1

/* $Id$ */

     2

     3

/** @file newgrf_house.cpp Implementation of NewGRF houses. */

     4

     5

#include "stdafx.h"

     6

#include "openttd.h"

     7

#include "variables.h"

     8

#include "debug.h"

     9

#include "viewport_func.h"

    10

#include "landscape.h"

    11

#include "town.h"

    12

#include "town_map.h"

    13

#include "sprite.h"

    14

#include "newgrf.h"

    15

#include "newgrf_house.h"

    16

#include "newgrf_spritegroup.h"

    17

#include "newgrf_callbacks.h"

    18

#include "newgrf_town.h"

    19

#include "newgrf_sound.h"

    20

#include "newgrf_commons.h"

    21

#include "transparency.h"

    22

#include "functions.h"

    23

#include "player_func.h"

    24

#include "animated_tile_func.h"

    25

#include "date_func.h"

    26

    27

#include "table/strings.h"

    28

#include "table/sprites.h"

    29

#include "table/town_land.h"

    30

    31

static BuildingCounts    _building_counts;

    32

static HouseClassMapping _class_mapping[HOUSE_CLASS_MAX];

    33

    34

HouseOverrideManager _house_mngr(NEW_HOUSE_OFFSET, HOUSE_MAX, INVALID_HOUSE_ID);

    35

    36

/**

    37

 * Check and update town and house values.

    38

 *

    39

 * Checked are the HouseIDs. Updated are the

    40

 * town population the number of houses per

    41

 * town, the town radius and the max passengers

    42

 * of the town.

    43

 */

    44

void UpdateHousesAndTowns()

    45

{

    46

	Town *town;

    47

	InitializeBuildingCounts();

    48

    49

	/* Reset town population and num_houses */

    50

	FOR_ALL_TOWNS(town) {

    51

		town->population = 0;

    52

		town->num_houses = 0;

    53

	}

    54

    55

	for (TileIndex t = 0; t < MapSize(); t++) {

    56

		HouseID house_id;

    57

    58

		if (!IsTileType(t, MP_HOUSE)) continue;

    59

    60

		house_id = GetHouseType(t);

    61

		if (!GetHouseSpecs(house_id)->enabled && house_id >= NEW_HOUSE_OFFSET) {

    62

			/* The specs for this type of house are not available any more, so

    63

			 * replace it with the substitute original house type. */

    64

			house_id = _house_mngr.GetSubstituteID(house_id);

    65

			SetHouseType(t, house_id);

    66

		}

    67

    68

		town = GetTownByTile(t);

    69

		IncreaseBuildingCount(town, house_id);

    70

		if (IsHouseCompleted(t)) town->population += GetHouseSpecs(house_id)->population;

    71

    72

		/* Increase the number of houses for every house tile which

    73

		 * has a size bit set. Multi tile buildings have got only

    74

		 * one tile with such a bit set, so there is no problem. */

    75

		if (GetHouseSpecs(GetHouseType(t))->building_flags & BUILDING_HAS_1_TILE) {

    76

			town->num_houses++;

    77

		}

    78

	}

    79

    80

	/* Update the population and num_house dependant values */

    81

	FOR_ALL_TOWNS(town) {

    82

		UpdateTownRadius(town);

    83

		UpdateTownMaxPass(town);

    84

	}

    85

}

    86

    87

HouseClassID AllocateHouseClassID(byte grf_class_id, uint32 grfid)

    88

{

    89

	/* Start from 1 because 0 means that no class has been assigned. */

    90

	for (int i = 1; i != lengthof(_class_mapping); i++) {

    91

		HouseClassMapping *map = &_class_mapping[i];

    92

    93

		if (map->class_id == grf_class_id && map->grfid == grfid) return (HouseClassID)i;

    94

    95

		if (map->class_id == 0 && map->grfid == 0) {

    96

			map->class_id = grf_class_id;

    97

			map->grfid    = grfid;

    98

			return (HouseClassID)i;

    99

		}

   100

	}

   101

	return HOUSE_NO_CLASS;

   102

}

   103

   104

void InitializeBuildingCounts()

   105

{

   106

	memset(&_building_counts, 0, sizeof(_building_counts));

   107

}

   108

   109

/**

   110

 * IncreaseBuildingCount()

   111

 * Increase the count of a building when it has been added by a town.

