1

/* $Id$ */

     2

     3

/*

     4

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

     5

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

     6

 * current form.

     7

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

     8

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

     9

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

    10

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

    11

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

    12

 *

    13

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

    14

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

    15

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

    16

 *

    17

 *  -- TrueLight :: 2005-09-01

    18

 */

    19

    20

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

    21

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

    22

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

    23

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

    24

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

    25

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

    26

#include "../../table/strings.h"

    27

#include "../../map.h"

    28

#include "../../tile.h"

    29

#include "../../command.h"

    30

#include "trolly.h"

    31

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

    32

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

    33

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

    34

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

    35

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

    36

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

    37

#include "../../vehicle.h"

    38

#include "../ai.h"

    39

    40

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

    41

static void AiNew_State_FirstTime(Player *p)

    42

{

    43

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

    44

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

    45

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

    46

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

    47

	assert(p->ainew.state == AI_STATE_FIRST_TIME);

    48

	// We first have to init some things

    49

    50

	if (_current_player == 1 || _ai.network_client) {

    51

		ShowErrorMessage(INVALID_STRING_ID, TEMP_AI_IN_PROGRESS, 0, 0);

    52

	}

    53

    54

	// The PathFinder (AyStar)

    55

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

    56

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

    57

	p->ainew.path_info.start_tile_tl = 0;

    58

	p->ainew.path_info.start_tile_br = 0;

    59

	p->ainew.path_info.end_tile_tl = 0;

    60

	p->ainew.path_info.end_tile_br = 0;

    61

	p->ainew.pathfinder = new_AyStar_AiPathFinder(12, &p->ainew.path_info);

    62

    63

	p->ainew.idle = 0;

    64

	p->ainew.last_vehiclecheck_date = _date;

    65

    66

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

    67

	p->ainew.action = AI_ACTION_BUS_ROUTE;

    68

    69

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

    70

	p->ainew.state = AI_STATE_WAKE_UP;

    71

}

    72

    73

    74

// This function just waste some time

    75

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

    76

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

    77

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

    78

//

    79

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

    80

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

    81

static void AiNew_State_Nothing(Player *p)

    82

{

    83

	assert(p->ainew.state == AI_STATE_NOTHING);

    84

	// If we are done idling, start over again

    85

	if (p->ainew.idle == 0) p->ainew.idle = AI_RandomRange(DAY_TICKS * 2) + DAY_TICKS;

    86

	if (--p->ainew.idle == 0) {

    87

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

    88

		// I mean.. the next tick ;)

    89

		p->ainew.state = AI_STATE_WAKE_UP;

    90

	}

    91

}

    92

    93

    94

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

    95

//  Currently supported:

    96

//    - Make new route

    97

//    - Check route

    98

//    - Build HQ

    99

static void AiNew_State_WakeUp(Player *p)

   100

{

   101

	int32 money;

   102

	int c;

   103

	assert(p->ainew.state == AI_STATE_WAKE_UP);

   104

	// First, check if we have a HQ

   105

	if (p->location_of_house == 0) {

   106

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

   107

		// Random till we found a place for it!

   108

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

   109

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

   110

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

   111

		//  so we do not change any status

   112

		return;

   113

	}

   114

   115

	money = p->player_money - AI_MINIMUM_MONEY;

   116

   117

	// Let's pick an action!

   118

	if (p->ainew.action == AI_ACTION_NONE) {

   119

		c = AI_Random() & 0xFF;

   120

		if (p->current_loan > 0 &&

   121

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

   122

				c < 10) {

   123

			p->ainew.action = AI_ACTION_REPAY_LOAN;

   124

		} else if (p->ainew.last_vehiclecheck_date + AI_DAYS_BETWEEN_VEHICLE_CHECKS < _date) {

   125

			// Check all vehicles once in a while

   126

			p->ainew.action = AI_ACTION_CHECK_ALL_VEHICLES;

   127

			p->ainew.last_vehiclecheck_date = _date;

   128

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

   129

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

   130

			if (GetFreeUnitNumber(VEH_Road) <= _patches.max_roadveh) {

   131

				if (c < 85)

   132

					p->ainew.action = AI_ACTION_TRUCK_ROUTE;

