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Adding custom trees to custom biome


TheBasedRebel
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I have a custom biome already implemented and generating in the world randomly. However it is currently just a plain biome and i'm looking to add my custom tree to spawn in this biome Only. I also noticed that despite having the decorator statements as shown below i do not believe that they have any effect on the biome.

 

 

 

        this.theBiomeDecorator.flowersPerChunk = -999;
        this.theBiomeDecorator.deadBushPerChunk = 2;
        this.theBiomeDecorator.mushroomsPerChunk = 8;
        this.theBiomeDecorator.reedsPerChunk = 10;
        this.theBiomeDecorator.clayPerChunk = 5;
        this.theBiomeDecorator.waterlilyPerChunk = 4;
        this.waterColorMultiplier = 14745518;

 

 

 

Here is the BiomeGen code for my biome (includes the statements I posted above):

 

 

package infection.mod;

import java.util.ArrayList;
import java.util.Random;

import net.minecraft.block.Block;
import net.minecraft.world.World;
import net.minecraft.world.biome.BiomeGenBase;
import net.minecraft.world.biome.SpawnListEntry;
import net.minecraft.world.gen.feature.WorldGenBigTree;
import net.minecraft.world.gen.feature.WorldGenForest;
import net.minecraft.world.gen.feature.WorldGenSwamp;
import net.minecraft.world.gen.feature.WorldGenTrees;
import net.minecraft.world.gen.feature.WorldGenerator;

public class BiomeGenLagoon extends BiomeGenBase
{
    public BiomeGenLagoon(int par1)
    {
        super(par1);
        this.topBlock = (byte)mod_MainClass.LGrass.blockID;
        this.fillerBlock = (byte)mod_MainClass.LagoonDirt.blockID;
        this.theBiomeDecorator.flowersPerChunk = -999;
        this.theBiomeDecorator.deadBushPerChunk = 2;
        this.theBiomeDecorator.mushroomsPerChunk = 8;
        this.theBiomeDecorator.reedsPerChunk = 10;
        this.theBiomeDecorator.clayPerChunk = 5;
        this.theBiomeDecorator.waterlilyPerChunk = 4;
        this.waterColorMultiplier = 14745518;
    }
    

    public void decorate(World par1World, Random par2Random, int par3, int par4)
    {
        super.decorate(par1World, par2Random, par3, par4);
    }
    

  
    }

 

 

 

And then this is the WorldGenerator class for the Tree:

 

 

 

package infection.mod;

import java.util.Random;

import net.minecraft.world.World;
import net.minecraft.world.biome.BiomeGenBase;
import net.minecraft.world.chunk.IChunkProvider;
import net.minecraft.world.gen.feature.WorldGenMinable;
import cpw.mods.fml.common.IWorldGenerator;

public class WorldGeneratorLagoon implements IWorldGenerator{
    
@Override
public void generate(Random random, int chunkX, int chunkZ, World world,IChunkProvider chunkGenerator, IChunkProvider chunkProvider){
        
	switch(world.provider.dimensionId){
            case 1:
                generateNether(world, random, chunkX * 16, chunkZ * 16);
            case 0:
                generateSurface(world, random, chunkX * 16, chunkZ * 16);
            case -1:
                generateEnd(world, random, chunkX * 16, chunkZ * 16);
	}

}
    
private void generateEnd(World world, Random random, int chunkX, int chunkZ){

}
    
private void generateSurface(World world, Random random, int BlockX, int BlockZ) {

	for(int i = 0; i < 20; i++){
		int Xcoord1 = BlockX + random.nextInt(16);
		int Ycoord1 = random.nextInt(90);
		int Zcoord1 = BlockZ + random.nextInt(16);

		(new WorldGenLagoonTree(false, 15, 0, 0)).generate(world, random, Xcoord1, Ycoord1, Zcoord1);
	}	
		}
    
private void generateNether(World world, Random random, int chunkX, int chunkZ){

}


    
}

 

 

 

I'm trying to add that tree to that biome.

 

This is the WorldGen for the tree as well, however I do not think this is needed:

 

 

package infection.mod;

import java.util.Random;

import net.minecraft.block.Block;
import net.minecraft.block.BlockSapling;
import net.minecraft.util.MathHelper;
import net.minecraft.world.World;
import net.minecraft.world.gen.feature.WorldGenerator;
import net.minecraftforge.common.ForgeDirection;

public class WorldGenLagoonTree extends WorldGenerator
{
    /** The base height of the tree */
    private final int baseHeight;

    /** Sets the metadata for the wood blocks used */
    private final int woodMetadata;

