X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FMain%2Fmain.cxx;h=6f3c3bb39c1327a867e7726b6a4d0b87a3530a03;hb=76a94d8f0278eeddf692850918526df84a73429c;hp=b363ed314169b3603ef846352c42a4923ecc03db;hpb=182fd42b4017fa54d680508c092ea1b216398a00;p=flightgear.git

diff --git a/src/Main/main.cxx b/src/Main/main.cxx
index b363ed314..6f3c3bb39 100644
--- a/src/Main/main.cxx
+++ b/src/Main/main.cxx
@@ -25,6 +25,8 @@
 #  include <config.h>
 #endif
 
+#include <simgear/compiler.h>
+
 #ifdef SG_MATH_EXCEPTION_CLASH
 #  include <math.h>
 #endif
@@ -35,7 +37,7 @@
 #endif
 
 #include <GL/glut.h>
-#include <simgear/xgl/xgl.h>
+#include <GL/gl.h>
 
 #include <stdio.h>
 #include <string.h>
@@ -53,6 +55,10 @@
 #  include <unistd.h>		// for stat()
 #endif
 
+// #ifdef HAVE_LIBX11
+// #  include <GL/glext.h>
+// #endif
+
 #include <plib/pu.h>
 #include <plib/ssg.h>
 
@@ -60,7 +66,7 @@
 #include <simgear/debug/logstream.hxx>
 #include <simgear/math/polar3d.hxx>
 #include <simgear/math/sg_random.h>
-#include <simgear/misc/fgpath.hxx>
+#include <simgear/misc/sg_path.hxx>
 #include <simgear/sky/sky.hxx>
 #include <simgear/timing/sg_time.hxx>
 #include <simgear/timing/lowleveltime.h>
@@ -77,10 +83,11 @@
 #include <FDM/UIUCModel/uiuc_aircraftdir.h>
 #include <GUI/gui.h>
 #include <GUI/sgVec3Slider.hxx>
-#include <Joystick/joystick.hxx>
+// #include <Joystick/joystick.hxx>
 #ifdef FG_NETWORK_OLK
 #include <NetworkOLK/network.h>
 #endif
+#include <Objects/matlib.hxx>
 #include <Scenery/scenery.hxx>
 #include <Scenery/tilemgr.hxx>
 #ifdef ENABLE_AUDIO_SUPPORT
@@ -93,9 +100,11 @@
 #include <Time/sunpos.hxx>
 #include <Time/tmp.hxx>
 
+#include <Input/input.hxx>
+
 // begin - added Venky
 //    $$$ begin - added VS Renganathan
-#include <simgear/misc/fgstream.hxx>
+#include <simgear/misc/sgstream.hxx>
 #include <FDM/flight.hxx>
 #include <FDM/ADA.hxx>
 void fgLoadDCS (void);
@@ -116,11 +125,10 @@ int objc=0;
 
 #include "version.h"
 
-#include "bfi.hxx"
 #include "fg_init.hxx"
 #include "fg_io.hxx"
+#include "fg_props.hxx"
 #include "globals.hxx"
-#include "keyboard.hxx"
 #include "splash.hxx"
 
