Image Flip/Rotations with the mouse above/below 90/-90 degrees to the point. How do I accomplish this?

Question

Hello everyone, I have been stuck on a problem with image rotation/flipping based on mouse position tracking. the 2 videos below depict what I want the rotation/flip to look like, then what it currently is doing. The first video is showing a simple code I constructed using Game Maker. I am relatively new to Unity and have been trying to solve this issue for a while. None of the scripts I have found thus far have helped. The Second image is what I have been able to do in Unity. It is able to track the mouse's position and rotate towards it using the following script.

Goal - https://youtu.be/0rCbQtusL9s Current - https://youtu.be/7qv5oFHF9Rs

What should i use to alter the direction in which the image is facing? Or better yet, how do i flip the entire player to always face towards the mouse position and rotate the weapon towards the mouse target while still maintaining the desired animations? This is a loaded question and again, i apologize for being new. I'm learning and I am trying to solve this issue, but I could really use some help. Thank you for your time! !

 //Variables for positions
     public Vector3 mousePosition;
     public Vector3 gunPos;
     public float angle;
 
  void Update()
     {
         faceMouse();
     }
 
     void faceMouse()
     {
         Vector3 mousePosition = Input.mousePosition;
         mousePosition = Camera.main.ScreenToWorldPoint(mousePosition);
 
         Vector2 direction = new Vector2(
             mousePosition.x - transform.position.x, mousePosition.y - transform.position.y);
         transform.right = direction;
 
     }

Answer 1

Answer by jdonaldsonsch · Jul 19, 2018 at 04:40 AM

So i have tried coding it with a similar formula to what you placed however I am having difficulty with the transform.localRotation.z lines. It states that it "Cannot modify the return value of 'Transform.localRotation' because it is not a variable". Again since I'm trying to learn I have attempted a few fixes, none of which have worked. I understand what your code is trying to do, I don't understand however, why the engine is unable to recognize the transform component and carry out the rotation. It being in a void should not require a return value to modify or a variable to assign the value to. Do you have any further suggestions as to how to fix this?

Again, i appreciate you assisting me with this.

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NoDumbQuestion · Jul 19, 2018 at 04:45 AM 0

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I forgot about transform localRotate is not a variable.

You have to make a new vector to replace localRotate. You cannot change localRotate.z because that is how unity design to stop people make a race condition or bugs in c++ I guess.

 var copyVector = transform.localRotation;
 
 copyVector.z = 180;
 
 transform.localRotation = copyVector;

Answer 2

Answer by NoDumbQuestion · Jul 18, 2018 at 01:46 AM

Z-axis in 2D is for flipping image. Like in mirror if you have z-xis = 180 or -180.

It would be something like this.

     void faceMouse()
     {
         Vector3 mousePosition = Input.mousePosition;
         mousePosition = Camera.main.ScreenToWorldPoint(mousePosition);
         if (mousePosition.x > transform.position.x) // Mouse on the left of character
             //Flip image normal
             transform.localRotation.z = 0;
         else // Mouse on the right of character
             //Flip image 180 in z axis
             transform.localRotation.z = -180;
         Vector2 direction = new Vector2(
         mousePosition.x - transform.position.x, mousePosition.y - transform.position.y);
         transform.right = direction;     
     }

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Image Flip/Rotations with the mouse above/below 90/-90 degrees to the point. How do I accomplish this?

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