Asteroids

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How do I make an asteroids?

The classic asteroids. What is a asteroids? How do you make a asteroids? This script and codes were developed by Aitor on 16 September 2022, Friday.

Asteroids Previews

Asteroids - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Asteroids</title> <link href='https://fonts.googleapis.com/css?family=Stalinist+One' rel='stylesheet' type='text/css'>
<meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css"> <link rel="stylesheet" href="css/style.css">
</head>
<body>
<canvas width="400" height="400"></canvas> <script src="js/index.js"></script>
</body>
</html>

Asteroids - Script Codes CSS Codes

html,
body { background: #000; color: #fff; padding: 0; margin: 0; overflow: hidden;
}

Asteroids - Script Codes JS Codes

"use strict";
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var canvas = document.querySelector("canvas"), context = canvas.getContext("2d"), entities = [];
var QuadNode = function () { function QuadNode(rect) { var level = arguments.length <= 1 || arguments[1] === undefined ? 0 : arguments[1]; _classCallCheck(this, QuadNode); this.rect = rect; this.level = level; this.objects = []; this.topLeft = null; this.topRight = null; this.bottomLeft = null; this.bottomRight = null; } QuadNode.prototype.subdivide = function subdivide() { return this.createTopLeft().createTopRight().createBottomLeft().createBottomRight(); }; QuadNode.prototype.createTopLeft = function createTopLeft() { if (!this.topLeft) { var rect = this.rect.clone(); this.topLeft = new QuadNode(rect.scale(0.5, 0.5), this.level + 1); } return this; }; QuadNode.prototype.createTopRight = function createTopRight() { if (!this.topRight) { var rect = this.rect.clone(); this.topRight = new QuadNode(rect.scale(0.5, 0.5).translateX(rect.width), this.level + 1); } return this; }; QuadNode.prototype.createBottomLeft = function createBottomLeft() { if (!this.bottomLeft) { var rect = this.rect.clone(); this.bottomLeft = new QuadNode(rect.scale(0.5, 0.5).translateY(rect.height), this.level + 1); } return this; }; QuadNode.prototype.createBottomRight = function createBottomRight() { if (!this.bottomRight) { var rect = this.rect.clone(); this.bottomRight = new QuadNode(rect.scale(0.5, 0.5).translate(rect.width, rect.height), this.level + 1); } return this; }; return QuadNode;
}();
var Key = function () { var keys = new Array(256); function handleKey(e) { keys[e.keyCode] = e.type === "keydown"; } window.addEventListener("keyup", handleKey); window.addEventListener("keydown", handleKey); return { SPACE: 32, LEFT: 37, UP: 38, RIGHT: 39, DOWN: 40, isDown: function isDown(key) { return keys[key]; }, isUp: function isUp(key) { return !this.isDown(key); } };
}();
var Random = function () { var MULTIPLIER = 1103515245, INCREMENT = 12345, MODULUS = Math.pow(2, 31); function lcg(value) { var multiplier = arguments.length <= 1 || arguments[1] === undefined ? MULTIPLIER : arguments[1]; var increment = arguments.length <= 2 || arguments[2] === undefined ? INCREMENT : arguments[2]; var modulus = arguments.length <= 3 || arguments[3] === undefined ? MODULUS : arguments[3]; return (value * multiplier + increment) % modulus; } var _value = 0; return { value: function value() { _value = lcg(_value);return _value / MODULUS; }, float: function float(min, max) { return min + this.value() * (max - min); }, int: function int(min, max) { return Math.round(this.float(min, max)); }, unit: function unit(v) { return this.float(-v, v); } };
}();
var Time = function () { function Time(now, duration) { _classCallCheck(this, Time); this.reset(now); this.duration = duration; } Time.prototype.reset = function reset(now) { this.start = this.current = now; }; Time.prototype.update = function update(now) { this.current = now; return this.current - this.start > this.duration; }; return Time;
}();
var Line = function () { Line.sideOf = function sideOf(start, end, point) { return (end.x - start.x) * (point.y - start.y) - (end.y - start.y) * (point.x - start.x); }; function Line(start, end) { _classCallCheck(this, Line); this.start = start; this.end = end; } return Line;
}();
