+bool PlayerSAO::checkMovementCheat()
+{
+ if (isAttached() || m_is_singleplayer ||
+ g_settings->getBool("disable_anticheat")) {
+ m_last_good_position = m_base_position;
+ return false;
+ }
+
+ bool cheated = false;
+ /*
+ Check player movements
+
+ NOTE: Actually the server should handle player physics like the
+ client does and compare player's position to what is calculated
+ on our side. This is required when eg. players fly due to an
+ explosion. Altough a node-based alternative might be possible
+ too, and much more lightweight.
+ */
+
+ float player_max_speed = 0;
+
+ if (m_privs.count("fast") != 0) {
+ // Fast speed
+ player_max_speed = m_player->movement_speed_fast * m_physics_override_speed;
+ } else {
+ // Normal speed
+ player_max_speed = m_player->movement_speed_walk * m_physics_override_speed;
+ }
+ // Tolerance. The lag pool does this a bit.
+ //player_max_speed *= 2.5;
+
+ v3f diff = (m_base_position - m_last_good_position);
+ float d_vert = diff.Y;
+ diff.Y = 0;
+ float d_horiz = diff.getLength();
+ float required_time = d_horiz / player_max_speed;
+
+ if (d_vert > 0 && d_vert / player_max_speed > required_time)
+ required_time = d_vert / player_max_speed; // Moving upwards
+
+ if (m_move_pool.grab(required_time)) {
+ m_last_good_position = m_base_position;
+ } else {
+ const float LAG_POOL_MIN = 5.0;
+ float lag_pool_max = m_env->getMaxLagEstimate() * 2.0;
+ lag_pool_max = MYMAX(lag_pool_max, LAG_POOL_MIN);
+ if (m_time_from_last_teleport > lag_pool_max) {
+ actionstream << "Player " << m_player->getName()
+ << " moved too fast; resetting position"
+ << std::endl;
+ cheated = true;
+ }
+ setBasePosition(m_last_good_position);
+ }
+ return cheated;
+}
+
+bool PlayerSAO::getCollisionBox(aabb3f *toset) const
+{
+ *toset = aabb3f(-BS * 0.30, 0.0, -BS * 0.30, BS * 0.30, BS * 1.75, BS * 0.30);
+ toset->MinEdge += m_base_position;
+ toset->MaxEdge += m_base_position;
+ return true;