virtual void traffic_run()
{
// activities that may occur in the traffic flow
// std::cout << *this;
pursuit();
steps();
}
cocos2d::Vec2 SteeringBehaviors::calculate()
{
m_vSteeringForce.setPoint(0, 0);
/**
* 要知道每一种驱动力的优先级其实是不同的，比如需要首要保证人物之间不能重叠和
* 撞墙，然后才是arrive和seek
*/
if (On(WALL_AVOIDANCE) && !accumulateForce(m_vSteeringForce, wallAvoidance()))
{
return m_vSteeringForce;
}
if (On(SEPARATION) && !accumulateForce(m_vSteeringForce, separation()))
{
return m_vSteeringForce;
}
// @_@ 后来加入的外部牵引力，一般是不开放的
if (On(TRACTION) && !accumulateForce(m_vSteeringForce, m_traction))
{
return m_vSteeringForce;
}
if (On(SEEK) && !accumulateForce(m_vSteeringForce, seek(m_vTarget)))
{
return m_vSteeringForce;
}
if (On(ARRIVE) && !accumulateForce(m_vSteeringForce, arrive(m_vTarget)))
{
return m_vSteeringForce;
}
if (On(PURSUIT) && !accumulateForce(m_vSteeringForce, pursuit(m_targetId)))
{
return m_vSteeringForce;
}
auto tmpFormation = m_pOwner->getTeam()->getTeamFormation();
auto tmpFormationPosId = m_pOwner->getMovingEntity().getFormationPosId();
if (On(KEEP_FORMATION) && !accumulateForce(m_vSteeringForce, keepFormation(tmpFormation, tmpFormationPosId)))
{
return m_vSteeringForce;
}
return m_vSteeringForce;
}
