(svn r23405) -Codechange: Keep a matrix of cargos accepted by houses for each town (michi_cc).

src/saveload/afterload.cpp

@@ -2700,6 +2700,19 @@ bool AfterLoadGame()
 	 * which is done by StartupEngines(). */
 	if (gcf_res != GLC_ALL_GOOD) StartupEngines();
 
+	if (IsSavegameVersionBefore(166)) {
+		/* Update cargo acceptance map of towns. */
+		for (TileIndex t = 0; t < map_size; t++) {
+			if (!IsTileType(t, MP_HOUSE)) continue;
+			Town::Get(GetTownIndex(t))->cargo_accepted.Add(t);
+		}
+
+		Town *town;
+		FOR_ALL_TOWNS(town) {
+			UpdateTownCargos(town);
+		}
+	}
+
 	/* Road stops is 'only' updating some caches */
 	AfterLoadRoadStops();
 	AfterLoadLabelMaps();

src/saveload/town_sl.cpp

@@ -97,6 +97,7 @@ void UpdateHousesAndTowns()
 	/* Update the population and num_house dependant values */
 	FOR_ALL_TOWNS(town) {
 		UpdateTownRadius(town);
+		UpdateTownCargos(town);
 	}
 }
 
@@ -176,6 +177,8 @@ static const SaveLoad _town_desc[] = {
 
 	SLE_CONDLST(Town, psa_list,            REF_STORAGE,                161, SL_MAX_VERSION),
 
+	SLE_CONDVAR(Town, cargo_produced,       SLE_UINT32,                166, SL_MAX_VERSION),
+
 	/* reserve extra space in savegame here. (currently 30 bytes) */
 	SLE_CONDNULL(30, 2, SL_MAX_VERSION),
 
@@ -210,6 +213,19 @@ static void Load_HIDS()
 	Load_NewGRFMapping(_house_mngr);
 }
 
+const SaveLoad *GetTileMatrixDesc()
+{
+	/* Here due to private member vars. */
+	static const SaveLoad _tilematrix_desc[] = {
+		SLE_VAR(AcceptanceMatrix, area.tile, SLE_UINT32),
+		SLE_VAR(AcceptanceMatrix, area.w,    SLE_UINT16),
+		SLE_VAR(AcceptanceMatrix, area.h,    SLE_UINT16),
+		SLE_END()
+	};
+
+	return _tilematrix_desc;
+}
+
 static void RealSave_Town(Town *t)
 {
 	SlObject(t, _town_desc);
@@ -220,6 +236,14 @@ static void RealSave_Town(Town *t)
 	for (int i = TE_BEGIN; i < NUM_TE; i++) {
 		SlObject(&t->received[i], _town_received_desc);
 	}
+
+	if (IsSavegameVersionBefore(166)) return;
+
+	SlObject(&t->cargo_accepted, GetTileMatrixDesc());
+	if (t->cargo_accepted.area.w != 0) {
+		uint arr_len = t->cargo_accepted.area.w / AcceptanceMatrix::GRID * t->cargo_accepted.area.h / AcceptanceMatrix::GRID;
+		SlArray(t->cargo_accepted.data, arr_len, SLE_UINT32);
+	}
 }
 
 static void Save_TOWN()
@@ -250,6 +274,18 @@ static void Load_TOWN()
 		if (t->townnamegrfid == 0 && !IsInsideMM(t->townnametype, SPECSTR_TOWNNAME_START, SPECSTR_TOWNNAME_LAST)) {
 			SlErrorCorrupt("Invalid town name generator");
 		}
+
+		if (IsSavegameVersionBefore(166)) continue;
+
+		SlObject(&t->cargo_accepted, GetTileMatrixDesc());
+		if (t->cargo_accepted.area.w != 0) {
+			uint arr_len = t->cargo_accepted.area.w / AcceptanceMatrix::GRID * t->cargo_accepted.area.h / AcceptanceMatrix::GRID;
+			t->cargo_accepted.data = MallocT<uint32>(arr_len);
+			SlArray(t->cargo_accepted.data, arr_len, SLE_UINT32);
+
+			/* Rebuild total cargo acceptance. */
+			UpdateTownCargoTotal(t);
+		}
 	}
 }