(svn r15039) -Codechange: fix comments regarding old AI, remove one old AI hack

src/command.cpp

@@ -448,10 +448,6 @@ error:
 	/* if toplevel, subtract the money. */
 	if (--_docommand_recursive == 0 && !(flags & DC_BANKRUPT)) {
 		SubtractMoneyFromCompany(res);
-		/* XXX - Old AI hack which doesn't use DoCommandP; update last build coord of company */
-		if (tile != 0 && IsValidCompanyID(_current_company)) {
-			GetCompany(_current_company)->last_build_coordinate = tile;
-		}
 	}
 
 	return res;

src/command_type.h

@@ -301,10 +301,9 @@ enum {
 	DC_QUERY_COST      = 0x004, ///< query cost only,  don't build.
 	DC_NO_WATER        = 0x008, ///< don't allow building on water
 	DC_NO_RAIL_OVERLAP = 0x010, ///< don't allow overlap of rails (used in buildrail)
-	DC_AI_BUILDING     = 0x020, ///< special building rules for AI
-	DC_NO_TOWN_RATING  = 0x040, ///< town rating does not disallow you from building
-	DC_BANKRUPT        = 0x080, ///< company bankrupts, skip money check, skip vehicle on tile check in some cases
-	DC_AUTOREPLACE     = 0x100, ///< autoreplace/autorenew is in progress, this shall disable vehicle limits when building, and ignore certain restrictions when undoing things (like vehicle attach callback)
+	DC_NO_TOWN_RATING  = 0x020, ///< town rating does not disallow you from building
+	DC_BANKRUPT        = 0x040, ///< company bankrupts, skip money check, skip vehicle on tile check in some cases
+	DC_AUTOREPLACE     = 0x080, ///< autoreplace/autorenew is in progress, this shall disable vehicle limits when building, and ignore certain restrictions when undoing things (like vehicle attach callback)
 };
 
 /**

src/rail_cmd.cpp

@@ -783,10 +783,9 @@ CommandCost CmdBuildTrainDepot(TileIndex tile, uint32 flags, uint32 p1, uint32 p
 
 	/* Prohibit construction if
 	 * The tile is non-flat AND
-	 * 1) The AI is "old-school"
-	 * 2) build-on-slopes is disabled
-	 * 3) the tile is steep i.e. spans two height levels
-	 * 4) the exit points in the wrong direction
+	 * 1) build-on-slopes is disabled
+	 * 2) the tile is steep i.e. spans two height levels
+	 * 3) the exit points in the wrong direction
 	 */
 
 	if (tileh != SLOPE_FLAT && (

src/road_cmd.cpp

@@ -923,8 +923,7 @@ static CommandCost ClearTile_Road(TileIndex tile, byte flags)
 		case ROAD_TILE_NORMAL: {
 			RoadBits b = GetAllRoadBits(tile);
 
-			/* Clear the road if only one piece is on the tile OR the AI tries
-			 * to clear town road OR we are not using the DC_AUTO flag */
+			/* Clear the road if only one piece is on the tile OR we are not using the DC_AUTO flag */
 			if ((CountBits(b) == 1 && GetRoadBits(tile, ROADTYPE_TRAM) == ROAD_NONE) || !(flags & DC_AUTO)) {
 				RoadTypes rts = GetRoadTypes(tile);
 				CommandCost ret(EXPENSES_CONSTRUCTION);

src/station_cmd.cpp

@@ -739,11 +739,7 @@ CommandCost CheckFlatLandBelow(TileIndex tile, uint w, uint h, uint flags, uint
 
 		/* Prohibit building if
 		 *   1) The tile is "steep" (i.e. stretches two height levels)
-		 * -OR-
-		 *   2) The tile is non-flat if
-		 *     a) the company building is an "old-school" AI
-		 *   -OR-
-		 *     b) the build_on_slopes switch is disabled
+		 *   2) The tile is non-flat and the build_on_slopes switch is disabled
 		 */
 		if (IsSteepSlope(tileh) ||
 				((!_settings_game.construction.build_on_slopes) && tileh != SLOPE_FLAT)) {