From e40afd69c59e1540f7c4a760a4eede70c063a3f7 Mon Sep 17 00:00:00 2001
From: Mischa POSLAWSKY <perl@shiar.org>
Date: Thu, 23 Dec 2021 02:27:04 +0100
Subject: [PATCH] word/memory: celebration animation on completion

---
 word/memory.js  |  3 +++
 word/memory.plp | 15 +++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/word/memory.js b/word/memory.js
index 0e523a1..c3adfd4 100644
--- a/word/memory.js
+++ b/word/memory.js
@@ -26,6 +26,9 @@ class WordMemory {
 			// lock both as correct
 			this.turned.forEach(card => put(card, '.good![onclick]'));
 			this.turned = [];
+			if (Array.from(this.form.children).every(card => card.classList.contains('good'))) {
+				put(this.form, '.good');
+			}
 			return;
 		}
 
diff --git a/word/memory.plp b/word/memory.plp
index 8847713..1bb8ceb 100644
--- a/word/memory.plp
+++ b/word/memory.plp
@@ -6,6 +6,10 @@ Html({
 <script src="/word/memory.js"></script>
 <style>
 /* cards */
+html {
+	overflow: hidden; /* rotation overflow on celebration */
+}
+
 figure {
 	display: inline-block;
 	background: #224;
@@ -42,6 +46,17 @@ figure.bad img {
 figure.good {
 	opacity: .8;
 }
+
+.good figure {
+	animation: celebration 5s linear infinite;
+	background: none;
+	border: 0;
+}
+@keyframes celebration {
+	0% { filter: hue-rotate(0deg); transform: rotate(0deg) }
+	50% { filter: hue-rotate(180deg); transform: rotate(180deg) }
+	100% { filter: hue-rotate(360deg); transform: rotate(360deg) }
+}
 </style>
 EOT
 });
-- 
2.30.0