tron@2186: /* $Id$ */
tron@2186: 
belugas@6125: /** @file engine.cpp */
belugas@6125: 
truelight@0: #include "stdafx.h"
Darkvater@1891: #include "openttd.h"
tron@1299: #include "debug.h"
truelight@0: #include "engine.h"
rubidium@8254: #include "player_base.h"
rubidium@8254: #include "player_func.h"
rubidium@8116: #include "command_func.h"
truelight@0: #include "news.h"
truelight@0: #include "saveload.h"
tron@2159: #include "variables.h"
peter1138@2708: #include "train.h"
Darkvater@5854: #include "aircraft.h"
belugas@3866: #include "newgrf_cargo.h"
rubidium@6643: #include "group.h"
rubidium@7388: #include "misc/autoptr.hpp"
rubidium@8114: #include "strings_func.h"
rubidium@8225: #include "gfx_func.h"
rubidium@8131: #include "functions.h"
rubidium@8131: #include "window_func.h"
rubidium@8140: #include "date_func.h"
rubidium@8212: #include "autoreplace_base.h"
rubidium@8212: #include "autoreplace_gui.h"
rubidium@8214: #include "string_func.h"
rubidium@8270: #include "settings_type.h"
truelight@0: 
rubidium@8264: #include "table/strings.h"
rubidium@8264: #include "table/engines.h"
rubidium@8264: 
rubidium@8268: Engine _engines[TOTAL_NUM_ENGINES];
tron@2763: EngineInfo _engine_info[TOTAL_NUM_ENGINES];
tron@2763: RailVehicleInfo _rail_vehicle_info[NUM_TRAIN_ENGINES];
tron@2763: ShipVehicleInfo _ship_vehicle_info[NUM_SHIP_ENGINES];
tron@2763: AircraftVehicleInfo _aircraft_vehicle_info[NUM_AIRCRAFT_ENGINES];
tron@2763: RoadVehicleInfo _road_vehicle_info[NUM_ROAD_ENGINES];
tron@2763: 
truelight@0: enum {
truelight@4300: 	YEAR_ENGINE_AGING_STOPS = 2050,
truelight@4300: };
truelight@4300: 
truelight@0: 
peter1138@8221: void SetupEngines()
peter1138@8221: {
peter1138@8221: 	/* Copy original static engine data */
peter1138@8226: 	memcpy(&_engine_info, &_orig_engine_info, sizeof(_orig_engine_info));
peter1138@8226: 	memcpy(&_rail_vehicle_info, &_orig_rail_vehicle_info, sizeof(_orig_rail_vehicle_info));
peter1138@8226: 	memcpy(&_ship_vehicle_info, &_orig_ship_vehicle_info, sizeof(_orig_ship_vehicle_info));
peter1138@8226: 	memcpy(&_aircraft_vehicle_info, &_orig_aircraft_vehicle_info, sizeof(_orig_aircraft_vehicle_info));
peter1138@8226: 	memcpy(&_road_vehicle_info, &_orig_road_vehicle_info, sizeof(_orig_road_vehicle_info));
peter1138@8221: 
peter1138@8221: 	/* Add type to engines */
peter1138@8221: 	Engine* e = _engines;
peter1138@8221: 	do e->type = VEH_TRAIN;    while (++e < &_engines[ROAD_ENGINES_INDEX]);
peter1138@8221: 	do e->type = VEH_ROAD;     while (++e < &_engines[SHIP_ENGINES_INDEX]);
peter1138@8221: 	do e->type = VEH_SHIP;     while (++e < &_engines[AIRCRAFT_ENGINES_INDEX]);
peter1138@8221: 	do e->type = VEH_AIRCRAFT; while (++e < &_engines[TOTAL_NUM_ENGINES]);
peter1138@8258: 
peter1138@8258: 	/* Set up default engine names */
peter1138@8258: 	for (EngineID engine = 0; engine < TOTAL_NUM_ENGINES; engine++) {
peter1138@8258: 		EngineInfo *ei = &_engine_info[engine];
peter1138@8258: 		ei->string_id = STR_8000_KIRBY_PAUL_TANK_STEAM + engine;
peter1138@8258: 	}
peter1138@8221: }
peter1138@8221: 
peter1138@8221: 
tron@2477: void ShowEnginePreviewWindow(EngineID engine);
truelight@0: 
rubidium@6247: void DeleteCustomEngineNames()
truelight@0: {
peter1138@8258: 	Engine *e;
peter1138@8258: 	FOR_ALL_ENGINES(e) {
peter1138@8258: 		free(e->name);
peter1138@8258: 		e->name = NULL;
truelight@0: 	}
truelight@0: 
truelight@0: 	_vehicle_design_names &= ~1;
truelight@0: }
truelight@0: 
rubidium@6247: void LoadCustomEngineNames()
truelight@0: {
rubidium@4432: 	/* XXX: not done */
Darkvater@5380: 	DEBUG(misc, 1, "LoadCustomEngineNames: not done");
truelight@0: }
truelight@0: 
truelight@0: static void CalcEngineReliability(Engine *e)
