#include <Main/fg_props.hxx>
#include <Main/util.hxx>
#include <Scenery/scenery.hxx>
-#include <Navaids/navrecord.hxx>
+#include <Navaids/navlist.hxx>
#include <Navaids/procedure.hxx>
+#include <Radio/radio.hxx>
+
#include "NasalSys.hxx"
static FGNasalSys* nasalSys = 0;
+// Listener class for loading Nasal modules on demand
+class FGNasalModuleListener : public SGPropertyChangeListener
+{
+public:
+ FGNasalModuleListener(SGPropertyNode* node);
+
+ virtual void valueChanged(SGPropertyNode* node);
+
+private:
+ SGPropertyNode_ptr _node;
+};
+
+FGNasalModuleListener::FGNasalModuleListener(SGPropertyNode* node) : _node(node)
+{
+}
+
+void FGNasalModuleListener::valueChanged(SGPropertyNode*)
+{
+ if (_node->getBoolValue("enabled",false)&&
+ !_node->getBoolValue("loaded",true))
+ {
+ nasalSys->loadPropertyScripts(_node);
+ }
+}
+
// Read and return file contents in a single buffer. Note use of
// stat() to get the file size. This is a win32 function, believe it
// Converts from 100ns units in 1601 epoch to unix epoch in sec
return naNum((t * 1e-7) - 11644473600.0);
#else
- time_t t;
struct timeval td;
- do { t = time(0); gettimeofday(&td, 0); } while(t != time(0));
- return naNum(t + 1e-6 * td.tv_usec);
+ gettimeofday(&td, 0);
+ return naNum(td.tv_sec + 1e-6 * td.tv_usec);
#endif
}
#undef HASHSET
}
+// Expose a radio transmission interface to Nasal.
+static naRef f_radioTransmission(naContext c, naRef me, int argc, naRef* args)
+{
+ double lat, lon, elev, heading, pitch;
+ if(argc != 5) naRuntimeError(c, "radioTransmission() expects 5 arguments");
+ for(int i=0; i<argc; i++) {
+ if(naIsNil(args[i]))
+ return naNil();
+ }
+ lat = naNumValue(args[0]).num;
+ lon = naNumValue(args[1]).num;
+ elev = naNumValue(args[2]).num;
+ heading = naNumValue(args[3]).num;
+ pitch = naNumValue(args[4]).num;
+ SGGeod geod = SGGeod::fromDegM(lon, lat, elev * SG_FEET_TO_METER);
+ FGRadioTransmission *radio = new FGRadioTransmission;
+ double signal = radio->receiveBeacon(geod, heading, pitch);
+ delete radio;
+ return naNum(signal);
+}
+
class AirportInfoFilter : public FGAirport::AirportFilter
{
}
+// Returns vector of data hash for navaid of a <type>, nil on error
+// navaids sorted by ascending distance
+// navinfo([<lat>,<lon>],[<type>],[<id>])
+// lat/lon (numeric): use latitude/longitude instead of ac position
+// type: ("fix"|"vor"|"ndb"|"ils"|"dme"|"tacan"|"any")
+// id: (partial) id of the fix
+// examples:
+// navinfo("vor") returns all vors
+// navinfo("HAM") return all navaids who's name start with "HAM"
+// navinfo("vor", "HAM") return all vor who's name start with "HAM"
+//navinfo(34,48,"vor","HAM") return all vor who's name start with "HAM"
+// sorted by distance relative to lat=34, lon=48
+static naRef f_navinfo(naContext c, naRef me, int argc, naRef* args)
+{
+ static SGConstPropertyNode_ptr latn = fgGetNode("/position/latitude-deg", true);
+ static SGConstPropertyNode_ptr lonn = fgGetNode("/position/longitude-deg", true);
+ SGGeod pos;
+
+ if(argc >= 2 && naIsNum(args[0]) && naIsNum(args[1])) {
+ pos = SGGeod::fromDeg(args[1].num, args[0].num);
+ args += 2;
+ argc -= 2;
+ } else {
+ pos = SGGeod::fromDeg(lonn->getDoubleValue(), latn->getDoubleValue());
+ }
+
+ FGPositioned::Type type = FGPositioned::INVALID;
+ nav_list_type navlist;
+ const char * id = "";
+
+ if(argc > 0 && naIsString(args[0])) {
+ const char *s = naStr_data(args[0]);
+ if(!strcmp(s, "any")) type = FGPositioned::INVALID;
+ else if(!strcmp(s, "fix")) type = FGPositioned::FIX;
+ else if(!strcmp(s, "vor")) type = FGPositioned::VOR;
+ else if(!strcmp(s, "ndb")) type = FGPositioned::NDB;
+ else if(!strcmp(s, "ils")) type = FGPositioned::ILS;
+ else if(!strcmp(s, "dme")) type = FGPositioned::DME;
+ else if(!strcmp(s, "tacan")) type = FGPositioned::TACAN;
+ else id = s; // this is an id
+ ++args;
+ --argc;
+ }
+
+ if(argc > 0 && naIsString(args[0])) {
+ if( *id != 0 ) {
+ naRuntimeError(c, "navinfo() called with navaid id");
+ return naNil();
+ }
+ id = naStr_data(args[0]);