   133

				else

   134

					p->ainew.action = AI_ACTION_BUS_ROUTE;

   135

			}

   136

		}/* else if (c < 200 && !_patches.ai_disable_veh_train) {

   137

			if (GetFreeUnitNumber(VEH_Train) <= _patches.max_trains) {

   138

				p->ainew.action = AI_ACTION_TRAIN_ROUTE;

   139

			}

   140

		}*/

   141

   142

		p->ainew.counter = 0;

   143

	}

   144

   145

	if (p->ainew.counter++ > AI_MAX_TRIES_FOR_SAME_ROUTE) {

   146

		p->ainew.action = AI_ACTION_NONE;

   147

		return;

   148

	}

   149

   150

	if (_patches.ai_disable_veh_roadveh && (

   151

				p->ainew.action == AI_ACTION_BUS_ROUTE ||

   152

				p->ainew.action == AI_ACTION_TRUCK_ROUTE

   153

			)) {

   154

		p->ainew.action = AI_ACTION_NONE;

   155

		return;

   156

	}

   157

   158

	if (_patches.ai_disable_veh_roadveh && (

   159

				p->ainew.action == AI_ACTION_BUS_ROUTE ||

   160

				p->ainew.action == AI_ACTION_TRUCK_ROUTE

   161

			)) {

   162

		p->ainew.action = AI_ACTION_NONE;

   163

		return;

   164

	}

   165

   166

	if (p->ainew.action == AI_ACTION_REPAY_LOAN &&

   167

			money > AI_MINIMUM_LOAN_REPAY_MONEY) {

   168

		// We start repaying some money..

   169

		p->ainew.state = AI_STATE_REPAY_MONEY;

   170

		return;

   171

	}

   172

   173

	if (p->ainew.action == AI_ACTION_CHECK_ALL_VEHICLES) {

   174

		p->ainew.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 (p->ainew.action == AI_ACTION_BUS_ROUTE &&

   181

			money > AI_MINIMUM_BUS_ROUTE_MONEY) {

   182

		if (GetFreeUnitNumber(VEH_Road) > _patches.max_roadveh) {

   183

			p->ainew.action = AI_ACTION_NONE;

   184

			return;

   185

		}

   186

		p->ainew.cargo = AI_NEED_CARGO;

   187

		p->ainew.state = AI_STATE_LOCATE_ROUTE;

   188

		p->ainew.tbt = AI_BUS; // Bus-route

   189

		return;

   190

	}

   191

	if (p->ainew.action == AI_ACTION_TRUCK_ROUTE &&

   192

			money > AI_MINIMUM_TRUCK_ROUTE_MONEY) {

   193

		if (GetFreeUnitNumber(VEH_Road) > _patches.max_roadveh) {

   194

			p->ainew.action = AI_ACTION_NONE;

   195

			return;

   196

		}

   197

		p->ainew.cargo = AI_NEED_CARGO;

   198

		p->ainew.last_id = 0;

   199

		p->ainew.state = AI_STATE_LOCATE_ROUTE;

   200

		p->ainew.tbt = AI_TRUCK;

   201

		return;

   202

	}

   203

   204

	p->ainew.state = AI_STATE_NOTHING;

   205

}

   206

   207

   208

static void AiNew_State_ActionDone(Player *p)

   209

{

   210

	p->ainew.action = AI_ACTION_NONE;

   211

	p->ainew.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

		Town *t = GetTown(ic);

   220

		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

			// Is it an active station

   239

			if (st->xy == 0) continue;

   240

			// Do we own it?

   241

			if (st->owner == _current_player) {

   242

				// Are we talking busses?

   243

				if (p->ainew.tbt == AI_BUS && (FACIL_BUS_STOP & st->facilities) != FACIL_BUS_STOP) continue;

   244

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

   245

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

   246

				// When was this station build?

   247

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

   248

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

   249

				count++;

   250

			} else {

   251

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

   252

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

   253

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

   254

				//  to build there

   255

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

   256

				// Is it around our city

   257

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

   258

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

   259

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

   260

				j++;

   261

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

   262

				if (j == 1) continue;

   263

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

   264

				//  a little chance that we still continue

   265

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

   266

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

   267

				// We don't like this station :(

   268

				return false;

   269

			}

   270

		}

   271

   272

		// We are about to add one...

