title: Moving character face to face the mouse, but without moving out of the head.? Unity2D
body: <p>So I want to make a game with RPG movement, but it's more like a wave game, with static camera.
  I want to move the character's face to make it look like it's looking at the mouse, but I didn't find how. I know how to rotate it but not how to rotate it with the mouse. Here are some images so I can explain better.
  <a href="https://i.stack.imgur.com/gnPoL.png" rel="nofollow noreferrer">This will be when the mouse is either in 0,0 or outside the window</a></p>
  <p><a href="https://i.stack.imgur.com/iEtkB.png" rel="nofollow noreferrer">And this is when, for example, the mouse is in the right</a></p>