(svn r16814) -Codechange: make IsNormalAircraft() member of Aircraft

src/saveload/afterload.cpp

@@ -1760,7 +1760,7 @@ bool AfterLoadGame()
 		Aircraft *a;
 		FOR_ALL_AIRCRAFT(a) {
 			/* Set engine_type of shadow and rotor */
-			if (!IsNormalAircraft(a)) {
+			if (!a->IsNormalAircraft()) {
 				a->engine_type = a->First()->engine_type;
 			}
 		}

src/saveload/vehicle_sl.cpp

@@ -164,7 +164,7 @@ void UpdateOldAircraft()
 	FOR_ALL_AIRCRAFT(a) {
 		/* airplane has another vehicle with subtype 4 (shadow), helicopter also has 3 (rotor)
 		 * skip those */
-		if (IsNormalAircraft(a)) {
+		if (a->IsNormalAircraft()) {
 			/* airplane in terminal stopped doesn't hurt anyone, so goto next */
 			if ((a->vehstatus & VS_STOPPED) && a->state == 0) {
 				a->state = HANGAR;
@@ -356,7 +356,7 @@ void AfterLoadVehicles(bool part_of_load)
 				break;
 
 			case VEH_AIRCRAFT:
-				if (IsNormalAircraft(v)) {
+				if (Aircraft::From(v)->IsNormalAircraft()) {
 					v->cur_image = v->GetImage(v->direction);
 
 					/* The plane's shadow will have the same image as the plane */