Update kanawatch 0.04 with a random character every minute

apps/kanawatch/ChangeLog

@@ -1,3 +1,4 @@
 0.01: First release
 0.02: Improve battery life, sprite resolution, fix launcher issue and unaligned text bug
 0.03: Reduce code size, refresh once a minute and faster refresh
+0.04: Show a random kana every minute to improve learning

apps/kanawatch/README.md

@@ -3,10 +3,17 @@
 A simple watchface design with hiragana and katakana
 cards for learning.
 
+## Changelog
+
+0.01: First release
+0.02: Improve battery life, sprite resolution, fix launcher issue and unaligned text bug
+0.03: Reduce code size, refresh once a minute and faster refresh
+0.04: Show a random kana every minute to improve learning
+
 ## Author
 
 Written by pancake in 2022, powered by insomnia
 
 ## Screenshots
 
-![hiragana and katakana](screenshot.jpg)
+![hiragana and katakana](screenshot.png)

apps/kanawatch/app.js

@@ -127,6 +127,18 @@ function next () {
   updateWatch(ohhmm);
 }
 
+function randKana() {
+  try {
+    const keys = Object.keys(katakana);
+    const total = keys.length;
+    let index = 0 | (Math.random() * total);
+    curkana = keys[index];
+    kana = hiramode ? hiragana[curkana] : katakana[curkana];
+  } catch (e) {
+    randKana();
+  }
+}
+
 function prev () {
   let oldk = '';
   let count = 0;
@@ -233,6 +245,7 @@ function tickWatch () {
   }
   const hhmm = zpad(now.getHours()) + ':' + zpad(now.getMinutes());
   if (hhmm !== ohhmm) {
+    randKana();
     updateWatch(hhmm);
     ohhmm = hhmm;
   }
@@ -257,3 +270,4 @@ setInterval(tickWatch, 1000 * 60);
 
 // show launcher when button pressed
 Bangle.setUI('clock');
+

apps/kanawatch/metadata.json

@@ -2,7 +2,7 @@
   "id": "kanawatch",
   "name": "Kanawatch",
   "shortName": "Kanawatch",
-  "version": "0.03",
+  "version": "0.04",
   "type": "clock",
   "description": "Learn Hiragana and Katakana",
   "icon": "app.png",