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index.html
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<!DOCTYPE html>
<head>
<title>A maze game</title>
<style>
* {
font-family:'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
body {
min-height: 90vh;
}
button {
font-size: 1.2em;
}
#configure-menu {
display: none;
position: absolute;
top: 135px;
left: 50%;
transform: translateX(-50%);
z-index: 10000;
padding: 20px 50px 75px 50px;
background-color: rgb(94, 73, 104);
border-radius: 30px;
color: lightgray;
}
#configure-menu > div {
display: flex;
flex-direction: column;
justify-content: space-between;
gap: 30px;
}
#configure-menu > div > div:first-of-type {
display: flex;
justify-content: space-between;
flex-direction: row;
gap: 20px;
}
.dropdown-menu-arrow {
position: absolute;
top: 0;
left: 50%;
transform: translate3d(-50%, -100%, 0);
}
#close-configure-menu-btn {
position: absolute;
top: 20px;
right: 20px;
}
#close-configure-menu-btn:hover {
cursor: pointer;
}
#close-configure-menu-btn > #b {
display:none;
}
#generate-maze-btn {
margin-top: 30px;
}
#generate-maze-btn, #configure-btn {
padding: 10px 30px 10px 30px;
background-color: rgb(94, 49, 94);
color: lightgray;
border: none;
border-radius: 20px;
}
#up, #down, #left, #right {
display: none;
background-color: rgba(32, 32, 32, 0.76);
font-size: calc(1em + 2vh);
color: white;
}
#up {
left: 50%;
top: 95%;
transform: translate3d(-50%, -220%, 0);
}
#down {
left: 50%;
top: 95%;
transform: translate3d(-50%, -100%, 0);
}
#left {
left: 22%;
top: 95%;
transform: translate3d(-110%, -100%, 0);
}
#right {
left: 78%;
top: 95%;
transform: translate3d(10%, -100%, 0);
}
#canvaswrapper {
position: relative;
left: 50%;
transform: translateX(-50%);
z-index: 3;
}
#maze, #maze-overlay {
position: absolute;
left: 50%;
top: 0px;
transform: translateX(-50%);
margin-bottom: 50%;
}
@media only screen and (max-width: 1500px) {
#close-configure-menu-btn > #a {
display: none;
}
#close-configure-menu-btn > #b {
display: block;
}
#configure-menu {
top: 0;
min-width: 100vw;
min-height:100vh;
padding-top: 50px;
}
#configure-menu > div:first-of-type {
top: 50px;
right: 50px;
}
#configure-menu > div:last-of-type {
font-size: 3em;
position: absolute;
left:50%;
transform: translateX(-50%);
}
#configure-menu > div > div:first-of-type {
justify-content: space-around;
}
#width #height {
font-size: 3em;
}
button {
font-size: 50px;
width: 80vw;
}
#up, #down, #left, #right {
display: block;
}
}
</style>
</head>
<body style="background-color: rgb(27, 18, 29);">
<div id="configure-menu">
<svg height="15" width="40" class="dropdown-menu-arrow">
<polygon points="20,0 21,0 22,0 23,1 24,1 25,3 26,4 40,15 0,15 16,1 15,3 14,4 17,1 18,0 19,0" fill="rgb(94, 73, 104)"/>
</svg>
<div id="close-configure-menu-btn" ontouch="document.getElementById('configure-menu').style.display = 'none'" onclick="document.getElementById('configure-menu').style.display = 'none'">
