Uploaded all JS files

breakout_5.js

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+// JAVASCRIPT-5: SHOWING BRICKS
+// © 2018, wbamberg
+var canvas = document.getElementById("myCanvas");
+var ctx = canvas.getContext("2d");
+var ballRadius = 12;
+var x = ballRadius;
+var y = ballRadius;
+var dx = 2;
+var dy = -2;
+var paddleHeight = 100;
+var paddleWidth = 12;
+var paddleY = (canvas.height-paddleHeight)/2;
+var downPressed = false;
+var upPressed = false;
+var brickRowCount = 5;
+var brickColumnCount = 4;
+var brickWidth = 25;
+var brickHeight = 60;
+var brickPadding = 10;
+var brickOffsetTop = 30;
+var brickOffsetLeft = 400;
+var bricks = [];
+for(var c=0; c<brickColumnCount; c++) {
+    bricks[c] = [];
+    for(var r=0; r<brickRowCount; r++) {
+        bricks[c][r] = { x: 0, y: 0 };
+    }
+}
+
+function keyDownHandler(e) {
+    if(e.key == "Down" || e.key == "ArrowDown") {
+        downPressed = true;
+    }
+    else if(e.key == "Up" || e.key == "ArrowUp") {
+        upPressed = true;
+    }
+}
+
+function keyUpHandler(e) {
+    if(e.key == "Down" || e.key == "ArrowDown") {
+        downPressed = false;
+    }
+    else if(e.key == "Up" || e.key == "ArrowUp") {
+        upPressed = false;
+    }
+}
+
+function drawBall() {
+    ctx.beginPath();
+    ctx.arc(x, y, ballRadius, 0, 2 * Math.PI);
+    ctx.fillStyle = "#FF0000";
+    ctx.fill();
+    ctx.closePath();
+}
+function drawPaddle() {
+    ctx.beginPath();
+    ctx.rect(0, paddleY, paddleWidth, paddleHeight);
+    ctx.fillStyle = "#333";
+    ctx.fill();
+    ctx.closePath();
+}
+
+function drawBricks() {
+    for(var c=0; c<brickColumnCount; c++) {
+        for(var r=0; r<brickRowCount; r++) {
+            var brickX = (c*(brickWidth+brickPadding))+brickOffsetLeft;
+            var brickY = (r*(brickHeight+brickPadding))+brickOffsetTop;
+            bricks[c][r].x = brickX;
+            bricks[c][r].y = brickY;
+            ctx.beginPath();
+            ctx.rect(brickX, brickY, brickWidth, brickHeight);
+            ctx.fillStyle = "#0095DD";
+            ctx.fill();
+            ctx.closePath();
+        }
+    }
+}
+
+function draw() {
+    ctx.clearRect(0, 0, canvas.width, canvas.height);
+    drawBall();
+    drawPaddle();
+    drawBricks();
+    
+    if(x + dx > canvas.width-ballRadius) {
+        dx = -dx;
+    }
+    else if (x + dx < ballRadius) {
+        if (y > paddleY && y < paddleY + paddleHeight) {
+            dx = -dx;
+        }
+        else {
+            alert("GAME OVER");
+            document.location.reload();
+            clearInterval(interval);
+        }
+    }
+    if(y + dy > canvas.height-ballRadius || y + dy < ballRadius) {
+        dy = -dy;
+    }
+    if(downPressed && paddleY < canvas.height-paddleHeight) {
+        paddleY += 4;
+    }
+    else if(upPressed && paddleY > 4) {
+        paddleY -= 4;
+    }
+    
+    x += dx;
+    y += dy;
+}
+
+document.addEventListener("keydown", keyDownHandler, false);
+document.addEventListener("keyup", keyUpHandler, false);
+var interval = setInterval(draw, 10);