+ //check if there's a line of sight between two positions
+ bool line_of_sight(v3f pos1, v3f pos2, float stepsize=1.0);
+
+ u32 getGameTime() { return m_game_time; }
+
+ void reportMaxLagEstimate(float f) { m_max_lag_estimate = f; }
+ float getMaxLagEstimate() { return m_max_lag_estimate; }