Question

我正在使用PhaserJS库为HTML5开发一款新游戏，我遇到了一个我遇到的问题。我使用P2物理引擎进行基本平台物理，我无法使世界边界碰撞工作。这是我的代码：

Game.js

function create() {
    game.world.setBounds(0, 0, 800, 300);
    game.physics.startSystem(Phaser.Physics.P2JS);
    game.physics.p2.restitution = 0.8;

    player.create(game);
    player.instance.body.collideWorldBounds = true;
}

Player.js

Player.prototype.create = function(game) {
    this.instance = game.add.sprite(100, 100, 'player');
    game.physics.p2.enable(this.instance, Phaser.Physics.P2JS);

    this.cursors = game.input.keyboard.createCursorKeys();
};

现在我的理解是我需要通过调用＆＃34; game.world.setBounds（width，height）＆＃34;来设置世界范围。然后通过调用＆＃34; player.instance.body.collideWorldBounds = true;＆＃34;来检查边界，但是玩家精灵仍然正在通过边界。任何帮助是极大的赞赏。谢谢！

编辑：我正在使用PhaserJS 2.0.7。

Answer 1

您可能想要更新到Phaser 2.1.1，因为它们看起来已修复此问题。

您可以从this example看到。

以下是该示例的源代码：

var game = new Phaser.Game(800, 600, Phaser.AUTO, 'phaser-example', { preload: preload, create: create, update: update });

function preload() {

    game.load.image('stars', 'assets/misc/starfield.jpg');
    game.load.spritesheet('ship', 'assets/sprites/humstar.png', 32, 32);

}

var ship;
var starfield;
var cursors;

function create() {

    starfield = game.add.tileSprite(0, 0, 800, 600, 'stars');

    game.physics.startSystem(Phaser.Physics.P2JS);

    game.physics.p2.restitution = 0.8;

    ship = game.add.sprite(200, 200, 'ship');
    ship.scale.set(2);
    ship.smoothed = false;
    ship.animations.add('fly', [0,1,2,3,4,5], 10, true);
    ship.play('fly');

    //  Create our physics body. A circle assigned the playerCollisionGroup
    game.physics.p2.enable(ship);

    ship.body.setCircle(28);

    //  This boolean controls if the player should collide with the world bounds or not
    ship.body.collideWorldBounds = true;

    cursors = game.input.keyboard.createCursorKeys();

}

function update() {

    ship.body.setZeroVelocity();

    if (cursors.left.isDown)
    {
        ship.body.moveLeft(200);
    }
    else if (cursors.right.isDown)
    {
        ship.body.moveRight(200);
    }

    if (cursors.up.isDown)
    {
        ship.body.moveUp(200);
    }
    else if (cursors.down.isDown)
    {
        ship.body.moveDown(200);
    }

}

Answer 2

在我的游戏中，我不得不调用p2.setBoundsToWorld更新p2物理界限以匹配世界范围：

function create() {
    game.world.setBounds(0, 0, 800, 300);
    game.physics.startSystem(Phaser.Physics.P2JS);
    game.physics.p2.setBoundsToWorld(true, true, true, true, false);

签名如下：

setBoundsToWorld: function (left, right, top, bottom, setCollisionGroup)

如何使用PhaserJS添加基本的世界碰撞？

2 个答案: