X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FScripting%2FNasalPositioned.cxx;h=1d2b41402a28a71b02f12e0266a2f66463f20af4;hb=accdf97785593046744cebbcdc467b4e52a86ebd;hp=5b5206eedcdd11544e15f036da0382bcc8582030;hpb=5c42071fbbd73bb7dc4bcf03e028d923017ea6b7;p=flightgear.git

diff --git a/src/Scripting/NasalPositioned.cxx b/src/Scripting/NasalPositioned.cxx
index 5b5206eed..1d2b41402 100644
--- a/src/Scripting/NasalPositioned.cxx
+++ b/src/Scripting/NasalPositioned.cxx
@@ -124,6 +124,17 @@ static naRef stringToNasal(naContext c, const std::string& s)
                    s.length());
 }
 
+static bool convertToNum(naRef v, double& result)
+{
+    naRef n = naNumValue(v);
+    if (naIsNil(n)) {
+        return false; // couldn't convert
+    }
+    
+    result = n.num;
+    return true;
+}
+
 static WayptFlag wayptFlagFromString(const char* s)
 {
   if (!strcmp(s, "sid")) return WPT_DEPARTURE;
@@ -1118,7 +1129,11 @@ static naRef f_airport_comms(naContext c, naRef me, int argc, naRef* args)
     naRef comms = naNewVector(c);
     
 // if we have an explicit type, return a simple vector of frequencies
-    if (argc > 0 && naIsScalar(args[0])) {
+    if (argc > 0 && !naIsString(args[0])) {
+        naRuntimeError(c, "airport.comms argument must be a frequency type name");
+    }
+    
+    if (argc > 0) {
         std::string commName = naStr_data(args[0]);
         FGPositioned::Type commType = FGPositioned::typeFromName(commName);
         
@@ -2182,13 +2197,14 @@ static naRef f_leg_setSpeed(naContext c, naRef me, int argc, naRef* args)
   if (!leg) {
     naRuntimeError(c, "leg.setSpeed called on non-flightplan-leg object");
   }
-  
-  if (argc < 2) {
-    naRuntimeError(c, "bad arguments to leg.setSpeed");
-  }
-  
+
+    double speed = 0.0;
+    if ((argc < 2) || !convertToNum(args[0], speed))
+        naRuntimeError(c, "bad arguments to setSpeed");
+    
   RouteRestriction rr = routeRestrictionFromString(naStr_data(args[1]));
-  leg->setSpeed(rr, args[0].num);
+  leg->setSpeed(rr, speed);
+  
   return naNil();
 }
 
@@ -2199,12 +2215,13 @@ static naRef f_leg_setAltitude(naContext c, naRef me, int argc, naRef* args)
     naRuntimeError(c, "leg.setAltitude called on non-flightplan-leg object");
   }
   
-  if (argc < 2) {
-    naRuntimeError(c, "bad arguments to leg.setAltitude");
-  }
-  
+    double alt = 0.0;
+    if ((argc < 2) || !convertToNum(args[0], alt))
+        naRuntimeError(c, "bad arguments to leg.setAltitude");
+    
   RouteRestriction rr = routeRestrictionFromString(naStr_data(args[1]));
-  leg->setAltitude(rr, args[0].num);
+    leg->setAltitude(rr, alt);
+
   return naNil();
 }