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  | using System; 
 |  using UnityEngine; 
 |  using UnityEngine.UI; 
 |    
 |    
 |  [RequireComponent(typeof(Text))] 
 |  public class RollNumber:MonoBehaviour { 
 |    
 |      [SerializeField] 
 |      Text m_Text; 
 |      public Text text { 
 |          get { 
 |              return m_Text; 
 |          } 
 |      } 
 |    
 |      float to = 0; 
 |      float from = 0; 
 |      float now = 0; 
 |    
 |      float duration = 0f; 
 |      float timer = 0f; 
 |      Action endCallBack = null; 
 |    
 |      public void Perform(int _from,int _to,float _duration,Action _callBack) { 
 |          ResetTimer(); 
 |          duration = Mathf.Clamp(_duration,0f,float.MaxValue); 
 |          from = _from; 
 |          to = _to; 
 |          endCallBack = _callBack; 
 |      } 
 |    
 |      private void LateUpdate() { 
 |          if(timer < duration) { 
 |              timer += Time.deltaTime; 
 |              now = Mathf.Lerp(from,to,Mathf.Clamp01(timer / duration)); 
 |              if(timer > duration) { 
 |                  ResetTimer(); 
 |                  now = to; 
 |                  if(endCallBack != null) { 
 |                      endCallBack(); 
 |                      endCallBack = null; 
 |                  } 
 |              } 
 |    
 |              if(text != null) { 
 |                  var nowInt = (int)now; 
 |                  text.text = nowInt.ToString(); 
 |              } 
 |          } 
 |      } 
 |    
 |      private void ResetTimer() { 
 |          timer = 0f; 
 |          duration = 0f; 
 |      } 
 |  } 
 |  
  |