var Rect = function () { Rect.isIn = function isIn(x, y, l, t, r, b) { return x > l && y > t && x < r && y < b; }; function Rect(x, y, width, height) { _classCallCheck(this, Rect); this.x = x; this.y = y; this.width = width; this.height = height; } Rect.prototype.translateX = function translateX(v) { this.x += v;return this; }; Rect.prototype.translateY = function translateY(v) { this.y += v;return this; }; Rect.prototype.translate = function translate(x, y) { return this.translateX(x).translateY(y); }; Rect.prototype.position = function position(x, y) { this.x = x; this.y = y; return this; }; Rect.prototype.size = function size(x, y) { this.width = x; this.height = y; return this; }; Rect.prototype.set = function set(x, y, width, height) { this.x = x; this.y = y; this.width = width; this.height = height; return this; }; Rect.prototype.scaleX = function scaleX(v) { this.width *= v;return this; }; Rect.prototype.scaleY = function scaleY(v) { this.height *= v;return this; }; Rect.prototype.scale = function scale(x, y) { return this.scaleX(x).scaleY(y); }; Rect.prototype.clone = function clone() { return new Rect(this.x, this.y, this.width, this.height); }; _createClass(Rect, [{ key: "top", get: function get() { return this.y; } }, { key: "bottom", get: function get() { return this.y + this.height; } }, { key: "left", get: function get() { return this.x; } }, { key: "right", get: function get() { return this.x + this.width; } }, { key: "lengthSquared", get: function get() { return this.width * this.width + this.height * this.height; } }, { key: "length", get: function get() { return Math.sqrt(this.lengthSquared); } }]); return Rect;
}();
var Vector = function () { Vector.isVector = function isVector(v) { return v instanceof Vector; }; Vector.isLikeVector = function isLikeVector(v) { return typeof v.x === "number" && typeof v.y === "number"; }; Vector.createRandom = function createRandom(xmin, xmax, ymin, ymax) { return new Vector(Random.float(xmin, xmax), Random.float(ymin, ymax)); }; Vector.createPolar = function createPolar(rotation) { var length = arguments.length <= 1 || arguments[1] === undefined ? 1 : arguments[1]; return new Vector().polar(rotation, length); }; Vector.polarX = function polarX(rotation) { var length = arguments.length <= 1 || arguments[1] === undefined ? 1 : arguments[1]; return Math.cos(rotation) * length; }; Vector.polarY = function polarY(rotation) { var length = arguments.length <= 1 || arguments[1] === undefined ? 1 : arguments[1]; return Math.sin(rotation) * length; }; function Vector() { var x = arguments.length <= 0 || arguments[0] === undefined ? 0.0 : arguments[0]; var y = arguments.length <= 1 || arguments[1] === undefined ? 0.0 : arguments[1]; _classCallCheck(this, Vector); this.x = x; this.y = y; } Vector.prototype.operation = function operation(name, args) { var ops = this[name + "s"], opv = this[name + "v"], opn = this[name + "n"]; if (args.length === 1 && typeof args[0] === "number") { return ops(args[0]); } else if (args.length === 1 && Vector.isLikeVector(args[0])) { return opv(args[0]); } else if (args.length === 2 && typeof args[0] === "number" && typeof args[1] === "number") { return opn(args[0], args[1]); } else { throw new Error(); } }; Vector.prototype.set = function set(x, y) { this.x = x;this.y = y;return this; }; Vector.prototype.add = function add() { return this.operation("add", arguments); }; Vector.prototype.addn = function addn(x, y) { return this.set(this.x + x, this.y + y); }; Vector.prototype.addv = function addv(v) { return this.addn(v.x, v.y); }; Vector.prototype.adds = function adds(s) { return this.addn(s, s); }; Vector.prototype.sub = function sub() { return this.operation("sub", arguments); }; Vector.prototype.subn = function subn(x, y) { return this.set(this.x - x, this.y - y); }; Vector.prototype.subv = function subv(v) { return this.subn(v.x, v.y); }; Vector.prototype.subs = function subs(s) { return this.subn(s, s); }; Vector.prototype.mul = function mul() { return this.operation("mul", arguments); }; Vector.prototype.muln = function muln(x, y) { return this.set(this.x * x, this.y * y); }; Vector.prototype.mulv = function mulv(v) { return this.muln(v.x, v.y); }; Vector.prototype.muls = function muls(s) { return this.muln(s, s); }; Vector.prototype.div = function div() { return this.operation("div", arguments); }; Vector.prototype.divn = function divn(x, y) { return this.set(this.x / x, this.y / y); }; Vector.prototype.divv = function divv(v) { return this.divn(v.x, v.y); }; Vector.prototype.divs = function divs(s) { return this.divn(s, s); }; Vector.prototype.polar = function polar(rotation) { var length = arguments.length <= 1 || arguments[1] === undefined ? 