Question by dyach3579 · Jun 30, 2019 at 06:39 PM · c#scripting problem unity 2d

How to gradually increase Obstacle holders speed over a certain period

Hi, Im building a 2d Endless Runner where my obstacle holders are spawning on the X axis, moving left. At first I was going to just have each holder spawn at a random speed each time, but i realized that can be challenging because sometimes, right when the game starts, the first holder may spawn really quick.

So now I would like the Obstacle holders to start of a little slower, like a speed of .03f and gradually move up in speed as the game goes on. After a certain amount of seconds.

How would I go about doing this in the code? I have some code that I found from a previous question here on unity, but it doesn't work. The holder spawns, and then it doesn't move. I had someone help me with this spawner script I posted here, and I also posted my Obstacle movement script where i tried to add the Gradual speed increase. Im new to Unity and coding so any help on improving this code is most appreciated. Thank you.

 public class ObstacleMovement : MonoBehaviour
 {
     private Rigidbody rb;    
     public float speed;      
     public float acceleration;
  
     public float moveSpeed;          
    
     public int ColorID;         
     public bool isEnemy = false;              
  
 private void Awake()         
 {             
     moveSpeed = Random.Range(0.03f, 0.03f);  //was .03 and .06         
 }              
  
 void Start()
  {
         rb = GetComponent<Rigidbody>();
         rb.velocity = -transform.forward * speed;
  }              
  
 void Update()         
 {
        speed += Time.deltaTime * acceleration;                   
        rb.velocity = -transform.forward * speed;                  
  
       Vector3 currentpos = transform.position;             
       currentpos.x -= moveSpeed; //* Time.deltaTime;             
       transform.position = currentpos;                  
  
       if (transform.position.x < -5f)             
       {                 
         Destroy(gameObject);             
       }         
   }              
  
 private void FixedUpdate()         
 {    
    //rb.velocity = Vector2.up * (-moveSpeed);
  }

And here is my spawner script im using

 public class Spawner : MonoBehaviour
 {
     [SerializeField] GameObject[] obstacles;
     [SerializeField] Transform obstaclesPos;
  
     Transform[] lastPoss;
     float[] lastSpeed;
  
     private void Awake()
     {
         lastPoss = new Transform[obstaclesPos.childCount];
         lastSpeed = new float[obstaclesPos.childCount];
  
         for (int i = 0; i < lastSpeed.Length; i++)
         {
             lastSpeed[i] = -1;
         }
     }
  
     void Start()
     {
         // StartObstaclesMove();
     }
  
     public void StartObstaclesMove()
     {
         StartCoroutine(InstanteObstacels(6f));
     }
  
     IEnumerator InstanteObstacels(float dt)
     {
      
         yield return new WaitForSeconds(dt);
  
         if (GameManager.instance.bGameStarted)
         {
             int rr = Random.Range(0, obstaclesPos.childCount);
  
             Transform tt = obstaclesPos.GetChild(rr);
             int randomObstacle = Random.Range(0, obstacles.Length);
  
             GameObject obs = GameObject.Instantiate(obstacles[randomObstacle]);
             obs.transform.position = tt.position;
  
             if (canGo(rr, obs.transform.position.x, obs.GetComponent<ObstacleMovement>().moveSpeed))
             {
                 lastPoss[rr] = obs.transform;
                 lastSpeed[rr] = obs.GetComponent<ObstacleMovement>().moveSpeed;
             }
             else
             {
                 Destroy(obs);
             }
  
             StartCoroutine(InstanteObstacels(dt));
         }
     }
  
     bool canGo(int rr, float x1, float s1)
     {
  
         if (lastPoss[rr] == null || lastSpeed[rr] < 0) return true;
  
         float x = lastPoss[rr].position.x;
         float s = lastSpeed[rr];
  
         float t1, t2;
  
         t1 = (x + 10) / s;
         t2 = (x1 + 10) / s1;
  
         if (t2 > t1) return true;
  
         return false;
     }
 }

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