private void Update()
{
switch (state)
{
case EnemyStates.FindTarget:
{
_anim.SetBool("IsRunning", false);
_anim.SetBool("IsReturning", false);
if (target == null || target.takenByEnemy)
{
target = ItemsManager.instance.GetRandomTarget();
}
if (target != null)
{
state = EnemyStates.ChaseTarget;
}
break;
}
case EnemyStates.ChaseTarget: {
if (target == null || target.takenByEnemy)
{
state = EnemyStates.FindTarget;
break;
}
_anim.SetBool("IsRunning", true);
_anim.SetBool("IsReturning", false);
_agent.SetDestination(target.transform.position);
// check if reached target
float distanceFromItem = Vector3.Magnitude(target.transform.position - transform.position);
if (distanceFromItem <= _agent.stoppingDistance + 0.8f)
{
// enemy reached target, take it
state = EnemyStates.TakeTarget;
break;
}
break;
}
case EnemyStates.TakeTarget: {
if (target == null)
{
break;
}
// disable interaction of target
target.DisableInteraction();
// set target's takenByEnemy
target.takenByEnemy = true;
// position and parent target
target.transform.position = grabPosition.position;
target.transform.rotation = grabPosition.rotation;
target.transform.parent = grabPosition;
state = EnemyStates.GoCheckout;
break;
}
case EnemyStates.GoCheckout: {
// animation
_anim.SetBool("IsRunning", false);
_anim.SetBool("IsReturning", true);
// return to checkout area
Vector3 checkoutPos = checkoutPoint.position;
_agent.SetDestination(checkoutPos);
// check if reached checkout area
float distanceFromCheckout = Vector3.Magnitude(checkoutPos - transform.position);
if (distanceFromCheckout <= _agent.stoppingDistance + 1f)
{
// reached checkout area, drop item
DropTarget();
state = EnemyStates.FindTarget;
break;
}
break;
}
case EnemyStates.Idle:
{
_anim.SetBool("IsRunning", false);
_anim.SetBool("IsReturning", false);
_agent.isStopped = true;
break;
}
}
}