1 : arguments[1]; return this.set(Vector.polarX(rotation, length), Vector.polarY(rotation, length)); }; Vector.prototype.normalize = function normalize() { var length = this.length;return this.divs(length); }; Vector.prototype.clone = function clone() { return new Vector(this.x, this.y); }; Vector.prototype.randomize = function randomize(x, y) { return this.set(this.x + Random.unit(x), this.y + Random.unit(y)); }; _createClass(Vector, [{ key: "lengthSquared", get: function get() { return this.x * this.x + this.y * this.y; } }, { key: "length", get: function get() { return Math.sqrt(this.lengthSquared); } }]); return Vector;
}();
var Entity = function () { function Entity() { var opts = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0]; _classCallCheck(this, Entity); var options = Object.assign({ x: 0, y: 0, rotation: 0, started: 0 }, opts); this.started = options.started; this.position = new Vector(options.x, options.y); this.velocity = new Vector(0.0, 0.0); this.acceleration = new Vector(0.0, 0.0); this.friction = new Vector(1.0, 1.0); this.scale = new Vector(1.0, 1.0); this.rotation = options.rotation; this.alpha = 1.0; this.compositeOperation = "source-over"; this.collisions = []; } Entity.prototype.clearCollisions = function clearCollisions() { while (this.collisions.length > 0) { this.collisions.pop(); } return this; }; Entity.prototype.addCollision = function addCollision(entity) { if (this.collisions.indexOf(entity) < 0) { this.collisions.push(entity); } return this; }; Entity.prototype.hasCollidedWith = function hasCollidedWith(type) { for (var index = 0; index < this.collisions.length; index++) { var collision = this.collisions[index]; if (collision instanceof type) { return true; } } return false; }; Entity.prototype.collides = function collides(entity) { throw new Error("You need to implement this method"); }; Entity.prototype.render = function render(now) { context.save(); context.translate(this.position.x, this.position.y); context.rotate(this.rotation); context.scale(this.scale.x, this.scale.y); context.globalAlpha = this.alpha; context.globalCompositeOperation = this.compositeOperation; this.draw(now); context.restore(); }; Entity.prototype.update = function update(now) { this.velocity.addv(this.acceleration); this.position.addv(this.velocity); this.velocity.mulv(this.friction); }; Entity.prototype.clone = function clone() { var options = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0]; var clonedObject = new this.constructor(options); clonedObject.position = this.position.clone(); clonedObject.velocity = this.velocity.clone(); clonedObject.acceleration = this.acceleration.clone(); clonedObject.friction = this.friction.clone(); clonedObject.scale = this.scale.clone(); clonedObject.rotation = this.rotation; clonedObject.alpha = this.alpha; clonedObject.compositeOperation = this.compositeOperation; clonedObject.collisions = []; return clonedObject; }; return Entity;
}();
var TextEntity = function (_Entity) { _inherits(TextEntity, _Entity); function TextEntity() { var options = arguments.length <= 0 || arguments[0] === undefined ? { text: "", textAlign: "left", textBaseline: "top", fontName: "monospace", fontSize: 20, fontSizeUnit: "px", fontWeight: "normal", fontVariant: "normal" } : arguments[0]; _classCallCheck(this, TextEntity); var _this = _possibleConstructorReturn(this, _Entity.call(this, options)); _this.text = options.text; _this.textAlign = options.textAlign || "left"; _this.textBaseline = options.textBaseline || "top"; _this.fontVariant = options.fontVariant || "normal"; _this.fontWeight = options.fontWeight || "normal"; _this.fontName = options.fontName || "monospace"; _this.fontSize = options.fontSize || 20; _this.fontSizeUnit = options.fontSizeUnit || "px"; return _this; } TextEntity.prototype.collides = function collides(entity) { return false; }; TextEntity.prototype.draw = function draw(now) { context.font = this.fontVariant + " " + this.fontWeight + " " + this.fontSize + this.fontSizeUnit + " " + this.fontName; context.textAlign = this.textAlign; context.textBaseline = this.textBaseline; }; return TextEntity;
