From eedbfddbf12947063288f361d14b0e2b5c621a1a Mon Sep 17 00:00:00 2001
From: curt <curt>
Date: Mon, 10 Jan 2000 21:06:39 +0000
Subject: [PATCH] Added Mach Number to hud. Change reported speed on hud from
 V_equiv_kts to V_calibrated_kts.

---
 src/Cockpit/cockpit.cxx |  8 +++++++-
 src/Cockpit/hud.cxx     | 20 ++++++++++++++++++++
 src/Cockpit/hud.hxx     |  1 +
 3 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/src/Cockpit/cockpit.cxx b/src/Cockpit/cockpit.cxx
index 2ec6736f6..587dd59d1 100644
--- a/src/Cockpit/cockpit.cxx
+++ b/src/Cockpit/cockpit.cxx
@@ -161,11 +161,17 @@ float get_rudderval( void )
 float get_speed( void )
 {
     // Make an explicit function call.
-    float speed = current_aircraft.fdm_state->get_V_equiv_kts()
+    float speed = current_aircraft.fdm_state->get_V_calibrated_kts()
 	* current_options.get_speed_up();
     return( speed );
 }
 
+float get_mach(void)
+{
+	float mach=current_aircraft.fdm_state->get_Mach_number();
+	return mach;
+}	
+
 float get_aoa( void )
 {
     float aoa = current_aircraft.fdm_state->get_Alpha() * RAD_TO_DEG;
diff --git a/src/Cockpit/hud.cxx b/src/Cockpit/hud.cxx
index 4d3ec281f..a85624fc2 100644
--- a/src/Cockpit/hud.cxx
+++ b/src/Cockpit/hud.cxx
@@ -333,6 +333,26 @@ int fgHUDInit( fgAIRCRAFT * /* current_aircraft */ )
                                        50.0,
                                        true);
 
+  
+ 
+  HUD_deque.insert( HUD_deque.begin(), HIptr);
+    
+
+//      case 10:    // Digital Mach number
+        HIptr = (instr_item *) new instr_label ( min_x , //same as speed tape
+                                                 cen_y-(compass_w/2) -10, //below speed tape
+                                                  40,
+                                                  30,
+                                                 get_mach,
+                                                 "%4.2f",
+                                                 "",
+                                                 NULL,
+                                                 1.0,
+                                                 HUDS_TOP,
+                                                 RIGHT_JUST,
+                                                 font_size,
+                                                 0,
+                                                 TRUE );
   HUD_deque.insert( HUD_deque.begin(), HIptr);
 
 //      case 9:
diff --git a/src/Cockpit/hud.hxx b/src/Cockpit/hud.hxx
index efffde8b3..c64a83f14 100644
--- a/src/Cockpit/hud.hxx
+++ b/src/Cockpit/hud.hxx
@@ -180,6 +180,7 @@ extern float get_vfc_ratio   ( void );
 extern float get_vfc_tris_drawn   ( void );
 extern float get_vfc_tris_culled   ( void );
 extern float get_climb_rate  ( void );
+extern float get_mach( void );
 extern char *coord_format_lat(float);
 extern char *coord_format_lon(float);
 //extern char *coord_format_latlon(float latitude, float longitude);  // cockpit.cxx