par2Random.nextInt(4))
093                        {
094                            float var15 = par2Random.nextFloat() * (float)Math.PI * 2.0F;
095                            var11 = par3 + (int)(0.5F + MathHelper.cos(var15) * 4.0F);
096                            var12 = par5 + (int)(0.5F + MathHelper.sin(var15) * 4.0F);
097                            this.growLeaves(par1World, var11, var12, var14, 0, par2Random);
098    
099                            for (int var13 = 0; var13 < 5; ++var13)
100                            {
101                                var11 = par3 + (int)(1.5F + MathHelper.cos(var15) * (float)var13);
102                                var12 = par5 + (int)(1.5F + MathHelper.sin(var15) * (float)var13);
103                                this.setBlockAndMetadata(par1World, var11, var14 - 3 + var13 / 2, var12, Block.wood.blockID, this.woodMetadata);
104                            }
105                        }
106    
107                        for (var10 = 0; var10 < var6; ++var10)
108                        {
109                            var11 = par1World.getBlockId(par3, par4 + var10, par5);
110    
111                            if (var11 == 0 || Block.blocksList[var11] == null || Block.blocksList[var11].isLeaves(par1World, par3, par4 + var10, par5))
112                            {
113                                this.setBlockAndMetadata(par1World, par3, par4 + var10, par5, Block.wood.blockID, this.woodMetadata);
114    
115                                if (var10 > 0)
116                                {
117                                    if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3 - 1, par4 + var10, par5))
118                                    {
119                                        this.setBlockAndMetadata(par1World, par3 - 1, par4 + var10, par5, Block.vine.blockID, 8);
120                                    }
121    
122                                    if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3, par4 + var10, par5 - 1))
123                                    {
124                                        this.setBlockAndMetadata(par1World, par3, par4 + var10, par5 - 1, Block.vine.blockID, 1);
125                                    }
126                                }
127                            }
128    
129                            if (var10 < var6 - 1)
130                            {
131                                var11 = par1World.getBlockId(par3 + 1, par4 + var10, par5);
132    
133                                if (var11 == 0 || Block.blocksList[var11] == null || Block.blocksList[var11].isLeaves(par1World, par3 + 1, par4 + var10, par5))
134                                {
135                                    this.setBlockAndMetadata(par1World, par3 + 1, par4 + var10, par5, Block.wood.blockID, this.woodMetadata);
136    
137                                    if (var10 > 0)
138                                    {
139                                        if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3 + 2, par4 + var10, par5))
140                                        {
141                                            this.setBlockAndMetadata(par1World, par3 + 2, par4 + var10, par5, Block.vine.blockID, 2);
142                                        }
143    
144                                        if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3 + 1, par4 + var10, par5 - 1))
145                                        {
146                                            this.setBlockAndMetadata(par1World, par3 + 1, par4 + var10, par5 - 1, Block.vine.blockID, 1);
147                                        }
148                                    }
149                                }
150    
151                                var11 = par1World.getBlockId(par3 + 1, par4 + var10, par5 + 1);
152    
153                                if (var11 == 0 || Block.blocksList[var11] == null || Block.blocksList[var11].isLeaves(par1World, par3 + 1, par4 + var10, par5 + 1))
154                                {
155                                    this.setBlockAndMetadata(par1World, par3 + 1, par4 + var10, par5 + 1, Block.wood.blockID, this.woodMetadata);
156    
157                                    if (var10 > 0)
158                                    {
159                                        if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3 + 2, par4 + var10, par5 + 1))
160                                        {
161                                            this.setBlockAndMetadata(par1World, par3 + 2, par4 + var10, par5 + 1, Block.vine.blockID, 2);
162                                        }
163    
164                                        if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3 + 1, par4 + var10, par5 + 2))
165                                        {
166                                            this.setBlockAndMetadata(par1World, par3 + 1, par4 + var10, par5 + 2, Block.vine.blockID, 4);
167                                        }
168                                    }
169                                }
170    
171                                var11 = par1World.getBlockId(par3, par4 + var10, par5 + 1);
172    
173                                if (var11 == 0 || Block.blocksList[var11] == null || Block.blocksList[var11].isLeaves(par1World, par3, par4 + var10, par5 + 1))
174                                {
175                                    this.setBlockAndMetadata(par1World, par3, par4 + var10, par5 + 1, Block.wood.blockID, this.woodMetadata);
176    
177                                    if (var10 > 0)
178                                    {
179                                        if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3 - 1, par4 + var10, par5 + 1))
180                                        {
181                                            this.setBlockAndMetadata(par1World, par3 - 1, par4 + var10, par5 + 1, Block.vine.blockID, 8);
182                                        }
183    
184                                        if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3, par4 + var10, par5 + 2))
185                                        {
186                                            this.setBlockAndMetadata(par1World, par3, par4 + var10, par5 + 2, Block.vine.blockID, 4);
187                                        }
188                                    }
189                                }
190                            }
191                        }
192    
193                        return true;
194                    }
195                    else
196                    {
197                        return false;
198                    }
199                }
200            }
201            else
202            {
203                return false;
204            }
205        }
206    
207        private void growLeaves(World par1World, int par2, int par3, int par4, int par5, Random par6Random)
208        {
209            byte var7 = 2;
210    
211            for (int var8 = par4 - var7; var8 <= par4; ++var8)
212            {
213                int var9 = var8 - par4;
214                int var10 = par5 + 1 - var9;
215    
216                for (int var11 = par2 - var10; var11 <= par2 + var10 + 1; ++var11)
217                {
218                    int var12 = var11 - par2;
219    
220                    for (int var13 = par3 - var10; var13 <= par3 + var10 + 1; ++var13)
221                    {
222                        int var14 = var13 - par3;
223    
224                        Block block = Block.blocksList[par1World.getBlockId(var11, var8, var13)];
225    
226                        if ((var12 >= 0 || var14 >= 0 || var12 * var12 + var14 * var14 <= var10 * var10) && 
227                            (var12 <= 0 && var14 <= 0 || var12 * var12 + var14 * var14 <= (var10 + 1) * (var10 + 1)) && 
228                            (par6Random.nextInt(4) != 0 || var12 * var12 + var14 * var14 <= (var10 - 1) * (var10 - 1)) && 
229                            (block == null || block.canBeReplacedByLeaves(par1World, var11, var8, var13)))
230                        {
231                            this.setBlockAndMetadata(par1World, var11, var8, var13, Block.leaves.blockID, this.leavesMetadata);
232                        }
233                    }
234                }
235            }
236        }
237    }