Phaser是一款流行的h5游戏引擎。API文档：https://photonstorm.github.io/phaser3-docs/index.html
Phaser引擎框架基本结构为html+js，在header部分引入phaser。主体游戏逻辑在js代码中，
Making your first Phaser 3 Game - Part 1
首先创造一个Phaser.Game实例，var game = new Phaser.Game(config);，原型为new Game( [GameConfig])。在config中提供三个回调函数，其中preload用于加载资源，create用于首次渲染页面，而update用于定时更新页面。这三个函数属于Phaser.Scene类成员
// this.load为LoaderPlugin类型
// 加载图片：LoaderPlugin.image(key [, url] [, xhrSettings])
this.load.path = "images/sprites/"; // 指定load资源的根目录
this.load.image('sky', 'assets/sky.png');
this.load.image('ground', 'assets/platform.png');
this.load.image('star', 'assets/star.png');
this.load.image('bomb', 'assets/bomb.png');
// 加载动画：LoaderPlugin.animation(key [, url] [, dataKey] [, xhrSettings])
this.load.animation('baddieAnims', 'files/BaddieAnims.json');
this.load.animation({
key: 'baddieAnims',
url: 'files/BaddieAnims.json'
});
// 从缓存中获取动画
var data = this.cache.json.get('baddieAnims');
// 加载图集：LoaderPlugin.atlas(key [, textureURL] [, atlasURL] [, textureXhrSettings] [, atlasXhrSettings])
this.load.atlas('mainmenu', 'images/MainMenu.png', 'images/MainMenu.json');
this.load.atlas({
key: 'mainmenu',
textureURL: 'images/MainMenu.png',
atlasURL: 'images/MainMenu.json'
});
this.load.atlas('mainmenu', 'images/MainMenu.png', 'images/MainMenu.json');
// and later in your game ...
this.add.image(x, y, 'mainmenu', 'background');
// 加载声音：LoaderPlugin.audio(key [, urls] [, config] [, xhrSettings])
this.load.audio('title', [ 'music/Title.ogg', 'music/Title.mp3', 'music/Title.m4a' ]);
this.load.audio({
key: 'title',
url: [ 'music/Title.ogg', 'music/Title.mp3', 'music/Title.m4a' ]
});
// 加载html：LoaderPlugin.html(key [, url] [, xhrSettings])
this.load.html('story', 'files/LoginForm.html');
this.load.html({
key: 'login',
url: 'files/LoginForm.html'
});
this.load.html('login', 'files/LoginForm.html');
// and later in your game ...
var data = this.cache.html.get('login');
// 加载精灵表单：spritesheet(key [, url] [, frameConfig] [, xhrSettings])
this.load.spritesheet('dude', 'assets/dude.png', { frameWidth: 32, frameHeight: 48 });
this.load.spritesheet({
key: 'bot',
url: 'images/robot.png',
frameConfig: {
frameWidth: 32,
frameHeight: 38,
startFrame: 0,
endFrame: 8
}
});
this.load.spritesheet('bot', 'images/robot.png', { frameWidth: 32, frameHeight: 38 });
// and later in your game ...
// this.add为GameObjectFactory类型
// 先加载的图片在底部，后加载的在上面
this.add.image(x, y, 'bot', 0);
完整代码示例
var config = {
type: Phaser.AUTO,
width: 800,
height: 600,
physics: {
default: "arcade",
arcade: {
gravity: { y: 300 },
debug: false
}
},
scene: {
preload: preload,
create: create,
update: update
}
};
var player;
var platforms;
var stars;
var score = 0;
var scoreText;
var gameOver = false;
var bombs;
var game = new Phaser.Game(config);
function preload() {
//加载资源文件
this.load.image("sky", "assets/sky.png");
this.load.image("ground", "assets/platform.png");
this.load.image("star", "assets/star.png");
this.load.image("bomb", "assets/bomb.png");
this.load.spritesheet("dude", "assets/dude.png", {
frameWidth: 32,
frameHeight: 48
});
}
function create() {
// 一个简单的图片作为背景 A simple background for our game
this.add.image(400, 300, "sky");
// 添加一个静态组 The platforms group contains the ground and the 2 ledges we can jump on
platforms = this.physics.add.staticGroup();
// 添加地面 Here we create the ground.
