(svn r20368) -Codechange: automatically rotate all nodes for airport movement if the airport is rotated

src/aircraft_cmd.cpp

@@ -855,8 +855,17 @@ static bool AircraftController(Aircraft *v)
 	const Station *st = Station::GetIfValid(v->targetairport);
 	/* INVALID_TILE if there is no station */
 	TileIndex tile = INVALID_TILE;
+	Direction rotation = DIR_N;
+	uint size_x = 1, size_y = 1;
 	if (st != NULL) {
-		tile = (st->airport.tile != INVALID_TILE) ? st->airport.tile : st->xy;
+		if (st->airport.tile != INVALID_TILE) {
+			tile = st->airport.tile;
+			rotation = st->airport.rotation;
+			size_x = st->airport.w;
+			size_y = st->airport.h;
+		} else {
+			tile = st->xy;
+		}
 	}
 	/* DUMMY if there is no station or no airport */
 	const AirportFTAClass *afc = tile == INVALID_TILE ? GetAirport(AT_DUMMY) : st->airport.GetFTA();
@@ -878,7 +887,7 @@ static bool AircraftController(Aircraft *v)
 	}
 
 	/*  get airport moving data */
-	const AirportMovingData amd = *afc->MovingData(v->pos);
+	const AirportMovingData amd = RotateAirportMovingData(afc->MovingData(v->pos), rotation, size_x, size_y);
 
 	int x = TileX(tile) * TILE_SIZE;
 	int y = TileY(tile) * TILE_SIZE;

src/airport.cpp

@@ -151,6 +151,42 @@ static byte AirportTestFTA(uint nofelements, const AirportFTA *layout, const byt
 static void AirportPrintOut(uint nofelements, const AirportFTA *layout, bool full_report);
 #endif
 
+/**
+ * Rotate the airport moving data to another rotation.
+ * @param orig Pointer to the moving data to rotate.
+ * @param rotation How to rotate the moving data.
+ * @return The rotated moving data.
+ */
+AirportMovingData RotateAirportMovingData(const AirportMovingData *orig, Direction rotation, uint num_tiles_x, uint num_tiles_y)
+{
+	AirportMovingData amd;
+	amd.flag = orig->flag;
+	amd.direction = ChangeDir(orig->direction, (DirDiff)rotation);
+	switch (rotation) {
+		case DIR_N:
+			amd.x = orig->x;
+			amd.y = orig->y;
+			break;
+
+		case DIR_E:
+			amd.x = orig->y;
+			amd.y = num_tiles_y * TILE_SIZE - orig->x - 1;
+			break;
+
+		case DIR_S:
+			amd.x = num_tiles_x * TILE_SIZE - orig->x - 1;
+			amd.y = num_tiles_y * TILE_SIZE - orig->y - 1;
+			break;
+
+		case DIR_W:
+			amd.x = num_tiles_x * TILE_SIZE - orig->y - 1;
+			amd.y = orig->x;
+			break;
+
+		default: NOT_REACHED();
+	}
+	return amd;
+}
 
 AirportFTAClass::AirportFTAClass(
 	const AirportMovingData *moving_data_,

src/airport.h

@@ -136,6 +136,8 @@ struct AirportMovingData {
 	DirectionByte direction; ///< Direction to turn the aircraft after reaching this position.
 };
 
+AirportMovingData RotateAirportMovingData(const AirportMovingData *orig, Direction rotation, uint num_tiles_x, uint num_tiles_y);
+
 struct AirportFTAbuildup;
 
 /** Finite sTate mAchine --> FTA */