1

/* $Id$ */

     2

     3

/** @file newgrf_house.cpp */

     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

    25

#include "table/strings.h"

    26

#include "table/sprites.h"

    27

#include "table/town_land.h"

    28

    29

static BuildingCounts    _building_counts;

    30

static HouseClassMapping _class_mapping[HOUSE_CLASS_MAX];

    31

    32

HouseOverrideManager _house_mngr(NEW_HOUSE_OFFSET, HOUSE_MAX, INVALID_HOUSE_ID);

    33

    34

/**

    35

 * Check and update town and house values.

    36

 *

    37

 * Checked are the HouseIDs. Updated are the

    38

 * town population the number of houses per

    39

 * town, the town radius and the max passengers

    40

 * of the town.

    41

 */

    42

void UpdateHousesAndTowns()

    43

{

    44

	Town *town;

    45

	InitializeBuildingCounts();

    46

    47

	/* Reset town population and num_houses */

    48

	FOR_ALL_TOWNS(town) {

    49

		town->population = 0;

    50

		town->num_houses = 0;

    51

	}

    52

    53

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

    54

		HouseID house_id;

    55

    56

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

    57

    58

		house_id = GetHouseType(t);

    59

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

    60

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

    61

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

    62

			house_id = _house_mngr.GetSubstituteID(house_id);

    63

			SetHouseType(t, house_id);

    64

		}

    65

    66

		town = GetTownByTile(t);

    67

		IncreaseBuildingCount(town, house_id);

    68

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

    69

    70

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

    71

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

    72

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

    73

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

    74

			town->num_houses++;

    75

		}

    76

	}

    77

    78

	/* Update the population and num_house dependant values */

    79

	FOR_ALL_TOWNS(town) {

    80

		UpdateTownRadius(town);

    81

		UpdateTownMaxPass(town);

    82

	}

    83

}

    84

    85

HouseClassID AllocateHouseClassID(byte grf_class_id, uint32 grfid)

    86

{

    87

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

    88

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

    89

		HouseClassMapping *map = &_class_mapping[i];

    90

    91

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

    92

    93

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

    94

			map->class_id = grf_class_id;

    95

			map->grfid    = grfid;

    96

			return (HouseClassID)i;

    97

		}

    98

	}

    99

	return HOUSE_NO_CLASS;

   100

}

   101

   102

void InitializeBuildingCounts()

   103

{

   104

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

   105

}

   106

   107

/**

   108

 * IncreaseBuildingCount()

   109

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

   110

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

   111

 * @param house_id The id of the house being added

   112

 */

   113

void IncreaseBuildingCount(Town *t, HouseID house_id)

   114

{

   115

	HouseClassID class_id = GetHouseSpecs(house_id)->class_id;

   116

   117

	if (!_loaded_newgrf_features.has_newhouses) return;

   118

   119

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

   120

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

   121

	 * therefore on the map as well. */

   122

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

   123

   124

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

   125

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

   126

   127

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

   128

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

   129

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

   130

   131

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

   132

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

   133

}

   134

   135

/**

   136

 * DecreaseBuildingCount()

   137

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

   138

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

   139

 * @param house_id The id of the house being removed

   140

 */

   141

void DecreaseBuildingCount(Town *t, HouseID house_id)

   142

{

   143

	HouseClassID class_id = GetHouseSpecs(house_id)->class_id;

   144

   145

	if (!_loaded_newgrf_features.has_newhouses) return;

   146

   147

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

   148

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

   149

   150

	if (class_id == HOUSE_NO_CLASS) return;

   151

   152

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

   153

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

   154

}

   155

   156

static uint32 HouseGetRandomBits(const ResolverObject *object)

   157

{

   158

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

   159

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

   160

}

   161

   162

static uint32 HouseGetTriggers(const ResolverObject *object)

   163

{

   164

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

   165

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

   166

}

   167

   168

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

   169

{

   170

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

   171

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

   172

}

   173

   174

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

   175

{

   176

	uint8 map_id_count, town_id_count, map_class_count, town_class_count;

   177

	HouseClassID class_id = GetHouseSpecs(house_id)->class_id;

   178

   179

	map_id_count     = _building_counts.id_count[house_id];

   180

	map_class_count  = _building_counts.class_count[class_id];

   181

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

   182

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

   183

   184

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

   185

}

   186

   187

static uint32 GetGRFParameter(HouseID house_id, byte parameter)

