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-rw-r--r--src/newgrf.cpp7
-rw-r--r--src/newgrf_commons.cpp150
-rw-r--r--src/newgrf_commons.h69
-rw-r--r--src/newgrf_house.cpp94
-rw-r--r--src/newgrf_house.h8
-rw-r--r--src/openttd.cpp3
-rw-r--r--src/town_cmd.cpp20
7 files changed, 245 insertions, 106 deletions
diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index d2e2c21e8..3dc46fcbf 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -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;
}
}
diff --git a/src/newgrf_commons.cpp b/src/newgrf_commons.cpp
new file mode 100644
index 000000000..f52c1442a
--- /dev/null
+++ b/src/newgrf_commons.cpp
@@ -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;
+ }
+}
diff --git a/src/newgrf_commons.h b/src/newgrf_commons.h
new file mode 100644
index 000000000..812f514a6
--- /dev/null
+++ b/src/newgrf_commons.h
@@ -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 */
diff --git a/src/newgrf_house.cpp b/src/newgrf_house.cpp
index 79ad7f3d5..13ca035a1 100644
--- a/src/newgrf_house.cpp
+++ b/src/newgrf_house.cpp
@@ -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
diff --git a/src/newgrf_house.h b/src/newgrf_house.h
index 513b46094..bdd21b907 100644
--- a/src/newgrf_house.h
+++ b/src/newgrf_house.h
@@ -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);
diff --git a/src/openttd.cpp b/src/openttd.cpp
index 088d9fce5..a2bb58b43 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -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);
diff --git a/src/town_cmd.cpp b/src/town_cmd.cpp
index 4f1e29b8d..942b65c85 100644
--- a/src/town_cmd.cpp
+++ b/src/town_cmd.cpp
@@ -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);
}
}