1

/* $Id$ */

     2

     3

/**

     4

 * @file trolly.cpp Implementation of the trolly AI.

     5

 *

     6

 * This AI was created as a direct reaction to the big demand for some good AIs

     7

 * in OTTD. Too bad it never left alpha-stage, and it is considered dead in its

     8

 * current form.

     9

 * By the time of writing this, we, the creator of this AI and a good friend of

    10

 * mine, are designing a whole new AI-system that allows us to create AIs

    11

 * easier and without all the fuzz we encountered while I was working on this

    12

 * AI. By the time that system is finished, you can expect that this AI will

    13

 * dissapear, because it is pretty obselete and bad programmed.

    14

 *

    15

 * Meanwhile I wish you all much fun with this AI; if you are interested as

    16

 * AI-developer in this AI, I advise you not stare too long to some code, some

    17

 * things in here really are... strange ;) But in either way: enjoy :)

    18

 *

    19

 *  -- TrueLight :: 2005-09-01

    20

 */

    21

    22

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

    23

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

    24

#include "../../debug.h"

    25

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

    26

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

    27

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

    28

#include "trolly.h"

    29

#include "../../depot_base.h"

    30

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

    31

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

    32

#include "../../station_base.h"

    33

#include "../../engine_func.h"

    34

#include "../../engine_base.h"

    35

#include "../../gui.h"

    36

#include "../../depot_base.h"

    37

#include "../../vehicle_base.h"

    38

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

    39

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

    40

#include "../ai.h"

    41

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

    42

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

    43

    44

#include "table/strings.h"

    45

    46

PlayerAiNew _players_ainew[MAX_PLAYERS];

    47

    48

// This function is called after StartUp. It is the init of an AI

    49

static void AiNew_State_FirstTime(Player *p)

    50

{

    51

	// This assert is used to protect those function from misuse

    52

	//   You have quickly a small mistake in the state-array

    53

	//   With that, everything would go wrong. Finding that, is almost impossible

    54

	//   With this assert, that problem can never happen.

    55

	assert(_players_ainew[p->index].state == AI_STATE_FIRST_TIME);

    56

	// We first have to init some things

    57

    58

	if (_current_player == 1) ShowErrorMessage(INVALID_STRING_ID, TEMP_AI_IN_PROGRESS, 0, 0);

    59

    60

	// The PathFinder (AyStar)

    61

	// TODO: Maybe when an AI goes bankrupt, this is de-init

    62

	//  or when coming from a savegame.. should be checked out!

    63

	_players_ainew[p->index].path_info.start_tile_tl = 0;

    64

	_players_ainew[p->index].path_info.start_tile_br = 0;

    65

	_players_ainew[p->index].path_info.end_tile_tl = 0;

    66

	_players_ainew[p->index].path_info.end_tile_br = 0;

    67

	_players_ainew[p->index].pathfinder = new_AyStar_AiPathFinder(12, &_players_ainew[p->index].path_info);

    68

    69

	_players_ainew[p->index].idle = 0;

    70

	_players_ainew[p->index].last_vehiclecheck_date = _date;

    71

    72

	// We ALWAYS start with a bus route.. just some basic money ;)

    73

	_players_ainew[p->index].action = AI_ACTION_BUS_ROUTE;

    74

    75

	// Let's popup the news, and after that, start building..

    76

	_players_ainew[p->index].state = AI_STATE_WAKE_UP;

    77

}

    78

    79

    80

// This function just waste some time

    81

//  It keeps it more real. The AI can build on such tempo no normal user

    82

//  can ever keep up with that. The competitor_speed already delays a bit

    83

//  but after the AI finished a track it really needs to go to sleep.

    84

//

    85

// Let's say, we sleep between one and three days if the AI is put on Very Fast.

    86

//  This means that on Very Slow it will be between 16 and 48 days.. slow enough?

    87

static void AiNew_State_Nothing(Player *p)

    88

{

    89

	assert(_players_ainew[p->index].state == AI_STATE_NOTHING);

    90

	// If we are done idling, start over again

    91

	if (_players_ainew[p->index].idle == 0) _players_ainew[p->index].idle = AI_RandomRange(DAY_TICKS * 2) + DAY_TICKS;

    92

	if (--_players_ainew[p->index].idle == 0) {

    93

		// We are done idling.. what you say? Let's do something!

