src/newgrf_industrytiles.cpp

   1 /* $Id$ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * 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.
   6  * 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.
   7  * 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/>.
   8  */
   9
  10 /** @file newgrf_industrytiles.cpp NewGRF handling of industry tiles. */
  11
  12 #include "stdafx.h"
  13 #include "debug.h"
  14 #include "landscape.h"
  15 #include "newgrf_industrytiles.h"
  16 #include "newgrf_sound.h"
  17 #include "industry.h"
  18 #include "town.h"
  19 #include "command_func.h"
  20 #include "water.h"
  21 #include "newgrf_animation_base.h"
  22
  23 #include "table/strings.h"
  24
  25 #include "safeguards.h"
  26
  27 /**
  28  * Based on newhouses equivalent, but adapted for newindustries
  29  * @param parameter from callback.  It's in fact a pair of coordinates
  30  * @param tile TileIndex from which the callback was initiated
  31  * @param index of the industry been queried for
  32  * @param signed_offsets Are the x and y offset encoded in parameter signed?
  33  * @param grf_version8 True, if we are dealing with a new NewGRF which uses GRF version >= 8.
  34  * @return a construction of bits obeying the newgrf format
  35  */
  36 uint32 GetNearbyIndustryTileInformation(byte parameter, TileIndex tile, IndustryID index, bool signed_offsets, bool grf_version8)
  37 {
  38         if (parameter != 0) tile = GetNearbyTile(parameter, tile, signed_offsets); // only perform if it is required
  39         bool is_same_industry = (IsTileType(tile, MP_INDUSTRY) && GetIndustryIndex(tile) == index);
  40
  41         return GetNearbyTileInformation(tile, grf_version8) | (is_same_industry ? 1 : 0) << 8;
  42 }
  43
  44 /**
  45  * This is the position of the tile relative to the northernmost tile of the industry.
  46  * Format: 00yxYYXX
  47  * Variable  Content
  48  * x         the x offset from the northernmost tile
  49  * XX        same, but stored in a byte instead of a nibble
  50  * y         the y offset from the northernmost tile
  51  * YY        same, but stored in a byte instead of a nibble
  52  * @param tile TileIndex of the tile to evaluate
  53  * @param ind_tile northernmost tile of the industry
  54  */
  55 uint32 GetRelativePosition(TileIndex tile, TileIndex ind_tile)
  56 {
  57         byte x = TileX(tile) - TileX(ind_tile);
  58         byte y = TileY(tile) - TileY(ind_tile);
  59
  60         return ((y & 0xF) << 20) | ((x & 0xF) << 16) | (y << 8) | x;
  61 }
  62
  63 /* virtual */ uint32 IndustryTileScopeResolver::GetVariable(byte variable, uint32 parameter, bool *available) const
  64 {
  65         switch (variable) {
  66                 /* Construction state of the tile: a value between 0 and 3 */
  67                 case 0x40: return (IsTileType(this->tile, MP_INDUSTRY)) ? GetIndustryConstructionStage(this->tile) : 0;
  68
  69                 /* Terrain type */
  70                 case 0x41: return GetTerrainType(this->tile);
  71
  72                 /* Current town zone of the tile in the nearest town */
  73                 case 0x42: return GetTownRadiusGroup(ClosestTownFromTile(this->tile, UINT_MAX), this->tile);
  74
  75                 /* Relative position */
  76                 case 0x43: return GetRelativePosition(this->tile, this->industry->location.tile);
  77
  78                 /* Animation frame. Like house variable 46 but can contain anything 0..FF. */
  79                 case 0x44: return IsTileType(this->tile, MP_INDUSTRY) ? GetAnimationFrame(this->tile) : 0;
  80
  81                 /* Land info of nearby tiles */
  82                 case 0x60: return GetNearbyIndustryTileInformation(parameter, this->tile,
  83                                 this->industry == NULL ? (IndustryID)INVALID_INDUSTRY : this->industry->index, true, this->ro.grffile->grf_version >= 8);
  84
  85                 /* Animation stage of nearby tiles */
  86                 case 0x61: {
  87                         TileIndex tile = GetNearbyTile(parameter, this->tile);
  88                         if (IsTileType(tile, MP_INDUSTRY) && Industry::GetByTile(tile) == this->industry) {
  89                                 return GetAnimationFrame(tile);
  90                         }
  91                         return UINT_MAX;
  92                 }
  93
  94                 /* Get industry tile ID at offset */
  95                 case 0x62: return GetIndustryIDAtOffset(GetNearbyTile(parameter, this->tile), this->industry, this->ro.grffile->grfid);
  96         }
  97
  98         DEBUG(grf, 1, "Unhandled industry tile variable 0x%X", variable);
  99
 100         *available = false;
 101         return UINT_MAX;
 102 }
 103
 104 /* virtual */ uint32 IndustryTileScopeResolver::GetRandomBits() const
 105 {
 106         assert(this->industry != NULL && IsValidTile(this->tile));
 107         assert(this->industry->index == INVALID_INDUSTRY || IsTileType(this->tile, MP_INDUSTRY));
 108
 109         return (this->industry->index != INVALID_INDUSTRY) ? GetIndustryRandomBits(this->tile) : 0;
 110 }
 111
 112 /* virtual */ uint32 IndustryTileScopeResolver::GetTriggers() const
 113 {
 114         assert(this->industry != NULL && IsValidTile(this->tile));
 115         assert(this->industry->index == INVALID_INDUSTRY || IsTileType(this->tile, MP_INDUSTRY));
 116         if (this->industry->index == INVALID_INDUSTRY) return 0;
 117         return GetIndustryTriggers(this->tile);
 118 }
 119
 120 /* virtual */ void IndustryTileScopeResolver::SetTriggers(int triggers) const
 121 {
 122         assert(this->industry != NULL && this->industry->index != INVALID_INDUSTRY && IsValidTile(this->tile) && IsTileType(this->tile, MP_INDUSTRY));
 123         SetIndustryTriggers(this->tile, triggers);
 124 }
 125
 126 /**
 127  * Get the associated NewGRF file from the industry graphics.