   112

 * @param t The town that the building is being built in

   113

 * @param house_id The id of the house being added

   114

 */

   115

void IncreaseBuildingCount(Town *t, HouseID house_id)

   116

{

   117

	HouseClassID class_id = GetHouseSpecs(house_id)->class_id;

   118

   119

	if (!_loaded_newgrf_features.has_newhouses) return;

   120

   121

	/* If there are 255 buildings of this type in this town, there are also

   122

	 * at least that many houses of the same class in the town, and

   123

	 * therefore on the map as well. */

   124

	if (t->building_counts.id_count[house_id] == 255) return;

   125

   126

	t->building_counts.id_count[house_id]++;

   127

	if (_building_counts.id_count[house_id] < 255) _building_counts.id_count[house_id]++;

   128

   129

	/* Similarly, if there are 255 houses of this class in this town, there

   130

	 * must be at least that number on the map too. */

   131

	if (class_id == HOUSE_NO_CLASS || t->building_counts.class_count[class_id] == 255) return;

   132

   133

	t->building_counts.class_count[class_id]++;

   134

	if (_building_counts.class_count[class_id] < 255) _building_counts.class_count[class_id]++;

   135

}

   136

   137

/**

   138

 * DecreaseBuildingCount()

   139

 * Decrease the number of a building when it is deleted.

   140

 * @param t The town that the building was built in

   141

 * @param house_id The id of the house being removed

   142

 */

   143

void DecreaseBuildingCount(Town *t, HouseID house_id)

   144

{

   145

	HouseClassID class_id = GetHouseSpecs(house_id)->class_id;

   146

   147

	if (!_loaded_newgrf_features.has_newhouses) return;

   148

   149

	if (t->building_counts.id_count[house_id] > 0) t->building_counts.id_count[house_id]--;

   150

	if (_building_counts.id_count[house_id] > 0)   _building_counts.id_count[house_id]--;

   151

   152

	if (class_id == HOUSE_NO_CLASS) return;

   153

   154

	if (t->building_counts.class_count[class_id] > 0) t->building_counts.class_count[class_id]--;

   155

	if (_building_counts.class_count[class_id] > 0)   _building_counts.class_count[class_id]--;

   156

}

   157

   158

static uint32 HouseGetRandomBits(const ResolverObject *object)

   159

{

   160

	const TileIndex tile = object->u.house.tile;

   161

	return (tile == INVALID_TILE || !IsTileType(tile, MP_HOUSE)) ? 0 : GetHouseRandomBits(tile);

   162

}

   163

   164

static uint32 HouseGetTriggers(const ResolverObject *object)

   165

{

   166

	const TileIndex tile = object->u.house.tile;

   167

	return (tile == INVALID_TILE || !IsTileType(tile, MP_HOUSE)) ? 0 : GetHouseTriggers(tile);

   168

}

   169

   170

static void HouseSetTriggers(const ResolverObject *object, int triggers)

   171

{

   172

	const TileIndex tile = object->u.house.tile;

   173

	if (IsTileType(tile, MP_HOUSE)) SetHouseTriggers(tile, triggers);

   174

}

   175

   176

static uint32 GetNumHouses(HouseID house_id, const Town *town)

   177

{

   178

	uint8 map_id_count, town_id_count, map_class_count, town_class_count;

   179

	HouseClassID class_id = GetHouseSpecs(house_id)->class_id;

   180

   181

	map_id_count     = _building_counts.id_count[house_id];

   182

	map_class_count  = _building_counts.class_count[class_id];

   183

	town_id_count    = town->building_counts.id_count[house_id];

