Sync with published result of episode 20.

public/js/Entity.js

@@ -19,7 +19,9 @@ export class Trait {
     }
 
     listen(name, callback, count = Infinity) {
-        this.listeners.push({name, callback, count});
+        const listener = {name, callback, count};
+        this.listeners.push(listener);
+        console.log("Added listener", this, name);
     }
 
     finalize(entity) {
@@ -52,6 +54,8 @@ export default class Entity {
         this.events = new EventBuffer();
         this.sounds = new Set();
 
+        this.events = new EventBuffer();
+
         this.pos = new Vec2(0, 0);
         this.vel = new Vec2(0, 0);
         this.size = new Vec2(0, 0);

public/js/EventBuffer.js

@@ -6,6 +6,7 @@ export default class EventBuffer {
     emit(name, ...args) {
         const event = {name, args};
         this.events.push(event);
+        console.log(this.events);
     }
 
     process(name, callback) {

public/js/entities/Koopa.js

@@ -89,7 +89,8 @@ class Behavior extends Trait {
         this.state = STATE_PANIC;
     }
 
-    update(us, {deltaTime}) {
+    update(us, gameContext) {
+        const deltaTime = gameContext.deltaTime;
         if (this.state === STATE_HIDING) {
             this.hideTime += deltaTime;
             if (this.hideTime > this.hideDuration) {

public/js/main.js

@@ -26,6 +26,7 @@ async function main(canvas) {
     const camera = new Camera();
 
     const mario = createPlayer(entityFactory.mario());
+    window.mario = mario;
 
     const playerEnv = createPlayerEnv(mario);
     level.entities.add(playerEnv);

public/js/traits/Player.js

@@ -4,12 +4,13 @@ import Stomper from '../traits/Stomper.js';
 export default class Player extends Trait {
     constructor() {
         super('player');
+        this.coins = 0;
         this.lives = 3;
         this.score = 0;
 
         this.listen(Stomper.EVENT_STOMP, () => {
             this.score += 100;
-            console.log("Stomp", this.score);
+            console.log('Score', this.score);
         });
     }
 }

public/js/traits/PlayerController.js

@@ -9,6 +9,10 @@ export default class PlayerController extends Trait {
         this.player = null;
         this.score = 0;
         this.time = 300;
+
+        this.listen('stomp', () => {
+            this.score += 100;
+        });
     }
 
     setPlayer(entity) {