unity3d - Unity2D C# - Can't destroy an Instantiated object - 


public class playerattack : monobehaviour {  public bool attacking = false;  public transform player; public transform swordobject_prefab; animator anim;  gameobject clone = null;  // use initialization void start () {     anim = getcomponent<animator> (); }  // update called once per frame void update () {     if (!attacking && !anim.getbool ("isswimming"))             attackcode ();     if (attacking)         cooldown (); }  void attackcode(){      if (input.getbuttondown ("attacka")) {         debug.log ("attack_a");         anim.setbool ("isattackinga", true);         attacking = true;         clone = (gameobject)instantiate(swordobject_prefab, player.position, quaternion.identity);         destroy(clone);      }      if (input.getbuttondown ("attackb")) {         anim.setbool ("isattackingb", true);     }  }  void cooldown(){     if (!anim.getcurrentanimatorstateinfo(0).isname ("swordswing")) {         attacking = false;         anim.setbool ("isattackinga", false);      } }

here's code. im trying when player presses button, swings sword spawning @ players location. works fine, when try remove sword error in unity:

invalidcastexception: cannot cast source type destination type. playerattack.attackcode () (at assets/scripts/player/playerattack.cs:33) playerattack.update () (at assets/scripts/player/playerattack.cs:22)

thanks advice.

by way, if knows of better way use weapons in unity2d open suggestions if way cumbersome way of doing things.

you must instantiate prefabs this.

prefabtypeobject obj = (typeofprefab)instantiate(prefab, position, rotation);

or

prefabtypeobject obj = instantiate(prefab, position, rotation) typeofprefab;

otherwise null object or invalidcastexception now.

your solution is`

clone = (gameobject)instantiate(swordobject_prefab.gameobject, player.position, quaternion.identity);

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