Phaser：无法访问在其他范围内定义的变量

Question

我运行在 Phaser 中遇到了问题。基本上，主校园函数中定义的玩家变量是不可访问的。我首先尝试将它与其他变量一起定义，但由于这不起作用，我尝试在主函数中定义它。当我尝试以速度移动时，我只会收到错误 "Uncaught TypeError: Cannot set property 'x' of undefined"。希望有人能帮忙，先谢谢了。

var Schoolyard = function() {
    this._player = null;
};

var map;
var backgroundLayer;
var backgroundLayer2;
var collisionLayer;
var cursors;

Schoolyard.prototype = {
    preload: function() {

    },
    create: function() {
        this.game.physics.startSystem(Phaser.Physics.ARCADE);
        map = this.game.add.tilemap('schoolyard');

        map.addTilesetImage('tiles');
        map.addTilesetImage('tiles2');

        backgroundLayer = map.createLayer('BackgroundLayer');
        brackgroundLayer2 = map.createLayer('BackgroundLayer2');
        collisionLayer = map.createLayer('CollisionLayer');

        this._player = this.game.add.sprite(400,400,'main');

        this.game.physics.enable(this._player);

        this.game.camera.follow(this._player);

        this._player.frame = 30;

        cursors = this.game.input.keyboard.createCursorKeys();
    },
    update: function() {
        if (cursors.right.isDown)
            this._player.velocity.x = 150;
    }
};

Answer 1

好的，这里作为答案：

速度是物理体的属性。

你应该使用：

this._player.body.velocity.x = 150

Phaser：无法访问在其他范围内定义的变量

Phaser: Cannot Access Variable Defined in Other Scope

javascript

phaser-framework