truelight@0: {
truelight@0: 	uint age = e->age;
truelight@0: 
peter1138@6606: 	/* Check for early retirement */
peter1138@6606: 	if (e->player_avail != 0 && !_patches.never_expire_vehicles) {
peter1138@6606: 		uint retire_early = EngInfo(e - _engines)->retire_early;
peter1138@6606: 		if (retire_early > 0 && age >= e->duration_phase_1 + e->duration_phase_2 - retire_early * 12) {
peter1138@6606: 			/* Early retirement is enabled and we're past the date... */
peter1138@6606: 			e->player_avail = 0;
peter1138@6606: 			AddRemoveEngineFromAutoreplaceAndBuildWindows(e->type);
peter1138@6606: 		}
peter1138@6606: 	}
peter1138@6606: 
truelight@0: 	if (age < e->duration_phase_1) {
truelight@0: 		uint start = e->reliability_start;
truelight@0: 		e->reliability = age * (e->reliability_max - start) / e->duration_phase_1 + start;
bjarni@4767: 	} else if ((age -= e->duration_phase_1) < e->duration_phase_2 || _patches.never_expire_vehicles) {
bjarni@4767: 		/* We are at the peak of this engines life. It will have max reliability.
bjarni@4767: 		 * This is also true if the engines never expire. They will not go bad over time */
truelight@0: 		e->reliability = e->reliability_max;
truelight@0: 	} else if ((age -= e->duration_phase_2) < e->duration_phase_3) {
truelight@0: 		uint max = e->reliability_max;
truelight@0: 		e->reliability = (int)age * (int)(e->reliability_final - max) / e->duration_phase_3 + max;
truelight@0: 	} else {
bjarni@4767: 		/* time's up for this engine.
bjarni@4767: 		 * We will now completely retire this design */
bjarni@4767: 		e->player_avail = 0;
truelight@0: 		e->reliability = e->reliability_final;
bjarni@5944: 		/* Kick this engine out of the lists */
bjarni@5944: 		AddRemoveEngineFromAutoreplaceAndBuildWindows(e->type);
truelight@0: 	}
bjarni@4767: 	InvalidateWindowClasses(WC_BUILD_VEHICLE); // Update to show the new reliability
bjarni@5944: 	InvalidateWindowClasses(WC_REPLACE_VEHICLE);
truelight@0: }
truelight@0: 
rubidium@6247: void StartupEngines()
truelight@0: {
truelight@0: 	Engine *e;
truelight@0: 	const EngineInfo *ei;
truelight@4300: 	/* Aging of vehicles stops, so account for that when starting late */
rubidium@4322: 	const Date aging_date = min(_date, ConvertYMDToDate(YEAR_ENGINE_AGING_STOPS, 0, 1));
truelight@0: 
tron@2242: 	for (e = _engines, ei = _engine_info; e != endof(_engines); e++, ei++) {
tron@2242: 		uint32 r;
truelight@0: 
truelight@0: 		e->age = 0;
truelight@0: 		e->flags = 0;
truelight@0: 		e->player_avail = 0;
truelight@193: 
belugas@6125: 		/* The magic value of 729 days below comes from the NewGRF spec. If the
belugas@6125: 		 * base intro date is before 1922 then the random number of days is not
belugas@6125: 		 * added. */
truelight@0: 		r = Random();
rubidium@4297: 		e->intro_date = ei->base_intro <= ConvertYMDToDate(1922, 0, 1) ? ei->base_intro : (Date)GB(r, 0, 9) + ei->base_intro;
truelight@0: 		if (e->intro_date <= _date) {
truelight@4300: 			e->age = (aging_date - e->intro_date) >> 5;
truelight@0: 			e->player_avail = (byte)-1;
truelight@0: 			e->flags |= ENGINE_AVAILABLE;
truelight@0: 		}
truelight@0: 
tron@2140: 		e->reliability_start = GB(r, 16, 14) + 0x7AE0;
truelight@0: 		r = Random();
tron@2140: 		e->reliability_max   = GB(r,  0, 14) + 0xBFFF;
tron@2140: 		e->reliability_final = GB(r, 16, 14) + 0x3FFF;
truelight@0: 
truelight@0: 		r = Random();
tron@2140: 		e->duration_phase_1 = GB(r, 0, 5) + 7;
tron@2140: 		e->duration_phase_2 = GB(r, 5, 4) + ei->base_life * 12 - 96;
tron@2140: 		e->duration_phase_3 = GB(r, 9, 7) + 120;
truelight@0: 
truelight@0: 		e->reliability_spd_dec = (ei->unk2&0x7F) << 2;
truelight@0: 
