WorldGenForest.java

package net.minecraft.world.gen.feature;

import java.util.Random;
import net.minecraft.block.Block;
import net.minecraft.block.BlockSapling;
import net.minecraft.block.material.Material;
import net.minecraft.init.Blocks;
import net.minecraft.world.World;
import net.minecraftforge.common.util.ForgeDirection;

public class WorldGenForest extends WorldGenAbstractTree
{
    private boolean field_150531_a;
    private static final String __OBFID = "CL_00000401";

    public WorldGenForest(boolean p_i45449_1_, boolean p_i45449_2_)
    {
        super(p_i45449_1_);
        this.field_150531_a = p_i45449_2_;
    }

    public boolean generate(World p_76484_1_, Random p_76484_2_, int p_76484_3_, int p_76484_4_, int p_76484_5_)
    {
        int l = p_76484_2_.nextInt(3) + 5;

        if (this.field_150531_a)
        {
            l += p_76484_2_.nextInt(7);
        }

        boolean flag = true;

        if (p_76484_4_ >= 1 && p_76484_4_ + l + 1 <= 256)
        {
            int j1;
            int k1;

            for (int i1 = p_76484_4_; i1 <= p_76484_4_ + 1 + l; ++i1)
            {
                byte b0 = 1;

                if (i1 == p_76484_4_)
                {
                    b0 = 0;
                }

                if (i1 >= p_76484_4_ + 1 + l - 2)
                {
                    b0 = 2;
                }

                for (j1 = p_76484_3_ - b0; j1 <= p_76484_3_ + b0 && flag; ++j1)
                {
                    for (k1 = p_76484_5_ - b0; k1 <= p_76484_5_ + b0 && flag; ++k1)
                    {
                        if (i1 >= 0 && i1 < 256)
                        {
                            Block block = p_76484_1_.getBlock(j1, i1, k1);

                            if (!this.isReplaceable(p_76484_1_, j1, i1, k1))
                            {
                                flag = false;
                            }
                        }
                        else
                        {
                            flag = false;
                        }
                    }
                }
            }

            if (!flag)
            {
                return false;
            }
            else
            {
                Block block2 = p_76484_1_.getBlock(p_76484_3_, p_76484_4_ - 1, p_76484_5_);

                boolean isSoil = block2.canSustainPlant(p_76484_1_, p_76484_3_, p_76484_4_ - 1, p_76484_5_, ForgeDirection.UP, (BlockSapling)Blocks.sapling);
                if (isSoil && p_76484_4_ < 256 - l - 1)
                {
                    block2.onPlantGrow(p_76484_1_, p_76484_3_, p_76484_4_ - 1, p_76484_5_, p_76484_3_, p_76484_4_, p_76484_5_);
                    int k2;

                    for (k2 = p_76484_4_ - 3 + l; k2 <= p_76484_4_ + l; ++k2)
                    {
                        j1 = k2 - (p_76484_4_ + l);
                        k1 = 1 - j1 / 2;

                        for (int l2 = p_76484_3_ - k1; l2 <= p_76484_3_ + k1; ++l2)
                        {
                            int l1 = l2 - p_76484_3_;

                            for (int i2 = p_76484_5_ - k1; i2 <= p_76484_5_ + k1; ++i2)
                            {
                                int j2 = i2 - p_76484_5_;

                                if (Math.abs(l1) != k1 || Math.abs(j2) != k1 || p_76484_2_.nextInt(2) != 0 && j1 != 0)
                                {
                                    Block block1 = p_76484_1_.getBlock(l2, k2, i2);

                                    if (block1.isAir(p_76484_1_, l2, k2, i2) || block1.isLeaves(p_76484_1_, l2, k2, i2))
                                    {
                                        this.setBlockAndNotifyAdequately(p_76484_1_, l2, k2, i2, Blocks.leaves, 2);
                                    }
                                }
                            }
                        }
                    }

                    for (k2 = 0; k2 < l; ++k2)
                    {
                        Block block3 = p_76484_1_.getBlock(p_76484_3_, p_76484_4_ + k2, p_76484_5_);

                        if (block3.isAir(p_76484_1_, p_76484_3_, p_76484_4_ + k2, p_76484_5_) || block3.isLeaves(p_76484_1_, p_76484_3_, p_76484_4_ + k2, p_76484_5_))
                        {
                            this.setBlockAndNotifyAdequately(p_76484_1_, p_76484_3_, p_76484_4_ + k2, p_76484_5_, Blocks.log, 2);
                        }
                    }

                    return true;
                }
                else
                {
                    return false;
                }
            }
        }
        else
        {
            return false;
        }
    }
}