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js/assets.js

 		background: new ImageSource("background", null, ".jpg"),
 		wall: new ImageSource("wall"),
 		wall_overlap: new ImageSource("wall-overlap"),
+		powerup: new ImageSource("powerup"),
 	},
 
 	audio: {
 	var ext = ext || ".mp3";
 
 	this.elems = [];
-	for (var i = 0; i < 10; ++i)
+	for (var i = 0; i < 10; ++i) {
 		this.elems[i] = new Audio(commonPath+"/"+src+ext);
+
+		this.elems[i].addEventListener("ended", function() {
+			this.emit("ended");
+		}.bind(this));
+	}
+
 	this.ready = false;
 	this.index = 0;
 
 		this.emit("load");
 	}.bind(this));
 
-	this.elems[0].addEventListener("ended", function() {
-		this.emit("ended");
-	}.bind(this));
-
 	this.elems[0].onerror = function() {
 		console.error("Error with", src);
 	}

js/entities.js

 function PowerUp(game, x, y, type) {
 	makeEnt(this, game, 100);
 	this.layer = 1;
+	this.img = assets.imgs.powerup;
 
 	this.type = type;
 
 
 	this.pos.set({ x: x, y: y });
 }
-PowerUp.prototype.draw = function(ctx) {
-	ctx.fillStyle = "#33ee33";
-	ctx.strokeStyle = "#227722";
-	ctx.beginPath();
-	ctx.arc(15, 15, 15, 0, 2 * Math.PI);
-	ctx.stroke();
-	ctx.fill();
+PowerUp.prototype.draw = function() {}
+PowerUp.prototype.drawOverlay = function(ctx) {
+	ctx.scale(0.3, 0.3);
+	ctx.translate(-20, -5);
+	this.img.draw(ctx);
 }
 PowerUp.prototype.update = function() {
 	if (this.game.camera.x > this.pos.x + this.shape.width())