    94

		// I mean.. the next tick ;)

    95

		_players_ainew[p->index].state = AI_STATE_WAKE_UP;

    96

	}

    97

}

    98

    99

   100

// This function picks out a task we are going to do.

   101

//  Currently supported:

   102

//    - Make new route

   103

//    - Check route

   104

//    - Build HQ

   105

static void AiNew_State_WakeUp(Player *p)

   106

{

   107

	int c;

   108

	assert(_players_ainew[p->index].state == AI_STATE_WAKE_UP);

   109

	// First, check if we have a HQ

   110

	if (p->location_of_house == 0) {

   111

		// We have no HQ yet, build one on a random place

   112

		// Random till we found a place for it!

   113

		// TODO: this should not be on a random place..

   114

		AiNew_Build_CompanyHQ(p, AI_Random() % MapSize());

   115

		// Enough for now, but we want to come back here the next time

   116

		//  so we do not change any status

   117

		return;

   118

	}

   119

   120

	Money money = p->player_money - AI_MINIMUM_MONEY;

   121

   122

	// Let's pick an action!

   123

	if (_players_ainew[p->index].action == AI_ACTION_NONE) {

   124

		c = AI_Random() & 0xFF;

   125

		if (p->current_loan > 0 &&

   126

				p->old_economy[1].income > AI_MINIMUM_INCOME_FOR_LOAN &&

   127

				c < 10) {

   128

			_players_ainew[p->index].action = AI_ACTION_REPAY_LOAN;

   129

		} else if (_players_ainew[p->index].last_vehiclecheck_date + AI_DAYS_BETWEEN_VEHICLE_CHECKS < _date) {

   130

			// Check all vehicles once in a while

   131

			_players_ainew[p->index].action = AI_ACTION_CHECK_ALL_VEHICLES;

   132

			_players_ainew[p->index].last_vehiclecheck_date = _date;

   133

		} else if (c < 100 && !_settings_game.ai.ai_disable_veh_roadveh) {

   134

			// Do we have any spots for road-vehicles left open?

   135

			if (GetFreeUnitNumber(VEH_ROAD) <= _settings_game.vehicle.max_roadveh) {

   136

				if (c < 85) {

   137

					_players_ainew[p->index].action = AI_ACTION_TRUCK_ROUTE;

   138

				} else {

   139

					_players_ainew[p->index].action = AI_ACTION_BUS_ROUTE;

   140

				}

   141

			}

   142

#if 0

   143

		} else if (c < 200 && !_settings_game.ai.ai_disable_veh_train) {

   144

			if (GetFreeUnitNumber(VEH_TRAIN) <= _settings_game.vehicle.max_trains) {

   145

				_players_ainew[p->index].action = AI_ACTION_TRAIN_ROUTE;

   146

			}

   147

#endif

   148

		}

   149

   150

		_players_ainew[p->index].counter = 0;

   151

	}

   152

   153

	if (_players_ainew[p->index].counter++ > AI_MAX_TRIES_FOR_SAME_ROUTE) {

   154

		_players_ainew[p->index].action = AI_ACTION_NONE;

   155

		return;

   156

	}

   157

   158

	if (_settings_game.ai.ai_disable_veh_roadveh && (

   159

				_players_ainew[p->index].action == AI_ACTION_BUS_ROUTE ||

   160

				_players_ainew[p->index].action == AI_ACTION_TRUCK_ROUTE

   161

			)) {

   162

		_players_ainew[p->index].action = AI_ACTION_NONE;

   163

		return;

   164

	}

   165

   166

	if (_players_ainew[p->index].action == AI_ACTION_REPAY_LOAN &&

   167

			money > AI_MINIMUM_LOAN_REPAY_MONEY) {

   168

		// We start repaying some money..

   169

		_players_ainew[p->index].state = AI_STATE_REPAY_MONEY;

   170

		return;

   171

	}

   172

   173

	if (_players_ainew[p->index].action == AI_ACTION_CHECK_ALL_VEHICLES) {

   174

		_players_ainew[p->index].state = AI_STATE_CHECK_ALL_VEHICLES;

   175

		return;

   176

	}

   177

   178

	// It is useless to start finding a route if we don't have enough money

   179

	//  to build the route anyway..

