I'm making an endless runner game.

I have the script that make coins and walls appear at the same time in front of the player.

The problem is that sometimes the coin and wall appear in the same place/position.

How can I ensure that coins and walls do not appear in the same place/position?

public class Instantiate : MonoBehaviour
{
    public float betweenSpawn = 1.05f;
    public float angle;
    public Vector3 spawnValues; //Range of appearing 
    public GameObject coinPrefab;
    public GameObject wallPrefab;

    public Transform pathPointInstantiate;
    public Transform platformInstantiate;

    void Start()
    {
        InvokeRepeating("Spawn", 0f, betweenSpawn);
    }

    void Spawn()
    {
        Vector3 spawnPathPointPosition = new Vector3(Random.Range(-spawnValues.x, spawnValues.x), 1, Random.Range(-spawnValues.z, spawnValues.z));
        Vector3 spawnPlatformPosition = new Vector3(Random.Range(-spawnValues.x, spawnValues.x), 1, Random.Range(-spawnValues.z, spawnValues.z));

        Instantiate(coinPrefab, spawnPathPointPosition + pathPointInstantiate.TransformPoint(0, 0, 0), Quaternion.AngleAxis(angle, Vector3.forward));
        Instantiate(wallPrefab, spawnPlatformPosition + platformInstantiate.TransformPoint(0, 0, 0), Quaternion.AngleAxis(angle, Vector3.forward));    
    }
}

I'm making an endless runner game.

I have the script that make coins and walls appear at the same time in front of the player.

The problem is that sometimes the coin and wall appear in the same place/position.

How can I ensure that coins and walls do not appear in the same place/position?

public class Instantiate : MonoBehaviour
{
public float betweenSpawn = 1.05f;
public float angle;
public Vector3 spawnValues; //Range of appearing 
public GameObject coinPrefab;
public GameObject wallPrefab;

public Transform coinInstantiate;
public Transform wallInstantiate;

void Start()
{
    InvokeRepeating("Spawn", 0f, betweenSpawn);
}

void Spawn()
{
    Vector3 coinPosition = new Vector3(Random.Range(-spawnValues.x, spawnValues.x), 1, Random.Range(-spawnValues.z, spawnValues.z));
    Vector3 wallPosition = new Vector3(Random.Range(-spawnValues.x, spawnValues.x), 1, Random.Range(-spawnValues.z, spawnValues.z));

    Instantiate(coinPrefab, coinPosition + coinInstantiate.TransformPoint(0, 0, 0), Quaternion.AngleAxis(angle, Vector3.forward));
    Instantiate(wallPrefab, wallPosition + wallInstantiate.TransformPoint(0, 0, 0), Quaternion.AngleAxis(angle, Vector3.forward));    
}

}

I'm new in scripting. Before scripting, I just painting. Now I have little problem with coding. I'm making a runner and I have the script that make coins and walls appear at the same time in front of the player. But problem is that sometimes coin and wall appear in same place/position. How to do that coins and walls appear not in same place/position?

public class Instantiate : MonoBehaviour
{
public float betweenSpawn = 1.05f;
public float angle;
public Vector3 spawnValues; //Range of appearing 
public GameObject coinPrefab;
public GameObject wallPrefab;

public Transform pathPointInstantiate;
public Transform platformInstantiate;

void Start()
{
    InvokeRepeating("Spawn", 0f, betweenSpawn);
}

void Spawn()
{
    Vector3 spawnPathPointPosition = new Vector3(Random.Range(-spawnValues.x, spawnValues.x), 1, Random.Range(-spawnValues.z, spawnValues.z));
    Vector3 spawnPlatformPosition = new Vector3(Random.Range(-spawnValues.x, spawnValues.x), 1, Random.Range(-spawnValues.z, spawnValues.z));

    Instantiate(coinPrefab, spawnPathPointPosition + pathPointInstantiate.TransformPoint(0, 0, 0), Quaternion.AngleAxis(angle, Vector3.forward));
    Instantiate(wallPrefab, spawnPlatformPosition + platformInstantiate.TransformPoint(0, 0, 0), Quaternion.AngleAxis(angle, Vector3.forward));    
}
}

I'm making an endless runner game.

I have the script that make coins and walls appear at the same time in front of the player.

The problem is that sometimes the coin and wall appear in the same place/position. 

How can I ensure that coins and walls do not appear in the same place/position?

public class Instantiate : MonoBehaviour
{
    public float betweenSpawn = 1.05f;
    public float angle;
    public Vector3 spawnValues; //Range of appearing 
    public GameObject coinPrefab;
    public GameObject wallPrefab;

    public Transform pathPointInstantiate;
    public Transform platformInstantiate;

    void Start()
    {
        InvokeRepeating("Spawn", 0f, betweenSpawn);
    }

    void Spawn()
    {
        Vector3 spawnPathPointPosition = new Vector3(Random.Range(-spawnValues.x, spawnValues.x), 1, Random.Range(-spawnValues.z, spawnValues.z));
        Vector3 spawnPlatformPosition = new Vector3(Random.Range(-spawnValues.x, spawnValues.x), 1, Random.Range(-spawnValues.z, spawnValues.z));

        Instantiate(coinPrefab, spawnPathPointPosition + pathPointInstantiate.TransformPoint(0, 0, 0), Quaternion.AngleAxis(angle, Vector3.forward));
        Instantiate(wallPrefab, spawnPlatformPosition + platformInstantiate.TransformPoint(0, 0, 0), Quaternion.AngleAxis(angle, Vector3.forward));    
    }
}