Like the title says, I have been trying for a while to make my custom sapling grow with something other than bonemeal. What I want to know, is what would I have to code in order to make my sapling create the tree randomly when rightclicked with certain item.. Like lets say I right clicked it with redstone for instance and It would grow.

Thank you very much, this has resolved my dilemma. Now I have another question, how would I make my sapling capable of generating different types of trees. Similar to how oak saplings have chance of creating a giant tree?

Ok, now I have a bit of another issue... For some reason, I occasionally get Phantom trees, where its blocks seem to stay solid and stay present until they are right clicked, or leave and rejoin world, any ideas?

Ok, now next question? What could be the reason as to why my sapling doesn't always disappear when the tree generates, and sometimes disappears before the tree even generate?

Show your code.

Ok:

 

public void growTree(World world, int i, int j, int k, Random random)
   {
     world.setBlockToAir(i, j, k);
     WorldGenFakeTrees obj = new WorldGenFakeTrees(false);
			WorldGenTreeTest obj2 = new WorldGenTreeTest();
			int treeChoice = random.nextInt(5);
			if(treeChoice == 2){
			 if (!obj.generate(world, random, i, j, k)) {
				world.setBlock(i, j, k, this, 0, 3);
			 }	
			}
			if(treeChoice == 1){
			  if (!obj2.generate(world, random, i-2, j, k-2)) {
       world.setBlock(i, j, k, this, 0, 3);
       }
			}
			if(treeChoice == 3){
				if (!obj2.generate(world, random, i-2, j, k-2)) {
					world.setBlock(i, j, k, this, 0, 3);
			    }
				if (!obj.generate(world, random, i, j, k)) {
					world.setBlock(i, j, k, this, 0, 3);
				 }	
			}

			  }

public class WorldGenTreeTest {
private int metaleaves;
    
public WorldGenTreeTest() {
}
public boolean generate(World world, Random rand, int i, int j, int k) {

	this.metaleaves = rand.nextInt(11);
	if (!world.isRemote){
		if (world.getBlock(i + 2, j - 1, k + 2) == Ids.blockFrass
			&& world.getBlock(i + 3, j, k + 2) == Blocks.air
			&& world.getBlock(i, j + 5, k) == Blocks.air
			&& world.getBlock(i + 3, j + 5, k + 3) == Blocks.air
			&& world.getBlock(i - 3, j + 5, k + 3) == Blocks.air
			&& world.getBlock(i + 3, j + 5, k - 3) == Blocks.air
			&& world.getBlock(i - 3, j + 5, k - 3) == Blocks.air) 
		{
			for(int x = 0; x <= 4;x++){
			for(int y = 0; y <= 3;y++){
				for(int z = 0;z <= 3; z++){
					world.setBlock(i + 2, j + y, k + 2, AMBlocks.BionicMass); //uses (y)
					if(x != 2){
						world.setBlock(i + x, j + 1, k + 2, AMBlocks.FoliageArray, this.metaleaves, 3); //uses (x)
						world.setBlock(i + 2, j + 1, k + x, AMBlocks.FoliageArray, this.metaleaves, 3);
						if(x == 3 || x == 1){
							world.setBlock(i + x, j + 1, k + 1, AMBlocks.FoliageArray, this.metaleaves, 3);
							world.setBlock(i + x, j + 1, k + 3, AMBlocks.FoliageArray, this.metaleaves, 3);
						}							
					}						
				}					
			}				
		}			
			world.setBlock(i + 2, j + 4, k + 2, AMBlocks.FoliageArray, this.metaleaves, 3);

			//layer2			
			world.setBlock(i + 3, j + 2, k + 2, AMBlocks.FoliageArray, this.metaleaves, 3);
			world.setBlock(i + 1, j + 2, k + 2, AMBlocks.FoliageArray, this.metaleaves, 3);
			world.setBlock(i + 2, j + 2, k + 3, AMBlocks.FoliageArray, this.metaleaves, 3);
			world.setBlock(i + 2, j + 2, k + 1, AMBlocks.FoliageArray, this.metaleaves, 3);

			//layer3
			world.setBlock(i + 3, j + 3, k + 2, AMBlocks.FoliageArray, this.metaleaves, 3);
			world.setBlock(i + 1, j + 3, k + 2, AMBlocks.FoliageArray, this.metaleaves, 3);
			world.setBlock(i + 2, j + 3, k + 3, AMBlocks.FoliageArray, this.metaleaves, 3);
			world.setBlock(i + 2, j + 3, k + 1, AMBlocks.FoliageArray, this.metaleaves, 3);

		}

	}
	return true;
}
}

 

Dang, Tis be strange

			if(treeChoice == 3){
				if (!obj2.generate(world, random, i-2, j, k-2)) {
					world.setBlock(i, j, k, this, 0, 3);
			    }
				if (!obj.generate(world, random, i, j, k)) {
					world.setBlock(i, j, k, this, 0, 3);
				 }	
			}

Do those setBlock commands put your sapling back? As for the sapling vanishing, you set the block to air, then do all your checking. So when everything is done, there is a 50% chance of your sapling vanishing because you have 6 possible outcomes from your randomized and you're only checking for 3 possible outcomes.

			if(treeChoice == 3){
				if (!obj2.generate(world, random, i-2, j, k-2)) {
					world.setBlock(i, j, k, this, 0, 3);
			    }
				if (!obj.generate(world, random, i, j, k)) {
					world.setBlock(i, j, k, this, 0, 3);
				 }	
			}

Do those setBlock commands put your sapling back? As for the sapling vanishing, you set the block to air, then do all your checking. So when everything is done, there is a 50% chance of your sapling vanishing because you have 6 possible outcomes from your randomized and you're only checking for 3 possible outcomes.

I think so. But how would I fix that?

Only do world.setBlockToAir(i, j, k); when treeChoice is 1 or 2 or 3. (How simple..)