   273

		count++;

   274

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

   275

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

   276

   277

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

   278

		return true;

   279

	}

   280

	if (type == AI_INDUSTRY) {

   281

		Industry *i = GetIndustry(ic);

   282

		Station *st;

   283

		int count = 0;

   284

		int j = 0;

   285

   286

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

   287

   288

		// No limits on delevering stations!

   289

		//  Or for industry that does not give anything yet

   290

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

   291

   292

		if (i->total_production[0] - i->total_transported[0] < AI_CHECKCITY_NEEDED_CARGO) return false;

   293

   294

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

   295

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

   296

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

   297

		FOR_ALL_STATIONS(st) {

   298

			// Is it an active station

   299

			if (st->xy == 0) continue;

   300

   301

			// Do we own it?

   302

			if (st->owner == _current_player) {

   303

				// Are we talking trucks?

   304

				if (p->ainew.tbt == AI_TRUCK && (FACIL_TRUCK_STOP & st->facilities) != FACIL_TRUCK_STOP) continue;

   305

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

   306

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

   307

				// When was this station build?

   308

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

   309

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

   310

				count++;

   311

			} else {

   312

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

   313

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

   314

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

   315

				//  to build there

   316

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

   317

				// It does not take this cargo

   318

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

   319

				// Is it around our industry

   320

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

   321

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

   322

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

   323

				j++;

   324

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

   325

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

   326

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

   327

				// We don't like this station :(

   328

				return false;

   329

			}

   330

		}

   331

   332

		// We are about to add one...

   333

		count++;

   334

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

   335

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

   336

   337

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

   338

		return true;

   339

	}

   340

   341

	return true;

   342

}

   343

   344

   345

// This functions tries to locate a good route

   346

static void AiNew_State_LocateRoute(Player *p)

   347

{

   348

	assert(p->ainew.state == AI_STATE_LOCATE_ROUTE);

   349

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

   350

   351

	// We don't have a route yet

   352

	if (p->ainew.cargo == AI_NEED_CARGO) {

   353

		p->ainew.new_cost = 0; // No cost yet

   354

		p->ainew.temp = -1;

   355

		// Reset the counter

   356

		p->ainew.counter = 0;

   357

   358

		p->ainew.from_ic = -1;

   359

		p->ainew.to_ic = -1;

   360

		if (p->ainew.tbt == AI_BUS) {

   361

			// For now we only have a passenger route

   362

			p->ainew.cargo = CT_PASSENGERS;

   363

   364

			// Find a route to cities

   365

			p->ainew.from_type = AI_CITY;

   366

			p->ainew.to_type = AI_CITY;

   367

		} else if (p->ainew.tbt == AI_TRUCK) {

   368

			p->ainew.cargo = AI_NO_CARGO;

   369

   370

			p->ainew.from_type = AI_INDUSTRY;

   371

			p->ainew.to_type = AI_INDUSTRY;

   372

		}

   373

   374

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

   375

		return;

   376

	}

   377

   378

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

   379

	p->ainew.counter++;

   380

	if (p->ainew.counter > AI_LOCATE_ROUTE_MAX_COUNTER) {

   381

		// Switch back to doing nothing!

   382

		p->ainew.state = AI_STATE_NOTHING;

   383

		return;

   384

	}

   385

   386

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

   387

	if (p->ainew.from_ic == -1) {

   388

		if (p->ainew.temp == -1) {

   389

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

   390

			if (p->ainew.from_type == AI_CITY)

   391

				p->ainew.temp = AI_RandomRange(_total_towns);

   392

			else

   393

				p->ainew.temp = AI_RandomRange(_total_industries);

   394

		}

   395

   396

		if (!AiNew_Check_City_or_Industry(p, p->ainew.temp, p->ainew.from_type)) {

   397

			// It was not a valid city

   398

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

   399

			//  to try again

   400

			p->ainew.temp++;

   401

			if (p->ainew.from_type == AI_CITY) {

   402

				if (p->ainew.temp >= (int)_total_towns) p->ainew.temp = 0;

