spheppner/flappyrect.html

## flappyrect.html
<!DOCTYPE html>
<html>
<head>
<title>Flappy Rectangle</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<style>
canvas {
    border:1px solid #d3d3d3;
    background-color: #f1f1f1;
}
</style>
</head>
<body onload="startGame()">
<script>

var myGamePiece;
var myObstacles = [];
var myScore;
var t = document.createTextNode("Flappy Rectangle");
var br = document.createElement("br");

function makeRandomColor(){
	z = Math.random()
	if (z < 0.2) {
		return "green";
	}
	else if (z < 0.4) {
		return "blue";
	}
	else if (z < 0.6) {
		return "black"
	}
	else if (z < 0.8) {
		return "pink"
	}
	else if (z < 1.0) {
		return "#09E509"
	}
	else {
		return "yellow"
	}
}
function startGame() {
	// doument.body.appendChild(t);
	document.body.insertBefore(t, document.body.childNodes[0]);
	document.body.insertBefore(br, document.body.childNodes[1]);
    myGamePiece = new component(30, 30, makeRandomColor(), 20, 120);
    myGamePiece.gravity = 0.05;
    myScore = new component("30px", "Consolas", "black", 280, 40, "text");
    myGameArea.start();
}

var myGameArea = {
    canvas : document.createElement("canvas"),
    start : function() {
        this.canvas.width = 480;
        this.canvas.height = 270;
        this.context = this.canvas.getContext("2d");
        document.body.insertBefore(this.canvas, document.body.childNodes[2]);
        this.frameNo = 0;
        this.interval = setInterval(updateGameArea, 20);
        },
    clear : function() {
        this.context.clearRect(0, 0, this.canvas.width, this.canvas.height);
    }
}

function component(width, height, color, x, y, type) {
    this.type = type;
    this.score = 0;
    this.width = width;
    this.height = height;
    this.speedX = 0;
    this.speedY = 0;
    this.delta = -1
    this.x = x;
    this.y = y;
    this.gravity = 0;
    this.gravitySpeed = 0;
    this.update = function() {
        ctx = myGameArea.context;
        if (this.type == "text") {
            ctx.font = this.width + " " + this.height;
            ctx.fillStyle = color;
            ctx.fillText(this.text, this.x, this.y);
        } else {
            ctx.fillStyle = color;
            ctx.fillRect(this.x, this.y, this.width, this.height);
        }
    }
    this.wobble = function() {
		this.width += this.delta
		this.height += this.delta
		ctx.fillStyle = color;
        ctx.fillRect(this.x, this.y, this.width, this.height);
		if (this.width > 30) {
			this.width = 30;
			this.height = 30;
			delta = -1
		}
		if (this.width < 5) {
			this.width = 5;
			this.height = 5;
			delta = 1;
		}
	}
    this.newPos = function() {
        this.gravitySpeed += this.gravity;
        this.x += this.speedX;
        this.y += this.speedY + this.gravitySpeed;
        if (this.y < 0) {
			this.y = 0
		}
        this.hitBottom();
    }
    this.hitBottom = function() {
        var rockbottom = myGameArea.canvas.height - this.height;
        if (this.y > rockbottom) {
            this.y = rockbottom;
            this.gravitySpeed = 0;
        }
    }
    this.crashWith = function(otherobj) {
        var myleft = this.x;
        var myright = this.x + (this.width);
        var mytop = this.y;
        var mybottom = this.y + (this.height);
        var otherright = otherobj.x + (otherobj.width);
        var otherleft = otherobj.x;
        var othertop = otherobj.y;
        var otherbottom = otherobj.y + (otherobj.height);
        var crash = true;
        if ((mybottom < othertop) || (mytop > otherbottom) || (myright < otherleft) || (myleft > otherright)) {
            crash = false;
        }
        return crash;
    }
}