truelight@0: 		/* my invented flag for something that is a wagon */
truelight@0: 		if (ei->unk2 & 0x80) {
truelight@0: 			e->age = 0xFFFF;
truelight@0: 		} else {
truelight@0: 			CalcEngineReliability(e);
truelight@0: 		}
truelight@0: 
truelight@0: 		e->lifelength = ei->lifelength + _patches.extend_vehicle_life;
truelight@0: 
belugas@6125: 		/* prevent certain engines from ever appearing. */
skidd13@7928: 		if (!HasBit(ei->climates, _opt.landscape)) {
truelight@0: 			e->flags |= ENGINE_AVAILABLE;
truelight@0: 			e->player_avail = 0;
truelight@0: 		}
tron@915: 
bjarni@819: 		/* This sets up type for the engine
rubidium@4549: 		 * It is needed if you want to ask the engine what type it is
rubidium@4549: 		 * It should hopefully be the same as when you ask a vehicle what it is
rubidium@4549: 		 * but using this, you can ask what type an engine number is
rubidium@4549: 		 * even if it is not a vehicle (yet)*/
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@5823: static void AcceptEnginePreview(EngineID eid, PlayerID player)
truelight@0: {
tron@5823: 	Engine *e = GetEngine(eid);
rubidium@6685: 	Player *p = GetPlayer(player);
truelight@0: 
skidd13@7931: 	SetBit(e->player_avail, player);
rubidium@6259: 	if (e->type == VEH_TRAIN) {
tron@5823: 		const RailVehicleInfo *rvi = RailVehInfo(eid);
tron@5823: 
tron@5823: 		assert(rvi->railtype < RAILTYPE_END);
skidd13@7931: 		SetBit(p->avail_railtypes, rvi->railtype);
rubidium@6685: 	} else if (e->type == VEH_ROAD) {
skidd13@7931: 		SetBit(p->avail_roadtypes, HasBit(EngInfo(eid)->misc_flags, EF_ROAD_TRAM) ? ROADTYPE_TRAM : ROADTYPE_ROAD);
tron@5823: 	}
truelight@0: 
rubidium@5587: 	e->preview_player = INVALID_PLAYER;
bjarni@4766: 	if (player == _local_player) {
bjarni@5944: 		AddRemoveEngineFromAutoreplaceAndBuildWindows(e->type);
bjarni@4766: 	}
truelight@0: }
truelight@0: 
Darkvater@1786: static PlayerID GetBestPlayer(PlayerID pp)
Darkvater@1786: {
Darkvater@1786: 	const Player *p;
Darkvater@1786: 	int32 best_hist;
Darkvater@1786: 	PlayerID best_player;
Darkvater@1786: 	uint mask = 0;
Darkvater@1786: 
Darkvater@1786: 	do {
Darkvater@1786: 		best_hist = -1;
Darkvater@4848: 		best_player = PLAYER_SPECTATOR;
Darkvater@1786: 		FOR_ALL_PLAYERS(p) {
skidd13@7928: 			if (p->is_active && p->block_preview == 0 && !HasBit(mask, p->index) &&
Darkvater@1786: 					p->old_economy[0].performance_history > best_hist) {
Darkvater@1786: 				best_hist = p->old_economy[0].performance_history;
Darkvater@1786: 				best_player = p->index;
Darkvater@1786: 			}
Darkvater@1786: 		}
Darkvater@1786: 
Darkvater@4848: 		if (best_player == PLAYER_SPECTATOR) return PLAYER_SPECTATOR;
Darkvater@1786: 
skidd13@7931: 		SetBit(mask, best_player);
rubidium@5587: 	} while (pp--, pp != 0);
Darkvater@1786: 
Darkvater@1786: 	return best_player;
Darkvater@1786: }
Darkvater@1786: 
rubidium@6247: void EnginesDailyLoop()
truelight@0: {
tron@2477: 	EngineID i;
truelight@0: 
truelight@4300: 	if (_cur_year >= YEAR_ENGINE_AGING_STOPS) return;
truelight@0: 
tron@2242: 	for (i = 0; i != lengthof(_engines); i++) {
belugas@4171: 		Engine *e = &_engines[i];
tron@2242: 
maedhros@6174: 		if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) {
maedhros@6174: 			if (e->flags & ENGINE_OFFER_WINDOW_OPEN) {
truelight@740: 				if (e->preview_player != 0xFF && !--e->preview_wait) {
maedhros@6174: 					e->flags &= ~ENGINE_OFFER_WINDOW_OPEN;
truelight@0: 					DeleteWindowById(WC_ENGINE_PREVIEW, i);
truelight@0: 					e->preview_player++;
truelight@193: 				}
tron@4077: 			} else if (e->preview_player != 0xFF) {
Darkvater@1786: 				PlayerID best_player = GetBestPlayer(e->preview_player);
Darkvater@1786: 
