From ba69caffd286b01117269d878d08815f54daef67 Mon Sep 17 00:00:00 2001
From: RandomityGuy <31925790+RandomityGuy@users.noreply.github.com>
Date: Sun, 19 Feb 2023 18:50:36 +0530
Subject: [PATCH] preserve previews

---
 src/Mission.hx | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/Mission.hx b/src/Mission.hx
index 6d5a22b3..013e6bd6 100644
--- a/src/Mission.hx
+++ b/src/Mission.hx
@@ -51,6 +51,7 @@ class Mission {
 	#else
 	static var _previewRequest:Int;
 	#end
+	static var _previewCache:Map<Mission, h2d.Tile> = [];
 
 	public function new() {}
 
@@ -171,9 +172,16 @@ class Mission {
 			if (_previewRequest != null #if sys && !_previewRequest.fulfilled #end) {
 				Http.cancel(_previewRequest); // Cancel the previous request to save dequeing
 			}
+			if (_previewCache.exists(this)) {
+				var t = _previewCache.get(this);
+				onLoaded(t);
+				return t.getTexture().name;
+			}
 			_previewRequest = Marbleland.getMissionImage(this.id, (im) -> {
 				if (im != null) {
-					onLoaded(im.toTile());
+					var t = im.toTile();
+					_previewCache.set(this, t);
+					onLoaded(t);
 				} else {
 					Console.error("Preview image not found for " + this.path);
 					var img = new BitmapData(1, 1);