add leaderboard

static/js/index.js

@@ -212,7 +212,7 @@ class Game extends GameBasic {
 
         if (this.entities.length == 0) this.entities = [this.player];
     }
-    init() {
+    async init() {
         super.init();
 
         let that = this;
@@ -229,6 +229,19 @@ class Game extends GameBasic {
         setInterval(function () { that.render() }, 1000 / 60);
 
         game.canvas.onclick = () => that.click();
+
+        let jason = await (fetch('/leaderboard').then(x => x.json()))
+
+        let scores = {};
+
+        for (let e of jason) {
+            scores[e.ip] = scores[e.ip] || 0;
+            scores[e.ip] += e.ko ** 2;
+        }
+
+        scores = Object.entries(scores).sort((a,b) => b.ko - a.ko);
+
+        document.querySelector('.lb').textContent = scores.map(x => `${x[0]}: ${x[1]}`).join('\n');
     }
 }