   188

{

   189

	const HouseSpec *hs = GetHouseSpecs(house_id);

   190

	const GRFFile *file = hs->grffile;

   191

   192

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

   193

	return file->param[parameter];

   194

}

   195

   196

uint32 GetNearbyTileInformation(byte parameter, TileIndex tile)

   197

{

   198

	tile = GetNearbyTile(parameter, tile);

   199

	return GetNearbyTileInformation(tile);

   200

}

   201

   202

/**

   203

 * HouseGetVariable():

   204

 *

   205

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

   206

 */

   207

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

   208

{

   209

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

   210

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

   211

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

   212

   213

	if (object->scope == VSG_SCOPE_PARENT) {

   214

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

   215

	}

   216

   217

	switch (variable) {

   218

		/* Construction stage. */

   219

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

   220

   221

		/* Building age. */

   222

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

   223

   224

		/* Town zone */

   225

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

   226

   227

		/* Terrain type */

   228

		case 0x43: return GetTerrainType(tile);

   229

   230

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

   231

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

   232

   233

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

   234

		case 0x45: return _generating_world ? 1 : 0;

   235

   236

		/* Current animation frame. */

   237

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

   238

   239

   240

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

   241

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

   242

   243

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

   244

		case 0x61: {

   245

			const HouseSpec *hs = GetHouseSpecs(house_id);

   246

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

   247

   248

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

   249

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

   250

		}

   251

   252

		/* Land info for nearby tiles. */

   253

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

   254

   255

		/* Read GRF parameter */

   256

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

   257

	}

   258

   259

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

   260

   261

	*available = false;

   262

	return UINT_MAX;

   263

}

   264

   265

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

   266

{

   267

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

   268

	return NULL;

   269

}

   270

   271

/**

   272

 * NewHouseResolver():

   273

 *

   274

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

   275

 */

   276

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

   277

{

   278

	res->GetRandomBits = HouseGetRandomBits;

   279

	res->GetTriggers   = HouseGetTriggers;

   280

	res->SetTriggers   = HouseSetTriggers;

   281

	res->GetVariable   = HouseGetVariable;

   282

	res->ResolveReal   = HouseResolveReal;

   283

   284

	res->u.house.tile     = tile;

   285

	res->u.house.town     = town;

   286

	res->u.house.house_id = house_id;

   287

   288

	res->callback        = CBID_NO_CALLBACK;

   289

	res->callback_param1 = 0;

   290

	res->callback_param2 = 0;

   291

	res->last_value      = 0;

   292

	res->trigger         = 0;

   293

	res->reseed          = 0;

   294

	res->count           = 0;

   295

}

   296

   297

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

   298

{

   299

	ResolverObject object;

   300

	const SpriteGroup *group;

   301

   302

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

   303

	object.callback = callback;

   304

	object.callback_param1 = param1;

   305

	object.callback_param2 = param2;

   306

   307

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

   308

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

   309

   310

	return group->g.callback.result;

   311

}

   312

   313

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

   314

{

   315

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

   316

	const DrawTileSeqStruct *dtss;

   317

   318

	SpriteID image = dts->ground.sprite;

   319

	SpriteID pal   = dts->ground.pal;

   320

   321

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

   322

   323

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

   324

   325

	/* End now, if houses are invisible */

   326

	if (IsInvisibilitySet(TO_HOUSES)) return;

   327

   328

	foreach_draw_tile_seq(dtss, dts->seq) {

   329

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

   330

   331

		image = dtss->image.sprite;

   332

		pal   = dtss->image.pal;

   333

   334

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

   335

   336

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

   337

			if (pal == 0) {

   338

				const HouseSpec *hs = GetHouseSpecs(house_id);

   339

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

   340

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

   341

					if (callback != CALLBACK_FAILED) {

   342

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

   343

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

   344

					}

   345

				} else {

   346

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

   347

				}

   348

			}

   349

		} else {

   350

			pal = PAL_NONE;

   351

		}

   352

   353

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

   354

			AddSortableSpriteToDraw(

   355

				image, pal,

   356

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

   357

				dtss->size_x, dtss->size_y,

   358

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

   359

				IsTransparencySet(TO_HOUSES)

   360

			);

   361

		} else {

   362

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

   363

		}

   364

	}

   365

}

   366

   367

void DrawNewHouseTile(TileInfo *ti, HouseID house_id)

