From e3f3296c2d78ee6dbaad0dc6c54dfcf99bed756f Mon Sep 17 00:00:00 2001
From: Anton Tarasenko <dkanus@gmail.com>
Date: Sat, 18 Jul 2020 02:30:55 +0700
Subject: [PATCH] Add ability to auto-create `Singleton`

Add an optional parameter that allows to auto-spawn
`Singleton` with `GetInstance()` call.
---
 sources/Core/Singleton.uc | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/sources/Core/Singleton.uc b/sources/Core/Singleton.uc
index 2bb945d..c4d61c4 100644
--- a/sources/Core/Singleton.uc
+++ b/sources/Core/Singleton.uc
@@ -32,11 +32,18 @@ var private Singleton activeInstance;
 //      Only a default value is ever used.
 var protected bool blockSpawning;
 
-public final static function Singleton GetInstance()
+public final static function Singleton GetInstance(optional bool spawnIfMissing)
 {
-    if (default.activeInstance != none && default.activeInstance.bPendingDelete)
-        return none;
-    return default.activeInstance;
+    local bool instanceExists;
+    instanceExists =    default.activeInstance != none
+                    &&  !default.activeInstance.bPendingDelete;
+    if (instanceExists) {
+        return default.activeInstance;
+    }
+    if (spawnIfMissing) {
+        return class'Acedia'.static.GetInstance().Spawn(default.class);
+    }
+    return none;
 }
 
 public final static function bool IsSingletonCreationBlocked()