}(Entity);
var TimerText = function (_TextEntity) { _inherits(TimerText, _TextEntity); function TimerText(options) { _classCallCheck(this, TimerText); var _this2 = _possibleConstructorReturn(this, _TextEntity.call(this, options)); _this2.time = 0; _this2.isRunning = false; return _this2; } TimerText.prototype.reset = function reset() { this.time = 0; this.started = null; this.isRunning = true; return this; }; TimerText.prototype.stop = function stop() { this.isRunning = false; return this; }; TimerText.prototype.update = function update(now) { if (this.isRunning) { if (this.started === null) { this.started = now; } this.time = now - this.started; this.text = Math.round(this.time / 1000).toString(); } return _TextEntity.prototype.update.call(this, now); }; TimerText.prototype.draw = function draw(now) { _TextEntity.prototype.draw.call(this, now); context.strokeStyle = "#fff"; context.strokeText("TIME", 0, -this.fontSize); context.strokeText(this.text, 0, 0); }; return TimerText;
}(TextEntity);
var SinText = function (_TextEntity2) { _inherits(SinText, _TextEntity2); function SinText(options) { _classCallCheck(this, SinText); return _possibleConstructorReturn(this, _TextEntity2.call(this, options)); } SinText.prototype.draw = function draw(now) { _TextEntity2.prototype.draw.call(this, now); var timePerLetter = 200; var x = 0; var midX = context.measureText(this.text).width * 0.5; context.save(); context.translate(-midX, 0); for (var index = 0; index < this.text.length; index++) { var progress = (now - index * timePerLetter) / timePerLetter; var alpha = Math.max(0.5, Math.min(1, Math.sin(progress))); context.globalAlpha = alpha; context.strokeStyle = "#fff"; context.strokeText(this.text.substr(index, 1), x, 0); var measure = context.measureText(this.text.substr(index, 1)); x += measure.width; } context.restore(); }; return SinText;
}(TextEntity);
var FadeText = function (_TextEntity3) { _inherits(FadeText, _TextEntity3); function FadeText(options) { _classCallCheck(this, FadeText); return _possibleConstructorReturn(this, _TextEntity3.call(this, options)); } FadeText.prototype.reset = function reset(now) { this.started = now; return this; }; FadeText.prototype.draw = function draw(now) { _TextEntity3.prototype.draw.call(this, now); var time = now - this.started; var timePerLetter = 200; var x = 0; var midX = context.measureText(this.text).width * 0.5; context.save(); context.translate(-midX, 0); for (var index = 0; index < this.text.length; index++) { var alpha = Math.max(0, Math.min(1, (time - index * timePerLetter) / timePerLetter)); context.globalAlpha = alpha; context.strokeStyle = "#f0c"; context.strokeText(this.text.substr(index, 1), x, 0); var measure = context.measureText(this.text.substr(index, 1)); x += measure.width; } context.restore(); }; return FadeText;
}(TextEntity);
var Fire = function (_Entity2) { _inherits(Fire, _Entity2); function Fire() { var options = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0]; _classCallCheck(this, Fire); var _this5 = _possibleConstructorReturn(this, _Entity2.call(this, options)); _this5.velocity.polar(_this5.rotation, 5); return _this5; } Fire.prototype.collides = function collides(entity) { if (entity instanceof Asteroid) { return entity.collides(this); } return false; }; Fire.prototype.draw = function draw(now) { context.fillStyle = "#f00"; context.fillRect(-4, -2, 8, 4); }; return Fire;
}(Entity);
var Asteroid = function (_Entity3) { _inherits(Asteroid, _Entity3); function Asteroid() { var options = arguments.length <= 0 || arguments[0] === undefined ? { size: 50 } : arguments[0]; _classCallCheck(this, Asteroid); var _this6 = _possibleConstructorReturn(this, _Entity3.call(this, options)); _this6.points = []; _this6.size = options.size; var length = Random.int(9, 13); for (var index = 0; index < length; index++) { _this6.points.push(Vector.createPolar(index / length * Math.PI * 2, Random.int(_this6.size - 5, _this6.size + 5))); } return _this6; } Asteroid.prototype.collides = function collides(entity) { for (var index = 0; index <= this.points.length; index++) { var start = this.points[index % this.points.length], end = this.points[(index + 1) % this.points.length]; if (Line.sideOf(start, end, entity.position.clone().subv(this.position)) < 0) { return false; } } return true; }; Asteroid.prototype.draw = function draw(now) { context.beginPath(); for (var index = 0; index < this.points.length; index++) { var point = this.points[index]; if (index === 0) { context.moveTo(point.x, point.y); } else { context.lineTo(point.x, point.y); } } context.closePath(); context.strokeStyle = "#fff"; context.stroke(); }; return Asteroid;