<svg id="a" width="10" height="10">
<line x1="0" y1="0" x2="10" y2="10" stroke="lightgray" />
<line x1="0" y1="10" x2="10" y2="0" stroke="lightgray" />
</svg>
<svg id="b" width="50" height="50">
<line x1="0" y1="0" x2="50" y2="50" stroke="lightgray" stroke-width="3" />
<line x1="0" y1="50" x2="50" y2="0" stroke="lightgray" stroke-width="3" />
</svg>
</div>
<div>
<h3 style="border-bottom-style: solid; border-bottom-width: 1px; margin-bottom: 0;">Configuration Menu</h3>
<div>
<span><p style="color: rgb(211, 211, 211); margin: 5px 5px 5px 2px;">Width:</p><input type="number" id="width" name="width" value="30" min="5" max="100"></span>
<span><p style="color: lightgray; margin: 5px 5px 5px 2px;">Height:</p><input type="number" id="height" name="height" value="30" min="5" max="100"></span>
</div>
<div>
<input type="number" id="speed" name="speed" value="1.0" min="0.5" max="2.0" step="0.1" />
<label for="coins">speed multiplier</label>
</div>
<div>
<input type="checkbox" id="coins" name="coins" />
<label for="coins">enable coins</label>
</div>
<div>
<input type="checkbox" id="flashlight" name="flashlight" />
<label for="flashlight">enable flashlight</label>
</div>
<button id="generate-maze-btn" ontouch="start()" onclick="start()">Generate/Start</button>
</div>
</div>
<div style="text-align: center;">
<h1 style="color: lightgray;">THE MAZE GAME</h1>
<button id="configure-btn" ontouch="document.getElementById('configure-menu').style.display = 'block'" onclick="document.getElementById('configure-menu').style.display = 'block'">Configure Maze</button>
<div id="flexbox" style="display: flexbox; justify-content: space-evenly; margin-left: auto; margin-right: auto;">
</div>
<br>
<hr>
<br><br><br>
<p id="timer" style="position: relative; width: 50%; margin-left: 25%; margin-right: 25%; font-family: 'Roboto', sans-serif; color: lightgray; text-align: center; z-index: 4;">0H 0m 0s</p>
<div id="canvaswrapper">
<canvas id="maze" style="z-index: 2;"></canvas>
<canvas id="maze-overlay" style="display: none; z-index: 3;"></canvas>
</div>
<canvas id="fireworks" width="100%" height="100%" style="display: none; position: absolute; top: 0; left: 0; z-index: 1;"></canvas>
</div>
<button id="left" style="position: fixed; width: 15%; height: 22%; z-index: 5;">◄</button>
<button id="right" style="position: fixed; width: 15%; height: 22%; z-index: 5;">►</button>
<button id="up" style="position: fixed; width: 50%; height: 10%; z-index: 5;">▲</button>
<button id="down" style="position: fixed; width: 50%; height: 10%; z-index: 5;">▼</button>
<script>
function shuffle(array) {
let currentIndex = array.length, randomIndex;
// While there remain elements to shuffle.
while (currentIndex != 0) {
// Pick a remaining element.
randomIndex = Math.floor(Math.random() * currentIndex);
currentIndex--;
// And swap it with the current element.