   184

	town_class_count = town->building_counts.class_count[class_id];

   185

   186

	return map_class_count << 24 | town_class_count << 16 | map_id_count << 8 | town_id_count;

   187

}

   188

   189

static uint32 GetGRFParameter(HouseID house_id, byte parameter)

   190

{

   191

	const HouseSpec *hs = GetHouseSpecs(house_id);

   192

	const GRFFile *file = hs->grffile;

   193

   194

	if (parameter >= file->param_end) return 0;

   195

	return file->param[parameter];

   196

}

   197

   198

uint32 GetNearbyTileInformation(byte parameter, TileIndex tile)

   199

{

   200

	tile = GetNearbyTile(parameter, tile);

   201

	return GetNearbyTileInformation(tile);

   202

}

   203

   204

/**

   205

 * HouseGetVariable():

   206

 *

   207

 * Used by the resolver to get values for feature 07 deterministic spritegroups.

   208

 */

   209

static uint32 HouseGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)

   210

{

   211

	const Town *town = object->u.house.town;

   212

	TileIndex tile   = object->u.house.tile;

   213

	HouseID house_id = object->u.house.house_id;

   214

   215

	if (object->scope == VSG_SCOPE_PARENT) {

   216

		return TownGetVariable(variable, parameter, available, town);

   217

	}

   218

   219

	switch (variable) {

   220

		/* Construction stage. */

   221

		case 0x40: return (IsTileType(tile, MP_HOUSE) ? GetHouseBuildingStage(tile) : 0) | TileHash2Bit(TileX(tile), TileY(tile)) << 2;

   222

   223

		/* Building age. */

   224

		case 0x41: return Clamp(_cur_year - GetHouseConstructionYear(tile), 0, 0xFF);

   225

   226

		/* Town zone */

   227

		case 0x42: return GetTownRadiusGroup(town, tile);

   228

   229

		/* Terrain type */

   230

		case 0x43: return GetTerrainType(tile);

   231

   232

		/* Number of this type of building on the map. */

   233

		case 0x44: return GetNumHouses(house_id, town);

   234

   235

		/* Whether the town is being created or just expanded. */

   236

		case 0x45: return _generating_world ? 1 : 0;

   237

   238

		/* Current animation frame. */

   239

		case 0x46: return IsTileType(tile, MP_HOUSE) ? GetHouseAnimationFrame(tile) : 0;

   240

   241

   242

		/* Building counts for old houses with id = parameter. */

   243

		case 0x60: return GetNumHouses(parameter, town);

   244

   245

		/* Building counts for new houses with id = parameter. */

   246

		case 0x61: {

   247

			const HouseSpec *hs = GetHouseSpecs(house_id);

   248

			if (hs->grffile == NULL) return 0;

   249

   250

			HouseID new_house = _house_mngr.GetID(parameter, hs->grffile->grfid);

   251

			return new_house == INVALID_HOUSE_ID ? 0 : GetNumHouses(new_house, town);

   252

		}

   253

   254

		/* Land info for nearby tiles. */

   255

		case 0x62: return GetNearbyTileInformation(parameter, tile);

   256

   263

		/* Read GRF parameter */

   264

		case 0x7F: return GetGRFParameter(object->u.house.house_id, parameter);

   265

	}

   266

   267

	DEBUG(grf, 1, "Unhandled house property 0x%X", variable);

   268

   269

	*available = false;

   270

	return UINT_MAX;

   271

}

   272

   273

static const SpriteGroup *HouseResolveReal(const ResolverObject *object, const SpriteGroup *group)

   274

{

   275

	/* Houses do not have 'real' groups */

   276

	return NULL;

   277

}

   278

   279

/**

   280

 * NewHouseResolver():

   281

 *

   282

 * Returns a resolver object to be used with feature 07 spritegroups.

