How can i get a Rotation X.Y.Z for a save file

Question

hey guys how are you

i am making a save and load system for my game but i am havind problems with saving the Rotation of my player in X.Y.Z i tried this but it wont rotate correct as intended.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 [System.Serializable]
 public class PlayerData 
 {
     public float[] position;
     public float[] rotation;
 
    
     public PlayerData (SaveLoad player)
     {
        
         position = new float[3];
         position[0] = player.transform.position.x;
         position[1] = player.transform.position.y;
         position[2] = player.transform.position.z;

         // i tried it like this..
         rotation = new float[3];
         rotation[0] = player.transform.rotation.eulerAngles.x;
         rotation[1] = player.transform.rotation.eulerAngles.y;
         rotation[2] = player.transform.rotation.eulerAngles.z;
     }
 
 }

 using System.Collections;
 using UnityEngine;
 
 public class SaveLoad : Photon.MonoBehaviour
 {
     public void SavePlayer()
     {
         SaveSystem.SavePlayer(this);
     }
 
     public void LoadPlayer()
     {
         PlayerData data = SaveSystem.LoadPlayer();
 
         Vector3 position;
         position.x = data.position[0];
         position.y = data.position[1];
         position.z = data.position[2];
 
         Vector3 rotation;
         rotation.x = data.rotation[0];
         rotation.y = data.rotation[1];
         rotation.z = data.rotation[2];
         
     }
 }

Answer 1

Best Answer

Answer by andrew-lukasik · Jan 11 at 11:06 AM

Idk mate, works super fine on my machine

 using UnityEngine;
 
 public class PlayerComponent : MonoBehaviour
 {
     [SerializeField] string _saveSlot = "save-slot-name";
     [SerializeField] KeyCode _saveKey = KeyCode.F5;
     [SerializeField] KeyCode _loadKey = KeyCode.F8;
     void Update ()
     {
         if( Input.GetKeyDown(_saveKey) )
         {
             SaveData data = new SaveData{ Numbers = new float[6] };
             {
                 Vector3 pos = transform.position;
                 Vector3 rot = transform.rotation.eulerAngles;
                 
                 data.Version = 1;
                 
                 data.Numbers[0] = pos.x;
                 data.Numbers[1] = pos.y;
                 data.Numbers[2] = pos.z;
 
                 data.Numbers[3] = rot.x;
                 data.Numbers[4] = rot.y;
                 data.Numbers[5] = rot.z;
             }
             PlayerPrefs.SetString( key:_saveSlot , value:JsonUtility.ToJson(data) );
             Debug.Log($"Save Complete (data.Version:{data.Version})");
         }
         else if( Input.GetKeyDown(_loadKey) )
         {
             SaveData data = JsonUtility.FromJson<SaveData>( PlayerPrefs.GetString(_saveSlot) );
             if( data==null ) Debug.LogWarning("no save data to load");
             else if( data.Version==1 )
             {
                 Vector3 pos = new Vector3{
                     x = data.Numbers[0] ,
                     y = data.Numbers[1] ,
                     z = data.Numbers[2] ,
                 };
                 Vector3 rot = new Vector3{
                     x = data.Numbers[3] ,
                     y = data.Numbers[4] ,
                     z = data.Numbers[5] ,
                 };
 
                 transform.SetPositionAndRotation( pos , Quaternion.Euler(rot) );
                 Debug.Log($"Load Complete (data.Version:{data.Version})");
             }
             else if( data.Version==2 ) {}// etc.
             else Debug.LogWarning("data version is invalid");
         }
     }
 }
 
 [System.Serializable]
 public class SaveData
 {
     public int Version;
     public float[] Numbers;
 }

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Wesley21spelde · Jan 12 at 12:22 AM 0

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hey thanks for replying. i alreddy look at jou post earlyer.. the other part of my scripts are working when i save my data rotation it saves i did a debug.log on it i got the x.y.z values but i cant get the rotation loaded becouse i cant get the vector3 working on my rotation. i see how you did it and it looks to me that the way i did it should work but i am no pro at this :D

these are for saving

rotation = new float[3]; rotation[0] = player.transform.rotation.eulerAngles.x; rotation[1] = player.transform.rotation.eulerAngles.y; rotation[2] = player.transform.rotation.eulerAngles.z;

and this for loading

    Vector3 rotation;
             rotation.x = data.rotation[0]; 
             rotation.y = data.rotation[1];
             rotation.z = data.rotation[2];
 
 Player.transform.position = position; //  <----- this works
 Player.transform.rotation = rotation;// this does not

can you explaine to me what the problem is or how to solve it. i would be verry greatfull thanks ...

andrew-lukasik Wesley21spelde · Jan 12 at 10:15 AM 0

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This is because there is major difference between transform.rotation and transform.rotation.eulerAngles. Both represent rotation, yes, but in a very different format:

transform.rotation.eulerAngles is a Vector3 ( 3 x float, XYZ angles in degrees, simple )
transform.rotation is a Quaternion ( 4 x float, alien technology, incomprehensible to earthlings )

You showed that you read rotation as euler angles:

 eulerAngles[0] = player.transform.rotation.eulerAngles.x;
 eulerAngles[1] = player.transform.rotation.eulerAngles.y;
 eulerAngles[2] = player.transform.rotation.eulerAngles.z;

But you didn't show how you assign these angles back to a player.transform. I bet you made a mistake there.

Correct way is either this:

 transform.SetPositionAndRotation( pos , Quaternion.Euler(eulerAngles) );

or this:

 transform.position = pos;
 transform.rotation = Quaternion.Euler(eulerAngles);

Wesley21spelde andrew-lukasik · Jan 12 at 01:51 PM 0

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Thanks i got it working. i still have an other problem i noticed maybe you can help me with that as well ill send you the link to the question.

https://answers.unity.com/questions/1880805/updating-current-rotation-data-on-firstpersonlook.html

How can i get a Rotation X.Y.Z for a save file

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