[array[currentIndex], array[randomIndex]] = [
array[randomIndex], array[currentIndex]];
}
return array;
}
function start() {
document.getElementById('configure-btn').disabled = true;
document.getElementById('generate-maze-btn').disabled = true;
document.getElementById('configure-menu').style.display = 'none';
//TODO FLASHLIGHT
//TODO DIFFERENT ALGOS
const tileSize = 25;
const coinAmount = Math.round(Math.random() * 3) + 3;
let width = 0;
let height = 0;
const canvas = document.getElementById("maze");
const context = canvas.getContext("2d");
const overlay = document.getElementById("maze-overlay");
const ctxOverlay = overlay.getContext("2d");
width = parseInt(document.getElementById('width').value);
height = parseInt(document.getElementById('height').value);
let upPressed = false;
let rightPressed = false;
let downPressed = false;
let leftPressed = false;
setup_listeners();
canvas.width = width * tileSize;
canvas.height = height * tileSize;
overlay.width = width * tileSize;
overlay.height = height * tileSize;
let player = new Player(0.03 * parseFloat(document.getElementById('speed').value));
let exit = null;
let grid = [];
let cells = [];
let coins = [];
/* FILL GRID */
for (let y = 0; y < height; y++) {
for (let x = 0; x < width; x++) {
var cell = new Cell(x, y);
if (x > 0) {
let neighbour = grid[index(x-1,y)];
neighbour.neighbours[1] = cell;
cell.neighbours[3] = neighbour;
}
if (y > 0) {
let neighbour = grid[index(x,y-1)];
neighbour.neighbours[2] = cell;
cell.neighbours[0] = neighbour;
}
grid.push(cell);
cells.push(cell);
}
}
if (document.getElementById('coins').checked) {
shuffle(cells);
for (let i = 0; i < coinAmount; i++) {
/**** SPAWN COINS ****/
let coin = new Coin();
coin.cell = cells[i];
cells[i].coin = coin;
coins.push(coin);
}
}
/******* GENERATE MAZE *******/
shuffle(cells);
cells[0].visited = true;
cells = cells.filter((cell) => {return !cell.visited});
while (cells.length > 0) {
let current_cell = cells[0];
let new_path = [current_cell];
while (current_cell && !current_cell.visited) {
current_cell.visited = true;
let next = current_cell.getRandomNeighbourNotInPath(new_path);
if (next) {
new_path.push(next);
}
current_cell = next;
}
cells = cells.filter((cell) => {return !cell.visited});
}
/****** MAIN LOOP ******/
let draw_queue = [];
/* add all cells and the player to the draw queue so they get drawn the first iteration */
for (let i = 0; i < grid.length; i++) {
draw_queue.push(grid[i]);
}
draw_queue.push(player);
// TODO MAIN LOOP
let startTime = Date.now();
player.last_loop = startTime;
function main_loop() {
update_timer();
let directions = [upPressed, rightPressed, downPressed, leftPressed];
if (directions.includes(true)) {
player.occupiesCells().forEach((cell) => {draw_queue.push(cell)});
player.move(directions);
coins = coins.filter((coin) => {
if (coin.intersects(player)) {
coin.cell.coin = null;
draw_queue.push(coin.cell);
return false;
}
return true;
});
draw_queue.push(player);
}
if (!exit && coins.length == 0) {
exit = new Exit();
exit.initialize();
draw_queue.push(exit);
}
/* redraw all items in draw_queue */
while (draw_queue.length > 0) {
draw_queue.shift().draw();
}
player.last_loop = Date.now();
if (!exit || !exit.intersects(player)) {
setTimeout(main_loop, 100);
} else {
document.getElementById('fireworks').style.display = 'block';
startFireworks();
}
}
main_loop();
/*
==============================================
Objects and object methods below
==============================================
*/
function index(x, y) {
return y * height + x;
}
function Cell(x, y) {
this.self = this;
this.x = x;
