Fix intermittent bug with undo.

1 files changed, 4 insertions, 3 deletions

diff --git a/rules.ts b/rules.ts
index 1939d74..1cc024a 100644
--- a/rules.ts
+++ b/rules.ts
@@ -172,11 +172,12 @@ export function action(
   action: string,
   arg: unknown
 ) {
-  if (action !== 'undo' && state.state !== 'choose_card') {
-    state.undo = push_undo();
+  game = state;
+
+  if (action !== 'undo' && game.state !== 'choose_card') {
+    push_undo();
   }
 
-  game = state;
   let S = states[game.state];
   if (action in S) S[action](arg, player);
   else if (action === 'undo' && game.undo && game.undo.length > 0) pop_undo();