   180

	if (_players_ainew[p->index].action == AI_ACTION_BUS_ROUTE &&

   181

			money > AI_MINIMUM_BUS_ROUTE_MONEY) {

   182

		if (GetFreeUnitNumber(VEH_ROAD) > _settings_game.vehicle.max_roadveh) {

   183

			_players_ainew[p->index].action = AI_ACTION_NONE;

   184

			return;

   185

		}

   186

		_players_ainew[p->index].cargo = AI_NEED_CARGO;

   187

		_players_ainew[p->index].state = AI_STATE_LOCATE_ROUTE;

   188

		_players_ainew[p->index].tbt = AI_BUS; // Bus-route

   189

		return;

   190

	}

   191

	if (_players_ainew[p->index].action == AI_ACTION_TRUCK_ROUTE &&

   192

			money > AI_MINIMUM_TRUCK_ROUTE_MONEY) {

   193

		if (GetFreeUnitNumber(VEH_ROAD) > _settings_game.vehicle.max_roadveh) {

   194

			_players_ainew[p->index].action = AI_ACTION_NONE;

   195

			return;

   196

		}

   197

		_players_ainew[p->index].cargo = AI_NEED_CARGO;

   198

		_players_ainew[p->index].last_id = 0;

   199

		_players_ainew[p->index].state = AI_STATE_LOCATE_ROUTE;

   200

		_players_ainew[p->index].tbt = AI_TRUCK;

   201

		return;

   202

	}

   203

   204

	_players_ainew[p->index].state = AI_STATE_NOTHING;

   205

}

   206

   207

   208

static void AiNew_State_ActionDone(Player *p)

   209

{

   210

	_players_ainew[p->index].action = AI_ACTION_NONE;

   211

	_players_ainew[p->index].state = AI_STATE_NOTHING;

   212

}

   213

   214

   215

// Check if a city or industry is good enough to start a route there

   216

static bool AiNew_Check_City_or_Industry(Player *p, int ic, byte type)

   217

{

   218

	if (type == AI_CITY) {

   219

		const Town* t = GetTown(ic);

   220

		const Station* st;

   221

		uint count = 0;

   222

		int j = 0;

   223

   224

		// We don't like roadconstructions, don't even true such a city

   225

		if (t->road_build_months != 0) return false;

   226

   227

		// Check if the rating in a city is high enough

   228

		//  If not, take a chance if we want to continue

   229

		if (t->ratings[_current_player] < 0 && AI_CHANCE16(1, 4)) return false;

   230

   231

		if (t->max_pass - t->act_pass < AI_CHECKCITY_NEEDED_CARGO && !AI_CHANCE16(1, AI_CHECKCITY_CITY_CHANCE)) return false;

   232

   233

		// Check if we have build a station in this town the last 6 months

   234

		//  else we don't do it. This is done, because stat updates can be slow

   235

		//  and sometimes it takes up to 4 months before the stats are corectly.

   236

		//  This way we don't get 12 busstations in one city of 100 population ;)

   237

		FOR_ALL_STATIONS(st) {

   238

			// Do we own it?

   239

			if (st->owner == _current_player) {

   240

				// Are we talking busses?

   241

				if (_players_ainew[p->index].tbt == AI_BUS && (FACIL_BUS_STOP & st->facilities) != FACIL_BUS_STOP) continue;

   242

				// Is it the same city as we are in now?

   243

				if (st->town != t) continue;

   244

				// When was this station build?

   245

				if (_date - st->build_date < AI_CHECKCITY_DATE_BETWEEN) return false;

   246

				// Cound the amount of stations in this city that we own

   247

				count++;

   248

			} else {

   249

				// We do not own it, request some info about the station

   250

				//  we want to know if this station gets the same good. If so,

   251

				//  we want to know its rating. If it is too high, we are not going

   252

				//  to build there

   253

				if (!st->goods[CT_PASSENGERS].last_speed) continue;

   254

				// Is it around our city

   255

				if (DistanceManhattan(st->xy, t->xy) > 10) continue;

   256

				// It does take this cargo.. what is his rating?

