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Change #8159: Remove now unused town cargo caches without bumping the savegame version

Browse Source
pull/167/head
dP 4 years ago committed by Niels Martin Hansen
parent 380fd8cab4
commit 7045186594
5 changed files with 16 additions and 128 deletions
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12
src/saveload/afterload.cpp
Unescape Escape View File

@ -2830,18 +2830,6 @@ bool AfterLoadGame()
* which is done by StartupEngines(). */
if (gcf_res != GLC_ALL_GOOD) StartupEngines();
if (IsSavegameVersionBefore(SLV_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);
}
for (Town *town : Town::Iterate()) {
UpdateTownCargoes(town);
}
}
/* The road owner of standard road stops was not properly accounted for. */
if (IsSavegameVersionBefore(SLV_172)) {
for (TileIndex t = 0; t < map_size; t++) {

32
src/saveload/town_sl.cpp
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@ -13,12 +13,16 @@
#include "../landscape.h"
#include "../subsidy_func.h"
#include "../strings_func.h"
#include "../tilematrix_type.hpp"
#include "saveload.h"
#include "newgrf_sl.h"
#include "../safeguards.h"
/* TODO: Remove acceptance matrix from the savegame completely. */
typedef TileMatrix<CargoTypes, 4> AcceptanceMatrix;
/**
* Rebuild all the cached variables of towns.
*/
@ -48,9 +52,7 @@ void RebuildTownCaches()
/* Update the population and num_house dependent values */
for (Town *town : Town::Iterate()) {
UpdateTownRadius(town);
UpdateTownCargoes(town);
}
UpdateTownCargoBitmap();
}
/**
@ -190,8 +192,8 @@ static const SaveLoad _town_desc[] = {
SLE_CONDLST(Town, psa_list, REF_STORAGE, SLV_161, SL_MAX_VERSION),
SLE_CONDVAR(Town, cargo_produced, SLE_FILE_U32 | SLE_VAR_U64, SLV_166, SLV_EXTEND_CARGOTYPES),
SLE_CONDVAR(Town, cargo_produced, SLE_UINT64, SLV_EXTEND_CARGOTYPES, SL_MAX_VERSION),
SLE_CONDNULL(4, SLV_166, SLV_EXTEND_CARGOTYPES), ///< cargo_produced, no longer in use
SLE_CONDNULL(8, SLV_EXTEND_CARGOTYPES, SL_MAX_VERSION), ///< cargo_produced, no longer in use
/* reserve extra space in savegame here. (currently 30 bytes) */
SLE_CONDNULL(30, SLV_2, SL_MAX_VERSION),
@ -253,11 +255,9 @@ static void RealSave_Town(Town *t)
if (IsSavegameVersionBefore(SLV_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);
}
/* Write an empty matrix to avoid bumping savegame version. */
AcceptanceMatrix dummy;
SlObject(&dummy, GetTileMatrixDesc());
}
static void Save_TOWN()
@ -290,14 +290,12 @@ static void Load_TOWN()
if (IsSavegameVersionBefore(SLV_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<CargoTypes>(arr_len);
SlArray(t->cargo_accepted.data, arr_len, SLE_UINT32);
/* Rebuild total cargo acceptance. */
UpdateTownCargoTotal(t);
/* Discard acceptance matrix to avoid bumping savegame version. */
AcceptanceMatrix dummy;
SlObject(&dummy, GetTileMatrixDesc());
if (dummy.area.w != 0) {
uint arr_len = dummy.area.w / AcceptanceMatrix::GRID * dummy.area.h / AcceptanceMatrix::GRID;
for (arr_len *= 4; arr_len != 0; arr_len--) SlReadByte();
}
}
}

2
src/subsidy.cpp
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@ -434,7 +434,7 @@ bool FindSubsidyCargoDestination(CargoID cid, SourceType src_type, SourceID src)
CargoArray town_cargo_accepted = GetAcceptanceAroundTiles(dst_town->xy, 1, 1, SUBSIDY_TOWN_CARGO_RADIUS);
/* Check if the town can accept this cargo. */
if (town_cargo_accepted[cid] >= 8) return false;
if (town_cargo_accepted[cid] < 8) return false;
dst = dst_town->index;
break;

