我觉得我做错了什么,但是搜索Phaser + Typescript相关的范围问题我没有提出任何问题(很多关于JS'这个' /范围虽然 - 它似乎没有很好的翻译。)
我试图设置一个Phaser.Game实例,根据我的理解需要一些回调(在我的例子中,预加载,创建然后更新)。在浏览器关闭之前会调用更新。
我的问题是内部更新,我无法访问当前类中的变量。
代码:
import { Player } from "./Player";
import { InputManager } from "./input/InputManager";
import { Point } from "./geometry/Point";
export class Game {
private player: Player;
private inputManager: InputManager;
private game: Phaser.Game;
constructor() {
this.player = new Player();
this.inputManager = new InputManager(new Phaser.Keyboard(this.game));
this.game = new Phaser.Game(1024,400, Phaser.AUTO, 'content', { preload: this.preload, create: this.create, update: this.update });
}
private preload(): void {
console.log(this.inputManager); // undefined
this.game.load.image('terminal', 'terminal.png');
}
private create(): void {
console.log("create");
console.log(this.inputManager); // undefined
var logo = this.game.add.sprite(this.game.world.centerX, this.game.world.centerY, 'terminal');
logo.anchor.setTo(0.5, 0.5);
}
private update(): void {
// update gets called right away, so check for inputManager to be initialized before contuing
if(!this.inputManager) { // Will always be false - "this" isn't what i'm expecting
console.log("undefined iputManager");
return;
}
console.log("initialized update");
this.inputManager.update();
if(this.inputManager.newDirection)
{
this.move(this.inputManager.newDirection);
this.inputManager.Clear();
}
}
private move(newDirection: Point): void {
// TODO: Movement check for the player
this.player.Location.X += newDirection.X;
this.player.Location.Y += newDirection.Y;
}
}
答案 0 :(得分:1)
非常肯定它就在这一行:
this.game = new Phaser.Game(1024,400, Phaser.AUTO, 'content', { preload: this.preload, create: this.create, update: this.update });
您尚未将上下文与this.update
相关联,因此当Phaser调用它时,它将不知道this
应该是什么。
尝试update: () => this.update()
,update: this.update.bind(this)
,甚至update: function() { _this.update() }
(其中_this
是一个在函数外捕获this
正确值的变量),取决于您的JS版本。