   257

				if (st->goods[CT_PASSENGERS].rating < AI_CHECKCITY_CARGO_RATING) continue;

   258

				j++;

   259

				// When this is the first station, we build a second with no problem ;)

   260

				if (j == 1) continue;

   261

				// The rating is high.. second station...

   262

				//  a little chance that we still continue

   263

				//  But if there are 3 stations of this size, we never go on...

   264

				if (j == 2 && AI_CHANCE16(1, AI_CHECKCITY_CARGO_RATING_CHANCE)) continue;

   265

				// We don't like this station :(

   266

				return false;

   267

			}

   268

		}

   269

   270

		// We are about to add one...

   271

		count++;

   272

		// Check if we the city can provide enough cargo for this amount of stations..

   273

		if (count * AI_CHECKCITY_CARGO_PER_STATION > t->max_pass) return false;

   274

   275

		// All check are okay, so we can build here!

   276

		return true;

   277

	}

   278

	if (type == AI_INDUSTRY) {

   279

		const Industry* i = GetIndustry(ic);

   280

		const Station* st;

   281

		int count = 0;

   282

		int j = 0;

   283

   284

		if (i->town != NULL && i->town->ratings[_current_player] < 0 && AI_CHANCE16(1, 4)) return false;

   285

   286

		// No limits on delevering stations!

   287

		//  Or for industry that does not give anything yet

   288

		if (i->produced_cargo[0] == CT_INVALID || i->last_month_production[0] == 0) return true;

   289

   290

		if (i->last_month_production[0] - i->last_month_transported[0] < AI_CHECKCITY_NEEDED_CARGO) return false;

   291

   292

		// Check if we have build a station in this town the last 6 months

   293

		//  else we don't do it. This is done, because stat updates can be slow

   294

		//  and sometimes it takes up to 4 months before the stats are corectly.

   295

		FOR_ALL_STATIONS(st) {

   296

			// Do we own it?

   297

			if (st->owner == _current_player) {

   298

				// Are we talking trucks?

   299

				if (_players_ainew[p->index].tbt == AI_TRUCK && (FACIL_TRUCK_STOP & st->facilities) != FACIL_TRUCK_STOP) continue;

   300

				// Is it the same city as we are in now?

   301

				if (st->town != i->town) continue;

   302

				// When was this station build?

   303

				if (_date - st->build_date < AI_CHECKCITY_DATE_BETWEEN) return false;

   304

				// Cound the amount of stations in this city that we own

   305

				count++;

   306

			} else {

   307

				// We do not own it, request some info about the station

   308

				//  we want to know if this station gets the same good. If so,

   309

				//  we want to know its rating. If it is too high, we are not going

   310

				//  to build there

   311

				if (i->produced_cargo[0] == CT_INVALID) continue;

   312

				// It does not take this cargo

   313

				if (!st->goods[i->produced_cargo[0]].last_speed) continue;

   314

				// Is it around our industry

   315

				if (DistanceManhattan(st->xy, i->xy) > 5) continue;

   316

				// It does take this cargo.. what is his rating?

   317

				if (st->goods[i->produced_cargo[0]].rating < AI_CHECKCITY_CARGO_RATING) continue;

   318

				j++;

   319

				// The rating is high.. a little chance that we still continue

   320

				//  But if there are 2 stations of this size, we never go on...

   321

				if (j == 1 && AI_CHANCE16(1, AI_CHECKCITY_CARGO_RATING_CHANCE)) continue;

   322

				// We don't like this station :(

   323

				return false;

   324

			}

   325

		}

   326

   327

		// We are about to add one...

   328

		count++;

   329

		// Check if we the city can provide enough cargo for this amount of stations..

   330

		if (count * AI_CHECKCITY_CARGO_PER_STATION > i->last_month_production[0]) return false;

   331

   332

		// All check are okay, so we can build here!

