// main.cxx -- top level sim routines // // Written by Curtis Olson, started May 1997. // // Copyright (C) 1997 - 2002 Curtis L. Olson - curt@flightgear.org // // This program is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License as // published by the Free Software Foundation; either version 2 of the // License, or (at your option) any later version. // // This program is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. // // $Id$ #ifdef HAVE_CONFIG_H # include #endif #if defined(__linux__) && defined(__i386__) # include # include #endif #include #include STL_IOSTREAM SG_USING_STD(cerr); SG_USING_STD(endl); #include #include #include #ifdef SG_MATH_EXCEPTION_CLASH # include #endif #ifdef HAVE_WINDOWS_H # include # include #endif #include GLUT_H #include #include // for strcmp() #include #ifdef HAVE_STDLIB_H # include #endif #ifdef HAVE_SYS_STAT_H # include // for stat() #endif #ifdef HAVE_UNISTD_H # include // for stat() #endif #include #include #include #include #include // for VERSION #include #include #include #include #include #include #include #include #include #ifdef FG_USE_CLOUDS_3D # include # include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef FG_NETWORK_OLK #include #endif #ifdef FG_MPLAYER_AS #include #include #endif #include #include #ifdef ENABLE_AUDIO_SUPPORT # include # include #endif #include #include #include #include #include #include #include // ADA #include #include #include #include #include #include "fg_commands.hxx" #ifdef FG_EXPERIMENTAL_POINT_LIGHTING #ifdef WIN32 typedef void (APIENTRY * PFNGLPOINTPARAMETERFEXTPROC)(GLenum pname, GLfloat param); typedef void (APIENTRY * PFNGLPOINTPARAMETERFVEXTPROC)(GLenum pname, const GLfloat *params); PFNGLPOINTPARAMETERFEXTPROC glPointParameterfEXT = 0; PFNGLPOINTPARAMETERFVEXTPROC glPointParameterfvEXT = 0; #elif linux #include typedef void (* OpenGLFuncExt)(GLenum pname, GLfloat param); typedef void (* OpenGLFuncExtv)(GLenum pname, const GLfloat *params); OpenGLFuncExt glPointParameterfEXT = 0; OpenGLFuncExtv glPointParameterfvEXT = 0; #endif #endif float default_attenuation[3] = {1.0, 0.0, 0.0}; //Required for using GL_extensions void fgLoadDCS (void); void fgUpdateDCS (void); ssgSelector *ship_sel=NULL; // upto 32 instances of a same object can be loaded. ssgTransform *ship_pos[32]; double obj_lat[32],obj_lon[32],obj_alt[32],obj_pitch[32],obj_roll[32]; int objc=0; ssgSelector *lightpoints_brightness = new ssgSelector; ssgTransform *lightpoints_transform = new ssgTransform; FGTileEntry *dummy_tile; sgVec3 rway_ols; // ADA // Clip plane settings... float scene_nearplane = 0.5f; float scene_farplane = 120000.0f; static double delta_time_sec = 0; #ifdef FG_WEATHERCM # include #else # include #endif #include "version.h" #include "fg_init.hxx" #include "fg_io.hxx" #include "fg_props.hxx" #include "globals.hxx" #include "splash.hxx" #include "viewmgr.hxx" #include "options.hxx" #include "logger.hxx" #ifdef macintosh # include // -dw- for command line dialog #endif FGEventMgr global_events; // This is a record containing a bit of global housekeeping information FGGeneral general; // Specify our current idle function state. This is used to run all // our initializations out of the glutIdleLoop() so that we can get a // splash screen up and running right away. static int idle_state = 0; static long global_multi_loop; // fog constants. I'm a little nervous about putting actual code out // here but it seems to work (?) static const double m_log01 = -log( 0.01 ); static const double sqrt_m_log01 = sqrt( m_log01 ); static GLfloat fog_exp_density; static GLfloat fog_exp2_density; static GLfloat rwy_exp2_punch_through; static GLfloat taxi_exp2_punch_through; static GLfloat ground_exp2_punch_through; #ifdef FG_NETWORK_OLK ssgSelector *fgd_sel = NULL; ssgTransform *fgd_pos = NULL; #endif // Sky structures SGSky *thesky; #ifdef FG_USE_CLOUDS_3D SkySceneLoader *sgClouds3d; bool _bcloud_orig = true; #endif // hack sgMat4 copy_of_ssgOpenGLAxisSwapMatrix = { { 1.0f, 0.0f, 0.0f, 0.0f }, { 0.0f, 0.0f, -1.0f, 0.0f }, { 0.0f, 1.0f, 0.0f, 0.0f }, { 0.0f, 0.0f, 0.0f, 1.0f } }; // The following defines flightgear options. Because glutlib will also // want to parse its own options, those options must not be included here // or they will get parsed by the main program option parser. Hence case // is significant for any option added that might be in conflict with // glutlib's parser. // // glutlib parses for: // -display // -direct (invalid in Win32) // -geometry // -gldebug // -iconized // -indirect (invalid in Win32) // -synce // // Note that glutlib depends upon strings while this program's // option parser wants only initial characters followed by numbers // or pathnames. // ssgSimpleState *cloud3d_imposter_state; ssgSimpleState *default_state; ssgSimpleState *hud_and_panel; ssgSimpleState *menus; SGTimeStamp last_time_stamp; SGTimeStamp current_time_stamp; void fgBuildRenderStates( void ) { default_state = new ssgSimpleState; default_state->ref(); default_state->disable( GL_TEXTURE_2D ); default_state->enable( GL_CULL_FACE ); default_state->enable( GL_COLOR_MATERIAL ); default_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE ); default_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 ); default_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 ); default_state->disable( GL_BLEND ); default_state->disable( GL_ALPHA_TEST ); default_state->disable( GL_LIGHTING ); cloud3d_imposter_state = new ssgSimpleState; cloud3d_imposter_state->ref(); cloud3d_imposter_state->enable( GL_TEXTURE_2D ); cloud3d_imposter_state->enable( GL_CULL_FACE ); cloud3d_imposter_state->enable( GL_COLOR_MATERIAL ); cloud3d_imposter_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE ); cloud3d_imposter_state->setMaterial( GL_DIFFUSE, 1, 1, 1, 1 ); cloud3d_imposter_state->setMaterial( GL_AMBIENT, 1, 1, 1, 1 ); cloud3d_imposter_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 ); cloud3d_imposter_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 ); cloud3d_imposter_state->enable( GL_BLEND ); cloud3d_imposter_state->enable( GL_ALPHA_TEST ); cloud3d_imposter_state->disable( GL_LIGHTING ); hud_and_panel = new ssgSimpleState; hud_and_panel->ref(); hud_and_panel->disable( GL_CULL_FACE ); hud_and_panel->disable( GL_TEXTURE_2D ); hud_and_panel->disable( GL_LIGHTING ); hud_and_panel->enable( GL_BLEND ); menus = new ssgSimpleState; menus->ref(); menus->disable( GL_CULL_FACE ); menus->disable( GL_TEXTURE_2D ); menus->enable( GL_BLEND ); } // fgInitVisuals() -- Initialize various GL/view parameters void fgInitVisuals( void ) { fgLIGHT *l; l = &cur_light_params; #ifndef GLUT_WRONG_VERSION // Go full screen if requested ... if ( fgGetBool("/sim/startup/fullscreen") ) { glutFullScreen(); } #endif // If enabled, normal vectors specified with glNormal are scaled // to unit length after transformation. Enabling this has // performance implications. See the docs for glNormal. // glEnable( GL_NORMALIZE ); glEnable( GL_LIGHTING ); glEnable( GL_LIGHT0 ); // glLightfv( GL_LIGHT0, GL_POSITION, l->sun_vec ); // done later with ssg sgVec3 