made wheel rotates and fixed collision - walls need box colliders adding

Assets/SpotController.cs

@@ -7,6 +7,8 @@ public class SpotController : MonoBehaviour
     public GameObject sphere;
     public GameObject visor;
 
+    public GameObject[] wheels;
+
     public AudioSource backgroundSource;
     public AudioSource sfxSource;
     public AudioSource interactSource;
@@ -21,9 +23,10 @@ public class SpotController : MonoBehaviour
     private float moveInput;
     private float turnInput;
 
-    private float turnSpeed = 50f;
+    private float turnSpeed = 150f;
 
     private Light light;
+    private bool blocked = false;
 
     private void Start()
     {
@@ -43,12 +46,37 @@ public class SpotController : MonoBehaviour
         turnInput = Input.GetAxisRaw("Horizontal");
 
         moveInput *= moveInput > 0 ? speed : revSpeed;
+
+        if (moveInput != 0 && wheels.Length > 0)
+        {
+            for (int i = 0; i < wheels.Length; i++)
+            {
+                wheels[i].transform.Rotate(0, 0, moveInput / 60 * 360 * Time.deltaTime);
+            }
+        }
 ;
         float newRotation = turnInput * turnSpeed * Time.deltaTime * Input.GetAxisRaw("Vertical");
         sphere.transform.Rotate(0, newRotation, 0, Space.Self);
 
         transform.position = sphere.transform.position;
         transform.rotation = sphere.transform.rotation;
+
+        RaycastHit hit;
+        if (Physics.Raycast(transform.position, transform.forward, out hit, 1))
+        {
+            if (hit.transform.tag == "Wall")
+            {
+                blocked = true;
+            }
+            else
+            {
+                blocked = false;
+            }
+        }
+        else
+        {
+            blocked = false;
+        }
     }
 
     IEnumerator FlashRoutine()
@@ -64,7 +92,6 @@ public class SpotController : MonoBehaviour
             renderer.material.SetColor("_EmissionColor", Random.ColorHSV(0f, 1f, 1f, 1f, 0.5f, 1f));
         }
     }
-
     private void LateUpdate()
     {
         if (moveInput != 0)
@@ -80,6 +107,7 @@ public class SpotController : MonoBehaviour
             sfxSource.Stop();
         }
 
-        sphere.transform.Translate(Vector3.forward * moveInput * Time.deltaTime, Space.Self);
+        if (!blocked && moveInput > 0)
+            sphere.transform.Translate(Vector3.forward * moveInput * Time.deltaTime, Space.Self);
     }
 }