 #ifdef macintosh
@@ -305,10 +313,83 @@ void fgInitVisuals( void ) {
 }
 
 
+// For HiRes screen Dumps using Brian Pauls TR Library
+void trRenderFrame( void ) {
+
+    if ( fgPanelVisible() ) {
+        GLfloat height = fgGetInt("/sim/startup/ysize");
+        GLfloat view_h =
+            (current_panel->getViewHeight() - current_panel->getYOffset())
+            * (height / 768.0) + 1;
+        glTranslatef( 0.0, view_h, 0.0 );
+    }
+
+    static double m_log01      = -log( 0.01 );
+    static double sqrt_m_log01 = sqrt( m_log01 );
+
+    static GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
+    static GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
+
+    fgLIGHT *l = &cur_light_params;
+
+    glClearColor(l->adj_fog_color[0], l->adj_fog_color[1], 
+                 l->adj_fog_color[2], l->adj_fog_color[3]);
+
+    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+    // set the opengl state to known default values
+    default_state->force();
+
+    // update fog params
+    double actual_visibility       = thesky->get_visibility();
+    // GLfloat fog_exp_density        = m_log01 / actual_visibility;
+    GLfloat fog_exp2_density       = sqrt_m_log01 / actual_visibility;
+    GLfloat fog_exp2_punch_through = sqrt_m_log01 / ( actual_visibility * 1.5 );
+
+    glEnable( GL_FOG );
+    glFogf  ( GL_FOG_DENSITY, fog_exp2_density);
+    glFogi  ( GL_FOG_MODE,    GL_EXP2 );
+    glFogfv ( GL_FOG_COLOR,   l->adj_fog_color );
+
+    // GL_LIGHT_MODEL_AMBIENT has a default non-zero value so if
+    // we only update GL_AMBIENT for our lights we will never get
+    // a completely dark scene.  So, we set GL_LIGHT_MODEL_AMBIENT
+    // explicitely to black.
+    glLightModelfv( GL_LIGHT_MODEL_AMBIENT, black );
+
+    ssgGetLight( 0 ) -> setColour( GL_AMBIENT, l->scene_ambient );
+
+    // texture parameters
+    glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
+    glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
+
+    // we need a white diffuse light for the phase of the moon
+    ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, white );
+    thesky->preDraw();
+
+    // draw the ssg scene
+    // return to the desired diffuse color
+    ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
+    glEnable( GL_DEPTH_TEST );
+    ssgCullAndDraw( scene );
+
+    // draw the lights
+    glFogf (GL_FOG_DENSITY, fog_exp2_punch_through);
+    ssgCullAndDraw( lighting );
+
+    thesky->postDraw( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER );
+
+    // need to do this here as hud_and_panel state is static to
+    // main.cxx  and HUD and Panel routines have to be called with
+    // knowledge of the the TR struct < see gui.cxx::HighResDump()
+    hud_and_panel->apply();
+}
+
+
 // Update all Visuals (redraws anything graphics related)
 void fgRenderFrame( void ) {
-    // Update the BFI.
-    FGBFI::update();
+    // Update the default (kludged) properties.
+    fgUpdateProps();
 
     fgLIGHT *l = &cur_light_params;
     static double last_visibility = -9999;
@@ -365,7 +446,7 @@ void fgRenderFrame( void ) {
 
 	sgVec3 po;		// chase view pilot_offset
 	sgVec3 wup;		// chase view world up
-	sgSetVec3( po, 0.0, 0.0, 50.0 );
+	sgSetVec3( po, 0.0, 0.0, 100.0 );
 	sgCopyVec3( wup, pilot_view->get_world_up() );
 	sgMat4 CXFM;		// chase view + pilot offset xform
 	sgMakeRotMat4( CXFM,
@@ -490,7 +571,7 @@ void fgRenderFrame( void ) {
 	    // cout << "----> updating fog params" << endl;
 		
 	    // for GL_FOG_EXP
-	    fog_exp_density = -log(0.01 / actual_visibility);
+	    fog_exp_density = -log(0.01) / actual_visibility;
     
 	    // for GL_FOG_EXP2
 	    fog_exp2_density = sqrt( -log(0.01) ) / actual_visibility;
@@ -555,32 +636,31 @@ void fgRenderFrame( void ) {
 	}
 
 	glEnable( GL_DEPTH_TEST );
-	if ( fgGetString("/sim/rendering/fog") != "disabled" ) {
+	if ( fgGetString("/sim/rendering/fog") != (string)"disabled" ) {
 	    glEnable( GL_FOG );
 	    glFogi( GL_FOG_MODE, GL_EXP2 );
 	    glFogfv( GL_FOG_COLOR, l->adj_fog_color );
 	}
 
-	// set lighting parameters
+	// set sun/lighting parameters
+	ssgGetLight( 0 ) -> setPosition( l->sun_vec );
+
+        // GL_LIGHT_MODEL_AMBIENT has a default non-zero value so if
+        // we only update GL_AMBIENT for our lights we will never get
+        // a completely dark scene.  So, we set GL_LIGHT_MODEL_AMBIENT
+        // explicitely to black.
 	GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
-	glLightModelfv( GL_LIGHT_MODEL_AMBIENT, l->scene_ambient );
-	glLightfv( GL_LIGHT0, GL_AMBIENT, black );
-	glLightfv( GL_LIGHT0, GL_DIFFUSE, l->scene_diffuse );
-	// glLightfv(GL_LIGHT0, GL_SPECULAR, white );
+	GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
+	glLightModelfv( GL_LIGHT_MODEL_AMBIENT, black );
+
+	ssgGetLight( 0 ) -> setColour( GL_AMBIENT, l->scene_ambient );
+	ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
+	// ssgGetLight( 0 ) -> setColour( GL_SPECULAR, l->scene_white );
 
