Codechange: Use TileAddBy(Diag)Dir when possible.

src/map.cpp

@@ -269,7 +269,7 @@ bool CircularTileSearch(TileIndex *tile, uint size, TestTileOnSearchProc proc, v
 
 		/* If tile test is not successful, get one tile up,
 		 * ready for a test in first circle around center tile */
-		*tile = TILE_ADD(*tile, TileOffsByDir(DIR_N));
+		*tile = TileAddByDir(*tile, DIR_N);
 		return CircularTileSearch(tile, size / 2, 1, 1, proc, user_data);
 	} else {
 		return CircularTileSearch(tile, size / 2, 0, 0, proc, user_data);

src/pathfinder/follow_track.hpp

@@ -219,8 +219,7 @@ protected:
 		}
 
 		/* normal or station tile, do one step */
-		TileIndexDiff diff = TileOffsByDiagDir(m_exitdir);
+		m_new_tile = TileAddByDiagDir(m_old_tile, m_exitdir);
-		m_new_tile = TILE_ADD(m_old_tile, diff);
 
 		/* special handling for stations */
 		if (IsRailTT() && HasStationTileRail(m_new_tile)) {

src/pathfinder/yapf/yapf_ship.cpp

@@ -69,7 +69,7 @@ public:
 		}
 
 		/* move back to the old tile/trackdir (where ship is coming from) */
-		TileIndex src_tile = TILE_ADD(tile, TileOffsByDiagDir(ReverseDiagDir(enterdir)));
+		TileIndex src_tile = TileAddByDiagDir(tile, ReverseDiagDir(enterdir));
 		Trackdir trackdir = v->GetVehicleTrackdir();
 		assert(IsValidTrackdir(trackdir));
 

src/roadveh_cmd.cpp

@@ -1449,7 +1449,7 @@ again:
 			/* Vehicle has arrived at a bay in a road stop */
 
 			if (IsDriveThroughStopTile(v->tile)) {
-				TileIndex next_tile = TILE_ADD(v->tile, TileOffsByDir(v->direction));
+				TileIndex next_tile = TileAddByDir(v->tile, v->direction);
 
 				/* Check if next inline bay is free and has compatible road. */
 				if (RoadStop::IsDriveThroughRoadStopContinuation(v->tile, next_tile) && (GetRoadTypes(next_tile) & v->compatible_roadtypes) != 0) {

src/station_gui.cpp

@@ -2208,7 +2208,7 @@ static const T *FindStationsNearby(TileArea ta, bool distant_join)
 	if (distant_join && min(ta.w, ta.h) >= _settings_game.station.station_spread) return NULL;
 	uint max_dist = distant_join ? _settings_game.station.station_spread - min(ta.w, ta.h) : 1;
 
-	TileIndex tile = TILE_ADD(ctx.tile, TileOffsByDir(DIR_N));
+	TileIndex tile = TileAddByDir(ctx.tile, DIR_N);
 	CircularTileSearch(&tile, max_dist, ta.w, ta.h, AddNearbyStation<T>, &ctx);
 
 	return NULL;

src/water_cmd.cpp

@@ -1218,7 +1218,7 @@ void ConvertGroundTilesIntoWaterTiles()
 				default:
 					uint dir;
 					FOR_EACH_SET_BIT(dir, _flood_from_dirs[slope & ~SLOPE_STEEP]) {
-						TileIndex dest = TILE_ADD(tile, TileOffsByDir((Direction)dir));
+						TileIndex dest = TileAddByDir(tile, (Direction)dir);
 						Slope slope_dest = GetTileSlope(dest) & ~SLOPE_STEEP;
 						if (slope_dest == SLOPE_FLAT || IsSlopeWithOneCornerRaised(slope_dest)) {
 							MakeShore(tile);