Structure Generation Help (Y Coordinate)

[MistPhizzle]

The Structure Itself: http://pastie.org/8306221

The Generation Class: http://pastie.org/8306224

 

Yes, the generator is registered.

 

The blocks generate and all, my problem here is with the Y value. I have been testing generation in a super flat world (as it is pure grass / dirt) and find that the blocks are generating anywhere between levels 1-4, whereas I would like them to be above ground at all times. How do I get this to happen? I assume some changes need to be done with the Y value, I've tinkered with it here and there, and am still not getting the product I'd like.

 

Thanks in advance.

[Mazetar]

world.getTopSolidOrLiquidBlock(x pos, z pos);  Gives you the height (y value) of the top block at the x/z position.

 

[MistPhizzle]

world.getTopSolidOrLiquidBlock(x pos, z pos);  Gives you the height (y value) of the top block at the x/z position.

 

That works, but now they are spawning a little too often for my taste ( every few blocks or so). How could I limit the amount per chunk?

 

Code now looks like:

 

private void generateSurface(World world, Random random, int i, int j) {
	int firstBlockXCoord = i + random.nextInt(16);
	//		int firstBlockYCoord = random.nextInt(256);
	int firstBlockZCoord = j + random.nextInt(16);
	new AirTempleStructure().generate(world, random, firstBlockXCoord, world.getTopSolidOrLiquidBlock(firstBlockXCoord, firstBlockZCoord) - 1, firstBlockZCoord);
}

[MineMaarten]

private void generateSurface(World world, Random random, int i, int j) {
    if(random.nextInt(4) == 0){
	int firstBlockXCoord = i + random.nextInt(16);
	//		int firstBlockYCoord = random.nextInt(256);
	int firstBlockZCoord = j + random.nextInt(16);
	new AirTempleStructure().generate(world, random, firstBlockXCoord, world.getTopSolidOrLiquidBlock(firstBlockXCoord, firstBlockZCoord) - 1, firstBlockZCoord);
    }
}

In this case this means that every chunk has a 1/4 chance to spawn your structure. This ratio easily can be changed to your taste of course.