Convert liste of vector3 to Json [duplicate] - json

Question

This question already has answers here:
Serialize and Deserialize Json and Json Array in Unity
(9 answers)
Closed 3 years ago.
I'm trying to get all my lines render positions and add it to a list of vector3 then covert it to Json, so I can save it in the firebase. I'm using JsonUtility, but the problem is my jsondata is always empty even the list of vecor3 is not.
This is my code then I'm using :
public class Path : MonoBehaviour
{
[SerializeField] private List<Transform> checkpoints = new List<Transform>();
private LineRenderer linerenderer;
public Material TheLineMateriel;
public static bool _ispressed = false;
private string DATA_URL = "https://kataraproject-a233a.firebaseio.com/";
private DatabaseReference reference;
public string hello = "khraaa" ;
// Start is called before the first frame update
void Start()
{
FirebaseApp.DefaultInstance.SetEditorDatabaseUrl(DATA_URL);
reference = FirebaseDatabase.DefaultInstance.RootReference;
GameObject lineObject = new GameObject();
this.linerenderer = lineObject.AddComponent<LineRenderer>();
this.linerenderer.startWidth = 0.05f;
this.linerenderer.endWidth = 0.05f;
this.linerenderer.positionCount = checkpoints.Count;
this.linerenderer.material = TheLineMateriel;
}
// Update is called once per frame
void Update()
{
this.DrawLine();
}
private void DrawLine()
{
Vector3[] checkpointsArray = new Vector3[this.checkpoints.Count];
for (int i = 0; i < this.checkpoints.Count; i++) {
Vector3 checkpointPos = this.checkpoints[i].position;
checkpointsArray[i] = new Vector3(checkpointPos.x, checkpointPos.y, 0f);
}
Vector3[] newPos = new Vector3[linerenderer.positionCount];
this.linerenderer.SetPositions(checkpointsArray);
linerenderer.GetPositions(newPos);
//for (int i = 0; i < linerenderer.positionCount ; i++)
//{
// newPos[i] = i;
//}
if ( _ispressed == true)
{
string jsonData = JsonUtility.ToJson(checkpointsArray);
//reference.Child("Position" + Random.Range(0,1000000)).SetRawJsonValueAsync(jsonData);
Debug.Log(jsonData);
_ispressed = false;
}
}
public void Save ()
{
_ispressed = true;
}
}
can someone help me please?

Answer 1

You could create a simple class to handle serialization of Unity types like such :
[Serializable]
public class SerializedVector3
{
public float x;
public float y;
public float z;
public SerializedVector3(float x, float y, float z)
{
this.x = x;
this.y = y;
this.z = z;
}
public SerializedVector3(Vector3 vector3)
{
x = vector3.x;
y = vector3.y;
z = vector3.z;
}
}
public static class Vector3Extensions
{
public static Vector3 ToVector3(this SerializedVector3 serializedVector3)
{
return new Vector3(serializedVector3.x, serializedVector3.y, serializedVector3.z);
}
public static SerializedVector3 FromVector3(this Vector3 vector3)
{
return new SerializedVector3(vector3);
}
}