/* $Id$ */ /* * This file is part of OpenTTD. * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2. * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>. */ /** @file newgrf_object.cpp Handling of object NewGRFs. */ #include "stdafx.h" #include "company_base.h" #include "company_func.h" #include "debug.h" #include "newgrf_class_func.h" #include "newgrf_object.h" #include "newgrf_sound.h" #include "newgrf_spritegroup.h" #include "newgrf_town.h" #include "object_base.h" #include "object_map.h" #include "tile_cmd.h" #include "town.h" #include "water.h" #include "newgrf_animation_base.h" /** The override manager for our objects. */ ObjectOverrideManager _object_mngr(NEW_OBJECT_OFFSET, NUM_OBJECTS, INVALID_OBJECT_TYPE); extern const ObjectSpec _original_objects[NEW_OBJECT_OFFSET]; /** All the object specifications. */ ObjectSpec _object_specs[NUM_OBJECTS]; /** * Get the specification associated with a specific ObjectType. * @param index The object type to fetch. * @return The specification. */ /* static */ const ObjectSpec *ObjectSpec::Get(ObjectType index) { assert(index < NUM_OBJECTS); return &_object_specs[index]; } /** * Get the specification associated with a tile. * @param tile The tile to fetch the data for. * @return The specification. */ /* static */ const ObjectSpec *ObjectSpec::GetByTile(TileIndex tile) { return ObjectSpec::Get(GetObjectType(tile)); } /** * Check whether the object is available at this time. * @return true if it is available. */ bool ObjectSpec::IsAvailable() const { return this->enabled && _date > this->introduction_date && (_date < this->end_of_life_date || this->end_of_life_date < this->introduction_date + 365) && HasBit(this->climate, _settings_game.game_creation.landscape) && (flags & (_game_mode != GM_EDITOR ? OBJECT_FLAG_ONLY_IN_SCENEDIT : OBJECT_FLAG_ONLY_IN_GAME)) == 0; } /** * Gets the index of this spec. * @return The index. */ uint ObjectSpec::Index() const { return this - _object_specs; } /** This function initialize the spec arrays of objects. */ void ResetObjects() { /* Clean the pool. */ MemSetT(_object_specs, 0, lengthof(_object_specs)); /* And add our originals. */ MemCpyT(_object_specs, _original_objects, lengthof(_original_objects)); for (uint16 i = 0; i < lengthof(_original_objects); i++) { _object_specs[i].grf_prop.local_id = i; } } template <typename Tspec, typename Tid, Tid Tmax> /* static */ void NewGRFClass<Tspec, Tid, Tmax>::InsertDefaults() { /* We only add the transmitters in the scenario editor. */ if (_game_mode != GM_EDITOR) return; ObjectClassID cls = ObjectClass::Allocate('LTHS'); ObjectClass::SetName(cls, STR_OBJECT_CLASS_LTHS); _object_specs[OBJECT_LIGHTHOUSE].cls_id = cls; ObjectClass::Assign(&_object_specs[OBJECT_LIGHTHOUSE]); cls = ObjectClass::Allocate('TRNS'); ObjectClass::SetName(cls, STR_OBJECT_CLASS_TRNS); _object_specs[OBJECT_TRANSMITTER].cls_id = cls; ObjectClass::Assign(&_object_specs[OBJECT_TRANSMITTER]); } INSTANTIATE_NEWGRF_CLASS_METHODS(ObjectClass, ObjectSpec, ObjectClassID, OBJECT_CLASS_MAX) static uint32 ObjectGetRandomBits(const ResolverObject *object) { TileIndex t = object->u.object.tile; return IsValidTile(t) && IsTileType(t, MP_OBJECT) ? GetObjectRandomBits(t) : 0; } static uint32 ObjectGetTriggers(const ResolverObject *object) { return 0; } static void ObjectSetTriggers(const ResolverObject *object, int triggers) { } /** * Make an analysis of a tile and get the object type. * @param tile TileIndex of the tile to query * @param cur_grfid GRFID of the current callback chain * @return value encoded as per NFO specs */ static uint32 GetObjectIDAtOffset(TileIndex tile, uint32 cur_grfid) { if (!IsTileType(tile, MP_OBJECT)) { return 