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/* $Id$ */

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/** @file town_cmd.cpp */

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#include "stdafx.h"

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#include "openttd.h"

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#include "functions.h"

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#include "debug.h"

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#include "strings.h"

    10

#include "road_map.h"

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#include "table/strings.h"

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#include "table/sprites.h"

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#include "map.h"

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#include "landscape.h"

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#include "tile.h"

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#include "town_map.h"

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#include "tunnel_map.h"

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#include "viewport.h"

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#include "town.h"

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#include "command.h"

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#include "gfx.h"

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#include "industry.h"

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#include "station.h"

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#include "vehicle.h"

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#include "player.h"

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#include "news.h"

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#include "saveload.h"

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#include "economy.h"

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#include "gui.h"

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#include "unmovable_map.h"

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#include "water_map.h"

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#include "variables.h"

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#include "bridge.h"

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#include "bridge_map.h"

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#include "date.h"

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#include "table/town_land.h"

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#include "genworld.h"

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#include "newgrf.h"

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#include "newgrf_callbacks.h"

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#include "newgrf_house.h"

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#include "newgrf_commons.h"

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#include "newgrf_townname.h"

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/* Initialize the town-pool */

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{

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	Industry *i;

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    57

	/* Delete town authority window

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	 * and remove from list of sorted towns */

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	_town_sort_dirty = true;

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	_total_towns--;

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    63

	/* Delete all industries belonging to the town */

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    66

	/* Go through all tiles and delete those belonging to the town */

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		switch (GetTileType(tile)) {

    69

			case MP_HOUSE:

    71

				break;

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    74

			case MP_TUNNELBRIDGE:

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				if (IsTileOwner(tile, OWNER_TOWN) &&

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					DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR);

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				break;

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    80

			default:

    81

				break;

    82

		}

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	}

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    86

    87

	MarkWholeScreenDirty();

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}

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    98

// Local

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static int _grow_town_result;

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   101

static bool BuildTownHouse(Town *t, TileIndex tile);

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static void DoBuildTownHouse(Town *t, TileIndex tile);

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   104

static void TownDrawHouseLift(const TileInfo *ti)

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{

   106

	AddChildSpriteScreen(SPR_LIFT, PAL_NONE, 14, 60 - GetLiftPosition(ti->tile));

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}

   108

   109

typedef void TownDrawTileProc(const TileInfo *ti);

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static TownDrawTileProc * const _town_draw_tile_procs[1] = {

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	TownDrawHouseLift

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};

   113

   114

uint OriginalTileRandomiser(uint x, uint y)

   115

{

   116

	uint variant;

   117

	variant  = x >> 4;

   118

	variant ^= x >> 6;

   119

	variant ^= y >> 4;

   120

	variant -= y >> 6;

   121

	variant &= 3;

   122

	return variant;

   123

}

   124

   125

/**

   126

 * House Tile drawing handler.

   127

 * Part of the tile loop process

   128

 * @param ti TileInfo of the tile to draw

   129

 */

   130

static void DrawTile_Town(TileInfo *ti)

   131

{

   132

	const DrawBuildingsTileStruct *dcts;

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	SpriteID image;

   134

	SpriteID pal;

   135

	HouseID house_id = GetHouseType(ti->tile);

   136

   137

	if (house_id >= NEW_HOUSE_OFFSET) {

   138

		/* Houses don't necessarily need new graphics. If they don't have a

   139

		 * spritegroup associated with them, then the sprite for the substitute

   140

		 * house id is drawn instead. */

   141

		if (GetHouseSpecs(house_id)->spritegroup != NULL) {

   142

			DrawNewHouseTile(ti, house_id);

   143

			return;

   144

		} else {

   145

			house_id = GetHouseSpecs(house_id)->substitute_id;

   146

		}

   147

	}

   148

   149

	/* Retrieve pointer to the draw town tile struct */

   150

	dcts = &_town_draw_tile_data[house_id << 4 | OriginalTileRandomiser(ti->x, ti->y) << 2 | GetHouseBuildingStage(ti->tile)];

   151

   153

   154

	image = dcts->ground.sprite;

   155

	pal   = dcts->ground.pal;

   156

	DrawGroundSprite(image, pal);

   157

   158

	/* Add a house on top of the ground? */

   159

	image = dcts->building.sprite;

