public FindFoodState(EntityStateMachine ownerFiniteStateMachine) : base(ownerFiniteStateMachine)
{
SeekBehaviour seekBehaviour = new SeekBehaviour(OwnerEntity.SeekTarget, OwnerEntity);
wanderBehaviour = new WanderBehaviour(OwnerEntity);
steeringBehaviours.Add(seekBehaviour);
steeringBehaviours.Add(new DistancingBehaviour(OwnerEntity));
steeringBehaviours.Add(new ObstacleAvoidance(OwnerEntity));
Name = "FindFood";
// If the entity doesn't have a target for some reason, try to find one
if (OwnerEntity.SeekTarget == null)
{
// try to find new target
seekBehaviour.NewTarget(OwnerEntity.SeekTarget);
// If it's still Null, no targets exist
}
}
public override void OnStateUpdate(GameTime gameTime)
{
// If the seekTarget is null, there are no valid targets. In that case,
// default back to wandering
// SeekTarget automatically tries to get a new target in the getter
if (OwnerEntity.SeekTarget == null && !isWandering)
{
steeringBehaviours.Add(wanderBehaviour);
isWandering = true;
}
else
{
// If it found a target, no longer wander
steeringBehaviours.Remove(wanderBehaviour);
isWandering = false;
SeekBehaviour seekbehaviour = (SeekBehaviour)steeringBehaviours[0];
seekbehaviour.NewTarget(OwnerEntity.SeekTarget);
}
base.OnStateUpdate(gameTime);
}