Introduce "last player standing" to death event.

It is now possible to check if an arena player who died was the last
player alive in the arena. Useful for special rewards and stuff.

src/com/garbagemule/MobArena/ArenaImpl.java

@@ -98,6 +98,9 @@ public class ArenaImpl implements Arena
     
     // Scoreboards
     private ScoreboardManager scoreboard;
+
+    // Last player standing
+    private Player lastStanding;
     
     /**
      * Primary constructor. Requires a name and a world.
@@ -484,6 +487,9 @@ public class ArenaImpl implements Arena
         if (event.isCancelled()) {
             return false;
         }
+
+        // Reset last standing
+        lastStanding = null;
         
         // Set the running boolean and disable arena if not disabled.
         boolean en = enabled;
@@ -652,9 +658,9 @@ public class ArenaImpl implements Arena
     public void playerDeath(Player p)
     {
         // Fire the event
-        ArenaPlayerDeathEvent event = new ArenaPlayerDeathEvent(p, this);
+        ArenaPlayerDeathEvent event = new ArenaPlayerDeathEvent(p, this, arenaPlayers.size() == 1);
         plugin.getServer().getPluginManager().callEvent(event);
-        
+
         arenaPlayers.remove(p);
         
         if (!settings.getBoolean("auto-respawn", true)) {
@@ -1053,7 +1059,7 @@ public class ArenaImpl implements Arena
     private void replacePermissions(Player p, PermissionAttachment rep) {
         PermissionAttachment old = attachments.get(p);
         if (old != null) {
-            p.removeAttachment(old);
+            old.remove();
             p.recalculatePermissions();
         }
         if (rep != null) {
@@ -1403,6 +1409,11 @@ public class ArenaImpl implements Arena
     public boolean hasIsolatedChat() {
         return isolatedChat;
     }
+
+    @Override
+    public Player getLastPlayerStanding() {
+        return lastStanding;
+    }
         
     /**
      * The "perfect equals method" cf. "Object-Oriented Design and Patterns"