1

/* $Id$ */

     2

     3

#include "../../stdafx.h"

     4

#include "../../openttd.h"

     5

#include "../../aircraft.h"

     6

#include "../../bridge_map.h"

     7

#include "../../tile_cmd.h"

     8

#include "../../landscape.h"

     9

#include "../../rail_map.h"

    10

#include "../../road_map.h"

    11

#include "../../roadveh.h"

    12

#include "../../station_map.h"

    13

#include "../../tunnel_map.h"

    14

#include "../../engine.h"

    15

#include "../../command_func.h"

    16

#include "../../town.h"

    17

#include "../../industry.h"

    18

#include "../../station.h"

    19

#include "../../pathfind.h"

    20

#include "../../airport.h"

    21

#include "../../depot.h"

    22

#include "../../variables.h"

    23

#include "../../bridge.h"

    24

#include "../../date_func.h"

    25

#include "../../tunnelbridge_map.h"

    26

#include "../../window_func.h"

    27

#include "../../vehicle_func.h"

    28

#include "../../functions.h"

    29

#include "../../saveload.h"

    30

#include "../../player_func.h"

    31

#include "../../player_base.h"

    32

#include "../../settings_type.h"

    33

#include "default.h"

    34

    35

#include "../../table/ai_rail.h"

    36

    37

// remove some day perhaps?

    38

static uint _ai_service_interval;

    39

PlayerAI _players_ai[MAX_PLAYERS];

    40

    41

typedef void AiStateAction(Player *p);

    42

    43

enum {

    44

	AIS_0                            =  0,

    45

	AIS_1                            =  1,

    46

	AIS_VEH_LOOP                     =  2,

    47

	AIS_VEH_CHECK_REPLACE_VEHICLE    =  3,

    48

	AIS_VEH_DO_REPLACE_VEHICLE       =  4,

    49

	AIS_WANT_NEW_ROUTE               =  5,

    50

	AIS_BUILD_DEFAULT_RAIL_BLOCKS    =  6,

    51

	AIS_BUILD_RAIL                   =  7,

    52

	AIS_BUILD_RAIL_VEH               =  8,

    53

	AIS_DELETE_RAIL_BLOCKS           =  9,

    54

	AIS_BUILD_DEFAULT_ROAD_BLOCKS    = 10,

    55

	AIS_BUILD_ROAD                   = 11,

    56

	AIS_BUILD_ROAD_VEHICLES          = 12,

    57

	AIS_DELETE_ROAD_BLOCKS           = 13,

    58

	AIS_AIRPORT_STUFF                = 14,

    59

	AIS_BUILD_DEFAULT_AIRPORT_BLOCKS = 15,

    60

	AIS_BUILD_AIRCRAFT_VEHICLES      = 16,

    61

	AIS_CHECK_SHIP_STUFF             = 17,

    62

	AIS_BUILD_DEFAULT_SHIP_BLOCKS    = 18,

    63

	AIS_DO_SHIP_STUFF                = 19,

    64

	AIS_SELL_VEHICLE                 = 20,

    65

	AIS_REMOVE_STATION               = 21,

    66

	AIS_REMOVE_TRACK                 = 22,

    67

	AIS_REMOVE_SINGLE_RAIL_TILE      = 23

    68

};

    69

    70

    71

static TrackBits GetRailTrackStatus(TileIndex tile)

    72

{

    73

	uint32 r = GetTileTrackStatus(tile, TRANSPORT_RAIL, 0);

    74

	return (TrackBits)(byte) (r | r >> 8);

    75

}

    76

    77

    78

static void AiCase0(Player *p)

    79

{

    80

	_players_ai[p->index].state = AIS_REMOVE_TRACK;

    81

	_players_ai[p->index].state_counter = 0;

    82

}

    83

    84

static void AiCase1(Player *p)

    85

{

    86

	_players_ai[p->index].cur_veh = NULL;

    87

	_players_ai[p->index].state = AIS_VEH_LOOP;

    88

}

    89

    90

static void AiStateVehLoop(Player *p)

    91

{

    92

	Vehicle *v;

    93

	uint index;

    94

    95

	index = (_players_ai[p->index].cur_veh == NULL) ? 0 : _players_ai[p->index].cur_veh->index + 1;

    96

    97

	FOR_ALL_VEHICLES_FROM(v, index) {

    98

		if (v->owner != _current_player) continue;

