UnstableStoneHelper.java

	public static boolean isBlockUnsupported(World world, int x, int y, int z) {
    	Block s;
        int dir = 0;
        int ox = 0;
        int oz = 0;
        int m;
        boolean a, b;
		do {
    		switch(dir) {
    			case 0:
    				ox++;
    				break;
    			case 1:
    				oz++;
    				break;
    			case 2:
    				ox--;
    				break;
    			case 3:
    				oz--;
    				break;
    		}
    		s = world.getBlock(x+ox, y, z+oz);
    		m = world.getBlockMetadata(x+ox, y, z+oz);
    		a = supportBlocks.indexOf(s) >= 0;
    		if(HardLibAPI.stoneManager.isUnstableBlock(s,m) && m != 0) {
    			a = false;
    		}
    		//a = a && !(HardLibAPI.stoneManager.isUnstableBlock(s) && m == 0);
    		s = world.getBlock(x+ox, y-1, z+oz);
    		m = world.getBlockMetadata(x+ox, y-1, z+oz);
    		b = supportBlocks.indexOf(s) >= 0;
    		if(HardLibAPI.stoneManager.isUnstableBlock(s,m) && m != 0) {
    			b = false;
    		}
    		b = b || (world.isBlockNormalCubeDefault(x+ox, y-1, z+oz, true) && world.doesBlockHaveSolidTopSurface(world, x+ox, y-1, z+oz));
    		if(!a || (ox > maxDist || ox < -maxDist || oz > maxDist || oz < -maxDist)) {
    			ox = 0;
    			oz = 0;
        		dir++;
    		}
    		else if(a && b) {
    			break;
    		}
    	} while(dir >= 0 && dir < 4);
    	if(dir == 4) {
    		return true;
    	}
    	return false;
	}