   368

{

   369

	const HouseSpec *hs = GetHouseSpecs(house_id);

   370

	const SpriteGroup *group;

   371

	ResolverObject object;

   372

   373

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

   374

   375

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

   376

   377

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

   378

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

   379

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

   380

		DrawGroundSprite(SPR_SHADOW_CELL, PAL_NONE);

   381

	} else {

   382

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

   383

		byte stage = GetHouseBuildingStage(ti->tile);

   384

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

   385

		DrawTileLayout(ti, group, stage, house_id);

   386

	}

   387

}

   388

   389

void AnimateNewHouseTile(TileIndex tile)

   390

{

   391

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

   392

	byte animation_speed = hs->animation_speed;

   393

	bool frame_set_by_callback = false;

   394

   395

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

   396

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

   397

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

   398

	}

   399

   400

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

   401

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

   402

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

   403

	 * maximum, corresponding to around 33 minutes. */

   404

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

   405

   406

	byte frame      = GetHouseAnimationFrame(tile);

   407

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

   408

   409

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

   410

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

   411

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

   412

   413

		if (callback_res != CALLBACK_FAILED) {

   414

			frame_set_by_callback = true;

   415

   416

			switch (callback_res & 0xFF) {

   417

				case 0xFF:

   418

					DeleteAnimatedTile(tile);

   419

					break;

   420

				case 0xFE:

   421

					/* Carry on as normal. */

   422

					frame_set_by_callback = false;

   423

					break;

   424

				default:

   425

					frame = callback_res & 0xFF;

   426

					break;

   427

			}

   428

   429

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

   430

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

   431

			if (GB(callback_res, 8, 7) != 0) PlayHouseSound(GB(callback_res, 8, 7), tile);

   432

		}

   433

	}

   434

   435

	if (!frame_set_by_callback) {

   436

		if (frame < num_frames) {

   437

			frame++;

   438

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

   439

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

   440

			frame = 0;

   441

		} else {

   442

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

   443

			DeleteAnimatedTile(tile);

   444

		}

   445

	}

   446

   447

	SetHouseAnimationFrame(tile, frame);

   448

	MarkTileDirtyByTile(tile);

   449

}

   450

   451

void ChangeHouseAnimationFrame(TileIndex tile, uint16 callback_result)

   452

{

   453

	switch (callback_result & 0xFF) {

   454

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

   455

		case 0xFE: AddAnimatedTile(tile);    break;

   456

		case 0xFF: DeleteAnimatedTile(tile); break;

   457

		default:

   458

			SetHouseAnimationFrame(tile, callback_result & 0xFF);

   459

			AddAnimatedTile(tile);

   460

			break;

   461

	}

   462

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

   463

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

   464

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

   465

}

   466

   467

bool CanDeleteHouse(TileIndex tile)

   468

{

   469

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

   470

   471

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

   472

	 * anyone using the scenario editor. */

   473

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

   474

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

   475

   476

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

   477

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

   478

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

   479

	} else {

   480

		return !(hs->extra_flags & BUILDING_IS_PROTECTED);

   481

	}

   482

}

   483

   484

static void AnimationControl(TileIndex tile, uint16 random_bits)

   485

{

   486

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

   487

   488

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

   489

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

   490

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

   491

   492

		if (callback_res != CALLBACK_FAILED) ChangeHouseAnimationFrame(tile, callback_res);

   493

	}

   494

}

   495

   496

bool NewHouseTileLoop(TileIndex tile)

   497

{

   498

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

   499

   500

	if (GetHouseProcessingTime(tile) > 0) {

   501

		DecHouseProcessingTime(tile);

   502

		return true;

   503

	}

   504

   505

	TriggerHouse(tile, HOUSE_TRIGGER_TILE_LOOP);

   506

	TriggerHouse(tile, HOUSE_TRIGGER_TILE_LOOP_TOP);

   507

   508

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

   509

		/* If this house is marked as having a synchronised callback, all the

   510

		 * tiles will have the callback called at once, rather than when the

   511

		 * tile loop reaches them. This should only be enabled for the northern

   512

		 * tile, or strange things will happen (here, and in TTDPatch). */

   513

		if (hs->extra_flags & SYNCHRONISED_CALLBACK_1B) {

   514

			uint16 random = GB(Random(), 0, 16);

   515

   516

			if (hs->building_flags & BUILDING_HAS_1_TILE)  AnimationControl(tile, random);