this.y = y;
this.visited = false;
this.parent = null;
this.neighbours = [null, null, null, null];
this.walls = [true, true, true, true];
this.coin = null;
this.hasUnvisitedNeighbour = function() {
for (let i = 0; i < this.neighbours.length; i++) {
let n = this.neighbours[i];
if (n && !n.visited) return true;
}
return false;
}
this.getRandomUnvisitedNeighbour = function() {
if (!this.hasUnvisitedNeighbour()) {
return null;
}
var possible_neighbours = [];
for (let i = 0; i < this.neighbours.length; i++) {
let n = this.neighbours[i];
if (n && !n.visited) possible_neighbours.push(n);
}
let random = Math.round(Math.random() * (possible_neighbours.length - 1));
let chosen = possible_neighbours[random];
for (let i = 0; i < 4; i++) {
if (this.neighbours[i] === chosen) {
this.walls[i] = false;
chosen.walls[(i+2)%4] = false;
}
}
return chosen;
}
this.getRandomNeighbourNotInPath = function(path) {
var possible_neighbours = [];
for (let i = 0; i < this.neighbours.length; i++) {
let n = this.neighbours[i];
if (n && !path.includes(n)) possible_neighbours.push(n);
}
if (possible_neighbours.length == 0) return this.parent.getRandomNeighbourNotInPath(path);
let random = Math.round(Math.random() * (possible_neighbours.length - 1));
let chosen = possible_neighbours[random];
for (let i = 0; i < 4; i++) {
if (this.neighbours[i] === chosen) {
this.walls[i] = false;
chosen.walls[(i+2)%4] = false;
}
}
chosen.parent = this;
return chosen;
}
this.draw = function() {
context.fillStyle = "rgb(81, 66, 83)";
context.fillRect(this.x * tileSize, this.y * tileSize, tileSize, tileSize);
context.fillStyle = "#000000"
if (this.walls[0]) {
context.moveTo(this.x * tileSize, this.y * tileSize);
context.lineTo(this.x * tileSize + tileSize, this.y * tileSize);
context.stroke();
}
if (this.walls[1]) {
context.moveTo(this.x * tileSize + tileSize, this.y * tileSize);
context.lineTo(this.x * tileSize + tileSize, this.y * tileSize + tileSize);
context.stroke();
}
if (this.walls[2]) {
context.moveTo(this.x * tileSize, this.y * tileSize + tileSize);
context.lineTo(this.x * tileSize + tileSize, this.y * tileSize + tileSize);
context.stroke();
}
if (this.walls[3]) {
context.moveTo(this.x * tileSize, this.y * tileSize);
context.lineTo(this.x * tileSize, this.y * tileSize + tileSize);
context.stroke();
}
if (this.coin) this.coin.draw();
}
}
function Coin() {
this.cell = null;
this.draw = function() {
let x = this.cell.x * tileSize + Math.round((tileSize - 5) / 2);
let y = this.cell.y * tileSize + Math.round((tileSize - 9) / 2);
context.fillStyle = "#FFD300";
context.fillRect(x,y+2,5,5);
context.fillRect(x+1,y,3,9);
}
this.intersects = function(player) {
/* Used to test whether something (mainly player) intersects this object */
let x = this.cell.x * tileSize + Math.round((tileSize - 5) / 2);
let y = this.cell.y * tileSize + Math.round((tileSize - 9) / 2);
return boxIntersect(x,y,9,5,player.x,player.y,player.height,player.width);
}
}
function Player(spd) {
this.x = 9.0;
this.y = Math.floor(height/2)*tileSize+9.0;
this.speed = spd;
this.last_loop = Date.now();
this.width = 7;
this.height = 7;
this.draw = function() {
let occupiedCells = this.occupiesCells();
for (let i = 0; i < occupiedCells.length; i++) {
occupiedCells[i].draw();
}
context.fillStyle = "#FF0000";
context.fillRect(Math.round(this.x), Math.round(this.y), this.width, this.height);
if (document.getElementById('flashlight').checked)
drawLight(ctxOverlay, Math.round(this.x+3), Math.round(this.y+3), 40);
}
this.occupiesCells = function() {
let cs = [];
let is = [index(Math.floor(this.x/tileSize), Math.floor(this.y/tileSize)),
