Method unbindEvents

packages/engine-core/src/Input/InputSystem.ts:163–195

* 解绑平台输入事件 * Unbind platform input events

()

     * Unbind platform input events
     */
    private unbindEvents(): void {
        if (!this._inputSubsystem) return;

        const sub = this._inputSubsystem;

        // 键盘事件 | Keyboard events
        if (sub.offKeyDown) {
            sub.offKeyDown(this._handleKeyDown);
        }
        if (sub.offKeyUp) {
            sub.offKeyUp(this._handleKeyUp);
        }

        // 鼠标事件 | Mouse events
        if (sub.offMouseMove) {
            sub.offMouseMove(this._handleMouseMove);
        }
        if (sub.offMouseDown) {
            sub.offMouseDown(this._handleMouseDown);
        }
        if (sub.offMouseUp) {
            sub.offMouseUp(this._handleMouseUp);
        }
        if (sub.offWheel) {
            sub.offWheel(this._handleWheel);
        }

        // 触摸事件 | Touch events
        sub.offTouchStart(this._handleTouchStart);
        sub.offTouchMove(this._handleTouchMove);
        sub.offTouchEnd(this._handleTouchEnd);
        sub.offTouchCancel(this._handleTouchEnd);
    }

    // ========== 事件处理函数 | Event handlers ==========
    // 使用箭头函数保持 this 绑定 | Use arrow functions to preserve this binding