001package net.minecraft.world.gen.feature;
002
003import java.util.Random;
004import net.minecraft.block.Block;
005import net.minecraft.block.BlockSapling;
006import net.minecraft.util.Direction;
007import net.minecraft.world.World;
008import net.minecraftforge.common.ForgeDirection;
009
010public class WorldGenTrees extends WorldGenerator
011{
012    /** The minimum height of a generated tree. */
013    private final int minTreeHeight;
014
015    /** True if this tree should grow Vines. */
016    private final boolean vinesGrow;
017
018    /** The metadata value of the wood to use in tree generation. */
019    private final int metaWood;
020
021    /** The metadata value of the leaves to use in tree generation. */
022    private final int metaLeaves;
023
024    public WorldGenTrees(boolean par1)
025    {
026        this(par1, 4, 0, 0, false);
027    }
028
029    public WorldGenTrees(boolean par1, int par2, int par3, int par4, boolean par5)
030    {
031        super(par1);
032        this.minTreeHeight = par2;
033        this.metaWood = par3;
034        this.metaLeaves = par4;
035        this.vinesGrow = par5;
036    }
037
038    public boolean generate(World par1World, Random par2Random, int par3, int par4, int par5)
039    {
040        int var6 = par2Random.nextInt(3) + this.minTreeHeight;
041        boolean var7 = true;
042
043        if (par4 >= 1 && par4 + var6 + 1 <= 256)
044        {
045            int var8;
046            byte var9;
047            int var11;
048            int var12;
049
050            for (var8 = par4; var8 <= par4 + 1 + var6; ++var8)
051            {
052                var9 = 1;
053
054                if (var8 == par4)
055                {
056                    var9 = 0;
057                }
058
059                if (var8 >= par4 + 1 + var6 - 2)
060                {
061                    var9 = 2;
062                }
063
064                for (int var10 = par3 - var9; var10 <= par3 + var9 && var7; ++var10)
065                {
066                    for (var11 = par5 - var9; var11 <= par5 + var9 && var7; ++var11)
067                    {
068                        if (var8 >= 0 && var8 < 256)
069                        {
070                            var12 = par1World.getBlockId(var10, var8, var11);
071
072                            Block block = Block.blocksList[var12];
073
074                            if (block != null &&
075                               !block.isLeaves(par1World, var10, var8, var11) &&
076                               !block.canSustainPlant(par1World, var10, var8, var11, ForgeDirection.UP, (BlockSapling)Block.sapling) &&
077                               !block.isWood(par1World, var10, var8, var11))
078                            {
079                                var7 = false;
080                            }
081                        }
082                        else
083                        {
084                            var7 = false;
085                        }
086                    }
087                }
088            }
089
090            if (!var7)
091            {
092                return false;
093            }
094            else
095            {
096                var8 = par1World.getBlockId(par3, par4 - 1, par5);
097                Block soil = Block.blocksList[var8];
098                boolean isSoil = (soil != null && soil.canSustainPlant(par1World, par3, par4 - 1, par5, ForgeDirection.UP, (BlockSapling)Block.sapling));
099
100                if (isSoil && par4 < 256 - var6 - 1)
101                {
102                    soil.onPlantGrow(par1World, par3, par4 - 1, par5, par3, par4, par5);
103                    var9 = 3;
104                    byte var18 = 0;
105                    int var13;
106                    int var14;
107                    int var15;
108
109                    for (var11 = par4 - var9 + var6; var11 <= par4 + var6; ++var11)
110                    {
111                        var12 = var11 - (par4 + var6);
112                        var13 = var18 + 1 - var12 / 2;
113
114                        for (var14 = par3 - var13; var14 <= par3 + var13; ++var14)
115                        {
116                            var15 = var14 - par3;
117
118                            for (int var16 = par5 - var13; var16 <= par5 + var13; ++var16)
119                            {
120                                int var17 = var16 - par5;
121
122                                Block block = Block.blocksList[par1World.getBlockId(var14, var11, var16)];
123
124                                if ((Math.abs(var15) != var13 || Math.abs(var17) != var13 || par2Random.nextInt(2) != 0 && var12 != 0) &&
125                                    (block == null || block.canBeReplacedByLeaves(par1World, var14, var11, var16)))
126                                {
127                                    this.setBlockAndMetadata(par1World, var14, var11, var16, Block.leaves.blockID, this.metaLeaves);
128                                }
129                            }
130                        }
131                    }
132
133                    for (var11 = 0; var11 < var6; ++var11)
134                    {
135                        var12 = par1World.getBlockId(par3, par4 + var11, par5);
136
137                        Block block = Block.blocksList[var12];
138
139                        if (var12 == 0 || block == null || block.isLeaves(par1World, par3, par4 + var11, par5))
140                        {
141                            this.setBlockAndMetadata(par1World, par3, par4 + var11, par5, Block.wood.blockID, this.metaWood);
142
143                            if (this.vinesGrow && var11 > 0)
