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(svn r9850) -Codechange: Introduction of the Override/Substitute manager. Currently only used for newhouses.

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Basically, it is more a gathering of IDs from grf files and ingame data.
This commit is contained in:
belugas 2007-05-15 21:36:58 +00:00
parent d2776ccde9
commit 3fb4003534
10 changed files with 261 additions and 106 deletions
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6
projects/openttd.vcproj
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@ -518,6 +518,9 @@
<File
RelativePath=".\..\src\newgrf_cargo.h">
</File>
<File
RelativePath=".\..\src\newgrf_commons.h">
</File>
<File
RelativePath=".\..\src\newgrf_config.h">
</File>
@ -946,6 +949,9 @@
<File
RelativePath=".\..\src\newgrf_cargo.cpp">
</File>
<File
RelativePath=".\..\src\newgrf_commons.cpp">
</File>
<File
RelativePath=".\..\src\newgrf_config.cpp">
</File>

8
projects/openttd_vs80.vcproj
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@ -919,6 +919,10 @@
RelativePath=".\..\src\newgrf_cargo.h"
>
</File>
<File
RelativePath=".\..\src\newgrf_commons.h"
>
</File>
<File
RelativePath=".\..\src\newgrf_config.h"
>
@ -1483,6 +1487,10 @@
RelativePath=".\..\src\newgrf_cargo.cpp"
>
</File>
<File
RelativePath=".\..\src\newgrf_commons.cpp"
>
</File>
<File
RelativePath=".\..\src\newgrf_config.cpp"
>

2
source.list
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@ -140,6 +140,7 @@ newgrf.h
newgrf_callbacks.h
newgrf_canal.h
newgrf_cargo.h
newgrf_commons.h
newgrf_config.h
newgrf_engine.h
newgrf_house.h
@ -286,6 +287,7 @@ ai/trolly/trolly.cpp
newgrf.cpp
newgrf_canal.cpp
newgrf_cargo.cpp
newgrf_commons.cpp
newgrf_config.cpp
newgrf_engine.cpp
newgrf_house.cpp

7
src/newgrf.cpp
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@ -40,6 +40,7 @@
#include "cargotype.h"
#include "industry.h"
#include "newgrf_canal.h"
#include "newgrf_commons.h"
/* TTDPatch extended GRF format codec
* (c) Petr Baudis 2004 (GPL'd)
@ -1246,7 +1247,7 @@ static bool TownHouseChangeInfo(uint hid, int numinfo, int prop, byte **bufp, in
_cur_grffile->housespec = CallocT<HouseSpec*>(HOUSE_MAX);
/* Reset any overrides that have been set. */
ResetHouseOverrides();
_house_mngr.ResetOverride();
}
housespec = &_cur_grffile->housespec[hid];
@ -1372,7 +1373,7 @@ static bool TownHouseChangeInfo(uint hid, int numinfo, int prop, byte **bufp, in
return false;
}
AddHouseOverride(hid, override);
_house_mngr.Add(hid, override);
}
break;
@ -4591,7 +4592,7 @@ static void FinaliseHouseArray()
for (int i = 0; i < HOUSE_MAX; i++) {
HouseSpec *hs = file->housespec[i];
if (hs != NULL) {
SetHouseSpec(hs);
_house_mngr.SetEntitySpec(hs);
if (hs->min_date < 1930) reset_dates = false;
}
}