 128  * @param gfx Graphics to query.
 129  * @return Grf file associated with the graphics, if any.
 130  */
 131 static const GRFFile *GetIndTileGrffile(IndustryGfx gfx)
 132 {
 133         const IndustryTileSpec *its = GetIndustryTileSpec(gfx);
 134         return (its != NULL) ? its->grf_prop.grffile : NULL;
 135 }
 136
 137 /**
 138  * Constructor of the industry tiles scope resolver.
 139  * @param gfx Graphics of the industry.
 140  * @param tile %Tile of the industry.
 141  * @param indus %Industry owning the tile.
 142  * @param callback Callback ID.
 143  * @param callback_param1 First parameter (var 10) of the callback.
 144  * @param callback_param2 Second parameter (var 18) of the callback.
 145  */
 146 IndustryTileResolverObject::IndustryTileResolverObject(IndustryGfx gfx, TileIndex tile, Industry *indus,
 147                         CallbackID callback, uint32 callback_param1, uint32 callback_param2)
 148         : ResolverObject(GetIndTileGrffile(gfx), callback, callback_param1, callback_param2),
 149         indtile_scope(*this, indus, tile),
 150         ind_scope(*this, tile, indus, indus->type)
 151 {
 152         this->root_spritegroup = GetIndustryTileSpec(gfx)->grf_prop.spritegroup[0];
 153 }
 154
 155 /**
 156  * Constructor of the scope resolver for the industry tile.
 157  * @param ro Surrounding resolver.
 158  * @param industry %Industry owning the tile.
 159  * @param tile %Tile of the industry.
 160  */
 161 IndustryTileScopeResolver::IndustryTileScopeResolver(ResolverObject &ro, Industry *industry, TileIndex tile) : ScopeResolver(ro)
 162 {
 163         this->industry = industry;
 164         this->tile = tile;
 165 }
 166
 167 static void IndustryDrawTileLayout(const TileInfo *ti, const TileLayoutSpriteGroup *group, byte rnd_colour, byte stage, IndustryGfx gfx)
 168 {
 169         const DrawTileSprites *dts = group->ProcessRegisters(&stage);
 170
 171         SpriteID image = dts->ground.sprite;
 172         PaletteID pal  = dts->ground.pal;
 173
 174         if (HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE)) image += stage;
 175         if (HasBit(pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) pal += stage;
 176
 177         if (GB(image, 0, SPRITE_WIDTH) != 0) {
 178                 /* If the ground sprite is the default flat water sprite, draw also canal/river borders
 179                  * Do not do this if the tile's WaterClass is 'land'. */
 180                 if (image == SPR_FLAT_WATER_TILE && IsTileOnWater(ti->tile)) {
 181                         DrawWaterClassGround(ti);
 182                 } else {
 183                         DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, GENERAL_SPRITE_COLOUR(rnd_colour)));
 184                 }
 185         }
 186
 187         DrawNewGRFTileSeq(ti, dts, TO_INDUSTRIES, stage, GENERAL_SPRITE_COLOUR(rnd_colour));
 188 }
 189
 190 uint16 GetIndustryTileCallback(CallbackID callback, uint32 param1, uint32 param2, IndustryGfx gfx_id, Industry *industry, TileIndex tile)
 191 {
 192         assert(industry != NULL && IsValidTile(tile));
 193         assert(industry->index == INVALID_INDUSTRY || IsTileType(tile, MP_INDUSTRY));
 194
 195         IndustryTileResolverObject object(gfx_id, tile, industry, callback, param1, param2);
 196         return object.ResolveCallback();
 197 }
 198
 199 bool DrawNewIndustryTile(TileInfo *ti, Industry *i, IndustryGfx gfx, const IndustryTileSpec *inds)
 200 {
 201         if (ti->tileh != SLOPE_FLAT) {
 202                 bool draw_old_one = true;
 203                 if (HasBit(inds->callback_mask, CBM_INDT_DRAW_FOUNDATIONS)) {
 204                         /* Called to determine the type (if any) of foundation to draw for industry tile */
 205                         uint32 callback_res = GetIndustryTileCallback(CBID_INDTILE_DRAW_FOUNDATIONS, 0, 0, gfx, i, ti->tile);
 206                         if (callback_res != CALLBACK_FAILED) draw_old_one = ConvertBooleanCallback(inds->grf_prop.grffile, CBID_INDTILE_DRAW_FOUNDATIONS, callback_res);