    99

   100

		if ((v->type == VEH_TRAIN && v->subtype == 0) ||

   101

				v->type == VEH_ROAD ||

   102

				(v->type == VEH_AIRCRAFT && IsNormalAircraft(v)) ||

   103

				v->type == VEH_SHIP) {

   104

			/* replace engine? */

   105

			if (v->type == VEH_TRAIN && v->engine_type < 3 &&

   106

					(_price.build_railvehicle >> 3) < p->player_money) {

   107

				_players_ai[p->index].state = AIS_VEH_CHECK_REPLACE_VEHICLE;

   108

				_players_ai[p->index].cur_veh = v;

   109

				return;

   110

			}

   111

   112

			/* not profitable? */

   113

			if (v->age >= 730 &&

   114

					v->profit_last_year < _price.station_value * 5 &&

   115

					v->profit_this_year < _price.station_value * 5) {

   116

				_players_ai[p->index].state_counter = 0;

   117

				_players_ai[p->index].state = AIS_SELL_VEHICLE;

   118

				_players_ai[p->index].cur_veh = v;

   119

				return;

   120

			}

   121

   122

			/* not reliable? */

   123

			if (v->age >= v->max_age || (

   124

						v->age != 0 &&

   125

						GetEngine(v->engine_type)->reliability < 35389

   126

					)) {

   127

				_players_ai[p->index].state = AIS_VEH_CHECK_REPLACE_VEHICLE;

   128

				_players_ai[p->index].cur_veh = v;

   129

				return;

   130

			}

   131

		}

   132

	}

   133

   134

	_players_ai[p->index].state = AIS_WANT_NEW_ROUTE;

   135

	_players_ai[p->index].state_counter = 0;

   136

}

   137

   138

static EngineID AiChooseTrainToBuild(RailType railtype, Money money, byte flag, TileIndex tile)

   139

{

   140

	EngineID best_veh_index = INVALID_ENGINE;

   141

	byte best_veh_score = 0;

   142

	CommandCost ret;

   143

	EngineID i;

   144

   145

	for (i = 0; i < NUM_TRAIN_ENGINES; i++) {

   146

		const RailVehicleInfo *rvi = RailVehInfo(i);

   147

		const Engine* e = GetEngine(i);

   148

   149

		if (!IsCompatibleRail(rvi->railtype, railtype) ||

   150

				rvi->railveh_type == RAILVEH_WAGON ||

   151

				(rvi->railveh_type == RAILVEH_MULTIHEAD && flag & 1) ||

   152

				!HasBit(e->player_avail, _current_player) ||

   153

				e->reliability < 0x8A3D) {

   154

			continue;

   155

		}

   156

   157

		ret = DoCommand(tile, i, 0, 0, CMD_BUILD_RAIL_VEHICLE);

   158

		if (CmdSucceeded(ret) && ret.GetCost() <= money && rvi->ai_rank >= best_veh_score) {

   159

			best_veh_score = rvi->ai_rank;

   160

			best_veh_index = i;

   161

		}

   162

	}

   163

   164

	return best_veh_index;

   165

}

   166

   167

static EngineID AiChooseRoadVehToBuild(CargoID cargo, Money money, TileIndex tile)

   168

{

   169

	EngineID best_veh_index = INVALID_ENGINE;

   170

	int32 best_veh_rating = 0;

   171

	EngineID i = ROAD_ENGINES_INDEX;

   172

	EngineID end = i + NUM_ROAD_ENGINES;

   173

   174

	for (; i != end; i++) {

   175

		const RoadVehicleInfo *rvi = RoadVehInfo(i);

   176

		const Engine* e = GetEngine(i);

   177

		int32 rating;

   178

		CommandCost ret;

   179

   180

		if (!HasBit(e->player_avail, _current_player) || e->reliability < 0x8A3D) {

   181

			continue;

   182

		}

   183

   184

		/* Skip vehicles which can't take our cargo type */

   185

		if (rvi->cargo_type != cargo && !CanRefitTo(i, cargo)) continue;

   186

   187

		/* Rate and compare the engine by speed & capacity */

   188

		rating = rvi->max_speed * rvi->capacity;

   189

		if (rating <= best_veh_rating) continue;

   190

   191

		ret = DoCommand(tile, i, 0, 0, CMD_BUILD_ROAD_VEH);

   192

		if (CmdFailed(ret)) continue;

