IEnumerator Start()
{
var wanderingState = new Enemies.EnemyWandering.State(
settings.settings,
enemyAgent
);
StartCoroutine(wanderingState.Enter());
yield break;
}
IEnumerator Start()
{
var lastPosition = transform.position;
var animatorFSM = GetComponent <CharacterStateMachine>();
var health = GetComponent <UnitHealth>();
var player = GameObject.FindGameObjectWithTag("Player");
// Initialize states of the state machine
var heroSearchState = new EnemyNavMeshSearch.State(
heroSearch.settings,
navMeshAgent,
player.transform);
// Initialize states of the state machine
this.attackState = new EnemyAttack.State(
animatorFSM,
enemyAttackSettings.settings,
navMeshAgent,
player.transform);
var wanderingState = new EnemyWandering.State(
enemyWanderingSettings.settings,
navMeshAgent);
yield return(null);
// Initial positions
//agent.destination = agent.transform.position;
while (true)
{
var newState = state;
try
{
// Evaluate conditions to change the behaviour
{
switch (state)
{
case State.Idle:
{
newState = State.Wandering;
}
break;
case State.Wandering:
{
var distance = player.transform.position - transform.position;
var d = enemyAttackSettings.settings.detectDistance;
if (distance.sqrMagnitude < d * d)
{
newState = State.FollowHero;
}
}
break;
case State.FollowHero:
{
var distance = player.transform.position - transform.position;
var d = enemyAttackSettings.settings.attackDistance;
if (distance.sqrMagnitude < d * d)
{
newState = State.Attack;
}
var d2 = enemyAttackSettings.settings.detectDistance;
if (distance.sqrMagnitude > d2 * d2)
{
newState = State.Wandering;
}
}
break;
case State.Attack:
{
if (attackState.done)
{
newState = State.Idle;
}
}
break;
}
if (health != null && health.health <= 0)
{
newState = State.Dead;
}
}
// Always run
{
switch (newState)
{
case State.Idle:
{
animatorFSM.RequestChangePlayerState(CharacterStateMachine.CharacterState.idle);
}
break;
case State.FollowHero:
case State.Wandering:
{
if ((lastPosition - transform.position).sqrMagnitude < .1f)
{
animatorFSM.RequestChangePlayerState(CharacterStateMachine.CharacterState.idle);
}
else
{
animatorFSM.RequestChangePlayerState(CharacterStateMachine.CharacterState.walking);
}
}
break;
case State.Attack:
{
animatorFSM.RequestChangePlayerState(CharacterStateMachine.CharacterState.attacking);
}
break;
case State.Dead:
{
animatorFSM.RequestChangePlayerState(CharacterStateMachine.CharacterState.dead);
}
break;
}
/*
* // Ensure that the enemies are not on top of the enemies
* var distance = (transform.position - player.transform.position).normalized;
* if (distance.sqrMagnitude < 1)
* {
* transform.position = Vector3.Lerp(transform.position, player.transform.position + distance, 0.1f);
* }
*/
}
if (newState != state)
{
// Exit the previous state
if (lastCoroutine != null)
{
//Debug.Log("Stopping previous state " + state);
StopCoroutine(lastCoroutine);
switch (state)
{
case State.FollowHero:
heroSearchState.Exit();
break;
case State.Wandering:
wanderingState.Exit();
break;
case State.Attack:
attackState.Exit();
break;
}
}
//Debug.Log("Starting new state state " + newState);
// Enter the new state
switch (newState)
{
case State.FollowHero:
{
lastCoroutine = StartCoroutine(heroSearchState.Enter());
}
break;
case State.Wandering:
{
lastCoroutine = StartCoroutine(wanderingState.Enter());
}
break;
case State.Attack:
{
lastCoroutine = StartCoroutine(attackState.Enter());
}
break;
}
state = newState;
lastStateChange = Time.time;
}
}
catch (Exception e)
{
Debug.LogException(e);
newState = State.Idle;
}
yield return(null);
}
}