Darkvater@4848: 				if (best_player == PLAYER_SPECTATOR) {
rubidium@5587: 					e->preview_player = INVALID_PLAYER;
Darkvater@1786: 					continue;
Darkvater@1786: 				}
truelight@193: 
Darkvater@4845: 				if (!IsHumanPlayer(best_player)) {
Darkvater@1786: 					/* XXX - TTDBUG: TTD has a bug here ???? */
tron@5823: 					AcceptEnginePreview(i, best_player);
truelight@0: 				} else {
maedhros@6174: 					e->flags |= ENGINE_OFFER_WINDOW_OPEN;
truelight@0: 					e->preview_wait = 20;
Darkvater@4845: 					if (IsInteractivePlayer(best_player)) ShowEnginePreviewWindow(i);
truelight@0: 				}
truelight@0: 			}
truelight@0: 		}
truelight@0: 	}
truelight@0: }
truelight@0: 
Darkvater@1786: /** Accept an engine prototype. XXX - it is possible that the top-player
Darkvater@1786:  * changes while you are waiting to accept the offer? Then it becomes invalid
tron@3491:  * @param tile unused
belugas@6481:  * @param flags operation to perfom
Darkvater@1786:  * @param p1 engine-prototype offered
Darkvater@1786:  * @param p2 unused
Darkvater@1786:  */
rubidium@6943: CommandCost CmdWantEnginePreview(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
Darkvater@1786: 	Engine *e;
tron@2951: 
Darkvater@1786: 	if (!IsEngineIndex(p1)) return CMD_ERROR;
tron@1926: 	e = GetEngine(p1);
Darkvater@1786: 	if (GetBestPlayer(e->preview_player) != _current_player) return CMD_ERROR;
Darkvater@1786: 
tron@5823: 	if (flags & DC_EXEC) AcceptEnginePreview(p1, _current_player);
Darkvater@1786: 
rubidium@6950: 	return CommandCost();
truelight@0: }
truelight@0: 
belugas@6125: /* Determine if an engine type is a wagon (and not a loco) */
tron@2477: static bool IsWagon(EngineID index)
dominik@257: {
belugas@5868: 	return index < NUM_TRAIN_ENGINES && RailVehInfo(index)->railveh_type == RAILVEH_WAGON;
dominik@257: }
dominik@257: 
tron@410: static void NewVehicleAvailable(Engine *e)
truelight@0: {
truelight@0: 	Vehicle *v;
truelight@0: 	Player *p;
tron@2477: 	EngineID index = e - _engines;
truelight@0: 
belugas@6125: 	/* In case the player didn't build the vehicle during the intro period,
belugas@6125: 	 * prevent that player from getting future intro periods for a while. */
maedhros@6174: 	if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) {
truelight@0: 		FOR_ALL_PLAYERS(p) {
truelight@919: 			uint block_preview = p->block_preview;
truelight@919: 
skidd13@7928: 			if (!HasBit(e->player_avail, p->index)) continue;
truelight@193: 
truelight@919: 			/* We assume the user did NOT build it.. prove me wrong ;) */
truelight@919: 			p->block_preview = 20;
truelight@919: 
truelight@919: 			FOR_ALL_VEHICLES(v) {
rubidium@6259: 				if (v->type == VEH_TRAIN || v->type == VEH_ROAD || v->type == VEH_SHIP ||
rubidium@6259: 						(v->type == VEH_AIRCRAFT && IsNormalAircraft(v))) {
truelight@919: 					if (v->owner == p->index && v->engine_type == index) {
truelight@919: 						/* The user did prove me wrong, so restore old value */
truelight@919: 						p->block_preview = block_preview;
truelight@919: 						break;
truelight@919: 					}
truelight@0: 				}
truelight@0: 			}
truelight@0: 		}
truelight@0: 	}
truelight@0: 
maedhros@6174: 	e->flags = (e->flags & ~ENGINE_EXCLUSIVE_PREVIEW) | ENGINE_AVAILABLE;
bjarni@5944: 	AddRemoveEngineFromAutoreplaceAndBuildWindows(e->type);
dominik@114: 
belugas@6125: 	/* Now available for all players */
truelight@0: 	e->player_avail = (byte)-1;
dominik@114: 
belugas@6125: 	/* Do not introduce new rail wagons */
tron@2639: 	if (IsWagon(index)) return;
dominik@114: 
peter1138@8220: 	if (e->type == VEH_TRAIN) {
belugas@6125: 		/* maybe make another rail type available */
tron@5823: 		RailType railtype = RailVehInfo(index)->railtype;