12
src/town.h
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@ -15,7 +15,6 @@
#include "subsidy_type.h"
#include "newgrf_storage.h"
#include "cargotype.h"
#include "tilematrix_type.hpp"
#include <list>
template <typename T>
@ -24,8 +23,6 @@ struct BuildingCounts {
T class_count[HOUSE_CLASS_MAX];
};
typedef TileMatrix<CargoTypes, 4> AcceptanceMatrix;
static const uint CUSTOM_TOWN_NUMBER_DIFFICULTY = 4; ///< value for custom town number in difficulty settings
static const uint CUSTOM_TOWN_MAX_NUMBER = 5000; ///< this is the maximum number of towns a user can specify in customisation
@ -83,10 +80,6 @@ struct Town : TownPool::PoolItem<&_town_pool> {
inline byte GetPercentTransported(CargoID cid) const { return this->supplied[cid].old_act * 256 / (this->supplied[cid].old_max + 1); }
/* Cargo production and acceptance stats. */
CargoTypes cargo_produced; ///< Bitmap of all cargoes produced by houses in this town.
AcceptanceMatrix cargo_accepted; ///< Bitmap of cargoes accepted by houses for each 4*4 map square of the town.
CargoTypes cargo_accepted_total; ///< NOSAVE: Bitmap of all cargoes accepted by houses in this town.
StationList stations_near; ///< NOSAVE: List of nearby stations.
uint16 time_until_rebuild; ///< time until we rebuild a house
@ -203,9 +196,6 @@ void ResetHouses();
void ClearTownHouse(Town *t, TileIndex tile);
void UpdateTownMaxPass(Town *t);
void UpdateTownRadius(Town *t);
void UpdateTownCargoes(Town *t);
void UpdateTownCargoTotal(Town *t);
void UpdateTownCargoBitmap();
CommandCost CheckIfAuthorityAllowsNewStation(TileIndex tile, DoCommandFlag flags);
Town *ClosestTownFromTile(TileIndex tile, uint threshold);
void ChangeTownRating(Town *t, int add, int max, DoCommandFlag flags);
@ -313,8 +303,6 @@ static inline uint16 TownTicksToGameTicks(uint16 ticks) {
}
extern CargoTypes _town_cargoes_accepted;
RoadType GetTownRoadType(const Town *t);
#endif /* TOWN_H */

86
src/town_cmd.cpp
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@ -55,7 +55,6 @@
#include "safeguards.h"
TownID _new_town_id;
CargoTypes _town_cargoes_accepted; ///< Bitmap of all cargoes accepted by houses.
/* Initialize the town-pool */
TownPool _town_pool("Town");
@ -782,85 +781,6 @@ static void ChangeTileOwner_Town(TileIndex tile, Owner old_owner, Owner new_owne
/* not used */
}
/** Update the total cargo acceptance of the whole town.
* @param t The town to update.
*/
void UpdateTownCargoTotal(Town *t)
{
t->cargo_accepted_total = 0;
const TileArea &area = t->cargo_accepted.GetArea();
TILE_AREA_LOOP(tile, area) {
if (TileX(tile) % AcceptanceMatrix::GRID == 0 && TileY(tile) % AcceptanceMatrix::GRID == 0) {
t->cargo_accepted_total |= t->cargo_accepted[tile];
}
}
}
/**
* Update accepted town cargoes around a specific tile.
* @param t The town to update.
* @param start Update the values around this tile.
* @param update_total Set to true if the total cargo acceptance should be updated.
*/
static void UpdateTownCargoes(Town *t, TileIndex start, bool update_total = true)
{
CargoArray accepted, produced;
CargoTypes dummy = 0;
/* Gather acceptance for all houses in an area around the start tile.
* The area is composed of the square the tile is in, extended one square in all
* directions as the coverage area of a single station is bigger than just one square. */
TileArea area = AcceptanceMatrix::GetAreaForTile(start, 1);
TILE_AREA_LOOP(tile, area) {
if (!IsTileType(tile, MP_HOUSE) || GetTownIndex(tile) != t->index) continue;
AddAcceptedCargo_Town(tile, accepted, &dummy);
AddProducedCargo_Town(tile, produced);
}
/* Create bitmap of produced and accepted cargoes. */
CargoTypes acc = 0;
for (uint cid = 0; cid < NUM_CARGO; cid++) {
if (accepted[cid] >= 8) SetBit(acc, cid);
if (produced[cid] > 0) SetBit(t->cargo_produced, cid);
}
t->cargo_accepted[start] = acc;
if (update_total) UpdateTownCargoTotal(t);
}
/** Update cargo acceptance for the complete town.
* @param t The town to update.
*/
void UpdateTownCargoes(Town *t)
{
t->cargo_produced = 0;
const TileArea &area = t->cargo_accepted.GetArea();
if (area.tile == INVALID_TILE) return;
/* Update acceptance for each grid square. */
TILE_AREA_LOOP(tile, area) {
if (TileX(tile) % AcceptanceMatrix::GRID == 0 && TileY(tile) % AcceptanceMatrix::GRID == 0) {
UpdateTownCargoes(t, tile, false);
}
}
/* Update the total acceptance. */
UpdateTownCargoTotal(t);
}
/** Updates the bitmap of all cargoes accepted by houses. */
void UpdateTownCargoBitmap()
{
_town_cargoes_accepted = 0;
for (const Town *town : Town::Iterate()) {
_town_cargoes_accepted |= town->cargo_accepted_total;
}
}
static bool GrowTown(Town *t);
static void TownTickHandler(Town *t)
@ -2588,7 +2508,6 @@ static bool BuildTownHouse(Town *t, TileIndex tile)
MakeTownHouse(tile, t, construction_counter, construction_stage, house, random_bits);
UpdateTownRadius(t);
UpdateTownGrowthRate(t);
UpdateTownCargoes(t, tile);
return true;
}
@ -2673,9 +2592,6 @@ void ClearTownHouse(Town *t, TileIndex tile)
RemoveNearbyStations(t, tile, hs->building_flags);
UpdateTownRadius(t);
/* Update cargo acceptance. */
UpdateTownCargoes(t, tile);
}
/**
@ -3698,10 +3614,8 @@ void TownsMonthlyLoop()
UpdateTownGrowth(t);
UpdateTownRating(t);
UpdateTownUnwanted(t);
UpdateTownCargoes(t);
}
UpdateTownCargoBitmap();
}
void TownsYearlyLoop()

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