 	// texture parameters
 	// glEnable( GL_TEXTURE_2D );
 	glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
 	glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
-	// set base color (I don't think this is doing anything here)
-	// glMaterialfv (GL_FRONT, GL_AMBIENT, white);
-	//  (GL_FRONT, GL_DIFFUSE, white);
-	// glMaterialfv (GL_FRONT, GL_SPECULAR, white);
-	// glMaterialfv (GL_FRONT, GL_SHININESS, mat_shininess);
-
-	sgVec3 sunpos;
-	sgSetVec3( sunpos, l->sun_vec[0], l->sun_vec[1], l->sun_vec[2] );
-	ssgGetLight( 0 ) -> setPosition( sunpos );
 
 	// glMatrixMode( GL_PROJECTION );
 	// glLoadIdentity();
@@ -640,9 +720,10 @@ void fgRenderFrame( void ) {
 
 	    if (prop_selector != NULL) {
 	      int propsel_mask = 0;
+	      double rpm = fgGetDouble("/engines/engine[0]/rpm");
 	      for (int i = 0; i < acmodel_npropsettings; i++) {
-		if (FGBFI::getRPM() >= acmodel_proprpms[i][0] &&
-		    FGBFI::getRPM() <= acmodel_proprpms[i][1]) {
+		if (rpm >= acmodel_proprpms[i][0] &&
+		    rpm <= acmodel_proprpms[i][1]) {
 		  propsel_mask |= 1 << i;
 		}
 	      }
@@ -680,7 +761,14 @@ void fgRenderFrame( void ) {
 
 	if ( fgGetBool("/sim/rendering/skyblend") ) {
 	    // draw the sky backdrop
+
+            // we need a white diffuse light for the phase of the moon
+            ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, white );
+
 	    thesky->preDraw();
+
+            // return to the desired diffuse color
+            ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
 	}
 
 	// draw the ssg scene
@@ -706,6 +794,9 @@ void fgRenderFrame( void ) {
 	// glDisable( GL_CULL_FACE );
 	// glDisable( GL_TEXTURE_2D );
 
+	// update the input subsystem
+	current_input.update();
+
 	// update the controls subsystem
 	controls.update();
 
@@ -756,7 +847,7 @@ void fgUpdateTimeDepCalcs() {
 	multi_loop = (long)(((double)elapsed * 0.000001) /
 			       cur_fdm_state->get_delta_t() );
 	cur_fdm_state->set_multi_loop( multi_loop );
-	long remainder = elapsed - ( (multi_loop*1000000) *
+	long remainder = elapsed - (long)( (multi_loop*1000000) *
 				     cur_fdm_state->get_delta_t() );
 	cur_fdm_state->set_remainder( remainder );
 	// cout << "remainder = " << remainder << endl;
@@ -781,9 +872,9 @@ void fgUpdateTimeDepCalcs() {
 	cur_fdm_state->update( 0 );
 	FGSteam::update( 0 );
 
-	if ( global_tile_mgr.queue_size() == 0 ) {
+	//if ( global_tile_mgr.queue_size() == 0 ) {
 	    initial_freeze = false;
-	}
+	    //}
     }
 
     if ( fgGetString("/sim/view-mode") == "pilot" ) {
@@ -890,10 +981,10 @@ static void fgMainLoop( void ) {
 
 #if defined( ENABLE_PLIB_JOYSTICK )
     // Read joystick and update control settings
-    if ( fgGetString("/sim/control-mode") == "joystick" )
-    {
-	fgJoystickRead();
-    }
+    // if ( fgGetString("/sim/control-mode") == "joystick" )
+    // {
+    //    fgJoystickRead();
+    // }
 #elif defined( ENABLE_GLUT_JOYSTICK )
     // Glut joystick support works by feeding a joystick handler
     // function to glut.  This is taken care of once in the joystick
@@ -935,6 +1026,8 @@ static void fgMainLoop( void ) {
 	   cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
 	   cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */
 