sunpos; sgSetVec3( sunpos, l->sun_vec[0], l->sun_vec[1], l->sun_vec[2] ); ssgGetLight( 0 ) -> setPosition( sunpos ); glFogi (GL_FOG_MODE, GL_EXP2); if ( (!strcmp(fgGetString("/sim/rendering/fog"), "disabled")) || (!fgGetBool("/sim/rendering/shading"))) { // if fastest fog requested, or if flat shading force fastest glHint ( GL_FOG_HINT, GL_FASTEST ); } else if ( !strcmp(fgGetString("/sim/rendering/fog"), "nicest") ) { glHint ( GL_FOG_HINT, GL_NICEST ); } if ( fgGetBool("/sim/rendering/wireframe") ) { // draw wire frame glPolygonMode( GL_FRONT_AND_BACK, GL_LINE ); } // This is the default anyways, but it can't hurt glFrontFace ( GL_CCW ); // Just testing ... // glEnable(GL_POINT_SMOOTH); // glEnable(GL_LINE_SMOOTH); // glEnable(GL_POLYGON_SMOOTH); } // For HiRes screen Dumps using Brian Pauls TR Library void trRenderFrame( void ) { if ( fgPanelVisible() ) { GLfloat height = fgGetInt("/sim/startup/ysize"); GLfloat view_h = (globals->get_current_panel()->getViewHeight() - globals->get_current_panel()->getYOffset()) * (height / 768.0) + 1; glTranslatef( 0.0, view_h, 0.0 ); } 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(); 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 ); glLightModeli( GL_LIGHT_MODEL_LOCAL_VIEWER, GL_FALSE ); 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 ); ssgSetNearFar( scene_nearplane, scene_farplane ); ssgCullAndDraw( globals->get_scenery()->get_scene_graph() ); // draw the lights glFogf (GL_FOG_DENSITY, rwy_exp2_punch_through); ssgSetNearFar( scene_nearplane, scene_farplane ); ssgCullAndDraw( globals->get_scenery()->get_rwy_lights_root() ); ssgCullAndDraw( globals->get_scenery()->get_gnd_lights_root() ); if (fgGetBool("/environment/clouds/status")) thesky->postDraw( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER ); globals->get_model_mgr()->draw(); globals->get_aircraft_model()->draw(); } // Update all Visuals (redraws anything graphics related) void fgRenderFrame() { GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 }; GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 }; // Process/manage pending events global_events.update( delta_time_sec ); // static const SGPropertyNode *longitude // = fgGetNode("/position/longitude-deg"); // static const SGPropertyNode *latitude // = fgGetNode("/position/latitude-deg"); // static const SGPropertyNode *altitude // = fgGetNode("/position/altitude-ft"); static const SGPropertyNode *groundlevel_nearplane = fgGetNode("/sim/current-view/ground-level-nearplane-m"); // Update the default (kludged) properties. fgUpdateProps(); FGViewer *current__view = globals->get_current_view(); fgLIGHT *l = &cur_light_params; static double last_visibility = -9999; // update fog params double actual_visibility; if (fgGetBool("/environment/clouds/status")) actual_visibility = thesky->get_visibility(); else actual_visibility = fgGetDouble("/environment/visibility-m"); if ( actual_visibility != last_visibility ) { last_visibility = actual_visibility; fog_exp_density = m_log01 / actual_visibility; fog_exp2_density = sqrt_m_log01 / actual_visibility; ground_exp2_punch_through = sqrt_m_log01 / (actual_visibility * 1.5); if ( actual_visibility < 8000 ) { rwy_exp2_punch_through = sqrt_m_log01 / (actual_visibility * 2.5); taxi_exp2_punch_through = sqrt_m_log01 / (actual_visibility * 1.5); } else { rwy_exp2_punch_through = sqrt_m_log01 / ( 8000 * 2.5 ); taxi_exp2_punch_through = sqrt_m_log01 / ( 8000 * 1.5 ); } } // double angle; // GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 }; // GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 }; // GLfloat terrain_color[4] = { 0.54, 0.44, 0.29, 1.0 }; // GLfloat mat_shininess[] = { 10.0 }; GLbitfield clear_mask; if ( idle_state != 1000 ) { // still initializing, draw the splash screen if ( fgGetBool("/sim/startup/splash-screen") ) { fgSplashUpdate(0.0, 1.0); } // Keep resetting sim time while the sim is initializing globals->set_sim_time_sec( 0.0 ); SGAnimation::set_sim_time_sec( 0.0 ); } else { // idle_state is now 1000 meaning we've finished all our // initializations and are running the main loop, so this will // now work without seg faulting the system. // calculate our current position in cartesian space globals->get_scenery()->set_center( globals->get_scenery()->get_next_center() ); // update view port fgReshape( fgGetInt("/sim/startup/xsize"), fgGetInt("/sim/startup/ysize") ); if ( fgGetBool("/sim/rendering/clouds3d") ) { glClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT ); cloud3d_imposter_state->force(); glDisable( GL_FOG ); glColor4f( 1.0, 1.0, 1.0, 1.0 ); glEnable(GL_DEPTH_TEST); glEnable(GL_BLEND); glBlendFunc( GL_ONE, GL_ONE_MINUS_SRC_ALPHA ) ; #ifdef FG_USE_CLOUDS_3D if ( _bcloud_orig ) { Point3D c = globals->get_scenery()->get_center(); sgClouds3d->Set_Cloud_Orig( &c ); _bcloud_orig = false; } sgClouds3d->Update( current__view->get_absolute_view_pos() ); #endif glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ; glDisable(GL_DEPTH_TEST); } clear_mask = GL_DEPTH_BUFFER_BIT; if ( fgGetBool("/sim/rendering/wireframe") ) { clear_mask |= GL_COLOR_BUFFER_BIT; } if ( fgGetBool("/sim/rendering/skyblend") ) { if ( fgGetBool("/sim/rendering/textures") ) { // glClearColor(black[0], black[1], black[2], black[3]); glClearColor(l->adj_fog_color[0], l->adj_fog_color[1], l->adj_fog_color[2], l->adj_fog_color[3]); clear_mask |= GL_COLOR_BUFFER_BIT; } } else { glClearColor(l->sky_color[0], l->sky_color[1], l->sky_color[2], l->sky_color[3]); clear_mask |= GL_COLOR_BUFFER_BIT; } glClear( clear_mask ); // Tell GL we are switching to model view parameters // I really should create a derived ssg node or use a call // back or something so that I can draw the sky within the // ssgCullAndDraw() function, but for now I just mimic what // ssg does to set up the model view matrix glMatrixMode(GL_MODELVIEW); glLoadIdentity(); ssgSetCamera( (sgVec4 *)current__view->get_VIEW() ); // set the opengl state to known default values default_state->force(); // update fog params if visibility has changed double visibility_meters = fgGetDouble("/environment/visibility-m"); thesky->set_visibility(visibility_meters); thesky->modify_vis( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER, ( global_multi_loop * fgGetInt("/sim/speed-up") ) / (double)fgGetInt("/sim/model-hz") ); // Set correct opengl fog density glFogf (GL_FOG_DENSITY, fog_exp2_density); // update the sky dome if ( fgGetBool("/sim/rendering/skyblend") ) { /* SG_LOG( SG_GENERAL, SG_BULK, "thesky->repaint() sky_color = " << cur_light_params.sky_color[0] << " " << cur_light_params.sky_color[1] << " " << cur_light_params.sky_color[2] << " " << cur_light_params.sky_color[3] ); SG_LOG( SG_GENERAL, SG_BULK, " fog = " << cur_light_params.fog_color[0] << " " << cur_light_params.fog_color[1] << " " << cur_light_params.fog_color[2] << " " << cur_light_params.fog_color[3] ); SG_LOG( SG_GENERAL, SG_BULK, " sun_angle = " << cur_light_params.sun_angle << " moon_angle = " << cur_light_params.moon_angle ); */ thesky->repaint( cur_light_params.sky_color, cur_light_params.adj_fog_color, cur_light_params.sun_angle, cur_light_params.moon_angle, globals->get_ephem()->getNumPlanets(), globals->get_ephem()->getPlanets(), globals->get_ephem()->getNumStars(), globals->get_ephem()->getStars() ); /* SG_LOG( SG_GENERAL, SG_BULK, "thesky->reposition( view_pos = " << view_pos[0] << " " << view_pos[1] << " " << view_pos[2] ); SG_LOG( SG_GENERAL, SG_BULK, " zero_elev = " << zero_elev[0] << " " << zero_elev[1] << " " << zero_elev[2] << " lon = " << cur_fdm_state->get_Longitude() << " lat = " << cur_fdm_state->get_Latitude() ); SG_LOG( SG_GENERAL, SG_BULK, " sun_rot = " << cur_light_params.sun_rotation << " gst = " << SGTime::cur_time_params->getGst() ); SG_LOG( SG_GENERAL, SG_BULK, " sun ra = " << globals->get_ephem()->getSunRightAscension() << " sun dec = " << globals->get_ephem()->getSunDeclination() << " moon ra = " << globals->get_ephem()->getMoonRightAscension() << " moon dec = " << globals->get_ephem()->getMoonDeclination() ); */ thesky->reposition( current__view->get_view_pos(), current__view->get_zero_elev(), current__view->get_world_up(), current__view->getLongitude_deg() * SGD_DEGREES_TO_RADIANS, current__view->getLatitude_deg() * SGD_DEGREES_TO_RADIANS, current__view->getAltitudeASL_ft() * SG_FEET_TO_METER, cur_light_params.sun_rotation, globals->get_time_params()->getGst(), globals->get_ephem()->getSunRightAscension(), globals->get_ephem()->getSunDeclination(), 50000.0, globals->get_ephem()->getMoonRightAscension(), globals->get_ephem()->getMoonDeclination(), 50000.0 ); } glEnable( GL_DEPTH_TEST ); if ( strcmp(fgGetString("/sim/rendering/fog"), "disabled") ) { glEnable( GL_FOG ); glFogi( GL_FOG_MODE, GL_EXP2 ); glFogfv( GL_FOG_COLOR, l->adj_fog_color ); } // 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. 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_specular ); // texture parameters // glEnable( GL_TEXTURE_2D ); glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ; glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ; // glMatrixMode( GL_PROJECTION ); // glLoadIdentity(); ssgSetFOV( current__view->get_h_fov(), current__view->get_v_fov() ); double agl = current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER - globals->get_scenery()->get_cur_elev(); if ( agl > 10.0 ) { scene_nearplane = 10.0f; scene_farplane = 120000.0f; } else { scene_nearplane = groundlevel_nearplane->getDoubleValue(); scene_farplane = 120000.0f; } ssgSetNearFar( scene_nearplane, scene_farplane ); // $$$ begin - added VS Renganthan 17 Oct 2K if(objc) fgUpdateDCS(); // $$$ end - added VS Renganthan 17 Oct 2K # ifdef FG_NETWORK_OLK if ( fgGetBool("/sim/networking/network-olk") ) { sgCoord fgdpos; other = head->next; /* put listpointer to start */ while ( other != tail) { /* display all except myself */ if ( strcmp( other->ipadr, fgd_mcp_ip) != 0) { other->fgd_sel->select(1); sgSetCoord( &fgdpos, other->sgFGD_COORD ); other->fgd_pos->setTransform( &fgdpos ); } other = other->next; } // fgd_sel->select(1); // sgCopyMat4( sgTUX, current_view.sgVIEW); // sgCoord fgdpos; // sgSetCoord( &fgdpos, sgFGD_VIEW ); // fgd_pos->setTransform( &fgdpos); } # endif #ifdef FG_MPLAYER_AS // Update any multiplayer models globals->get_multiplayer_rx_mgr()->Update(); #endif if ( fgGetBool("/sim/rendering/skyblend") && fgGetBool("/sim/rendering/draw-otw") ) { // 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 glEnable( GL_DEPTH_TEST ); ssgSetNearFar( scene_nearplane, scene_farplane ); if ( fgGetBool("/sim/rendering/wireframe") ) { // draw wire frame glPolygonMode( GL_FRONT_AND_BACK, GL_LINE ); } if ( fgGetBool("/sim/rendering/draw-otw") ) { ssgCullAndDraw( globals->get_scenery()->get_scene_graph() ); } // This is a bit kludgy. Every 200 frames, do an extra // traversal of the scene graph without drawing anything, but // with the field-of-view set to 360x360 degrees. This // ensures that out-of-range random objects that are not in // the current view frustum will still be freed properly. static int counter = 0; counter++; if (counter == 200) { sgFrustum f; f.setFOV(360, 360); // No need to put the near plane too close; // this way, at least the aircraft can be // culled. f.setNearFar(1000, 1000000); sgMat4 m; ssgGetModelviewMatrix(m); globals->get_scenery()->get_scene_graph()->cull(&f, m, true); counter = 0; } // change state for lighting here // draw runway lighting glFogf (GL_FOG_DENSITY, rwy_exp2_punch_through); ssgSetNearFar( scene_nearplane, scene_farplane ); #ifdef FG_EXPERIMENTAL_POINT_LIGHTING // Enable states for drawing points with GL_extension glEnable(GL_POINT_SMOOTH); if ( fgGetBool("/sim/rendering/distance-attenuation") && glutExtensionSupported("GL_EXT_point_parameters") ) { float quadratic[3] = {1.0, 0.001, 0.0000001}; // makes the points fade as they move away glPointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT, quadratic); glPointParameterfEXT(GL_POINT_SIZE_MIN_EXT, 1.0); } glPointSize(4.0); // blending function for runway lights glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) ; #endif glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP); glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP); glEnable(GL_TEXTURE_GEN_S); glEnable(GL_TEXTURE_GEN_T); glPolygonMode(GL_FRONT, GL_POINT); // draw runway lighting if ( fgGetBool("/sim/rendering/draw-otw") ) { ssgCullAndDraw( globals->get_scenery()->get_rwy_lights_root() ); } // change punch through and then draw taxi lighting glFogf ( GL_FOG_DENSITY, fog_exp2_density ); // sgVec3 taxi_fog; // sgSetVec3( taxi_fog, 0.0, 0.0, 0.0 ); // glFogfv ( GL_FOG_COLOR, taxi_fog ); if ( fgGetBool("/sim/rendering/draw-otw") ) { ssgCullAndDraw( globals->get_scenery()->get_taxi_lights_root() ); } // clean up lighting glPolygonMode(GL_FRONT, GL_FILL); glDisable(GL_TEXTURE_GEN_S); glDisable(GL_TEXTURE_GEN_T); //static int _frame_count = 0; //if (_frame_count % 30 == 0) { // printf("SSG: %s\n", ssgShowStats()); //} //else { // ssgShowStats(); //} //_frame_count++; #ifdef FG_EXPERIMENTAL_POINT_LIGHTING if ( fgGetBool("/sim/rendering/distance-attenuation") && glutExtensionSupported("GL_EXT_point_parameters") ) { glPointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT, default_attenuation); } glPointSize(1.0); glDisable(GL_POINT_SMOOTH); #endif // draw ground lighting glFogf (GL_FOG_DENSITY, ground_exp2_punch_through); if ( fgGetBool("/sim/rendering/draw-otw") ) { ssgCullAndDraw( globals->get_scenery()->get_gnd_lights_root() ); } if ( fgGetBool("/sim/rendering/skyblend") ) { // draw the sky cloud layers if ( fgGetBool("/environment/clouds/status") && fgGetBool("/sim/rendering/draw-otw") ) { thesky->postDraw( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER ); } } if ( fgGetBool("/sim/rendering/clouds3d") && fgGetBool("/sim/rendering/draw-otw") ) { glDisable( GL_FOG ); glDisable( GL_LIGHTING ); // cout << "drawing new clouds" << endl; glEnable(GL_DEPTH_TEST); glEnable(GL_BLEND); glBlendFunc( GL_ONE, GL_ONE_MINUS_SRC_ALPHA ) ; /* glEnable( GL_TEXTURE_2D ); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); */ #ifdef FG_USE_CLOUDS_3D sgClouds3d->Draw((sgVec4 *)current__view->get_VIEW()); #endif glEnable( GL_FOG ); glEnable( GL_LIGHTING ); glEnable( GL_DEPTH_TEST ); glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ; } if ( fgGetBool("/sim/rendering/draw-otw") ) { globals->get_model_mgr()->draw(); globals->get_aircraft_model()->draw(); } // display HUD && Panel glDisable( GL_FOG ); glDisable( GL_DEPTH_TEST ); // glDisable( GL_CULL_FACE ); // glDisable( GL_TEXTURE_2D ); // update the controls subsystem globals->get_controls()->update(delta_time_sec); hud_and_panel->apply(); fgCockpitUpdate(); // Use the hud_and_panel ssgSimpleState for rendering the ATC output // This only works properly if called before the panel call if((fgGetBool("/sim/ATC/enabled")) || (fgGetBool("/sim/ai-traffic/enabled"))) globals->get_ATC_display()->update(delta_time_sec); // update the panel subsystem if ( globals->get_current_panel() != NULL ) { globals->get_current_panel()->update(delta_time_sec); } fgUpdate3DPanels(); // We can do translucent menus, so why not. :-) menus->apply(); glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ; puDisplay(); // glDisable ( GL_BLEND ) ; glEnable( GL_DEPTH_TEST ); glEnable( GL_FOG ); // Fade out the splash screen over the first three seconds. double t = globals->get_sim_time_sec(); if ( t <= 1.0 ) { fgSplashUpdate(0.0, 1.0); } else if ( t <= 3.0) { fgSplashUpdate(0.0, (3.0 - t) / 2.0); } } glutSwapBuffers(); } // Update internal time dependent calculations (i.e. flight model) // FIXME: this distinction is obsolete; all subsystems now get delta // time on update. void fgUpdateTimeDepCalcs() { static bool inited = false; //SG_LOG(SG_FLIGHT,SG_INFO, "Updating time dep calcs()"); fgLIGHT *l = &cur_light_params; // Initialize the FDM here if it hasn't been and if we have a // scenery elevation hit. // cout << "cur_fdm_state->get_inited() = " << cur_fdm_state->get_inited() // << " cur_elev = " << scenery.get_cur_elev() << endl; if ( !cur_fdm_state->get_inited() && globals->get_scenery()->get_cur_elev() > -9990 ) { SG_LOG(SG_FLIGHT,SG_INFO, "Finally initializing fdm"); cur_fdm_state->init(); if ( cur_fdm_state->get_bound() ) { cur_fdm_state->unbind(); } cur_fdm_state->bind(); } #ifndef FG_WEATHERCM globals->get_environment_mgr()->update(delta_time_sec); #endif // conceptually, the following block could be done for each fdm // instance ... if ( !cur_fdm_state->get_inited() ) { // do nothing, fdm isn't inited yet } else { // we have been inited, and we are good to go ... if ( !inited ) { inited = true; } globals->get_autopilot()->update(delta_time_sec); cur_fdm_state->update(delta_time_sec); } globals->get_model_mgr()->update(delta_time_sec); globals->get_aircraft_model()->update(delta_time_sec); // update the view angle globals->get_viewmgr()->update(delta_time_sec); l->UpdateAdjFog(); // Update solar system globals->get_ephem()->update( globals->get_time_params()->getMjd(), globals->get_time_params()->getLst(), cur_fdm_state->get_Latitude() ); // Update radio stack model current_radiostack->update(delta_time_sec); } void fgInitTimeDepCalcs( void ) { // noop for now } static const double alt_adjust_ft = 3.758099; static const double alt_adjust_m = alt_adjust_ft * SG_FEET_TO_METER; // What should we do when we have nothing else to do? Let's get ready // for the next move and update the display? static void fgMainLoop( void ) { static const SGPropertyNode *longitude = fgGetNode("/position/longitude-deg"); static const SGPropertyNode *latitude = fgGetNode("/position/latitude-deg"); static const SGPropertyNode *altitude = fgGetNode("/position/altitude-ft"); static const SGPropertyNode *clock_freeze = fgGetNode("/sim/freeze/clock", true); static const SGPropertyNode *cur_time_override = fgGetNode("/sim/time/cur-time-override", true); // Update the elapsed time. static bool first_time = true; if ( first_time ) { last_time_stamp.stamp(); first_time = false; } current_time_stamp.stamp(); delta_time_sec = double(current_time_stamp - last_time_stamp) / 1000000.0; if (clock_freeze->getBoolValue()) delta_time_sec = 0; last_time_stamp = current_time_stamp; globals->inc_sim_time_sec( delta_time_sec ); SGAnimation::set_sim_time_sec( globals->get_sim_time_sec() ); static long remainder = 0; long elapsed; #ifdef FANCY_FRAME_COUNTER int i; double accum; #else static time_t last_time = 0; static int frames = 0; #endif // FANCY_FRAME_COUNTER SGTime *t = globals->get_time_params(); sglog().setLogLevels( SG_ALL, (sgDebugPriority)fgGetInt("/sim/log-level") ); sglog().setLogLevels( SG_ALL, SG_INFO ); SGLocation * acmodel_location = 0; if(cur_fdm_state->getACModel() != 0) { acmodel_location = (SGLocation *) cur_fdm_state->getACModel()->get3DModel()->getSGLocation(); } SG_LOG( SG_ALL, SG_DEBUG, "Running Main Loop"); SG_LOG( SG_ALL, SG_DEBUG, "======= ==== ===="); #ifdef FG_NETWORK_OLK if ( fgGetBool("/sim/networking/network-olk") ) { if ( net_is_registered == 0 ) { // We first have to reg. to fgd // printf("FGD: Netupdate\n"); fgd_send_com( "A", FGFS_host); // Send Mat4 data fgd_send_com( "B", FGFS_host); // Recv Mat4 data } } #endif #if defined( ENABLE_PLIB_JOYSTICK ) // Read joystick and update control settings // 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 // init routine and we don't have to worry about it again. #endif // Fix elevation. I'm just sticking this here for now, it should // probably move eventually /* printf("Before - ground = %.2f runway = %.2f alt = %.2f\n", scenery.get_cur_elev(), cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER, cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */ // Curt is this code used? I don't see any problems when I comment it out. if ( acmodel_location != 0 ) { if ( acmodel_location->get_cur_elev_m() > -9990 && cur_fdm_state->get_inited() ) { if ( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER < (acmodel_location->get_cur_elev_m() + alt_adjust_m - 3.0) ) { // now set aircraft altitude above ground printf("(*) Current Altitude = %.2f < %.2f forcing to %.2f\n", cur_fdm_state->get_Altitude() * SG_FEET_TO_METER, acmodel_location->get_cur_elev_m() + alt_adjust_m - 3.0, acmodel_location->get_cur_elev_m() + alt_adjust_m ); cur_fdm_state->set_Altitude( (acmodel_location->get_cur_elev_m() + alt_adjust_m) * SG_METER_TO_FEET ); SG_LOG( SG_ALL, SG_DEBUG, "<*> resetting altitude to " << cur_fdm_state->get_Altitude() * SG_FEET_TO_METER << " meters" ); } } } // End of code in question. (see Curt is this code used? above) /* printf("Adjustment - ground = %.2f runway = %.2f alt = %.2f\n", scenery.get_cur_elev(), 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" static bool last_clock_freeze = false; if ( clock_freeze->getBoolValue() ) { // clock freeze requested if ( cur_time_override->getLongValue() == 0 ) { fgSetLong( "/sim/time/cur-time-override", t->get_cur_time() ); globals->set_warp( 0 ); } } else { // no clock freeze requested if ( last_clock_freeze == true ) { // clock just unfroze, let's set warp as the difference // between frozen time and current time so we don't get a // time jump (and corresponding sky object and lighting // jump.) globals->set_warp( cur_time_override->getLongValue() - time(NULL) ); fgSetLong( "/sim/time/cur-time-override", 0 ); } if ( globals->get_warp_delta() != 0 ) { globals->inc_warp( globals->get_warp_delta() ); } } last_clock_freeze = clock_freeze->getBoolValue(); t->update( longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, cur_time_override->getLongValue(), globals->get_warp() ); if ( globals->get_warp_delta() != 0 ) { fgUpdateSkyAndLightingParams(); } // update magvar model globals->get_mag()->update( longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS, altitude->getDoubleValue() * SG_FEET_TO_METER, globals->get_time_params()->getJD() ); // Get elapsed time (in usec) for this past frame elapsed = fgGetTimeInterval(); SG_LOG( SG_ALL, SG_DEBUG, "Elapsed time interval is = " << elapsed << ", previous remainder is = " << remainder ); // Calculate frame rate average #ifdef FANCY_FRAME_COUNTER /* old fps calculation */ if ( elapsed > 0 ) { double tmp; accum = 0.0; for ( i = FG_FRAME_RATE_HISTORY - 2; i >= 0; i-- ) { tmp = general.get_frame(i); accum += tmp; // printf("frame[%d] = %.2f\n", i, g->frames[i]); general.set_frame(i+1,tmp); } tmp = 1000000.0 / (float)elapsed; general.set_frame(0,tmp); // printf("frame[0] = %.2f\n", general.frames[0]); accum += tmp; general.set_frame_rate(accum / (float)FG_FRAME_RATE_HISTORY); // printf("ave = %.2f\n", general.frame_rate); } #else if ( (t->get_cur_time() != last_time) && (last_time > 0) ) { general.set_frame_rate( frames ); fgSetInt("/sim/frame-rate", frames); SG_LOG( SG_ALL, SG_DEBUG, "--> Frame rate is = " << general.get_frame_rate() ); frames = 0; } last_time = t->get_cur_time(); ++frames; #endif // Run ATC subsystem if (fgGetBool("/sim/ATC/enabled")) globals->get_ATC_mgr()->update(delta_time_sec); // Run the AI subsystem if (fgGetBool("/sim/ai-traffic/enabled")) globals->get_AI_mgr()->update(delta_time_sec); // Run flight model // Calculate model iterations needed for next frame elapsed += remainder; global_multi_loop = (long)(((double)elapsed * 0.000001) * fgGetInt("/sim/model-hz")); remainder = elapsed - ( (global_multi_loop*1000000) / fgGetInt("/sim/model-hz") ); SG_LOG( SG_ALL, SG_DEBUG, "Model iterations needed = " << global_multi_loop << ", new remainder = " << remainder ); // chop max interations to something reasonable if the sim was // delayed for an excesive amount of time if ( global_multi_loop > 2.0 * fgGetInt("/sim/model-hz") ) { global_multi_loop = (int)(2.0 * fgGetInt("/sim/model-hz") ); remainder = 0; } // flight model if ( global_multi_loop > 0 ) { fgUpdateTimeDepCalcs(); } else { SG_LOG( SG_ALL, SG_DEBUG, "Elapsed time is zero ... we're zinging" ); } // Do any I/O channel work that might need to be done globals->get_io()->update( delta_time_sec ); // see if we need to load any deferred-load textures material_lib.load_next_deferred(); // Run audio scheduler #ifdef ENABLE_AUDIO_SUPPORT if ( fgGetBool("/sim/sound/audible") && globals->get_soundmgr()->is_working() ) { globals->get_soundmgr()->update( delta_time_sec ); } #endif globals->get_subsystem_mgr()->update(delta_time_sec); // // Tile Manager updates - see if we need to load any new scenery tiles. // this code ties together the fdm, viewer and scenery classes... // we may want to move this to it's own class at some point // double visibility_meters = fgGetDouble("/environment/visibility-m"); FGViewer *current_view = globals->get_current_view(); // update tile manager for FDM... // ...only if location is different than the viewer (to avoid duplicating effort) if( acmodel_location != current_view->getSGLocation() ) { if( acmodel_location != 0 ) { globals->get_tile_mgr()->prep_ssg_nodes( acmodel_location, visibility_meters ); globals->get_tile_mgr()-> update( acmodel_location, visibility_meters, acmodel_location->get_absolute_view_pos(globals->get_scenery()->get_center()) ); // save results of update in SGLocation for fdm... if ( globals->get_scenery()->get_cur_elev() > -9990 ) { acmodel_location-> set_cur_elev_m( globals->get_scenery()->get_cur_elev() ); } acmodel_location-> set_tile_center( globals->get_scenery()->get_next_center() ); } } globals->get_tile_mgr()->prep_ssg_nodes( current_view->getSGLocation(), visibility_meters ); // update tile manager for view... // IMPORTANT!!! the tilemgr update for view location _must_ be done last // after the FDM's until all of Flight Gear code references the viewer's location // for elevation instead of the "scenery's" current elevation. SGLocation *view_location = globals->get_current_view()->getSGLocation(); globals->get_tile_mgr()->update( view_location, visibility_meters, current_view->get_absolute_view_pos() ); // save results of update in SGLocation for fdm... if ( globals->get_scenery()->get_cur_elev() > -9990 ) { current_view->getSGLocation()->set_cur_elev_m( globals->get_scenery()->get_cur_elev() ); } current_view->getSGLocation()->set_tile_center( globals->get_scenery()->get_next_center() ); // If fdm location is same as viewer's then we didn't do the update for fdm location // above so we need to save the viewer results in the fdm SGLocation as well... if( acmodel_location == current_view->getSGLocation() ) { if( acmodel_location != 0 ) { if ( globals->get_scenery()->get_cur_elev() > -9990 ) { acmodel_location->set_cur_elev_m( globals->get_scenery()->get_cur_elev() ); } acmodel_location->set_tile_center( globals->get_scenery()->get_next_center() ); } } // END Tile Manager udpates // redraw display fgRenderFrame(); SG_LOG( SG_ALL, SG_DEBUG, "" ); } // This is the top level master main function that is registered as // our idle funciton // The first few passes take care of initialization things (a couple // per pass) and once everything has been initialized fgMainLoop from // then on. static void fgIdleFunction ( void ) { // printf("idle state == %d\n", idle_state); if ( idle_state == 0 ) { // Initialize the splash screen right away if ( fgGetBool("/sim/startup/splash-screen") ) { fgSplashInit(); } idle_state++; } else if ( idle_state == 1 ) { // Initialize audio support #ifdef ENABLE_AUDIO_SUPPORT // Start the intro music if ( fgGetBool("/sim/startup/intro-music") ) { SGPath mp3file( globals->get_fg_root() ); mp3file.append( "Sounds/intro.mp3" ); SG_LOG( SG_GENERAL, SG_INFO, "Starting intro music: " << mp3file.str() ); #if defined( __CYGWIN__ ) string command = "start /m `cygpath -w " + mp3file.str() + "`"; #elif defined( WIN32 ) string command = "start /m " + mp3file.str(); #else string command = "mpg123 " + mp3file.str() + "> /dev/null 2>&1"; #endif system ( command.c_str() ); } #endif idle_state++; } else if ( idle_state == 2 ) { // These are a few miscellaneous things that aren't really // "subsystems" but still need to be initialized. #ifdef USE_GLIDE if ( strstr ( general.get_glRenderer(), "Glide" ) ) { grTexLodBiasValue ( GR_TMU0, 1.0 ) ; } #endif idle_state++; } else if ( idle_state == 3 ) { // This is the top level init routine which calls all the // other subsystem initialization routines. If you are adding // a subsystem to flightgear, its initialization call should // located in this routine. if( !fgInitSubsystems()) { SG_LOG( SG_GENERAL, SG_ALERT, "Subsystem initializations failed ..." ); exit(-1); } idle_state++; } else if ( idle_state == 4 ) { // setup OpenGL view parameters fgInitVisuals(); // Read the list of available aircrafts fgReadAircraft(); idle_state++; } else if ( idle_state == 5 ) { idle_state++; } else if ( idle_state == 6 ) { // sleep(1); idle_state = 1000; SG_LOG( SG_GENERAL, SG_INFO, "Panel visible = " << fgPanelVisible() ); fgReshape( fgGetInt("/sim/startup/xsize"), fgGetInt("/sim/startup/ysize") ); } if ( idle_state == 1000 ) { // We've finished all our initialization steps, from now on we // run the main loop. glutIdleFunc(fgMainLoop); } else { if ( fgGetBool("/sim/startup/splash-screen") ) { fgSplashUpdate(0.0, 1.0); } } } // options.cxx needs to see this for toggle_panel() // Handle new window size or exposure void fgReshape( int width, int height ) { int view_h; if ( (!fgGetBool("/sim/virtual-cockpit")) && fgPanelVisible() && idle_state == 1000 ) { view_h = (int)(height * (globals->get_current_panel()->getViewHeight() - globals->get_current_panel()->getYOffset()) / 768.0); } else { view_h = height; } // for all views FGViewMgr *viewmgr = globals->get_viewmgr(); for ( int i = 0; i < viewmgr->size(); ++i ) { viewmgr->get_view(i)-> set_aspect_ratio((float)view_h / (float)width); } glViewport( 0, (GLint)(height - view_h), (GLint)(width), (GLint)(view_h) ); fgSetInt("/sim/startup/xsize", width); fgSetInt("/sim/startup/ysize", height); guiInitMouse(width, height); ssgSetFOV( viewmgr->get_current_view()->get_h_fov(), viewmgr->get_current_view()->get_v_fov() ); fgHUDReshape(); #ifdef FG_USE_CLOUDS_3D sgClouds3d->Resize( viewmgr->get_current_view()->get_h_fov(), viewmgr->get_current_view()->get_v_fov() ); #endif } // Initialize GLUT and define a main window static bool fgGlutInit( int *argc, char **argv ) { #if !defined( macintosh ) // GLUT will extract all glut specific options so later on we only // need wory about our own. glutInit(argc, argv); #endif // Define Display Parameters. Clouds3d works best with --bpp32 option if ( fgGetBool("/sim/rendering/clouds3d") ) { glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE | GLUT_ALPHA ); } else { glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE ); } SG_LOG( SG_GENERAL, SG_INFO, "Opening a window: " << fgGetInt("/sim/startup/xsize") << "x" << fgGetInt("/sim/startup/ysize") ); // Define initial window size glutInitWindowSize( fgGetInt("/sim/startup/xsize"), fgGetInt("/sim/startup/ysize") ); // Initialize windows if ( !fgGetBool("/sim/startup/game-mode")) { // Open the regular window glutCreateWindow("FlightGear"); #ifndef GLUT_WRONG_VERSION } else { // Open the cool new 'game mode' window char game_mode_str[256]; //#define SYNC_OPENGL_WITH_DESKTOP_SETTINGS #if defined(WIN32) && defined(SYNC_OPENGL_WITH_DESKTOP_SETTINGS) #ifndef ENUM_CURRENT_SETTINGS #define ENUM_CURRENT_SETTINGS ((DWORD)-1) #define ENUM_REGISTRY_SETTINGS ((DWORD)-2) #endif DEVMODE dm; dm.dmSize = sizeof(DEVMODE); EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &dm); fgSetInt("/sim/startup/xsize", dm.dmPelsWidth); fgSetInt("/sim/startup/ysize", dm.dmPelsHeight); glutInitWindowSize( fgGetInt("/sim/startup/xsize"), fgGetInt("/sim/startup/ysize") ); sprintf( game_mode_str, "%dx%d:%d@%d", dm.dmPelsWidth, dm.dmPelsHeight, dm.dmBitsPerPel, dm.dmDisplayFrequency ); #else // Open the cool new 'game mode' window sprintf( game_mode_str, "width=%d height=%d bpp=%d", fgGetInt("/sim/startup/xsize"), fgGetInt("/sim/startup/ysize"), fgGetInt("/sim/rendering/bits-per-pixel")); #endif // HAVE_WINDOWS_H SG_LOG( SG_GENERAL, SG_INFO, "game mode params = " << game_mode_str ); glutGameModeString( game_mode_str ); glutEnterGameMode(); #endif // GLUT_WRONG_VERSION } // This seems to be the absolute earliest in the init sequence // that these calls will return valid info. Too bad it's after // we've already created and sized out window. :-( general.set_glVendor( (char *)glGetString ( GL_VENDOR ) ); general.set_glRenderer( (char *)glGetString ( GL_RENDERER ) ); general.set_glVersion( (char *)glGetString ( GL_VERSION ) ); SG_LOG( SG_GENERAL, SG_INFO, general.get_glRenderer() ); GLint tmp; glGetIntegerv( GL_MAX_TEXTURE_SIZE, &tmp ); general.set_glMaxTexSize( tmp ); SG_LOG ( SG_GENERAL, SG_INFO, "Max texture size = " << tmp ); glGetIntegerv( GL_DEPTH_BITS, &tmp ); general.set_glDepthBits( tmp ); SG_LOG ( SG_GENERAL, SG_INFO, "Depth buffer bits = " << tmp ); return true; } // Initialize GLUT event handlers static bool fgGlutInitEvents( void ) { // call fgReshape() on window resizes glutReshapeFunc( fgReshape ); // keyboard and mouse callbacks are set in FGInput::init // call fgMainLoop() whenever there is // nothing else to do glutIdleFunc( fgIdleFunction ); // draw the scene glutDisplayFunc( fgRenderFrame ); return true; } // Main top level initialization static bool fgMainInit( int argc, char **argv ) { #if defined( macintosh ) freopen ("stdout.txt", "w", stdout ); freopen ("stderr.txt", "w", stderr ); argc = ccommand( &argv ); #endif // set default log levels sglog().setLogLevels( SG_ALL, SG_INFO ); string version; #ifdef FLIGHTGEAR_VERSION version = FLIGHTGEAR_VERSION; #else version = "unknown version"; #endif SG_LOG( SG_GENERAL, SG_INFO, "FlightGear: Version " << version ); SG_LOG( SG_GENERAL, SG_INFO, "Built with " << SG_COMPILER_STR << endl ); // Allocate global data structures. This needs to happen before // we parse command line options globals = new FGGlobals; #ifndef FG_WEATHERCM globals->set_environment_mgr(new FGEnvironmentMgr); #endif // seed the random number generater sg_srandom_time(); SGRoute *route = new SGRoute; globals->set_route( route ); FGControls *controls = new FGControls; globals->set_controls( controls ); string_list *col = new string_list; globals->set_channel_options_list( col ); // Scan the config file(s) and command line options to see if // fg_root was specified (ignore all other options for now) fgInitFGRoot(argc, argv); // Check for the correct base package version static char required_version[] = "0.9.1"; string base_version = fgBasePackageVersion(); if ( !(base_version == required_version) ) { // tell the operator how to use this application cerr << endl << "Base package check failed ... " \ << "Found version " << base_version << " at: " \ << globals->get_fg_root() << endl; cerr << "Please upgrade to version: " << required_version << endl; exit(-1); } // Initialize the Aircraft directory to "" (UIUC) aircraft_dir = ""; // Load the configuration parameters. (Command line options // overrides config file options. Config file options override // defaults.) if ( !fgInitConfig(argc, argv) ) { SG_LOG( SG_GENERAL, SG_ALERT, "Config option parsing failed ..." ); exit(-1); } // Initialize the Window/Graphics environment. if( !fgGlutInit(&argc, argv) ) { SG_LOG( SG_GENERAL, SG_ALERT, "GLUT initialization failed ..." ); exit(-1); } // Initialize the various GLUT Event Handlers. if( !fgGlutInitEvents() ) { SG_LOG( SG_GENERAL, SG_ALERT, "GLUT event handler initialization failed ..." ); exit(-1); } // Initialize plib net interface netInit( &argc, argv ); // Initialize ssg (from plib). Needs to come before we do any // other ssg stuff, but after opengl/glut has been initialized. ssgInit(); // Initialize the user interface (we need to do this before // passing off control to glut and before fgInitGeneral to get our // fonts !!! guiInit(); // Read the list of