truelight@0: #include "stdafx.h"
truelight@0: #include "ttd.h"
tron@507: #include "table/strings.h"
tron@679: #include "map.h"
tron@1209: #include "tile.h"
truelight@0: #include "vehicle.h"
truelight@0: #include "command.h"
truelight@0: #include "pathfind.h"
matthijs@1247: #include "npf.h"
truelight@0: #include "station.h"
truelight@0: #include "table/train_cmd.h"
truelight@0: #include "gfx.h"
truelight@0: #include "news.h"
truelight@0: #include "engine.h"
truelight@0: #include "player.h"
tron@337: #include "sound.h"
truelight@1313: #include "depot.h"
truelight@0: 
truelight@0: #define is_firsthead_sprite(spritenum) \
truelight@0: 	(is_custom_sprite(spritenum) \
truelight@0: 		? is_custom_firsthead_sprite(spritenum) \
truelight@0: 		: _engine_sprite_add[spritenum] == 0)
truelight@0: 
truelight@742: static bool TrainCheckIfLineEnds(Vehicle *v);
truelight@0: 
truelight@0: static const byte _vehicle_initial_x_fract[4] = {10,8,4,8};
truelight@0: static const byte _vehicle_initial_y_fract[4] = {8,4,8,10};
truelight@0: static const byte _state_dir_table[4] = { 0x20, 8, 0x10, 4 };
truelight@0: 
matthijs@1247: 
matthijs@1247: /* These two arrays are used for realistic acceleration. XXX: How should they
matthijs@1247:  * be interpreted? */
celestar@1179: static const byte _curve_neighbours45[8][2] = {
celestar@1179: 	{7, 1},
celestar@1179: 	{0, 2},
celestar@1179: 	{1, 3},
celestar@1179: 	{2, 4},
celestar@1179: 	{3, 5},
celestar@1179: 	{4, 6},
celestar@1179: 	{5, 7},
celestar@1179: 	{6, 0},
celestar@1179: };
celestar@1179: 
celestar@1179: static const byte _curve_neighbours90[8][2] = {
celestar@1179: 	{6, 2},
celestar@1179: 	{7, 3},
celestar@1179: 	{0, 4},
celestar@1179: 	{1, 5},
celestar@1179: 	{2, 6},
celestar@1179: 	{3, 7},
celestar@1179: 	{4, 0},
celestar@1179: 	{5, 1},
celestar@1179: };
celestar@1179: 
celestar@1179: enum AccelType {
celestar@1179: 	AM_ACCEL,
celestar@1179: 	AM_BRAKE
celestar@1179: };
celestar@1179: 
celestar@1236: static bool TrainShouldStop(Vehicle *v, TileIndex tile)
celestar@1236: {
celestar@1236: 	Order *o = &v->current_order;
celestar@1236: 	assert(v->type == VEH_Train);
celestar@1236: 	assert(IsTileType(v->tile, MP_STATION));
celestar@1236: 	//When does a train drive through a station
celestar@1236: 	//first we deal with the "new nonstop handling"
celestar@1236: 	if ( _patches.new_nonstop && o->flags & OF_NON_STOP && _map2[tile] == o->station )
celestar@1236: 		return false;
celestar@1236: 
celestar@1236: 	if (v->last_station_visited == _map2[tile])
celestar@1236: 		return false;
celestar@1236: 
celestar@1236: 	if ( _map2[tile] != o->station && (o->flags & OF_NON_STOP || _patches.new_nonstop))
celestar@1236: 		return false;
celestar@1236: 
celestar@1236: 	return true;
celestar@1236: }
celestar@1236: 
celestar@1179: //new acceleration
celestar@1179: static int GetTrainAcceleration(Vehicle *v, bool mode)
celestar@1179: {
celestar@1179: 	Vehicle *u = v;
celestar@1179: 	int num = 0;	//number of vehicles, change this into the number of axles later
celestar@1179: 	int power = 0;
celestar@1179: 	int mass = 0;
celestar@1179: 	int max_speed = 2000;
celestar@1179: 	int area = 120;
celestar@1179: 	int friction = 35; //[1e-3]
celestar@1179: 	int drag_coeff = 20;	//[1e-4]
celestar@1179: 	int incl = 0;
celestar@1179: 	int resistance;
celestar@1179: 	int speed = v->cur_speed; //[mph]
celestar@1179: 	int force = 0x3FFFFFFF;
celestar@1179: 	int pos = 0;
celestar@1179: 	int lastpos = -1;
celestar@1179: 	int curvecount[2] = {0, 0};
celestar@1179: 	int *dist = NULL;
celestar@1179: 	int sum = 0;
celestar@1179: 	int numcurve = 0;
celestar@1179: 	int i;
celestar@1179: 
celestar@1179: 	speed *= 10;
celestar@1179: 	speed /= 16;
celestar@1179: 
celestar@1179: 	//first find the curve speed limit
celestar@1179: 	for (; u->next != NULL; u = u->next, pos++) {
celestar@1179: 		int dir = u->direction;
celestar@1179: 		int ndir = u->next->direction;
celestar@1179: 
celestar@1179: 		for (i = 0; i < 2; i++) {
celestar@1179: 			if ( _curve_neighbours45[dir][i] == ndir) {
celestar@1179: 				curvecount[i]++;
celestar@1179: 				if (lastpos != -1) {
celestar@1179: 					dist = realloc(dist, sizeof(int) * ++numcurve);
celestar@1179: 					dist[numcurve - 1] = pos - lastpos;
celestar@1179: 					if (pos - lastpos == 1) {
celestar@1179: 						max_speed = 88;
celestar@1179: 					}
celestar@1179: 				}
celestar@1179: 				lastpos = pos;
celestar@1179: 			}
celestar@1179: 		}
celestar@1179: 
celestar@1179: 		//if we have a 90 degree turn, fix the speed limit to 60
celestar@1179: 		if ( _curve_neighbours90[dir][0] == ndir || _curve_neighbours90[dir][1] == ndir) {
celestar@1179: 			max_speed = 61;
celestar@1179: 		}
celestar@1179: 	}
celestar@1179: 
celestar@1179: 	for(i = 0; i < numcurve; i++) {
celestar@1179: 		sum += dist[i];
celestar@1179: 	}
celestar@1179: 
celestar@1179: 	if (numcurve > 0) {
celestar@1179: 		sum /= numcurve;
celestar@1179: 	}
celestar@1179: 
celestar@1179: 	if ((curvecount[0] != 0 || curvecount[1] != 0) && (max_speed > 88)) {
celestar@1179: 		int total = curvecount[0] + curvecount[1];
celestar@1179: 		if (curvecount[0] == 1 && curvecount[1] == 1) {
celestar@1179: 			max_speed = 0xFFFF;
celestar@1179: 		} else if (total > 1) {
celestar@1179: 			max_speed = 232 - (13 - clamp(sum, 1, 12)) * (13 - clamp(sum, 1, 12));
celestar@1179: 		}
celestar@1179: 	}
celestar@1179: 
celestar@1179: 	max_speed += (max_speed / 2) * v->u.rail.railtype;
celestar@1179: 
celestar@1179: 	if (IsTileType(v->tile, MP_STATION) && v->subtype == TS_Front_Engine) {
celestar@1179: 		static const TileIndexDiffC _station_dir_from_vdir[] = {
celestar@1179: 			{0, 0}, {-1, 0}, {0, 0}, {0, 1}, {0, 0}, {1, 0}, {0, 0}, {0, -1}
celestar@1179: 		};
celestar@1179: 
celestar@1236: 		if (TrainShouldStop(v, v->tile)) {
celestar@1179: 			int station_length = 0;
celestar@1179: 			TileIndex tile = v->tile;
celestar@1179: 			int delta_v;
celestar@1179: 
celestar@1179: 			max_speed = 120;
celestar@1179: 			do {
celestar@1179: 				station_length++;
celestar@1179: 				tile = TILE_ADD(tile, ToTileIndexDiff(_station_dir_from_vdir[v->direction]));
celestar@1179: 			} while (IsTileType(tile, MP_STATION));
celestar@1179: 
celestar@1179: 			delta_v = v->cur_speed / (station_length + 1);
celestar@1179: 			if (v->max_speed > (v->cur_speed - delta_v))
celestar@1179: 				max_speed = v->cur_speed - (delta_v / 10);
celestar@1179: 
celestar@1179: 			max_speed = max(max_speed, 25 * station_length);
celestar@1179: 		}
celestar@1179: 	}
celestar@1179: 
celestar@1179: 	for (u = v; u != NULL; u = u->next) {
celestar@1179: 		const RailVehicleInfo *rvi = RailVehInfo(u->engine_type);
celestar@1179: 		int vmass;
celestar@1179: 
celestar@1179: 		num++;
celestar@1179: 		power += rvi->power * 746;	//[W]
celestar@1179: 		drag_coeff += 3;
celestar@1179: 
celestar@1179: 		if (rvi->max_speed != 0)
celestar@1179: 			max_speed = min(rvi->max_speed, max_speed);
celestar@1179: 
celestar@1179: 		if (u->u.rail.track == 0x80)
celestar@1179: 			max_speed = 61;
celestar@1179: 
celestar@1179: 		vmass = rvi->weight;  //[t]
celestar@1179: 		vmass += (_cargoc.weights[u->cargo_type] * u->cargo_count) / 16;
celestar@1179: 		mass += vmass; //[t]
celestar@1179: 
celestar@1179: 		if (!IsTileType(u->tile, MP_TUNNELBRIDGE)) {
celestar@1179: 			if (HASBIT(u->u.rail.flags, VRF_GOINGUP)) {
celestar@1179: 				incl += vmass * 60;		//3% slope, quite a bit actually
celestar@1179: 			} else if (HASBIT(u->u.rail.flags, VRF_GOINGDOWN)) {
celestar@1179: 				incl -= vmass * 60;
celestar@1179: 			}
celestar@1179: 		}
celestar@1179: 	}
celestar@1179: 
celestar@1179: 
celestar@1179: 	// these are shown in the UI
celestar@1179: 	v->u.rail.cached_weight = mass;
celestar@1179: 	v->u.rail.cached_power = power / 746;
celestar@1179: 	v->max_speed = max_speed;
celestar@1179: 
celestar@1179: 
celestar@1179: 	if (v->u.rail.railtype != 2) {
celestar@1179: 		resistance = 13 * mass / 10;
celestar@1179: 		resistance += 60 * num;
celestar@1179: 		resistance += friction * mass * speed / 1000;
celestar@1179: 		resistance += (area * drag_coeff * speed * speed) / 10000;
celestar@1179: 	} else
celestar@1179: 		resistance = (area * (drag_coeff / 2) * speed * speed) / 10000;
celestar@1179: 	resistance += incl;
celestar@1179: 	resistance *= 4; //[N]
celestar@1179: 
celestar@1179: 	if (speed > 0) {
celestar@1179: 		switch (v->u.rail.railtype) {
celestar@1179: 			case 0:
celestar@1179: 			case 1:
celestar@1179: 			{
celestar@1179: 				force = power / speed; //[N]
celestar@1179: 				force *= 22;
celestar@1179: 				force /= 10;
celestar@1179: 			} break;
celestar@1179: 			case 2:
celestar@1179: 				force = power / 25;
celestar@1179: 			break;
celestar@1179: 		}
celestar@1179: 	} else
celestar@1179: 		//"kickoff" acceleration
celestar@1179: 		force = resistance * 10;
celestar@1179: 
celestar@1179: 	if (force <= 0) force = 10000;
celestar@1179: 
celestar@1179: 	if (v->u.rail.railtype != 2)
celestar@1179: 		force = min(force, mass * 10 * 200);
celestar@1179: 
celestar@1179: 	if (mode == AM_ACCEL) {
celestar@1179: 		return (force - resistance) / (mass * 4);
celestar@1179: 	} else {
celestar@1179: 		return min((-force - resistance) /(mass * 4), (10000 / (mass * 4)));
celestar@1179: 	}
celestar@1179: }
celestar@1179: 
truelight@0: void UpdateTrainAcceleration(Vehicle *v)
truelight@0: {
truelight@0: 	uint acc, power=0, max_speed=5000, weight=0;
truelight@0: 	Vehicle *u = v;
truelight@0: 
bjarni@1067: 	assert(v->subtype == TS_Front_Engine);
truelight@0: 
truelight@0: 	// compute stuff like max speed, power, and weight.
truelight@0: 	do {
tron@540: 		const RailVehicleInfo *rvi = RailVehInfo(u->engine_type);
truelight@193: 
truelight@0: 		// power is sum of the power for all engines
truelight@0: 		power += rvi->power;
truelight@0: 
truelight@0: 		// limit the max speed to the speed of the slowest vehicle.
truelight@0: 		if (rvi->max_speed && rvi->max_speed <= max_speed) max_speed = rvi->max_speed;
truelight@0: 
truelight@0: 		// weight is the sum of the weight of the wagon and the weight of the cargo.
