Added a RotateAcceleration field to the config file to control the sensitivity of keyboard and joystick navigation controls.

src/celestia/celestiacore.cpp

@@ -50,11 +50,11 @@ static const float fIncrementFactor = 10.0f;
 static const double fMinSlewRate = 3.0;
 static const double fMaxKeyAccel = 20.0;
 static const float fAltitudeThreshold = 4.0f;
-static const float KeyRotationAccel = degToRad(120.0f);
 static const float RotationBraking = 10.0f;
 static const float RotationDecay = 2.0f;
 static const double MaximumTimeRate = 1.0e15;
 static const float stdFOV = 45.0f;
+static float KeyRotationAccel = degToRad(120.0f);
 
 
 static void warning(string s)
@@ -1028,13 +1028,13 @@ void CelestiaCore::tick()
     float fov = renderer->getFieldOfView()/stdFOV;
 
     if (keysPressed[Key_Left])
-        av += Vec3f(0, 0, dt);
+        av += Vec3f(0, 0, dt * -KeyRotationAccel);
     if (keysPressed[Key_Right])
-        av += Vec3f(0, 0, -dt);
+        av += Vec3f(0, 0, dt * KeyRotationAccel);
     if (keysPressed[Key_Down])
-        av += Vec3f(dt * fov, 0, 0);
+        av += Vec3f(dt * fov * -KeyRotationAccel, 0, 0);
     if (keysPressed[Key_Up])
-        av += Vec3f(-dt * fov, 0, 0);
+        av += Vec3f(dt * fov * KeyRotationAccel, 0, 0);
 
     if (keysPressed[Key_NumPad4])
         av += Vec3f(0, dt * fov * -KeyRotationAccel, 0);
@@ -1708,6 +1708,8 @@ bool CelestiaCore::initSimulation()
         return false;
     }
 
+    KeyRotationAccel = degToRad(config->rotateAcceleration);
+
     readFavoritesFile();
 
     // If we couldn't read the favorites list from a file, allocate

src/celestia/configfile.cpp

@@ -72,6 +72,9 @@ CelestiaConfig* ReadCelestiaConfig(string filename)
     // configParams->getNumber("LogoWidth", config->logoWidth);
     // configParams->getNumber("LogoHeight", config->logoHeight);
 
+    config->rotateAcceleration = 120.0f;
+    configParams->getNumber("RotateAcceleration", config->rotateAcceleration);
+
     Value* solarSystemsVal = configParams->getValue("SolarSystemCatalogs");
     if (solarSystemsVal != NULL)
     {

src/celestia/configfile.h

@@ -33,6 +33,7 @@ struct CelestiaConfig
     std::string labelFont;
     std::string titleFont;
     std::string logoTextureFile;
+    float rotateAcceleration;
 };