    /** Sets the metadata for the leaves used in huge trees */
    private final int leavesMetadata;

    public WorldGenLagoonTree(boolean par1, int par2, int par3, int par4)
    {
        super(par1);
        this.baseHeight = par2;
        this.woodMetadata = par3;
        this.leavesMetadata = par4;
    }

    public boolean generate(World par1World, Random par2Random, int par3, int par4, int par5)
    {
        int var6 = par2Random.nextInt(3) + this.baseHeight;
        boolean var7 = true;

        if (par4 >= 1 && par4 + var6 + 1 <= 256)
        {
            int var8;
            int var10;
            int var11;
            int var12;

            for (var8 = par4; var8 <= par4 + 1 + var6; ++var8)
            {
                byte var9 = 2;

                if (var8 == par4)
                {
                    var9 = 1;
                }

                if (var8 >= par4 + 1 + var6 - 2)
                {
                    var9 = 2;
                }

                for (var10 = par3 - var9; var10 <= par3 + var9 && var7; ++var10)
                {
                    for (var11 = par5 - var9; var11 <= par5 + var9 && var7; ++var11)
                    {
                        if (var8 >= 0 && var8 < 256)
                        {
                            var12 = par1World.getBlockId(var10, var8, var11);
                            Block block = Block.blocksList[var12];

                            if (block != null &&
                               !block.isLeaves(par1World, var10, var8, var11) &&
                               !block.canSustainPlant(par1World, var10, var8, var11, ForgeDirection.UP, (LagoonSapling)mod_MainClass.LagoonSapling) && 
                               !block.isWood(par1World, var10, var8, var11) &&
                               var12 != mod_MainClass.LagoonSapling.blockID)
                            {
                                var7 = false;
                            }
                        }
                        else
                        {
                            var7 = false;
                        }
                    }
                }
            }

            if (!var7)
            {
                return false;
            }
            else
            {
                var8 = par1World.getBlockId(par3, par4 - 1, par5);
                Block soil = Block.blocksList[var8];
                boolean isValidSoil = soil != null && soil.canSustainPlant(par1World, par3, par4 - 1, par5, ForgeDirection.UP, (LagoonSapling)mod_MainClass.LagoonSapling);

                if (isValidSoil && par4 < 256 - var6 - 1)
                {
                    onPlantGrow(par1World, par3,     par4 - 1, par5,     par3, par4, par5);
                    onPlantGrow(par1World, par3 + 1, par4 - 1, par5,     par3, par4, par5);
                    onPlantGrow(par1World, par3,     par4 - 1, par5 + 1, par3, par4, par5);
                    onPlantGrow(par1World, par3 + 1, par4 - 1, par5 + 1, par3, par4, par5);
                    this.growLeaves(par1World, par3, par5, par4 + var6, 2, par2Random);

                    for (int var14 = par4 + var6 - 2 - par2Random.nextInt(4); var14 > par4 + var6 / 2; var14 -= 2 + par2Random.nextInt(4))
                    {
                        float var15 = par2Random.nextFloat() * (float)Math.PI * 2.0F;
                        var11 = par3 + (int)(0.5F + MathHelper.cos(var15) * 4.0F);
                        var12 = par5 + (int)(0.5F + MathHelper.sin(var15) * 4.0F);
                        this.growLeaves(par1World, var11, var12, var14, 0, par2Random);

                        for (int var13 = 0; var13 < 5; ++var13)
                        {
                            var11 = par3 + (int)(1.5F + MathHelper.cos(var15) * (float)var13);
                            var12 = par5 + (int)(1.5F + MathHelper.sin(var15) * (float)var13);
                            this.setBlockAndMetadata(par1World, var11, var14 - 3 + var13 / 2, var12, mod_MainClass.LagoonLog.blockID, this.woodMetadata);
                        }
                    }

                    for (var10 = 0; var10 < var6; ++var10)
                    {
                        var11 = par1World.getBlockId(par3, par4 + var10, par5);

                        if (var11 == 0 || Block.blocksList[var11] == null || Block.blocksList[var11].isLeaves(par1World, par3, par4 + var10, par5))
                        {
                            this.setBlockAndMetadata(par1World, par3, par4 + var10, par5, mod_MainClass.LagoonLog.blockID, this.woodMetadata);

                            if (var10 > 0)
                            {
                                if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3 - 1, par4 + var10, par5))
                                {
                                    this.setBlockAndMetadata(par1World, par3 - 1, par4 + var10, par5, Block.vine.blockID, ;
                                }

                                if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3, par4 + var10, par5 - 1))
                                {
                                    this.setBlockAndMetadata(par1World, par3, par4 + var10, par5 - 1, Block.vine.blockID, 1);
                                }
                            }
                        }

                        if (var10 < var6 - 1)
                        {
                            var11 = par1World.getBlockId(par3 + 1, par4 + var10, par5);

                            if (var11 == 0 || Block.blocksList[var11] == null || Block.blocksList[var11].isLeaves(par1World, par3 + 1, par4 + var10, par5))
                            {
                                this.setBlockAndMetadata(par1World, par3 + 1, par4 + var10, par5, mod_MainClass.LagoonLog.blockID, this.woodMetadata);

                                if (var10 > 0)
                                {
                                    if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3 + 2, par4 + var10, par5))
                                    {
                                        this.setBlockAndMetadata(par1World, par3 + 2, par4 + var10, par5, Block.vine.blockID, 2);
                                    }

                                    if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3 + 1, par4 + var10, par5 - 1))
                                    {
                                        this.setBlockAndMetadata(par1World, par3 + 1, par4 + var10, par5 - 1, Block.vine.blockID, 1);
                                    }
                                }
                            }