   160

	if (image != 0) {

   162

			ti->x + dcts->subtile_x,

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			ti->y + dcts->subtile_y,

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			dcts->width + 1,

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			dcts->height + 1,

   166

			dcts->dz,

   169

		);

   170

   171

		if (HASBIT(_transparent_opt, TO_HOUSES)) return;

   172

	}

   173

   174

	{

   175

		int proc = dcts->draw_proc - 1;

   176

   177

		if (proc >= 0) _town_draw_tile_procs[proc](ti);

   178

	}

   179

}

   180

   181

static uint GetSlopeZ_Town(TileIndex tile, uint x, uint y)

   182

{

   183

	return GetTileMaxZ(tile);

   184

}

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   187

{

   189

}

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   191

/**

   192

 * Animate a tile for a town

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 * Only certain houses can be animated

   194

 * The newhouses animation superseeds regular ones

   195

 * @param tile TileIndex of the house to animate

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 */

   197

static void AnimateTile_Town(TileIndex tile)

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{

   199

	int pos, dest;

   200

   201

	if (GetHouseType(tile) >= NEW_HOUSE_OFFSET) {

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		AnimateNewHouseTile(tile);

   203

		return;

   204

	}

   205

   206

	if (_tick_counter & 3) return;

   207

   208

	/* If the house is not one with a lift anymore, then stop this animating.

   209

	 * Not exactly sure when this happens, but probably when a house changes.

   210

	 * Before this was just a return...so it'd leak animated tiles..

   211

	 * That bug seems to have been here since day 1?? */

   212

	if (!(GetHouseSpecs(GetHouseType(tile))->building_flags & BUILDING_IS_ANIMATED)) {

   213

		DeleteAnimatedTile(tile);

   214

		return;

   215

	}

   216

   217

	if (!LiftHasDestination(tile)) {

   218

		int i;

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   220

		/*  Building has 6 floors, number 0 .. 6, where 1 is illegal.

   221

		 *  This is due to the fact that the first floor is, in the graphics,

   222

		 *  the height of 2 'normal' floors.

   223

		 *  Furthermore, there are 6 lift positions from floor N (incl) to floor N + 1 (excl) */

   224

		do {

   225

			i = (Random() & 7) - 1;

   226

		} while (i < 0 || i == 1 || i * 6 == GetLiftPosition(tile));

   227

   228

		SetLiftDestination(tile, i);

   229

	}

   230

   231

	pos = GetLiftPosition(tile);

   232

	dest = GetLiftDestination(tile) * 6;

   233

	pos += (pos < dest) ? 1 : -1;

   234

	SetLiftPosition(tile, pos);

   235

   236

	if (pos == dest) HaltLift(tile);

   237

   238

	MarkTileDirtyByTile(tile);

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}

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   241

static void UpdateTownRadius(Town *t);

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   243

/**

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 * Determines if a town is close to a tile

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 * @param tile TileIndex of the tile to query

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 * @param dist maximum distance to be accepted

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 * @returns true if the tile correspond to the distance criteria

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 */

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static bool IsCloseToTown(TileIndex tile, uint dist)

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{

   251

	const Town* t;

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   253

	FOR_ALL_TOWNS(t) {

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		if (DistanceManhattan(tile, t->xy) < dist) return true;

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	}

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	return false;

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}

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/**

   260

 * Marks the town sign as needing a repaint

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 * @param t Town requesting repaint

   262

 */

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static void MarkTownSignDirty(Town *t)

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{

   265

	MarkAllViewportsDirty(

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		t->sign.left - 6,

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		t->sign.top - 3,

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		t->sign.left + t->sign.width_1 * 4 + 12,

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		t->sign.top + 45

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	);

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}

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   273

/**

   274

 * Resize the sign(label) of the town after changes in

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 * population (creation or growth or else)

   276

 * @param t Town to update

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 */

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void UpdateTownVirtCoord(Town *t)

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{

   280

	Point pt;

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   282

	MarkTownSignDirty(t);

   283

	pt = RemapCoords2(TileX(t->xy) * TILE_SIZE, TileY(t->xy) * TILE_SIZE);

   284

	SetDParam(0, t->index);

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	SetDParam(1, t->population);

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	UpdateViewportSignPos(&t->sign, pt.x, pt.y - 24,

