private void Awake()
{
if (_instance != null && _instance != this)
{
Destroy(gameObject);
return;
}
_instance = this;
DontDestroyOnLoad(gameObject);
}
private void Update()
{
Vector3 areaSize = FactorySizeManager.GetCurrentSize();
Vector3 worldCenter = areaSize * 0.5f;
areaSize += new Vector3(5f, 0f, 5f); // The added tolerance lets us see some of the wall
float vertFovTan = Mathf.Tan(Camera.main.fieldOfView * Mathf.Deg2Rad * 0.5f);
float mouseToGroundScaleBefore = vertFovTan * _targetCameraPos.y * 2f / Screen.height;
float mouseToGroundScaleAfter = mouseToGroundScaleBefore;
// Zoom with scroll
float scrollAmount = Input.mouseScrollDelta.y * -5f;
if (Mathf.Abs(scrollAmount) > Mathf.Epsilon)
{
_targetCameraPos.y += Input.mouseScrollDelta.y * -5f;
float maxYVert = (areaSize.z * 0.5f) / vertFovTan;
float maxYHor = (areaSize.x * 0.5f) / (vertFovTan * Camera.main.aspect);
_targetCameraPos.y = Mathf.Clamp(_targetCameraPos.y, 50f, Mathf.Min(maxYVert, maxYHor));
// Center zoom around mouse pos
mouseToGroundScaleAfter = vertFovTan * _targetCameraPos.y * 2f / Screen.height;
Vector2 mouseDistFromCenter = new Vector2(Input.mousePosition.x - Screen.width * 0.5f, Input.mousePosition.y - Screen.height * 0.5f);
Vector2 worldDistFromCenterDelta = mouseDistFromCenter * (mouseToGroundScaleBefore - mouseToGroundScaleAfter);
_targetCameraPos.x += worldDistFromCenterDelta.x;
_targetCameraPos.z += worldDistFromCenterDelta.y;
}
// Move with right click drag
if (Input.GetMouseButton(1) && !Input.GetMouseButtonDown(1))
{
Vector3 mouseDelta = Input.mousePosition - _lastMousePos;
_targetCameraPos.x += mouseDelta.x * -mouseToGroundScaleAfter;
_targetCameraPos.z += mouseDelta.y * -mouseToGroundScaleAfter;
}
Vector3 worldSizeInScreen = new Vector3(Screen.width * mouseToGroundScaleAfter, 0f, Screen.height * mouseToGroundScaleAfter);
Vector3 scrollableWorldSizeHalf = (areaSize - worldSizeInScreen) * 0.5f;
_targetCameraPos.x = Mathf.Clamp(_targetCameraPos.x, worldCenter.x - scrollableWorldSizeHalf.x, worldCenter.x + scrollableWorldSizeHalf.x);
_targetCameraPos.z = Mathf.Clamp(_targetCameraPos.z, worldCenter.z - scrollableWorldSizeHalf.z, worldCenter.z + scrollableWorldSizeHalf.z);
_lastMousePos = Input.mousePosition;
_vectorSmoother.SetTarget(_targetCameraPos);
_vectorSmoother.Update();
Camera.main.transform.position = _vectorSmoother.GetValue();
}