I want to basically do if theres a stone block and theres a empty y place above it then generate custom block. I also want this to be in default world gen. So basically | if y<62 && Blocks.stone + y+1's block = airblock above it the custom block can spawn. Please find a way I could do this. Thanks!

Does anyone know ho maybe?

if(world.getBlock(x, y, z) == Blocks.stone && world.getBlock(x, y+1, z) == Blocks.air)

?

Were could I put it in this class: http://pastebin.com/FWXmuJnr

You would need a custom WorldGenMinable, or you do it instead of the WorldGenMinable you have inside addOreSpawn

You would need a custom WorldGenMinable, or you do it instead of the WorldGenMinable you have inside addOreSpawn

Like this? http://pastebin.com/YuA53cHC And in main: private CrystalManager crystalManager = new CrystalManager(); Then GameRegistry.registerWorldGenerator(crystalManager, 0); . And when I tried this It didnt work in Default world which is what im wanting it to do

You would need a custom WorldGenMinable, or you do it instead of the WorldGenMinable you have inside addOreSpawn

Like this? http://pastebin.com/YuA53cHC And in main: private CrystalManager crystalManager = new CrystalManager(); Then GameRegistry.registerWorldGenerator(crystalManager, 0); . And when I tried this It didnt work in Default world which is what im wanting it to do

 

No, this bit:

 

                    (new WorldGenMinable(CrystalMod.Aqua_SmallCrystal,
                        maxVeinSize)).generate(world, random,
                        posX, posY, posZ);

 

There's a reason I said "WorldGenMinable" not "IWorldGenerator."  WorldGenMinable only replaces stone and has no rules regarding stone/air boundaries.

 

Also what diesieben07 said.