available aircrafts fgReadAircraft(); #ifdef GL_EXT_texture_lod_bias glTexEnvf( GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, -0.5 ) ; #endif #ifdef FG_EXPERIMENTAL_POINT_LIGHTING // get the address of our OpenGL extensions if ( fgGetBool("/sim/rendering/distance-attenuation") ) { #ifdef WIN32 glPointParameterfEXT = (PFNGLPOINTPARAMETERFEXTPROC) wglGetProcAddress("glPointParameterfEXT"); glPointParameterfvEXT = (PFNGLPOINTPARAMETERFVEXTPROC) wglGetProcAddress("glPointParameterfvEXT"); #elif linux glPointParameterfEXT = (OpenGLFuncExt) glXGetProcAddressARB((GLubyte *)"glPointParameterfEXT"); glPointParameterfvEXT = (OpenGLFuncExtv) glXGetProcAddressARB((GLubyte *)"glPointParameterfvEXT"); #endif } #endif // based on the requested presets, calculate the true starting // lon, lat fgInitNav(); fgInitPosition(); SGTime *t = fgInitTime(); globals->set_time_params( t ); // Do some quick general initializations if( !fgInitGeneral()) { SG_LOG( SG_GENERAL, SG_ALERT, "General initializations failed ..." ); exit(-1); } SGPath modelpath( globals->get_fg_root() ); ssgModelPath( (char *)modelpath.c_str() ); // Initialize the global scenery manager globals->set_scenery( new FGScenery ); globals->get_scenery()->init(); globals->get_scenery()->bind(); // Initialize the global tile manager globals->set_tile_mgr( new FGTileMgr ); //////////////////////////////////////////////////////////////////// // Initialize the property-based built-in commands //////////////////////////////////////////////////////////////////// fgInitCommands(); //////////////////////////////////////////////////////////////////// // Initialize the general model subsystem. //////////////////////////////////////////////////////////////////// globals->set_model_loader(new SGModelLoader); globals->set_model_mgr(new FGModelMgr); globals->get_model_mgr()->init(); globals->get_model_mgr()->bind(); //////////////////////////////////////////////////////////////////// // Initialize the 3D aircraft model subsystem. //////////////////////////////////////////////////////////////////// globals->set_aircraft_model(new FGAircraftModel); globals->get_aircraft_model()->init(); globals->get_aircraft_model()->bind(); //////////////////////////////////////////////////////////////////// // Initialize the view manager subsystem. //////////////////////////////////////////////////////////////////// FGViewMgr *viewmgr = new FGViewMgr; globals->set_viewmgr( viewmgr ); viewmgr->init(); viewmgr->bind(); // Initialize the sky 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(), globals->get_time_params()->getLst(), 0.0 ); globals->set_ephem( ephem ); // TODO: move to environment mgr thesky = new SGSky; SGPath texture_path(globals->get_fg_root()); texture_path.append("Textures"); texture_path.append("Sky"); for (int i = 0; i < FGEnvironmentMgr::MAX_CLOUD_LAYERS; i++) { SGCloudLayer * layer = new SGCloudLayer(texture_path.str()); thesky->add_cloud_layer(layer); } SGPath sky_tex_path( globals->get_fg_root() ); sky_tex_path.append( "Textures" ); sky_tex_path.append( "Sky" ); thesky->texture_path( sky_tex_path.str() ); thesky->build( 550.0, 550.0, globals->get_ephem()->getNumPlanets(), globals->get_ephem()->getPlanets(), 60000.0, globals->get_ephem()->getNumStars(), globals->get_ephem()->getStars(), 60000.0 ); // Initialize MagVar model SGMagVar *magvar = new SGMagVar(); globals->set_mag( magvar ); // airport = new ssgBranch; // airport->setName( "Airport Lighting" ); // lighting->addKid( airport ); // ADA fgLoadDCS(); // ADA #ifdef FG_NETWORK_OLK // Do the network intialization if ( fgGetBool("/sim/networking/network-olk") ) { printf("Multipilot mode %s\n", fg_net_init( globals->get_scenery()->get_scene_graph() ) ); } #endif // build our custom render states fgBuildRenderStates(); // pass control off to the master GLUT event handler glutMainLoop(); // we never actually get here ... but to avoid compiler warnings, // etc. return false; } // $$$ end - added VS Renganathan, 15 Oct 2K // - added Venky , 12 Nov 2K #if defined(__linux__) && defined(__i386__) static void handleFPE (int); static void initFPE () { fpu_control_t fpe_flags = 0; _FPU_GETCW(fpe_flags); // fpe_flags &= ~_FPU_MASK_IM; // invalid operation // fpe_flags &= ~_FPU_MASK_DM; // denormalized operand // fpe_flags &= ~_FPU_MASK_ZM; // zero-divide // fpe_flags &= ~_FPU_MASK_OM; // overflow // fpe_flags &= ~_FPU_MASK_UM; // underflow // fpe_flags &= ~_FPU_MASK_PM; // precision (inexact result) _FPU_SETCW(fpe_flags); signal(SIGFPE, handleFPE); } static void handleFPE (int num) { initFPE(); SG_LOG(SG_GENERAL, SG_ALERT, "Floating point interrupt (SIGFPE)"); } #endif #ifdef __APPLE__ typedef struct { int lo; int hi; } PSN; extern "C" { short CPSGetCurrentProcess(PSN *psn); short CPSSetProcessName (PSN *psn, char *processname); short CPSEnableForegroundOperation(PSN *psn, int _arg2, int _arg3, int _arg4, int _arg5); short CPSSetFrontProcess(PSN *psn); }; #define CPSEnableFG(psn) CPSEnableForegroundOperation(psn,0x03,0x3C,0x2C,0x1103) #endif // Main entry point; catch any exceptions that have made it this far. int main ( int argc, char **argv ) { // Enable floating-point exceptions for Linux/x86 #if defined(__linux__) && defined(__i386__) initFPE(); #endif // Enable floating-point exceptions for Windows #if defined( _MSC_VER ) && defined( DEBUG ) // Christian, we should document what this does _control87( _EM_INEXACT, _MCW_EM ); #endif #if defined( HAVE_BC5PLUS ) _control87(MCW_EM, MCW_EM); /* defined in float.h */ #endif // Keyboard focus hack #ifdef __APPLE__ { PSN psn; glutInit (&argc, argv); CPSGetCurrentProcess(&psn); CPSSetProcessName(&psn, "FlightGear"); CPSEnableFG(&psn); CPSSetFrontProcess(&psn); } #endif // FIXME: add other, more specific // exceptions. try { fgMainInit(argc, argv); } catch (sg_throwable &t) { // We must use cerr rather than // logging, since logging may be // disabled. cerr << "Fatal error: " << t.getFormattedMessage() << "\n (received from " << t.getOrigin() << ')' << endl; exit(1); } return 0; } void fgLoadDCS(void) { ssgEntity *ship_obj = NULL; char obj_filename[25]; for ( int k = 0; k < 32; k++ ) { ship_pos[k]=NULL; } SGPath tile_path( globals->get_fg_root()); tile_path.append( "Scenery" ); tile_path.append( "Objects.txt" ); sg_gzifstream in( tile_path.str() ); if ( ! in.is_open() ) { SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: " << tile_path.str() ); } else { SGPath modelpath( globals->get_fg_root() ); modelpath.append( "Models" ); modelpath.append( "Geometry" ); 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();*/ 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. if ( strcmp(obj_filename,"repeat") != 0) { ship_obj = globals->get_model_loader()->load_model( globals->get_fg_root(), obj_filename, globals->get_props(), globals->get_sim_time_sec() ); } if ( ship_obj != NULL ) { ship_obj->setName(obj_filename); if (objc == 0) ship_obj->clrTraversalMaskBits( SSGTRAV_HOT ); else ship_obj->setTraversalMaskBits( SSGTRAV_HOT ); ship_pos[objc]->addKid( ship_obj ); // add object to transform node ship_sel->addKid( ship_pos[objc] ); // add transform node to selector