index(Math.floor((this.x+this.width)/tileSize), Math.floor(this.y/tileSize)),
index(Math.floor(this.x/tileSize), Math.floor((this.y+this.height)/tileSize)),
index(Math.floor((this.x+this.width)/tileSize), Math.floor((this.y+this.height)/tileSize))];
for (let x = 0; x < is.length; x++) {
let i = is[x];
if (!cs.includes(grid[i])) cs.push(grid[i]);
}
return cs;
}
this.move = function(directions) {
/* This function moves the player based on a array[4] with the directions */
let now = Date.now();
let diff = now - this.last_loop;
if (directions[0]) {
this.y -= this.speed * diff;
}
if (directions[2]) {
this.y += this.speed * diff;
}
if (directions[3]) {
this.x -= this.speed * diff;
}
if (directions[1]) {
this.x += this.speed * diff;
}
}
}
function Exit(x, y, side) {
this.x = x;
this.y = y;
this.side = side;
this.initialize = function() {
this.side = Math.floor(Math.random() * 3);
let h = Math.round(Math.random() * (width-1));
let v = Math.round(Math.random() * (height-1));
if (side === 0) {
this.x = h;
this.y = 0;
} else if (side === 2) {
this.x = h;
this.y = height-1;
} else {
this.x = width-1;
this.y = v;
}
}
this.draw = function() {
let px = this.x*tileSize;
let py = this.y*tileSize;
if (this.side === 0) {
py -= 13;
} else if (this.side === 2) {
py += 13;
} else {
px += 13;
}
drawEllipse(context, px, py, 25, 25);
}
this.intersects = function(player) {
/* Used to test whether something (mainly player) intersects with this object */
// if (this.side == 0) {
// return boxIntersect(this.x*tileSize+3,0,13,19,player.x,player.y,player.height,player.width);
// } else if (this.side == 2) {
// return boxIntersect(this.x*tileSize+3,this.y*tileSize+12,13,19,player.x,player.y,player.height,player.width);
// } else {
// return boxIntersect(this.x*tileSize+12,this.y*tileSize+tileSize+3,19,13,player.x,player.y,player.height,player.width);
// }
return player.occupiesCells().includes(grid[index(this.x,this.y)]);
}
}
function update_timer() {
var difference = Date.now() - startTime;
var millis = difference%1000;
var seconds = Math.floor(difference/1000)%60;
var minutes = Math.floor(difference/60000)%60;
var hours = Math.floor(difference/3600000);
document.getElementById('timer').innerHTML = "" + hours + "H " + minutes + "m " + seconds + "." + millis + "s";
}
function setup_listeners() {
var leftButton = document.getElementById("left");
var rightButton = document.getElementById("right");
var upButton = document.getElementById("up");
var downButton = document.getElementById("down");
leftButton.addEventListener("touchstart", function(ev) {
leftPressed = true;
ev.preventDefault();
}, false);
leftButton.addEventListener('mousedown', () => {
leftPressed = true;
});
leftButton.addEventListener("touchend", function(ev) {
leftPressed = false;
ev.preventDefault();
}, false);
leftButton.addEventListener('mouseup', () => {
leftPressed = false;
});
rightButton.addEventListener("touchstart", function(ev) {
rightPressed = true;
ev.preventDefault();
}, false);
rightButton.addEventListener('mousedown', () => {
rightPressed = true;
});
rightButton.addEventListener("touchend", function(ev) {
rightPressed = false;
ev.preventDefault();
}, false);
rightButton.addEventListener('mouseup', () => {
rightPressed = false;
});
upButton.addEventListener("touchstart", function(ev) {
upPressed = true;
ev.preventDefault();
}, false);
upButton.addEventListener('mousedown', () => {
upPressed = true;
});
upButton.addEventListener("touchend", function(ev) {
upPressed = false;
ev.preventDefault();
}, false);
upButton.addEventListener('mouseup', () => {
upPressed = false;
