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[1.6.2]Clear cube-shaped area in world


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I am trying to put a platform for the player to spawn on and I want all of the platform to be at least visible and I want the player to be able to spawn on it. Currently, if it is in the side of a hill, it is useless, if it is under a tree, the player spawns on top of the tree instead of on the platform. That is why I want to clear a 9 block high area above the platform. I have code to do it, but it doesn't work. I have three nested while loops (one for x, y, and z) and it uses World.setBlockToAir. It only seems to clear either one part of a row or none at all.

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for(x=-3;x<=3;x++) {

  for(y=-3;y<=3;y++) {

    for(y=-3;y<=3;y++) {






Seriously, this is basic java.

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I had something similar to what Draco18s had but each is in a different method:


private void clearAreaCube(int x, int z, int xD, int zd, int y, int yd,

World w) {

int i = 1;


while (i <= xD) {

clearColumnRow(x+i, z, zd, y, yd, w);





private void clearColumnRow(int i, int z, int zd, int y, int yd, World w) {

int j = 1;


while (j <= zd) {

clearColumn(i, z+j, y, yd, w);





private void clearColumn(int i, int j, int y, int yd, World w) {

int k = 1;


while (k <= yd) {

w.setBlockToAir(i, j, y+k);





xD, yd, and zd are the change in x, y and z respectively. I originally had three nested while loops and it only cleared one row of blocks. I just tried the alternative code that was suggested, and it cleared no more than last time. Both pieces of code seemed to clear trees completely from the cube, but I just think that they didn't spawn. After that, I took out the clearing code and placed the structure on the first level that could see the sky (it works in most worlds). Thanks for your help anyway.

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I can't see any obvious mistake in that code.

What values do you call this with ?


Bear in mind that in World#setBlockToAir(int,int,int), the middle parameter is the height value.

(Just saying this because your "clearColumn" is clearing horizontally)


It might also be worth making your world instance a field of this class, so you don't have to pass it through all those methods.

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