   193

   194

		/* Add the cost of refitting */

   195

		if (rvi->cargo_type != cargo) ret.AddCost(GetRefitCost(i));

   196

		if (ret.GetCost() > money) continue;

   197

   198

		best_veh_rating = rating;

   199

		best_veh_index = i;

   200

	}

   201

   202

	return best_veh_index;

   203

}

   204

   205

static EngineID AiChooseAircraftToBuild(Money money, byte flag)

   206

{

   207

	EngineID best_veh_index = INVALID_ENGINE;

   208

	Money best_veh_cost = 0;

   209

	EngineID i;

   210

   211

	for (i = AIRCRAFT_ENGINES_INDEX; i != AIRCRAFT_ENGINES_INDEX + NUM_AIRCRAFT_ENGINES; i++) {

   212

		const Engine* e = GetEngine(i);

   213

		CommandCost ret;

   214

   215

		if (!HasBit(e->player_avail, _current_player) || e->reliability < 0x8A3D) {

   216

			continue;

   217

		}

   218

   219

		if ((AircraftVehInfo(i)->subtype & AIR_CTOL) != flag) continue;

   220

   221

		ret = DoCommand(0, i, 0, DC_QUERY_COST, CMD_BUILD_AIRCRAFT);

   222

		if (CmdSucceeded(ret) && ret.GetCost() <= money && ret.GetCost() >= best_veh_cost) {

   223

			best_veh_cost = ret.GetCost();

   224

			best_veh_index = i;

   225

		}

   226

	}

   227

   228

	return best_veh_index;

   229

}

   230

   231

static Money AiGetBasePrice(const Player* p)

   232

{

   233

	Money base = _price.station_value;

   234

   235

	// adjust base price when more expensive vehicles are available

   236

	switch (_players_ai[p->index].railtype_to_use) {

   237

		default: NOT_REACHED();

   238

		case RAILTYPE_RAIL:     break;

   239

		case RAILTYPE_ELECTRIC: break;

   240

		case RAILTYPE_MONO:     base = (base * 3) >> 1; break;

   241

		case RAILTYPE_MAGLEV:   base *= 2; break;

   242

	}

   243

   244

	return base;

   245

}

   246

   247

static EngineID AiChooseRoadVehToReplaceWith(const Player* p, const Vehicle* v)

   248

{

   249

	Money avail_money = p->player_money + v->value;

   250

	return AiChooseRoadVehToBuild(v->cargo_type, avail_money, v->tile);

   251

}

   252

   253

static EngineID AiChooseAircraftToReplaceWith(const Player* p, const Vehicle* v)

   254

{

   255

	Money avail_money = p->player_money + v->value;

   256

	return AiChooseAircraftToBuild(

   257

		avail_money, AircraftVehInfo(v->engine_type)->subtype & AIR_CTOL

   258

	);

   259

}

   260

   261

static EngineID AiChooseTrainToReplaceWith(const Player* p, const Vehicle* v)

   262

{

   263

	Money avail_money = p->player_money + v->value;

   264

	const Vehicle* u = v;

   265

	int num = 0;

   266

   267

	while (++num, u->Next() != NULL) {

   268

		u = u->Next();

   269

	}

   270

   271

	// XXX: check if a wagon

   272

	return AiChooseTrainToBuild(v->u.rail.railtype, avail_money, 0, v->tile);

   273

}

   274

   275

static EngineID AiChooseShipToReplaceWith(const Player* p, const Vehicle* v)

   276

{

   277

	/* Ships are not implemented in this (broken) AI */

   278

	return INVALID_ENGINE;

   279

}

   280

   281

static void AiHandleGotoDepot(Player *p, int cmd)

   282

{

   283

	if (_players_ai[p->index].cur_veh->current_order.type != OT_GOTO_DEPOT)

   284

		DoCommand(0, _players_ai[p->index].cur_veh->index, 0, DC_EXEC, cmd);

   285

   286

	if (++_players_ai[p->index].state_counter <= 1387) {

   287

		_players_ai[p->index].state = AIS_VEH_DO_REPLACE_VEHICLE;

   288

		return;

   289

	}

   290

   291

	if (_players_ai[p->index].cur_veh->current_order.type == OT_GOTO_DEPOT) {

   292

		_players_ai[p->index].cur_veh->current_order.type = OT_DUMMY;

   293

		_players_ai[p->index].cur_veh->current_order.flags = 0;

   294

		InvalidateWindow(WC_VEHICLE_VIEW, _players_ai[p->index].cur_veh->index);