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		_patches.population_in_label ? STR_TOWN_LABEL_POP : STR_TOWN_LABEL);

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	MarkTownSignDirty(t);

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}

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   291

/**

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 * Change the towns population

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 * @param t Town which polulation has changed

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 * @param mod polulation change (can be positive or negative)

   295

 */

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static void ChangePopulation(Town *t, int mod)

   297

{

   298

	t->population += mod;

   299

	InvalidateWindow(WC_TOWN_VIEW, t->index);

   300

	UpdateTownVirtCoord(t);

   301

   302

	if (_town_sort_order & 2) _town_sort_dirty = true;

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}

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   305

/**

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 * Determines the world population

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 * Basically, count population of all towns, one by one

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 * @return uint32 the calculated population of the world

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 */

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uint32 GetWorldPopulation()

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{

   312

	uint32 pop;

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	const Town* t;

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   315

	pop = 0;

   316

	FOR_ALL_TOWNS(t) pop += t->population;

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	return pop;

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}

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   320

/**

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 * Helper function for house completion stages progression

   322

 * @param tile TileIndex of the house (or parts of it) to "grow"

   323

 */

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static void MakeSingleHouseBigger(TileIndex tile)

   325

{

   326

	assert(IsTileType(tile, MP_HOUSE));

   327

   328

	/* means it is completed, get out. */

   329

	if (LiftHasDestination(tile)) return;

   330

   331

	/* progress in construction stages */

   332

	IncHouseConstructionTick(tile);

   333

	if (GetHouseConstructionTick(tile) != 0) return;

   334

   335

	/* Check and/or  */

   336

	if (HASBIT(GetHouseSpecs(GetHouseType(tile))->callback_mask, CBM_CONSTRUCTION_STATE_CHANGE)) {

   337

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

   338

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

   339

	}

   340

   341

	if (IsHouseCompleted(tile)) {

   342

		/* Now that construction is complete, we can add the population of the

   343

		 * building to the town. */

   344

		ChangePopulation(GetTownByTile(tile), GetHouseSpecs(GetHouseType(tile))->population);

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	}

   346

	MarkTileDirtyByTile(tile);

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}

   348

   349

/** Make the house advances in its construction stages until completion

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 * @param tile TileIndex of house

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 */

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static void MakeTownHouseBigger(TileIndex tile)

   353

{

   354

	uint flags = GetHouseSpecs(GetHouseType(tile))->building_flags;

   355

	if (flags & BUILDING_HAS_1_TILE)  MakeSingleHouseBigger(TILE_ADDXY(tile, 0, 0));

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	if (flags & BUILDING_2_TILES_Y)   MakeSingleHouseBigger(TILE_ADDXY(tile, 0, 1));

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	if (flags & BUILDING_2_TILES_X)   MakeSingleHouseBigger(TILE_ADDXY(tile, 1, 0));

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	if (flags & BUILDING_HAS_4_TILES) MakeSingleHouseBigger(TILE_ADDXY(tile, 1, 1));

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}

   360

   361

/**

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 * Periodic tic handler for houses and town

   363

 * @param tile been asked to do its stuff

   364

 */

   365

static void TileLoop_Town(TileIndex tile)

   366

{

   367

	Town *t;

   368

	uint32 r;

   369

	HouseID house_id = GetHouseType(tile);

   370

	HouseSpec *hs = GetHouseSpecs(house_id);

   371

   372

	/* NewHouseTileLoop returns false if Callback 21 succeeded, i.e. the house

   373

	 * doesn't exist any more, so don't continue here. */

   374

	if (house_id >= NEW_HOUSE_OFFSET && !NewHouseTileLoop(tile)) return;

   375

   376

	if (!IsHouseCompleted(tile)) {

   377

		/* Construction is not completed. See if we can go further in construction*/

   378

		MakeTownHouseBigger(tile);

   379

		return;

   380

	}

   381

   382

	/* If the lift has a destination, it is already an animated tile. */

   383

	if ((hs->building_flags & BUILDING_IS_ANIMATED) &&

   384

			house_id < NEW_HOUSE_OFFSET &&

   385

			!LiftHasDestination(tile) &&

   386

			CHANCE16(1, 2))

   387

		AddAnimatedTile(tile);