truelight@0: 		weight += rvi->weight;
truelight@0: 		weight += (_cargoc.weights[u->cargo_type] * u->cargo_count) >> 4;
truelight@0: 
truelight@0: 	} while ( (u=u->next) != NULL);
truelight@193: 
truelight@0: 	// these are shown in the UI
truelight@0: 	v->u.rail.cached_weight = weight;
truelight@0: 	v->u.rail.cached_power = power;
truelight@0: 	v->max_speed = max_speed;
truelight@0: 
truelight@0: 	assert(weight != 0);
truelight@0: 
truelight@0: 	// compute acceleration
truelight@0: 	acc = power / weight * 4;
truelight@0: 
truelight@0: 	if (acc >= 255) acc=255;
truelight@0: 	if (acc == 0) acc++;
truelight@0: 
truelight@0: 	v->acceleration = (byte)acc;
truelight@0: }
truelight@0: 
truelight@0: int GetTrainImage(Vehicle *v, byte direction)
truelight@0: {
truelight@0: 	int img = v->spritenum;
truelight@0: 	int base;
truelight@0: 
truelight@0: 	if (is_custom_sprite(img)) {
truelight@0: 		base = GetCustomVehicleSprite(v, direction + 4 * is_custom_secondhead_sprite(img));
truelight@0: 		if (base) return base;
truelight@0: 		img = _engine_original_sprites[v->engine_type];
truelight@0: 	}
truelight@193: 
truelight@0: 	base = _engine_sprite_base[img] + ((direction + _engine_sprite_add[img]) & _engine_sprite_and[img]);
truelight@0: 
truelight@0: 	if (v->cargo_count >= (v->cargo_cap >> 1))
truelight@0: 		base += _wagon_full_adder[img];
truelight@0: 	return base;
truelight@0: }
truelight@0: 
truelight@0: void DrawTrainEngine(int x, int y, int engine, uint32 image_ormod)
truelight@0: {
tron@540: 	const RailVehicleInfo *rvi = RailVehInfo(engine);
truelight@193: 
truelight@0: 	int img = rvi->image_index;
truelight@0: 	uint32 image = 0;
truelight@0: 
truelight@0: 	if (is_custom_sprite(img)) {
darkvater@358: 		image = GetCustomVehicleIcon(engine, 6);
truelight@0: 		if (!image) img = _engine_original_sprites[engine];
truelight@0: 	}
truelight@0: 	if (!image) {
truelight@0: 		image = (6 & _engine_sprite_and[img]) + _engine_sprite_base[img];
truelight@0: 	}
truelight@0: 
truelight@0: 	if (rvi->flags & RVI_MULTIHEAD) {
truelight@0: 		DrawSprite(image | image_ormod, x-14, y);
truelight@0: 		x += 15;
truelight@0: 		image = 0;
truelight@0: 		if (is_custom_sprite(img)) {
darkvater@358: 			image = GetCustomVehicleIcon(engine, 2);
truelight@0: 			if (!image) img = _engine_original_sprites[engine];
truelight@0: 		}
truelight@0: 		if (!image) {
truelight@193: 			image = ((6 + _engine_sprite_add[img+1]) & _engine_sprite_and[img+1]) + _engine_sprite_base[img+1];
truelight@0: 		}
truelight@0: 	}
truelight@0: 	DrawSprite(image | image_ormod, x, y);
truelight@0: }
truelight@0: 
truelight@0: void DrawTrainEngineInfo(int engine, int x, int y, int maxw)
truelight@0: {
tron@540: 	const RailVehicleInfo *rvi = RailVehInfo(engine);
truelight@0: 	int cap;
truelight@0: 	uint multihead = ((rvi->flags & RVI_MULTIHEAD) ? 1 : 0);
truelight@0: 
tron@534: 	SetDParam(0, ((_price.build_railvehicle >> 3) * rvi->base_cost) >> 5);
tron@534: 	SetDParam(2, rvi->max_speed * 10 >> 4);
tron@534: 	SetDParam(3, rvi->power << multihead);
tron@534: 	SetDParam(1, rvi->weight << multihead);
tron@534: 
tron@534: 	SetDParam(4, (rvi->running_cost_base * _price.running_rail[rvi->engclass] >> 8) << multihead);
truelight@193: 
truelight@0: 	cap = rvi->capacity;
tron@534: 	SetDParam(5, STR_8838_N_A);
truelight@0: 	if (cap != 0) {
tron@534: 		SetDParam(6, cap << multihead);
tron@534: 		SetDParam(5, _cargoc.names_long_p[rvi->cargo_type]);
truelight@0: 	}
truelight@0: 	DrawStringMultiCenter(x, y, STR_885B_COST_WEIGHT_T_SPEED_POWER, maxw);
truelight@0: }
truelight@0: 
truelight@0: 
tron@410: static int32 CmdBuildRailWagon(uint engine, uint tile, uint32 flags)
truelight@0: {
truelight@0: 	int32 value;
truelight@0: 	Vehicle *v;
truelight@0: 	const RailVehicleInfo *rvi;
truelight@0: 	int dir;
truelight@0: 	const Engine *e;
truelight@0: 	int x,y;
truelight@0: 
darkvater@889: 	SET_EXPENSES_TYPE(EXPENSES_NEW_VEHICLES);
darkvater@889: 
tron@540: 	rvi = RailVehInfo(engine);
truelight@0: 	value = (rvi->base_cost * _price.build_railwagon) >> 8;
truelight@0: 
truelight@0: 	if (!(flags & DC_QUERY_COST)) {
truelight@0: 		_error_message = STR_00E1_TOO_MANY_VEHICLES_IN_GAME;
truelight@0: 
truelight@0: 		v = AllocateVehicle();
truelight@0: 		if (v == NULL)
truelight@0: 			return CMD_ERROR;
truelight@0: 
truelight@0: 		if (flags & DC_EXEC) {
truelight@0: 			byte img = rvi->image_index;
truelight@919: 			Vehicle *u, *w;
truelight@0: 
truelight@0: 			v->spritenum = img;
truelight@0: 
truelight@919: 			u = NULL;
truelight@919: 
truelight@919: 			FOR_ALL_VEHICLES(w) {
truelight@919: 				if (w->type == VEH_Train && w->tile == (TileIndex)tile &&
bjarni@1067: 				    w->subtype == TS_Free_Car && w->engine_type == engine) {
truelight@919: 					u = GetLastVehicleInChain(w);
truelight@0: 					break;
truelight@0: 				}
truelight@0: 			}
truelight@0: 
truelight@0: 			v->engine_type = engine;
truelight@0: 
truelight@0: 			dir = _map5[tile] & 3;
truelight@0: 
truelight@0: 			v->direction = (byte)(dir*2+1);
truelight@0: 			v->tile = (TileIndex)tile;
truelight@193: 
tron@926: 			x = TileX(tile) * 16 | _vehicle_initial_x_fract[dir];
tron@926: 			y = TileY(tile) * 16 | _vehicle_initial_y_fract[dir];
truelight@0: 
truelight@0: 			v->x_pos = x;
truelight@0: 			v->y_pos = y;
truelight@0: 			v->z_pos = GetSlopeZ(x,y);
truelight@0: 			v->owner = _current_player;
truelight@0: 			v->z_height = 6;
truelight@0: 			v->u.rail.track = 0x80;
truelight@0: 			v->vehstatus = VS_HIDDEN | VS_DEFPAL;
truelight@0: 
bjarni@1067: 			v->subtype = TS_Free_Car;
truelight@0: 			if (u != NULL) {
truelight@0: 				u->next = v;
bjarni@1067: 				v->subtype = TS_Not_First;
truelight@0: 				v->u.rail.first_engine = u->u.rail.first_engine;
bjarni@1067: 				if (v->u.rail.first_engine == 0xffff && u->subtype == TS_Front_Engine )
truelight@0: 					v->u.rail.first_engine = u->engine_type;
truelight@0: 			} else {
truelight@0: 				v->u.rail.first_engine = 0xffff;
truelight@0: 			}
truelight@0: 
truelight@0: 			v->cargo_type = rvi->cargo_type;
truelight@0: 			v->cargo_cap = rvi->capacity;
truelight@0: 			v->value = value;
truelight@0: //			v->day_counter = 0;
truelight@0: 
truelight@0: 			e = &_engines[engine];
truelight@0: 			v->u.rail.railtype = e->railtype;
truelight@193: 
truelight@0: 			v->build_year = _cur_year;
truelight@0: 			v->type = VEH_Train;
truelight@0: 			v->cur_image = 0xAC2;
truelight@193: 
truelight@0: 			_new_wagon_id = v->index;
truelight@0: 
truelight@0: 			VehiclePositionChanged(v);
truelight@0: 
truelight@0: 			InvalidateWindow(WC_VEHICLE_DEPOT, v->tile);
truelight@0: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	return value;
truelight@0: }
truelight@0: 
truelight@0: // Move all free vehicles in the depot to the train
truelight@0: static void NormalizeTrainVehInDepot(Vehicle *u)
truelight@0: {
truelight@0: 	Vehicle *v;
truelight@0: 	FOR_ALL_VEHICLES(v) {
bjarni@1067: 		if (v->type == VEH_Train && v->subtype == TS_Free_Car &&
truelight@0: 				v->tile == u->tile &&
truelight@0: 				v->u.rail.track == 0x80) {
truelight@0: 			if (DoCommandByTile(0,v->index | (u->index<<16), 1, DC_EXEC, CMD_MOVE_RAIL_VEHICLE) == CMD_ERROR)
truelight@0: 				break;
truelight@0: 		}
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: static const byte _railveh_unk1[] = {
truelight@0: 	0, 0, 0, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 1, 1, 0, 0, 0,
truelight@0: 	0, 0, 0, 0, 1, 0, 1, 0,
truelight@0: 	0, 1, 1, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0, 0, 0, 0, 1,
truelight@0: 	0, 0, 0, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0,
truelight@0: };
truelight@0: 
truelight@0: static const byte _railveh_score[] = {
truelight@0: 	1, 4, 7, 19, 20, 30, 31, 19,
truelight@0: 	20, 21, 22, 10, 11, 30, 31, 32,
truelight@0: 	33, 34, 35, 29, 45, 32, 50, 40,
truelight@0: 	41, 51, 52, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0, 0, 0, 60, 62,
truelight@0: 	63, 0, 0, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0, 70, 71, 72, 73,
truelight@0: 	74, 0, 0, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0, 0, 0, 0, 0,
truelight@0: 	0, 0, 0, 0,
truelight@0: };
truelight@0: 
truelight@0: 
truelight@812: int32 EstimateTrainCost(const RailVehicleInfo *rvi)
truelight@0: {
truelight@0: 	return (rvi->base_cost * (_price.build_railvehicle >> 3)) >> 5;
truelight@0: }
truelight@0: 
tron@1109: void AddRearEngineToMultiheadedTrain(Vehicle *v, Vehicle *u, bool building)
bjarni@1060: {
bjarni@1060: 	u->direction = v->direction;
bjarni@1060: 	u->owner = v->owner;
bjarni@1060: 	u->tile = v->tile;
bjarni@1060: 	u->x_pos = v->x_pos;
bjarni@1060: 	u->y_pos = v->y_pos;
bjarni@1060: 	u->z_pos = v->z_pos;
bjarni@1060: 	u->z_height = 6;
bjarni@1060: 	u->u.rail.track = 0x80;
bjarni@1060: 	v->u.rail.first_engine = 0xffff;
bjarni@1060: 	u->vehstatus = v->vehstatus & ~VS_STOPPED;
bjarni@1067: 	u->subtype = TS_Not_First;
bjarni@1060: 	u->spritenum = v->spritenum + 1;
bjarni@1060: 	u->cargo_type = v->cargo_type;
bjarni@1060: 	u->cargo_cap = v->cargo_cap;
bjarni@1060: 	u->u.rail.railtype = v->u.rail.railtype;
bjarni@1060: 	if (building) v->next = u;
bjarni@1060: 	u->engine_type = v->engine_type;
bjarni@1060: 	u->build_year = v->build_year;
tron@1109: 	if (building)
bjarni@1060: 		v->value = u->value = v->value >> 1;
bjarni@1060: 	else
bjarni@1060: 		u->value = v->value;
bjarni@1060: 	u->type = VEH_Train;
bjarni@1060: 	u->cur_image = 0xAC2;
bjarni@1060: 	VehiclePositionChanged(u);
bjarni@1060: }
bjarni@1060: 
truelight@0: /* Build a railroad vehicle
truelight@0:  * p1 = vehicle type id
truelight@0:  */
truelight@0: 
truelight@0: int32 CmdBuildRailVehicle(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
truelight@0: 	const RailVehicleInfo *rvi;
truelight@0: 	int value,dir;
truelight@0: 	Vehicle *v, *u;
truelight@1282: 	UnitID unit_num;
truelight@0: 	Engine *e;
matthijs@1330: 	TileIndex tile = TILE_FROM_XY(x,y);
truelight@0: 
tron@1197: 	if (!IsEngineBuildable(p1, VEH_Train)) return CMD_ERROR;
bjarni@1196: 
matthijs@1330: 	if (!IsTileDepotType(tile, TRANSPORT_RAIL)) return CMD_ERROR;
bjarni@1223: 
bjarni@1223: 	if (_map_owner[tile] != _current_player) return CMD_ERROR;
bjarni@1221: 
truelight@0: 	_cmd_build_rail_veh_var1 = 0;
truelight@193: 
truelight@0: 	SET_EXPENSES_TYPE(EXPENSES_NEW_VEHICLES);
truelight@0: 
tron@540: 	rvi = RailVehInfo(p1);
truelight@193: 
truelight@0: 	if (rvi->flags & RVI_WAGON) {
truelight@0: 		return CmdBuildRailWagon(p1, tile, flags);
truelight@0: 	}
truelight@0: 
truelight@0: 	value = EstimateTrainCost(rvi);
truelight@0: 
truelight@0: 	if (!(flags & DC_QUERY_COST)) {
truelight@0: 		v = AllocateVehicle();
truelight@1024: 		if (v == NULL || IsOrderPoolFull())
truelight@0: 			return_cmd_error(STR_00E1_TOO_MANY_VEHICLES_IN_GAME);
truelight@0: 
truelight@0: 		unit_num = GetFreeUnitNumber(VEH_Train);
truelight@0: 		if (unit_num > _patches.max_trains)
truelight@0: 			return_cmd_error(STR_00E1_TOO_MANY_VEHICLES_IN_GAME);
truelight@0: 
truelight@0: 		if (flags & DC_EXEC) {
truelight@0: 			v->unitnumber = unit_num;
truelight@0: 
truelight@0: 			dir = _map5[tile] & 3;
truelight@0: 
truelight@0: 			v->direction = (byte)(dir*2+1);
truelight@0: 			v->tile = (TileIndex)tile;
truelight@0: 			v->owner = _current_player;
truelight@0: 			v->x_pos = (x |= _vehicle_initial_x_fract[dir]);
truelight@0: 			v->y_pos = (y |= _vehicle_initial_y_fract[dir]);
truelight@0: 			v->z_pos = GetSlopeZ(x,y);
truelight@0: 			v->z_height = 6;
truelight@0: 			v->u.rail.track = 0x80;
truelight@0: 			v->u.rail.first_engine = 0xffff;
truelight@0: 			v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;
truelight@0: 			v->spritenum = rvi->image_index;
truelight@0: 			v->cargo_type = rvi->cargo_type;
truelight@0: 			v->cargo_cap = rvi->capacity;
truelight@0: 			v->max_speed = rvi->max_speed;
truelight@0: 			v->value = value;
truelight@1266: 			v->last_station_visited = INVALID_STATION;
truelight@0: 			v->dest_tile = 0;
truelight@193: 
truelight@0: 			v->engine_type = (byte)p1;
truelight@0: 			e = &_engines[p1];
truelight@0: 
truelight@0: 			v->reliability = e->reliability;
truelight@0: 			v->reliability_spd_dec = e->reliability_spd_dec;
truelight@0: 			v->max_age = e->lifelength * 366;
truelight@193: 
truelight@0: 			v->string_id = STR_SV_TRAIN_NAME;
truelight@0: 			v->u.rail.railtype = e->railtype;
truelight@0: 			_new_train_id = v->index;
truelight@193: 
truelight@0: 			v->service_interval = _patches.servint_trains;
truelight@0: 			v->date_of_last_service = _date;
truelight@0: 			v->build_year = _cur_year;
truelight@0: 			v->type = VEH_Train;
truelight@0: 			v->cur_image = 0xAC2;
truelight@0: 
truelight@0: 			VehiclePositionChanged(v);
truelight@0: 
bjarni@1060: 			if (rvi->flags&RVI_MULTIHEAD && (u = AllocateVehicle()) != NULL)
bjarni@1060: 				AddRearEngineToMultiheadedTrain(v, u, true);
truelight@0: 
truelight@0: 			UpdateTrainAcceleration(v);
truelight@0: 			NormalizeTrainVehInDepot(v);
truelight@0: 
truelight@0: 			InvalidateWindow(WC_VEHICLE_DEPOT, tile);
tron@588: 			RebuildVehicleLists();
truelight@0: 			InvalidateWindow(WC_COMPANY, v->owner);
truelight@0: 		}
truelight@0: 	}
truelight@0: 	_cmd_build_rail_veh_var1 = _railveh_unk1[p1];
truelight@0: 	_cmd_build_rail_veh_score = _railveh_score[p1];
bjarni@1128: 
bjarni@1128: 	InvalidateWindow(WC_REPLACE_VEHICLE, VEH_Train); // updates the replace Train window
bjarni@1128: 
truelight@193: 	return value;
truelight@0: }
truelight@0: 
tron@410: static bool IsTunnelTile(TileIndex tile)
truelight@0: {
tron@1035: 	return IsTileType(tile, MP_TUNNELBRIDGE) &&
truelight@0: 				 (_map5[tile]&0x80) == 0;
truelight@0: }
truelight@0: 
truelight@0: 
truelight@1313: int CheckTrainStoppedInDepot(Vehicle *v)
truelight@0: {
truelight@0: 	int count;
truelight@0: 	TileIndex tile = v->tile;
truelight@193: 
truelight@0: 	/* check if stopped in a depot */
matthijs@1330: 	if (!IsTileDepotType(tile, TRANSPORT_RAIL) || v->cur_speed != 0) {
truelight@0: errmsg:
truelight@0: 		_error_message = STR_881A_TRAINS_CAN_ONLY_BE_ALTERED;
truelight@0: 		return -1;
truelight@0: 	}
truelight@0: 
truelight@0: 	count = 0;
truelight@0: 	do {
truelight@0: 		count++;
truelight@193: 		if (v->u.rail.track != 0x80 || v->tile != (TileIndex)tile ||
bjarni@1067: 				(v->subtype == TS_Front_Engine && !(v->vehstatus&VS_STOPPED)))
truelight@0: 			goto errmsg;
truelight@0: 	} while ( (v=v->next) != NULL);
truelight@0: 
truelight@0: 	return count;
truelight@0: }
truelight@0: 
truelight@0: // unlink a rail wagon from the linked list.
truelight@0: // returns the new value of first
truelight@0: static Vehicle *UnlinkWagon(Vehicle *v, Vehicle *first)
truelight@0: {
truelight@0: 	// unlinking the first vehicle of the chain?
truelight@0: 	v->u.rail.first_engine = 0xffff;
truelight@0: 	if (v == first) {
truelight@0: 		Vehicle *u;
truelight@0: 		if ((v=v->next) == NULL) return NULL;
truelight@0: 		for (u=v; u; u=u->next) u->u.rail.first_engine = v->engine_type;
bjarni@1067: 		v->subtype = TS_Free_Car;
truelight@0: 		return v;
truelight@0: 	} else {
truelight@0: 		Vehicle *u;
truelight@0: 		for(u=first; u->next!=v; u=u->next) {}
truelight@0: 		u->next = v->next;
truelight@0: 		return first;
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: static Vehicle *FindGoodVehiclePos(Vehicle *src)
truelight@0: {
truelight@0: 	Vehicle *dst;
truelight@0: 	uint16 eng = src->engine_type;
truelight@0: 	TileIndex tile = src->tile;
truelight@0: 
truelight@0: 	FOR_ALL_VEHICLES(dst) {
bjarni@1067: 		if (dst->type == VEH_Train && dst->subtype == TS_Free_Car && dst->tile==tile) {
truelight@0: 			// check so all vehicles in the line have the same engine.
truelight@0: 			Vehicle *v = dst;
truelight@0: 			while (v->engine_type == eng) {
truelight@0: 				if ((v = v->next) == NULL) return dst;
truelight@0: 			}
truelight@0: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	return NULL;
truelight@0: }
truelight@0: 
truelight@0: /* p1 & 0xffff= source vehicle index
truelight@0:    p1 & 0xffff0000 = what wagon to put the wagon AFTER, 0xffff0000 to make a new line
truelight@0: 	 p2 & 1 = move all vehicles following the vehicle..
truelight@0:  */
truelight@0: 
truelight@0: int32 CmdMoveRailVehicle(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
truelight@0: 	Vehicle *src, *dst, *src_head, *dst_head;
truelight@0: 	bool is_loco;
truelight@0: 
bjarni@1237: 	if (!IsVehicleIndex(p1 & 0xFFFF)) return CMD_ERROR;
bjarni@1237: 
truelight@919: 	src = GetVehicle(p1 & 0xFFFF);
bjarni@1237: 
truelight@0: 	if (src->type != VEH_Train) return CMD_ERROR;
truelight@0: 
tron@540: 	is_loco = !(RailVehInfo(src->engine_type)->flags & RVI_WAGON)
truelight@0: 	          && is_firsthead_sprite(src->spritenum);
truelight@0: 
truelight@0: 	// if nothing is selected as destination, try and find a matching vehicle to drag to.
truelight@193: 	if (((int32)p1 >> 16) == -1) {
truelight@0: 		dst = NULL;
truelight@0: 		if (!is_loco) dst = FindGoodVehiclePos(src);
truelight@0: 	} else {
truelight@919: 		dst = GetVehicle(((int32)p1 >> 16));
truelight@0: 	}
truelight@0: 
truelight@0: 	// don't move the same vehicle..
truelight@0: 	if (src == dst)
truelight@0: 		return 0;
truelight@193: 
truelight@0: 	/* the player must be the owner */
truelight@0: 	if (!CheckOwnership(src->owner) || (dst!=NULL && !CheckOwnership(dst->owner)))
truelight@0: 		return CMD_ERROR;
truelight@0: 
truelight@0: 	/* locate the head of the two chains */
truelight@0: 	src_head = GetFirstVehicleInChain(src);
truelight@0: 	dst_head = NULL;
truelight@0: 	if (dst != NULL) dst_head = GetFirstVehicleInChain(dst);
truelight@193: 
truelight@0: 	/* check if all vehicles in the source train are stopped */
truelight@1313: 	if (CheckTrainStoppedInDepot(src_head) < 0)
truelight@0: 		return CMD_ERROR;
truelight@0: 
truelight@0: 	/* check if all the vehicles in the dest train are stopped,
truelight@0: 	 * and that the length of the dest train is no longer than XXX vehicles */
truelight@0: 	if (dst_head != NULL) {
truelight@1313: 		int num = CheckTrainStoppedInDepot(dst_head);
truelight@0: 		if (num < 0)
truelight@0: 			return CMD_ERROR;
truelight@0: 
bjarni@1067: 		if (num > (_patches.mammoth_trains ? 100 : 9) && dst_head->subtype == TS_Front_Engine )
truelight@0: 			return_cmd_error(STR_8819_TRAIN_TOO_LONG);
truelight@0: 
truelight@0: 		// if it's a multiheaded vehicle we're dragging to, drag to the vehicle before..
