public override void Execute()
{
entity.Rotate(entity.target.position - entity.transform.position, entity.chaseSpeed);
if (Time.time > entity.nextAttack)
{
// First check if the target is still visible.
if (entity.LookForTarget() == false)
{
EnemySearchState newState = new EnemySearchState(entity.transform.position, entity.target.position - entity.transform.position);
entity.stateMachine.ChangeState(newState);
}
else if (Vector3.Distance(entity.transform.position, entity.target.position) > entity.attackRange)
{
// If the target is out of the attack range, look for it again.
EnemySearchState newState = new EnemySearchState(entity.transform.position, entity.target.position - entity.transform.position);
entity.stateMachine.ChangeState(newState);
}
else
{
entity.Attack();
entity.nextAttack = Time.time + entity.attackRate;
}
}
}
public override void Execute()
{
entity.Move(entity.target.position - entity.transform.position, entity.chaseSpeed);
if (Time.time > timeToCheck)
{
if (entity.LookForTarget() == false)
{
// Enter seach state.
EnemySearchState newState = new EnemySearchState(lastTargetPosition + entity.transform.forward * 2.0f, entity.target.position - lastTargetPosition);
entity.stateMachine.ChangeState(newState);
}
else
{
if (Vector3.Distance(entity.transform.position, entity.target.position) < entity.attackRange - entity.controller.radius)
{
EnemyAttackState newState = new EnemyAttackState();
entity.stateMachine.ChangeState(newState);
}
else
{
lastTargetPosition = entity.target.position;
timeToCheck = Time.time + 0.2f; // Check with more frecuency, because the enemy is chasing.
}
}
}
}
private static EnemySearchState _instance; //only declared once
private EnemySearchState() //set instance to itself
{
if (_instance != null)
{
return;
}
_instance = this;
}
public override void Alert(Vector3 alertSource)
{
// Search the source of the alert...
if (stateMachine.currentState is EnemyPatrolState)
{
if (alertSource == Vector3.zero) // This call is done from TakeDamage().
{
alertSource = target.position;
}
EnemySearchState newState = new EnemySearchState(alertSource + transform.forward * 2.0f, transform.forward);
stateMachine.ChangeState(newState);
}
}