Splitted classes into files

index.html

@@ -7,6 +7,10 @@
             padding: 0;
         }
     </style>
+    <script src="Key.js"></script>
+    <script src="Intro.js"></script>
+    <script src="Score.js"></script>
+    <script src="Bar.js"></script>
     <script src="index.js"></script>
 </head>
 

index.js

@@ -2,27 +2,13 @@
 
 document.addEventListener('DOMContentLoaded', init);
 
-let Key = {
-    _pressed: {},
-    isDown: function (keyCode) {
-        return this._pressed[keyCode];
-    },
-    onKeydown: function (event) {
-        this._pressed[event.code] = true;
-    },
-    onKeyup: function (event) {
-        delete this._pressed[event.code];
-    }
-};
 
-let ctx, canvas = document.createElement("canvas");
 function init() {
+    let ctx, canvas = document.createElement("canvas");
     canvas.width = window.innerWidth
     canvas.height = window.innerHeight
     ctx = canvas.getContext('2d');
     document.body.insertBefore(canvas, document.body.childNodes[0]);
-    window.addEventListener('keydown', (e) => Key.onKeydown(e));
-    window.addEventListener('keyup', (e) => Key.onKeyup(e));
 
     function run() {
         ctx.clearRect(0, 0, canvas.width, canvas.height);
@@ -32,19 +18,20 @@ function init() {
 
     // -------------------------------------------------------------------
     let gstate = 1;
-    let intro = new Intro();
-    let score = new Score();
-    let bar = new Bar();
+    let key = new Key(controls);
+    let intro = new Intro(ctx);
+    let score = new Score(ctx);
+    let bar = new Bar(ctx, key);
 
-    function joy_fire() {
+    function controls(e) {
         switch (gstate) {
             case 0: // Waiting to start
-                newGame();
+                if (e.code=='Space') newGame();
                 break;
             case 1: // Playing...
                 break;
             case 2: // Game Over
-                newGame();
+                if (e.code=='Space') newGame();
                 break;
         }
     }
@@ -72,100 +59,8 @@ function init() {
     run();
 }
 
-class Intro {
-    constructor() {
-        this.x = canvas.width;
-        this.y = canvas.height / 2 - 48;
-    }
-    update() {
-        this.centerText('BreakOut', this.y, '48px', 'Consolas', 'Black');
-        this.centerText('JDG', this.y + 50, '24px', 'Consolas', 'Black');
-    }
-    centerText(txt, y, s, f, c) {
-        ctx.font = s + ' ' + f;
-        ctx.fillStyle = 'Black';
-        let x = (canvas.width - ctx.measureText(txt).width) / 2;
-        ctx.fillText(txt, x, y);
-    }
-}
-
-class Bar {
-    constructor() {
-        this.w = 100;
-        this.h = 20;
-        this.speed = 10;    // Target Speed
-        this._speed = 0;    // Current Speed and direction
-
-        this.xLimit = (canvas.width - this.w);
-        this.reset();
-    }
-    reset() {
-        this.x = (canvas.width - this.w) / 2;
-        this.y = (canvas.height - this.h * 2);
-
-        this._y = canvas.height + 10;
-    }
-    update() {
-        this.move();
-        this.draw();
-    }
-    stop() {
-        this._speed = 0;
-    }
-    left() {
-        if (this._speed >= 0) this._speed = -this.speed;
-        this.x += this._speed;
-        if (this.x < 0) this.x = 0;
-        this._speed -= 0.5;
-    }
-    right() {
-        if (this._speed <= 0) this._speed = this.speed;
-        this.x += this._speed;
-        if (this.x > this.xLimit) this.x = this.xLimit;
-        this._speed += 0.5;
-    }
-    move() {
-        if (Key.isDown('ArrowLeft')) this.left();
-        else
-            if (Key.isDown('ArrowRight')) this.right();
-            else
-                this.stop();
-    }
 
 
-    draw() {
-        if (this._y != this.y) this._y--;
-        if (this._y < canvas.height) {
-            ctx.fillStyle = 'black';
-            ctx.fillRect(this.x, this._y, this.w, this.h);
-        }
-    }
-}
-
-class Score {
-    constructor() {
-        this.reset();
-
-        ctx.font = "30px Consolas";
-        let m = ctx.measureText('Score: 00000');
-        this.x = canvas.width - m.width;
-        this.y = -10;
-    }
-    reset() {
-        this.points = 0;
-    }
-    add(x) {
-        this.points += x;
-    }
-    update() {
-        if (this.y != 30) this.y++;
-        if (this.y > 0) {
-            ctx.font = "30px Consolas";
-            ctx.fillStyle = 'Black';
-            ctx.fillText('Score: ' + this.points, this.x, this.y);
-        }
-    }
-}
 
 class ball {
     constructor(x, y, speed, angle) {
@@ -183,15 +78,15 @@ class ball {
     }
 
     draw() {
-        ctx.fillStyle = this.color;
-        ctx.fillRect(this.x, this.y, this.size, this.size);
+        this.ctx.fillStyle = this.color;
+        this.ctx.fillRect(this.x, this.y, this.size, this.size);
     }
 
     move() {
         this.x += this.speed * Math.cos(this.angle);
         this.y += this.speed * Math.sin(this.angle);
 
-        if (this.x < 0 || this.x > canvas.width || this.y < 0 || this.y > canvas.height)
+        if (this.x < 0 || this.x > this.ctx.canvas.width || this.y < 0 || this.y > this.ctx.canvas.height)
             this.bounce();
     }