truelight@0: 		while (is_custom_secondhead_sprite(dst->spritenum)
truelight@0: 		       || (!is_custom_sprite(dst->spritenum) && _engine_sprite_add[dst->spritenum] != 0)) {
truelight@0: 			Vehicle *v = GetPrevVehicleInChain(dst);
truelight@0: 			if (!v || src == v) break;
truelight@0: 			dst = v;
truelight@0: 		}
truelight@0: 
truelight@0: 		assert(dst_head->tile == src_head->tile);
truelight@0: 	}
truelight@0: 
truelight@0: 	// when moving all wagons, we can't have the same src_head and dst_head
truelight@0: 	if (p2 & 1 && src_head == dst_head)
truelight@0: 		return 0;
truelight@0: 
truelight@0: 	// moving a loco to a new line?, then we need to assign a unitnumber.
bjarni@1067: 	if (dst == NULL && src->subtype != TS_Front_Engine && is_loco) {
truelight@1282: 		UnitID unit_num = GetFreeUnitNumber(VEH_Train);
truelight@0: 		if (unit_num > _patches.max_trains)
truelight@0: 			return_cmd_error(STR_00E1_TOO_MANY_VEHICLES_IN_GAME);
truelight@0: 
truelight@0: 		if (flags & DC_EXEC)
truelight@0: 			src->unitnumber = unit_num;
truelight@0: 	}
truelight@0: 
truelight@0: 
truelight@0: 	/* do it? */
truelight@0: 	if (flags & DC_EXEC) {
truelight@0: 		if (p2 & 1) {
truelight@0: 			// unlink ALL wagons
truelight@0: 			if (src != src_head) {
truelight@0: 				Vehicle *v = src_head;
truelight@0: 				while (v->next != src) v=v->next;
truelight@0: 				v->next = NULL;
truelight@0: 			}
truelight@0: 		} else {
truelight@0: 			// unlink single wagon from linked list
truelight@0: 			UnlinkWagon(src, src_head);
truelight@0: 			src->next = NULL;
truelight@0: 		}
truelight@0: 
truelight@0: 		if (dst == NULL) {
truelight@0: 			// move the train to an empty line. for locomotives, we set the type to 0. for wagons, 4.
truelight@0: 			if (is_loco) {
bjarni@1067: 				if (src->subtype != TS_Front_Engine) {
truelight@1024: 					// setting the type to 0 also involves setting up the orders field.
bjarni@1067: 					src->subtype = TS_Front_Engine;
truelight@1024: 					assert(src->orders == NULL);
truelight@0: 					src->num_orders = 0;
truelight@0: 				}
truelight@0: 				dst_head = src;
truelight@0: 			} else {
bjarni@1067: 				src->subtype = TS_Free_Car;
truelight@0: 			}
truelight@0: 			src->u.rail.first_engine = 0xffff;
truelight@0: 		} else {
bjarni@1067: 			if (src->subtype == TS_Front_Engine) {
truelight@1024: 				// the vehicle was previously a loco. need to free the order list and delete vehicle windows etc.
truelight@0: 				DeleteWindowById(WC_VEHICLE_VIEW, src->index);
truelight@1024: 				DeleteVehicleOrders(src);
truelight@0: 			}
truelight@193: 
bjarni@1067: 			src->subtype = TS_Not_First;
truelight@0: 			src->unitnumber = 0; // doesn't occupy a unitnumber anymore.
truelight@0: 
truelight@0: 			// setup first_engine
truelight@0: 			src->u.rail.first_engine = dst->u.rail.first_engine;
bjarni@1067: 			if (src->u.rail.first_engine == 0xffff && dst->subtype == TS_Front_Engine)
truelight@0: 				src->u.rail.first_engine = dst->engine_type;
truelight@0: 
truelight@0: 			// link in the wagon(s) in the chain.
truelight@0: 			{
truelight@0: 				Vehicle *v = src;
truelight@0: 				while (v->next != NULL) {
truelight@0: 					v->next->u.rail.first_engine = v->u.rail.first_engine;
truelight@0: 					v = v->next;
truelight@0: 				}
truelight@0: 				v->next = dst->next;
truelight@0: 			}
truelight@0: 			dst->next = src;
truelight@0: 		}
truelight@0: 
bjarni@1067: 		if (src_head->subtype == TS_Front_Engine)
truelight@0: 			UpdateTrainAcceleration(src_head);
truelight@0: 		InvalidateWindow(WC_VEHICLE_DETAILS, src_head->index);
truelight@0: 
truelight@0: 		if (dst_head) {
bjarni@1067: 			if (dst_head->subtype == TS_Front_Engine)
truelight@0: 				UpdateTrainAcceleration(dst_head);
truelight@0: 			InvalidateWindow(WC_VEHICLE_DETAILS, dst_head->index);
celestar@1387: 			/* Update the refit button */
celestar@1387: 			InvalidateWindowWidget(WC_VEHICLE_VIEW, dst_head->index, 12);
truelight@0: 		}
truelight@0: 
celestar@1387: 		/* I added this to so that the refit buttons get updated */
celestar@1387: 		InvalidateWindowWidget(WC_VEHICLE_VIEW, src_head->index, 12);
truelight@0: 		InvalidateWindow(WC_VEHICLE_DEPOT, src_head->tile);
tron@737: 		RebuildVehicleLists();
truelight@0: 	}
truelight@0: 
truelight@0: 	return 0;
truelight@0: }
truelight@0: 
truelight@0: /* p1 = train to start / stop */
truelight@0: int32 CmdStartStopTrain(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
truelight@0: 	Vehicle *v;
truelight@0: 
bjarni@1237: 	if (!IsVehicleIndex(p1)) return CMD_ERROR;
bjarni@1237: 
truelight@919: 	v = GetVehicle(p1);
truelight@0: 
bjarni@1237: 	if (v->type != VEH_Train || !CheckOwnership(v->owner))
truelight@0: 		return CMD_ERROR;
truelight@0: 
truelight@0: 	if (flags & DC_EXEC) {
truelight@0: 		v->u.rail.days_since_order_progr = 0;
truelight@0: 		v->vehstatus ^= VS_STOPPED;
darkvater@755: 		InvalidateWindowWidget(WC_VEHICLE_VIEW, v->index, STATUS_BAR);
truelight@0: 		InvalidateWindow(WC_VEHICLE_DEPOT, v->tile);
truelight@0: 	}
truelight@0: 	return 0;
truelight@0: }
truelight@0: 
truelight@0: // p1 = wagon/loco index
truelight@0: // p2 = mode
truelight@0: //   0: sell just the vehicle
truelight@0: //   1: sell the vehicle and all vehicles that follow it in the chain
truelight@0: //   2: when selling attached locos, rearrange all vehicles after it to separate lines.
truelight@0: int32 CmdSellRailWagon(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
truelight@0: 	Vehicle *v, *first,*last;
truelight@0: 	int32 cost;
truelight@0: 
bjarni@1237: 	if (!IsVehicleIndex(p1)) return CMD_ERROR;
truelight@0: 
truelight@919: 	v = GetVehicle(p1);
truelight@0: 
darkvater@1235: 	if (v->type != VEH_Train || !CheckOwnership(v->owner))
truelight@0: 		return CMD_ERROR;
truelight@0: 
bjarni@1237: 	SET_EXPENSES_TYPE(EXPENSES_NEW_VEHICLES);
bjarni@1237: 
truelight@0: 	// get first vehicle in chain
truelight@0: 	first = v;
bjarni@1067: 	if (first->subtype != TS_Front_Engine) {
truelight@0: 		first = GetFirstVehicleInChain(first);
signde@242: 		last = GetLastVehicleInChain(first);
signde@242: 		//now if:
signde@242: 		// 1) we delete a whole a chain, and
darkvater@244: 		// 2) we don't actually try to delete the last engine
darkvater@244: 		// 3) the first and the last vehicle of that train are of the same type, and
darkvater@244: 		// 4) the first and the last vehicle of the chain are not identical
darkvater@244: 		// 5) and of "engine" type (i.e. not a carriage)
signde@242: 		// then let the last vehicle live
bjarni@1067: 		if ( (p2 == 1) && (v != last) && ( last->engine_type == first->engine_type ) && (last != first) && (first->subtype == TS_Front_Engine) )
signde@242: 			last = GetPrevVehicleInChain(last);
signde@242: 		else
signde@242: 			last = NULL;
truelight@0: 	} else {
truelight@0: 		if (p2 != 1) {
truelight@0: 			// sell last part of multiheaded?
truelight@0: 			last = GetLastVehicleInChain(v);
truelight@73: 			// Check if the end-part is the same engine and check if it is the rear-end
truelight@73: 			if (last->engine_type != first->engine_type || is_firsthead_sprite(last->spritenum))
truelight@0: 				last = NULL;
truelight@0: 		} else {
truelight@0: 			last = NULL;
truelight@0: 		}
truelight@0: 	}
truelight@193: 
truelight@0: 	// make sure the vehicle is stopped in the depot
truelight@1313: 	if (CheckTrainStoppedInDepot(first) < 0)
truelight@0: 		return CMD_ERROR;
truelight@0: 
truelight@0: 
truelight@0: 	if (flags & DC_EXEC) {
truelight@0: 		// always redraw the depot. maybe redraw train list
truelight@0: 		InvalidateWindow(WC_VEHICLE_DEPOT, first->tile);
bjarni@1067: 		if (first->subtype == TS_Front_Engine) {
tron@588: 			RebuildVehicleLists();
darkvater@164: 		}
truelight@0: 		// when selling an attached locomotive. we need to delete its window.
bjarni@1067: 		if (v->subtype == TS_Front_Engine) {
truelight@0: 			DeleteWindowById(WC_VEHICLE_VIEW, v->index);
truelight@193: 
truelight@0: 			// rearrange all vehicles that follow to separate lines.
truelight@0: 			if (p2 == 2) {
truelight@0: 				Vehicle *u,*tmp;
truelight@0: 				u = v->next;
truelight@0: 				while (u != last) {
truelight@0: 					tmp = u;
truelight@0: 					u = u->next;
truelight@193: 					DoCommandByTile(tmp->tile, tmp->index | ((-1)<<16), 0, DC_EXEC, CMD_MOVE_RAIL_VEHICLE);
truelight@0: 				}
truelight@0: 			}
truelight@0: 		}
truelight@0: 
truelight@0: 		// delete the vehicles
truelight@0: 		cost = 0;
truelight@0: 		for(;;) {
truelight@0: 			Vehicle *tmp;
truelight@0: 
truelight@0: 			assert(first);
truelight@0: 			first = UnlinkWagon(v, first);
truelight@0: 			cost -= v->value;
truelight@0: 			tmp = v;
truelight@0: 			DeleteVehicle(tmp);
darkvater@244: 			if ( v == last ) {
darkvater@244: 				last = NULL;
darkvater@244: 				break;
darkvater@244: 			}
darkvater@244: 			if ( (v=v->next) == last || p2 != 1) break;
truelight@0: 		}
truelight@0: 
truelight@0: 		// delete last vehicle of multiheaded train?
truelight@0: 		if (last) {
truelight@0: 			first = UnlinkWagon(last, first);
truelight@0: 			cost -= last->value;
truelight@0: 			DeleteVehicle(last);
truelight@0: 		}
truelight@193: 
truelight@0: 		// an attached train changed?
bjarni@1067: 		if (first && first->subtype == TS_Front_Engine) {
truelight@0: 			UpdateTrainAcceleration(first);
truelight@0: 			InvalidateWindow(WC_VEHICLE_DETAILS, first->index);
truelight@0: 		}
truelight@0: 	} else {
truelight@0: 		cost = 0;
truelight@0: 		for(;;) {
truelight@0: 			cost -= v->value;
darkvater@244: 			if ( v == last ) {
darkvater@244: 				last = NULL;
darkvater@244: 				break;
darkvater@244: 			}
darkvater@244: 			if ( (v=v->next) == last || p2 != 1) break;
truelight@0: 		}
truelight@0: 		if (last) cost -= last->value;
truelight@0: 	}
bjarni@1128: 	InvalidateWindow(WC_REPLACE_VEHICLE, VEH_Train); // updates the replace Train window
truelight@0: 
truelight@0: 	return cost;
truelight@0: }
truelight@0: 
truelight@0: static void UpdateTrainDeltaXY(Vehicle *v, int direction)
truelight@0: {
truelight@0: #define MKIT(a,b,c,d) ((a&0xFF)<<24) | ((b&0xFF)<<16) | ((c&0xFF)<<8) | ((d&0xFF)<<0)
truelight@0: 	static const uint32 _delta_xy_table[8] = {
truelight@0: 		MKIT(3, 3, -1, -1),
truelight@0: 		MKIT(3, 7, -1, -3),
truelight@0: 		MKIT(3, 3, -1, -1),
truelight@0: 		MKIT(7, 3, -3, -1),
truelight@0: 		MKIT(3, 3, -1, -1),
truelight@0: 		MKIT(3, 7, -1, -3),
truelight@0: 		MKIT(3, 3, -1, -1),
truelight@0: 		MKIT(7, 3, -3, -1),
truelight@0: 	};
truelight@0: #undef MKIT
truelight@0: 
truelight@0: 	uint32 x = _delta_xy_table[direction];
truelight@0: 
truelight@0: 	v->x_offs = (byte)x;
truelight@0: 	v->y_offs = (byte)(x>>=8);
truelight@0: 	v->sprite_width = (byte)(x>>=8);
truelight@0: 	v->sprite_height = (byte)(x>>=8);
truelight@0: }
truelight@0: 
truelight@0: static void UpdateVarsAfterSwap(Vehicle *v)
truelight@0: {
truelight@0: 	UpdateTrainDeltaXY(v, v->direction);
truelight@0: 	v->cur_image = GetTrainImage(v, v->direction);
truelight@0: 	BeginVehicleMove(v);
truelight@0: 	VehiclePositionChanged(v);
truelight@0: 	EndVehicleMove(v);
truelight@0: }
truelight@0: 
truelight@193: static void SetLastSpeed(Vehicle *v, int spd) {
truelight@0: 	int old = v->u.rail.last_speed;
truelight@0: 	if (spd != old) {
truelight@0: 		v->u.rail.last_speed = spd;
truelight@0: 		if (_patches.vehicle_speed || !old != !spd)
darkvater@755: 			InvalidateWindowWidget(WC_VEHICLE_VIEW, v->index, STATUS_BAR);
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@954: static void SwapTrainFlags(byte *swap_flag1, byte *swap_flag2)
truelight@954: {
truelight@954: 	byte flag1, flag2;
truelight@954: 
truelight@954: 	flag1 = *swap_flag1;
truelight@954: 	flag2 = *swap_flag2;
truelight@954: 
truelight@954: 	/* Clear the flags */
truelight@954: 	CLRBIT(*swap_flag1, VRF_GOINGUP);
truelight@954: 	CLRBIT(*swap_flag1, VRF_GOINGDOWN);
truelight@954: 	CLRBIT(*swap_flag2, VRF_GOINGUP);
truelight@954: 	CLRBIT(*swap_flag2, VRF_GOINGDOWN);
truelight@954: 
truelight@954: 	/* Reverse the rail-flags (if needed) */
truelight@954: 	if (HASBIT(flag1, VRF_GOINGUP)) {
truelight@954: 		SETBIT(*swap_flag2, VRF_GOINGDOWN);
truelight@954: 	} else if (HASBIT(flag1, VRF_GOINGDOWN)) {
truelight@954: 		SETBIT(*swap_flag2, VRF_GOINGUP);
truelight@954: 	}
truelight@954: 	if (HASBIT(flag2, VRF_GOINGUP)) {
truelight@954: 		SETBIT(*swap_flag1, VRF_GOINGDOWN);
truelight@954: 	} else if (HASBIT(flag2, VRF_GOINGDOWN)) {
truelight@954: 		SETBIT(*swap_flag1, VRF_GOINGUP);
truelight@954: 	}
truelight@954: }
truelight@954: 
truelight@0: static void ReverseTrainSwapVeh(Vehicle *v, int l, int r)
truelight@0: {
truelight@0: 	Vehicle *a, *b;
truelight@0: 
truelight@0: 	/* locate vehicles to swap */
truelight@0: 	for(a=v; l!=0; l--) { a = a->next; }
truelight@0: 	for(b=v; r!=0; r--) { b = b->next; }
truelight@0: 
truelight@0: 	if (a != b) {
truelight@0: 		/* swap the hidden bits */
truelight@0: 		{
truelight@0: 			uint16 tmp = (a->vehstatus & ~VS_HIDDEN) | (b->vehstatus&VS_HIDDEN);
truelight@0: 			b->vehstatus = (b->vehstatus & ~VS_HIDDEN) | (a->vehstatus&VS_HIDDEN);
truelight@0: 			a->vehstatus = tmp;
truelight@0: 		}
truelight@193: 
truelight@0: 		/* swap variables */
truelight@0: 		swap_byte(&a->u.rail.track, &b->u.rail.track);
truelight@0: 		swap_byte(&a->direction, &b->direction);
truelight@0: 
truelight@0: 		/* toggle direction */
truelight@0: 		if (!(a->u.rail.track & 0x80)) a->direction ^= 4;
truelight@0: 		if (!(b->u.rail.track & 0x80)) b->direction ^= 4;
truelight@193: 
truelight@0: 		/* swap more variables */
tron@1174: 		swap_int32(&a->x_pos, &b->x_pos);
tron@1174: 		swap_int32(&a->y_pos, &b->y_pos);
truelight@0: 		swap_tile(&a->tile, &b->tile);
truelight@0: 		swap_byte(&a->z_pos, &b->z_pos);
truelight@0: 
truelight@954: 		SwapTrainFlags(&a->u.rail.flags, &b->u.rail.flags);
truelight@954: 
truelight@0: 		/* update other vars */