+    // cout << "Warp = " << globals->get_warp() << endl;
+
     // update "time"
     if ( globals->get_warp_delta() != 0 ) {
 	globals->inc_warp( globals->get_warp_delta() );
@@ -1024,8 +1117,13 @@ static void fgMainLoop( void ) {
 #endif
 
     // see if we need to load any new scenery tiles
-    global_tile_mgr.update( cur_fdm_state->get_Longitude() * SGD_RADIANS_TO_DEGREES,
-			    cur_fdm_state->get_Latitude() * SGD_RADIANS_TO_DEGREES );
+    global_tile_mgr.update( cur_fdm_state->get_Longitude()
+                            * SGD_RADIANS_TO_DEGREES,
+			    cur_fdm_state->get_Latitude()
+                            * SGD_RADIANS_TO_DEGREES );
+
+    // see if we need to load any deferred-load textures
+    material_lib.load_next_deferred();
 
     // Process/manage pending events
     global_events.Process();
@@ -1111,20 +1209,42 @@ static void fgIdleFunction ( void ) {
 	
 	idle_state++;
     } else if ( idle_state == 1 ) {
+	// Initialize audio support
+#ifdef ENABLE_AUDIO_SUPPORT
+
 	// Start the intro music
 #if !defined(WIN32)
 	if ( fgGetBool("/sim/startup/intro-music") ) {
-	    string lockfile = "/tmp/mpg123.running";
-	    FGPath mp3file( globals->get_fg_root() );
+	    SGPath mp3file( globals->get_fg_root() );
 	    mp3file.append( "Sounds/intro.mp3" );
 
-	    string command = "(touch " + lockfile + "; mpg123 "
-		+ mp3file.str() + "> /dev/null 2>&1; /bin/rm "
-		+ lockfile + ") &";
 	    SG_LOG( SG_GENERAL, SG_INFO, 
 		    "Starting intro music: " << mp3file.str() );
+
+	    string command = "mpg123 " + mp3file.str() + "> /dev/null 2>&1";
 	    system ( command.c_str() );
 	}
+#endif // !WIN32
+
+	FGSoundMgr *soundmgr = new FGSoundMgr;
+	globals->set_soundmgr( soundmgr );
+
+	if ( fgGetBool("/sim/sound") ) {
+	    globals->get_soundmgr()->init();
+
+	    s1 = new FGSimpleSound( fgGetString("/sim/sounds/engine",
+						"Sounds/wasp.wav") );
+	    globals->get_soundmgr()->add( s1, "engine loop" );
+	    globals->get_soundmgr()->play_looped( "engine loop" );
+	    SG_LOG( SG_GENERAL, SG_INFO,
+		    "Rate = " << s1->get_sample()->getRate()
+		    << "  Bps = " << s1->get_sample()->getBps()
+		    << "  Stereo = " << s1->get_sample()->getStereo() );
+
+	    // s2 = new FGSimpleSound( "Sounds/corflaps.wav" );
+	    // s2->set_volume( 0.3 );
+	    // globals->get_soundmgr()->add( s2, "flaps" );
+	}
 #endif
 
 	idle_state++;
@@ -1160,47 +1280,6 @@ static void fgIdleFunction ( void ) {
 
 	idle_state++;
     } else if ( idle_state == 6 ) {
-	// Initialize audio support
-#ifdef ENABLE_AUDIO_SUPPORT
-
-#if !defined(WIN32)
-	if ( fgGetBool("/sim/startup/intro-music") ) {
-	    // Let's wait for mpg123 to finish
-	    string lockfile = "/tmp/mpg123.running";
-	    struct stat stat_buf;
-
-	    SG_LOG( SG_GENERAL, SG_INFO, 
-		    "Waiting for mpg123 player to finish ..." );
-	    while ( stat(lockfile.c_str(), &stat_buf) == 0 ) {
-		// file exist, wait ...
-		sleep(1);
-		SG_LOG( SG_GENERAL, SG_INFO, ".");
-	    }
-	    SG_LOG( SG_GENERAL, SG_INFO, "");
-	}
-#endif // WIN32
-
-	if ( fgGetBool("/sim/sound") ) {
-	    globals->get_soundmgr()->init();
-
-	    s1 = new FGSimpleSound( fgGetString("/sim/sounds/engine",
-						"Sounds/wasp.wav") );
-	    globals->get_soundmgr()->add( s1, "engine loop" );
-	    globals->get_soundmgr()->play_looped( "engine loop" );
-	    SG_LOG( SG_GENERAL, SG_INFO,
-		    "Rate = " << s1->get_sample()->getRate()
-		    << "  Bps = " << s1->get_sample()->getBps()
-		    << "  Stereo = " << s1->get_sample()->getStereo() );
-
-	    s2 = new FGSimpleSound( "Sounds/corflaps.wav" );
-	    // FGMorse mmm;
-	    // mmm.init();
-	    // s2 = mmm.make_ident( "JLI" );
-	    s2->set_volume( 0.3 );
-	    globals->get_soundmgr()->add( s2, "flaps" );
-	}
-#endif
-
 	// sleep(1);
 	idle_state = 1000;
 