150
src/newgrf_commons.cpp Normal file
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@ -0,0 +1,150 @@
/* $Id$ */
/** @file newgrf_commons.cpp Implementation of the class OverrideManagerBase
* and its descendance, present and futur
*/
#include "stdafx.h"
#include "openttd.h"
#include "town.h"
#include "industry.h"
#include "newgrf.h"
#include "newgrf_commons.h"
/** Constructor of generic class
* @param offset end of original data for this entity. i.e: houses = 110
* @param maximum of entities this manager can deal with. i.e: houses = 512
* @param invalid is the ID used to identify an invalid entity id
*/
OverrideManagerBase::OverrideManagerBase(uint16 offset, uint16 maximum, uint16 invalid)
{
max_offset = offset;
max_new_entities = maximum;
invalid_ID = invalid;
mapping_ID = CallocT<EntityIDMapping>(max_new_entities);
entity_overrides = MallocT<uint16>(max_offset);
memset(entity_overrides, invalid, sizeof(entity_overrides));
}
/** Destructor of the generic class.
* Frees allocated memory of constructor
*/
OverrideManagerBase::~OverrideManagerBase()
{
free(mapping_ID);
free(entity_overrides);
}
/** Since the entity IDs defined by the GRF file does not necessarily correlate
* to those used by the game, the IDs used for overriding old entities must be
* translated when the entity spec is set.
* @param local_id id in grf file
* @param entity_type original entity type
*/
void OverrideManagerBase::Add(uint8 local_id, uint entity_type)
{
assert(entity_type < max_offset);
entity_overrides[entity_type] = local_id;
}
/** Resets the mapping, which is used while initializing game */
void OverrideManagerBase::ResetMapping()
{
memset(mapping_ID, 0, (max_new_entities - 1) * sizeof(EntityIDMapping));
}
/** Resets the override, which is used while initializing game */
void OverrideManagerBase::ResetOverride()
{
for (uint16 i = 0; i < max_offset; i++) {
entity_overrides[i] = invalid_ID;
}
}
/** Return the ID (if ever available) of a previously inserted entity.
* @param grf_local_id ID of this enity withing the grfID
* @param grfid ID of the grf file
* @return the ID of the candidate, of the Invalid flag item ID
*/
uint16 OverrideManagerBase::GetID(uint8 grf_local_id, uint32 grfid)
{
const EntityIDMapping *map;
for (uint16 id = max_offset; id < max_new_entities; id++) {
map = &mapping_ID[id];
if (map->entity_id == grf_local_id && map->grfid == grfid) {
return id;
}
}
return invalid_ID;
}
/** Reserves a place in the mapping array for an entity to be installed
* @param grf_local_id is an arbitrary id given by the grf's author. Also known as setid
* @param grfid is the id of the grf file itself
* @param substitute_id is the original entity from which data is copied for the new one
* @return the proper usable slot id, or invalid marker if none is found
*/
uint16 OverrideManagerBase::AddEntityID(byte grf_local_id, uint32 grfid, byte substitute_id)
{
uint16 id = this->GetID(grf_local_id, grfid);
EntityIDMapping *map;
/* Look to see if this entity has already been added. This is done
* separately from the loop below in case a GRF has been deleted, and there
* are any gaps in the array.
*/
if (id != invalid_ID) {
return id;
}
/* This entity hasn't been defined before, so give it an ID now. */
for (id = max_offset; id < max_new_entities; id++) {
map = &mapping_ID[id];
if (map->entity_id == 0 && map->grfid == 0) {
map->entity_id = grf_local_id;
map->grfid = grfid;
map->substitute_id = substitute_id;
return id;
}
}
return invalid_ID;
}
/** Gives the substitute of the entity, as specified by the grf file
* @param entity_id of the entity being queried
* @return mapped id
*/
uint16 OverrideManagerBase::GetSubstituteID(byte entity_id)
{
return mapping_ID[entity_id].substitute_id;
}
/** Install the specs into the HouseSpecs array
* It will find itself the proper slot onwhich it will go
* @param hs HouseSpec read from the grf file, ready for inclusion
*/
void HouseOverrideManager::SetEntitySpec(const HouseSpec *hs)
{
HouseID house_id = this->AddEntityID(hs->local_id, hs->grffile->grfid, hs->substitute_id);
if (house_id == invalid_ID) {
grfmsg(1, "House.SetEntitySpec: Too many houses allocated. Ignoring.");
return;
}
memcpy(&_house_specs[house_id], hs, sizeof(*hs));
/* Now add the overrides. */
for (int i = 0; i != max_offset; i++) {
HouseSpec *overridden_hs = GetHouseSpecs(i);
if (entity_overrides[i] != hs->local_id) continue;
overridden_hs->override = house_id;
entity_overrides[i] = invalid_ID;
}
}

