c# - How To Fix 'Array index is out of range error' In Unity3D -

i've been following block breaker section of course learn code making games (in unity 4.6.3) on udemy. decided take different path on game , challenge myself. have issues. idea when ball hits collider (named losecollider) @ bottom of screen, player lose 1 life (of there 5). can see screen shot below of game far, there 5 hearts, each sprite attached. want have ball hit losecollider , change sprite of hearts according how many times losecollider hit. keep getting error message:

here code:

using unityengine; using system.collections; using unityengine.ui;  public class losecollider : monobehaviour {  private levelmanager levelmanager;  public sprite[] lives;  public gameobject lives1; public gameobject lives2; public gameobject lives3; public gameobject lives4; public gameobject lives5;  private int amounthit; private int maxhit = 5;   void start () {     levelmanager = gameobject.findobjectoftype<levelmanager>(); }  void ontriggerenter2d (collider2d trigger) {     print ("trigger"); }  void oncollisionenter2d (collision2d collision) {     loadsprites ();     print ("collider");     amounthit++;     print (amounthit);     if(amounthit == maxhit){         levelmanager.loadlevel("lose");     } }  void loadsprites () {     int spriteindex = 1;      lives1.getcomponent<spriterenderer>().sprite = lives[spriteindex];      if(amounthit >= 1){         print ("hit 1");         lives1.getcomponent<spriterenderer>().sprite = lives[spriteindex];     } else if(amounthit >= 2){         print ("hit 2");         lives2.getcomponent<spriterenderer>().sprite = lives[spriteindex];     } else if(amounthit >= 3){         print ("hit 3");         lives3.getcomponent<spriterenderer>().sprite = lives[spriteindex];     } else if(amounthit >= 4){         print ("hit 4");         lives4.getcomponent<spriterenderer>().sprite = lives[spriteindex];     } else if(amounthit >= 5){         print ("hit 5");         lives5.getcomponent<spriterenderer>().sprite = lives[spriteindex];     } } 

and screenshot of game:

from code:

int spriteindex = 1; lives1.getcomponent<spriterenderer>().sprite = lives[spriteindex]; 

have filled lives array something? trying access array index >= size of array cause error yours. it's hard without knowing you've filled lives array editor, i'd start setting spriteindex 0.