144                            {
145                                if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3 - 1, par4 + var11, par5))
146                                {
147                                    this.setBlockAndMetadata(par1World, par3 - 1, par4 + var11, par5, Block.vine.blockID, 8);
148                                }
149
150                                if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3 + 1, par4 + var11, par5))
151                                {
152                                    this.setBlockAndMetadata(par1World, par3 + 1, par4 + var11, par5, Block.vine.blockID, 2);
153                                }
154
155                                if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3, par4 + var11, par5 - 1))
156                                {
157                                    this.setBlockAndMetadata(par1World, par3, par4 + var11, par5 - 1, Block.vine.blockID, 1);
158                                }
159
160                                if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3, par4 + var11, par5 + 1))
161                                {
162                                    this.setBlockAndMetadata(par1World, par3, par4 + var11, par5 + 1, Block.vine.blockID, 4);
163                                }
164                            }
165                        }
166                    }
167
168                    if (this.vinesGrow)
169                    {
170                        for (var11 = par4 - 3 + var6; var11 <= par4 + var6; ++var11)
171                        {
172                            var12 = var11 - (par4 + var6);
173                            var13 = 2 - var12 / 2;
174
175                            for (var14 = par3 - var13; var14 <= par3 + var13; ++var14)
176                            {
177                                for (var15 = par5 - var13; var15 <= par5 + var13; ++var15)
178                                {
179                                    Block block = Block.blocksList[par1World.getBlockId(var14, var11, var15)];
180                                    if (block != null && block.isLeaves(par1World, var14, var11, var15))
181                                    {
182                                        if (par2Random.nextInt(4) == 0 && par1World.getBlockId(var14 - 1, var11, var15) == 0)
183                                        {
184                                            this.growVines(par1World, var14 - 1, var11, var15, 8);
185                                        }
186
187                                        if (par2Random.nextInt(4) == 0 && par1World.getBlockId(var14 + 1, var11, var15) == 0)
188                                        {
189                                            this.growVines(par1World, var14 + 1, var11, var15, 2);
190                                        }
191
192                                        if (par2Random.nextInt(4) == 0 && par1World.getBlockId(var14, var11, var15 - 1) == 0)
193                                        {
194                                            this.growVines(par1World, var14, var11, var15 - 1, 1);
195                                        }
196
197                                        if (par2Random.nextInt(4) == 0 && par1World.getBlockId(var14, var11, var15 + 1) == 0)
198                                        {
199                                            this.growVines(par1World, var14, var11, var15 + 1, 4);
200                                        }
201                                    }
202                                }
203                            }
204                        }
205
206                        if (par2Random.nextInt(5) == 0 && var6 > 5)
207                        {
208                            for (var11 = 0; var11 < 2; ++var11)
209                            {
210                                for (var12 = 0; var12 < 4; ++var12)
211                                {
212                                    if (par2Random.nextInt(4 - var11) == 0)
213                                    {
214                                        var13 = par2Random.nextInt(3);
215                                        this.setBlockAndMetadata(par1World, par3 + Direction.offsetX[Direction.footInvisibleFaceRemap[var12]], par4 + var6 - 5 + var11, par5 + Direction.offsetZ[Direction.footInvisibleFaceRemap[var12]], Block.cocoaPlant.blockID, var13 << 2 | var12);
216                                    }
217                                }
218                            }
219                        }
220                    }
221
222                    return true;
223                }
224                else
225                {
226                    return false;
227                }
228            }
229        }
230        else
231        {
232            return false;
233        }
234    }
235
236    /**
237     * Grows vines downward from the given block for a given length. Args: World, x, starty, z, vine-length
238     */
239    private void growVines(World par1World, int par2, int par3, int par4, int par5)
240    {
241        this.setBlockAndMetadata(par1World, par2, par3, par4, Block.vine.blockID, par5);
242        int var6 = 4;
243
244        while (true)
245        {
246            --par3;
247
248            if (par1World.getBlockId(par2, par3, par4) != 0 || var6 <= 0)
249            {
250                return;
251            }
252
253            this.setBlockAndMetadata(par1World, par2, par3, par4, Block.vine.blockID, par5);
254            --var6;
255        }
256    }
257}