@@ -1326,8 +1405,10 @@ int fgGlutInitEvents( void ) {
     glutReshapeFunc( fgReshape );
 
     // call GLUTkey() on keyboard event
-    glutKeyboardFunc( GLUTkey );
-    glutSpecialFunc( GLUTspecialkey );
+    glutKeyboardFunc(GLUTkey);
+    glutKeyboardUpFunc(GLUTkeyup);
+    glutSpecialFunc(GLUTspecialkey);
+    glutSpecialUpFunc(GLUTspecialkeyup);
 
     // call guiMouseFunc() whenever our little rodent is used
     glutMouseFunc ( guiMouseFunc );
@@ -1373,9 +1454,7 @@ int main( int argc, char **argv ) {
     // Allocate global data structures.  This needs to happen before
     // we parse command line options
 
-    SGPropertyNode *props = new SGPropertyNode;
     globals = new FGGlobals;
-    globals->set_props( props );
 
     // seed the random number generater
     sg_srandom_time();
@@ -1383,11 +1462,6 @@ int main( int argc, char **argv ) {
     SGRoute *route = new SGRoute;
     globals->set_route( route );
 
-#ifdef ENABLE_AUDIO_SUPPORT
-    FGSoundMgr *soundmgr = new FGSoundMgr;
-    globals->set_soundmgr( soundmgr );
-#endif
-
     FGViewMgr *viewmgr = new FGViewMgr;
     globals->set_viewmgr( viewmgr );
 
@@ -1407,6 +1481,15 @@ int main( int argc, char **argv ) {
     // fg_root was specified (ignore all other options for now)
     fgInitFGRoot(argc, argv);
 
+    // Check for the correct base package version
+    string base_version = fgBasePackageVersion();
+    if ( !(base_version == "0.7.9") ) {
+	SG_LOG( SG_GENERAL, SG_ALERT, "Base package check failed ... "
+		<< "Found version " << base_version );
+        SG_LOG( SG_GENERAL, SG_ALERT, "Please upgrade to version 0.7.9" );
+	exit(-1);
+    }
+
     // Initialize the Aircraft directory to "" (UIUC)
     aircraft_dir = "";
 
@@ -1438,19 +1521,33 @@ int main( int argc, char **argv ) {
     // fonts !!!
     guiInit();
 
+#ifdef GL_EXT_texture_lod_bias
+    glTexEnvf( GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, -0.5 ) ;
+#endif
+
+#if 0
+#ifdef GL_EXT_texture_filter_anisotropic
+    float max_anisotropy;
+    glGetFloatv( GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &max_anisotropy );
+    glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT,
+                     max_anisotropy );
+    cout << "Max anisotropy = " << max_anisotropy << endl;
+#endif
+#endif
+
     // set current_options lon/lat if an airport id is specified
     // cout << "3. airport_id = " << fgGetString("/sim/startup/airport-id") << endl;
     if ( fgGetString("/sim/startup/airport-id").length() ) {
 	// fgSetPosFromAirportID( fgGetString("/sim/startup/airport-id") );
 	fgSetPosFromAirportIDandHdg( fgGetString("/sim/startup/airport-id"),
-				     fgGetDouble("/orientation/heading") );
+				     fgGetDouble("/orientation/heading-deg") );
     }
 
