Rotate camera keeping player not in the middle

Question

Here I have a 2D top down game. Currently the camera is set on the player position. The player constantly points to mouse position.

I want to modify this setup having the camera to be set slightly forward in the player.transform.up direction but when I try it as the mouse gets closer to the character it starts looping because as the mouse approache, the camera turns but also change the mouse position so the camera needs to turn again, and so on.

this is the camera update

transform.position = new Vector3 (player.transform.position.x, player.transform.position.y, -10) + player.transform.up * camDistance;

and this is how the mouse position gets updated

mousePos = Camera.main.ScreenToWorldPoint (new Vector3(Input.mousePosition.x, Input.mousePosition.y, -5)) - transform.position;

any clue?

Answer 1

It's going to be a tiny bit of work. To fix this you will need to manage your own cursor in world-space using relative movements of the mouse to move it rather than a screen space cursor.

Using Screen.lockCursor (http://docs.unity3d.com/ScriptReference/Screen-lockCursor.html)

And Input.GetAxis("Mouse X"), Input.GetAxis("Mouse Y") (http://docs.unity3d.com/ScriptReference/Input.GetAxis.html) to get relative mouse movements.

You keep a world-coordinate mouse position and add the mouse delta (relative) movements to it. This way when the camera moves the cursor doesn't move relative to the player/world.

The cursor will be in the world rather than on the screen.