SG_LOG( SG_TERRAIN, SG_ALERT, "Loaded file: " << obj_filename ); } else { SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: " << obj_filename ); } // temporary hack for deck lights - ultimately should move to PLib (when??) //const char *extn = file_extension ( obj_filename ) ; if ( objc == 1 ){ // ssgVertexArray *lights = new ssgVertexArray( 100 ); ssgVertexArray *lightpoints = new ssgVertexArray( 100 ); ssgVertexArray *lightnormals = new ssgVertexArray( 100 ); ssgVertexArray *lightdir = new ssgVertexArray( 100 ); int ltype[500], light_type = 0; static int ltcount = 0; string token; sgVec3 rway_dir,rway_normal,lightpt; Point3D node; modelpath.append(obj_filename); sg_gzifstream in1( modelpath.str() ); if ( ! in1.is_open() ) { SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: " << modelpath.str() ); } else { while ( ! in1.eof() ) { in1 >> ::skipws; if ( in1.get( c ) && c == '#' ) { in1 >> skipeol; } else { in1.putback(c); in1 >> token; //cout << token << endl; if ( token == "runway" ) { in1 >> node; sgSetVec3 (rway_dir, node[0], node[1], node[2] ); } else if ( token == "edgelight" ) { in1 >> node; sgSetVec3 (rway_normal, node[0], node[1], node[2] ); light_type = 1; } else if ( token == "taxi" ) { in1 >> node; sgSetVec3 (rway_normal, node[0], node[1], node[2] ); light_type = 2; } else if ( token == "vasi" ) { in1 >> node; sgSetVec3 (rway_normal, node[0], node[1], node[2] ); light_type = 3; } else if ( token == "threshold" ) { in1 >> node; sgSetVec3 (rway_normal, node[0], node[1], node[2] ); light_type = 4; } else if ( token == "rabbit" ) { in1 >> node; sgSetVec3 (rway_normal, node[0], node[1], node[2] ); light_type = 5; } else if ( token == "ols" ) { in1 >> node; sgSetVec3 (rway_ols, node[0], node[1], node[2] ); light_type = 6; } else if ( token == "red" ) { in1 >> node; sgSetVec3 (rway_normal, node[0], node[1], node[2] ); light_type = 7; } else if ( token == "green" ) { in1 >> node; sgSetVec3 (rway_normal, node[0], node[1], node[2] ); light_type = 8; } else if ( token == "lp" ) { in1 >> node; sgSetVec3 (lightpt, node[0], node[1], node[2] ); lightpoints->add( lightpt ); lightnormals->add( rway_normal ); lightdir->add( rway_dir ); ltype[ltcount]= light_type; ltcount++; } if (in1.eof()) break; } } //while #if 0 if ( lightpoints->getNum() ) { ssgBranch *lightpoints_branch; long int dummy = -999; dummy_tile = new FGTileEntry((SGBucket)dummy); dummy_tile->lightmaps_sequence = new ssgSelector; dummy_tile->ols_transform = new ssgTransform; // call function to generate the runway lights lightpoints_branch = dummy_tile->gen_runway_lights( lightpoints, lightnormals, lightdir, ltype); lightpoints_brightness->addKid(lightpoints_branch); lightpoints_transform->addKid(lightpoints_brightness); //dummy_tile->lightmaps_sequence->setTraversalMaskBits( SSGTRAV_HOT ); lightpoints_transform->addKid( dummy_tile->lightmaps_sequence ); lightpoints_transform->ref(); globals->get_scenery()->get_gnd_lights_root()->addKid( lightpoints_transform ); } #endif } //if in1 } //if objc // end hack for deck lights objc++; if (in.eof()) break; } } // while SG_LOG ( SG_TERRAIN, SG_ALERT, "Finished object processing." ); globals->get_scenery()->get_terrain_branch()->addKid( ship_sel ); //add selector node to root node } return; } void fgUpdateDCS (void) { // double eye_lat,eye_lon,eye_alt; // static double obj_head; double sl_radius,obj_latgc; // float nresultmat[4][4]; // sgMat4 Trans,rothead,rotlon,rot180,rotlat,resultmat1,resultmat2,resultmat3; double bz[3]; // Instantaneous Geodetic Lat/Lon/Alt of moving object FGADA *fdm = (FGADA *)current_aircraft.fdm_state; // Deck should be the first object in objects.txt in case of fdm=ada if (!strcmp(fgGetString("/sim/flight-model"), "ada")) { if ((fdm->get_iaux(1))==1) { obj_lat[1] = fdm->get_daux(1)*SGD_DEGREES_TO_RADIANS; obj_lon[1] = fdm->get_daux(2)*SGD_DEGREES_TO_RADIANS; obj_alt[1] = fdm->get_daux(3); obj_pitch[1] = fdm->get_faux(1); obj_roll[1] = fdm->get_faux(2); } } 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(); //Geodetic to Geocentric angles for rotation sgGeodToGeoc(obj_lat[m],obj_alt[m],&sl_radius,&obj_latgc); //moving object gbs-posn in cartesian coords Point3D obj_posn = Point3D( obj_lon[m],obj_lat[m],obj_alt[m]); Point3D obj_pos = sgGeodToCart( obj_posn ); // Translate moving object w.r.t eye Point3D Objtrans = obj_pos - globals->get_scenery()->get_center(); bz[0]=Objtrans.x(); bz[1]=Objtrans.y(); bz[2]=Objtrans.z(); // rotate dynamic objects for lat,lon & alt and other motion about its axes sgMat4 sgTRANS; sgMakeTransMat4( sgTRANS, bz[0],bz[1],bz[2]); sgVec3 ship_fwd,ship_rt,ship_up; sgSetVec3( ship_fwd, 1.0, 0.0, 0.0);//east,roll sgSetVec3( ship_rt, 0.0, 1.0, 0.0);//up,pitch sgSetVec3( ship_up, 0.0, 0.0, 1.0); //north,yaw sgMat4 sgROT_lon, sgROT_lat, sgROT_hdg, sgROT_pitch, sgROT_roll; sgMakeRotMat4( sgROT_lon, obj_lon[m]*SGD_RADIANS_TO_DEGREES, ship_up ); sgMakeRotMat4( sgROT_lat, 90-obj_latgc*SGD_RADIANS_TO_DEGREES, ship_rt ); sgMakeRotMat4( sgROT_hdg, 180.0, ship_up ); sgMakeRotMat4( sgROT_pitch, obj_pitch[m], ship_rt ); sgMakeRotMat4( sgROT_roll, obj_roll[m], ship_fwd ); sgMat4 sgTUX; sgCopyMat4( sgTUX, sgROT_hdg ); sgPostMultMat4( sgTUX, sgROT_pitch ); sgPostMultMat4( sgTUX, sgROT_roll ); sgPostMultMat4( sgTUX, sgROT_lat ); sgPostMultMat4( sgTUX, sgROT_lon ); sgPostMultMat4( sgTUX, sgTRANS ); sgCoord shippos; sgSetCoord(&shippos, sgTUX ); ship_pos[m]->setTransform( &shippos ); // temporary hack for deck lights - ultimately should move to PLib (when ??) if (m == 1) { if (lightpoints_transform) { lightpoints_transform->setTransform( &shippos ); float sun_angle = cur_light_params.sun_angle * SGD_RADIANS_TO_DEGREES; if ( sun_angle > 89 ) { lightpoints_brightness->select(0x01); } else { lightpoints_brightness->select(0x00); } } float elev; sgVec3 rp,to; float *vp; float alt; float ref_elev; sgXformPnt3( rp, rway_ols, sgTUX ); vp = globals->get_current_view()->get_view_pos(); to[0] = rp[0]-vp[0]; to[1] = rp[1]-vp[1]; to[2] = rp[2]-vp[2]; float dist = sgLengthVec3( to ); alt = (current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER)-rway_ols[2]; elev = asin(alt/dist)*SGD_RADIANS_TO_DEGREES; ref_elev = elev - 3.75; // +ve above, -ve below unsigned int sel; sel = 0xFF; // DO NOT DELETE THIS CODE - This is to compare a discrete FLOLS (without LOD) with analog FLOLS // if (ref_elev > 0.51) sel = 0x21; // if ((ref_elev <= 0.51) & (ref_elev > 0.17)) sel = 0x22; // if ((ref_elev <= 0.17) & (ref_elev >= -0.17)) sel = 0x24; // if ((ref_elev < -0.17) & (ref_elev >= -0.51)) sel = 0x28; // if (ref_elev < -0.51) sel = 0x30; // DO NOT DELETE THIS CODE - This is to compare a discrete FLOLS (without LOD) with analog FLOLS // dummy_tile->lightmaps_sequence->select(sel); sgVec3 up; sgCopyVec3 (up, ship_up); if (dist > 750) sgScaleVec3 (up, 4.0*ref_elev*dist/750.0); else sgScaleVec3 (up, 4.0*ref_elev); // dummy_tile->ols_transform->setTransform(up); //cout << "ref_elev " << ref_elev << endl; } // end hack for deck lights } if ( ship_sel != NULL ) { ship_sel->select(0xFFFFFFFE); // first object is ownship, added to acmodel } } // $$$ end - added VS Renganathan, 15 Oct 2K // added Venky , 12 Nov 2K