tron@5823: 		assert(railtype < RAILTYPE_END);
tron@5823: 		FOR_ALL_PLAYERS(p) {
skidd13@7931: 			if (p->is_active) SetBit(p->avail_railtypes, railtype);
celestar@2147: 		}
peter1138@8220: 	} else if (e->type == VEH_ROAD) {
rubidium@6686: 		/* maybe make another road type available */
rubidium@6686: 		FOR_ALL_PLAYERS(p) {
skidd13@7931: 			if (p->is_active) SetBit(p->avail_roadtypes, HasBit(EngInfo(index)->misc_flags, EF_ROAD_TRAM) ? ROADTYPE_TRAM : ROADTYPE_ROAD);
rubidium@6686: 		}
rubidium@6686: 	}
rubidium@6209: 	AddNewsItem(index, NEWS_FLAGS(NM_CALLBACK, 0, NT_NEW_VEHICLES, DNC_VEHICLEAVAIL), 0, 0);
truelight@0: }
truelight@0: 
rubidium@6247: void EnginesMonthlyLoop()
truelight@0: {
truelight@0: 	Engine *e;
truelight@0: 
truelight@4300: 	if (_cur_year < YEAR_ENGINE_AGING_STOPS) {
tron@2242: 		for (e = _engines; e != endof(_engines); e++) {
belugas@6125: 			/* Age the vehicle */
tron@2242: 			if (e->flags & ENGINE_AVAILABLE && e->age != 0xFFFF) {
truelight@0: 				e->age++;
truelight@0: 				CalcEngineReliability(e);
truelight@0: 			}
truelight@0: 
peter1138@2990: 			if (!(e->flags & ENGINE_AVAILABLE) && _date >= (e->intro_date + 365)) {
belugas@6125: 				/* Introduce it to all players */
truelight@0: 				NewVehicleAvailable(e);
maedhros@6174: 			} else if (!(e->flags & (ENGINE_AVAILABLE|ENGINE_EXCLUSIVE_PREVIEW)) && _date >= e->intro_date) {
belugas@6125: 				/* Introduction date has passed.. show introducing dialog to one player. */
maedhros@6174: 				e->flags |= ENGINE_EXCLUSIVE_PREVIEW;
dominik@257: 
belugas@6125: 				/* Do not introduce new rail wagons */
tron@964: 				if (!IsWagon(e - _engines))
rubidium@5587: 					e->preview_player = (PlayerID)1; // Give to the player with the highest rating.
truelight@0: 			}
truelight@0: 		}
truelight@0: 	}
truelight@0: }
truelight@0: 
peter1138@7097: static bool IsUniqueEngineName(const char *name)
peter1138@7097: {
peter1138@7097: 	char buf[512];
peter1138@7097: 
peter1138@7097: 	for (EngineID i = 0; i < TOTAL_NUM_ENGINES; i++) {
peter1138@7097: 		SetDParam(0, i);
peter1138@7097: 		GetString(buf, STR_ENGINE_NAME, lastof(buf));
peter1138@7097: 		if (strcmp(buf, name) == 0) return false;
peter1138@7097: 	}
peter1138@7097: 
peter1138@7097: 	return true;
peter1138@7097: }
peter1138@7097: 
Darkvater@1786: /** Rename an engine.
tron@3491:  * @param tile unused
belugas@6481:  * @param flags operation to perfom
Darkvater@1786:  * @param p1 engine ID to rename
Darkvater@1786:  * @param p2 unused
Darkvater@1786:  */
rubidium@6943: CommandCost CmdRenameEngine(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
peter1138@7097: 	if (!IsEngineIndex(p1) || StrEmpty(_cmd_text)) return CMD_ERROR;
Darkvater@1786: 
peter1138@7097: 	if (!IsUniqueEngineName(_cmd_text)) return_cmd_error(STR_NAME_MUST_BE_UNIQUE);
peter1138@7097: 
truelight@0: 	if (flags & DC_EXEC) {
peter1138@8258: 		Engine *e = GetEngine(p1);
peter1138@8258: 		free(e->name);
peter1138@8258: 		e->name = strdup(_cmd_text);
truelight@0: 		_vehicle_design_names |= 3;
truelight@0: 		MarkWholeScreenDirty();
truelight@0: 	}
truelight@0: 
rubidium@6950: 	return CommandCost();
truelight@0: }
truelight@0: 
truelight@0: 
peter1138@2848: /*
peter1138@2848:  * returns true if an engine is valid, of the specified type, and buildable by
peter1138@5215:  * the given player, false otherwise
peter1138@2848:  *
peter1138@2848:  * engine = index of the engine to check
peter1138@2848:  * type   = the type the engine should be of (VEH_xxx)
peter1138@5215:  * player = index of the player
peter1138@2848:  */
peter1138@5215: bool IsEngineBuildable(EngineID engine, byte type, PlayerID player)
peter1138@2848: {
peter1138@2848: 	const Engine *e;
