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flightgear/src/GUI/apt_dlg.cxx
curt 36de63366b I just nailed an especially annoying tile cache scheduling bug.
What was happening was that we screwed up and scheduled tiles for
(lon,lon) rather than (lon,lat) ... note the typo.  This generated
bogus tile id's which the system happily accepted, put into the tile
cache system, and attempted to load.  The problem was that these bogus
tile id's were negative where as all valid tile id's should be >= 0.

These negative tile id's up the logic used to remove tiles from the
cache.  When identifying tiles for removal, we look for the furthest
tile away from us by starting out the furthest id at -1 and if we find
something further, we update the furthest tile id.  Then at the end we
check if the furthest tile id >= 0 to see if we found anything we
could remove.  However, the furthest tile id was these bogus tiles
with negative tile id's so the system always assumed there was nothing
appropriate for removal.  This made it impossible to ever remove a
tile from the cache meaning it quickly filled up and no more tiles
could be loaded.

I fixed the one instance of scheduling tiles for a bogus location, and
added a sanity check so if it ever happens again we'll bomb with an
appropriate error message.
2001-11-12 22:05:47 +00:00

170 lines
5.3 KiB
C++

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <simgear/compiler.h>
#ifdef HAVE_WINDOWS_H
# include <windows.h>
#endif
#include <stdlib.h>
#include <simgear/constants.h>
#include <simgear/debug/logstream.hxx>
#include <simgear/misc/sg_path.hxx>
#include <Include/general.hxx>
#include <GL/glut.h>
#include <GL/gl.h>
#include <Airports/simple.hxx>
#include <FDM/flight.hxx>
#include <Main/fg_init.hxx>
#include <Main/fg_props.hxx>
#include <Main/globals.hxx>
#include <Scenery/tilemgr.hxx>
#include "gui.h"
#include "gui_local.hxx"
/// The beginnings of teleportation :-)
// Needs cleaning up but works
// These statics should disapear when this is a class
static puDialogBox *AptDialog = 0;
static puFrame *AptDialogFrame = 0;
static puText *AptDialogMessage = 0;
static puInput *AptDialogInput = 0;
static char NewAirportId[16];
static char NewAirportLabel[] = "Enter New Airport ID";
static puOneShot *AptDialogOkButton = 0;
static puOneShot *AptDialogCancelButton = 0;
static puOneShot *AptDialogResetButton = 0;
void AptDialog_Cancel(puObject *)
{
FG_POP_PUI_DIALOG( AptDialog );
}
void AptDialog_OK (puObject *)
{
static const SGPropertyNode *longitude
= fgGetNode("/position/longitude-deg");
static const SGPropertyNode *latitude
= fgGetNode("/position/latitude-deg");
SGPath path( globals->get_fg_root() );
path.append( "Airports" );
path.append( "simple.mk4" );
FGAirports airports( path.c_str() );
FGAirport a;
int freeze = globals->get_freeze();
if(!freeze)
globals->set_freeze( true );
char *s;
AptDialogInput->getValue(&s);
string AptId(s);
cout << "AptDialog_OK " << AptId << " " << AptId.length() << endl;
AptDialog_Cancel( NULL );
if ( AptId.length() ) {
// set initial position from airport id
SG_LOG( SG_GENERAL, SG_INFO,
"Attempting to set starting position from airport code "
<< AptId );
if ( airports.search( AptId, &a ) )
{
// unbind the current fdm state so property changes
// don't get lost when we subsequently delete this fdm
// and create a new one.
cur_fdm_state->unbind();
AptId = a.id.c_str(); /// NHV fix wrong case crash
fgSetString("/sim/startup/airport-id", AptId.c_str() );
// fgSetDouble("/position/altitude-ft", -9999.0 );
// fgSetPosFromAirportID( AptId );
fgSetPosFromAirportIDandHdg( AptId,
cur_fdm_state->get_Psi() *
SGD_RADIANS_TO_DEGREES);
BusyCursor(0);
fgReInitSubsystems();
// if ( global_tile_mgr.init() ) {
// Load the local scenery data
global_tile_mgr.update( longitude->getDoubleValue(),
latitude->getDoubleValue() );
// } else {
// SG_LOG( SG_GENERAL, SG_ALERT,
// "Error in Tile Manager initialization!" );
// exit(-1);
// }
BusyCursor(1);
} else {
AptId += " not in database.";
mkDialog(AptId.c_str());
}
}
if ( !freeze ) {
globals->set_freeze( false );
}
}
void AptDialog_Reset(puObject *)
{
// strncpy( NewAirportId, fgGetString("/sim/startup/airport-id").c_str(), 16 );
sprintf( NewAirportId, "%s", fgGetString("/sim/startup/airport-id").c_str() );
AptDialogInput->setValue ( NewAirportId );
AptDialogInput->setCursor( 0 ) ;
}
void NewAirport(puObject *cb)
{
// strncpy( NewAirportId, fgGetString("/sim/startup/airport-id").c_str(), 16 );
sprintf( NewAirportId, "%s", fgGetString("/sim/startup/airport-id").c_str() );
// cout << "NewAirport " << NewAirportId << endl;
AptDialogInput->setValue( NewAirportId );
FG_PUSH_PUI_DIALOG( AptDialog );
}
void NewAirportInit(void)
{
sprintf( NewAirportId, "%s", fgGetString("/sim/startup/airport-id").c_str() );
int len = 150
- puGetDefaultLabelFont().getStringWidth( NewAirportLabel ) / 2;
AptDialog = new puDialogBox (150, 50);
{
AptDialogFrame = new puFrame (0,0,350, 150);
AptDialogMessage = new puText (len, 110);
AptDialogMessage -> setLabel (NewAirportLabel);
AptDialogInput = new puInput (50, 70, 300, 100);
AptDialogInput -> setValue (NewAirportId);
AptDialogInput -> acceptInput();
AptDialogOkButton = new puOneShot (50, 10, 110, 50);
AptDialogOkButton -> setLegend (gui_msg_OK);
AptDialogOkButton -> setCallback (AptDialog_OK);
AptDialogOkButton -> makeReturnDefault(TRUE);
AptDialogCancelButton = new puOneShot (140, 10, 210, 50);
AptDialogCancelButton -> setLegend (gui_msg_CANCEL);
AptDialogCancelButton -> setCallback (AptDialog_Cancel);
AptDialogResetButton = new puOneShot (240, 10, 300, 50);
AptDialogResetButton -> setLegend (gui_msg_RESET);
AptDialogResetButton -> setCallback (AptDialog_Reset);
}
cout << "NewAirportInit " << NewAirportId << endl;
FG_FINALIZE_PUI_DIALOG( AptDialog );
}