void Awake()
{
allyBehave = GetComponent <AllyBehave>();
hero = GameObject.FindWithTag("Player");
CUR_STATE = AllayState.STANDBY;
debugTime = 1f;
startRecord = Time.time;
lastPos = transform.position;
}
void FixedUpdate()
{
// debug if the ally is at the same position for 2 seconds
if (Time.time > startRecord + debugTime)
{
startRecord = Time.time;
if (Mathf.Abs(transform.position.x - lastPos.x) < 0.02f)
{
CUR_STATE = AllayState.STANDBY;
return;
}
else
{
lastPos = transform.position;
}
}
// instantiate enemy and lastAttackEnmemy
if (hero.GetComponent <PlayerController>().IsOnGround())
{
enemy = allyBehave.FindClosestEnemy(hero);
}
// if ally is having a bug, restart it
if (allyBehave.IsRestarted())
{
CUR_STATE = AllayState.STANDBY;
transform.position = Vector3.MoveTowards(transform.position, allyBehave.TransferPostion(hero), Mathf.Infinity);
return;
}
// check if the allly is in the the camera view
// if not, transfer it to player position, swithch state to following
if (!IsInView(transform.position))
{
// if the player is alive, transfer its to the player's position
transform.position = Vector3.MoveTowards(transform.position, allyBehave.TransferPostion(hero), Mathf.Infinity);
if (lastAttackEnemy != null && lastAttackEnemy.GetComponent <EnemyHealth>().IsAlive())
{
lastAttackEnemy.GetComponent <EnemyHealth>().AllyLeft();
}
CUR_STATE = AllayState.STANDBY;
}
// state machine
switch (CUR_STATE)
{
case AllayState.STANDBY:
allyBehave.WaitForPlayer();
if (IsPlayerClosed() && hero.activeSelf)
{
allyBehave.SwitchTarget(hero, true);
CUR_STATE = AllayState.FOLLOW;
}
else if (!hero.activeSelf)
{
enemy.GetComponent <EnemyHealth>().AllyLeft();
}
break;
case AllayState.FOLLOW:
// if the ally is already finished the swtichTarget process, move towards player; else, continue
if (allyBehave.IsOnNextPoint())
{
allyBehave.MoveToTarget(hero, true);
}
else
{
allyBehave.MoveToNextPoint();
}
// if the enemy is closed and the enemy is in the camera range, attack towards it
if (enemy != null && IsEnemyClosed() && IsInView(enemy.transform.position) && !allyBehave.IsAllyJumping())
{
allyBehave.SwitchTarget(enemy, false);
CUR_STATE = AllayState.TOWARDENEMY;
}
break;
case AllayState.TOWARDENEMY:
// check if the current targeting enemy is the same as last time
if (enemy != null && lastAttackEnemy != null && enemy.name != lastAttackEnemy.name)
{
lastAttackEnemy.GetComponent <EnemyHealth>().AllyLeft();
lastAttackEnemy = enemy;
allyBehave.SwitchTarget(enemy, false);
}
// if the player has gone far away or the attacking enemy is dead, move towards player
if (!allyBehave.IsAllyJumping() && (CheckIfPlayerLongGone() || lastAttackEnemy == null))
{
if (CheckIfPlayerLongGone())
{
enemy.GetComponent <EnemyHealth>().AllyLeft();
}
lastAttackEnemy = enemy;
allyBehave.SwitchTarget(hero, true);
CUR_STATE = AllayState.FOLLOW;
break;
}
if (!hero.activeSelf)
{
CUR_STATE = AllayState.STANDBY;
break;
}
// if the ally is already finished the swtichTarget process, move towards enemy; else, continue
if (allyBehave.IsOnNextPoint())
{
allyBehave.MoveToTarget(enemy, false);
}
else
{
allyBehave.MoveToNextPoint();
}
break;
}
}