     // Initialize time
-    FGPath zone( globals->get_fg_root() );
+    SGPath zone( globals->get_fg_root() );
     zone.append( "Timezone" );
-    SGTime *t = new SGTime( fgGetDouble("/position/longitude") * SGD_DEGREES_TO_RADIANS,
-			    fgGetDouble("/position/latitude") * SGD_DEGREES_TO_RADIANS,
+    SGTime *t = new SGTime( fgGetDouble("/position/longitude-deg") * SGD_DEGREES_TO_RADIANS,
+			    fgGetDouble("/position/latitude-deg") * SGD_DEGREES_TO_RADIANS,
 			    zone.str() );
 
     // Handle potential user specified time offsets
@@ -1498,7 +1595,7 @@ int main( int argc, char **argv ) {
 	exit(-1);
     }
 
-    FGPath modelpath( globals->get_fg_root() );
+    SGPath modelpath( globals->get_fg_root() );
     ssgModelPath( (char *)modelpath.c_str() );
   
     // Scene graph root
@@ -1509,7 +1606,7 @@ int main( int argc, char **argv ) {
     lighting->setName( "Lighting" );
 
     // Initialize the sky
-    FGPath ephem_data_path( globals->get_fg_root() );
+    SGPath ephem_data_path( globals->get_fg_root() );
     ephem_data_path.append( "Astro" );
     SGEphemeris *ephem = new SGEphemeris( ephem_data_path.c_str() );
     ephem->update( globals->get_time_params()->getMjd(),
@@ -1517,10 +1614,11 @@ int main( int argc, char **argv ) {
 		   0.0 );
     globals->set_ephem( ephem );
 
-    FGPath sky_tex_path( globals->get_fg_root() );
+    thesky = new SGSky;
+
+    SGPath sky_tex_path( globals->get_fg_root() );
     sky_tex_path.append( "Textures" );
     sky_tex_path.append( "Sky" );
-    thesky = new SGSky;
     thesky->texture_path( sky_tex_path.str() );
 
     thesky->build( 550.0, 550.0,
@@ -1530,14 +1628,14 @@ int main( int argc, char **argv ) {
 		   globals->get_ephem()->getStars(), 60000.0 );
 
     if ( fgGetBool("/environment/clouds/status") ) {
+	// thesky->add_cloud_layer( 2000.0, 200.0, 50.0, 40000.0,
+        //                          SG_CLOUD_OVERCAST );
 	thesky->add_cloud_layer( 2600.0, 200.0, 50.0, 40000.0,
-				 SG_CLOUD_MOSTLY_SUNNY );
+				 SG_CLOUD_MOSTLY_CLOUDY );
+	// thesky->add_cloud_layer( 3000.0, 200.0, 50.0, 40000.0,
+	//                          SG_CLOUD_MOSTLY_SUNNY );
 	thesky->add_cloud_layer( 6000.0, 20.0, 10.0, 40000.0,
 				 SG_CLOUD_CIRRUS );
-	// thesky->add_cloud_layer( 1000.0, 200.0, 50.0,
-	//                          SG_CLOUD_MOSTLY_SUNNY );
-	// thesky->add_cloud_layer( 1800.0, 400.0, 100.0, SG_CLOUD_OVERCAST );
-	// thesky->add_cloud_layer( 5000.0, 20.0, 10.0, SG_CLOUD_CIRRUS );
     }
 
     // Initialize MagVar model
@@ -1562,18 +1660,29 @@ int main( int argc, char **argv ) {
     acmodel_selector = new ssgSelector;
     acmodel_pos = new ssgTransform;
 
+    // Get the model location, and load textures from the same
+    // directory.  Use an absolute path for the model to avoid
+    // incompatibilities in different versions of PLIB.
     string acmodel_path =
 	fgGetString("/sim/model/path", "Models/Geometry/glider.ac");
+    SGPath full_model = globals->get_fg_root();
+    full_model.append(acmodel_path);
 
-    string full_model = globals->get_fg_root() + "/"
-	+ acmodel_path;
-    int pos = full_model.rfind("/");
-    
-    FGPath texturepath( full_model.substr(0, pos) );
-    cout << "Texture path = " << texturepath.str() << endl;
-    ssgTexturePath( (char *)texturepath.c_str() );
+#if !defined( PLIB_1_2_X )
+    // this should be redundant ... but it breaks for relative paths
+    // ssgModelPath( (char *)full_model.dir().c_str() );
+#endif
 