 207                 }
 208
 209                 if (draw_old_one) DrawFoundation(ti, FOUNDATION_LEVELED);
 210         }
 211
 212         IndustryTileResolverObject object(gfx, ti->tile, i);
 213
 214         const SpriteGroup *group = object.Resolve();
 215         if (group == NULL || group->type != SGT_TILELAYOUT) return false;
 216
 217         /* Limit the building stage to the number of stages supplied. */
 218         const TileLayoutSpriteGroup *tlgroup = (const TileLayoutSpriteGroup *)group;
 219         byte stage = GetIndustryConstructionStage(ti->tile);
 220         IndustryDrawTileLayout(ti, tlgroup, i->random_colour, stage, gfx);
 221         return true;
 222 }
 223
 224 extern bool IsSlopeRefused(Slope current, Slope refused);
 225
 226 /**
 227  * Check the slope of a tile of a new industry.
 228  * @param ind_base_tile Base tile of the industry.
 229  * @param ind_tile      Tile to check.
 230  * @param its           Tile specification.
 231  * @param type          Industry type.
 232  * @param gfx           Gfx of the tile.
 233  * @param itspec_index  Layout.
 234  * @param initial_random_bits Random bits of industry after construction
 235  * @param founder       Industry founder
 236  * @param creation_type The circumstances the industry is created under.
 237  * @return Succeeded or failed command.
 238  */
 239 CommandCost PerformIndustryTileSlopeCheck(TileIndex ind_base_tile, TileIndex ind_tile, const IndustryTileSpec *its, IndustryType type, IndustryGfx gfx, uint itspec_index, uint16 initial_random_bits, Owner founder, IndustryAvailabilityCallType creation_type)
 240 {
 241         Industry ind;
 242         ind.index = INVALID_INDUSTRY;
 243         ind.location.tile = ind_base_tile;
 244         ind.location.w = 0;
 245         ind.type = type;
 246         ind.random = initial_random_bits;
 247         ind.founder = founder;
 248
 249         uint16 callback_res = GetIndustryTileCallback(CBID_INDTILE_SHAPE_CHECK, 0, creation_type << 8 | itspec_index, gfx, &ind, ind_tile);
 250         if (callback_res == CALLBACK_FAILED) {
 251                 if (!IsSlopeRefused(GetTileSlope(ind_tile), its->slopes_refused)) return CommandCost();
 252                 return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
 253         }
 254         if (its->grf_prop.grffile->grf_version < 7) {
 255                 if (callback_res != 0) return CommandCost();
 256                 return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
 257         }
 258
 259         return GetErrorMessageFromLocationCallbackResult(callback_res, its->grf_prop.grffile, STR_ERROR_SITE_UNSUITABLE);
 260 }
 261
 262 /* Simple wrapper for GetHouseCallback to keep the animation unified. */
 263 uint16 GetSimpleIndustryCallback(CallbackID callback, uint32 param1, uint32 param2, const IndustryTileSpec *spec, Industry *ind, TileIndex tile, int extra_data)
 264 {
 265         return GetIndustryTileCallback(callback, param1, param2, spec - GetIndustryTileSpec(0), ind, tile);
 266 }
 267
 268 /** Helper class for animation control. */
 269 struct IndustryAnimationBase : public AnimationBase<IndustryAnimationBase, IndustryTileSpec, Industry, int, GetSimpleIndustryCallback> {
 270         static const CallbackID cb_animation_speed      = CBID_INDTILE_ANIMATION_SPEED;
 271         static const CallbackID cb_animation_next_frame = CBID_INDTILE_ANIM_NEXT_FRAME;
 272
 273         static const IndustryTileCallbackMask cbm_animation_speed      = CBM_INDT_ANIM_SPEED;
 274         static const IndustryTileCallbackMask cbm_animation_next_frame = CBM_INDT_ANIM_NEXT_FRAME;
 275 };
 276
 277 void AnimateNewIndustryTile(TileIndex tile)
 278 {
 279         const IndustryTileSpec *itspec = GetIndustryTileSpec(GetIndustryGfx(tile));
 280         if (itspec == NULL) return;
 281
 282         IndustryAnimationBase::AnimateTile(itspec, Industry::GetByTile(tile), tile, (itspec->special_flags & INDTILE_SPECIAL_NEXTFRAME_RANDOMBITS) != 0);