+ ++args;
+ --argc;
+ }
+
+ if( argc > 0 ) {
+ naRuntimeError(c, "navinfo() called with too many arguments");
+ return naNil();
+ }
+
+ navlist = globals->get_navlist()->findByIdentAndFreq( pos, id, 0.0, type );
+
+ naRef reply = naNewVector(c);
+ for( nav_list_type::const_iterator it = navlist.begin(); it != navlist.end(); ++it ) {
+ const FGNavRecord * nav = *it;
+
+ // set navdata hash
+ naRef navdata = naNewHash(c);
+#define HASHSET(s,l,n) naHash_set(navdata, naStr_fromdata(naNewString(c),s,l),n)
+ HASHSET("id", 2, naStr_fromdata(naNewString(c),
+ const_cast<char *>(nav->ident().c_str()), nav->ident().length()));
+ HASHSET("name", 4, naStr_fromdata(naNewString(c),
+ const_cast<char *>(nav->name().c_str()), nav->name().length()));
+ HASHSET("frequency", 9, naNum(nav->get_freq()));
+ HASHSET("lat", 3, naNum(nav->get_lat()));
+ HASHSET("lon", 3, naNum(nav->get_lon()));
+ HASHSET("elevation", 9, naNum(nav->get_elev_ft() * SG_FEET_TO_METER));
+ HASHSET("type", 4, naStr_fromdata(naNewString(c),
+ const_cast<char *>(nav->nameForType(nav->type())), strlen(nav->nameForType(nav->type()))));
+ HASHSET("distance", 8, naNum(SGGeodesy::distanceNm( pos, nav->geod() ) * SG_NM_TO_METER ) );
+ HASHSET("bearing", 7, naNum(SGGeodesy::courseDeg( pos, nav->geod() ) ) );
+#undef HASHSET
+ naVec_append( reply, navdata );
+ }
+ return reply;
+}
+
// Table of extension functions. Terminate with zeros.
static struct { const char* name; naCFunction func; } funcs[] = {
{ "getprop", f_getprop },
{ "geodtocart", f_geodtocart },
{ "geodinfo", f_geodinfo },
{ "airportinfo", f_airportinfo },
+ { "navinfo", f_navinfo },
+ { "radioTransmission", f_radioTransmission },
{ 0, 0 }
};
_context = naNewContext();
}
+bool pathSortPredicate(const SGPath& p1, const SGPath& p2)
+{
+ return p1.file() < p2.file();
+}
+
// Loads all scripts in given directory
void FGNasalSys::loadScriptDirectory(simgear::Dir nasalDir)
{
simgear::PathList scripts = nasalDir.children(simgear::Dir::TYPE_FILE, ".nas");
+ // sort scripts, avoid loading sequence effects due to file system's
+ // random directory order
+ std::sort(scripts.begin(), scripts.end(), pathSortPredicate);
+
for (unsigned int i=0; i<scripts.size(); ++i) {
SGPath fullpath(scripts[i]);
SGPath file = fullpath.file();
SGPropertyNode* nasal = globals->get_props()->getNode("nasal");
if(!nasal) return;
- for(int i=0; i<nasal->nChildren(); i++) {
+ for(int i=0; i<nasal->nChildren(); i++)
+ {
SGPropertyNode* n = nasal->getChild(i);
- bool is_loaded = false;
+ loadPropertyScripts(n);
+ }
+}
- const char* module = n->getName();
- if(n->hasChild("module"))
- module = n->getStringValue("module");
- if (n->getBoolValue("enabled",true))
- {
- // allow multiple files to be specified within a single
- // Nasal module tag
- int j = 0;
- SGPropertyNode *fn;
- bool file_specified = false;
- while((fn = n->getChild("file", j)) != NULL) {
- file_specified = true;
- const char* file = fn->getStringValue();
- SGPath p(file);
- if (!p.isAbsolute() || !p.exists())
+// Loads the scripts found under /nasal in the global tree
+void FGNasalSys::loadPropertyScripts(SGPropertyNode* n)
+{
+ bool is_loaded = false;
+
+ const char* module = n->getName();
+ if(n->hasChild("module"))
+ module = n->getStringValue("module");
+ if (n->getBoolValue("enabled",true))
+ {
+ // allow multiple files to be specified within a single
+ // Nasal module tag
+ int j = 0;
+ SGPropertyNode *fn;
+ bool file_specified = false;
+ bool ok=true;
+ while((fn = n->getChild("file", j)) != NULL) {
+ file_specified = true;
+ const char* file = fn->getStringValue();
+ SGPath p(file);
+ if (!p.isAbsolute() || !p.exists())
+ {
+ p = globals->resolve_maybe_aircraft_path(file);
+ if (p.isNull())
{
- p = globals->resolve_maybe_aircraft_path(file);
+ SG_LOG(SG_NASAL, SG_ALERT, "Cannot find Nasal script '" <<
+ file << "' for module '" << module << "'.");
}
- loadModule(p, module);
- j++;
- }
-
- const char* src = n->getStringValue("script");
- if(!n->hasChild("script")) src = 0; // Hrm...