-    ssgEntity *acmodel_obj = ssgLoad((char *)(acmodel_path.c_str()));
+    ssgTexturePath( (char *)full_model.dir().c_str() );
+    ssgEntity *acmodel_obj = ssgLoad( (char *)full_model.c_str() );
+    if( !acmodel_obj ) {
+        // fall back to default
+        acmodel_obj = ssgLoad( (char *)"Models/Geometry/glider.ac" );
+        if( !acmodel_obj ) {
+            SG_LOG( SG_GENERAL, SG_ALERT, "FAILED to LOAD an AC model! ..." );
+            exit(-1);
+        }
+    }
 
     // find moving parts (if this is an MDL model)
     flaps_selector = (ssgSelector*)fgFindNode( acmodel_obj, "FLAPS" );
@@ -1604,12 +1713,12 @@ int main( int argc, char **argv ) {
     sgMat4 rot_matrix;
     sgMat4 off_matrix;
     sgMat4 res_matrix;
-    float h_rot = fgGetFloat("/sim/model/h-rotation", 0.0);
-    float p_rot = fgGetFloat("/sim/model/p-rotation", 0.0);
-    float r_rot = fgGetFloat("/sim/model/r-rotation", 0.0);
-    float x_off = fgGetFloat("/sim/model/x-offset", 0.0);
-    float y_off = fgGetFloat("/sim/model/y-offset", 0.0);
-    float z_off = fgGetFloat("/sim/model/z-offset", 0.0);
+    float h_rot = fgGetFloat("/sim/model/heading-offset-deg", 0.0);
+    float p_rot = fgGetFloat("/sim/model/roll-offset-deg", 0.0);
+    float r_rot = fgGetFloat("/sim/model/pitch-offset-deg", 0.0);
+    float x_off = fgGetFloat("/sim/model/x-offset-m", 0.0);
+    float y_off = fgGetFloat("/sim/model/y-offset-m", 0.0);
+    float z_off = fgGetFloat("/sim/model/z-offset-m", 0.0);
     sgMakeRotMat4(rot_matrix, h_rot, p_rot, r_rot);
     sgMakeTransMat4(off_matrix, x_off, y_off, z_off);
     sgMultMat4(res_matrix, off_matrix, rot_matrix);
@@ -1655,73 +1764,74 @@ void fgLoadDCS(void) {
     // int j=0;
     char obj_filename[25];
 
-    for (int k=0;k<32;k++)
-    {
+    for ( int k = 0; k < 32; k++ ) {
         ship_pos[k]=NULL;
     }
 
-    FGPath tile_path( globals->get_fg_root());
+    SGPath tile_path( globals->get_fg_root());
     tile_path.append( "Scenery" );
     tile_path.append( "Objects.txt" );
-    fg_gzifstream in( tile_path.str() );
+    sg_gzifstream in( tile_path.str() );
     if ( ! in.is_open() ) {
 	SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: " << tile_path.str() );
-    }
+    } else {
 
-    FGPath modelpath( globals->get_fg_root() );
-    modelpath.append( "Models" );
-    modelpath.append( "Geometry" );
+        SGPath modelpath( globals->get_fg_root() );
+        modelpath.append( "Models" );
+        modelpath.append( "Geometry" );
   
-    FGPath texturepath( globals->get_fg_root() );
-    texturepath.append( "Models" );
-    texturepath.append( "Textures" );
+        SGPath texturepath( globals->get_fg_root() );
+        texturepath.append( "Models" );
+        texturepath.append( "Textures" );
  
-    ssgModelPath( (char *)modelpath.c_str() );
-    ssgTexturePath( (char *)texturepath.c_str() );
-
-    ship_sel = new ssgSelector;
-
-    char c;
-    while ( ! in.eof() ) 
-    {
-       in >> ::skipws;
-       if ( in.get( c ) && c == '#' )
-       { 
-            in >> skipeol;
-       }
-       else 
-       { 
-       	in.putback(c);
-           	in >> obj_filename >> obj_lat[objc] >> obj_lon[objc] >> obj_alt[objc];
-/*       	cout << endl << obj_filename << " " << obj_lat[objc] << " " << obj_lon[objc] <<  " " << obj_alt[objc] << endl;
-       	int chj=getchar();*/
+        ssgModelPath( (char *)modelpath.c_str() );
+        ssgTexturePath( (char *)texturepath.c_str() );
+
+        ship_sel = new ssgSelector;
+
+        char c;
+        while ( ! in.eof() ) {
+            in >> ::skipws;
+            if ( in.get( c ) && c == '#' ) { 
+                in >> skipeol;
+            } else { 
+                in.putback(c);
+                in >> obj_filename >> obj_lat[objc] >> obj_lon[objc] >> obj_alt[objc];
+                /* cout << endl << obj_filename << " " << obj_lat[objc] << " " << obj_lon[objc] <<  " " << obj_alt[objc] << endl;
+                   int chj=getchar();*/
                 
