From 4b2dfde7bf8b7df4374104a04336f9e903da5141 Mon Sep 17 00:00:00 2001
From: curt <curt>
Date: Fri, 12 Feb 1999 23:22:35 +0000
Subject: [PATCH] Allow auto-throttle adjustment while active.

---
 Autopilot/autopilot.cxx | 42 +++++++++++++++++++++++++++++++----------
 Autopilot/autopilot.hxx |  5 +++++
 Main/GLUTkey.cxx        | 27 ++++++++++++++++++++++----
 3 files changed, 60 insertions(+), 14 deletions(-)

diff --git a/Autopilot/autopilot.cxx b/Autopilot/autopilot.cxx
index d556aa7cb..76c8d3737 100644
--- a/Autopilot/autopilot.cxx
+++ b/Autopilot/autopilot.cxx
@@ -116,21 +116,31 @@ bool fgAPHeadingEnabled( void )
     fgAPDataPtr APData;
 	
     APData = APDataGlobal;
-    // end section
 	        
     // heading hold enabled?
-    return( APData->heading_hold );
+    return APData->heading_hold;
 }
+
 bool fgAPAltitudeEnabled( void )
 {
     fgAPDataPtr APData;
 	
     APData = APDataGlobal;
-    // end section
 	        
     // altitude hold or terrain follow enabled?
-    return( APData->altitude_hold || APData->terrain_follow );
+    return APData->altitude_hold || APData->terrain_follow ;
+}
+
+bool fgAPAutoThrottleEnabled( void )
+{
+    fgAPDataPtr APData;
+	
+    APData = APDataGlobal;
+
+    // autothrottle enabled?
+    return APData->auto_throttle;
 }
+
 void fgAPAltitudeAdjust( double inc )
 {
     // Remove at a later date
@@ -156,19 +166,28 @@ void fgAPAltitudeAdjust( double inc )
 	target_agl *= FEET_TO_METER;
     }
 
-    // heading hold enabled?
     APData->TargetAltitude = target_alt;
     APData->TargetAGL = target_agl;
 }
+
 void fgAPHeadingAdjust( double inc )
 {
     fgAPDataPtr APData;
-	
     APData = APDataGlobal;
-    // end section
-	        
-    // heading hold enabled?
-    APData->TargetHeading = NormalizeDegrees(APData->TargetHeading + inc);
+
+    double target = (int)(APData->TargetHeading / inc) * inc + inc;
+
+    APData->TargetHeading = NormalizeDegrees(target);
+}
+
+void fgAPAutoThrottleAdjust( double inc )
+{
+    fgAPDataPtr APData;
+    APData = APDataGlobal;
+
+    double target = (int)(APData->TargetSpeed / inc) * inc + inc;
+
+    APData->TargetSpeed = target;
 }
 
 void fgAPInit( fgAIRCRAFT *current_aircraft )
@@ -562,6 +581,9 @@ double NormalizeDegrees(double Input)
 
 
 // $Log$
+// Revision 1.15  1999/02/12 23:22:35  curt
+// Allow auto-throttle adjustment while active.
+//
 // Revision 1.14  1999/02/12 22:17:14  curt
 // Changes contributed by Norman Vine to allow adjustment of the autopilot
 // while it is activated.
diff --git a/Autopilot/autopilot.hxx b/Autopilot/autopilot.hxx
index 45e11757c..18235c735 100644
--- a/Autopilot/autopilot.hxx
+++ b/Autopilot/autopilot.hxx
@@ -73,14 +73,19 @@ void fgAPToggleAutoThrottle( void );
 
 bool fgAPAltitudeEnabled( void );
 bool fgAPHeadingEnabled( void );
+bool fgAPAutoThrottleEnabled( void );
 void fgAPAltitudeAdjust( double inc );
 void fgAPHeadingAdjust( double inc );
+void fgAPAutoThrottleAdjust( double inc );
 
 
 #endif // _AUTOPILOT_HXX
 
 
 // $Log$
+// Revision 1.9  1999/02/12 23:22:36  curt
+// Allow auto-throttle adjustment while active.
+//
 // Revision 1.8  1999/02/12 22:17:15  curt
 // Changes contributed by Norman Vine to allow adjustment of the autopilot
 // while it is activated.
diff --git a/Main/GLUTkey.cxx b/Main/GLUTkey.cxx
index 3799d9e25..e04a1db54 100644
--- a/Main/GLUTkey.cxx
+++ b/Main/GLUTkey.cxx
@@ -221,10 +221,18 @@ void GLUTkey(unsigned char k, int x, int y) {
 	    controls.set_rudder(0.0);
 	    return;
 	case 57: // numeric keypad 9 (Pg Up)
-	    controls.move_throttle( FGControls::ALL_ENGINES, 0.01 );
+	    if( fgAPAutoThrottleEnabled() ) {
+		fgAPAutoThrottleAdjust( 5 );
+	    } else {
+		controls.move_throttle( FGControls::ALL_ENGINES, 0.01 );
+	    }
 	    return;
 	case 51: // numeric keypad 3 (Pg Dn)
-	    controls.move_throttle( FGControls::ALL_ENGINES, -0.01 );
+	    if( fgAPAutoThrottleEnabled() ) {
+		fgAPAutoThrottleAdjust( -5 );
+	    } else {
+		controls.move_throttle( FGControls::ALL_ENGINES, -0.01 );
+	    }
 	    return;
 	case 98: // b key
 	    int b_ret;
@@ -407,10 +415,18 @@ void GLUTspecialkey(int k, int x, int y) {
 	    controls.set_rudder(0.0);
 	    return;
 	case GLUT_KEY_PAGE_UP: // numeric keypad 9 (Pg Up)
-	    controls.move_throttle( FGControls::ALL_ENGINES, 0.01 );
+	    if( fgAPAutoThrottleEnabled() ) {
+		fgAPAutoThrottleAdjust( 5 );
+	    } else {
+		controls.move_throttle( FGControls::ALL_ENGINES, 0.01 );
+	    }
 	    return;
 	case GLUT_KEY_PAGE_DOWN: // numeric keypad 3 (Pg Dn)
-	    controls.move_throttle( FGControls::ALL_ENGINES, -0.01 );
+	    if( fgAPAutoThrottleEnabled() ) {
+		fgAPAutoThrottleAdjust( -5 );
+	    } else {
+		controls.move_throttle( FGControls::ALL_ENGINES, -0.01 );
+	    }
 	    return;
 	}
     }
@@ -418,6 +434,9 @@ void GLUTspecialkey(int k, int x, int y) {
 
 
 // $Log$
+// Revision 1.41  1999/02/12 23:22:43  curt
+// Allow auto-throttle adjustment while active.
+//
 // Revision 1.40  1999/02/12 22:17:59  curt
 // Changes to allow adjustment of the autopilot settings while it is activated.
 //
-- 
2.39.5