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Tree Generation Help

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Posted April 27, 201312 yr

Tree generation in my biome keeps crashing. Tree Gen code is copied from the WorldGenTree class. Not sure what the problem is, any help appreciated.

Crash:

 net.minecraft.util.ReportedException: Ticking memory connection
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.network.NetworkListenThread.networkTick(NetworkListenThread.java:60)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.server.integrated.IntegratedServerListenThread.networkTick(IntegratedServerListenThread.java:109)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:674)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:570)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:127)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:468)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)
2013-04-27 09:20:34 [iNFO] [sTDERR] Caused by: java.lang.NullPointerException
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.world.biome.BiomeDecorator.decorate(BiomeDecorator.java:260)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.world.biome.BiomeDecorator.decorate(BiomeDecorator.java:203)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.world.biome.BiomeGenBase.decorate(BiomeGenBase.java:366)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.world.gen.ChunkProviderGenerate.populate(ChunkProviderGenerate.java:577)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.world.gen.ChunkProviderServer.populate(ChunkProviderServer.java:258)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.world.chunk.Chunk.populateChunk(Chunk.java:1244)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:153)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.server.management.PlayerInstance.<init>(PlayerInstance.java:36)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.server.management.PlayerManager.getOrCreateChunkWatcher(PlayerManager.java:89)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.server.management.PlayerManager.updateMountedMovingPlayer(PlayerManager.java:248)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.server.management.ServerConfigurationManager.serverUpdateMountedMovingPlayer(ServerConfigurationManager.java:276)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.network.NetServerHandler.handleFlying(NetServerHandler.java:408)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.network.packet.Packet10Flying.processPacket(Packet10Flying.java:51)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.network.MemoryConnection.processReadPackets(MemoryConnection.java:89)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.network.NetServerHandler.networkTick(NetServerHandler.java:134)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	at net.minecraft.network.NetworkListenThread.networkTick(NetworkListenThread.java:53)
2013-04-27 09:20:34 [iNFO] [sTDERR] 	... 6 more
2013-04-27 09:20:34 [sEVERE] [Minecraft-Server] Encountered an unexpected exception ReportedException
net.minecraft.util.ReportedException: Ticking memory connection
at net.minecraft.network.NetworkListenThread.networkTick(NetworkListenThread.java:60)
at net.minecraft.server.integrated.IntegratedServerListenThread.networkTick(IntegratedServerListenThread.java:109)
at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:674)
at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:570)
at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:127)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:468)
at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)
Caused by: java.lang.NullPointerException
at net.minecraft.world.biome.BiomeDecorator.decorate(BiomeDecorator.java:260)
at net.minecraft.world.biome.BiomeDecorator.decorate(BiomeDecorator.java:203)
at net.minecraft.world.biome.BiomeGenBase.decorate(BiomeGenBase.java:366)
at net.minecraft.world.gen.ChunkProviderGenerate.populate(ChunkProviderGenerate.java:577)
at net.minecraft.world.gen.ChunkProviderServer.populate(ChunkProviderServer.java:258)
at net.minecraft.world.chunk.Chunk.populateChunk(Chunk.java:1244)
at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:153)
at net.minecraft.server.management.PlayerInstance.<init>(PlayerInstance.java:36)
at net.minecraft.server.management.PlayerManager.getOrCreateChunkWatcher(PlayerManager.java:89)
at net.minecraft.server.management.PlayerManager.updateMountedMovingPlayer(PlayerManager.java:248)
at net.minecraft.server.management.ServerConfigurationManager.serverUpdateMountedMovingPlayer(ServerConfigurationManager.java:276)
at net.minecraft.network.NetServerHandler.handleFlying(NetServerHandler.java:408)
at net.minecraft.network.packet.Packet10Flying.processPacket(Packet10Flying.java:51)
at net.minecraft.network.MemoryConnection.processReadPackets(MemoryConnection.java:89)
at net.minecraft.network.NetServerHandler.networkTick(NetServerHandler.java:134)
at net.minecraft.network.NetworkListenThread.networkTick(NetworkListenThread.java:53)
... 6 more

My WorldGenYellowTree code:

/** The minimum height of a generated tree. */
    private final int minTreeHeight;

    /** True if this tree should grow Vines. */
    private final boolean vinesGrow;

    /** The metadata value of the wood to use in tree generation. */
    private final int metaWood;

