/** This function sets the steering.
* \param dt Time step size.
*/
void ArenaAI::handleArenaSteering(const float dt)
{
const int current_node = getCurrentNode();
if (current_node == BattleGraph::UNKNOWN_POLY ||
m_target_node == BattleGraph::UNKNOWN_POLY) return;
if (m_target_node == current_node)
{
// Very close to the item, steer directly
checkPosition(m_target_point, &m_cur_kart_pos_data);
#ifdef AI_DEBUG
m_debug_sphere->setPosition(m_target_point.toIrrVector());
#endif
if (m_cur_kart_pos_data.behind)
{
m_adjusting_side = m_cur_kart_pos_data.on_side;
m_is_uturn = true;
}
else
{
float target_angle = steerToPoint(m_target_point);
setSteering(target_angle, dt);
}
return;
}
else if (m_target_node != current_node)
{
findPortals(current_node, m_target_node);
stringPull(m_kart->getXYZ(), m_target_point);
if (m_path_corners.size() > 0)
m_target_point = m_path_corners[0];
checkPosition(m_target_point, &m_cur_kart_pos_data);
#ifdef AI_DEBUG
m_debug_sphere->setPosition(m_target_point.toIrrVector());
#endif
if (m_cur_kart_pos_data.behind)
{
m_adjusting_side = m_cur_kart_pos_data.on_side;
m_is_uturn = true;
}
else
{
float target_angle = steerToPoint(m_target_point);
setSteering(target_angle, dt);
}
return;
}
else
{
// Do nothing (go straight) if no targets found
setSteering(0.0f, dt);
return;
}
} // handleSteering
/** This function config the steering (\ref m_steering_angle) of AI.
*/
void ArenaAI::configSteering()
{
m_steering_angle = 0.0f;
const int current_node = getCurrentNode();
if (current_node == Graph::UNKNOWN_SECTOR ||
m_target_node == Graph::UNKNOWN_SECTOR)
{
return;
}
if (ignorePathFinding())
{
// Steer directly, don't brake
m_turn_radius = 100.0f;
#ifdef AI_DEBUG
m_debug_sphere->setPosition(m_target_point.toIrrVector());
#endif
if (m_target_point_lc.z() < 0)
{
m_is_uturn = true;
m_reverse_point = m_target_point;
}
else
{
m_steering_angle = steerToPoint(m_target_point);
}
return;
}
// Otherwise use path finding to get target point
Vec3 target_point;
const bool found_position = updateAimingPosition(&target_point);
if (found_position)
{
m_target_point = target_point;
m_target_point_lc = m_kart->getTrans().inverse()(m_target_point);
#ifdef AI_DEBUG
m_debug_sphere->setVisible(true);
m_debug_sphere->setPosition(m_target_point.toIrrVector());
#endif
if (m_target_point_lc.z() < 0)
{
m_is_uturn = true;
m_reverse_point = m_target_point;
}
else
{
m_steering_angle = steerToPoint(m_target_point);
}
}
} // configSteering
