how to get foreach gameobject in list a vector3 for position and rotation?

Hello! I am working on a script, which should contain the position and rotation for every gameobject in 1 list element per object. I have no clue how i could do this, but I have seen it before... maybe?

from this


to this

Code (CSharp):

1. {
2.     public Vector3 Position;
3.     public Vector3 Rotation;
4.  
5.     public List<float> Locations = new List<float>();
6.  
7.     void Update()
8.     {
9.  
10.  
11.         foreach (float loc in Locations)
12.         {
13.             Position = new Vector3(transform.position.x, transform.position.y, transform.position.z);
14.             Rotation = new Vector3(transform.localEulerAngles.x, transform.localEulerAngles.y, transform.localEulerAngles.z);
15.         }
16.     }
17. }

 

For position and rotation you should make a container class for a Vector3 and a Quaternion (or 2 Vector3's and convert to Quaternion at runtime).

E.g.

Code (CSharp):

1. [System.Serializable]
2. public class PositionAndRotationContainer
3. {
4.     public Vector3 position;
5.     public Vector3 rotation;
6.  
7.     public Quaternion GetRotation()
8.     {
9.         return Quaternion.Euler(rotation); // might be correct, didn't check it
10.     }
11. }
12.  
13. public List<PositionAndRotationContainer> locations = new List<PositionAndRotationContainer>();

 

To get the inspector display, you can define a struct that contains both the position and rotation information.

Code (CSharp):

1. public struct Location
2. {
3.     public Vector3 position;
4.     public Vector3 rotation;
5. }

Then get a list of the gameobjects you want to store the locations for, and then:

Code (CSharp):

1. public List<Location> Locations = new();
2.  
3. foreach (GameObject go in gameObjects) // gameObjects is a List<GameObject> you create beforehand
4. {
5.     Locations.Add(new Location() { postion = go.transform.postion, rotation = go.transform.localEulerAngles });
6. }
7.  

 

Thanks! that helped. but I dont get it...? why do i get the position and rotation in the console correctly but not in the script? it always shows 0.0, 0.0, 0.0

Code (CSharp):

1. {
2.     [System.Serializable]
3.     public class PositionAndRotationContainer
4.     {
5.         public string PlayerName;
6.         public Transform Player;
7.         public Vector3 Position;
8.         public Vector3 Rotation;
9.  
10.         void FixedUpdate()
11.         {
12.             Position = new Vector3(Player.transform.position.x, Player.transform.position.y, Player.transform.position.z);
13.             Rotation = new Vector3(Player.transform.localEulerAngles.x, Player.transform.localEulerAngles.y, Player.transform.localEulerAngles.z);
14.             UnityEngine.Debug.Log("Position: " + Position + " | Rotation " + Rotation);
15.         }    
16.     }
17.     public List<PositionAndRotationContainer> locations = new List<PositionAndRotationContainer>();
18. }

 

The idea is that PositionAndRotationContainer is not supposed to inherit from monobehaviour and just be a simple data container. Instead, have another script on each of the gameobjects you are interested in that is responsible for populating the list. There are a number of ways of storing the list, the simplist way is to have the list as a global, static variable inside a static class.

Code (CSharp):

1. public static class GameData
2. {
3.     public static List<PositionAndRotationContainer> locations = new();
4. }
5.  
6. public class LocationUpdater : MonoBehaviour
7. {
8.     private int locationIndex;
9.  
10.     private PositionAndRotationContainer GetLocation()
11.     {
12.         return new PositionAndRotationContainer { position = transform.position, rotation = transform.localEulerAngles };
13.     }
14.  
15.     private void Start()
16.     {
17.         locationIndex = GameData.locations.Count;
18.         GameData.locations.Add(GetLocation());
19.     }
20.  
21.     private void FixedUpdate()
22.     {
23.         GameData.locations[locationIndex] = GetLocation();
24.     }
25. }
26.  

Note that global static variables can be bad in that they are sometimes hard to debug. You might want to consider something like https://docs.unity3d.com/Manual/class-ScriptableObject.html as an alternative way of storing global data. Feel free to ask if there is anything here you are confused about.