    /** The metadata value of the leaves to use in tree generation. */
    private final int metaLeaves;

    public WorldGenYellowTree(boolean par1)
    {
        this(par1, 4, 0, 0, false);
    }

    public WorldGenYellowTree(boolean par1, int par2, int par3, int par4, boolean par5)
    {
        super(par1);
        this.minTreeHeight = par2;
        this.metaWood = par3;
        this.metaLeaves = par4;
        this.vinesGrow = par5;
    }

    public boolean generate(World par1World, Random par2Random, int par3, int par4, int par5)
    {
        int l = par2Random.nextInt(3) + this.minTreeHeight;
        boolean flag = true;

        if (par4 >= 1 && par4 + l + 1 <= 256)
        {
            int i1;
            byte b0;
            int j1;
            int k1;

            for (i1 = par4; i1 <= par4 + 1 + l; ++i1)
            {
                b0 = 1;

                if (i1 == par4)
                {
                    b0 = 0;
                }

                if (i1 >= par4 + 1 + l - 2)
                {
                    b0 = 2;
                }

                for (int l1 = par3 - b0; l1 <= par3 + b0 && flag; ++l1)
                {
                    for (j1 = par5 - b0; j1 <= par5 + b0 && flag; ++j1)
                    {
                        if (i1 >= 0 && i1 < 256)
                        {
                            k1 = par1World.getBlockId(l1, i1, j1);

                            Block block = Block.blocksList[k1];

                            if (k1 != 0 &&
                               !block.isLeaves(par1World, l1, i1, j1) &&
                                k1 != Block.grass.blockID &&
                                k1 != Block.dirt.blockID &&
                               !block.isWood(par1World, l1, i1, j1))
                            {
                                flag = false;
                            }
                        }
                        else
                        {
                            flag = false;
                        }
                    }
                }
            }

            if (!flag)
            {
                return false;
            }
            else
            {
                i1 = par1World.getBlockId(par3, par4 - 1, par5);
                Block soil = Block.blocksList[i1];
                boolean isSoil = (soil != null && soil.canSustainPlant(par1World, par3, par4 - 1, par5, ForgeDirection.UP, (BlockSapling)Block.sapling));

                if (isSoil && par4 < 256 - l - 1)
                {
                    soil.onPlantGrow(par1World, par3, par4 - 1, par5, par3, par4, par5);
                    b0 = 3;
                    byte b1 = 0;
                    int i2;
                    int j2;
                    int k2;

                    for (j1 = par4 - b0 + l; j1 <= par4 + l; ++j1)
                    {
                        k1 = j1 - (par4 + l);
                        i2 = b1 + 1 - k1 / 2;

                        for (j2 = par3 - i2; j2 <= par3 + i2; ++j2)
                        {
                            k2 = j2 - par3;

                            for (int l2 = par5 - i2; l2 <= par5 + i2; ++l2)
                            {
                                int i3 = l2 - par5;

                                if (Math.abs(k2) != i2 || Math.abs(i3) != i2 || par2Random.nextInt(2) != 0 && k1 != 0)
                                {
                                    int j3 = par1World.getBlockId(j2, j1, l2);
                                    Block block = Block.blocksList[j3];

                                    if (block == null || block.canBeReplacedByLeaves(par1World, j2, j1, l2))
                                    {
                                        this.setBlockAndMetadata(par1World, j2, j1, l2, Main.yellowLeaves.blockID, this.metaLeaves);
                                    }
                                }
                            }
                        }
                    }

                    for (j1 = 0; j1 < l; ++j1)
                    {
                        k1 = par1World.getBlockId(par3, par4 + j1, par5);

                        Block block = Block.blocksList[k1];

                        if (k1 == 0 || block == null || block.isLeaves(par1World, par3, par4 + j1, par5))
                        {
                            this.setBlockAndMetadata(par1World, par3, par4 + j1, par5, Block.wood.blockID, this.metaWood);

                            if (this.vinesGrow && j1 > 0)
                            {
                                if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3 - 1, par4 + j1, par5))
                                {
                                    this.setBlockAndMetadata(par1World, par3 - 1, par4 + j1, par5, Block.vine.blockID, ;
                                }

                                if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3 + 1, par4 + j1, par5))
                                {
                                    this.setBlockAndMetadata(par1World, par3 + 1, par4 + j1, par5, Block.vine.blockID, 2);
                                }

                                if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3, par4 + j1, par5 - 1))
                                {
                                    this.setBlockAndMetadata(par1World, par3, par4 + j1, par5 - 1, Block.vine.blockID, 1);
                                }

                                if (par2Random.nextInt(3) > 0 && par1World.isAirBlock(par3, par4 + j1, par5 + 1))
                                {
                                    this.setBlockAndMetadata(par1World, par3, par4 + j1, par5 + 1, Block.vine.blockID, 4);
                                }
                            }
                        }
                    }

                    if (this.vinesGrow)
                    {
                        for (j1 = par4 - 3 + l; j1 <= par4 + l; ++j1)
                        {
                            k1 = j1 - (par4 + l);
                            i2 = 2 - k1 / 2;