   403

			} else {

   404

				if (p->ainew.temp >= _total_industries) p->ainew.temp = 0;

   405

			}

   406

   407

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

   408

			if (p->ainew.last_id == p->ainew.temp) return;

   409

			p->ainew.last_id = p->ainew.temp;

   410

   411

			return;

   412

		}

   413

   414

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

   415

		p->ainew.from_ic = p->ainew.temp;

   416

   417

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

   418

		p->ainew.temp = -1;

   419

		return;

   420

	}

   421

   422

	// Find a to-city

   423

	if (p->ainew.temp == -1) {

   424

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

   425

		if (p->ainew.to_type == AI_CITY)

   426

			p->ainew.temp = AI_RandomRange(_total_towns);

   427

		else

   428

			p->ainew.temp = AI_RandomRange(_total_industries);

   429

	}

   430

   431

	// The same city is not allowed

   432

	// Also check if the city is valid

   433

	if (p->ainew.temp != p->ainew.from_ic && AiNew_Check_City_or_Industry(p, p->ainew.temp, p->ainew.to_type)) {

   434

		// Maybe it is valid..

   435

   436

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

   437

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

   438

		//   is.

   439

   440

		if (p->ainew.from_type == AI_CITY && p->ainew.tbt == AI_BUS) {

   441

			int max_cargo = GetTown(p->ainew.from_ic)->max_pass + GetTown(p->ainew.temp)->max_pass;

   442

			max_cargo -= GetTown(p->ainew.from_ic)->act_pass + GetTown(p->ainew.temp)->act_pass;

   443

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

   444

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

   445

			if (DistanceManhattan(GetTown(p->ainew.from_ic)->xy, GetTown(p->ainew.temp)->xy) <= max_cargo * AI_LOCATEROUTE_BUS_CARGO_DISTANCE) {

   446

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

   447

				p->ainew.to_ic = p->ainew.temp;

   448

				p->ainew.state = AI_STATE_FIND_STATION;

   449

   450

				DEBUG(ai,1)(

   451

					"[AiNew - LocateRoute] Found bus-route of %d tiles long (from %d to %d)",

   452

					DistanceManhattan(GetTown(p->ainew.from_ic)->xy, GetTown(p->ainew.temp)->xy),

   453

					p->ainew.from_ic,

   454

					p->ainew.temp

   455

				);

   456

   457

				p->ainew.from_tile = 0;

   458

				p->ainew.to_tile = 0;

   459

   460

				return;

   461

			}

   462

		} else if (p->ainew.tbt == AI_TRUCK) {

   463

			bool found = false;

   464

			int max_cargo = 0;

   465

			int i;

   466

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

   467

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

   468

			if (GetIndustry(p->ainew.from_ic)->produced_cargo[0] != CT_INVALID && GetIndustry(p->ainew.from_ic)->total_production[0] != 0) {

   469

				for (i=0;i<3;i++) {

   470

					if (GetIndustry(p->ainew.temp)->accepts_cargo[i] == CT_INVALID) break;

   471

					if (GetIndustry(p->ainew.from_ic)->produced_cargo[0] == GetIndustry(p->ainew.temp)->accepts_cargo[i]) {

   472

						// Found a compatbiel industry

   473

						max_cargo = GetIndustry(p->ainew.from_ic)->total_production[0] - GetIndustry(p->ainew.from_ic)->total_transported[0];

   474

						found = true;

   475

						p->ainew.from_deliver = true;

   476

						p->ainew.to_deliver = false;

   477

						break;

   478

					}

   479

				}

   480

			}

   481

			if (!found && GetIndustry(p->ainew.temp)->produced_cargo[0] != CT_INVALID && GetIndustry(p->ainew.temp)->total_production[0] != 0) {

   482

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

   483

				for (i=0;i<3;i++) {

   484

					if (GetIndustry(p->ainew.from_ic)->accepts_cargo[i] == CT_INVALID) break;

   485

					if (GetIndustry(p->ainew.temp)->produced_cargo[0] == GetIndustry(p->ainew.from_ic)->accepts_cargo[i]) {

   486

						// Found a compatbiel industry