                            var11 = par1World.getBlockId(par3 + 1, par4 + var10, par5 + 1);

                            if (var11 == 0 || Block.blocksList[var11] == null || Block.blocksList[var11].isLeaves(par1World, par3 + 1, par4 + var10, par5 + 1))
                            {
                                this.setBlockAndMetadata(par1World, par3 + 1, par4 + var10, par5 + 1, mod_MainClass.LagoonLog.blockID, this.woodMetadata);

                                if (var10 > 0)
                                {
                                    if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3 + 2, par4 + var10, par5 + 1))
                                    {
                                        this.setBlockAndMetadata(par1World, par3 + 2, par4 + var10, par5 + 1, Block.vine.blockID, 2);
                                    }

                                    if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3 + 1, par4 + var10, par5 + 2))
                                    {
                                        this.setBlockAndMetadata(par1World, par3 + 1, par4 + var10, par5 + 2, Block.vine.blockID, 4);
                                    }
                                }
                            }

                            var11 = par1World.getBlockId(par3, par4 + var10, par5 + 1);

                            if (var11 == 0 || Block.blocksList[var11] == null || Block.blocksList[var11].isLeaves(par1World, par3, par4 + var10, par5 + 1))
                            {
                                this.setBlockAndMetadata(par1World, par3, par4 + var10, par5 + 1, mod_MainClass.LagoonLog.blockID, this.woodMetadata);

                                if (var10 > 0)
                                {
                                    if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3 - 1, par4 + var10, par5 + 1))
                                    {
                                        this.setBlockAndMetadata(par1World, par3 - 1, par4 + var10, par5 + 1, Block.vine.blockID, ;
                                    }

                                    if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3, par4 + var10, par5 + 2))
                                    {
                                        this.setBlockAndMetadata(par1World, par3, par4 + var10, par5 + 2, Block.vine.blockID, 4);
                                    }
                                }
                            }
                        }
                    }

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

    private void growLeaves(World par1World, int par2, int par3, int par4, int par5, Random par6Random)
    {
        byte var7 = 2;

        for (int var8 = par4 - var7; var8 <= par4; ++var8)
        {
            int var9 = var8 - par4;
            int var10 = par5 + 1 - var9;

            for (int var11 = par2 - var10; var11 <= par2 + var10 + 1; ++var11)
            {
                int var12 = var11 - par2;

                for (int var13 = par3 - var10; var13 <= par3 + var10 + 1; ++var13)
                {
                    int var14 = var13 - par3;

                    Block block = Block.blocksList[par1World.getBlockId(var11, var8, var13)];

                    if ((var12 >= 0 || var14 >= 0 || var12 * var12 + var14 * var14 <= var10 * var10) && 
                        (var12 <= 0 && var14 <= 0 || var12 * var12 + var14 * var14 <= (var10 + 1) * (var10 + 1)) && 
                        (par6Random.nextInt(4) != 0 || var12 * var12 + var14 * var14 <= (var10 - 1) * (var10 - 1)) && 
                        (block == null || block.canBeReplacedByLeaves(par1World, var11, var8, var13)))
                    {
                        this.setBlockAndMetadata(par1World, var11, var8, var13, mod_MainClass.LagoonLeaf.blockID, this.leavesMetadata);
                    }
                }
            }
        }
    }
    
    private void onPlantGrow(World world, int x, int y, int z, int sourceX, int sourceY, int sourceZ)
    {
        Block block = Block.blocksList[world.getBlockId(x, y, z)];
        if (block != null)
        {
            block.onPlantGrow(world, x, y, z, sourceX, sourceY, sourceZ);
        }
    }
}

 

 

 

Lastly this is the code implemented into my main mod class that registers my biome:

 

 

//Biomes
    Lagoon = (new BiomeGenLagoon(23).setBiomeName("LagoonBiome").setMinMaxHeight(-0.2F,0.2F).setTemperatureRainfall(0.8F, 0.9F));
    GameRegistry.addBiome(Lagoon);

 

 

 

Any help getting the tree to spawn in Only that biome would incredibly helpful. On another note I also need to know how to spawn a custom mob in only this same biome.

 

Thanks in advanced for anyone that can provide any assistance.

 

 

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  • 2 weeks later...

If you still haven't figured it out (seeing as this thread is a little bit old), your problem is that you're not overriding the BiomeGenBase method:

 

public WorldGenerator getRandomWorldGenForTrees(Random random)

 

If you don't override this method, Java will just use the one in BiomeGenBase, which, I think, gives you the default tree generator.

 

You also may need to change the BiomeDecorator's treesPerChunk field, and make sure your trees can spawn on your biome's top block.

 

Certain BiomeDecorator fields only change the way the biome is decorated if certain conditions are met. For the decorator to spawn dead bushes, the top block must be sand, mushrooms only spawn in low light levels (I think), clay only spawns underwater in a biome of the top block is dirt or grass. reeds also need either dirt, grass, sand, or gravel to spawn. Lilypads need water in the biome, so the minimum height must be negative.

 

Also, there's no need to override the decorate() method from BiomeGenBase if all you're doing is calling the one in BiomeGenBase.

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