if (block.getType() == Material.PORTAL)
return;
CreeperBlock cBlock = CreeperBlock.newBlock(block.getState());
if (cBlock == null || checked.contains(new ShortLocation(block)))
return;
checked.add(new ShortLocation(block));
if ((CreeperConfig.getBool(CfgVal.PREVENT_CHAIN_REACTION) && block.getType().equals(Material.TNT))
|| world.isProtected(block))
{
CreeperBlock b = CreeperBlock.newBlock(block.getState());