Unity Script Generated by ScripterAI

"a infinite runner"

Here's a simple script for an infinite runner in Unity:

```csharp
using UnityEngine;

public class InfiniteRunner : MonoBehaviour
{
    public float moveSpeed = 5f;
    public float spawnRate = 1f;
    public GameObject[] obstacles;
    public Transform spawnPoint;

private float timer;

void Update()
    {
        // Move the player forward
        transform.Translate(Vector3.forward * moveSpeed * Time.deltaTime);

// Spawn obstacles
        timer += Time.deltaTime;
        if (timer >= spawnRate)
        {
            SpawnObstacle();
            timer = 0;
        }
    }

void SpawnObstacle()
    {
        int randomIndex = Random.Range(0, obstacles.Length);
        GameObject obstacle = Instantiate(obstacles[randomIndex], spawnPoint.position, Quaternion.identity);
        Destroy(obstacle, 10f); // Destroy the obstacle after 10 seconds to save memory
    }
}
```

This script will move the player forward at a constant speed and spawn obstacles at a specified rate. Attach this script to your player object and make sure to set up the obstacles and spawn point in the Inspector.