From 66eed9dcac37e8ae8a3906a2b0c0a3391e394043 Mon Sep 17 00:00:00 2001
From: AntonPieper <anton.pieper@informatik.hs-fulda.de>
Date: Sat, 24 Feb 2024 07:14:52 +0100
Subject: [PATCH] Add undo/redo

---
 index.html | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/index.html b/index.html
index 960a2cd..aa1162c 100644
--- a/index.html
+++ b/index.html
@@ -89,10 +89,12 @@
         const isHosted = protocol !== "file:";
         let raylibJs = undefined;
 
-        function startRaylib(selectedWasm){
-            var queryParams = new URLSearchParams(window.location.search);
-            queryParams.set("example", selectedWasm);
-            history.pushState(null, null, "?"+queryParams.toString());
+        function startRaylib(selectedWasm, save = true) {
+            if (save) {
+                const queryParams = new URLSearchParams(window.location.search);
+                queryParams.set("example", selectedWasm);
+                history.pushState(selectedWasm, null, "?"+queryParams.toString());
+            }
             raylibExampleSelect.value = selectedWasm;
 
             if (isHosted) {
@@ -125,6 +127,9 @@
 
         if (Object.values(wasmPaths).flat().includes(exampleParam)) startRaylib(exampleParam);
         else startRaylib(defaultWasm);
+        window.addEventListener("popstate", (ev) => {
+            startRaylib(ev.state, false); 
+        })
     </script>
 </body>
 </html>