});
downButton.addEventListener("touchstart", function(ev) {
downPressed = true;
ev.preventDefault();
}, false);
downButton.addEventListener('mousedown', () => {
downPressed = true;
});
downButton.addEventListener("touchend", function(ev) {
downPressed = false;
ev.preventDefault();
}, false);
downButton.addEventListener('mouseup', () => {
downPressed = false;
});
document.addEventListener("keydown", (e) => {
switch (e.keyCode) {
case 38:
case 87: //w
upPressed = true;
break;
case 37:
case 65: //a
leftPressed = true;
break;
case 40:
case 83: //s
downPressed = true;
break;
case 39:
case 68: //d
rightPressed = true;
break;
default:
return; // Do nothing for the rest
};
});
document.addEventListener("keyup", (e) => {
switch (e.keyCode) {
case 38:
case 87: //w
upPressed = false;
break;
case 37:
case 65: //a
leftPressed = false;
break;
case 40:
case 83: //s
downPressed = false;
break;
case 39:
case 68: //d
rightPressed = false;
break;
default:
return; // Do nothing for the rest
};
});
}
function boxIntersect(ax, ay, ah, aw, bx, by, bh, bw) {
return Math.abs((ax + aw/2) - (bx + bw/2)) * 2 < (aw + bw) &&
Math.abs((ay + ah/2) - (by + bh/2)) * 2 < (ah + bh);
}
function drawEllipseByCenter(ctx, cx, cy, w, h, color) {
drawEllipse(ctx, cx - w/2.0, cy - h/2.0, w, h);
}
function drawEllipse(ctx, x, y, w, h) {
var kappa = .5522848,
ox = (w / 2) * kappa, // control point offset horizontal
oy = (h / 2) * kappa, // control point offset vertical
xe = x + w, // x-end
ye = y + h, // y-end
xm = x + w / 2, // x-middle
ym = y + h / 2; // y-middle
ctx.fillStyle = "rgb(250, 227, 152)";
ctx.beginPath();
ctx.moveTo(x, ym);
ctx.bezierCurveTo(x, ym - oy, xm - ox, y, xm, y);
ctx.bezierCurveTo(xm + ox, y, xe, ym - oy, xe, ym);
ctx.bezierCurveTo(xe, ym + oy, xm + ox, ye, xm, ye);
ctx.bezierCurveTo(xm - ox, ye, x, ym + oy, x, ym);
//ctx.closePath(); // not used correctly, see comments (use to close off open path)
ctx.fill();
}
function drawLight(ctx, cx, cy, r) {
ctx.fillStyle = "#000000";
ctx.fillRect(0,0,overlay.width,overlay.height);
ctx.save();
ctx.beginPath();
ctx.arc(cx, cy, r, 0, 2 * Math.PI);
ctx.clip();
ctx.clearRect(0, 0, overlay.width, overlay.height);
ctx.restore();
if (exit) {
ctx.save();
ctx.beginPath();
ctx.arc(centerExitX, centerExitY, 35, 0, 2 * Math.PI);
ctx.clip();
ctx.clearRect(0, 0, overlay.width, overlay.height);
ctx.restore();
}
}
/*
==================================================
Start of the fireworks code, this is not mine, I used the code provided by http://seowebsitedesigning.com/create-fireworks-effect-using-html5-canvas/
I do not take the credit of writing this piece of code whatshowever!!!
==================================================
*/
function startFireworks() {
var screenWidth = window.innerWidth;
var screenHeight = window.innerHeight;
var minVx = -10;
var deltaVx = 20;
var minVy = 25
var deltaVy = 15;
var minParticleV = 5;
var deltaParticleV = 5;
var gravity = 1;
var explosionRadius = 200;
var bombRadius = 10;
var explodingDuration = 100;
var explosionDividerFactor = 10; // I couldn't find a better name. Got any?
var nBombs = 1; // initial
var percentChanceNewBomb = 5;
// Color utils forked from http://andreasstorm.com/
// (or someone who forked from there)
function Color(min) {
min = min || 0;
this.r = colorValue(min);
this.g = colorValue(min);
this.b = colorValue(min);
this.style = createColorStyle(this.r, this.g, this.b);
};
function colorValue(min) {
return Math.floor(Math.random() * 255 + min);
}
function createColorStyle(r,g,b) {
return 'rgba(' + r + ',' + g + ',' + b + ', 0.8)';
}
// A Bomb. Or firework.