   333

		return true;

   334

	}

   335

   336

	return true;

   337

}

   338

   339

   340

// This functions tries to locate a good route

   341

static void AiNew_State_LocateRoute(Player *p)

   342

{

   343

	assert(_players_ainew[p->index].state == AI_STATE_LOCATE_ROUTE);

   344

	// For now, we only support PASSENGERS, CITY and BUSSES

   345

   346

	// We don't have a route yet

   347

	if (_players_ainew[p->index].cargo == AI_NEED_CARGO) {

   348

		_players_ainew[p->index].new_cost = 0; // No cost yet

   349

		_players_ainew[p->index].temp = -1;

   350

		// Reset the counter

   351

		_players_ainew[p->index].counter = 0;

   352

   353

		_players_ainew[p->index].from_ic = -1;

   354

		_players_ainew[p->index].to_ic = -1;

   355

		if (_players_ainew[p->index].tbt == AI_BUS) {

   356

			// For now we only have a passenger route

   357

			_players_ainew[p->index].cargo = CT_PASSENGERS;

   358

   359

			// Find a route to cities

   360

			_players_ainew[p->index].from_type = AI_CITY;

   361

			_players_ainew[p->index].to_type = AI_CITY;

   362

		} else if (_players_ainew[p->index].tbt == AI_TRUCK) {

   363

			_players_ainew[p->index].cargo = AI_NO_CARGO;

   364

   365

			_players_ainew[p->index].from_type = AI_INDUSTRY;

   366

			_players_ainew[p->index].to_type = AI_INDUSTRY;

   367

		}

   368

   369

		// Now we are doing initing, we wait one tick

   370

		return;

   371

	}

   372

   373

	// Increase the counter and abort if it is taking too long!

   374

	_players_ainew[p->index].counter++;

   375

	if (_players_ainew[p->index].counter > AI_LOCATE_ROUTE_MAX_COUNTER) {

   376

		// Switch back to doing nothing!

   377

		_players_ainew[p->index].state = AI_STATE_NOTHING;

   378

		return;

   379

	}

   380

   381

	// We are going to locate a city from where we are going to connect

   382

	if (_players_ainew[p->index].from_ic == -1) {

   383

		if (_players_ainew[p->index].temp == -1) {

   384

			// First, we pick a random spot to search from

   385

			if (_players_ainew[p->index].from_type == AI_CITY) {

   386

				_players_ainew[p->index].temp = AI_RandomRange(GetMaxTownIndex() + 1);

   387

			} else {

   388

				_players_ainew[p->index].temp = AI_RandomRange(GetMaxIndustryIndex() + 1);

   389

			}

   390

		}

   391

   392

		if (!AiNew_Check_City_or_Industry(p, _players_ainew[p->index].temp, _players_ainew[p->index].from_type)) {

   393

			// It was not a valid city

   394

			//  increase the temp with one, and return. We will come back later here

   395

			//  to try again

   396

			_players_ainew[p->index].temp++;

   397

			if (_players_ainew[p->index].from_type == AI_CITY) {

   398

				if (_players_ainew[p->index].temp > GetMaxTownIndex()) _players_ainew[p->index].temp = 0;

   399

			} else {

   400

				if (_players_ainew[p->index].temp > GetMaxIndustryIndex()) _players_ainew[p->index].temp = 0;

   401

			}

   402

   403

			// Don't do an attempt if we are trying the same id as the last time...

   404

			if (_players_ainew[p->index].last_id == _players_ainew[p->index].temp) return;

   405

			_players_ainew[p->index].last_id = _players_ainew[p->index].temp;

   406

   407

			return;

   408

		}

   409

   410

		// We found a good city/industry, save the data of it

   411

		_players_ainew[p->index].from_ic = _players_ainew[p->index].temp;

   412

   413

		// Start the next tick with finding a to-city

   414

		_players_ainew[p->index].temp = -1;

   415

		return;

   416

	}

   417

   418

	// Find a to-city

   419

	if (_players_ainew[p->index].temp == -1) {

   420

		// First, we pick a random spot to search to

   421

		if (_players_ainew[p->index].to_type == AI_CITY) {

   422

			_players_ainew[p->index].temp = AI_RandomRange(GetMaxTownIndex() + 1);

   423

		} else {

   424

			_players_ainew[p->index].temp = AI_RandomRange(GetMaxIndustryIndex() + 1);

   425

		}

   426

	}

   427

   428

	// The same city is not allowed

   429

	// Also check if the city is valid

   430

	if (_players_ainew[p->index].temp != _players_ainew[p->index].from_ic && AiNew_Check_City_or_Industry(p, _players_ainew[p->index].temp, _players_ainew[p->index].to_type)) {

   431

		// Maybe it is valid..