                            for (j2 = par3 - i2; j2 <= par3 + i2; ++j2)
                            {
                                for (k2 = par5 - i2; k2 <= par5 + i2; ++k2)
                                {
                                    Block block = Block.blocksList[par1World.getBlockId(j2, j1, k2)];
                                    if (block != null && block.isLeaves(par1World, j2, j1, k2))
                                    {
                                        if (par2Random.nextInt(4) == 0 && par1World.getBlockId(j2 - 1, j1, k2) == 0)
                                        {
                                            this.growVines(par1World, j2 - 1, j1, k2, ;
                                        }

                                        if (par2Random.nextInt(4) == 0 && par1World.getBlockId(j2 + 1, j1, k2) == 0)
                                        {
                                            this.growVines(par1World, j2 + 1, j1, k2, 2);
                                        }

                                        if (par2Random.nextInt(4) == 0 && par1World.getBlockId(j2, j1, k2 - 1) == 0)
                                        {
                                            this.growVines(par1World, j2, j1, k2 - 1, 1);
                                        }

                                        if (par2Random.nextInt(4) == 0 && par1World.getBlockId(j2, j1, k2 + 1) == 0)
                                        {
                                            this.growVines(par1World, j2, j1, k2 + 1, 4);
                                        }
                                    }
                                }
                            }
                        }

                        if (par2Random.nextInt(5) == 0 && l > 5)
                        {
                            for (j1 = 0; j1 < 2; ++j1)
                            {
                                for (k1 = 0; k1 < 4; ++k1)
                                {
                                    if (par2Random.nextInt(4 - j1) == 0)
                                    {
                                        i2 = par2Random.nextInt(3);
                                        this.setBlockAndMetadata(par1World, par3 + Direction.offsetX[Direction.rotateOpposite[k1]], par4 + l - 5 + j1, par5 + Direction.offsetZ[Direction.rotateOpposite[k1]], Block.cocoaPlant.blockID, i2 << 2 | k1);
                                    }
                                }
                            }
                        }
                    }

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

    /**
     * Grows vines downward from the given block for a given length. Args: World, x, starty, z, vine-length
     */
    private void growVines(World par1World, int par2, int par3, int par4, int par5)
    {
        this.setBlockAndMetadata(par1World, par2, par3, par4, Block.vine.blockID, par5);
        int i1 = 4;

        while (true)
        {
            --par3;

            if (par1World.getBlockId(par2, par3, par4) != 0 || i1 <= 0)
            {
                return;
            }

            this.setBlockAndMetadata(par1World, par2, par3, par4, Block.vine.blockID, par5);
            --i1;
        }
    }

BiomeGenAutumnForest:

/** The tree generator. */
    public WorldGenYellowTree worldGeneratorYellowTrees;
    public WorldGenOrangeTree worldGeneratorOrangeTrees;

public BiomeGenAutumnForest(int id) {
	super(id);
	this.spawnableCreatureList.add(new SpawnListEntry(EntityWolf.class, 5,
			4, 4));
	this.theBiomeDecorator.treesPerChunk = 10;
	this.theBiomeDecorator.grassPerChunk = 2;

}

public WorldGenerator getRandomWorldGenForTrees(Random par1Random) {
	return (WorldGenerator) (par1Random.nextInt(5) == 0 ? this.worldGeneratorForest
			: (par1Random.nextInt(10) == 0 ? this.worldGeneratorYellowTrees
					: this.worldGeneratorOrangeTrees));
}

http://mag.racked.eu/cimage/i6000/Achievement++get%21/Newb+Modder%21/mca.png[/img]

April 27, 201312 yr

Author

Found the issue.

this.worldGeneratorYellowTrees = new WorldGenYellowTree(false);
	this.worldGeneratorOrangeTrees = new WorldGenOrangeTree(false);

Was missing these two lines of code.

http://mag.racked.eu/cimage/i6000/Achievement++get%21/Newb+Modder%21/mca.png[/img]

This topic is now closed to further replies.

https://forums.minecraftforge.net/topic/7895-tree-generation-help/

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Configuration editors who bring features to life using plugins, resource packs, quests, menus, and systems.

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Backend coders who create and maintain custom plugins, optimize performance, and bring new mechanics to life.

🟪 Media Team
Artists, editors, and designers who create graphics, trailers, animations, and promo content.

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Streamers and YouTubers who help grow our player base. Creators get promotions and commissions on purchases through their codes.

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We’re still small, but our ambitions are huge. With your help, we can turn Elivius into a legendary community where players feel at home and excited to return.

📌 All requirements are currently waived to help motivated applicants get started.
💬 Join our Discord and apply in the #staff-applications channel today!
👉 https://discord.gg/4HBU5tBDqc

Elivius wants YOU. Let’s build something unforgettable, together.

By AidenJules_ · Posted Sunday at 03:58 AM3 days

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Tree Generation Help

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