function Bomb(){
var self = this;
self.radius = bombRadius;
self.previousRadius = bombRadius;
self.explodingDuration = explodingDuration;
self.hasExploded = false;
self.alive = true;
self.color = new Color();
self.px = (window.innerWidth / 4) + (Math.random() * window.innerWidth / 2);
self.py = window.innerHeight;
self.vx = minVx + Math.random() * deltaVx;
self.vy = (minVy + Math.random() * deltaVy) * -1; // because y grows downwards
self.duration =
self.update = function(particlesVector){
if(self.hasExploded){
var deltaRadius = explosionRadius - self.radius;
self.previousRadius = self.radius;
self.radius += deltaRadius / explosionDividerFactor;
self.explodingDuration--;
if(self.explodingDuration == 0){
self.alive = false;
}
}
else{
self.vx += 0;
self.vy += gravity;
if(self.vy >= 0){ // invertion point
self.explode(particlesVector);
}
self.px += self.vx;
self.py += self.vy;
}
};
self.draw = function(ctx){
ctx.beginPath();
ctx.arc(self.px, self.py, self.previousRadius, 0, Math.PI * 2, false);
if(self.hasExploded){
}
else{
ctx.fillStyle = self.color.style;
ctx.lineWidth = 1;
ctx.fill();
}
};
self.explode = function(particlesVector){
self.hasExploded = true;
var e = 3 + Math.floor(Math.random() * 3);
for(var j = 0; j < e; j++){
var n = 10 + Math.floor(Math.random() * 21); // 10 - 30
var speed = minParticleV + Math.random() * deltaParticleV;
var deltaAngle = 2 * Math.PI / n;
var initialAngle = Math.random() * deltaAngle;
for(var i = 0; i < n; i++){
particlesVector.push(new Particle(self, i * deltaAngle + initialAngle, speed));
}
}
};
}
function Particle(parent, angle, speed){
var self = this;
self.px = parent.px;
self.py = parent.py;
self.vx = Math.cos(angle) * speed;
self.vy = Math.sin(angle) * speed;
self.color = parent.color;
self.duration = 40 + Math.floor(Math.random()*20);
self.alive = true;
self.update = function(){
self.vx += 0;
self.vy += gravity / 10;
self.px += self.vx;
self.py += self.vy;
self.radius = 3;
self.duration--;
if(self.duration <= 0){
self.alive = false;
}
};
self.draw = function(ctx){
ctx.beginPath();
ctx.arc(self.px, self.py, self.radius, 0, Math.PI * 2, false);
ctx.fillStyle = self.color.style;
ctx.lineWidth = 1;
ctx.fill();
};
}
function Controller(){
var self = this;
self.canvas = document.getElementById("fireworks");
self.canvas.width = screenWidth;
self.canvas.height = screenHeight;
self.ctx = self.canvas.getContext('2d');
function setSpeedParams(){
var heightReached = 0;
var vy = 0;
while(heightReached < screenHeight && vy >= 0){
vy += gravity;
heightReached += vy;
}
minVy = vy / 2;
deltaVy = vy - minVy;
vx = (1 / 4) * screenWidth / (vy / 2);
minVx = -vx;
deltaVx = 2*vx;
};
self.resize = function(){
screenWidth = window.innerWidth;
screenHeight = window.innerHeight;
self.canvas.width = screenWidth;
self.canvas.height = screenHeight;
setSpeedParams();
};
self.resize();
window.onresize = self.resize;
self.init = function(){
self.readyBombs = [];
self.explodedBombs = [];
self.particles = [];
for(var i = 0; i < nBombs; i++){
self.readyBombs.push(new Bomb());
}
}
self.update = function(){
var aliveBombs = [];
while(self.explodedBombs.length > 0){
var bomb = self.explodedBombs.shift();
bomb.update();
if(bomb.alive){
aliveBombs.push(bomb);
}
}
self.explodedBombs = aliveBombs;
var notExplodedBombs = [];
while(self.readyBombs.length > 0){
var bomb = self.readyBombs.shift();
bomb.update(self.particles);
if(bomb.hasExploded){
self.explodedBombs.push(bomb);
}
else{
notExplodedBombs.push(bomb);
}
}
self.readyBombs = notExplodedBombs;