// 将地面放大成合适尺寸 Scale it to fit the width of the game (the original sprite is 400x32 in size)
// create( [x] [, y] [, key] [, frame] [, visible] [, active])
platforms.create(400, 568, "ground").setScale(2).refreshBody();
// 在不同位置添加三条横条 Now let's create some ledges
platforms.create(600, 400, "ground");
platforms.create(50, 250, "ground");
platforms.create(750, 220, "ground");
// 创建玩家(角色) The player and its settings
player = this.physics.add.sprite(100, 450, "dude");
// 设置玩家反弹系数 Player physics properties. Give the little guy a slight bounce.
player.setBounce(0);
player.setCollideWorldBounds(true); // 禁止玩家走出世界
// 将玩家的转身，走路以及停止设置动画 Our player animations, turning, walking left and walking right.
// 向左走
this.anims.create({
key: "left",
frames: this.anims.generateFrameNumbers("dude", { start: 0, end: 3 }),
frameRate: 10,
repeat: -1
});
//静止
this.anims.create({
key: "turn",
frames: [{ key: "dude", frame: 4 }],
frameRate: 20
});
//向右走
this.anims.create({
key: "right",
frames: this.anims.generateFrameNumbers("dude", { start: 5, end: 8 }),
frameRate: 10,
repeat: -1
});
// 由键盘控制方向 Input Events
cursors = this.input.keyboard.createCursorKeys();
// 产生12个星星每个之间空70像素 Some stars to collect, 12 in total, evenly spaced 70 pixels apart along the x axis
stars = this.physics.add.group({
key: "star",
repeat: 11,
setXY: { x: 12, y: 0, stepX: 70 }
});
stars.children.iterate(function(child) {
// 对于每个星星产生不同的反弹系数 Give each star a slightly different bounce
child.setBounceY(Phaser.Math.FloatBetween(0.4, 0.8));
});
bombs = this.physics.add.group();
var x = player.x < 400 ? Phaser.Math.Between(400, 800) : Phaser.Math.Between(0, 400);
//产生炸弹
var bomb = bombs.create(x, 16, "bomb");
bomb.setBounce(1);
bomb.setCollideWorldBounds(true);
bomb.setVelocity(Phaser.Math.Between(-200, 200), 20);
bomb.allowGravity = false;
// 添加分数 The score
scoreText = this.add.text(16, 16, "score: 0", {
fontSize: "32px",
fill: "#000"
});
// 两两(玩家与星星，玩家与炸弹)之间的碰撞 Collide the player and the stars with the platforms
this.physics.add.collider(player, platforms);
this.physics.add.collider(stars, platforms);
this.physics.add.collider(bombs, platforms);
// 收集星星 Checks to see if the player overlaps with any of the stars, if he does call the collectStar function
this.physics.add.overlap(player, stars, collectStar, null, this);
// 碰到炸弹
this.physics.add.collider(player, bombs, hitBomb, null, this);
}
function update() {
if (gameOver) {
return;
}
if (cursors.left.isDown) {
player.setVelocityX(-160);
player.anims.play("left", true);
} else if (cursors.right.isDown) {
player.setVelocityX(160);
player.anims.play("right", true);
} else {
player.setVelocityX(0);
player.anims.play("turn");
}
if (cursors.up.isDown && player.body.touching.down) {
player.setVelocityY(-400);
}
}
function collectStar(player, star) {
star.disableBody(true, true);
// 更新分数 Add and update the score
score += 10;
scoreText.setText("Score: " + score);
if (stars.countActive(true) === 0) {
// 重新生成一批星星 A new batch of stars to collect
stars.children.iterate(function(child) {
child.enableBody(true, child.x, 0, true, true);
});
var x =
player.x < 400 ? Phaser.Math.Between(400, 800) : Phaser.Math.Between(0, 400);
//产生炸弹
var bomb = bombs.create(x, 16, "bomb");
bomb.setBounce(1);
bomb.setCollideWorldBounds(true);
bomb.setVelocity(Phaser.Math.Between(-200, 200), 20);
bomb.allowGravity = false;
}
}
function hitBomb(player, bomb) {
// 碰到炸弹
this.physics.pause();
player.setTint(0xff0000); // 设置颜色
player.anims.play("turn");
gameOver = true;
}
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