- SGPropertyNode *target_auto_hdg_node;
- SGPropertyNode *to_flag_node;
- SGPropertyNode *from_flag_node;
- SGPropertyNode *inrange_node;
- SGPropertyNode *cdi_deflection_node;
- SGPropertyNode *cdi_xtrack_error_node;
- SGPropertyNode *has_gs_node;
- SGPropertyNode *loc_node;
- SGPropertyNode *loc_dist_node;
- SGPropertyNode *gs_deflection_node;
- SGPropertyNode *gs_rate_of_climb_node;
- SGPropertyNode *gs_dist_node;
- SGPropertyNode *id_node;
- SGPropertyNode *id_c1_node;
- SGPropertyNode *id_c2_node;
- SGPropertyNode *id_c3_node;
- SGPropertyNode *id_c4_node;
-
- // unfiled
- SGPropertyNode *nav_serviceable_node;
- SGPropertyNode *cdi_serviceable_node;
- SGPropertyNode *gs_serviceable_node;
- SGPropertyNode *tofrom_serviceable_node;
- SGPropertyNode *nav_slaved_to_gps_node;
- SGPropertyNode *gps_cdi_deflection_node;
- SGPropertyNode *gps_to_flag_node;
- SGPropertyNode *gps_from_flag_node;
-
- string last_id;
- bool last_nav_vor;
- int nav_play_count;
- time_t nav_last_time;
-
- int index; // used for property binding
- string nav_fx_name;
- string dme_fx_name;
-
- // internal (unexported) values
- string nav_trans_ident;
- bool nav_valid;
- bool nav_has_dme;
- double nav_target_radial;
- double nav_loclon;
- double nav_loclat;
- double nav_x;
- double nav_y;
- double nav_z;
- double nav_gslon;
- double nav_gslat;
- double nav_elev; // use gs elev if available
- double nav_gs_x;
- double nav_gs_y;
- double nav_gs_z;
- sgdVec3 gs_base_vec;
- double nav_gs_dist_signed;
- SGTimeStamp prev_time;
- SGTimeStamp curr_time;
- double nav_range;
- double nav_effective_range;
- double nav_target_gs;
- double nav_twist;
+ SGPropertyNode_ptr target_auto_hdg_node;
+ // suggested autopilot heading
+ // to intercept selected radial
+ SGPropertyNode_ptr time_to_intercept; // estimated time to intecept selected
+ // radial at current speed and heading
+ SGPropertyNode_ptr to_flag_node;
+ SGPropertyNode_ptr from_flag_node;
+ SGPropertyNode_ptr inrange_node;
+ SGPropertyNode_ptr signal_quality_norm_node;
+ SGPropertyNode_ptr cdi_deflection_node;
+ SGPropertyNode_ptr cdi_deflection_norm_node;
+ SGPropertyNode_ptr cdi_xtrack_error_node;
+ SGPropertyNode_ptr cdi_xtrack_hdg_err_node;
+ SGPropertyNode_ptr has_gs_node;
+ SGPropertyNode_ptr loc_node;
+ SGPropertyNode_ptr loc_dist_node;
+ SGPropertyNode_ptr gs_deflection_node;
+ SGPropertyNode_ptr gs_deflection_deg_node;
+ SGPropertyNode_ptr gs_deflection_norm_node;
+ SGPropertyNode_ptr gs_direct_node;
+ SGPropertyNode_ptr gs_rate_of_climb_node;
+ SGPropertyNode_ptr gs_rate_of_climb_fpm_node;
+ SGPropertyNode_ptr gs_dist_node;
+ SGPropertyNode_ptr gs_inrange_node;
+ SGPropertyNode_ptr nav_id_node;
+ SGPropertyNode_ptr id_c1_node;
+ SGPropertyNode_ptr id_c2_node;
+ SGPropertyNode_ptr id_c3_node;
+ SGPropertyNode_ptr id_c4_node;
+
+ // gps slaving support
+ SGPropertyNode_ptr nav_slaved_to_gps_node;
+ SGPropertyNode_ptr gps_cdi_deflection_node;
+ SGPropertyNode_ptr gps_to_flag_node;
+ SGPropertyNode_ptr gps_from_flag_node;
+ SGPropertyNode_ptr gps_has_gs_node;
+ SGPropertyNode_ptr gps_course_node;
+ SGPropertyNode_ptr gps_xtrack_error_nm_node;
+ SGPropertyNode_ptr _magvarNode;
+
+ // realism setting, are false courses and GS lobes enabled?
+ SGPropertyNode_ptr falseCoursesEnabledNode;
+
+ // internal (private) values
+
+ bool _operable; ///< is the unit serviceable, on, powered, etc
+ int play_count;
+ bool _nav_search;
+ double _last_freq;
+ FGNavRecordRef _navaid;
+ FGNavRecordRef _gs;
+
+ double target_radial;
+ double effective_range;
+ double target_gs;
+ double twist;