   283

 */

   284

static void NewHouseResolver(ResolverObject *res, HouseID house_id, TileIndex tile, Town *town)

   285

{

   286

	res->GetRandomBits = HouseGetRandomBits;

   287

	res->GetTriggers   = HouseGetTriggers;

   288

	res->SetTriggers   = HouseSetTriggers;

   289

	res->GetVariable   = HouseGetVariable;

   290

	res->ResolveReal   = HouseResolveReal;

   291

   292

	res->u.house.tile     = tile;

   293

	res->u.house.town     = town;

   294

	res->u.house.house_id = house_id;

   295

   296

	res->callback        = CBID_NO_CALLBACK;

   297

	res->callback_param1 = 0;

   298

	res->callback_param2 = 0;

   299

	res->last_value      = 0;

   300

	res->trigger         = 0;

   301

	res->reseed          = 0;

   302

	res->count           = 0;

   303

}

   304

   305

uint16 GetHouseCallback(CallbackID callback, uint32 param1, uint32 param2, HouseID house_id, Town *town, TileIndex tile)

   306

{

   307

	ResolverObject object;

   308

	const SpriteGroup *group;

   309

   310

	NewHouseResolver(&object, house_id, tile, town);

   311

	object.callback = callback;

   312

	object.callback_param1 = param1;

   313

	object.callback_param2 = param2;

   314

   315

	group = Resolve(GetHouseSpecs(house_id)->spritegroup, &object);

   316

	if (group == NULL || group->type != SGT_CALLBACK) return CALLBACK_FAILED;

   317

   318

	return group->g.callback.result;

   319

}

   320

   321

void DrawTileLayout(const TileInfo *ti, const SpriteGroup *group, byte stage, HouseID house_id)

   322

{

   323

	const DrawTileSprites *dts = group->g.layout.dts;

   324

	const DrawTileSeqStruct *dtss;

   325

   326

	SpriteID image = dts->ground.sprite;

   327

	SpriteID pal   = dts->ground.pal;

   328

   329

	if (IS_CUSTOM_SPRITE(image)) image += stage;

   330

   331

	if (GB(image, 0, SPRITE_WIDTH) != 0) DrawGroundSprite(image, pal);

   332

   333

	/* End now, if houses are invisible */

   334

	if (IsInvisibilitySet(TO_HOUSES)) return;

   335

   336

	foreach_draw_tile_seq(dtss, dts->seq) {

   337

		if (GB(dtss->image.sprite, 0, SPRITE_WIDTH) == 0) continue;

   338

   339

		image = dtss->image.sprite;

   340

		pal   = dtss->image.pal;

   341

   342

		if (IS_CUSTOM_SPRITE(image)) image += stage;

   343

   344

		if ((HasBit(image, SPRITE_MODIFIER_OPAQUE) || !IsTransparencySet(TO_HOUSES)) && HasBit(image, PALETTE_MODIFIER_COLOR)) {

   345

			if (pal == 0) {

   346

				const HouseSpec *hs = GetHouseSpecs(house_id);

   347

				if (HasBit(hs->callback_mask, CBM_HOUSE_COLOUR)) {

   348

					uint16 callback = GetHouseCallback(CBID_HOUSE_COLOUR, 0, 0, house_id, GetTownByTile(ti->tile), ti->tile);

   349

					if (callback != CALLBACK_FAILED) {

   350

						/* If bit 14 is set, we should use a 2cc colour map, else use the callback value. */

   351

						pal = HasBit(callback, 14) ? GB(callback, 0, 8) + SPR_2CCMAP_BASE : callback;

   352

					}

   353

				} else {

   354

					pal = hs->random_colour[TileHash2Bit(ti->x, ti->y)] + PALETTE_RECOLOR_START;

   355

				}

   356

			}

   357

		} else {

   358

			pal = PAL_NONE;

   359

		}

   360

   361

		if ((byte)dtss->delta_z != 0x80) {

   362

			AddSortableSpriteToDraw(

   363

				image, pal,

   364

				ti->x + dtss->delta_x, ti->y + dtss->delta_y,

   365

				dtss->size_x, dtss->size_y,

   366

				dtss->size_z, ti->z + dtss->delta_z,

   367

				IsTransparencySet(TO_HOUSES)

