unity实现相机位置移动

在unity场景中经常有通过键盘中W、S、A、D、Q、E等按键控制相机移动的需求，相机位置更新

控制代码如下：

private void Update()
    {
        if (!_active)
            return;

        // Translation
        if (_enableTranslation)
        {
            transform.Translate(Vector3.forward * Input.mouseScrollDelta.y * Time.deltaTime * _translationSpeed);
        }

        // Movement
        if (_enableMovement)
        {
            Vector3 deltaPosition = Vector3.zero;
            float currentSpeed = _movementSpeed;

            if (Input.GetKey(_boostSpeed))
                currentSpeed = _boostedSpeed;

            if (Input.GetKey(KeyCode.W))
            {
                deltaPosition += transform.forward;
            }
                
            if (Input.GetKey(KeyCode.S))
                deltaPosition -= transform.forward;

            if (Input.GetKey(KeyCode.A))
                deltaPosition -= transform.right;

            if (Input.GetKey(KeyCode.D))
                deltaPosition += transform.right;

            // Calc acceleration
            CalculateCurrentIncrease(deltaPosition != Vector3.zero);

            transform.position += deltaPosition * currentSpeed * _currentIncrease;
        }

        // Return to init position
        if (Input.GetKeyDown(_initPositonButton))
        {
            transform.position = _initPosition;
            transform.eulerAngles = _initRotation;
        }
    }

当需要限制相机位置时通过在Update函数中添加下判断相机当前的x/y/z位置信息即可实现