How To Destroy An Item When It Touches Something?

• Attach a collision object to spear ( perhaps a box collider? )

• Attach another to the Man.

• check the (is trigger) box on both collision objects

• Attach a rigid body to spear

• probably wanna uncheck gravity on rigid body (I assuming you don't want the object you've given a rigid body too become effected by gravity, you can also check the box "is kinematic" as well.

• give the spear object a tag ("spear")

Attach this code to the man;

  function OnTriggerEnter ( other : Collider )
  {
      if ( other.collider.tag == "spear" )      
      {
          Destroy ( gameObject );
      } 
  }
 

Sorry I gave you the Javascript answer, I'm sure the C# version isn't far off.

edit: my bad I forgot the brackets on gameObject!

C# version, in case you use C#:

void OnTriggerEnter (Collider collider) { if (collider.gameObject.CompareTag ("TAG")) { Destroy (gameObject); } }

Place this on your "man" or player. Replace "TAG" with the tag of the item you are running into.