peter1138@2848: 
belugas@6125: 	/* check if it's an engine that is in the engine array */
peter1138@2848: 	if (!IsEngineIndex(engine)) return false;
peter1138@2848: 
peter1138@2848: 	e = GetEngine(engine);
peter1138@2848: 
belugas@6125: 	/* check if it's an engine of specified type */
peter1138@2848: 	if (e->type != type) return false;
peter1138@2848: 
belugas@6125: 	/* check if it's available */
skidd13@7928: 	if (!HasBit(e->player_avail, player)) return false;
peter1138@2848: 
peter1138@6530: 	if (type == VEH_TRAIN) {
peter1138@6530: 		/* Check if the rail type is available to this player */
peter1138@6530: 		const Player *p = GetPlayer(player);
skidd13@7928: 		if (!HasBit(p->avail_railtypes, RailVehInfo(engine)->railtype)) return false;
peter1138@6530: 	}
peter1138@6530: 
peter1138@2848: 	return true;
peter1138@2848: }
peter1138@2848: 
bjarni@6505: /** Get the default cargo type for a certain engine type
bjarni@6505:  * @param engine The ID to get the cargo for
bjarni@6505:  * @return The cargo type. CT_INVALID means no cargo capacity
bjarni@6505:  */
bjarni@6505: CargoID GetEngineCargoType(EngineID engine)
bjarni@6505: {
bjarni@6505: 	assert(IsEngineIndex(engine));
bjarni@6505: 
bjarni@6505: 	switch (GetEngine(engine)->type) {
bjarni@6505: 		case VEH_TRAIN:
bjarni@6505: 			if (RailVehInfo(engine)->capacity == 0) return CT_INVALID;
bjarni@6505: 			return RailVehInfo(engine)->cargo_type;
bjarni@6505: 
bjarni@6505: 		case VEH_ROAD:
bjarni@6505: 			if (RoadVehInfo(engine)->capacity == 0) return CT_INVALID;
bjarni@6505: 			return RoadVehInfo(engine)->cargo_type;
bjarni@6505: 
bjarni@6505: 		case VEH_SHIP:
bjarni@6505: 			if (ShipVehInfo(engine)->capacity == 0) return CT_INVALID;
bjarni@6505: 			return ShipVehInfo(engine)->cargo_type;
bjarni@6505: 
bjarni@6505: 		case VEH_AIRCRAFT:
bjarni@6505: 			/* all aircraft starts as passenger planes with cargo capacity */
bjarni@6505: 			return CT_PASSENGERS;
bjarni@6505: 
bjarni@6505: 		default: NOT_REACHED(); return CT_INVALID;
bjarni@6505: 	}
bjarni@6505: }
bjarni@6505: 
peter1138@2848: /************************************************************************
peter1138@2848:  * Engine Replacement stuff
peter1138@2848:  ************************************************************************/
peter1138@2848: 
rubidium@7388: DEFINE_OLD_POOL_GENERIC(EngineRenew, EngineRenew)
peter1138@2848: 
peter1138@2848: /**
peter1138@2848:  * Retrieves the EngineRenew that specifies the replacement of the given
peter1138@2848:  * engine type from the given renewlist */
rubidium@6643: static EngineRenew *GetEngineReplacement(EngineRenewList erl, EngineID engine, GroupID group)
peter1138@2848: {
truelight@4348: 	EngineRenew *er = (EngineRenew *)erl;
truelight@4348: 
peter1138@2848: 	while (er) {
rubidium@6643: 		if (er->from == engine && er->group_id == group) return er;
peter1138@2848: 		er = er->next;
peter1138@2848: 	}
peter1138@2848: 	return NULL;
peter1138@2848: }
peter1138@2848: 
belugas@4171: void RemoveAllEngineReplacement(EngineRenewList *erl)
peter1138@2848: {
truelight@4348: 	EngineRenew *er = (EngineRenew *)(*erl);
truelight@4384: 	EngineRenew *next;
truelight@4348: 
rubidium@7388: 	while (er != NULL) {
truelight@4384: 		next = er->next;
rubidium@7388: 		delete er;
truelight@4384: 		er = next;
peter1138@2848: 	}
truelight@4348: 	*erl = NULL; // Empty list
peter1138@2848: }
peter1138@2848: 
rubidium@6643: EngineID EngineReplacement(EngineRenewList erl, EngineID engine, GroupID group)
peter1138@2848: {
rubidium@6643: 	const EngineRenew *er = GetEngineReplacement(erl, engine, group);
bjarni@8307: 	if (er == NULL && (group == DEFAULT_GROUP || (IsValidGroupID(group) && !GetGroup(group)->replace_protection))) {
