add emotes and npcs. this really needs a cleanup

common/npc.js

@@ -0,0 +1,30 @@
+import { distF, uuidv4 } from './util.js'
+
+class NPC {
+    constructor(you) {
+        let pos = { x: Math.random() * 1000 - 50, y: Math.random() * 1000 - 50 };
+        let vel = { x: 0, y: 0 };
+
+        this.pos = pos;
+        this.vel = vel;
+
+        this.you = you || uuidv4();
+
+        this.type = 'NPC';
+    
+        this.immortal = true;
+    }
+    handleTick(game) {
+        let { entities } = game;
+
+        let rEntity = entities[Math.floor(Math.random() * entities.length)];
+
+        this.vel.x += (rEntity.pos.x - this.pos.x) * 0.0001;
+        this.vel.y += (rEntity.pos.y - this.pos.y) * 0.0001;
+
+        this.pos.x += this.vel.x;
+        this.pos.y += this.vel.y;
+    }
+}
+
+export default NPC;