   295

	}

   296

}

   297

   298

static void AiRestoreVehicleOrders(Vehicle *v, BackuppedOrders *bak)

   299

{

   300

	if (bak->order == NULL) return;

   301

   302

	for (uint i = 0; bak->order[i].type != OT_NOTHING; i++) {

   303

		if (!DoCommandP(0, v->index + (i << 16), PackOrder(&bak->order[i]), NULL, CMD_INSERT_ORDER | CMD_NO_TEST_IF_IN_NETWORK))

   304

			break;

   305

	}

   306

}

   307

   308

static void AiHandleReplaceTrain(Player *p)

   309

{

   310

	const Vehicle* v = _players_ai[p->index].cur_veh;

   311

	BackuppedOrders orderbak;

   312

	EngineID veh;

   313

   314

	// wait until the vehicle reaches the depot.

   315

	if (!IsTileDepotType(v->tile, TRANSPORT_RAIL) || v->u.rail.track != 0x80 || !(v->vehstatus&VS_STOPPED)) {

   316

		AiHandleGotoDepot(p, CMD_SEND_TRAIN_TO_DEPOT);

   317

		return;

   318

	}

   319

   320

	veh = AiChooseTrainToReplaceWith(p, v);

   321

	if (veh != INVALID_ENGINE) {

   322

		TileIndex tile;

   323

   324

		BackupVehicleOrders(v, &orderbak);

   325

		tile = v->tile;

   326

   327

		if (CmdSucceeded(DoCommand(0, v->index, 2, DC_EXEC, CMD_SELL_RAIL_WAGON)) &&

   328

				CmdSucceeded(DoCommand(tile, veh, 0, DC_EXEC, CMD_BUILD_RAIL_VEHICLE))) {

   329

			VehicleID veh = _new_vehicle_id;

   330

			AiRestoreVehicleOrders(GetVehicle(veh), &orderbak);

   331

			DoCommand(0, veh, 0, DC_EXEC, CMD_START_STOP_TRAIN);

   332

   333

			DoCommand(0, veh, _ai_service_interval, DC_EXEC, CMD_CHANGE_SERVICE_INT);

   334

		}

   335

	}

   336

}

   337

   338

static void AiHandleReplaceRoadVeh(Player *p)

   339

{

   340

	const Vehicle* v = _players_ai[p->index].cur_veh;

   341

	BackuppedOrders orderbak;

   342

	EngineID veh;

   343

   344

	if (!v->IsStoppedInDepot()) {

   345

		AiHandleGotoDepot(p, CMD_SEND_ROADVEH_TO_DEPOT);

   346

		return;

   347

	}

   348

   349

	veh = AiChooseRoadVehToReplaceWith(p, v);

   350

	if (veh != INVALID_ENGINE) {

   351

		TileIndex tile;

   352

   353

		BackupVehicleOrders(v, &orderbak);

   354

		tile = v->tile;

   355

   356

		if (CmdSucceeded(DoCommand(0, v->index, 0, DC_EXEC, CMD_SELL_ROAD_VEH)) &&

   357

				CmdSucceeded(DoCommand(tile, veh, 0, DC_EXEC, CMD_BUILD_ROAD_VEH))) {

   358

			VehicleID veh = _new_vehicle_id;

   359

   360

			AiRestoreVehicleOrders(GetVehicle(veh), &orderbak);

   361

			DoCommand(0, veh, 0, DC_EXEC, CMD_START_STOP_ROADVEH);

   362

			DoCommand(0, veh, _ai_service_interval, DC_EXEC, CMD_CHANGE_SERVICE_INT);

   363

		}

   364

	}

   365

}

   366

   367

static void AiHandleReplaceAircraft(Player *p)

   368

{

   369

	const Vehicle* v = _players_ai[p->index].cur_veh;

   370

	BackuppedOrders orderbak;

   371

	EngineID veh;

   372

   373

	if (!v->IsStoppedInDepot()) {

   374

		AiHandleGotoDepot(p, CMD_SEND_AIRCRAFT_TO_HANGAR);

   375

		return;

   376

	}

   377

   378

	veh = AiChooseAircraftToReplaceWith(p, v);

   379

	if (veh != INVALID_ENGINE) {

   380

		TileIndex tile;

   381

   382

		BackupVehicleOrders(v, &orderbak);

   383

		tile = v->tile;