 283 }
 284
 285 bool StartStopIndustryTileAnimation(TileIndex tile, IndustryAnimationTrigger iat, uint32 random)
 286 {
 287         const IndustryTileSpec *itspec = GetIndustryTileSpec(GetIndustryGfx(tile));
 288
 289         if (!HasBit(itspec->animation.triggers, iat)) return false;
 290
 291         IndustryAnimationBase::ChangeAnimationFrame(CBID_INDTILE_ANIM_START_STOP, itspec, Industry::GetByTile(tile), tile, random, iat);
 292         return true;
 293 }
 294
 295 bool StartStopIndustryTileAnimation(const Industry *ind, IndustryAnimationTrigger iat)
 296 {
 297         bool ret = true;
 298         uint32 random = Random();
 299         TILE_AREA_LOOP(tile, ind->location) {
 300                 if (ind->TileBelongsToIndustry(tile)) {
 301                         if (StartStopIndustryTileAnimation(tile, iat, random)) {
 302                                 SB(random, 0, 16, Random());
 303                         } else {
 304                                 ret = false;
 305                         }
 306                 }
 307         }
 308
 309         return ret;
 310 }
 311
 312 /**
 313  * Trigger random triggers for an industry tile and reseed its random bits.
 314  * @param tile Industry tile to trigger.
 315  * @param trigger Trigger to trigger.
 316  * @param ind Industry of the tile.
 317  * @param [in,out] reseed_industry Collects bits to reseed for the industry.
 318  */
 319 static void DoTriggerIndustryTile(TileIndex tile, IndustryTileTrigger trigger, Industry *ind, uint32 &reseed_industry)
 320 {
 321         assert(IsValidTile(tile) && IsTileType(tile, MP_INDUSTRY));
 322
 323         IndustryGfx gfx = GetIndustryGfx(tile);
 324         const IndustryTileSpec *itspec = GetIndustryTileSpec(gfx);
 325
 326         if (itspec->grf_prop.spritegroup[0] == NULL) return;
 327
 328         IndustryTileResolverObject object(gfx, tile, ind, CBID_RANDOM_TRIGGER);
 329         object.trigger = trigger;
 330
 331         const SpriteGroup *group = object.Resolve();
 332         if (group == NULL) return;
 333
 334         byte new_random_bits = Random();
 335         byte random_bits = GetIndustryRandomBits(tile);
 336         random_bits &= ~object.reseed[VSG_SCOPE_SELF];
 337         random_bits |= new_random_bits & object.reseed[VSG_SCOPE_SELF];
 338         SetIndustryRandomBits(tile, random_bits);
 339         MarkTileDirtyByTile(tile);
 340
 341         reseed_industry |= object.reseed[VSG_SCOPE_PARENT];
 342 }
 343
 344 /**
 345  * Reseeds the random bits of an industry.
 346  * @param ind Industry.
 347  * @param reseed Bits to reseed.
 348  */
 349 static void DoReseedIndustry(Industry *ind, uint32 reseed)
 350 {
 351         if (reseed == 0 || ind == NULL) return;
 352
 353         uint16 random_bits = Random();
 354         ind->random &= reseed;
 355         ind->random |= random_bits & reseed;
 356 }
 357
 358 /**
 359  * Trigger a random trigger for a single industry tile.
 360  * @param tile Industry tile to trigger.
 361  * @param trigger Trigger to trigger.
 362  */
 363 void TriggerIndustryTile(TileIndex tile, IndustryTileTrigger trigger)
 364 {
 365         uint32 reseed_industry = 0;
 366         Industry *ind = Industry::GetByTile(tile);
 367         DoTriggerIndustryTile(tile, trigger, ind, reseed_industry);
 368         DoReseedIndustry(ind, reseed_industry);
 369 }
 370
 371 /**
 372  * Trigger a random trigger for all industry tiles.
 373  * @param ind Industry to trigger.
 374  * @param trigger Trigger to trigger.
 375  */
 376 void TriggerIndustry(Industry *ind, IndustryTileTrigger trigger)
 377 {
 378         uint32 reseed_industry = 0;
 379         TILE_AREA_LOOP(tile, ind->location) {
 380                 if (ind->TileBelongsToIndustry(tile)) {
 381                         DoTriggerIndustryTile(tile, trigger, ind, reseed_industry);
 382                 }
 383         }
 384         DoReseedIndustry(ind, reseed_industry);
 385 }
 386