truelight@0: 		UpdateVarsAfterSwap(a);
truelight@0: 		UpdateVarsAfterSwap(b);
truelight@0: 	} else {
truelight@0: 		if (!(a->u.rail.track & 0x80)) a->direction ^= 4;
truelight@193: 		UpdateVarsAfterSwap(a);
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@744: /* Check if the vehicle is a train and is on the tile we are testing */
truelight@744: static void *TestTrainOnCrossing(Vehicle *v, void *data)
truelight@744: {
truelight@744: 	if (v->tile != *(const TileIndex*)data || v->type != VEH_Train)
truelight@744: 		return NULL;
truelight@744: 
truelight@744: 	return v;
truelight@744: }
truelight@744: 
dominik@1103: static void DisableTrainCrossing(TileIndex tile)
dominik@1103: {
dominik@1103: 	/* Test if we have a rail/road-crossing */
dominik@1103: 	if (IsTileType(tile, MP_STREET) && (_map5[tile] & 0xF0) == 0x10) {
dominik@1103: 		/* Check if there is a train on the tile itself */
dominik@1103: 		if (VehicleFromPos(tile, &tile, TestTrainOnCrossing) == NULL) {
dominik@1103: 			/* If light is on, switch light off */
dominik@1103: 			if (_map5[tile] & 4) {
dominik@1103: 				_map5[tile] &= ~4;
dominik@1103: 				MarkTileDirtyByTile(tile);
dominik@1103: 			}
dominik@1103: 		}
dominik@1103: 	}
dominik@1103: }
dominik@1103: 
truelight@0: static void ReverseTrainDirection(Vehicle *v)
truelight@0: {
truelight@0: 	int l = 0, r = -1;
truelight@0: 	Vehicle *u;
truelight@0: 
matthijs@1330: 	if (IsTileDepotType(v->tile, TRANSPORT_RAIL))
truelight@0: 		InvalidateWindow(WC_VEHICLE_DEPOT, v->tile);
truelight@0: 
truelight@743: 	/* Check if we were approaching a rail/road-crossing */
truelight@743: 	{
truelight@743: 		TileIndex tile = v->tile;
truelight@743: 		int t;
truelight@743: 		/* Determine the non-diagonal direction in which we will exit this tile */
truelight@743: 		t = v->direction >> 1;
truelight@743: 		if (!(v->direction & 1) && v->u.rail.track != _state_dir_table[t]) {
truelight@743: 			t = (t - 1) & 3;
truelight@743: 		}
truelight@743: 		/* Calculate next tile */
tron@900: 		tile += TileOffsByDir(t);
dominik@1103: 
dominik@1103: 		/* Check if the train left a rail/road-crossing */
dominik@1103: 		DisableTrainCrossing(tile);
truelight@743: 	}
truelight@743: 
truelight@0: 	// count number of vehicles
truelight@0: 	u = v;
truelight@0: 	do r++; while ( (u = u->next) != NULL );
truelight@0: 
truelight@0: 	/* swap start<>end, start+1<>end-1, ... */
truelight@0: 	do {
truelight@0: 		ReverseTrainSwapVeh(v, l++, r--);
truelight@0: 	} while (l <= r);
truelight@0: 
matthijs@1330: 	if (IsTileDepotType(v->tile, TRANSPORT_RAIL))
truelight@0: 		InvalidateWindow(WC_VEHICLE_DEPOT, v->tile);
truelight@0: 
truelight@954: 	CLRBIT(v->u.rail.flags, VRF_REVERSING);
truelight@0: }
truelight@0: 
truelight@0: /* p1 = vehicle */
truelight@0: int32 CmdReverseTrainDirection(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
truelight@0: 	Vehicle *v;
truelight@0: 
bjarni@1237: 	if (!IsVehicleIndex(p1)) return CMD_ERROR;
bjarni@1237: 
truelight@919: 	v = GetVehicle(p1);
truelight@0: 
bjarni@1237: 	if (v->type != VEH_Train || !CheckOwnership(v->owner))
truelight@0: 		return CMD_ERROR;
truelight@0: 
truelight@0: 	_error_message = STR_EMPTY;
truelight@0: 
matthijs@1330: //	if (v->u.rail.track & 0x80 || IsTileDepotType(v->tile, TRANSPORT_RAIL))
truelight@0: //		return CMD_ERROR;
truelight@0: 
truelight@0: 	if (v->u.rail.crash_anim_pos != 0 || v->breakdown_ctr != 0)
truelight@0: 		return CMD_ERROR;
truelight@0: 
truelight@0: 	if (flags & DC_EXEC) {
truelight@0: 		if (_patches.realistic_acceleration && v->cur_speed != 0) {
truelight@954: 			TOGGLEBIT(v->u.rail.flags, VRF_REVERSING);
truelight@0: 		} else {
truelight@0: 			v->cur_speed = 0;
truelight@0: 			SetLastSpeed(v, 0);
truelight@0: 			ReverseTrainDirection(v);
truelight@0: 		}
truelight@0: 	}
truelight@0: 	return 0;
truelight@0: }
truelight@0: 
truelight@0: int32 CmdForceTrainProceed(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
truelight@0: 	Vehicle *v;
truelight@0: 
bjarni@1237: 	if (!IsVehicleIndex(p1)) return CMD_ERROR;
bjarni@1237: 
truelight@919: 	v = GetVehicle(p1);
truelight@0: 
bjarni@1237: 	if (v->type != VEH_Train || !CheckOwnership(v->owner))
truelight@0: 		return CMD_ERROR;
truelight@0: 
truelight@0: 	if (flags & DC_EXEC)
truelight@0: 		v->u.rail.force_proceed = 0x50;
truelight@193: 
truelight@0: 	return 0;
truelight@0: }
truelight@0: 
truelight@0: // p1 = vehicle to refit
bjarni@842: // p2 = new cargo (0xFF)
bjarni@842: // p2 = skip check for stopped in hanger (0x0100)
truelight@0: int32 CmdRefitRailVehicle(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
truelight@0: 	Vehicle *v;
truelight@0: 	int32 cost;
truelight@0: 	uint num;
truelight@0: 
bjarni@842: 	byte SkipStoppedInDepotCheck = (p2 & 0x100) >> 8;
bjarni@842: 
bjarni@842: 	p2 = p2 & 0xFF;
bjarni@842: 
bjarni@1237: 	if (!IsVehicleIndex(p1)) return CMD_ERROR;
tron@915: 
truelight@919: 	v = GetVehicle(p1);
bjarni@1237: 
truelight@1313: 	if (v->type != VEH_Train || !CheckOwnership(v->owner) || ((CheckTrainStoppedInDepot(v) < 0) && !(SkipStoppedInDepotCheck)))
truelight@0: 		return CMD_ERROR;
truelight@0: 
bjarni@1237: 	SET_EXPENSES_TYPE(EXPENSES_TRAIN_RUN);
bjarni@1237: 
truelight@0: 	cost = 0;
truelight@0: 	num = 0;
tron@915: 
truelight@0: 	do {
pasky@491: 		/* XXX: We also refit all the attached wagons en-masse if they
pasky@491: 		 * can be refitted. This is how TTDPatch does it.  TODO: Have
pasky@491: 		 * some nice [Refit] button near each wagon. --pasky */
tron@540: 		if ((!(RailVehInfo(v->engine_type)->flags & RVI_WAGON)
pasky@491: 		     || (_engine_refit_masks[v->engine_type] & (1 << p2)))
pasky@491: 		    && (byte) p2 != v->cargo_type && v->cargo_cap != 0) {
dominik@15: 			cost += (_price.build_railvehicle >> 8);
truelight@0: 			num += v->cargo_cap;
truelight@0: 			if (flags & DC_EXEC) {
bjarni@842: 		//autorefitted train cars wants to keep the cargo
bjarni@842: 		//it will be checked if the cargo is valid in CmdReplaceVehicle
bjarni@842: 				if (!(SkipStoppedInDepotCheck))
bjarni@842: 					v->cargo_count = 0;
truelight@0: 				v->cargo_type = (byte)p2;
truelight@0: 				InvalidateWindow(WC_VEHICLE_DETAILS, v->index);
truelight@0: 			}
truelight@193: 		}
bjarni@842: 	// SkipStoppedInDepotCheck is called by CmdReplace and it should only apply to the single car it is called for
bjarni@842: 	} while ( (v=v->next) != NULL || SkipStoppedInDepotCheck );
truelight@0: 
truelight@0: 	_returned_refit_amount = num;
truelight@0: 
truelight@0: 	return cost;
truelight@0: }
truelight@0: 
truelight@0: typedef struct TrainFindDepotData {
truelight@0: 	uint best_length;
truelight@0: 	uint tile;
truelight@0: 	byte owner;
truelight@0: } TrainFindDepotData;
truelight@0: 
truelight@0: static bool TrainFindDepotEnumProc(uint tile, TrainFindDepotData *tfdd, int track, uint length, byte *state)
truelight@0: {
tron@1035: 	if (IsTileType(tile, MP_RAILWAY) && _map_owner[tile] == tfdd->owner) {
truelight@0: 		if ((_map5[tile] & ~0x3) == 0xC0) {
truelight@0: 			if (length < tfdd->best_length) {
truelight@0: 				tfdd->best_length = length;
truelight@0: 				tfdd->tile = tile;
truelight@0: 			}
truelight@0: 			return true;
truelight@0: 		}
truelight@0: 
truelight@0: 		// make sure the train doesn't run against a oneway signal
truelight@0: 		if ((_map5[tile] & 0xC0) == 0x40) {
matthijs@1247: 			if (!(_map3_lo[tile] & _signal_along_trackdir[track]) && _map3_lo[tile] & _signal_against_trackdir[track])
truelight@0: 				return true;
truelight@0: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	// stop  searching if we've found a destination that is closer already.
truelight@0: 	return length >= tfdd->best_length;
truelight@0: }
truelight@0: 
darkvater@308: // returns the tile of a depot to goto to.
darkvater@308: static TrainFindDepotData FindClosestTrainDepot(Vehicle *v)
truelight@0: {
truelight@0: 	int i;
truelight@0: 	TrainFindDepotData tfdd;
truelight@0: 	uint tile = v->tile;
truelight@0: 
darkvater@308: 	tfdd.owner = v->owner;
darkvater@308: 	tfdd.best_length = (uint)-1;
darkvater@308: 
matthijs@1330: 	if (IsTileDepotType(tile, TRANSPORT_RAIL)){
darkvater@308: 		tfdd.tile = tile;
darkvater@308: 		tfdd.best_length = 0;
darkvater@308: 		return tfdd;
darkvater@308: 	}
truelight@0: 
truelight@0: 	if (v->u.rail.track == 0x40) { tile = GetVehicleOutOfTunnelTile(v); }
truelight@193: 
matthijs@1247: 	if (_patches.new_pathfinding_all) {
matthijs@1247: 		NPFFoundTargetData ftd;
matthijs@1247: 		byte trackdir = _track_direction_to_trackdir[FIND_FIRST_BIT(v->u.rail.track)][v->direction];
matthijs@1330: 		ftd = NPFRouteToDepotBreadthFirst(v->tile, trackdir, TRANSPORT_RAIL, v->owner);
matthijs@1247: 		if (ftd.best_bird_dist == 0) {
matthijs@1247: 			/* Found target */
matthijs@1247: 			tfdd.tile = ftd.node.tile;
matthijs@1247: 			tfdd.best_length = ftd.best_path_dist;
matthijs@1247: 		}
matthijs@1247: 	} else if (!_patches.new_depot_finding) {
truelight@0: 		// search in all directions
truelight@0: 		for(i=0; i!=4; i++)
truelight@0: 			NewTrainPathfind(tile, i, (TPFEnumProc*)TrainFindDepotEnumProc, &tfdd, NULL);
truelight@0: 	} else {
truelight@0: 		// search in the forward direction first.
truelight@0: 		i = v->direction >> 1;
truelight@0: 		if (!(v->direction & 1) && v->u.rail.track != _state_dir_table[i]) { i = (i - 1) & 3; }
truelight@0: 		NewTrainPathfind(tile, i, (TPFEnumProc*)TrainFindDepotEnumProc, &tfdd, NULL);
darkvater@308: 		if (tfdd.best_length == (uint)-1){
darkvater@308: 			// search in backwards direction
darkvater@308: 			i = (v->direction^4) >> 1;
darkvater@308: 			if (!(v->direction & 1) && v->u.rail.track != _state_dir_table[i]) { i = (i - 1) & 3; }
darkvater@308: 			NewTrainPathfind(tile, i, (TPFEnumProc*)TrainFindDepotEnumProc, &tfdd, NULL);
darkvater@308: 		}
truelight@0: 	}
truelight@193: 
darkvater@308: 	return tfdd;
truelight@0: }
truelight@0: 
bjarni@1208: /*  Send a train to the nearest depot
bjarni@1208: 	p1 = index of the train
bjarni@1208: 	p2 = bit 0 = do not stop in depot
bjarni@1208: 		 bit 1 = set v->set_for_replacement
bjarni@1208: 		 bit 2 = clear v->set_for_replacement */
truelight@0: int32 CmdTrainGotoDepot(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
bjarni@1237: 	Vehicle *v;
darkvater@308: 	TrainFindDepotData tfdd;
truelight@0: 
bjarni@1237: 	if (!IsVehicleIndex(p1)) return CMD_ERROR;
bjarni@1237: 
bjarni@1237: 	v = GetVehicle(p1);
bjarni@1237: 
bjarni@1237: 	if (v->type != VEH_Train || !CheckOwnership(v->owner))
bjarni@1208: 		return CMD_ERROR;
bjarni@1208: 
bjarni@1208: 	if (HASBIT(p2, 0)) v->set_for_replacement = true;
bjarni@1208: 	if (HASBIT(p2, 2)) v->set_for_replacement = false;
bjarni@1208: 
bjarni@1208: 	if (HASBIT(p2, 1) || HASBIT(p2, 2)) return CMD_ERROR;   // vehicle has a depot in schedule. It just needed to alter set_for_replacement
bjarni@1208: 
bjarni@1208: 
tron@555: 	if (v->current_order.type == OT_GOTO_DEPOT) {
truelight@0: 		if (flags & DC_EXEC) {
tron@555: 			if (v->current_order.flags & OF_UNLOAD) {
truelight@0: 				v->u.rail.days_since_order_progr = 0;
truelight@0: 				v->cur_order_index++;
truelight@0: 			}
truelight@193: 
tron@555: 			v->current_order.type = OT_DUMMY;
tron@555: 			v->current_order.flags = 0;
darkvater@755: 			InvalidateWindowWidget(WC_VEHICLE_VIEW, v->index, STATUS_BAR);
truelight@0: 		}
truelight@0: 		return 0;
truelight@0: 	}
truelight@0: 
darkvater@308: 	tfdd = FindClosestTrainDepot(v);
darkvater@308: 	if (tfdd.best_length == (uint)-1)
truelight@0: 		return_cmd_error(STR_883A_UNABLE_TO_FIND_ROUTE_TO);
truelight@0: 
truelight@0: 	if (flags & DC_EXEC) {
darkvater@308: 		v->dest_tile = tfdd.tile;
tron@555: 		v->current_order.type = OT_GOTO_DEPOT;
bjarni@1208: 		v->current_order.flags = HASBIT(p2, 0) ? 0 : OF_NON_STOP | OF_FULL_LOAD;
truelight@1313: 		v->current_order.station = GetDepotByTile(tfdd.tile)->index;
darkvater@755: 		InvalidateWindowWidget(WC_VEHICLE_VIEW, v->index, STATUS_BAR);
truelight@0: 	}
truelight@193: 
truelight@0: 	return 0;
truelight@0: }
truelight@0: 
truelight@0: /* p1 = vehicle
truelight@0:  * p2 = new service int
truelight@0:  */
truelight@0: int32 CmdChangeTrainServiceInt(int x, int y, uint32 flags, uint32 p1, uint32 p2)
truelight@0: {
bjarni@1237: 	Vehicle *v;
bjarni@1237: 
bjarni@1237: 	if (!IsVehicleIndex(p1)) return CMD_ERROR;
bjarni@1237: 
bjarni@1237: 	v = GetVehicle(p1);
bjarni@1237: 
bjarni@1237: 	if (v->type != VEH_Train || !CheckOwnership(v->owner))
truelight@0: 		return CMD_ERROR;
truelight@0: 
truelight@0: 	if (flags & DC_EXEC) {
truelight@0: 		v->service_interval = (uint16)p2;
truelight@0: 		InvalidateWindowWidget(WC_VEHICLE_DETAILS, v->index, 8);
truelight@0: 	}
truelight@193: 
truelight@0: 	return 0;
truelight@0: }
truelight@0: 
tron@1093: void OnTick_Train(void)
truelight@0: {
truelight@0: 	_age_cargo_skip_counter = (_age_cargo_skip_counter == 0) ? 184 : (_age_cargo_skip_counter - 1);
truelight@0: }
truelight@0: 
truelight@0: static const int8 _vehicle_smoke_pos[16] = {
truelight@0: 	-4, -4, -4, 0, 4, 4, 4, 0,
truelight@0: 	-4,  0,  4, 4, 4, 0,-4,-4,
truelight@0: };
truelight@0: 
truelight@0: static void HandleLocomotiveSmokeCloud(Vehicle *v)
truelight@0: {
truelight@0: 	Vehicle *u;
truelight@0: 
truelight@0: 	if (v->vehstatus & VS_TRAIN_SLOWING || v->load_unload_time_rem != 0 || v->cur_speed < 2)
truelight@0: 		return;
truelight@0: 
truelight@0: 	u = v;
truelight@0: 
truelight@0: 	do {
truelight@0: 		int engtype = v->engine_type;
truelight@0: 
truelight@0: 		// no smoke?
tron@540: 		if (RailVehInfo(engtype)->flags & 2
truelight@0: 		    || _engines[engtype].railtype > 0
truelight@0: 		    || (v->vehstatus&VS_HIDDEN) || (v->u.rail.track & 0xC0) )
truelight@0: 			continue;
truelight@0: 
tron@540: 		switch (RailVehInfo(engtype)->engclass) {
truelight@0: 		case 0:
truelight@0: 			// steam smoke.
