From 9123d995aec19c453af47a36c91f7c2d38ab076f Mon Sep 17 00:00:00 2001
From: Simon Naarmann <s.naarmann@gmail.com>
Date: Sun, 18 Jun 2023 01:20:55 +0200
Subject: [PATCH] Fix #466: Don't go to unplayable next level

(cherry picked from commit 13207acafa90890d2ab28a05fe56f25c26d28fd7)
---
 src/game/core/game.d      | 3 ++-
 src/menu/outcome/single.d | 5 +++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/game/core/game.d b/src/game/core/game.d
index 45b45d81..7467df7b 100644
--- a/src/game/core/game.d
+++ b/src/game/core/game.d
@@ -108,7 +108,8 @@ public:
     this(ArgsToCreateGame args)
     in {
         assert (args.level !is null);
-        assert (args.level.playable);
+        assert (args.level.playable,
+            "Level is not playable. Don't create a Game for this.");
         assert (args.levelFilename !is null);
     }
     do {
diff --git a/src/menu/outcome/single.d b/src/menu/outcome/single.d
index 8988a3b8..dd17c957 100644
--- a/src/menu/outcome/single.d
+++ b/src/menu/outcome/single.d
@@ -221,5 +221,10 @@ public:
         return _nextLevel;
     }
 
+    override bool execute() const pure nothrow @safe @nogc
+    {
+        return super.execute && _nextLevel.level.playable;
+    }
+
     void dispose() { _preview.dispose(); }
 }