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Question by oscar70701 · Feb 15, 2019 at 02:17 PM · 2drotation2d gameplayerflip

Flip the player with arm rotation

video of the problem :

https://www.youtube.com/watch?v=plYY5GvNPrk&feature=youtu.be

need to add a flip

arms script :

public class ArmsRot : MonoBehaviour {

 private bool m_FacingRight = true;  // For determining which way the player is currently facing.
 public GameObject MyPlayer;

 void Update () 
 {
     //Arm Rotation
     Vector3 difference = Camera.main.ScreenToWorldPoint (Input.mousePosition) - transform.position;
     difference.Normalize ();
     float rotationZ = Mathf.Atan2 (difference.y, difference.x) * Mathf.Rad2Deg;
     transform.rotation = Quaternion.Euler (0f, 0f, rotationZ);
     if (rotationZ < -90 || rotationZ > 90) 
     {
         if (MyPlayer.transform.eulerAngles.y == 0) 
         {
             transform.localRotation = Quaternion.Euler (180, 0, -rotationZ);
             Flip ();
         } else if (MyPlayer.transform.eulerAngles.y == 180){
             transform.localRotation = Quaternion.Euler (180, 180, - rotationZ);
             Flip ();
         }
     }
 }
 private void Flip()
 {
 // Switch the way the player is labelled as facing.
 m_FacingRight = !m_FacingRight;

 // Multiply the player's x local scale by -1.
 Vector3 theScale = MyPlayer.transform.localScale;
 theScale.x *= -1;
 MyPlayer.transform.localScale = theScale;
 }

}

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Answer by Magso · Feb 15, 2019 at 04:19 PM

Use Mathf.Clamp on rotationZ.

 rotationZ = Mathf.Clamp(rotationZ, -90, 90);

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avatar image oscar70701 · Feb 15, 2019 at 04:52 PM 0
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where i need to use this ?

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Answer by Ymrasu · Feb 15, 2019 at 07:08 PM

First, if your arm is a child of your player then the arm gets flipped as well, so you'll need to account for that. Second, the way you set up your flip checks can cause you to call Flip() repeatedly.

 void Update()
     {
         //Arm Rotation
         Vector3 difference = Camera.main.ScreenToWorldPoint(Input.mousePosition) - transform.position;
         float rotationZ = Mathf.Atan2(difference.y, difference.x) * Mathf.Rad2Deg;
 
         
         // also check if you are facing the other way
         // so you do not call Flip() when you dont need to
         if (Mathf.Abs(rotationZ) > 90f && m_FacingRight) {
                 Flip();
         }
         else if (Mathf.Abs(rotationZ) < 90f && !m_FacingRight) {
                 Flip();
         }
 
         // Since your player's local scale is fliped
         // you'll need to adjust the rotation too
         if (!m_FacingRight) {
             rotationZ += 180;
         }
 
         // lastly apply the rotation
         transform.rotation = Quaternion.Euler(0f, 0f, rotationZ);
     }

Let me know if this updated Update() is not working out for you.

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avatar image oscar70701 · Feb 15, 2019 at 07:45 PM 0
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Thanks very cool ! (:

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