matthijs@1330: 			if ( (v->tick_counter&0xF) == 0 && !IsTileDepotType(v->tile, TRANSPORT_RAIL) && !IsTunnelTile(v->tile)) {
truelight@193: 				CreateEffectVehicleRel(v,
truelight@0: 					(_vehicle_smoke_pos[v->direction]),
truelight@0: 					(_vehicle_smoke_pos[v->direction+8]),
truelight@0: 					10,
truelight@0: 					EV_STEAM_SMOKE);
truelight@0: 			}
truelight@0: 			break;
truelight@0: 
truelight@0: 		case 1:
truelight@0: 			// diesel smoke
matthijs@1330: 			if (u->cur_speed <= 40 && !IsTileDepotType(v->tile, TRANSPORT_RAIL) && !IsTunnelTile(v->tile) && (uint16)Random() <= 0x1E00) {
tron@1359: 				CreateEffectVehicleRel(v, 0, 0, 10, EV_DIESEL_SMOKE);
truelight@0: 			}
truelight@0: 			break;
truelight@0: 
truelight@0: 		case 2:
truelight@0: 			// blue spark
matthijs@1330: 			if ( (v->tick_counter&0x3) == 0 && !IsTileDepotType(v->tile, TRANSPORT_RAIL) && !IsTunnelTile(v->tile) && (uint16)Random() <= 0x5B0) {
tron@1359: 				CreateEffectVehicleRel(v, 0, 0, 10, EV_ELECTRIC_SPARK);
truelight@0: 			}
truelight@0: 			break;
truelight@0: 		}
truelight@0: 	} while ( (v = v->next) != NULL );
truelight@0: 
truelight@0: }
truelight@0: 
truelight@0: static void TrainPlayLeaveStationSound(Vehicle *v)
truelight@0: {
tron@541: 	static const SoundFx sfx[] = {
tron@541: 		SND_04_TRAIN,
tron@541: 		SND_0A_TRAIN_HORN,
tron@541: 		SND_0A_TRAIN_HORN
tron@541: 	};
tron@541: 
truelight@0: 	int engtype = v->engine_type;
truelight@0: 
truelight@0: 	switch (_engines[engtype].railtype) {
tron@337: 		case 0:
tron@540: 			SndPlayVehicleFx(sfx[RailVehInfo(engtype)->engclass], v);
tron@337: 			break;
tron@337: 		case 1:
tron@337: 			SndPlayVehicleFx(SND_47_MAGLEV_2, v);
tron@337: 			break;
tron@337: 		case 2:
tron@337: 			SndPlayVehicleFx(SND_41_MAGLEV, v);
tron@337: 			break;
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: static bool CheckTrainStayInDepot(Vehicle *v)
truelight@0: {
truelight@0: 	Vehicle *u;
tron@495: 
tron@495: 	// bail out if not all wagons are in the same depot or not in a depot at all
truelight@742: 	for (u = v; u != NULL; u = u->next)
tron@495: 		if (u->u.rail.track != 0x80 || u->tile != v->tile)
tron@495: 			return false;
truelight@0: 
truelight@0: 	if (v->u.rail.force_proceed == 0) {
bjarni@1151: 		if (++v->load_unload_time_rem < 37) {
bjarni@1151: 			InvalidateWindowClasses(WC_TRAINS_LIST);
truelight@0: 			return true;
bjarni@1151: 		}
bjarni@1151: 
truelight@0: 		v->load_unload_time_rem = 0;
truelight@0: 
bjarni@1151: 		if (UpdateSignalsOnSegment(v->tile, v->direction)) {
bjarni@1151: 			InvalidateWindowClasses(WC_TRAINS_LIST);
truelight@0: 			return true;
bjarni@1151: 		}
truelight@0: 	}
truelight@0: 
bjarni@578: 	VehicleServiceInDepot(v);
bjarni@1151: 	InvalidateWindowClasses(WC_TRAINS_LIST);
truelight@0: 	TrainPlayLeaveStationSound(v);
truelight@193: 
truelight@0: 	v->u.rail.track = 1;
truelight@0: 	if (v->direction & 2)
truelight@0: 		v->u.rail.track = 2;
truelight@193: 
truelight@0: 	v->vehstatus &= ~VS_HIDDEN;
truelight@0: 	v->cur_speed = 0;
truelight@193: 
truelight@0: 	UpdateTrainDeltaXY(v, v->direction);
truelight@0: 	v->cur_image = GetTrainImage(v, v->direction);
truelight@0: 	VehiclePositionChanged(v);
truelight@0: 	UpdateSignalsOnSegment(v->tile, v->direction);
truelight@0: 	UpdateTrainAcceleration(v);
truelight@0: 	InvalidateWindow(WC_VEHICLE_DEPOT, v->tile);
truelight@0: 
truelight@0: 	return false;
truelight@0: }
truelight@0: 
matthijs@1247: /* Check for station tiles */
truelight@0: typedef struct TrainTrackFollowerData {
truelight@0: 	TileIndex dest_coords;
truelight@0: 	int station_index; // station index we're heading for
truelight@0: 	uint best_bird_dist;
truelight@0: 	uint best_track_dist;
truelight@0: 	byte best_track;
truelight@0: } TrainTrackFollowerData;
truelight@0: 
truelight@0: static bool TrainTrackFollower(uint tile, TrainTrackFollowerData *ttfd, int track, uint length, byte *state){
tron@1035: 	if (IsTileType(tile, MP_RAILWAY) && (_map5[tile]&0xC0) == 0x40) {
truelight@0: 		// the tile has a signal
truelight@0: 		byte m3 = _map3_lo[tile];
matthijs@1247: 		if (!(m3 & _signal_along_trackdir[track])) {
truelight@0: 			// if one way signal not pointing towards us, stop going in this direction.
matthijs@1247: 			if (m3 & _signal_against_trackdir[track])
truelight@0: 				return true;
matthijs@1247: 		} else if (_map2[tile] & _signal_along_trackdir[track]) {
truelight@0: 			// green signal in our direction. either one way or two way.
truelight@0: 			*state = true;
matthijs@1247: 		} else if (m3 & _signal_against_trackdir[track]) {
truelight@0: 			// two way signal. unless we passed another green signal on the way,
truelight@0: 			// stop going in this direction.
truelight@0: 			if (!*state) return true;
truelight@0: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	// heading for nowhere?
truelight@0: 	if (ttfd->dest_coords == 0)
truelight@0: 		return false;
truelight@0: 
truelight@0: 	// did we reach the final station?
truelight@166:  if ((ttfd->station_index == -1 && tile == ttfd->dest_coords) ||
tron@1035:   (IsTileType(tile, MP_STATION) && IS_BYTE_INSIDE(_map5[tile], 0, 8) && _map2[tile] == ttfd->station_index)) {
truelight@166:   /* We do not check for dest_coords if we have a station_index,
truelight@166:    * because in that case the dest_coords are just an
truelight@166:    * approximation of where the station is */
truelight@0: 		// found station
truelight@0: 		ttfd->best_bird_dist = 0;
truelight@0: 		if (length < ttfd->best_track_dist) {
truelight@0: 			ttfd->best_track_dist = length;
truelight@0: 			ttfd->best_track = state[1];
truelight@0: 		}
truelight@0: 		return true;
truelight@0: 	} else {
truelight@0: 		uint dist;
truelight@0: 
truelight@0: 		// we've actually found the destination already. no point searching in directions longer than this.
truelight@0: 		if (ttfd->best_track_dist != (uint)-1)
truelight@0: 			return length >= ttfd->best_track_dist;
truelight@193: 
truelight@0: 		// didn't find station
tron@1245: 		dist = DistanceManhattan(tile, ttfd->dest_coords);
truelight@0: 		if (dist < ttfd->best_bird_dist) {
truelight@0: 			ttfd->best_bird_dist = dist;
truelight@0: 			ttfd->best_track = state[1];
truelight@0: 		}
truelight@0: 		return false;
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: static void FillWithStationData(TrainTrackFollowerData *fd, Vehicle *v)
truelight@0: {
dominik@103:         fd->dest_coords = v->dest_tile;
tron@555:         if (v->current_order.type == OT_GOTO_STATION)
tron@555:                 fd->station_index = v->current_order.station;
dominik@103:         else
dominik@103:                 fd->station_index = -1;
dominik@103: 
truelight@0: }
truelight@0: 
truelight@0: static const byte _initial_tile_subcoord[6][4][3] = {
truelight@0: {{ 15, 8, 1 },{ 0, 0, 0 },{ 0, 8, 5 },{ 0, 0, 0 }},
truelight@0: {{  0, 0, 0 },{ 8, 0, 3 },{ 0, 0, 0 },{ 8,15, 7 }},
truelight@0: {{  0, 0, 0 },{ 7, 0, 2 },{ 0, 7, 6 },{ 0, 0, 0 }},
truelight@0: {{ 15, 8, 2 },{ 0, 0, 0 },{ 0, 0, 0 },{ 8,15, 6 }},
truelight@0: {{ 15, 7, 0 },{ 8, 0, 4 },{ 0, 0, 0 },{ 0, 0, 0 }},
truelight@0: {{  0, 0, 0 },{ 0, 0, 0 },{ 0, 8, 4 },{ 7,15, 0 }},
truelight@0: };
truelight@0: 
truelight@0: static const uint32 _reachable_tracks[4] = {
truelight@0: 	0x10091009,
truelight@0: 	0x00160016,
truelight@0: 	0x05200520,
truelight@0: 	0x2A002A00,
truelight@0: };
truelight@0: 
truelight@0: static const byte _search_directions[6][4] = {
truelight@0: 	{ 0, 9, 2, 9 }, // track 1
truelight@0: 	{ 9, 1, 9, 3 }, // track 2
truelight@0: 	{ 9, 0, 3, 9 }, // track upper
truelight@0: 	{ 1, 9, 9, 2 }, // track lower
truelight@0: 	{ 3, 2, 9, 9 }, // track left
truelight@0: 	{ 9, 9, 1, 0 }, // track right
truelight@0: };
truelight@0: 
truelight@0: static const byte _pick_track_table[6] = {1, 3, 2, 2, 0, 0};
matthijs@1247: #if PF_BENCHMARK
matthijs@1247: unsigned int rdtsc()
matthijs@1247: {
matthijs@1247:      unsigned int high, low;
matthijs@1247: 
matthijs@1247:      __asm__ __volatile__ ("rdtsc" : "=a" (low), "=d" (high));
matthijs@1247:      return low;
matthijs@1247: }
matthijs@1247: #endif
matthijs@1247: 
truelight@0: 
truelight@0: /* choose a track */
matthijs@1247: static byte ChooseTrainTrack(Vehicle *v, uint tile, int enterdir, byte trackbits)
truelight@193: {
truelight@0: 	TrainTrackFollowerData fd;
truelight@0: 	int bits = trackbits;
truelight@0: 	uint best_track;
matthijs@1247: #if PF_BENCHMARK
truelight@0: 	int time = rdtsc();
truelight@0: 	static float f;
truelight@0: #endif
truelight@0: 
truelight@0: 	assert( (bits & ~0x3F) == 0);
truelight@0: 
matthijs@1247: 	/* quick return in case only one possible track is available */
truelight@0: 	if (KILL_FIRST_BIT(bits) == 0)
truelight@0: 		return FIND_FIRST_BIT(bits);
truelight@0: 
matthijs@1247: 	if (_patches.new_pathfinding_all) { /* Use a new pathfinding for everything */
matthijs@1247: 		NPFFindStationOrTileData fstd;
matthijs@1247: 		NPFFoundTargetData ftd;
matthijs@1247: 		byte trackdir;
matthijs@1247: 
matthijs@1247: 		NPFFillWithOrderData(&fstd, v);
matthijs@1247: 		/* The enterdir for the new tile, is the exitdir for the old tile */
matthijs@1247: 		trackdir = _track_exitdir_to_trackdir[FIND_FIRST_BIT(v->u.rail.track)][enterdir];
matthijs@1247: 		assert(trackdir != 0xff);
matthijs@1247: 
matthijs@1330: 		ftd = NPFRouteToStationOrTile(tile - TileOffsByDir(enterdir), trackdir, &fstd, TRANSPORT_RAIL, v->owner);
matthijs@1247: 		if (ftd.best_bird_dist != 0 || ftd.best_trackdir == 0xff) {
matthijs@1247: 			/* Not found, or we are already there. Just do something */
matthijs@1247: 			//TODO: maybe display error?
matthijs@1247: 			//TODO: go straight ahead if possible?
truelight@0: 			best_track = FIND_FIRST_BIT(bits);
truelight@0: 		} else {
matthijs@1247: 			/* Discard enterdir information, making it a normal track */
matthijs@1247: 			best_track = ftd.best_trackdir & 7; /* TODO: Wrapper function? */
truelight@0: 		}
truelight@0: 	} else {
matthijs@1247: 
matthijs@1247: 		FillWithStationData(&fd, v);
matthijs@1247: 
matthijs@1247: 		if (_patches.new_pathfinding) {
matthijs@1247: 			/* New train pathfinding */
truelight@0: 			fd.best_bird_dist = (uint)-1;
truelight@0: 			fd.best_track_dist = (uint)-1;
matthijs@1247: 			fd.best_track = 0xFF;
matthijs@1247: 			NewTrainPathfind(tile - TileOffsByDir(enterdir), enterdir, (TPFEnumProc*)TrainTrackFollower, &fd, NULL);
matthijs@1247: 
matthijs@1247: 	//		printf("Train %d %s\n", v->unitnumber, fd.best_track_dist == -1 ? "NOTFOUND" : "FOUND");
matthijs@1247: 
matthijs@1247: 			if (fd.best_track == 0xff) {
matthijs@1247: 				// blaha
matthijs@1247: 				best_track = FIND_FIRST_BIT(bits);
matthijs@1247: 			} else {
matthijs@1247: 				best_track = fd.best_track & 7;
matthijs@1247: 			}
matthijs@1247: 		} else {
matthijs@1247: 			/* Original pathfinding */
matthijs@1247: 			int i, r;
matthijs@1247: 			uint best_bird_dist  = 0;
matthijs@1247: 			uint best_track_dist = 0;
matthijs@1247: 			byte train_dir = v->direction & 3;
matthijs@1247: 
matthijs@1247: 
matthijs@1247: 			best_track = (uint)-1;
matthijs@1247: 
matthijs@1247: 			do {
matthijs@1247: 				i = FIND_FIRST_BIT(bits);
matthijs@1247: 				bits = KILL_FIRST_BIT(bits);
matthijs@1247: 
matthijs@1247: 				fd.best_bird_dist = (uint)-1;
matthijs@1247: 				fd.best_track_dist = (uint)-1;
matthijs@1247: 
matthijs@1247: 				NewTrainPathfind(tile, _search_directions[i][enterdir], (TPFEnumProc*)TrainTrackFollower, &fd, NULL);
matthijs@1247: 				if (best_track != (uint)-1) {
matthijs@1247: 					if (best_track_dist == (uint)-1) {
matthijs@1247: 						if (fd.best_track_dist == (uint)-1) {
matthijs@1247: 							/* neither reached the destination, pick the one with the smallest bird dist */
matthijs@1247: 							if (fd.best_bird_dist > best_bird_dist) goto bad;
matthijs@1247: 							if (fd.best_bird_dist < best_bird_dist) goto good;
matthijs@1247: 						} else {
matthijs@1247: 							/* we found the destination for the first time */
matthijs@1247: 							goto good;
matthijs@1247: 						}
truelight@0: 					} else {
matthijs@1247: 						if (fd.best_track_dist == (uint)-1) {
matthijs@1247: 							/* didn't find destination, but we've found the destination previously */
matthijs@1247: 							goto bad;
matthijs@1247: 						} else {
matthijs@1247: 							/* both old & new reached the destination, compare track length */
matthijs@1247: 							if (fd.best_track_dist > best_track_dist) goto bad;
matthijs@1247: 							if (fd.best_track_dist < best_track_dist) goto good;
matthijs@1247: 						}
truelight@0: 					}
matthijs@1247: 
matthijs@1247: 					/* if we reach this position, there's two paths of equal value so far.