69
src/newgrf_commons.h Normal file
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@ -0,0 +1,69 @@
/* $Id$ */
/** @file newgrf_commons.h This file simplyfies and embeds a common mechanism of
* loading/saving and mapping of grf entities.
*/
#ifndef NEWGRF_COMMONS_H
#define NEWGRF_COMMONS_H
/**
* Maps an entity id stored on the map to a GRF file.
* Entities are objects used ingame (houses, industries, industry tiles) for
* which we need to correlate the ids from the grf files with the ones in the
* the savegames themselves.
* An array of EntityIDMapping structs is saved with the savegame so
* that those GRFs can be loaded in a different order, or removed safely. The
* index in the array is the entity's ID stored on the map.
*
* The substitute ID is the ID of an original entity that should be used instead
* if the GRF containing the new entity is not available.
*/
struct EntityIDMapping {
uint32 grfid; ///< The GRF ID of the file the entity belongs to
uint8 entity_id; ///< The entity ID within the GRF file
uint8 substitute_id; ///< The (original) entity ID to use if this GRF is not available
};
class OverrideManagerBase
{
protected:
uint16 *entity_overrides;
uint16 max_offset; ///< what is the length of the original entity's array of specs
uint16 max_new_entities; ///< what is the amount of entities, old and new summed
uint16 invalid_ID; ///< ID used to dected invalid entities;
virtual uint16 AddEntityID(byte grf_local_id, uint32 grfid, byte substitute_id);
public:
EntityIDMapping *mapping_ID; ///< mapping of ids from grf files. Public out of convenience
OverrideManagerBase(uint16 offset, uint16 maximum, uint16 invalid);
virtual ~OverrideManagerBase();
void ResetOverride();
void ResetMapping();
void Add(uint8 local_id, uint entity_type);
uint16 GetSubstituteID(byte entity_id);
uint16 GetID(uint8 grf_local_id, uint32 grfid);
inline uint16 GetMaxMapping() { return max_new_entities; };
inline uint16 GetMaxOffset() { return max_offset; };
};
struct HouseSpec;
class HouseOverrideManager : public OverrideManagerBase
{
public:
HouseOverrideManager(uint16 offset, uint16 maximum, uint16 invalid) : OverrideManagerBase(offset, maximum, invalid) {};
void SetEntitySpec(const HouseSpec *hs);
};
extern HouseOverrideManager _house_mngr;
#endif /* NEWGRF_COMMONS_H */

94
src/newgrf_house.cpp
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@ -24,92 +24,12 @@
#include "newgrf_callbacks.h"
#include "newgrf_town.h"
#include "newgrf_sound.h"
#include "newgrf_commons.h"
static BuildingCounts _building_counts;
static HouseClassMapping _class_mapping[HOUSE_CLASS_MAX];
HouseIDMapping _house_id_mapping[HOUSE_MAX];
/* Since the house IDs defined by the GRF file don't necessarily correlate
* to those used by the game, the IDs used for overriding old houses must be
* translated when the house spec is set. */
static uint16 _house_overrides[NEW_HOUSE_OFFSET];
void AddHouseOverride(uint8 local_id, uint house_type)
{
assert(house_type < NEW_HOUSE_OFFSET);
_house_overrides[house_type] = local_id;
}
void ResetHouseOverrides()
{
for (int i = 0; i != lengthof(_house_overrides); i++) {
_house_overrides[i] = INVALID_HOUSE_ID;
}
}
static HouseID GetHouseID(byte grf_local_id, uint32 grfid)
{
const HouseIDMapping *map;
for (HouseID house_id = NEW_HOUSE_OFFSET; house_id != lengthof(_house_id_mapping); house_id++) {
map = &_house_id_mapping[house_id];
if (map->house_id == grf_local_id && map->grfid == grfid) return house_id;
}
return INVALID_HOUSE_ID;
}
static HouseID AddHouseID(byte grf_local_id, uint32 grfid, byte substitute_id)
{
HouseID house_id;
HouseIDMapping *map;
/* Look to see if this house has already been added. This is done
* separately from the loop below in case a GRF has been deleted, and there
* are any gaps in the array. */
house_id = GetHouseID(grf_local_id, grfid);
if (house_id != INVALID_HOUSE_ID) return house_id;
/* This house hasn't been defined before, so give it an ID now. */
for (house_id = NEW_HOUSE_OFFSET; house_id != lengthof(_house_id_mapping); house_id++) {
map = &_house_id_mapping[house_id];
if (map->house_id == 0 && map->grfid == 0) {
map->house_id = grf_local_id;
map->grfid = grfid;
map->substitute_id = substitute_id;
return house_id;
}
}
return INVALID_HOUSE_ID;
}
void SetHouseSpec(const HouseSpec *hs)
{
HouseID house_id = AddHouseID(hs->local_id, hs->grffile->grfid, hs->substitute_id);
if (house_id == INVALID_HOUSE_ID) {
grfmsg(1, "SetHouseSpec: Too many houses allocated. Ignoring.");
return;
}
memcpy(&_house_specs[house_id], hs, sizeof(*hs));
/* Now add the overrides. */
for (int i = 0; i != lengthof(_house_overrides); i++) {
HouseSpec *overridden_hs = GetHouseSpecs(i);
if (_house_overrides[i] != hs->local_id) continue;
overridden_hs->override = house_id;
_house_overrides[i] = INVALID_HOUSE_ID;
}
}
void ResetHouseIDMapping()
{
memset(&_house_id_mapping, 0, sizeof(_house_id_mapping));
}
HouseOverrideManager _house_mngr(NEW_HOUSE_OFFSET, HOUSE_MAX, INVALID_HOUSE_ID);
void CheckHouseIDs()
{
@ -122,7 +42,7 @@ void CheckHouseIDs()
if (!GetHouseSpecs(house_id)->enabled && house_id >= NEW_HOUSE_OFFSET) {
/* The specs for this type of house are not available any more, so
* replace it with the substitute original house type. */
SetHouseType(t, _house_id_mapping[house_id].substitute_id);
SetHouseType(t, _house_mngr.GetSubstituteID(house_id));
}
}
@ -313,7 +233,7 @@ static uint32 HouseGetVariable(const ResolverObject *object, byte variable, byte
const HouseSpec *hs = GetHouseSpecs(house_id);
if (hs->grffile == NULL) return 0;
HouseID new_house = GetHouseID(parameter, hs->grffile->grfid);
HouseID new_house = _house_mngr.GetID(parameter, hs->grffile->grfid);
return new_house == INVALID_HOUSE_ID ? 0 : GetNumHouses(new_house, town);
}
@ -577,7 +497,11 @@ bool NewHouseTileLoop(TileIndex tile)
return true;
}
/* @todo: Magic with triggers goes here. Got to implement that, one day. .. */
/* @todo: Magic with triggers goes here. Got to implement that, one day. ..
* Process randomizing of tiles following specs.
* Once done, redraw the house
* MarkTileDirtyByTile(tile);
*/
if (HASBIT(hs->callback_mask, CBM_ANIMATION_START_STOP)) {
/* If this house is marked as having a synchronised callback, all the