bjarni@8307: 		/* We didn't find anything useful in the vehicle's own group so we will try ALL_GROUP */
bjarni@8307: 		er = GetEngineReplacement(erl, engine, ALL_GROUP);
bjarni@8307: 	}
peter1138@2848: 	return er == NULL ? INVALID_ENGINE : er->to;
peter1138@2848: }
peter1138@2848: 
rubidium@6943: CommandCost AddEngineReplacement(EngineRenewList *erl, EngineID old_engine, EngineID new_engine, GroupID group, uint32 flags)
peter1138@2848: {
peter1138@2848: 	EngineRenew *er;
peter1138@2848: 
truelight@4348: 	/* Check if the old vehicle is already in the list */
rubidium@6643: 	er = GetEngineReplacement(*erl, old_engine, group);
peter1138@2848: 	if (er != NULL) {
peter1138@2848: 		if (flags & DC_EXEC) er->to = new_engine;
rubidium@6950: 		return CommandCost();
peter1138@2848: 	}
peter1138@2848: 
rubidium@7388: 	er = new EngineRenew(old_engine, new_engine);
peter1138@2848: 	if (er == NULL) return CMD_ERROR;
rubidium@7388: 	AutoPtrT<EngineRenew> er_auto_delete = er;
rubidium@7388: 
peter1138@2848: 
peter1138@2848: 	if (flags & DC_EXEC) {
rubidium@6643: 		er->group_id = group;
peter1138@2848: 
truelight@4348: 		/* Insert before the first element */
truelight@4348: 		er->next = (EngineRenew *)(*erl);
truelight@4348: 		*erl = (EngineRenewList)er;
rubidium@7388: 
rubidium@7388: 		er_auto_delete.Detach();
peter1138@2848: 	}
peter1138@2848: 
rubidium@6950: 	return CommandCost();
peter1138@2848: }
peter1138@2848: 
rubidium@6943: CommandCost RemoveEngineReplacement(EngineRenewList *erl, EngineID engine, GroupID group, uint32 flags)
peter1138@2848: {
truelight@4348: 	EngineRenew *er = (EngineRenew *)(*erl);
belugas@4171: 	EngineRenew *prev = NULL;
peter1138@2848: 
peter1138@2848: 	while (er)
peter1138@2848: 	{
rubidium@6643: 		if (er->from == engine && er->group_id == group) {
peter1138@2848: 			if (flags & DC_EXEC) {
truelight@4348: 				if (prev == NULL) { // First element
truelight@4348: 					/* The second becomes the new first element */
truelight@4348: 					*erl = (EngineRenewList)er->next;
peter1138@2848: 				} else {
truelight@4348: 					/* Cut this element out */
truelight@4348: 					prev->next = er->next;
peter1138@2848: 				}
rubidium@7388: 				delete er;
peter1138@2848: 			}
rubidium@6950: 			return CommandCost();
peter1138@2848: 		}
peter1138@2848: 		prev = er;
truelight@4348: 		er = er->next;
peter1138@2848: 	}
peter1138@2848: 
truelight@4348: 	return CMD_ERROR;
peter1138@2848: }
peter1138@2848: 
peter1138@2848: static const SaveLoad _engine_renew_desc[] = {
rubidium@6643: 	    SLE_VAR(EngineRenew, from,     SLE_UINT16),
rubidium@6643: 	    SLE_VAR(EngineRenew, to,       SLE_UINT16),
peter1138@2848: 
rubidium@6643: 	    SLE_REF(EngineRenew, next,     REF_ENGINE_RENEWS),
rubidium@6643: 	SLE_CONDVAR(EngineRenew, group_id, SLE_UINT16, 60, SL_MAX_VERSION),
peter1138@2848: 	SLE_END()
peter1138@2848: };
peter1138@2848: 
rubidium@6247: static void Save_ERNW()
peter1138@2848: {
peter1138@2848: 	EngineRenew *er;
peter1138@2848: 
peter1138@2848: 	FOR_ALL_ENGINE_RENEWS(er) {
truelight@4348: 		SlSetArrayIndex(er->index);
truelight@4348: 		SlObject(er, _engine_renew_desc);
peter1138@2848: 	}
peter1138@2848: }
peter1138@2848: 
rubidium@6247: static void Load_ERNW()
peter1138@2848: {
peter1138@2848: 	int index;
peter1138@2848: 
peter1138@2848: 	while ((index = SlIterateArray()) != -1) {
rubidium@7388: 		EngineRenew *er = new (index) EngineRenew();
peter1138@2848: 		SlObject(er, _engine_renew_desc);
rubidium@6643: 
rubidium@7258: 		/* Advanced vehicle lists, ungrouped vehicles got added */
rubidium@7258: 		if (CheckSavegameVersion(60)) {
rubidium@7258: 			er->group_id = ALL_GROUP;