   388

   389

	t = GetTownByTile(tile);

   390

   391

	r = Random();

   392

   393

	if (HASBIT(hs->callback_mask, CBM_HOUSE_PRODUCE_CARGO)) {

   394

		for (uint i = 0; i < 256; i++) {

   395

			uint16 callback = GetHouseCallback(CBID_HOUSE_PRODUCE_CARGO, i, r, house_id, t, tile);

   396

   397

			if (callback == CALLBACK_FAILED) break;

   398

			if (callback == 0x20FF) break;

   399

   400

			CargoID cargo = GetCargoTranslation(GB(callback, 8, 7), hs->grffile);

   401

			if (cargo == CT_INVALID) continue;

   402

   403

			uint amt = GB(callback, 0, 8);

   404

			uint moved = MoveGoodsToStation(tile, 1, 1, cargo, amt);

   405

   406

			const CargoSpec *cs = GetCargo(cargo);

   407

			switch (cs->town_effect) {

   408

				case TE_PASSENGERS:

   409

					t->new_max_pass += amt;

   410

					t->new_act_pass += moved;

   411

					break;

   412

   413

				case TE_MAIL:

   414

					t->new_max_mail += amt;

   415

					t->new_act_mail += moved;

   416

					break;

   417

   418

				default:

   419

					break;

   420

			}

   421

		}

   422

	} else {

   423

		if (GB(r, 0, 8) < hs->population) {

   424

			uint amt = GB(r, 0, 8) / 8 + 1;

   425

			uint moved;

   426

   427

			if (_economy.fluct <= 0) amt = (amt + 1) >> 1;

   428

			t->new_max_pass += amt;

   429

			moved = MoveGoodsToStation(tile, 1, 1, CT_PASSENGERS, amt);

   430

			t->new_act_pass += moved;

   431

		}

   432

   433

		if (GB(r, 8, 8) < hs->mail_generation) {

   434

			uint amt = GB(r, 8, 8) / 8 + 1;

   435

			uint moved;

   436

   437

			if (_economy.fluct <= 0) amt = (amt + 1) >> 1;

   438

			t->new_max_mail += amt;

   439

			moved = MoveGoodsToStation(tile, 1, 1, CT_MAIL, amt);

   440

			t->new_act_mail += moved;

   441

		}

   442

	}

   443

   444

	_current_player = OWNER_TOWN;

   445

   446

	if (hs->building_flags & BUILDING_HAS_1_TILE &&

   447

			HASBIT(t->flags12, TOWN_IS_FUNDED) &&

   448

			CanDeleteHouse(tile) &&

   449

			max(_cur_year - GetHouseConstructionYear(tile), 0) >= hs->minimum_life &&

   450

			--t->time_until_rebuild == 0) {

   451

		t->time_until_rebuild = GB(r, 16, 8) + 192;

   452

   453

		ClearTownHouse(t, tile);

   454

   455

		/* Rebuild with another house? */

   456

		if (GB(r, 24, 8) >= 12) DoBuildTownHouse(t, tile);

   457

	}

   458

   459

	_current_player = OWNER_NONE;

   460

}

   461

   462

/**

   463

 * Unused handler

   464

 * @param tile unused

   465

 */

   466

static void ClickTile_Town(TileIndex tile)

   467

{

   468

	/* not used */

   469

}

   470

   471

static CommandCost ClearTile_Town(TileIndex tile, byte flags)

   472

{

   473

	int rating;

   474

	CommandCost cost;

   475

	Town *t;

   476

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

   477

   478

	if (flags&DC_AUTO && !(flags&DC_AI_BUILDING)) return_cmd_error(STR_2004_BUILDING_MUST_BE_DEMOLISHED);

   479

	if (!CanDeleteHouse(tile)) return CMD_ERROR;

   480

   481

	cost.AddCost(_price.remove_house * hs->removal_cost >> 8);

   482

   483

	rating = hs->remove_rating_decrease;

   484

	_cleared_town_rating += rating;

   485

	_cleared_town = t = GetTownByTile(tile);

   486

   487

	if (IsValidPlayer(_current_player)) {

   488

		if (rating > t->ratings[_current_player] && !(flags & DC_NO_TOWN_RATING) && !_cheats.magic_bulldozer.value) {

   489

			SetDParam(0, t->index);