function updateGameArea() {
    var x, height, gap, minHeight, maxHeight, minGap, maxGap;
    for (i = 0; i < myObstacles.length; i += 1) {
        if (myGamePiece.crashWith(myObstacles[i])) {
            myScore.score -= 1000
            // alert("Hiiiii")
            if (myScore.score < -10000) return;
        }
    }
    myGameArea.clear();
    myGameArea.frameNo += 1;
    if (myGameArea.frameNo == 1 || everyinterval(150)) {
        x = myGameArea.canvas.width;
        minHeight = 20;
        maxHeight = 200;
        height = Math.floor(Math.random()*(maxHeight-minHeight+1)+minHeight);
        minGap = 50;
        maxGap = 200;
        gap = Math.floor(Math.random()*(maxGap-minGap+1)+minGap);
        myObstacles.push(new component(10, height, makeRandomColor(), x, 0));
        myObstacles.push(new component(10, x - height - gap, makeRandomColor(), x, height + gap));
    }
    for (i = 0; i < myObstacles.length; i += 1) {
        myObstacles[i].x += -1;
        myObstacles[i].update();
    }
    myScore.text="SCORE: " + (myGameArea.frameNo + myScore.score);
    myScore.update();
    //myGamePiece.wobble();
    myGamePiece.newPos();
    myGamePiece.update();
}

function everyinterval(n) {
    if ((myGameArea.frameNo / n) % 1 == 0) {return true;}
    return false;
}

function accelerate(n) {
    myGamePiece.gravity = n;
}

function restart() {
	myScore.score = 0;
	myGamePiece.x = 0;
	myGamePiece.y = 100;
}
</script>
<br>
<button onmousedown="accelerate(-0.2)" onmouseup="accelerate(0.05)">Flapp flapp</button>
<button onmousedown="restart">Neustart</button>
<p>Benutze den "Flapp flapp"-Button um in der Luft zu bleiben!</p>
<p>Wie lange &uuml;berlebst du?</p>
<small>taken from: http://www.w3schools.com/graphics/tryit.asp?filename=trygame_default_gravity</small>
</body>
</html>
	<!DOCTYPE html>
	<html>
	<head>
	<title>Flappy Rectangle</title>
	<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
	<style>
	canvas {
	border:1px solid #d3d3d3;
	background-color: #f1f1f1;
	}
	</style>
	</head>
	<body onload="startGame()">
	<script>

	var myGamePiece;
	var myObstacles = [];
	var myScore;
	var t = document.createTextNode("Flappy Rectangle");
	var br = document.createElement("br");

	function makeRandomColor(){
	z = Math.random()
	if (z < 0.2) {
	return "green";
	}
	else if (z < 0.4) {
	return "blue";
	}
	else if (z < 0.6) {
	return "black"
	}
	else if (z < 0.8) {
	return "pink"
	}
	else if (z < 1.0) {
	return "#09E509"
	}
	else {
	return "yellow"
	}
	}
	function startGame() {
	// doument.body.appendChild(t);
	document.body.insertBefore(t, document.body.childNodes[0]);
	document.body.insertBefore(br, document.body.childNodes[1]);
	myGamePiece = new component(30, 30, makeRandomColor(), 20, 120);
	myGamePiece.gravity = 0.05;
	myScore = new component("30px", "Consolas", "black", 280, 40, "text");
	myGameArea.start();
	}

	var myGameArea = {
	canvas : document.createElement("canvas"),
	start : function() {
	this.canvas.width = 480;
	this.canvas.height = 270;
	this.context = this.canvas.getContext("2d");
	document.body.insertBefore(this.canvas, document.body.childNodes[2]);
	this.frameNo = 0;
	this.interval = setInterval(updateGameArea, 20);
	},
	clear : function() {
	this.context.clearRect(0, 0, this.canvas.width, this.canvas.height);
	}
	}