   368

			);

   369

		} else {

   370

			AddChildSpriteScreen(image, pal, (byte)dtss->delta_x, (byte)dtss->delta_y, IsTransparencySet(TO_HOUSES));

   371

		}

   372

	}

   373

}

   374

   375

void DrawNewHouseTile(TileInfo *ti, HouseID house_id)

   376

{

   377

	const HouseSpec *hs = GetHouseSpecs(house_id);

   378

	const SpriteGroup *group;

   379

	ResolverObject object;

   380

   381

	if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, FOUNDATION_LEVELED);

   382

   383

	NewHouseResolver(&object, house_id, ti->tile, GetTownByTile(ti->tile));

   384

   385

	group = Resolve(hs->spritegroup, &object);

   386

	if (group == NULL || group->type != SGT_TILELAYOUT) {

   387

		/* XXX: This is for debugging purposes really, and shouldn't stay. */

   388

		DrawGroundSprite(SPR_SHADOW_CELL, PAL_NONE);

   389

	} else {

   390

		/* Limit the building stage to the number of stages supplied. */

   391

		byte stage = GetHouseBuildingStage(ti->tile);

   392

		stage = Clamp(stage - 4 + group->g.layout.num_sprites, 0, group->g.layout.num_sprites - 1);

   393

		DrawTileLayout(ti, group, stage, house_id);

   394

	}

   395

}

   396

   397

void AnimateNewHouseTile(TileIndex tile)

   398

{

   399

	const HouseSpec *hs = GetHouseSpecs(GetHouseType(tile));

   400

	byte animation_speed = hs->animation_speed;

   401

	bool frame_set_by_callback = false;

   402

   403

	if (HasBit(hs->callback_mask, CBM_HOUSE_ANIMATION_SPEED)) {

   404

		uint16 callback_res = GetHouseCallback(CBID_HOUSE_ANIMATION_SPEED, 0, 0, GetHouseType(tile), GetTownByTile(tile), tile);

   405

		if (callback_res != CALLBACK_FAILED) animation_speed = Clamp(callback_res & 0xFF, 2, 16);

   406

	}

   407

   408

	/* An animation speed of 2 means the animation frame changes 4 ticks, and

   409

	 * increasing this value by one doubles the wait. 2 is the minimum value

   410

	 * allowed for animation_speed, which corresponds to 120ms, and 16 is the

   411

	 * maximum, corresponding to around 33 minutes. */

   412

	if (_tick_counter % (1 << animation_speed) != 0) return;

   413

   414

	byte frame      = GetHouseAnimationFrame(tile);

   415

	byte num_frames = GB(hs->animation_frames, 0, 7);

   416

   417

	if (HasBit(hs->callback_mask, CBM_HOUSE_ANIMATION_NEXT_FRAME)) {

   418

		uint32 param = (hs->extra_flags & CALLBACK_1A_RANDOM_BITS) ? Random() : 0;

   419

		uint16 callback_res = GetHouseCallback(CBID_HOUSE_ANIMATION_NEXT_FRAME, param, 0, GetHouseType(tile), GetTownByTile(tile), tile);

   420

   421

		if (callback_res != CALLBACK_FAILED) {

   422

			frame_set_by_callback = true;

   423

   424

			switch (callback_res & 0xFF) {

   425

				case 0xFF:

   426

					DeleteAnimatedTile(tile);

   427

					break;

   428

				case 0xFE:

   429

					/* Carry on as normal. */

   430

					frame_set_by_callback = false;

   431

					break;

   432

				default:

   433

					frame = callback_res & 0xFF;

   434

					break;

   435

			}

   436

   437

			/* If the lower 7 bits of the upper byte of the callback

   438

			 * result are not empty, it is a sound effect. */

   439

			if (GB(callback_res, 8, 7) != 0) PlayTileSound(hs->grffile, GB(callback_res, 8, 7), tile);

