From 6f3a8a0946946e28213967a98b5f080e3cb2a5e1 Mon Sep 17 00:00:00 2001
From: Pacien TRAN-GIRARD
Date: Wed, 16 Mar 2016 06:55:13 +0100
Subject: Add null and empty list check

---
 src/ch/epfl/xblast/server/GameState.java | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src')

diff --git a/src/ch/epfl/xblast/server/GameState.java b/src/ch/epfl/xblast/server/GameState.java
index 6e7f8c4..0512510 100644
--- a/src/ch/epfl/xblast/server/GameState.java
+++ b/src/ch/epfl/xblast/server/GameState.java
@@ -289,6 +289,8 @@ public final class GameState {
      * @return the highest priority player
      */
     private PlayerID resolveConflict(List<PlayerID> claimants) {
+        if (claimants == null || claimants.isEmpty()) throw new IllegalArgumentException();
+
         return this.currentPlayerPriorityOrder()
                 .stream()
                 .filter(claimants::contains)
-- 
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