	function component(width, height, color, x, y, type) {
	this.type = type;
	this.score = 0;
	this.width = width;
	this.height = height;
	this.speedX = 0;
	this.speedY = 0;
	this.delta = -1
	this.x = x;
	this.y = y;
	this.gravity = 0;
	this.gravitySpeed = 0;
	this.update = function() {
	ctx = myGameArea.context;
	if (this.type == "text") {
	ctx.font = this.width + " " + this.height;
	ctx.fillStyle = color;
	ctx.fillText(this.text, this.x, this.y);
	} else {
	ctx.fillStyle = color;
	ctx.fillRect(this.x, this.y, this.width, this.height);
	}
	}
	this.wobble = function() {
	this.width += this.delta
	this.height += this.delta
	ctx.fillStyle = color;
	ctx.fillRect(this.x, this.y, this.width, this.height);
	if (this.width > 30) {
	this.width = 30;
	this.height = 30;
	delta = -1
	}
	if (this.width < 5) {
	this.width = 5;
	this.height = 5;
	delta = 1;
	}
	}
	this.newPos = function() {
	this.gravitySpeed += this.gravity;
	this.x += this.speedX;
	this.y += this.speedY + this.gravitySpeed;
	if (this.y < 0) {
	this.y = 0
	}
	this.hitBottom();
	}
	this.hitBottom = function() {
	var rockbottom = myGameArea.canvas.height - this.height;
	if (this.y > rockbottom) {
	this.y = rockbottom;
	this.gravitySpeed = 0;
	}
	}
	this.crashWith = function(otherobj) {
	var myleft = this.x;
	var myright = this.x + (this.width);
	var mytop = this.y;
	var mybottom = this.y + (this.height);
	var otherright = otherobj.x + (otherobj.width);
	var otherleft = otherobj.x;
	var othertop = otherobj.y;
	var otherbottom = otherobj.y + (otherobj.height);
	var crash = true;
	if ((mybottom < othertop) \|\| (mytop > otherbottom) \|\| (myright < otherleft) \|\| (myleft > otherright)) {
	crash = false;
	}
	return crash;
	}
	}

	function updateGameArea() {
	var x, height, gap, minHeight, maxHeight, minGap, maxGap;
	for (i = 0; i < myObstacles.length; i += 1) {
	if (myGamePiece.crashWith(myObstacles[i])) {
	myScore.score -= 1000
	// alert("Hiiiii")
	if (myScore.score < -10000) return;
	}
	}
	myGameArea.clear();
	myGameArea.frameNo += 1;
	if (myGameArea.frameNo == 1 \|\| everyinterval(150)) {
	x = myGameArea.canvas.width;
	minHeight = 20;
	maxHeight = 200;
	height = Math.floor(Math.random()*(maxHeight-minHeight+1)+minHeight);
	minGap = 50;
	maxGap = 200;
	gap = Math.floor(Math.random()*(maxGap-minGap+1)+minGap);
	myObstacles.push(new component(10, height, makeRandomColor(), x, 0));
	myObstacles.push(new component(10, x - height - gap, makeRandomColor(), x, height + gap));
	}
	for (i = 0; i < myObstacles.length; i += 1) {
	myObstacles[i].x += -1;
	myObstacles[i].update();
	}
	myScore.text="SCORE: " + (myGameArea.frameNo + myScore.score);
	myScore.update();
	//myGamePiece.wobble();
	myGamePiece.newPos();
	myGamePiece.update();
	}

	function everyinterval(n) {
	if ((myGameArea.frameNo / n) % 1 == 0) {return true;}
	return false;
	}

	function accelerate(n) {
	myGamePiece.gravity = n;
	}

	function restart() {
	myScore.score = 0;
	myGamePiece.x = 0;
	myGamePiece.y = 100;
	}
	</script>
	<br>
	<button onmousedown="accelerate(-0.2)" onmouseup="accelerate(0.05)">Flapp flapp</button>
	<button onmousedown="restart">Neustart</button>
	<p>Benutze den "Flapp flapp"-Button um in der Luft zu bleiben!</p>
	<p>Wie lange überlebst du?</p>
	<small>taken from: http://www.w3schools.com/graphics/tryit.asp?filename=trygame_default_gravity</small>
	</body>
	</html>