var hitPoints = 3;
  
  var explosionPrefab : Transform;
  var deadModelPrefab : Transform;
  var healthPrefab : DroppableMover;
  var fuelPrefab : DroppableMover;
  var dropMin = 0;
  var dropMax = 0;
  
  // sound clips:
  var struckSound : AudioClip;
  
  private var dead = false;
  
  function ApplyDamage (damage : int)
  {
          // we've been hit, so play the 'struck' sound. This should be a metallic 'clang'.
          if (audio && struckSound)
                  audio.PlayOneShot(struckSound);
  
          if (hitPoints <= 0)
                  return;
  
          hitPoints -= damage;
          if (!dead && hitPoints <= 0)
          {
                  Die();
                  dead = true;
          }
  }
  
  function Die ()
  {        
          // Kill ourselves
          Destroy(gameObject);
          
          // Instantiate replacement dead character model
          var deadModel = Instantiate(deadModelPrefab, transform.position, transform.rotation);
          CopyTransformsRecurse(transform, deadModel);
          
          // create an effect to let the player know he beat the enemy
          var effect : Transform = Instantiate(explosionPrefab, transform.position, transform.rotation);
          effect.parent = deadModel;
          
          // fall away from the player, and spin like a top
          var deadModelRigidbody = deadModel.rigidbody;
          var relativePlayerPosition = transform.InverseTransformPoint(Camera.main.transform.position);
          deadModelRigidbody.AddTorque(Vector3.up * 7);
          if (relativePlayerPosition.z > 0)
                  deadModelRigidbody.AddForceAtPosition(-transform.forward * 2, transform.position + (transform.up * 5), ForceMode.Impulse);
          else
                  deadModelRigidbody.AddForceAtPosition(transform.forward * 2, transform.position + (transform.up * 2), ForceMode.Impulse);
          
          // drop a random number of pickups in a random fashion
          var toDrop = Random.Range(dropMin, dropMax + 1);        // how many shall we drop?
          for (var i=0;i<toDrop;i++)
          {
                  direction = Random.onUnitSphere;        // pick a random direction to throw the pickup.
                  if(direction.y < 0)
                          direction.y = -direction.y;        // make sure the pickup isn't thrown downwards
                  
                  // initial position of the pickup
                  var dropPosition = transform.TransformPoint(Vector3.up * 1.5) + (direction / 2);
          
                  var dropped : DroppableMover;
  
                  // select a pickup type at random
                  if(Random.value > 0.5)
                          dropped = Instantiate(healthPrefab, dropPosition, Quaternion.identity);
                  else
                          dropped = Instantiate(fuelPrefab, dropPosition, Quaternion.identity);
  
                  // set the pickup in motion
                  dropped.Bounce(direction * 4 * (Random.value + 0.2));
          }
  }
  
  /* 
  deadModel        When we instantiate the death sequence prefab, we ensure all its child 
          elements are the same as those in the original robot, by copying all 
          the transforms over. Hence this function.
  */
  
  static function CopyTransformsRecurse (src : Transform,  dst : Transform)
  {
          dst.position = src.position;
          dst.rotation = src.rotation;
          
          for (var child : Transform in dst)
          {
                  // Match the transform with the same name
                  var curSrc = src.Find(child.name);
                  if (curSrc)
                          CopyTransformsRecurse(curSrc, child);
          }
  }
  
  @script AddComponentMenu("Third Person Enemies/Enemy Damage")