/// <summary>
/// Update the mover.
/// </summary>
/// <remarks>
/// <para>
/// This method will never fail.
/// </para>
/// <para>
/// With the exception of forced moves, updates will temporarily halt during planner
/// failure.
/// </para>
/// </remarks>
/// <returns>True. (Never returns false.)</returns>
public bool Update()
{
Transform trans = agent.transform;
if ((agent.data.flags & NavFlag.ForceMove) != 0)
{
agent.data.position = agent.data.goal;
if ((agent.data.flags & NavFlag.GoalRotationEnabled) != 0)
{
agent.data.rotation = agent.data.goalRotation;
}
agent.transform.position = agent.data.position.point;
agent.transform.rotation = agent.data.rotation;
agent.data.flags =
(agent.data.flags | NavFlag.HasNewPosition) & ~NavFlag.ForceMove;
Debug.Log(agent.transform.name + ": Force Move");
return(true);
}
// Note: Keep this after the force move handling.
if ((agent.data.flags & NavFlag.PlannerFailed) != 0)
{
// Planner has failed. Early exit.
return(true);
}
agent.data.position = agent.data.desiredPosition;
trans.position = agent.data.position.point;
Quaternion rotation = agent.data.rotation;
if ((agent.data.flags & NavFlag.GoalRotationEnabled) != 0 &&
agent.IsNear(agent.data.position.point, agent.data.goal.point))
{
// Close to goal. So use the goal rotation.
rotation = agent.data.goalRotation;
}
else if (agent.data.desiredSpeedSq > agent.agentGroup.turnThreshold)
{
// Agent is not near the goal, so use the planner's rotation.
// The conditional test prevents unnecessary seeking
// at low speeds.
rotation = Quaternion.LookRotation(
new Vector3(agent.data.desiredVelocity.x, 0, agent.data.desiredVelocity.z));
}
trans.rotation = Quaternion.Slerp(
trans.rotation, rotation, Time.deltaTime * agent.agentGroup.maxTurnSpeed);
agent.data.rotation = trans.rotation;
return(true);
}
/// <summary>
/// Manages the crowd agent target, replanning the long distance path if needed.
/// </summary>
/// <returns>False on critical failure.</returns>
private bool HandleNormalPlanning(bool hasNewGoal)
{
// Re-targetting will only occur if there is a new goal or getting close to an
// intermediate target.
if (hasNewGoal ||
!mGoalInRange && agent.IsNear(agent.data.desiredPosition.point, mTarget.point))
{
// First try to set the target without replanning.
if (!SetLocalTarget())
{
// This can happen when approaching the target from
// outside the planned path, which can happen when
// the crowd manager takes a different path.
// (Or a new goal was set.)
if (agent.PlanPath(agent.data.desiredPosition, agent.data.plannerGoal) <= 0)
{
// Critical failure.
Debug.LogError(string.Format(
"{0}: Path replan failed. Position: {1}, Goal: {2}"
, agent.transform.name
, agent.data.desiredPosition.ToString()
, agent.data.plannerGoal.ToString()));
return(false);
}
// Next call should not not fail since the path is known to be good.
return(SetLocalTarget());
}
}
else if (mGoalInRange)
{
/*
* Need to monitor to see if the goal has been reached. This can be tricky.
* The optimal 'at' and 'near' range ranges are usually too restrictive and too
* large respectively. So a fixed value, based on experience, is used instead.
* (OK to make this value configurable.)
*
* Assumption: Other parts of the code detect if a re-evaluation of position
* is needed.
*/
if (mAtGoalState == StateNormal)
{
if (Vector3Util.IsInRange(agent.data.desiredPosition.point
, agent.data.plannerGoal.point
, 0.12f, agent.data.heightTolerence))
{
// Remove from the crowd and add back, exactly at the goal with a zero max
// speed. Basically, puts a static obstacle into the crowd.
mAtGoalState = StateInRange;
agent.RemoveFromCrowd();
CrowdAgentParams config = agent.crowdConfig;
config.maxSpeed = 0;
agent.crowdAgent =
agent.navGroup.crowd.AddAgent(agent.data.plannerGoal.point, config);
agent.data.flags &= ~NavFlag.CrowdConfigUpdated;
// Debug.Log("Transition to 'at goal' task.");
}
}
}
return(true);
}