-	      obj_lon[objc] *=SGD_DEGREES_TO_RADIANS;
-      	obj_lat[objc] *=SGD_DEGREES_TO_RADIANS;
-    
-            ship_pos[objc] = new ssgTransform;
-       
+                obj_lon[objc] *=SGD_DEGREES_TO_RADIANS;
+                obj_lat[objc] *=SGD_DEGREES_TO_RADIANS;
+                
+                ship_pos[objc] = new ssgTransform;
        
-       	// type "repeat" in objects.txt to load one more instance of the last object.
+                // type "repeat" in objects.txt to load one more
+                // instance of the last object.
 
-       	if ( strcmp(obj_filename,"repeat") != 0)
-                  ship_obj = ssgLoadOBJ( obj_filename );
+                if ( strcmp(obj_filename,"repeat") != 0) {
+                    ship_obj = ssgLoadOBJ( obj_filename );
+                }
       
-	      if ( ship_obj != NULL ) 
-            {
-	 		ship_pos[objc]->addKid( ship_obj ); // add object to transform node
-		 	ship_sel->addKid( ship_pos[objc] ); // add transform node to selector
-			}
-       	else
-       		SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: " << obj_filename );
+                if ( ship_obj != NULL ) {
+                    ship_pos[objc]->addKid( ship_obj ); // add object to transform node
+                    ship_sel->addKid( ship_pos[objc] ); // add transform node to selector
+                } else {
+                    SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: "
+                            << obj_filename );
+                }
             
-      	if (in.eof()) break;
-            objc++;
-         }
-     } // while
+                objc++;
+
+                if (in.eof()) break;
+            }
+        } // while
+
+        SG_LOG ( SG_TERRAIN, SG_ALERT, "Finished object processing." );
+
+        ship_sel->clrTraversalMaskBits( SSGTRAV_HOT );
+        scene->addKid( ship_sel ); //add selector node to root node 
+    }
 
-    ship_sel->clrTraversalMaskBits( SSGTRAV_HOT );
-    scene->addKid( ship_sel ); //add selector node to root node
     return;
  }
 
@@ -1740,15 +1850,13 @@ void fgUpdateDCS (void) {
     
     // Deck should be the first object in objects.txt in case of fdm=ada
 
-    if (fgGetString("/sim/flight-model") == "ada")
-    {
-      obj_lon[0] = fdm->get_aux5()*SGD_DEGREES_TO_RADIANS;
-      obj_lat[0] = fdm->get_aux6()*SGD_DEGREES_TO_RADIANS;
-      obj_alt[0] = fdm->get_aux7();
+    if (fgGetString("/sim/flight-model") == "ada") {
+        obj_lon[0] = fdm->get_aux5()*SGD_DEGREES_TO_RADIANS;
+        obj_lat[0] = fdm->get_aux6()*SGD_DEGREES_TO_RADIANS;
+        obj_alt[0] = fdm->get_aux7();
     }
     
-    for (int m=0; m<=objc; m++)
-    {
+    for ( int m = 0; m < objc; m++ ) {
     	//cout << endl <<  obj_lat[m]*SGD_RADIANS_TO_DEGREES << " " << obj_lon[m]*SGD_RADIANS_TO_DEGREES << " " << obj_alt[m] << " " << objc << endl;
 	//int v=getchar();
 
@@ -1790,9 +1898,10 @@ void fgUpdateDCS (void) {
 	sgSetCoord(&shippos, sgTUX );
 	ship_pos[m]->setTransform( &shippos );
     }
-   if ( ship_sel != NULL ) 
+    if ( ship_sel != NULL ) {
 	ship_sel->select(0xFFFFFFFF);
-  }
+    }
+}
 
 // $$$ end - added VS Renganathan, 15 Oct 2K
 //           added Venky         , 12 Nov 2K