5 blocks is enough to not stand directly in new the lava or be directly ignited. If you stand at a position where people can pour lava 249 blocks over you head, bad luck. @JustinGuy: Code: public class NoFireKill extends JavaPlugin implements Listener { @Override public void onEnable() { this.getServer().getPluginManager().registerEvents(this, this); } @EventHandler(priority=EventPriority.HIGHEST, ignoreCancelled=true) public void onBlockPlace(BlockPlaceEvent event){ if (Material.FIRE.equals(event.getBlock().getType())) { doCheck(event, event.getPlayer(), event.getBlockAgainst().getLocation()); } } @EventHandler(priority=EventPriority.HIGHEST, ignoreCancelled=true) public void onBucketEmpty(PlayerBucketEmptyEvent event) { if (Material.LAVA_BUCKET.equals(event.getBucket())) { doCheck(event, event.getPlayer(), event.getBlockClicked().getLocation()); } } protected void doCheck(Cancellable event, Player player, Location location) { if (otherPlayerAround(player, location)) { event.setCancelled(true); player.sendMessage("Keep away from other players when playing with fire!"); } } protected boolean otherPlayerAround(Player player, Location location) { for (Player otherPlayer : location.getWorld().getPlayers()) { if (!otherPlayer.equals(player)) { if (otherPlayer.getLocation().distance(location) <= 6) { return true; } } } return false; } Yes, I use the clicked block, in one case to save calculating the target block, in the other case to have both cases work the same way.
Ok, I see this case. If Justin decides to use this, we should do some tests to find a usable compromise between "to restrictive" and "doesn't help enough". That'd be fun 20 blocks? You could sleepwalk around with that protection range.
It is not actually that far when you think about it, But I agree more like maybe 10-15? 10 will give you ample time to notice and stop and 15's just to be safe.
10 is ok, I think. I can think of a few cases of team-play where this can become annoying, but that's the price of safety. 15 is so much that people start becoming careless. I said 5 initially because this can only catch the least prepared PKing. If I really want to kill someone, I dig under the surface where I expect them to walk on. Leave 1 layer of dirt, then some air, then lava. Maybe put obsidian (or just a stack of sand) around the pit, so they cannot get out fast. When they come by, spleef! That'd be very hard to prevent, if not impossible. Preventing a BlockBreak if someone is standing on that block would be simple (same code as above, basically), but at 20 blocks distance and only if the drop is dangerous and the hole actually is in the path of the other player? No way.