}(Entity);
var Explosion = function (_Entity4) { _inherits(Explosion, _Entity4); function Explosion() { var opts = arguments.length <= 0 || arguments[0] === undefined ? { duration: 1000 } : arguments[0]; _classCallCheck(this, Explosion); var _this7 = _possibleConstructorReturn(this, _Entity4.call(this, opts)); var options = Object.assign({ duration: 1000 }, opts); _this7.duration = options.duration; return _this7; } Explosion.prototype.hasExpired = function hasExpired() { return this.time >= this.duration; }; Explosion.prototype.collides = function collides(entity) { return false; }; Explosion.prototype.update = function update(now) { _Entity4.prototype.update.call(this, now); this.time = now - this.started; this.alpha = Math.min(1, Math.max(0, 1.0 - this.time / this.duration)); this.rotation = (now - this.started) / (this.duration * 5) * Math.PI * 2; }; Explosion.prototype.draw = function draw(now) { context.beginPath(); var time = Math.max(0, (now - this.started) / (this.duration * 0.01)); var points = 12; for (var i = 0; i < points; i++) { var progress = i / points * Math.PI * 2; context.moveTo(Vector.polarX(progress, time * 0.5), Vector.polarY(progress, time * 0.5)); context.lineTo(Vector.polarX(progress, time), Vector.polarY(progress, time)); } context.strokeStyle = "#0ff"; context.stroke(); }; return Explosion;
}(Entity);
var Player = function (_Entity5) { _inherits(Player, _Entity5); function Player() { var options = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0]; _classCallCheck(this, Player); return _possibleConstructorReturn(this, _Entity5.call(this, options)); } Player.prototype.reset = function reset() { this.velocity.set(0, 0); this.acceleration.set(0, 0); this.position.set(canvas.width * 0.5, canvas.height * 0.5); this.clearCollisions(); return this; }; Player.prototype.collides = function collides(entity) { if (entity instanceof Asteroid) { return entity.collides(this); } return false; }; Player.prototype.draw = function draw(now) { context.beginPath(); context.moveTo(-10, -10); context.lineTo(10, 0); context.lineTo(-10, 10); context.lineTo(-5, 0); context.closePath(); context.strokeStyle = "#0cf"; context.stroke(); }; return Player;
}(Entity);
var State = { TITLE: "title", GAME_OVER: "game_over", GAME: "game"
};
var state = State.TITLE;
var player = new Player({ started: 0, x: canvas.width * 0.5, y: canvas.height * 0.5
});
var gameOver = new FadeText({ started: 0, fontName: "Stalinist One", fontSize: 40, textBaseline: "middle", text: "Game Over", x: canvas.width * 0.5, y: canvas.height * 0.5
});
var title = new SinText({ started: 0, fontName: "Stalinist One", fontSize: 80, textBaseline: "middle", text: "ASTEROIDS", x: canvas.width * 0.5, y: canvas.height * 0.5
});
var subtitle = new SinText({ started: 0, fontName: "Stalinist One", fontSize: 20, textBaseline: "middle", text: "Click here to start", x: canvas.width * 0.5, y: canvas.height * 0.8
});
var time = new TimerText({ fontName: "Stalinist One", fontSize: 20, textAlign: "center", textBaseline: "middle", x: canvas.width * 0.5, y: canvas.height * 0.1
});
//entities.push(player);
entities.push(title);
entities.push(subtitle);
var fireCadence = new Time(0, 200);
function render(now) { context.clearRect(0, 0, canvas.width, canvas.height); for (var index = 0; index < entities.length; index++) { var entity = entities[index]; entity.render(now); } /*context.font = "normal normal 12px monospace"; context.textAlign = "left"; context.textBaseline = "top"; context.fillStyle = "#fff"; context.fillText("Entities: " + entities.length, 0, 0);*/
}
function update(now) { for (var index = 0; index < entities.length; index++) { var entity = entities[index]; entity.update(now); }