matthijs@1247: 					 * pick one randomly. */
matthijs@1247: 					r = (byte)Random();
matthijs@1247: 					if (_pick_track_table[i] == train_dir) r += 80;
matthijs@1247: 					if (_pick_track_table[best_track] == train_dir) r -= 80;
matthijs@1247: 
matthijs@1247: 					if (r <= 127) goto bad;
truelight@0: 				}
matthijs@1247: 		good:;
matthijs@1247: 				best_track = i;
matthijs@1247: 				best_bird_dist = fd.best_bird_dist;
matthijs@1247: 				best_track_dist = fd.best_track_dist;
matthijs@1247: 		bad:;
matthijs@1247: 			} while (bits != 0);
matthijs@1247: 	//		printf("Train %d %s\n", v->unitnumber, best_track_dist == -1 ? "NOTFOUND" : "FOUND");
matthijs@1247: 			assert(best_track != (uint)-1);
matthijs@1247: 		}
truelight@0: 	}
truelight@0: 
matthijs@1247: #if PF_BENCHMARK
truelight@0: 	time = rdtsc() - time;
truelight@0: 	f = f * 0.99 + 0.01 * time;
truelight@0: 	printf("PF time = %d %f\n", time, f);
truelight@0: #endif
truelight@0: 
truelight@0: 	return best_track;
truelight@0: }
truelight@0: 
truelight@0: 
truelight@0: static bool CheckReverseTrain(Vehicle *v)
truelight@0: {
truelight@0: 	TrainTrackFollowerData fd;
truelight@0: 	int i, r;
truelight@0: 	int best_track;
truelight@0: 	uint best_bird_dist  = 0;
truelight@0: 	uint best_track_dist = 0;
truelight@0: 	uint reverse, reverse_best;
truelight@0: 
truelight@0: 	if (_opt.diff.line_reverse_mode != 0 ||
truelight@0: 			v->u.rail.track & 0xC0 ||
truelight@0: 			!(v->direction & 1))
truelight@0: 		return false;
truelight@0: 
truelight@0: 	FillWithStationData(&fd, v);
truelight@0: 
truelight@0: 	best_track = -1;
truelight@0: 	reverse_best = reverse = 0;
truelight@0: 
truelight@0: 	assert(v->u.rail.track);
truelight@0: 
truelight@0: 	i = _search_directions[FIND_FIRST_BIT(v->u.rail.track)][v->direction>>1];
truelight@0: 
matthijs@1247: 	if (_patches.new_pathfinding_all) { /* Use a new pathfinding for everything */
matthijs@1247: 		NPFFindStationOrTileData fstd;
matthijs@1247: 		NPFFoundTargetData ftd;
matthijs@1247: 		byte trackdir, trackdir_rev;
matthijs@1247: 		Vehicle* last = GetLastVehicleInChain(v);
matthijs@1247: 
matthijs@1247: 		NPFFillWithOrderData(&fstd, v);
matthijs@1247: 
matthijs@1247: 		trackdir = _track_direction_to_trackdir[FIND_FIRST_BIT(v->u.rail.track)][v->direction];
matthijs@1247: 		trackdir_rev = REVERSE_TRACKDIR(_track_direction_to_trackdir[FIND_FIRST_BIT(last->u.rail.track)][last->direction]);
matthijs@1247: 		assert(trackdir != 0xff);
matthijs@1247: 		assert(trackdir_rev != 0xff);
matthijs@1247: 
matthijs@1330: 		ftd = NPFRouteToStationOrTileTwoWay(v->tile, trackdir, last->tile, trackdir_rev, &fstd, TRANSPORT_RAIL, v->owner);
matthijs@1247: 		if (ftd.best_bird_dist != 0) {
matthijs@1247: 			/* We didn't find anything, just keep on going straight ahead */
matthijs@1247: 			reverse_best = false;
matthijs@1247: 		} else {
matthijs@1247: 			if (ftd.node.user_data[NPF_NODE_FLAGS] & NPF_FLAG_REVERSE)
matthijs@1247: 				reverse_best = true;
matthijs@1247: 			else
matthijs@1247: 				reverse_best = false;
matthijs@1247: 		}
matthijs@1247: 	} else {
matthijs@1247: 		while(true) {
matthijs@1247: 			fd.best_bird_dist = (uint)-1;
matthijs@1247: 			fd.best_track_dist = (uint)-1;
matthijs@1247: 
matthijs@1247: 			NewTrainPathfind(v->tile, reverse ^ i, (TPFEnumProc*)TrainTrackFollower, &fd, NULL);
matthijs@1247: 
matthijs@1247: 			if (best_track != -1) {
matthijs@1247: 				if (best_bird_dist != 0) {
matthijs@1247: 					if (fd.best_bird_dist != 0) {
matthijs@1247: 						/* neither reached the destination, pick the one with the smallest bird dist */
matthijs@1247: 						if (fd.best_bird_dist > best_bird_dist) goto bad;
matthijs@1247: 						if (fd.best_bird_dist < best_bird_dist) goto good;
matthijs@1247: 					} else {
matthijs@1247: 						/* we found the destination for the first time */
matthijs@1247: 						goto good;
matthijs@1247: 					}
truelight@0: 				} else {
matthijs@1247: 					if (fd.best_bird_dist != 0) {
matthijs@1247: 						/* didn't find destination, but we've found the destination previously */
matthijs@1247: 						goto bad;
matthijs@1247: 					} else {
matthijs@1247: 						/* both old & new reached the destination, compare track length */
matthijs@1247: 						if (fd.best_track_dist > best_track_dist) goto bad;
matthijs@1247: 						if (fd.best_track_dist < best_track_dist) goto good;
matthijs@1247: 					}
truelight@0: 				}
matthijs@1247: 
matthijs@1247: 				/* if we reach this position, there's two paths of equal value so far.
matthijs@1247: 				 * pick one randomly. */
matthijs@1247: 				r = (byte)Random();
matthijs@1247: 				if (_pick_track_table[i] == (v->direction & 3)) r += 80;
matthijs@1247: 				if (_pick_track_table[best_track] == (v->direction & 3)) r -= 80;
matthijs@1247: 				if (r <= 127) goto bad;
truelight@0: 			}
matthijs@1247: good:;
matthijs@1247: 			best_track = i;
matthijs@1247: 			best_bird_dist = fd.best_bird_dist;
matthijs@1247: 			best_track_dist = fd.best_track_dist;
matthijs@1247: 			reverse_best = reverse;
matthijs@1247: bad:;
matthijs@1247: 			if (reverse != 0)
matthijs@1247: 				break;
matthijs@1247: 			reverse = 2;
truelight@0: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	return reverse_best != 0;
truelight@0: }
truelight@0: 
truelight@0: static bool ProcessTrainOrder(Vehicle *v)
truelight@0: {
truelight@1024: 	const Order *order;
truelight@0: 	bool result;
truelight@0: 
truelight@0: 	// These are un-interruptible
tron@555: 	if (v->current_order.type >= OT_GOTO_DEPOT &&
tron@555: 			v->current_order.type <= OT_LEAVESTATION) {
truelight@1024: 		// Let a depot order in the orderlist interrupt.
tron@555: 		if (v->current_order.type != OT_GOTO_DEPOT ||
tron@555: 				!(v->current_order.flags & OF_UNLOAD))
truelight@0: 			return false;
truelight@0: 	}
truelight@0: 
tron@555: 	if (v->current_order.type == OT_GOTO_DEPOT &&
tron@555: 			(v->current_order.flags & (OF_UNLOAD | OF_FULL_LOAD)) ==  (OF_UNLOAD | OF_FULL_LOAD) &&
bjarni@1208: 			!VehicleNeedsService(v) && !v->set_for_replacement) {
truelight@0: 		v->cur_order_index++;
truelight@0: 	}
truelight@0: 
darkvater@395: 	// check if we've reached the waypoint?
tron@555: 	if (v->current_order.type == OT_GOTO_WAYPOINT && v->tile == v->dest_tile) {
truelight@0: 		v->cur_order_index++;
truelight@0: 	}
truelight@0: 
truelight@193: 	// check if we've reached a non-stop station while TTDPatch nonstop is enabled..
tron@555: 	if (_patches.new_nonstop && v->current_order.flags & OF_NON_STOP &&
celestar@1337: 		v->current_order.station == _map2[v->tile] && IsTileType(v->tile, MP_STATION) ) {
truelight@193: 		v->cur_order_index++;
truelight@0: 	}
truelight@0: 
truelight@0: 	// Get the current order
truelight@0: 	if (v->cur_order_index >= v->num_orders)
truelight@0: 		v->cur_order_index = 0;
truelight@1024: 
truelight@1024: 	order = GetVehicleOrder(v, v->cur_order_index);
truelight@0: 
truelight@0: 	// If no order, do nothing.
truelight@1024: 	if (order == NULL) {
tron@555: 		v->current_order.type = OT_NOTHING;
tron@555: 		v->current_order.flags = 0;
truelight@0: 		v->dest_tile = 0;
truelight@0: 		return false;
truelight@0: 	}
truelight@0: 
truelight@0: 	// If it is unchanged, keep it.
truelight@1024: 	if (order->type    == v->current_order.type &&
truelight@1024: 			order->flags   == v->current_order.flags &&
truelight@1024: 			order->station == v->current_order.station)
truelight@0: 		return false;
truelight@0: 
truelight@0: 	// Otherwise set it, and determine the destination tile.
truelight@1024: 	v->current_order = *order;
truelight@0: 
truelight@0: 	v->dest_tile = 0;
truelight@0: 
truelight@0: 	result = false;
truelight@1024: 	switch (order->type) {
truelight@1024: 		case OT_GOTO_STATION:
truelight@1024: 			if (order->station == v->last_station_visited)
truelight@1266: 				v->last_station_visited = INVALID_STATION;
truelight@1024: 			v->dest_tile = GetStation(order->station)->xy;
truelight@1024: 			result = CheckReverseTrain(v);
truelight@1024: 			break;
truelight@1024: 
truelight@1024: 		case OT_GOTO_DEPOT:
truelight@1313: 			v->dest_tile = GetDepot(order->station)->xy;
truelight@1024: 			result = CheckReverseTrain(v);
truelight@1024: 			break;
truelight@1024: 
truelight@1024: 		case OT_GOTO_WAYPOINT:
truelight@1024: 			v->dest_tile = _waypoints[order->station].xy;
truelight@1024: 			result = CheckReverseTrain(v);
truelight@1024: 			break;
truelight@0: 	}
truelight@0: 
truelight@1024: 	InvalidateVehicleOrder(v);
truelight@0: 
truelight@0: 	return result;
truelight@0: }
truelight@0: 
truelight@0: static void MarkTrainDirty(Vehicle *v)
truelight@0: {
truelight@0: 	do {
truelight@0: 		v->cur_image = GetTrainImage(v, v->direction);
truelight@0: 		MarkAllViewportsDirty(v->left_coord, v->top_coord, v->right_coord + 1, v->bottom_coord + 1);
truelight@0: 	} while ( (v=v->next) != NULL);
truelight@0: }
truelight@0: 
truelight@0: static void HandleTrainLoading(Vehicle *v, bool mode)
truelight@0: {
tron@555: 	if (v->current_order.type == OT_NOTHING)
truelight@0: 		return;
truelight@193: 
tron@555: 	if (v->current_order.type != OT_DUMMY) {
tron@555: 		if (v->current_order.type != OT_LOADING)
truelight@0: 			return;
truelight@0: 
truelight@0: 		if (mode)
truelight@0: 			return;
truelight@0: 
truelight@0: 		// don't mark the train as lost if we're loading on the final station.
tron@555: 		if (v->current_order.flags & OF_NON_STOP)
truelight@0: 			v->u.rail.days_since_order_progr = 0;
truelight@0: 
truelight@0: 		if (--v->load_unload_time_rem)
truelight@0: 			return;
truelight@0: 
tron@555: 		if (v->current_order.flags & OF_FULL_LOAD && CanFillVehicle(v)) {
matthijs@882: 			v->u.rail.days_since_order_progr = 0; /* Prevent a train lost message for full loading trains */
truelight@0: 			SET_EXPENSES_TYPE(EXPENSES_TRAIN_INC);
truelight@0: 			if (LoadUnloadVehicle(v)) {
truelight@0: 				InvalidateWindow(WC_TRAINS_LIST, v->owner);
truelight@0: 				MarkTrainDirty(v);
truelight@193: 
truelight@0: 				// need to update acceleration since the goods on the train changed.
truelight@0: 				UpdateTrainAcceleration(v);
truelight@0: 			}
truelight@0: 			return;
truelight@0: 		}
truelight@193: 
truelight@0: 		TrainPlayLeaveStationSound(v);
truelight@193: 
truelight@0: 		{
tron@555: 			Order b = v->current_order;
tron@555: 			v->current_order.type = OT_LEAVESTATION;
tron@555: 			v->current_order.flags = 0;
truelight@193: 
bjarni@1208: 			if (v->current_order.type != OT_GOTO_DEPOT && v->owner == _local_player) {
bjarni@1208: 				// only the vehicle owner needs to calculate the rest (locally)
bjarni@1208: 				if ((_autoreplace_array[v->engine_type] != v->engine_type) ||
bjarni@1208: 					(_patches.autorenew && v->age - v->max_age > (_patches.autorenew_months * 30))) {
bjarni@1208: 					byte flags = 1;
bjarni@1208: 					// the flags means, bit 0 = needs to go to depot, bit 1 = have depot in orders
bjarni@1208: 					if (VehicleHasDepotOrders(v)) SETBIT(flags, 1);
bjarni@1208: 					if (!(HASBIT(flags, 1) && v->set_for_replacement)) {
bjarni@1208: 						_current_player = _local_player;
bjarni@1208: 						DoCommandP(v->tile, v->index, flags, NULL, CMD_TRAIN_GOTO_DEPOT | CMD_SHOW_NO_ERROR);
bjarni@1208: 						_current_player = OWNER_NONE;
bjarni@1208: 					}
bjarni@1208: 				} else { // no need to go to a depot
bjarni@1208: 					if (v->set_for_replacement) {
bjarni@1208: 						// it seems that the user clicked "Stop replacing"
bjarni@1208: 						_current_player = _local_player;
bjarni@1208: 						DoCommandP(v->tile, v->index, 1 | (1 << 2), NULL, CMD_TRAIN_GOTO_DEPOT | CMD_SHOW_NO_ERROR);
bjarni@1208: 						_current_player = OWNER_NONE;
bjarni@1208: 					}
bjarni@1208: 				}
bjarni@1208: 			}
truelight@0: 			// If this was not the final order, don't remove it from the list.
tron@555: 			if (!(b.flags & OF_NON_STOP))
truelight@0: 				return;
truelight@0: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	v->u.rail.days_since_order_progr = 0;
truelight@0: 	v->cur_order_index++;
truelight@1024: 	InvalidateVehicleOrder(v);
truelight@0: }
truelight@0: 
truelight@0: static int UpdateTrainSpeed(Vehicle *v)
truelight@0: {
truelight@0: 	uint spd;
truelight@0: 	uint accel;
truelight@0: 
truelight@954: 	if (v->vehstatus & VS_STOPPED || HASBIT(v->u.rail.flags, VRF_REVERSING)) {
celestar@1179: 		if (_patches.realistic_acceleration)
celestar@1179: 			accel = GetTrainAcceleration(v, AM_BRAKE) * 2;
celestar@1179: 		else
celestar@1179: 			accel = v->acceleration * -2;
truelight@0: 	} else {
celestar@1179: 		if (_patches.realistic_acceleration)
celestar@1179: 			accel = GetTrainAcceleration(v, AM_ACCEL);
celestar@1179: 		else
celestar@1179: 			accel = v->acceleration;
truelight@0: 	}
truelight@0: 
truelight@0: 	spd = v->subspeed + accel * 2;
truelight@0: 	v->subspeed = (byte)spd;
celestar@1179: 	{
celestar@1179: 		int tempmax = v->max_speed;
celestar@1179: 		if (v->cur_speed > v->max_speed)
celestar@1179: 			tempmax = v->cur_speed - (v->cur_speed / 10) - 1;
celestar@1179: 		v->cur_speed = spd = clamp(v->cur_speed + ((int)spd >> 8), 0, tempmax);
celestar@1179: 	}
truelight@0: 
truelight@0: 	if (!(v->direction & 1)) spd = spd * 3 >> 2;
truelight@0: 
truelight@0: 	spd += v->progress;
truelight@0: 	v->progress = (byte)spd;
truelight@0: 	return (spd >> 8);
truelight@0: }
truelight@0: 
truelight@0: static void TrainEnterStation(Vehicle *v, int station)
truelight@0: {
truelight@0: 	Station *st;
truelight@0: 	uint32 flags;
truelight@0: 
truelight@0: 	v->last_station_visited = station;
truelight@0: 
truelight@0: 	/* check if a train ever visited this station before */
truelight@919: 	st = GetStation(station);
truelight@0: 	if (!(st->had_vehicle_of_type & HVOT_TRAIN)) {
truelight@0: 		st->had_vehicle_of_type |= HVOT_TRAIN;
tron@534: 		SetDParam(0, st->index);
truelight@0: 		flags = (v->owner == _local_player) ? NEWS_FLAGS(NM_THIN, NF_VIEWPORT|NF_VEHICLE, NT_ARRIVAL_PLAYER, 0) : NEWS_FLAGS(NM_THIN, NF_VIEWPORT|NF_VEHICLE, NT_ARRIVAL_OTHER, 0);
truelight@0: 		AddNewsItem(
truelight@0: 			STR_8801_CITIZENS_CELEBRATE_FIRST,
truelight@0: 			flags,
truelight@0: 			v->index,
truelight@0: 			0);
truelight@0: 	}
truelight@0: 
truelight@0: 	// Did we reach the final destination?
tron@555: 	if (v->current_order.type == OT_GOTO_STATION &&
tron@555: 			v->current_order.station == (byte)station) {
truelight@0: 		// Yeah, keep the load/unload flags
truelight@0: 		// Non Stop now means if the order should be increased.
tron@555: 		v->current_order.type = OT_LOADING;
tron@555: 		v->current_order.flags &= OF_FULL_LOAD | OF_UNLOAD;
tron@555: 		v->current_order.flags |= OF_NON_STOP;
truelight@0: 	} else {
truelight@0: 		// No, just do a simple load
tron@555: 		v->current_order.type = OT_LOADING;
tron@555: 		v->current_order.flags = 0;
truelight@0: 	}
tron@555: 	v->current_order.station = 0;
truelight@0: 
truelight@0: 	SET_EXPENSES_TYPE(EXPENSES_TRAIN_INC);
truelight@0: 	if (LoadUnloadVehicle(v) != 0) {
truelight@0: 		InvalidateWindow(WC_TRAINS_LIST, v->owner);
truelight@0: 		MarkTrainDirty(v);
truelight@0: 		UpdateTrainAcceleration(v);
truelight@0: 	}
darkvater@755: 	InvalidateWindowWidget(WC_VEHICLE_VIEW, v->index, STATUS_BAR);
truelight@0: }
truelight@0: 
truelight@954: static byte AfterSetTrainPos(Vehicle *v, bool new_tile)
truelight@0: {
truelight@0: 	byte new_z, old_z;
truelight@193: 
truelight@0: 	// need this hint so it returns the right z coordinate on bridges.
