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Camera panning logic

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Xevion
2024-12-15 21:57:22 -06:00
parent 40ea98df93
commit dfd208ad6b
1 changed files with 69 additions and 31 deletions
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38
Assets/CameraControl.cs
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@@ -21,6 +21,8 @@ public class CameraControl : MonoBehaviour
public float TargetZoom { get { return _targetZoom; } }
private float _targetZoom;
private Vector2 _targetPosition;
private Vector2? _panningClickPosition;
private Vector3? _panningCameraPosition;
private new Camera camera;
@@ -33,6 +35,18 @@ public class CameraControl : MonoBehaviour
void Update()
{
var isPanning = Input.GetMouseButton(1);
if (!isPanning)
{
if (_panningClickPosition != null)
{
_panningClickPosition = null;
_panningCameraPosition = null;
_targetPosition = (Vector2)transform.position;
_targetZoom = camera.orthographicSize;
}
// calculate target zoom
var scroll = Input.GetAxisRaw("Mouse ScrollWheel");
if (scroll != 0)
@@ -62,7 +76,11 @@ public class CameraControl : MonoBehaviour
// Move towards the target zoom
if (_targetZoom != camera.orthographicSize)
if (!isPanning)
camera.orthographicSize = Mathf.Lerp(camera.orthographicSize, _targetZoom, Time.deltaTime * TargetZoomMultiplier);
else
// panning cancels target zoom immediately
_targetZoom = camera.orthographicSize;
// Move towards the target position
if (_targetPosition != (Vector2)transform.position)
@@ -71,4 +89,24 @@ public class CameraControl : MonoBehaviour
transform.position = new Vector3(newPosition.x, newPosition.y, -20);
}
}
else
{
if (_panningClickPosition == null)
{
_panningClickPosition = Input.mousePosition;
_panningCameraPosition = transform.position;
}
// We need to apply the delta between the initial click position and the current mouse position to the camera's position
var worldDelta = camera.ScreenToWorldPoint(Input.mousePosition) - camera.ScreenToWorldPoint(_panningClickPosition.Value);
Debug.Log($"worldDelta: {worldDelta} screenDelta: {(Vector2)Input.mousePosition - _panningClickPosition.Value}");
transform.position = new Vector3(
_panningCameraPosition.Value.x - worldDelta.x,
_panningCameraPosition.Value.y - worldDelta.y,
-20
);
}
}
}