game_h5/smart-shoes-cat-upgrade/assets/Script/Game/Component/Control/KeyBoardControl.ts

import BasicObject from "../../../Engine/Basic/BasicObject";
import EventManager from "../../../Engine/Event/EventManager";
import GameManager from "../../Game/GameManager";
import { CMD } from "../../SDK/sdk";

/**
 * 键盘操作组件
 */
export default class KeyBoardControl extends BasicObject {

    /**键盘值记录 */
    private codes: Map<number, number>;

    constructor () {
        super();

        this.codes = new Map<number, number>();

        cc.systemEvent.on(cc.SystemEvent.EventType.KEY_DOWN, this.onKeyDown, this);
        cc.systemEvent.on(cc.SystemEvent.EventType.KEY_UP, this.onKeyUp, this);
    }

    _destroy () {
        cc.systemEvent.off(cc.SystemEvent.EventType.KEY_DOWN, this.onKeyDown, this);
        cc.systemEvent.off(cc.SystemEvent.EventType.KEY_UP, this.onKeyUp, this);

        super._destroy();
    }

    onKeyDown (event) {
        let bool = true;
        switch(event.keyCode) {
            case cc.macro.KEY.left:
                this.codes.set(cc.macro.KEY.left, cc.macro.KEY.left);
                this.codes.delete(cc.macro.KEY.right);
                break;
            case cc.macro.KEY.right:
                this.codes.set(cc.macro.KEY.right, cc.macro.KEY.right);
                this.codes.delete(cc.macro.KEY.left);
                break;
            case cc.macro.KEY.up:
                this.codes.set(cc.macro.KEY.up, cc.macro.KEY.up);
                this.codes.delete(cc.macro.KEY.down);
                break;
            case cc.macro.KEY.down:
                this.codes.set(cc.macro.KEY.down, cc.macro.KEY.down);
                this.codes.delete(cc.macro.KEY.up);
                break;
            case cc.macro.KEY.z:
                bool = !this.codes.has(cc.macro.KEY.z);
                this.codes.set(cc.macro.KEY.z, cc.macro.KEY.z);
                break;
        }

        if (bool == true) {
            this.sendJoystickEvent();
        }
    }

    onKeyUp (event) {
        this.codes.delete(event.keyCode);
        this.sendJoystickEvent();
    }

    private sendJoystickEvent (): void {
        this.codes.forEach((value: number, key: number) => {
            switch(value) {
                case cc.macro.KEY.left:
                    EventManager.sendEvent(CMD.ENTER_KEY.toString());
                    break;
                case cc.macro.KEY.right:
                    EventManager.sendEvent(CMD.CANCLE_KEY.toString());
                    break;
                case cc.macro.KEY.up:
                    EventManager.sendEvent(CMD.BACK_LEFT.toString());
                    break;
                case cc.macro.KEY.down:
                    EventManager.sendEvent(CMD.BACK_RIGHT.toString());
                    break;
                case cc.macro.KEY.z:
                    EventManager.sendEvent(GameManager.ActionEvent);
                    break;
            }
        });
    }
}