- if(src)
- createModule(module, n->getPath().c_str(), src, strlen(src));
-
- if(!file_specified && !src)
- {
- // module no longer exists - clear the archived "enable" flag
- n->setAttribute(SGPropertyNode::USERARCHIVE,false);
- SGPropertyNode* node = n->getChild("enabled",0,false);
- if (node)
- node->setAttribute(SGPropertyNode::USERARCHIVE,false);
-
- SG_LOG(SG_NASAL, SG_ALERT, "Nasal error: " <<
- "no <file> or <script> defined in " <<
- "/nasal/" << module);
}
- else
- is_loaded = true;
+ ok &= p.isNull() ? false : loadModule(p, module);
+ j++;
+ }
+
+ const char* src = n->getStringValue("script");
+ if(!n->hasChild("script")) src = 0; // Hrm...
+ if(src)
+ createModule(module, n->getPath().c_str(), src, strlen(src));
+
+ if(!file_specified && !src)
+ {
+ // module no longer exists - clear the archived "enable" flag
+ n->setAttribute(SGPropertyNode::USERARCHIVE,false);
+ SGPropertyNode* node = n->getChild("enabled",0,false);
+ if (node)
+ node->setAttribute(SGPropertyNode::USERARCHIVE,false);
+
+ SG_LOG(SG_NASAL, SG_ALERT, "Nasal error: " <<
+ "no <file> or <script> defined in " <<
+ "/nasal/" << module);
}
- n->setBoolValue("loaded",is_loaded);
+ else
+ is_loaded = ok;
}
+ else
+ {
+ SGPropertyNode* enable = n->getChild("enabled");
+ if (enable)
+ {
+ FGNasalModuleListener* listener = new FGNasalModuleListener(n);
+ enable->addChangeListener(listener, false);
+ }
+ }
+ SGPropertyNode* loaded = n->getChild("loaded",0,true);
+ loaded->setAttribute(SGPropertyNode::PRESERVE,true);
+ loaded->setBoolValue(is_loaded);
}
// Logs a runtime error, with stack trace, to the FlightGear log stream
// Reads a script file, executes it, and places the resulting
// namespace into the global namespace under the specified module
// name.
-void FGNasalSys::loadModule(SGPath file, const char* module)
+bool FGNasalSys::loadModule(SGPath file, const char* module)
{
int len = 0;
char* buf = readfile(file.c_str(), &len);
SG_LOG(SG_NASAL, SG_ALERT,
"Nasal error: could not read script file " << file.c_str()
<< " into module " << module);
- return;
+ return false;
}
- createModule(module, file.c_str(), buf, len);
+ bool ok = createModule(module, file.c_str(), buf, len);
delete[] buf;
+ return ok;
}
// Parse and run. Save the local variables namespace, as it will
// become a sub-object of globals. The optional "arg" argument can be
// used to pass an associated property node to the module, which can then
// be accessed via cmdarg(). (This is, for example, used by XML dialogs.)
-void FGNasalSys::createModule(const char* moduleName, const char* fileName,
+bool FGNasalSys::createModule(const char* moduleName, const char* fileName,
const char* src, int len,
const SGPropertyNode* cmdarg,
int argc, naRef* args)
{
naRef code = parse(fileName, src, len);
if(naIsNil(code))
- return;
+ return false;
// See if we already have a module hash to use. This allows the
// user to, for example, add functions to the built-in math
call(code, argc, args, locals);
hashset(_globals, moduleName, locals);
+ return true;
}
void FGNasalSys::deleteModule(const char* moduleName)
FGNasalListener *nl = new FGNasalListener(node, code, this,
gcSave(code), _listenerId, init, type);
- node->addChangeListener(nl, init);
+ node->addChangeListener(nl, init != 0);
_listener[_listenerId] = nl;
return naNum(_listenerId++);
projects / flightgear.git / blobdiff