truelight@0: 	_get_z_hint = v->z_pos;
truelight@0: 	new_z = GetSlopeZ(v->x_pos, v->y_pos);
truelight@0: 	_get_z_hint = 0;
truelight@0: 
truelight@0: 	old_z = v->z_pos;
truelight@0: 	v->z_pos = new_z;
truelight@0: 
truelight@954: 	if (new_tile) {
truelight@954: 		CLRBIT(v->u.rail.flags, VRF_GOINGUP);
truelight@954: 		CLRBIT(v->u.rail.flags, VRF_GOINGDOWN);
truelight@954: 
truelight@954: 		if (new_z != old_z) {
truelight@954: 			SETBIT(v->u.rail.flags, (new_z > old_z) ? VRF_GOINGUP : VRF_GOINGDOWN);
truelight@954: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	VehiclePositionChanged(v);
truelight@0: 	EndVehicleMove(v);
truelight@0: 	return old_z;
truelight@0: }
truelight@0: 
truelight@0: static const byte _new_vehicle_direction_table[11] = {
truelight@0: 	0, 7, 6, 0,
truelight@0: 	1, 0, 5, 0,
truelight@0: 	2, 3, 4,
truelight@0: };
truelight@0: 
truelight@0: static int GetNewVehicleDirectionByTile(uint new_tile, uint old_tile)
truelight@0: {
tron@926: 	uint offs = (TileY(new_tile) - TileY(old_tile) + 1) * 4 +
tron@926: 							TileX(new_tile) - TileX(old_tile) + 1;
truelight@0: 	assert(offs < 11);
truelight@0: 	return _new_vehicle_direction_table[offs];
truelight@0: }
truelight@0: 
truelight@0: static int GetNewVehicleDirection(Vehicle *v, int x, int y)
truelight@0: {
truelight@0: 	uint offs = (y - v->y_pos + 1) * 4 + (x - v->x_pos + 1);
truelight@0: 	assert(offs < 11);
truelight@0: 	return _new_vehicle_direction_table[offs];
truelight@0: }
truelight@0: 
truelight@0: static int GetDirectionToVehicle(Vehicle *v, int x, int y)
truelight@0: {
truelight@0: 	byte offs;
truelight@0: 
truelight@0: 	x -= v->x_pos;
truelight@0: 	if (x >= 0) {
truelight@0: 		offs = (x > 2) ? 0 : 1;
truelight@0: 	} else {
truelight@0: 		offs = (x < -2) ? 2 : 1;
truelight@0: 	}
truelight@0: 
truelight@0: 	y -= v->y_pos;
truelight@0: 	if (y >= 0) {
truelight@0: 		offs += ((y > 2) ? 0 : 1) * 4;
truelight@0: 	} else {
truelight@0: 		offs += ((y < -2) ? 2 : 1) * 4;
truelight@0: 	}
truelight@0: 
truelight@0: 	assert(offs < 11);
truelight@0: 	return _new_vehicle_direction_table[offs];
truelight@0: }
truelight@0: 
truelight@0: /* Check if the vehicle is compatible with the specified tile */
tron@1048: static bool CheckCompatibleRail(const Vehicle *v, TileIndex tile)
truelight@0: {
tron@1214: 	switch (GetTileType(tile)) {
tron@1048: 		case MP_RAILWAY:
tron@1048: 		case MP_STATION:
tron@1048: 			// normal tracks, jump to owner check
tron@1048: 			break;
tron@1048: 
tron@1048: 		case MP_TUNNELBRIDGE:
tron@1048: 			if ((_map5[tile] & 0xC0) == 0xC0) { // is bridge middle part?
tron@1192: 				uint height;
tron@1192: 				uint tileh = GetTileSlope(tile, &height);
tron@1048: 
tron@1048: 				// correct Z position of a train going under a bridge on slopes
tron@1394: 				if (CorrectZ(tileh)) height += 8;
tron@1192: 
tron@1192: 				if (v->z_pos != height) return true; // train is going over bridge
tron@1048: 			}
tron@1048: 			break;
tron@1048: 
tron@1048: 		case MP_STREET:
tron@1048: 			// tracks over roads, do owner check of tracks (_map_owner[tile])
tron@1048: 			return
tron@1048: 				_map_owner[tile] == v->owner &&
bjarni@1067: 				(v->subtype != TS_Front_Engine || (_map3_hi[tile] & 0xF) == v->u.rail.railtype);
tron@1048: 
tron@1048: 		default:
tron@1048: 			return true;
tron@1048: 	}
tron@1048: 
tron@1048: 	return
tron@1048: 		_map_owner[tile] == v->owner &&
bjarni@1067: 		(v->subtype != TS_Front_Engine || (_map3_lo[tile] & 0xF) == v->u.rail.railtype);
truelight@0: }
truelight@0: 
truelight@0: typedef struct {
truelight@0: 	byte small_turn, large_turn;
truelight@0: 	byte z_up; // fraction to remove when moving up
truelight@0: 	byte z_down; // fraction to remove when moving down
truelight@0: } RailtypeSlowdownParams;
truelight@0: 
truelight@0: static const RailtypeSlowdownParams _railtype_slowdown[3] = {
truelight@0: 	// normal accel
truelight@0: 	{256/4, 256/2, 256/4, 2}, // normal
truelight@0: 	{256/4, 256/2, 256/4, 2}, // monorail
truelight@0: 	{0,     256/2, 256/4, 2}, // maglev
truelight@0: };
truelight@0: 
truelight@0: /* Modify the speed of the vehicle due to a turn */
truelight@0: static void AffectSpeedByDirChange(Vehicle *v, byte new_dir)
truelight@0: {
truelight@0: 	byte diff;
truelight@0: 	const RailtypeSlowdownParams *rsp;
truelight@0: 
truelight@0: 	if (_patches.realistic_acceleration || (diff = (v->direction - new_dir) & 7) == 0)
truelight@0: 		return;
truelight@0: 
truelight@0: 	rsp = &_railtype_slowdown[v->u.rail.railtype];
truelight@0: 	v->cur_speed -= ((diff == 1 || diff == 7) ? rsp->small_turn : rsp->large_turn) * v->cur_speed >> 8;
truelight@0: }
truelight@0: 
truelight@0: /* Modify the speed of the vehicle due to a change in altitude */
truelight@0: static void AffectSpeedByZChange(Vehicle *v, byte old_z)
truelight@0: {
truelight@0: 	const RailtypeSlowdownParams *rsp;
truelight@0: 	if (old_z == v->z_pos || _patches.realistic_acceleration)
truelight@0: 		return;
truelight@0: 
truelight@0: 	rsp = &_railtype_slowdown[v->u.rail.railtype];
truelight@0: 
truelight@0: 	if (old_z < v->z_pos) {
truelight@0: 		v->cur_speed -= (v->cur_speed * rsp->z_up >> 8);
truelight@0: 	} else {
truelight@0: 		uint16 spd = v->cur_speed + rsp->z_down;
truelight@0: 		if (spd <= v->max_speed)
truelight@0: 			v->cur_speed = spd;
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: static const byte _otherside_signal_directions[14] = {
truelight@0: 	1, 3, 1, 3, 5, 3, 0, 0,
truelight@0: 	5, 7, 7, 5, 7, 1,
truelight@0: };
truelight@0: 
truelight@0: static void TrainMovedChangeSignals(uint tile, int dir)
truelight@0: {
truelight@0: 	int i;
tron@1035: 	if (IsTileType(tile, MP_RAILWAY) && (_map5[tile] & 0xC0) == 0x40) {
truelight@0: 		i = FindFirstBit2x64((_map5[tile]+(_map5[tile]<<8)) & _reachable_tracks[dir]);
truelight@0: 		UpdateSignalsOnSegment(tile, _otherside_signal_directions[i]);
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: 
truelight@0: typedef struct TrainCollideChecker {
truelight@0: 	Vehicle *v, *v_skip;
truelight@0: 
truelight@0: } TrainCollideChecker;
truelight@0: 
tron@1095: static void *FindTrainCollideEnum(Vehicle *v, TrainCollideChecker *tcc)
truelight@0: {
truelight@0: 	if (v == tcc->v || v == tcc->v_skip || v->type != VEH_Train || v->u.rail.track==0x80)
truelight@0: 		return 0;
truelight@0: 
truelight@0: 	if ( myabs(v->z_pos - tcc->v->z_pos) > 6 ||
truelight@0: 			 myabs(v->x_pos - tcc->v->x_pos) >= 6 ||
truelight@0: 			 myabs(v->y_pos - tcc->v->y_pos) >= 6)
truelight@0: 				return NULL;
truelight@0: 	return v;
truelight@0: }
truelight@0: 
truelight@0: static void SetVehicleCrashed(Vehicle *v)
truelight@0: {
truelight@0: 	Vehicle *u;
truelight@0: 
truelight@0: 	if (v->u.rail.crash_anim_pos != 0)
truelight@0: 		return;
truelight@0: 
truelight@0: 	v->u.rail.crash_anim_pos++;
truelight@193: 
truelight@0: 	u = v;
truelight@0: 	BEGIN_ENUM_WAGONS(v)
truelight@0: 		v->vehstatus |= VS_CRASHED;
truelight@0: 	END_ENUM_WAGONS(v)
truelight@0: 
darkvater@755: 	InvalidateWindowWidget(WC_VEHICLE_VIEW, u->index, STATUS_BAR);
truelight@0: }
truelight@0: 
truelight@0: static int CountPassengersInTrain(Vehicle *v)
truelight@0: {
truelight@193: 	int num = 0;
truelight@0: 	BEGIN_ENUM_WAGONS(v)
bjarni@1067: 		if (v->cargo_type == CT_PASSENGERS) num += v->cargo_count;
truelight@0: 	END_ENUM_WAGONS(v)
truelight@0: 	return num;
truelight@0: }
truelight@0: 
darkvater@22: /*
darkvater@22:  * Checks whether the specified tried has a collision with another vehicle. If
bjarni@1067:  * so, destroys this vehicle, and the other vehicle if its subtype is 0 (TS_Front_Engine).
darkvater@22:  * Reports the incident in a flashy news item, modifies station ratings and
darkvater@22:  * plays a sound.
darkvater@22:  */
truelight@0: static void CheckTrainCollision(Vehicle *v)
truelight@0: {
truelight@0: 	TrainCollideChecker tcc;
dominik@98: 	Vehicle *coll,*realcoll;
truelight@0: 	int num;
truelight@0: 
truelight@0: 	/* can't collide in depot */
truelight@0: 	if (v->u.rail.track == 0x80)
truelight@0: 		return;
truelight@193: 
truelight@193: 	if ( !(v->u.rail.track == 0x40) )
dominik@98: 		assert((uint)TILE_FROM_XY(v->x_pos, v->y_pos) == v->tile);
truelight@0: 
truelight@0: 	tcc.v = v;
truelight@0: 	tcc.v_skip = v->next;
truelight@0: 
truelight@0: 	/* find colliding vehicle */
dominik@98: 	realcoll = coll = VehicleFromPos(TILE_FROM_XY(v->x_pos, v->y_pos), &tcc, (VehicleFromPosProc*)FindTrainCollideEnum);
truelight@0: 	if (coll == NULL)
truelight@0: 		return;
truelight@193: 
truelight@193: 
truelight@0: 	coll = GetFirstVehicleInChain(coll);
truelight@193: 
truelight@0: 	/* it can't collide with its own wagons */
dominik@98: 	if ( (v == coll) || ( (v->u.rail.track & 0x40) && ( (v->direction & 2) != (realcoll->direction & 2) ) ) )
truelight@0: 		return;
truelight@0: 
truelight@193: 	//two drivers + passangers killed in train v
truelight@0: 	num = 2 + CountPassengersInTrain(v);
truelight@193: 	if(!(coll->vehstatus&VS_CRASHED))
truelight@0: 		//two drivers + passangers killed in train coll (if it was not crashed already)
truelight@0: 		num += 2 + CountPassengersInTrain(coll);
truelight@0: 
truelight@0: 	SetVehicleCrashed(v);
bjarni@1067: 	if (coll->subtype == TS_Front_Engine)
truelight@0: 		SetVehicleCrashed(coll);
truelight@193: 
truelight@193: 
tron@534: 	SetDParam(0, num);
truelight@193: 
truelight@0: 	AddNewsItem(STR_8868_TRAIN_CRASH_DIE_IN_FIREBALL,
truelight@0: 		NEWS_FLAGS(NM_THIN, NF_VIEWPORT|NF_VEHICLE, NT_ACCIDENT, 0),
truelight@0: 		v->index,
truelight@0: 		0);
truelight@0: 
truelight@0: 	ModifyStationRatingAround(v->tile, v->owner, -160, 30);
tron@541: 	SndPlayVehicleFx(SND_13_BIG_CRASH, v);
truelight@0: }
truelight@0: 
truelight@0: static void *CheckVehicleAtSignal(Vehicle *v, void *data)
truelight@0: {
truelight@0: 	uint32 d = (uint32)data;
truelight@0: 
bjarni@1067: 	if (v->type == VEH_Train && v->subtype == TS_Front_Engine && v->tile == (TileIndex)(d >> 8)) {
truelight@0: 		byte diff = (v->direction - (byte)d + 2) & 7;
truelight@0: 		if (diff == 2 || (v->cur_speed <= 5 && diff <= 4))
truelight@0: 			return (void*)1;
truelight@0: 	}
truelight@0: 	return 0;
truelight@0: }
truelight@0: 
truelight@0: static void TrainController(Vehicle *v)
truelight@0: {
truelight@0: 	Vehicle *prev = NULL;
truelight@0: 	GetNewVehiclePosResult gp;
truelight@0: 	uint32 r, tracks,ts;
matthijs@1247: 	int i, enterdir, newdir, dir;
truelight@0: 	byte chosen_dir;
truelight@0: 	byte chosen_track;
truelight@0: 	byte old_z;
truelight@0: 
darkvater@22: 	/* For every vehicle after and including the given vehicle */
truelight@0: 	for(;;) {
truelight@0: 		BeginVehicleMove(v);
truelight@193: 
truelight@0: 		if (v->u.rail.track != 0x40) {
darkvater@22: 			/* Not inside tunnel */
truelight@0: 			if (GetNewVehiclePos(v, &gp)) {
darkvater@22: 				/* Staying in the old tile */
truelight@0: 				if (v->u.rail.track == 0x80) {
truelight@0: 					/* inside depot */
truelight@0: 					gp.x = v->x_pos;
truelight@0: 					gp.y = v->y_pos;
truelight@0: 				} else {
darkvater@22: 					/* is not inside depot */
truelight@742: 
truelight@742: 					if (!TrainCheckIfLineEnds(v))
truelight@742: 						return;
truelight@742: 
truelight@0: 					r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
matthijs@1247: 					if (r & 0x8) {
matthijs@1247: 						//debug("%x & 0x8", r);
truelight@0: 						goto invalid_rail;
matthijs@1247: 					}
truelight@0: 					if (r & 0x2) {
truelight@0: 						TrainEnterStation(v, r >> 8);
truelight@0: 						return;
truelight@0: 					}
truelight@0: 
tron@555: 					if (v->current_order.type == OT_LEAVESTATION) {
tron@555: 						v->current_order.type = OT_NOTHING;
tron@555: 						v->current_order.flags = 0;
darkvater@755: 						InvalidateWindowWidget(WC_VEHICLE_VIEW, v->index, STATUS_BAR);
truelight@0: 					}
truelight@0: 				}
truelight@0: 			} else {
truelight@0: 				/* A new tile is about to be entered. */
truelight@0: 
matthijs@1247: 				byte bits;
truelight@0: 				/* Determine what direction we're entering the new tile from */
truelight@0: 				dir = GetNewVehicleDirectionByTile(gp.new_tile, gp.old_tile);
matthijs@1247: 				enterdir = dir >> 1;
matthijs@1247: 				assert(enterdir==0 || enterdir==1 || enterdir==2 || enterdir==3);
truelight@193: 
truelight@0: 				/* Get the status of the tracks in the new tile and mask
truelight@0: 				 * away the bits that aren't reachable. */
matthijs@1247: 				ts = GetTileTrackStatus(gp.new_tile, TRANSPORT_RAIL) & _reachable_tracks[enterdir];
truelight@0: 
truelight@0: 				/* Combine the from & to directions.