rubidium@7258: 		} else if (CheckSavegameVersion(71)) {
rubidium@7258: 			if (er->group_id == DEFAULT_GROUP) er->group_id = ALL_GROUP;
rubidium@7258: 		}
peter1138@2848: 	}
peter1138@2848: }
peter1138@2848: 
Darkvater@1881: static const SaveLoad _engine_desc[] = {
rubidium@4344: 	SLE_CONDVAR(Engine, intro_date,          SLE_FILE_U16 | SLE_VAR_I32,  0,  30),
rubidium@4344: 	SLE_CONDVAR(Engine, intro_date,          SLE_INT32,                  31, SL_MAX_VERSION),
rubidium@4344: 	SLE_CONDVAR(Engine, age,                 SLE_FILE_U16 | SLE_VAR_I32,  0,  30),
rubidium@4344: 	SLE_CONDVAR(Engine, age,                 SLE_INT32,                  31, SL_MAX_VERSION),
rubidium@4344: 	    SLE_VAR(Engine, reliability,         SLE_UINT16),
rubidium@4344: 	    SLE_VAR(Engine, reliability_spd_dec, SLE_UINT16),
rubidium@4344: 	    SLE_VAR(Engine, reliability_start,   SLE_UINT16),
rubidium@4344: 	    SLE_VAR(Engine, reliability_max,     SLE_UINT16),
rubidium@4344: 	    SLE_VAR(Engine, reliability_final,   SLE_UINT16),
rubidium@4344: 	    SLE_VAR(Engine, duration_phase_1,    SLE_UINT16),
rubidium@4344: 	    SLE_VAR(Engine, duration_phase_2,    SLE_UINT16),
rubidium@4344: 	    SLE_VAR(Engine, duration_phase_3,    SLE_UINT16),
truelight@0: 
rubidium@4344: 	    SLE_VAR(Engine, lifelength,          SLE_UINT8),
rubidium@4344: 	    SLE_VAR(Engine, flags,               SLE_UINT8),
rubidium@4344: 	    SLE_VAR(Engine, preview_player,      SLE_UINT8),
rubidium@4344: 	    SLE_VAR(Engine, preview_wait,        SLE_UINT8),
tron@5823: 	SLE_CONDNULL(1, 0, 44),
rubidium@4344: 	    SLE_VAR(Engine, player_avail,        SLE_UINT8),
peter1138@8258: 	SLE_CONDSTR(Engine, name,                SLE_STR, 0,                 84, SL_MAX_VERSION),
truelight@0: 
belugas@6125: 	/* reserve extra space in savegame here. (currently 16 bytes) */
Darkvater@3222: 	SLE_CONDNULL(16, 2, SL_MAX_VERSION),
truelight@0: 
truelight@0: 	SLE_END()
truelight@0: };
truelight@0: 
rubidium@6247: static void Save_ENGN()
truelight@0: {
tron@2242: 	uint i;
tron@2242: 
tron@2242: 	for (i = 0; i != lengthof(_engines); i++) {
truelight@0: 		SlSetArrayIndex(i);
tron@2242: 		SlObject(&_engines[i], _engine_desc);
truelight@0: 	}
truelight@0: }
truelight@0: 
rubidium@6247: static void Load_ENGN()
truelight@0: {
truelight@0: 	int index;
truelight@0: 	while ((index = SlIterateArray()) != -1) {
tron@1926: 		SlObject(GetEngine(index), _engine_desc);
truelight@0: 	}
truelight@0: }
truelight@0: 
peter1138@8258: static void Load_ENGS()
truelight@0: {
peter1138@8258: 	StringID names[TOTAL_NUM_ENGINES];
peter1138@8258: 
peter1138@8258: 	SlArray(names, lengthof(names), SLE_STRINGID);
peter1138@8258: 
peter1138@8258: 	for (EngineID engine = 0; engine < lengthof(names); engine++) {
peter1138@8258: 		Engine *e = GetEngine(engine);
peter1138@8258: 		e->name = CopyFromOldName(names[engine]);
peter1138@8258: 	}
truelight@0: }
truelight@0: 
rubidium@5587: extern const ChunkHandler _engine_chunk_handlers[] = {
peter1138@2848: 	{ 'ENGN', Save_ENGN,     Load_ENGN,     CH_ARRAY          },
peter1138@8258: 	{ 'ENGS', NULL,          Load_ENGS,     CH_RIFF           },
peter1138@2848: 	{ 'ERNW', Save_ERNW,     Load_ERNW,     CH_ARRAY | CH_LAST},
truelight@0: };
truelight@0: 
rubidium@6247: void InitializeEngines()
tron@1197: {
peter1138@2848: 	/* Clean the engine renew pool and create 1 block in it */
rubidium@7388: 	_EngineRenew_pool.CleanPool();
rubidium@7388: 	_EngineRenew_pool.AddBlockToPool();
peter1138@8258: 
peter1138@8258: 	Engine *e;
peter1138@8258: 	FOR_ALL_ENGINES(e) {
peter1138@8258: 		free(e->name);
peter1138@8258: 		e->name = NULL;
peter1138@8258: 	}
bjarni@1196: }