0xFFFF; } const ObjectSpec *spec = ObjectSpec::GetByTile(tile); /* Default objects have no associated NewGRF file */ if (spec->grf_prop.grffile == NULL) { return 0xFFFE; // Defined in another grf file } if (spec->grf_prop.grffile->grfid == cur_grfid) { // same object, same grf ? return spec->grf_prop.local_id; } return 0xFFFE; // Defined in another grf file } /** * Based on newhouses equivalent, but adapted for newobjects * @param parameter from callback. It's in fact a pair of coordinates * @param tile TileIndex from which the callback was initiated * @param index of the object been queried for * @param grf_version8 True, if we are dealing with a new NewGRF which uses GRF version >= 8. * @return a construction of bits obeying the newgrf format */ static uint32 GetNearbyObjectTileInformation(byte parameter, TileIndex tile, ObjectID index, bool grf_version8) { if (parameter != 0) tile = GetNearbyTile(parameter, tile); // only perform if it is required bool is_same_object = (IsTileType(tile, MP_OBJECT) && GetObjectIndex(tile) == index); return GetNearbyTileInformation(tile, grf_version8) | (is_same_object ? 1 : 0) << 8; } /** * Get the closest object of a given type. * @param tile The tile to start searching from. * @param type The type of the object to search for. * @param current The current object (to ignore). * @return The distance to the closest object. */ static uint32 GetClosestObject(TileIndex tile, ObjectType type, const Object *current) { uint32 best_dist = UINT32_MAX; const Object *o; FOR_ALL_OBJECTS(o) { if (GetObjectType(o->location.tile) != type || o == current) continue; best_dist = min(best_dist, DistanceManhattan(tile, o->location.tile)); } return best_dist; } /** * Implementation of var 65 * @param local_id Parameter given to the callback, which is the set id, or the local id, in our terminology. * @param grfid The object's GRFID. * @param tile The tile to look from. * @param current Object for which the inquiry is made * @return The formatted answer to the callback : rr(reserved) cc(count) dddd(manhattan distance of closest sister) */ static uint32 GetCountAndDistanceOfClosestInstance(byte local_id, uint32 grfid, TileIndex tile, const Object *current) { uint32 grf_id = GetRegister(0x100); // Get the GRFID of the definition to look for in register 100h uint32 idx; /* Determine what will be the object type to look for */ switch (grf_id) { case 0: // this is a default object type idx = local_id; break; case 0xFFFFFFFF: // current grf grf_id = grfid; /* FALL THROUGH */ default: // use the grfid specified in register 100h idx = _object_mngr.GetID(local_id, grf_id); break; } /* If the object type is invalid, there is none and the closest is far away. */ if (idx >= NUM_OBJECTS) return 0 | 0xFFFF; return Object::GetTypeCount(idx) << 16 | min(GetClosestObject(tile, idx, current), 0xFFFF); } /** Used by the resolver to get values for feature 0F deterministic spritegroups. */ static uint32 ObjectGetVariable(const ResolverObject *object, byte variable, uint32 parameter, bool *available) { const Object *o = object->u.object.o; TileIndex tile = object->u.object.tile; if (object->scope == VSG_SCOPE_PARENT) { /* Pass the request on to the town of the object */ return TownGetVariable(variable, parameter, available, (o == NULL) ? ClosestTownFromTile(tile, UINT_MAX) : o->town, object->grffile); } /* We get the town from the object, or we calculate the closest * town if we need to when there's no object. */ const Town *t = NULL; if (o == NULL) { switch (variable) { /* Allow these when there's no object. */ case 0x41: case 0x60: case 0x61: case 0x62: case 0x64: break; /* Allow these, but find the closest town. */ case 0x45: case 0x46: if (!IsValidTile(tile)) goto unhandled; t = ClosestTownFromTile(tile, UINT_MAX); break; /* Construction date */ case 0x42: return _date; /* Object founder information */ case 0x44: return _current_company; /* Object view */ case 0x48: return object->u.object.view; /* * Disallow the rest: * 0x40: Relative position is passed as parameter during construction. * 0x43: Animation counter is only for actual tiles. * 0x47: Object colour is only valid when its built. * 0x63: Animation counter of nearby tile, see above. */ default: goto unhandled; } /* If there's an invalid tile, then we don't have enough information at all. */ if (!IsValidTile(tile)) goto unhandled; } else { t = o->town; } switch (variable) { /* Relative position. */ case 0x40: { uint offset = tile - o->location.tile; uint offset_x = TileX(offset); uint offset_y = TileY(offset); return offset_y << 20 | offset_x << 16 | offset_y << 8 | offset_x; } /* Tile information. */ case 0x41: return GetTileSlope(tile) << 8 | GetTerrainType(tile); /* Construction date */ case 0x42: return o->build_date; /* Animation counter */ case 0x43: return GetAnimationFrame(tile); /* Object founder information */ case 0x44: return GetTileOwner(tile); /* Get town zone and Manhattan distance of closest town */ case 0x45: return GetTownRadiusGroup(t, tile) << 16 | min(DistanceManhattan(tile, t->xy), 0xFFFF); /* Get square of Euclidian distance of closes town */ case 0x46: return GetTownRadiusGroup(t, tile) << 16 | min(DistanceSquare(tile, t->xy), 0xFFFF); /* Object colour */ case 0x47: return o->colour; /* Object view */ case 0x48: return o->view; /* Get object ID at offset param */ case 0x60: return GetObjectIDAtOffset(GetNearbyTile(parameter, tile), object->grffile->grfid); /* Get random tile bits at offset param */ case 0x61: tile = GetNearbyTile(parameter, tile); return (IsTileType(tile, MP_OBJECT) && Object::GetByTile(tile) == o) ? GetObjectRandomBits(tile) : 0; /* Land info of nearby tiles */ case 0x62: return GetNearbyObjectTileInformation(parameter, tile, o == NULL ? INVALID_OBJECT : o->index, object->grffile->grf_version >= 8); /* Animation counter of nearby tile */ case 0x63: tile = GetNearbyTile(parameter, tile); return (IsTileType(tile, MP_OBJECT) && Object::GetByTile(tile) == o) ? GetAnimationFrame(tile) : 0; /* Count of object, distance of closest instance */ case 0x64: return GetCountAndDistanceOfClosestInstance(parameter, object->grffile->grfid, tile, o); } unhandled: DEBUG(grf, 1, "Unhandled object variable 0x%X", variable); *available = false; return UINT_MAX; } static const SpriteGroup *ObjectResolveReal(const ResolverObject *object, const RealSpriteGroup *group) { /* Objects do not have 'real' groups */ return NULL; } /** * Get the object's sprite group. * @param spec The specification to get the sprite group from. * @param o The object to get he sprite group for. * @return The resolved sprite group. */ static const SpriteGroup *GetObjectSpriteGroup(const ObjectSpec *spec, const Object *o) { const SpriteGroup *group = NULL; if (o == NULL) group = spec->grf_prop.spritegroup[CT_PURCHASE_OBJECT]; if (group != NULL) return group; /* Fall back to the default set if the selected cargo type is not defined */ return spec->grf_prop.spritegroup[0]; } /** * Store a value into the persistent storage of the object's parent. * @param object Object that we want to query. * @param pos Position in the persistent storage to use. * @param value Value to store. */ void ObjectStorePSA(ResolverObject *object, uint pos, int32 value) { /* Objects have no persistent storage. */ Object *o = object->u.object.o; if (object->scope != VSG_SCOPE_PARENT || o == NULL) return; /* Pass the request on to the town of the object */ TownStorePSA(o->town, object->grffile, pos, value); } /** * Returns a resolver object to be used with feature 0F spritegroups. */ static void NewObjectResolver(ResolverObject *res, const ObjectSpec *spec, Object *o, TileIndex tile, uint8 view = 0) { res->GetRandomBits = ObjectGetRandomBits; res->GetTriggers = ObjectGetTriggers; res->SetTriggers = ObjectSetTriggers; res->GetVariable = ObjectGetVariable; res->ResolveReal = ObjectResolveReal; res->StorePSA = ObjectStorePSA; res->u.object.o = o; res->u.object.tile = tile; res->u.object.view = view; res->callback = CBID_NO_CALLBACK; res->callback_param1 = 0; res->callback_param2 = 0; res->ResetState(); res->grffile = spec->grf_prop.grffile; } /** * Perform a callback for an object. * @param callback The callback to perform. * @param param1 The first parameter to pass to the NewGRF. * @param param2 The second parameter to pass to the NewGRF. * @param spec The specification of the object / the entry point. * @param o The object to call the callback for. * @param tile The tile the callback is called for. * @param view The view of the object (only used when o == NULL). * @return The result of the callback. */ uint16 GetObjectCallback(CallbackID callback, uint32 param1, uint32 param2, const ObjectSpec *spec, Object *o, TileIndex tile, uint8 view) { ResolverObject object; NewObjectResolver(&object, spec, o, tile, view); object.callback = callback; object.callback_param1 = param1; object.callback_param2 = param2; const SpriteGroup *group = SpriteGroup::Resolve(GetObjectSpriteGroup(spec, o), &object); if (group == NULL) return CALLBACK_FAILED; return group->GetCallbackResult(); } /** * Draw an group of sprites on the map. * @param ti Information about the tile to draw on. * @param group The group of sprites to draw. * @param spec Object spec to draw. */ static void DrawTileLayout(const TileInfo *ti, const TileLayoutSpriteGroup *group, const ObjectSpec *spec) { const DrawTileSprites *dts = group->ProcessRegisters(NULL); PaletteID palette = ((spec->flags & OBJECT_FLAG_2CC_COLOUR) ? SPR_2CCMAP_BASE : PALETTE_RECOLOUR_START) + Object::GetByTile(ti->tile)->colour; SpriteID image = dts->ground.sprite; PaletteID pal = dts->ground.pal; if (GB(image, 0, SPRITE_WIDTH) != 0) { /* If the ground sprite is the default flat water sprite, draw also canal/river borders * Do not do this if the tile's WaterClass is 'land'. */ if ((image == SPR_FLAT_WATER_TILE || spec->flags & OBJECT_FLAG_DRAW_WATER) && IsTileOnWater(ti->tile)) { DrawWaterClassGround(ti); } else { DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, palette)); } } DrawNewGRFTileSeq(ti, dts, TO_STRUCTURES, 0, palette); } /** * Draw an object on the map. * @param ti Information about the tile to draw on. * @param spec Object spec to draw. */ void DrawNewObjectTile(TileInfo *ti, const ObjectSpec *spec) { ResolverObject object; Object *o = Object::GetByTile(ti->tile); NewObjectResolver(&object, spec, o, ti->tile); const SpriteGroup *group = SpriteGroup::Resolve(GetObjectSpriteGroup(spec, o), &object); if (group == NULL || group->type != SGT_TILELAYOUT) return; DrawTileLayout(ti, (const TileLayoutSpriteGroup *)group, spec); } /** * Draw representation of an object (tile) for GUI purposes. * @param x Position x of image. * @param y Position y of image. * @param spec Object spec to draw. * @param view The object's view. */ void DrawNewObjectTileInGUI(int x, int y, const ObjectSpec *spec, uint8 view) { ResolverObject object; NewObjectResolver(&object, spec, NULL, INVALID_TILE, view); const SpriteGroup *group = SpriteGroup::Resolve(GetObjectSpriteGroup(spec, NULL), &object); if (group == NULL || group->type != SGT_TILELAYOUT) return; const DrawTileSprites *dts = ((const TileLayoutSpriteGroup *)group)->ProcessRegisters(NULL); PaletteID palette; if (Company::IsValidID(_local_company)) { /* Get the colours of our company! */ if (spec->flags & OBJECT_FLAG_2CC_COLOUR) { const Livery *l = Company::Get(_local_company)->livery; palette = SPR_2CCMAP_BASE + l->colour1 + l->colour2 * 16; } else { palette = COMPANY_SPRITE_COLOUR(_local_company); } } else { /* There's no company, so just take the base palette. */ palette = (spec->flags & OBJECT_FLAG_2CC_COLOUR) ? SPR_2CCMAP_BASE : PALETTE_RECOLOUR_START; } SpriteID image = dts->ground.sprite; PaletteID pal = dts->ground.pal; if (GB(image, 0, SPRITE_WIDTH) != 0) { DrawSprite(image, GroundSpritePaletteTransform(image, pal, palette), x, y); } DrawNewGRFTileSeqInGUI(x, y, dts, 0, palette); } /** * Perform a callback for an object. * @param callback The callback to perform. * @param param1 The first parameter to pass to the NewGRF. * @param param2 The second parameter to pass to the NewGRF. * @param spec The specification of the object / the entry point. * @param o The object to call the callback for. * @param tile The tile the callback is called for. * @param extra_data Ignored. * @return The result of the callback. */ uint16 StubGetObjectCallback(CallbackID callback, uint32 param1, uint32 param2, const ObjectSpec *spec, Object *o, TileIndex tile, int extra_data) { return GetObjectCallback(callback, param1, param2, spec, o, tile); } /** Helper class for animation control. */ struct ObjectAnimationBase : public AnimationBase<ObjectAnimationBase, ObjectSpec, Object, int, StubGetObjectCallback> { static const CallbackID cb_animation_speed = CBID_OBJECT_ANIMATION_SPEED; static const CallbackID cb_animation_next_frame = CBID_OBJECT_ANIMATION_NEXT_FRAME; static const ObjectCallbackMask cbm_animation_speed = CBM_OBJ_ANIMATION_SPEED; static const ObjectCallbackMask cbm_animation_next_frame = CBM_OBJ_ANIMATION_NEXT_FRAME; }; /** * Handle the animation of the object tile. * @param tile The tile to animate. */ void AnimateNewObjectTile(TileIndex tile) { const ObjectSpec *spec = ObjectSpec::GetByTile(tile); if (spec == NULL || !(spec->flags & OBJECT_FLAG_ANIMATION)) return; ObjectAnimationBase::AnimateTile(spec, Object::GetByTile(tile), tile, (spec->flags & OBJECT_FLAG_ANIM_RANDOM_BITS) != 0); } /** * Trigger the update of animation on a single tile. * @param o The object that got triggered. * @param tile The location of the triggered tile. * @param trigger The trigger that is triggered. * @param spec The spec associated with the object. */ void TriggerObjectTileAnimation(Object *o, TileIndex tile, ObjectAnimationTrigger trigger, const ObjectSpec *spec) { if (!HasBit(spec->animation.triggers, trigger)) return; ObjectAnimationBase::ChangeAnimationFrame(CBID_OBJECT_ANIMATION_START_STOP, spec, o, tile, Random(), trigger); } /** * Trigger the update of animation on a whole object. * @param o The object that got triggered. * @param trigger The trigger that is triggered. * @param spec The spec associated with the object. */ void TriggerObjectAnimation(Object *o, ObjectAnimationTrigger trigger, const ObjectSpec *spec) { if (!HasBit(spec->animation.triggers, trigger)) return; TILE_AREA_LOOP(tile, o->location) { TriggerObjectTileAnimation(o, tile, trigger, spec); } } /** * Resolve an object's spec and such so we can get a variable. * @param ro The resolver object to fill. * @param index The object tile to get the data from. */ void GetObjectResolver(ResolverObject *ro, uint index) { NewObjectResolver(ro, ObjectSpec::GetByTile(index), Object::GetByTile(index), index); }