private void HandleHarvesting()
{
if (_resourceTarget == null || _resourceTarget.currentResources <= 0)
{
// no more resources
_currentState = HarvesterState.Idle;
_resourceTarget = null;
return;
}
var distance = (_entity.transform.position - _resourceTarget.transform.position).sqrMagnitude;
if (distance > (_entity.attackRadius * _entity.attackRadius))
{
// resource out of range
if (!_entity.isMoving)
{
_entity.MoveTo(_resourceTarget.GetHarvestingPosition(_entity));
}
return;
}
// resource within range
_entity.Harvest(_resourceTarget);
if (_entity.currentCarriedResources >= _entity.maxCarriableResources)
{
// harvester cannot carry more resources
_currentState = HarvesterState.Returning;
}
}
private void HandleIdle()
{
var observations = _entity.observations;
observations.Sort(new GameObjectDistanceSortComparer(this.transform.position));
var count = observations.Count;
for (int i = 0; i < count; i++)
{
var obs = observations[i];
var otherUnit = obs.GetComponent <UnitBase>();
if (otherUnit != null)
{
if (_entity.IsAllied(otherUnit))
{
// don't flee from allies
continue;
}
if ((otherUnit.transform.position - _entity.transform.position).sqrMagnitude > (_entity.fleeRadius * _entity.fleeRadius))
{
// enemy is outside of flee radius
continue;
}
_fleeTarget = otherUnit;
_currentState = HarvesterState.Fleeing;
return;
}
var resource = obs.GetComponent <ResourceComponent>();
if (resource != null)
{
_resourceTarget = resource;
_currentState = HarvesterState.Harvesting;
return;
}
}
// nothing interesting in memory, do some random wandering
if (!_entity.isMoving)
{
_entity.RandomWander();
}
}
/// <summary>
/// Harvests the specified resource.
/// </summary>
/// <param name="resource">The resource.</param>
/// <exception cref="ArgumentNullException">resource</exception>
public void Harvest(ResourceComponent resource)
{
if (resource == null)
{
throw new ArgumentNullException("resource");
}
var time = Time.time;
if (time - _lastAttack < 1f / _attacksPerSecond)
{
return;
}
_lastAttack = time;
resource.Harvest(this);
}