   432

   433

		/* We need to know if they are not to far apart from eachother..

   434

		 * We do that by checking how much cargo we have to move and how long the

   435

		 * route is.

   436

		 */

   437

   438

		if (_players_ainew[p->index].from_type == AI_CITY && _players_ainew[p->index].tbt == AI_BUS) {

   439

			const Town* town_from = GetTown(_players_ainew[p->index].from_ic);

   440

			const Town* town_temp = GetTown(_players_ainew[p->index].temp);

   441

			uint distance = DistanceManhattan(town_from->xy, town_temp->xy);

   442

			int max_cargo;

   443

   444

			max_cargo  = town_from->max_pass + town_temp->max_pass;

   445

			max_cargo -= town_from->act_pass + town_temp->act_pass;

   446

   447

			// max_cargo is now the amount of cargo we can move between the two cities

   448

			// If it is more than the distance, we allow it

   449

			if (distance <= max_cargo * AI_LOCATEROUTE_BUS_CARGO_DISTANCE) {

   450

				// We found a good city/industry, save the data of it

   451

				_players_ainew[p->index].to_ic = _players_ainew[p->index].temp;

   452

				_players_ainew[p->index].state = AI_STATE_FIND_STATION;

   453

   454

				DEBUG(ai, 1, "[LocateRoute] found bus-route of %d tiles long (from %d to %d)",

   455

					distance,

   456

					_players_ainew[p->index].from_ic,

   457

					_players_ainew[p->index].temp

   458

				);

   459

   460

				_players_ainew[p->index].from_tile = 0;

   461

				_players_ainew[p->index].to_tile = 0;

   462

   463

				return;

   464

			}

   465

		} else if (_players_ainew[p->index].tbt == AI_TRUCK) {

   466

			const Industry* ind_from = GetIndustry(_players_ainew[p->index].from_ic);

   467

			const Industry* ind_temp = GetIndustry(_players_ainew[p->index].temp);

   468

			bool found = false;

   469

			int max_cargo = 0;

   470

			uint i;

   471

   472

			// TODO: in max_cargo, also check other cargo (beside [0])

   473

			// First we check if the from_ic produces cargo that this ic accepts

   474

			if (ind_from->produced_cargo[0] != CT_INVALID && ind_from->last_month_production[0] != 0) {

   475

				for (i = 0; i < lengthof(ind_temp->accepts_cargo); i++) {

   476

					if (ind_temp->accepts_cargo[i] == CT_INVALID) break;

   477

					if (ind_from->produced_cargo[0] == ind_temp->accepts_cargo[i]) {

   478

						// Found a compatible industry

   479

						max_cargo = ind_from->last_month_production[0] - ind_from->last_month_transported[0];

   480

						found = true;

   481

						_players_ainew[p->index].from_deliver = true;

   482

						_players_ainew[p->index].to_deliver = false;

   483

						break;

   484

					}

   485

				}

   486

			}

   487

			if (!found && ind_temp->produced_cargo[0] != CT_INVALID && ind_temp->last_month_production[0] != 0) {

   488

				// If not check if the current ic produces cargo that the from_ic accepts

   489

				for (i = 0; i < lengthof(ind_from->accepts_cargo); i++) {

   490

					if (ind_from->accepts_cargo[i] == CT_INVALID) break;

   491

					if (ind_from->produced_cargo[0] == ind_from->accepts_cargo[i]) {

   492

						// Found a compatbiel industry

   493

						found = true;

   494

						max_cargo = ind_temp->last_month_production[0] - ind_temp->last_month_transported[0];

   495

						_players_ainew[p->index].from_deliver = false;

   496

						_players_ainew[p->index].to_deliver = true;

   497

						break;

   498

					}

   499

				}

   500

			}

   501

			if (found) {

   502

				// Yeah, they are compatible!!!