   440

		}

   441

	}

   442

   443

	if (!frame_set_by_callback) {

   444

		if (frame < num_frames) {

   445

			frame++;

   446

		} else if (frame == num_frames && HasBit(hs->animation_frames, 7)) {

   447

			/* This animation loops, so start again from the beginning */

   448

			frame = 0;

   449

		} else {

   450

			/* This animation doesn't loop, so stay here */

   451

			DeleteAnimatedTile(tile);

   452

		}

   453

	}

   454

   455

	SetHouseAnimationFrame(tile, frame);

   456

	MarkTileDirtyByTile(tile);

   457

}

   458

   459

void ChangeHouseAnimationFrame(const GRFFile *file, TileIndex tile, uint16 callback_result)

   460

{

   461

	switch (callback_result & 0xFF) {

   462

		case 0xFD: /* Do nothing. */         break;

   463

		case 0xFE: AddAnimatedTile(tile);    break;

   464

		case 0xFF: DeleteAnimatedTile(tile); break;

   465

		default:

   466

			SetHouseAnimationFrame(tile, callback_result & 0xFF);

   467

			AddAnimatedTile(tile);

   468

			break;

   469

	}

   470

	/* If the lower 7 bits of the upper byte of the callback

   471

	 * result are not empty, it is a sound effect. */

   472

	if (GB(callback_result, 8, 7) != 0) PlayTileSound(file, GB(callback_result, 8, 7), tile);

   473

}

   474

   475

bool CanDeleteHouse(TileIndex tile)

   476

{

   477

	const HouseSpec *hs = GetHouseSpecs(GetHouseType(tile));

   478

   479

	/* Human players are always allowed to remove buildings, as is water and

   480

	 * anyone using the scenario editor. */

   481

	if ((IsValidPlayer(_current_player) && IsHumanPlayer(_current_player))

   482

			|| _current_player == OWNER_WATER || _current_player == OWNER_NONE) return true;

   483

   484

	if (HasBit(hs->callback_mask, CBM_HOUSE_DENY_DESTRUCTION)) {

   485

		uint16 callback_res = GetHouseCallback(CBID_HOUSE_DENY_DESTRUCTION, 0, 0, GetHouseType(tile), GetTownByTile(tile), tile);

   486

		return (callback_res == CALLBACK_FAILED || callback_res == 0);

   487

	} else {

   488

		return !(hs->extra_flags & BUILDING_IS_PROTECTED);

   489

	}

   490

}

   491

   492

static void AnimationControl(TileIndex tile, uint16 random_bits)

   493

{

   494

	const HouseSpec *hs = GetHouseSpecs(GetHouseType(tile));

   495

   496

	if (HasBit(hs->callback_mask, CBM_HOUSE_ANIMATION_START_STOP)) {

   497

		uint32 param = (hs->extra_flags & SYNCHRONISED_CALLBACK_1B) ? (GB(Random(), 0, 16) | random_bits << 16) : Random();

   498

		uint16 callback_res = GetHouseCallback(CBID_HOUSE_ANIMATION_START_STOP, param, 0, GetHouseType(tile), GetTownByTile(tile), tile);

   499

   500

		if (callback_res != CALLBACK_FAILED) ChangeHouseAnimationFrame(hs->grffile, tile, callback_res);

   501

	}

   502

}

   503

   504

bool NewHouseTileLoop(TileIndex tile)

   505

{

   506

	const HouseSpec *hs = GetHouseSpecs(GetHouseType(tile));

   507

   508

	if (GetHouseProcessingTime(tile) > 0) {

   509

		DecHouseProcessingTime(tile);

   510

		return true;

   511

	}

   512

   513

	TriggerHouse(tile, HOUSE_TRIGGER_TILE_LOOP);

   514

	TriggerHouse(tile, HOUSE_TRIGGER_TILE_LOOP_TOP);

   515