8
src/newgrf_house.h
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@ -41,15 +41,7 @@ struct HouseClassMapping {
uint8 class_id; ////< The class id within the grf file
};
extern HouseIDMapping _house_id_mapping[HOUSE_MAX]; ///< Declared in newgrf_house.cpp
void AddHouseOverride(uint8 local_id, uint house_type);
void ResetHouseOverrides();
void SetHouseSpec(const HouseSpec *hs);
void CheckHouseIDs();
void ResetHouseIDMapping();
HouseClassID AllocateHouseClassID(byte grf_class_id, uint32 grfid);

3
src/openttd.cpp
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@ -61,6 +61,7 @@
#include "newgrf.h"
#include "newgrf_config.h"
#include "newgrf_house.h"
#include "newgrf_commons.h"
#include "player_face.h"
#include "bridge_map.h"
@ -685,7 +686,7 @@ static void MakeNewGame(bool from_heightmap)
_game_mode = GM_NORMAL;
ResetGRFConfig(true);
ResetHouseIDMapping();
_house_mngr.ResetMapping();
GenerateWorldSetCallback(&MakeNewGameDone);
GenerateWorld(from_heightmap ? GW_HEIGHTMAP : GW_NEWGAME, 1 << _patches.map_x, 1 << _patches.map_y);

20
src/town_cmd.cpp
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@ -38,6 +38,7 @@
#include "newgrf.h"
#include "newgrf_callbacks.h"
#include "newgrf_house.h"
#include "newgrf_commons.h"
/**
* Called if a new block is added to the town-pool
@ -2371,19 +2372,19 @@ static const SaveLoad _town_desc[] = {
/* Save and load the mapping between the house id on the map, and the grf file
* it came from. */
static const SaveLoad _house_id_mapping_desc[] = {
SLE_VAR(HouseIDMapping, grfid, SLE_UINT32),
SLE_VAR(HouseIDMapping, house_id, SLE_UINT8),
SLE_VAR(HouseIDMapping, substitute_id, SLE_UINT8),
SLE_VAR(EntityIDMapping, grfid, SLE_UINT32),
SLE_VAR(EntityIDMapping, entity_id, SLE_UINT8),
SLE_VAR(EntityIDMapping, substitute_id, SLE_UINT8),
SLE_END()
};
static void Save_HOUSEIDS()
{
uint i;
uint j = _house_mngr.GetMaxMapping();
for (i = 0; i != lengthof(_house_id_mapping); i++) {
for (uint i = 0; i < j; i++) {
SlSetArrayIndex(i);
SlObject(&_house_id_mapping[i], _house_id_mapping_desc);
SlObject(&_house_mngr.mapping_ID[i], _house_id_mapping_desc);
}
}
@ -2391,11 +2392,12 @@ static void Load_HOUSEIDS()
{
int index;
ResetHouseIDMapping();
_house_mngr.ResetMapping();
uint max_id = _house_mngr.GetMaxMapping();
while ((index = SlIterateArray()) != -1) {
if ((uint)index >= lengthof(_house_id_mapping)) break;
SlObject(&_house_id_mapping[index], _house_id_mapping_desc);
if ((uint)index >= max_id) break;
SlObject(&_house_mngr.mapping_ID[index], _house_id_mapping_desc);
}
}