/// <summary>
/// Explicitly define default state transitions here
/// </summary>
/// <param name="eventObject">Event object.</param>
void HandleStateFinished(EventObject eventObject)
{
if (IsDead())
{
return;
}
switch (_currentAction)
{
case EnemyActionType.Idle:
// After idle time is over, start walking in random places
PushAction(EnemyActionType.Wandering);
break;
case EnemyActionType.Wandering:
// Return to previous state which should always be idle
PopAction();
break;
case EnemyActionType.Hit:
// After zombie got shot, automatically trigger attention
// and start chasing the player who made the shot
PopAction();
if (_currentAction != EnemyActionType.Screaming &&
_currentAction != EnemyActionType.Following &&
_currentAction != EnemyActionType.Attacking)
{
ChangeAction(EnemyActionType.Screaming);
}
break;
case EnemyActionType.Screaming:
// After the attention animation, start chasing player
ChangeAction(EnemyActionType.Following);
break;
case EnemyActionType.Attacking:
// Go back to previous state which is always FollowState
PopAction();
break;
default:
// default back to idle state
ChangeAction(EnemyActionType.Idle);
break;
}
}
/// <summary>
/// Explicitly define state transitions based on external signals
/// like collisions, sound, light, etc...
/// </summary>
/// <param name="eventObject">Event object.</param>
void HandleSensorDetected(EventObject eventObject)
{
if (IsDead())
{
return;
}
switch (eventObject.EventName)
{
// when player is within line of sight of player
case EnemySensors.EVENT_PLAYER_VISIBLE:
GameObject playerObject = (GameObject)eventObject.GetParam(0);
player = playerObject.transform.root;
if (_currentAction != EnemyActionType.Screaming &&
_currentAction != EnemyActionType.Following &&
_currentAction != EnemyActionType.Attacking)
{
ChangeAction(EnemyActionType.Screaming);
}
break;
case EnemySensors.EVENT_PLAYER_HIDDEN:
player = null;
if (_currentAction == EnemyActionType.Screaming ||
_currentAction == EnemyActionType.Following)
{
ChangeAction(EnemyActionType.Idle);
}
break;
// when player is within reach of zombie
// - either try to kill the player
// - or start eating *nomnomnom*
case EnemySensors.EVENT_PLAYER_WITHIN_REACH:
PlayerStatus playerStatus = (PlayerStatus)eventObject.GetParam(0);
player = playerStatus.transform.root;
if (playerStatus.HitPoint > 0f)
{
if (_currentAction != EnemyActionType.Following)
{
ChangeAction(EnemyActionType.Following);
}
if (_currentAction != EnemyActionType.Attacking)
{
PushAction(EnemyActionType.Attacking);
}
}
else
{
if (_currentAction != EnemyActionType.Eating)
{
ChangeAction(EnemyActionType.Eating);
}
}
break;
case EnemySensors.EVENT_PLAYER_OUT_OF_REACH:
PopAction();
break;
case EnemySensors.EVENT_ZOMBIE_DAMAGED:
PushAction(EnemyActionType.Hit);
break;
case EnemySensors.EVENT_ZOMBIE_DIED:
ChangeAction(EnemyActionType.Dead);
break;
default:
Debug.Log("Unknown sensor event: " + eventObject.EventName);
break;
}
}
