(svn r122) Change: exclusive transport rights are now stored per town instead of per station

Exclusive rights from old savegames will be reset.

saveload.c

@@ -9,7 +9,7 @@
 
 enum {
 	SAVEGAME_MAJOR_VERSION = 4,
-	SAVEGAME_MINOR_VERSION = 0,
+	SAVEGAME_MINOR_VERSION = 1,
 
 	SAVEGAME_LOADABLE_VERSION = (SAVEGAME_MAJOR_VERSION << 8) + SAVEGAME_MINOR_VERSION
 };

station_cmd.c

@@ -302,7 +302,6 @@ static void StationInitialize(Station *st, TileIndex tile)
 	st->delete_ctr = 0;
 	st->facilities = 0;
 
-	st->blocked_months = 0;
 	st->last_vehicle = INVALID_VEHICLE;
 
 	for(i=0,ge=st->goods; i!=NUM_CARGO; i++, ge++) {
@@ -2184,13 +2183,6 @@ void OnTick_Station()
 
 void StationMonthlyLoop()
 {
-	Station *st;
-
-	FOR_ALL_STATIONS(st) {
-		if (st->blocked_months != 0)
-			st->blocked_months--;
-	}
-
 }
 
 
@@ -2272,7 +2264,7 @@ uint MoveGoodsToStation(uint tile, int w, int h, int type, uint amount)
 				if (around[i] == 0xFF) {
 					st = DEREF_STATION(st_index);
 					if ((st->had_vehicle_of_type & HVOT_BUOY) == 0 &&
-							st->blocked_months == 0 &&
+							( !st->town->exclusive_counter || (st->town->exclusivity == st->owner) ) && // check exclusive transport rights
 							st->goods[type].rating != 0 && 
 							(!_patches.selectgoods || st->goods[type].last_speed) && // if last_speed is 0, no vehicle has been there.
 							((st->facilities & (byte)~FACIL_BUS_STOP)!=0 || type==CT_PASSENGERS) && // if we have other fac. than a bus stop, or the cargo is passengers

town.h

@@ -29,6 +29,8 @@ struct Town {
 	// Player ratings as well as a mask that determines which players have a rating.
 	byte have_ratings;
 	uint8 unwanted[MAX_PLAYERS]; // how many months companies aren't wanted by towns (bribe)
+	uint8 exclusivity;	     // which player has exslusivity
+	uint8 exclusive_counter;     // months till the exclusivity expires
 	int16 ratings[MAX_PLAYERS];
 		
 	// Maximum amount of passengers and mail that can be transported.

town_cmd.c

@@ -863,6 +863,8 @@ static void DoCreateTown(Town *t, TileIndex tile)
 		t->ratings[i] = 500;
 
 	t->have_ratings = 0;
+	t->exclusivity = (byte)-1;
+	t->exclusive_counter = 0;
 	t->statues = 0;
 
 	CreateTownName(t);
@@ -1471,13 +1473,8 @@ static void TownActionFundBuildings(Town *t, int action)
 
 static void TownActionBuyRights(Town *t, int action)
 {
-	Station *st;
-
-	FOR_ALL_STATIONS(st) {
-		if (st->xy && st->town == t && st->owner < 8 && 
-				st->owner != _current_player)
-			st->blocked_months = 12;
-	}
+	t->exclusive_counter = 12;
+	t->exclusivity = _current_player;
 
 	ModifyStationRatingAround(t->xy, _current_player, 130, 17);
 }
@@ -1739,6 +1736,10 @@ void TownsMonthlyLoop()
 		if (t->road_build_months != 0)
 			t->road_build_months--;
 
+		if (t->exclusive_counter != 0)
+			if(--t->exclusive_counter==0)
+				t->exclusivity = (byte)-1;
+
 		UpdateTownGrowRate(t);
 		UpdateTownAmounts(t);
 		UpdateTownUnwanted(t);
@@ -1827,8 +1828,10 @@ static const byte _town_desc[] = {
 	SLE_VAR(Town,fund_buildings_months,	SLE_UINT8),
 	SLE_VAR(Town,road_build_months,			SLE_UINT8),
 
-	// reserve extra space in savegame here. (currently 32 bytes)
-	SLE_CONDARR(NullStruct,null,SLE_FILE_U64 | SLE_VAR_NULL, 4, 2, 255),
+	SLE_VAR(Town,exclusivity,						SLE_UINT8),
+	SLE_VAR(Town,exclusive_counter,			SLE_UINT8),
+	// reserve extra space in savegame here. (currently 30 bytes)
+	SLE_CONDARR(NullStruct,null,SLE_FILE_U8 | SLE_VAR_NULL, 30, 2, 255),
 
 	SLE_END()
 };

town_gui.c

@@ -109,9 +109,9 @@ static void TownAuthorityWndProc(Window *w, WindowEvent *e)
 			// Draw list of players
 			y = 25;
 			FOR_ALL_PLAYERS(p) {
-				if (p->is_active && HASBIT(t->have_ratings, p->index)) {
-					DrawPlayerIcon(p->index, 2, y);
-					
+				if (p->is_active && (HASBIT(t->have_ratings, p->index) || t->exclusivity==p->index)) {
+					if(t->exclusivity==p->index) DrawPlayerIcon(p->index, 2, y);
+
 					SET_DPARAM16(0, p->name_1);
 					SET_DPARAM32(1, p->name_2);
 					SET_DPARAM16(2, GetPlayerNameString(p->index, 3));
@@ -133,7 +133,7 @@ static void TownAuthorityWndProc(Window *w, WindowEvent *e)
 							So we'll just shift the rating one back if player is AI and all is fine
 						*/
 					SET_DPARAM16((IS_HUMAN_PLAYER(p->index) ? 4 : 3), str);
-					DrawString(19, y, STR_2024, 0);
+					DrawString(19, y, STR_2024, (t->exclusivity==p->index)?3:0);
 					y+=10;
 				}
 			}

ttd.c

@@ -1039,6 +1039,24 @@ void CheckIsPlayerActive()
 	}
 }
 
+// since savegame version 4.1, exclusive transport rights are stored at towns
+void UpdateExclusiveRights()
+{
+	Town *t;
+	FOR_ALL_TOWNS(t) if (t->xy != 0) {
+		t->exclusivity=(byte)-1;
+	}
+	
+	/* FIXME old exclusive rights status is not being imported.
+			could be implemented this way:
+			1.) Go through all stations
+					Build an array town_blocked[ town_id ][ player_id ]
+				 that stores if at least one station in that town is blocked for a player
+			2.) Go through that array, if you find a town that is not blocked for
+				 	one player, but for all others, then give him exclusivity.
+	*/
+}
+
 extern void UpdateOldAircraft();
 
 bool AfterLoadGame(uint version)
@@ -1051,6 +1069,11 @@ bool AfterLoadGame(uint version)
 		ConvertTownOwner();
 	}
 
+	// from version 4.1 of the savegame, exclusive rights are stored at towns
+	if (version <= 0x400) {
+		UpdateExclusiveRights();
+	}
+	
 	// convert road side to my format.
 	if (_opt.road_side) _opt.road_side = 1;