   384

   385

		if (CmdSucceeded(DoCommand(0, v->index, 0, DC_EXEC, CMD_SELL_AIRCRAFT)) &&

   386

				CmdSucceeded(DoCommand(tile, veh, 0, DC_EXEC, CMD_BUILD_AIRCRAFT))) {

   387

			VehicleID veh = _new_vehicle_id;

   388

			AiRestoreVehicleOrders(GetVehicle(veh), &orderbak);

   389

			DoCommand(0, veh, 0, DC_EXEC, CMD_START_STOP_AIRCRAFT);

   390

   391

			DoCommand(0, veh, _ai_service_interval, DC_EXEC, CMD_CHANGE_SERVICE_INT);

   392

		}

   393

	}

   394

}

   395

   396

static void AiHandleReplaceShip(Player *p)

   397

{

   398

	/* Ships are not implemented in this (broken) AI */

   399

}

   400

   401

typedef EngineID CheckReplaceProc(const Player* p, const Vehicle* v);

   402

   403

static CheckReplaceProc* const _veh_check_replace_proc[] = {

   404

	AiChooseTrainToReplaceWith,

   405

	AiChooseRoadVehToReplaceWith,

   406

	AiChooseShipToReplaceWith,

   407

	AiChooseAircraftToReplaceWith,

   408

};

   409

   410

typedef void DoReplaceProc(Player *p);

   411

static DoReplaceProc* const _veh_do_replace_proc[] = {

   412

	AiHandleReplaceTrain,

   413

	AiHandleReplaceRoadVeh,

   414

	AiHandleReplaceShip,

   415

	AiHandleReplaceAircraft

   416

};

   417

   418

static void AiStateCheckReplaceVehicle(Player *p)

   419

{

   420

	const Vehicle* v = _players_ai[p->index].cur_veh;

   421

   422

	if (!v->IsValid() ||

   423

			v->owner != _current_player ||

   424

			v->type > VEH_SHIP ||

   425

			_veh_check_replace_proc[v->type - VEH_TRAIN](p, v) == INVALID_ENGINE) {

   426

		_players_ai[p->index].state = AIS_VEH_LOOP;

   427

	} else {

   428

		_players_ai[p->index].state_counter = 0;

   429

		_players_ai[p->index].state = AIS_VEH_DO_REPLACE_VEHICLE;

   430

	}

   431

}

   432

   433

static void AiStateDoReplaceVehicle(Player *p)

   434

{

   435

	const Vehicle* v = _players_ai[p->index].cur_veh;

   436

   437

	_players_ai[p->index].state = AIS_VEH_LOOP;

   438

	// vehicle is not owned by the player anymore, something went very wrong.

   439

	if (!v->IsValid() || v->owner != _current_player) return;

   440

	_veh_do_replace_proc[v->type - VEH_TRAIN](p);

   441

}

   442

   443

struct FoundRoute {

   444

	int distance;

   445

	CargoID cargo;

   446

	void *from;

   447

	void *to;

   448

};

   449

   450

static Town *AiFindRandomTown()

   451

{

   452

	return GetRandomTown();

   453

}

   454

   455

static Industry *AiFindRandomIndustry()

   456

{

   457

	int num = RandomRange(GetMaxIndustryIndex());

   458

	if (IsValidIndustryID(num)) return GetIndustry(num);

   459

   460

	return NULL;

   461

}

   462

   463

static void AiFindSubsidyIndustryRoute(FoundRoute *fr)

   464

{

   465

	uint i;

   466

	CargoID cargo;

   467

	const Subsidy* s;

   468

	Industry* from;

   469

	TileIndex to_xy;

   470

   471

	// initially error

   472

	fr->distance = -1;

   473

   474

	// Randomize subsidy index..

   475

	i = RandomRange(lengthof(_subsidies) * 3);

   476

	if (i >= lengthof(_subsidies)) return;

   477

   478

	s = &_subsidies[i];

   479

   480

	// Don't want passengers or mail

   481

	cargo = s->cargo_type;

   482

	if (cargo == CT_INVALID ||

   483

			cargo == CT_PASSENGERS ||

   484

			cargo == CT_MAIL ||

   485

			s->age > 7) {

   486

		return;

   487

	}

   488

	fr->cargo = cargo;

   489

   490

	fr->from = from = GetIndustry(s->from);

   491

   492

	if (cargo == CT_GOODS || cargo == CT_FOOD) {