}
function preupdate(now) { if (entities.length < 5) { var asteroid = new Asteroid(); asteroid.velocity.randomize(2, 2); entities.push(asteroid); } // este método realiza el chequeo entre todas // las entidades para comprobar si han colisionado o no. for (var i = 0; i < entities.length; i++) { var a = entities[i]; a.clearCollisions(); for (var j = 0; j < entities.length; j++) { var b = entities[j]; if (a.collides(b)) { a.addCollision(b); b.addCollision(a); } } } if (Key.isDown(Key.SPACE)) { if (fireCadence.update(now) && entities.indexOf(player) >= 0) { fireCadence.reset(now); var fire = new Fire({ started: now, x: player.position.x, y: player.position.y, rotation: player.rotation }); entities.push(fire); } } if (Key.isDown(Key.LEFT)) { player.rotation -= 0.1; } else if (Key.isDown(Key.RIGHT)) { player.rotation += 0.1; } if (Key.isDown(Key.UP)) { player.acceleration.polar(player.rotation, 0.1); } else { player.acceleration.muls(0.5); }
}
function createExplosions(now, entity) { for (var index = 0; index < 5; index++) { entities.push(new Explosion({ started: now + index * 200, x: entity.position.x + Random.unit(20), y: entity.position.y + Random.unit(20) })); }
}
function postupdate(now) { for (var index = entities.length - 1; index >= 0; index--) { var entity = entities[index]; if (entity.position.x < 0) { entity.position.x = canvas.width; } if (entity.position.y < 0) { entity.position.y = canvas.height; } if (entity.position.x > canvas.width) { entity.position.x = canvas.width - entity.position.x; } if (entity.position.y > canvas.height) { entity.position.y = canvas.height - entity.position.y; } if (entity instanceof Fire) { if (now - entity.started >= 1000 || entity.hasCollidedWith(Asteroid)) { entities.splice(index, 1); } } else if (entity instanceof Asteroid) { if (entity.hasCollidedWith(Fire)) { if (entity.size > 20) { var a = entity.clone({ size: entity.size * 0.5 }); var b = entity.clone({ size: entity.size * 0.5 }); a.velocity.randomize(entity.velocity.length, entity.velocity.length); b.velocity.randomize(entity.velocity.length, entity.velocity.length); entities.push(a, b); } entities.splice(index, 1); createExplosions(now, entity); } } else if (entity instanceof Player) { if (entity.hasCollidedWith(Asteroid)) { state = State.GAME_OVER; entities.splice(index, 1); entities.push(gameOver.reset(now)); entities.push(subtitle); createExplosions(now, entity); time.stop(); return; } } else if (entity instanceof Explosion) { if (entity.hasExpired()) { entities.splice(index, 1); } } }
}
function frame(now) { preupdate(now); update(now); postupdate(now); render(now); window.requestAnimationFrame(frame);
}
function handleClick(e) { e.preventDefault(); if (state === State.GAME_OVER || state === State.TITLE) { var gameOverIndex = entities.indexOf(gameOver); if (gameOverIndex >= 0) { entities.splice(gameOverIndex, 1); } var titleIndex = entities.indexOf(title); if (titleIndex >= 0) { entities.splice(titleIndex, 1); } var subtitleIndex = entities.indexOf(subtitle); if (subtitleIndex >= 0) { entities.splice(subtitleIndex, 1); } entities.push(player.reset()); if (entities.indexOf(time) >= 0) { time.reset(); } else { entities.push(time.reset()); } state = State.GAME; }
}
function handleResize(e) { canvas.width = window.innerWidth; canvas.height = window.innerHeight; title.position.set(canvas.width * 0.5, canvas.height * 0.5); subtitle.position.set(canvas.width * 0.5, canvas.height * 0.8); time.position.set(canvas.width * 0.5, canvas.height * 0.1); gameOver.position.set(canvas.width * 0.5, canvas.height * 0.5); player.position.set(canvas.width * 0.5, canvas.height * 0.5);
}
window.requestAnimationFrame(frame);
window.addEventListener("click", handleClick);
window.addEventListener("resize", handleResize);
window.dispatchEvent(new Event("resize"));
Asteroids - Script Codes
Asteroids - Script Codes
Home Page Home
Developer Aitor
Username AzazelN28
Uploaded September 16, 2022
Rating 4
Size 13,025 Kb
Views 34,408
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Aitor (AzazelN28) Script Codes
Name
Galaxy Preview
WebGL Point Sprites
Clock
Date Input
Romboids
Circuitry
Physics 101
Blending Experiment 29
Loader
Dancing Text
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