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404copy.html
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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>404 Page Not Found</title>
<img src="PwC.png" id="logo">
<link href='http://fonts.googleapis.com/css?family=VT323' rel='stylesheet' type='text/css'>
<script src=jquery.js></script>
<style>
canvas {
z-index: 5;
display: block;
position: absolute;
margin: auto;
top: 0;
bottom: 0;
right: 0;
left: 0;
overflow: hidden;
}
#logo{
display: none;
}
#text404{
z-index: 15;
width: 100%;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
#overlay{
z-index: 10;
position: absolute;
width: 100%;
height: 100%;
opacity: 0.65;
background-color: white;
top: 0;
left: 0;
}
</style>
</head>
<body>
<header>
<div id="overlay"></div>
<div id="text404">
<p style="font-size:500px; font-family:'VT323'; color:#777777; text-align:center; margin-top:-100px; margin-bottom:-50px;">404</p>
<h1 style="color:#777777; font-family: 'VT323'; text-align:center; margin-top:40px;">We couldn’t find the page you were looking for - maybe help this snake find it’s food instead?</h1>
<br>
<p style="color:#777777; font-family: 'VT323'; text-align:center; font-size: 30px;">Insert a coin and use the arrows on your keyboard to start playing.</p>
</div>
</header>
<script>
var
//Constants
COLS = 60,
EMPTY = 0,
SNAKE = 1,
FRUIT = 2,
LEFT = 0,
UP = 1,
RIGHT = 2,
DOWN = 3,
KEY_LEFT = 37,
KEY_UP = 38,
KEY_RIGHT = 39,
KEY_DOWN = 40,
KEY_A = 65,
KEY_W = 87,
KEY_D = 68,
KEY_S = 83,
//Game objects
canvas,
ctx,
keystate,
frames,
score,
highscore,
// @type {Object}
grid = {
width: null,
height: null,
_grid: null,
init: function(d, c, r) {
this.width = c;
this.height = r;
this._grid = [];
for (var x=0; x < c; x++) {
this._grid.push([]);
for (var y=0; y < r; y++) {
this._grid[x].push(d);
}
}
},
set: function(val, x, y) {
this._grid[x][y] = val;
},
/**
* Get the value of the cell at (x, y)
*
* @param {number} x the x-coordinate
* @param {number} y the y-coordinate
* @return {any} the value at the cell
*/
get: function(x, y) {
return this._grid[x][y];
}
}
/**
* The snake, works as a queue (FIFO, first in first out) of data
* with all the current positions in the grid with the snake id
*
* @type {Object}
*/
snake = {
direction: null, /* number, the direction */
last: null, /* Object, pointer to the last element in
the queue */
_queue: null, /* Array<number>, data representation*/
/**
* Clears the queue and sets the start position and direction
*
* @param {number} d start direction
* @param {number} x start x-coordinate
* @param {number} y start y-coordinate
*/
init: function(d, x, y) {
this.direction = d;
this._queue = [];
this.insert(x, y);
},
/**
* Adds an element to the queue
*
* @param {number} x x-coordinate
* @param {number} y y-coordinate
*/
insert: function(x, y) {
// unshift prepends an element to an array
this._queue.unshift({x:x, y:y});
this.last = this._queue[0];
},
/**
* Removes and returns the first element in the queue.
