[SOLVED] Learning C# as I go

Hello, im trying to create my first game and its a pretty basic idea but im having trouble bringing that idea to life. I started out by making a very badly made sprite in photoshop and then tried to research ways to make him rotate 360 degrees by aiming where he looks at with the mouse. Well i succeeded in finding a small portion of code to get him to rotate BUT he isnt looking at the direct location of the cursor. Here is the code i have....




void Update ()
{
var mouse = Input.mousePosition;
var screenPoint = Camera.main.WorldToScreenPoint(transform.localPosition);
var offset = new Vector2(mouse.x - screenPoint.x, mouse.y - screenPoint.y);
var angle = Mathf.Atan2(offset.y, offset.x) * Mathf.Rad2Deg;
transform.rotation = Quaternion.Euler(0, 0, angle);
}

 

Is it turning in sync with your cursor movement, but in the wrong direction, or is it not turning?
In the former case, you may need to adjust how you calculate and apply the angle based on your camera settings. What are your camera and sprite positions?

 

The code is working for me.
Note: I began with "right direction as forward".

 

Its not showing my cursor here but its location is almost directly to the right of the sprite and of course i want it to be in the direction of the nose of the sprite

 

Its turning quite nicely, the problem, though, is the sprite isnt aiming at the direction the cursor is pointing to.

 

The easiest thing I can imagine is that you turn the sprite and reimport it so it's pointing to the right.

 

Ok, i will try that and keep you updated

 

I tried doing so and same thing happened. I tried rotating the sprite in the opposite direction it was moving when i would hit play and it would still go to the far left. I feel as though the code is directed toward the opposite side of the mouse but i cant figure out what is wrong

 

To look in the direction of the cursor.......let me think...........................

Is it possible to use transform.LookAt in 2D (just lock one of the axis?). You have too complex of code for me up there I'm terrible at math! D:

Here's a topic just googled:

https://answers.unity.com/questions/585035/lookat-2d-equivalent-.html

Code (CSharp):

1. Vector3 diff = Camera.main.ScreenToWorldPoint(Input.mousePosition) - transform.position;
2.          diff.Normalize();
3.          float rot_z = Mathf.Atan2(diff.y, diff.x) * Mathf.Rad2Deg;
4.          transform.rotation = Quaternion.Euler(0f, 0f, rot_z - 90);

 

You are a life saver! It works perfectly, thank you!

 

Ya. That would work.. I was trying to avoid the change for ya.

When you tested my idea, did you have a new sprite that was rotated outside of Unity?
In 2D like that, right is forward.. so your character pointing up was technically pointing its right to your cursor earlier.. if that makes sense.

Anyways, glad it's working for ya.

 

Ahh, now its much more clear, im new everything including coding so any tips would be very much appreciated!

 

Ya, if you ever wanted to test that in practice, it would just mean you could create all of your sprites with the forward and not have to always adjust the turn (ie: -90).

*Though, knowing how & that you can adjust them like that is also useful... lol