*
* @return {Object} the first element
*/
remove: function() {
// pop returns the last element of an array
return this._queue.pop();
}
};
/**
* Set a food id at a random free cell in the grid
*/
function setFood() {
var empty = [];
// iterate through the grid and find all empty cells
for (var x=0; x < grid.width; x++) {
for (var y=0; y < grid.height; y++) {
if (grid.get(x, y) === EMPTY) {
empty.push({x:x, y:y});
}
}
}
// chooses a random cell
var randpos = empty[Math.round(Math.random()*(empty.length - 1))];
grid.set(FRUIT, randpos.x, randpos.y);
}
/**
* Starts the game
*/
function main() {
// create and initiate the canvas element
canvas = document.createElement("canvas");
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
ctx = canvas.getContext("2d");
// add the canvas element to the body of the document
document.body.appendChild(canvas);
// sets an base font for bigger score display
ctx.font = " 40px VT323";
frames = 0;
keystate = {};
// keeps track of the keybourd input
document.addEventListener("keydown", function(evt) {
keystate[evt.keyCode] = true;
});
document.addEventListener("keyup", function(evt) {
delete keystate[evt.keyCode];
});
// intitiate game objects and starts the game loop
init();
loop();
}
function getRatio(){
console.log(window.innerHeight);
console.log(window.innerWidth);
return window.innerHeight/window.innerWidth;
}
/**
* Resets and inits game objects
*/
function init() {
score = 0;
if (typeof highscore == 'undefined'){
highscore=0;
}
rows = Math.floor(COLS * getRatio())
grid.init(EMPTY, COLS, rows);
var sp = {x:Math.floor(COLS/2), y:rows-1};
snake.init(UP, sp.x, sp.y);
grid.set(SNAKE, sp.x, sp.y);
setFood();
}
/**
* The game loop function, used for game updates and rendering
*/
function hideText(){
$('#text404').remove();
$('#overlay').remove();
}
function loop() {
update();
draw();
// When ready to redraw the canvas call the loop function
// first. Runs about 60 frames a second
window.requestAnimationFrame(loop, canvas);
}
/**
* Updates the game logic
*/
function update() {
frames++;
// changing direction of the snake depending on which keys
// that are pressed
if (keystate[KEY_LEFT] && snake.direction !== RIGHT) {
snake.direction = LEFT;
hideText();
}
if (keystate[KEY_UP] && snake.direction !== DOWN) {
snake.direction = UP;
hideText();
}
if (keystate[KEY_RIGHT] && snake.direction !== LEFT) {
snake.direction = RIGHT;
hideText();
}
if (keystate[KEY_DOWN] && snake.direction !== UP) {
snake.direction = DOWN;
hideText();
}
// each five frames update the game state.
if (frames%5 === 0) {
// pop the last element from the snake queue i.e. the
// head
var nx = snake.last.x;
var ny = snake.last.y;
// updates the position depending on the snake direction
switch (snake.direction) {
case LEFT:
nx--;
break;
case UP:
ny--;
break;
case RIGHT:
nx++;
break;
case DOWN:
ny++;
break;
}
// checks all gameover conditions
if (0 > nx || nx > grid.width-1 ||
0 > ny || ny > grid.height-1 ||
grid.get(nx, ny) === SNAKE
) {
highscore_calc (score);
return init();
}
//High score
function highscore_calc (score) {
if( score > highscore){
highscore = score;
}
}
if (grid.get(nx, ny) === FRUIT) {
score++;
setFood();
} else {
var tail = snake.remove();
grid.set(EMPTY, tail.x, tail.y);
}
grid.set(SNAKE, nx, ny);
snake.insert(nx, ny);
}
}
function draw() {
// calculate tile-width and -height
var tw = canvas.width/grid.width;
var th = canvas.height/grid.height;
// iterate through the grid and draw all cells
for (var x=0; x < grid.width; x++) {
for (var y=0; y < grid.height; y++) {
// sets the fillstyle depending on the id of
// each cell
switch (grid.get(x, y)) {
case EMPTY:
ctx.fillStyle = "#fff";
break;
case SNAKE:
ctx.fillStyle = "#ff7c16";
break;
case FRUIT:
break;
}
if (grid.get(x, y) == FRUIT) {
var img=document.getElementById("logo");
//ctx.fillRect(x*tw, y*th, tw, th);
ctx.drawImage(img,x*tw, y*th, tw, th);
}
else {
ctx.fillRect(x*tw, y*th, tw, th);
};
}
}
// changes the fillstyle once more and draws the score
// message to the canvas
ctx.fillStyle = "#777777";
ctx.fillText("SCORE: " + score, 10, canvas.height-10);
ctx.fillText("HIGHSCORE: " + highscore, 200, canvas.height-10);
}
// start and run the game
main();
</script>
</body>
</html>