truelight@0: 				 * Now, the lower byte contains the track status, and the byte at bit 16 contains
truelight@0: 				 * the signal status. */
truelight@0: 				tracks = ts|(ts >> 8);
matthijs@1247: 				bits = tracks & 0xFF;
matthijs@1247: 				if (_patches.new_pathfinding_all && _patches.forbid_90_deg && prev == NULL)
matthijs@1247: 					/* We allow wagons to make 90 deg turns, because forbid_90_deg
matthijs@1247: 					 * can be switched on halfway a turn */
matthijs@1247: 					bits &= ~_track_crosses_tracks[FIND_FIRST_BIT(v->u.rail.track)];
matthijs@1247: 
matthijs@1247: 				if ( bits == 0) {
matthijs@1247: 					//debug("%x == 0", bits);
truelight@0: 					goto invalid_rail;
matthijs@1247: 				}
truelight@0: 
truelight@0: 				/* Check if the new tile contrains tracks that are compatible
truelight@0: 				 * with the current train, if not, bail out. */
matthijs@1247: 				if (!CheckCompatibleRail(v, gp.new_tile)) {
matthijs@1247: 					//debug("!CheckCompatibleRail(%p, %x)", v, gp.new_tile);
truelight@0: 					goto invalid_rail;
matthijs@1247: 				}
truelight@0: 
truelight@0: 				if (prev == NULL) {
truelight@0: 					/* Currently the locomotive is active. Determine which one of the
truelight@0: 					 * available tracks to choose */
matthijs@1247: 					chosen_track = 1 << ChooseTrainTrack(v, gp.new_tile, enterdir, bits);
matthijs@1247: 					assert(chosen_track & tracks);
truelight@0: 
truelight@0: 					/* Check if it's a red signal and that force proceed is not clicked. */
truelight@0: 					if ( (tracks>>16)&chosen_track && v->u.rail.force_proceed == 0) goto red_light;
truelight@0: 				} else {
truelight@0: 					static byte _matching_tracks[8] = {0x30, 1, 0xC, 2, 0x30, 1, 0xC, 2};
truelight@193: 
truelight@0: 					/* The wagon is active, simply follow the prev vehicle. */
matthijs@1247: 					chosen_track = (byte)(_matching_tracks[GetDirectionToVehicle(prev, gp.x, gp.y)] & bits);
truelight@0: 				}
truelight@0: 
truelight@0: 				/* make sure chosen track is a valid track */
truelight@0: 				assert(chosen_track==1 || chosen_track==2 || chosen_track==4 || chosen_track==8 || chosen_track==16 || chosen_track==32);
truelight@0: 
truelight@0: 				/* Update XY to reflect the entrance to the new tile, and select the direction to use */
truelight@0: 				{
matthijs@1247: 					const byte *b = _initial_tile_subcoord[FIND_FIRST_BIT(chosen_track)][enterdir];
truelight@0: 					gp.x = (gp.x & ~0xF) | b[0];
truelight@0: 					gp.y = (gp.y & ~0xF) | b[1];
truelight@0: 					chosen_dir = b[2];
truelight@0: 				}
truelight@193: 
truelight@0: 				/* Call the landscape function and tell it that the vehicle entered the tile */
truelight@0: 				r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
matthijs@1247: 				if (r&0x8){
matthijs@1247: 					//debug("%x & 0x8", r);
truelight@0: 					goto invalid_rail;
matthijs@1247: 				}
truelight@0: 
bjarni@1067: 				if (v->subtype == TS_Front_Engine) v->load_unload_time_rem = 0;
truelight@0: 
truelight@0: 				if (!(r&0x4)) {
truelight@0: 					v->tile = gp.new_tile;
truelight@0: 					v->u.rail.track = chosen_track;
matthijs@1330: 					assert(v->u.rail.track);
truelight@0: 				}
truelight@0: 
bjarni@1067: 				if (v->subtype == TS_Front_Engine)
matthijs@1247:  				TrainMovedChangeSignals(gp.new_tile, enterdir);
truelight@0: 
darkvater@22: 				/* Signals can only change when the first
darkvater@22: 				 * (above) or the last vehicle moves. */
truelight@0: 				if (v->next == NULL)
matthijs@1247:  				TrainMovedChangeSignals(gp.old_tile, (enterdir) ^ 2);
truelight@193: 
truelight@0: 				if (prev == NULL) {
truelight@0: 					AffectSpeedByDirChange(v, chosen_dir);
truelight@0: 				}
truelight@0: 
truelight@0: 				v->direction = chosen_dir;
truelight@0: 			}
truelight@0: 		} else {
truelight@0: 			/* in tunnel */
truelight@0: 			GetNewVehiclePos(v, &gp);
truelight@193: 
tron@1035: 			if (IsTileType(gp.new_tile, MP_TUNNELBRIDGE) &&
truelight@0: 					!(_map5[gp.new_tile] & 0xF0)) {
truelight@0: 				r = VehicleEnterTile(v, gp.new_tile, gp.x, gp.y);
truelight@0: 				if (r & 0x4) goto common;
truelight@0: 			}
truelight@0: 
truelight@0: 			v->x_pos = gp.x;
truelight@0: 			v->y_pos = gp.y;
truelight@0: 			VehiclePositionChanged(v);
dominik@98: 			if (prev == NULL)
dominik@98: 				CheckTrainCollision(v);
truelight@0: 			goto next_vehicle;
truelight@0: 		}
truelight@0: common:;
truelight@0: 
truelight@0: 		/* update image of train, as well as delta XY */
matthijs@1247: 		newdir = GetNewVehicleDirection(v, gp.x, gp.y);
matthijs@1247: 		UpdateTrainDeltaXY(v, newdir);
matthijs@1247: 		v->cur_image = GetTrainImage(v, newdir);
truelight@0: 
truelight@0: 		v->x_pos = gp.x;
truelight@0: 		v->y_pos = gp.y;
truelight@0: 
truelight@0: 		/* update the Z position of the vehicle */
truelight@954: 		old_z = AfterSetTrainPos(v, (gp.new_tile != gp.old_tile));
truelight@193: 
truelight@0: 		if (prev == NULL) {
darkvater@22: 			/* This is the first vehicle in the train */
truelight@0: 			AffectSpeedByZChange(v, old_z);
truelight@0: 			CheckTrainCollision(v);
truelight@0: 		}
truelight@0: 
darkvater@22: next_vehicle:;
truelight@0: 		/* continue with next vehicle */
truelight@0: 		prev = v;
truelight@0: 		if ((v=v->next) == NULL)
truelight@0: 			return;
truelight@0: 	}
truelight@0: 
truelight@0: invalid_rail:
darkvater@22: 	/* We've reached end of line?? */
truelight@0: 	if (prev != NULL) {
truelight@0: 		error("!Disconnecting train");
truelight@0: 	}
truelight@0: 	goto reverse_train_direction;
truelight@0: 
truelight@0: red_light: {
darkvater@22: 	/* We're in front of a red signal ?? */
truelight@0: 		/* find the first set bit in ts. need to do it in 2 steps, since
truelight@0: 		 * FIND_FIRST_BIT only handles 6 bits at a time. */
truelight@0: 		i = FindFirstBit2x64(ts);
truelight@193: 
matthijs@1247: 		if (!(_map3_lo[gp.new_tile] & _signal_against_trackdir[i])) {
truelight@0: 			v->cur_speed = 0;
truelight@0: 			v->subspeed = 0;
truelight@0: 			v->progress = 255-100;
truelight@0: 			if (++v->load_unload_time_rem < _patches.wait_oneway_signal * 20)
truelight@0: 				return;
matthijs@1247: 		} else if (_map3_lo[gp.new_tile] & _signal_along_trackdir[i]){
truelight@0: 			v->cur_speed = 0;
truelight@0: 			v->subspeed = 0;
truelight@0: 			v->progress = 255-10;
truelight@0: 			if (++v->load_unload_time_rem < _patches.wait_twoway_signal * 73) {
matthijs@1247: 				uint o_tile = gp.new_tile + TileOffsByDir(enterdir);
truelight@0: 				/* check if a train is waiting on the other side */
truelight@0: 				if (VehicleFromPos(o_tile, (void*)( (o_tile<<8) | (dir^4)), (VehicleFromPosProc*)CheckVehicleAtSignal) == NULL)
truelight@0: 					return;
truelight@0: 			}
truelight@0: 		}
truelight@0: 	}
truelight@193: 
truelight@0: reverse_train_direction:
truelight@0: 	v->load_unload_time_rem = 0;
truelight@0: 	v->cur_speed = 0;
truelight@0: 	v->subspeed = 0;
truelight@0: 	ReverseTrainDirection(v);
truelight@0: 
truelight@0: }
truelight@0: 
tron@1430: extern TileIndex CheckTunnelBusy(TileIndex tile, uint *length);
dominik@98: 
Darkvater@1418: /**
Darkvater@1418:  * Deletes/Clears the last wagon of a crashed train. It takes the engine of the
Darkvater@1418:  * train, then goes to the last wagon and deletes that. Each call to this function
Darkvater@1418:  * will remove the last wagon of a crashed train. If this wagon was on a crossing,
Darkvater@1418:  * or inside a tunnel, recalculate the signals as they might need updating
Darkvater@1418:  * @param v the @Vehicle of which last wagon is to be removed
Darkvater@1418:  */
truelight@0: static void DeleteLastWagon(Vehicle *v)
truelight@0: {
truelight@0: 	Vehicle *u = v;
Darkvater@1418: 
Darkvater@1418: 	/* Go to the last wagon and delete the link pointing there
Darkvater@1418: 	 * *u is then the one-before-last wagon, and *v the last
Darkvater@1418: 	 * one which will physicially be removed */
truelight@0: 	while (v->next != NULL) {
truelight@0: 		u = v;
truelight@0: 		v = v->next;
truelight@0: 	}
truelight@0: 	u->next = NULL;
truelight@0: 
truelight@0: 	InvalidateWindow(WC_VEHICLE_DETAILS, v->index);
truelight@0: 	DeleteWindowById(WC_VEHICLE_VIEW, v->index);
tron@588: 	RebuildVehicleLists();
truelight@0: 	InvalidateWindow(WC_COMPANY, v->owner);
truelight@0: 
truelight@0: 	BeginVehicleMove(v);
truelight@0: 	EndVehicleMove(v);
truelight@0: 	DeleteVehicle(v);
truelight@0: 
Darkvater@1418: 	if (!(v->u.rail.track & 0xC0))
Darkvater@1418: 		SetSignalsOnBothDir(v->tile, FIND_FIRST_BIT(v->u.rail.track));
truelight@193: 
dominik@1103: 	/* Check if the wagon was on a road/rail-crossing and disable it if no others are on it */
dominik@1103: 	DisableTrainCrossing(v->tile);
dominik@1103: 
Darkvater@1418: 	if (v->u.rail.track == 0x40) { // inside a tunnel
tron@1430: 		TileIndex endtile = CheckTunnelBusy(v->tile, NULL);
tron@1430: 
tron@1430: 		if (endtile == INVALID_TILE) // tunnel is busy (error returned)
Darkvater@1418: 			return;
Darkvater@1418: 
tron@1431: 		switch (v->direction) {
tron@1431: 			case 1:
tron@1431: 			case 5:
tron@1431: 				SetSignalsOnBothDir(v->tile, 0);
tron@1431: 				SetSignalsOnBothDir(endtile, 0);
tron@1431: 				break;
tron@1431: 
tron@1431: 			case 3:
tron@1431: 			case 7:
tron@1431: 				SetSignalsOnBothDir(v->tile, 1);
tron@1431: 				SetSignalsOnBothDir(endtile, 1);
tron@1431: 				break;
tron@1431: 
tron@1431: 			default:
tron@1431: 				break;
tron@1431: 		}
dominik@98: 	}
truelight@0: }
truelight@0: 
truelight@0: static void ChangeTrainDirRandomly(Vehicle *v)
truelight@0: {
truelight@0: 	static int8 _random_dir_change[4] = { -1, 0, 0, 1};
truelight@193: 
truelight@0: 	do {
dominik@98: 		//I need to buffer the train direction
darkvater@288: 		if (!(v->u.rail.track & 0x40))
celestar@1137: 			v->direction = (v->direction + _random_dir_change[Random()&3]) & 7;
truelight@0: 		if (!(v->vehstatus & VS_HIDDEN)) {
truelight@0: 			BeginVehicleMove(v);
truelight@0: 			UpdateTrainDeltaXY(v, v->direction);
truelight@0: 			v->cur_image = GetTrainImage(v, v->direction);
truelight@954: 			AfterSetTrainPos(v, false);
truelight@0: 		}
truelight@0: 	} while ( (v=v->next) != NULL);
truelight@0: }
truelight@0: 
truelight@0: static void HandleCrashedTrain(Vehicle *v)
truelight@0: {
truelight@0: 	int state = ++v->u.rail.crash_anim_pos, index;
truelight@0: 	uint32 r;
truelight@0: 	Vehicle *u;
truelight@193: 
dominik@98: 	if ( (state == 4) && (v->u.rail.track != 0x40) ) {
tron@1359: 		CreateEffectVehicleRel(v, 4, 4, 8, EV_EXPLOSION_LARGE);
truelight@0: 	}
truelight@0: 
celestar@1137: 	if (state <= 200 && (uint16)(r=Random()) <= 0x2492) {
truelight@0: 		index = (r * 10 >> 16);
truelight@0: 
truelight@0: 		u = v;
truelight@0: 		do {
truelight@0: 			if (--index < 0) {
celestar@1137: 				r = Random();
truelight@0: 
truelight@0: 				CreateEffectVehicleRel(u,
truelight@0: 					2 + ((r>>8)&7),
truelight@0: 					2 + ((r>>16)&7),
truelight@0: 					5 + (r&7),
tron@1359: 					EV_EXPLOSION_SMALL);
truelight@0: 				break;
truelight@0: 			}
truelight@0: 		} while ( (u=u->next) != NULL);
truelight@0: 	}
truelight@0: 
truelight@0: 	if (state <= 240 && !(v->tick_counter&3)) {
truelight@0: 		ChangeTrainDirRandomly(v);
truelight@0: 	}
truelight@0: 
bjarni@1128: 	if (state >= 4440 && !(v->tick_counter&0x1F)) {
truelight@0: 		DeleteLastWagon(v);
bjarni@1128: 		InvalidateWindow(WC_REPLACE_VEHICLE, VEH_Train);
bjarni@1128: 	}
truelight@0: }
truelight@0: 
truelight@0: static void HandleBrokenTrain(Vehicle *v)
truelight@0: {
truelight@0: 	if (v->breakdown_ctr != 1) {
truelight@0: 		v->breakdown_ctr = 1;
truelight@0: 		v->cur_speed = 0;
truelight@0: 
truelight@0: 		if (v->breakdowns_since_last_service != 255)
truelight@0: 			v->breakdowns_since_last_service++;
truelight@193: 
truelight@0: 		InvalidateWindow(WC_VEHICLE_VIEW, v->index);
truelight@0: 		InvalidateWindow(WC_VEHICLE_DETAILS, v->index);
truelight@193: 
tron@541: 		SndPlayVehicleFx((_opt.landscape != LT_CANDY) ?
tron@541: 			SND_10_TRAIN_BREAKDOWN : SND_3A_COMEDY_BREAKDOWN_2, v);
truelight@0: 
truelight@0: 		if (!(v->vehstatus & VS_HIDDEN)) {
truelight@0: 			Vehicle *u = CreateEffectVehicleRel(v, 4, 4, 5, EV_BREAKDOWN_SMOKE);
truelight@0: 			if (u)
truelight@0: 				u->u.special.unk0 = v->breakdown_delay * 2;
truelight@0: 		}
truelight@0: 	}
truelight@0: 
truelight@0: 	if (!(v->tick_counter & 3)) {
truelight@0: 		if (!--v->breakdown_delay) {
truelight@0: 			v->breakdown_ctr = 0;
truelight@0: 			InvalidateWindow(WC_VEHICLE_VIEW, v->index);
truelight@0: 		}
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: static const byte _breakdown_speeds[16] = {
truelight@0: 	225, 210, 195, 180, 165, 150, 135, 120, 105, 90, 75, 60, 45, 30, 15, 15
truelight@0: };
truelight@0: 
truelight@742: static bool TrainCheckIfLineEnds(Vehicle *v)
truelight@0: {
truelight@0: 	uint tile;
truelight@0: 	uint x,y;
truelight@0: 	int t;
truelight@0: 	uint32 ts;
truelight@0: 
truelight@0: 	if ((uint)(t=v->breakdown_ctr) > 1) {
truelight@0: 		v->vehstatus |= VS_TRAIN_SLOWING;
truelight@193: 
truelight@0: 		t = _breakdown_speeds[ ((~t) >> 4) & 0xF];
truelight@0: 		if ((uint16)t <= v->cur_speed)
truelight@0: 			v->cur_speed = t;
truelight@0: 	} else {
truelight@0: 		v->vehstatus &= ~VS_TRAIN_SLOWING;
truelight@0: 	}
truelight@0: 
truelight@0: 	// exit if inside a tunnel
truelight@0: 	if (v->u.rail.track & 0x40)
truelight@742: 		return true;
truelight@0: 
truelight@0: 	tile = v->tile;
truelight@0: 
truelight@0: 	// tunnel entrance?
tron@1035: 	if (IsTileType(tile, MP_TUNNELBRIDGE) &&
truelight@0: 			(_map5[tile] & 0xF0) == 0 && (byte)((_map5[tile] & 3)*2+1) == v->direction)
truelight@742: 				return true;
truelight@193: 
truelight@0: 	// depot?
truelight@742: 	/* XXX -- When enabled, this makes it possible to crash trains of others
truelight@742: 	     (by building a depot right against a station) */
tron@1035: /*	if (IsTileType(tile, MP_RAILWAY) && (_map5[tile] & 0xFC) == 0xC0)
truelight@742: 		return true;*/
truelight@0: 
darkvater@22: 	/* Determine the non-diagonal direction in which we will exit this tile */
truelight@0: 	t = v->direction >> 1;
truelight@0: 	if (!(v->direction & 1) && v->u.rail.track != _state_dir_table[t]) {
truelight@0: 		t = (t - 1) & 3;
truelight@0: 	}
darkvater@22: 	/* Calculate next tile */
tron@900: 	tile += TileOffsByDir(t);
darkvater@22: 	// determine the track status on the next tile.
bjarni@1151: 	ts = GetTileTrackStatus(tile, TRANSPORT_RAIL) & _reachable_tracks[t];
truelight@193: 
darkvater@22: 	/* Calc position within the current tile ?? */
truelight@0: 	x = v->x_pos & 0xF;
truelight@0: 	y = v->y_pos & 0xF;
truelight@193: 
truelight@0: 	switch(v->direction) {
truelight@0: 	case 0:
truelight@0: 		x = (~x) + (~y) + 24;
truelight@0: 		break;
truelight@0: 	case 7:
truelight@0: 		x = y;
truelight@0: 		/* fall through */
truelight@0: 	case 1:
truelight@0: 		x = (~x) + 16;
truelight@0: 		break;
truelight@0: 	case 2:
truelight@0: 		x = (~x) + y + 8;
truelight@0: 		break;
truelight@0: 	case 3:
truelight@0: 		x = y;
truelight@0: 		break;
truelight@0: 	case 4:
truelight@0: 		x = x + y - 8;
truelight@0: 		break;
truelight@0: 	case 6:
truelight@0: 		x = (~y) + x + 8;
truelight@0: 		break;
truelight@0: 	}
truelight@0: 
truelight@0: 	if ( (uint16)ts != 0) {
truelight@742: 		/* If we approach a rail-piece which we can't enter, don't enter it! */
truelight@742: 		if (x + 4 > 15 && !CheckCompatibleRail(v, tile)) {
truelight@742: 			v->cur_speed = 0;
truelight@742: 			ReverseTrainDirection(v);
truelight@742: 			return false;
truelight@742: 		}
truelight@0: 		if ((ts &= (ts >> 16)) == 0) {
truelight@0: 			// make a rail/road crossing red
tron@1035: 			if (IsTileType(tile, MP_STREET) && (_map5[tile] & 0xF0) == 0x10) {
truelight@0: 				if (!(_map5[tile] & 4)) {
truelight@0: 					_map5[tile] |= 4;
tron@541: 					SndPlayVehicleFx(SND_0E_LEVEL_CROSSING, v);
truelight@0: 					MarkTileDirtyByTile(tile);
truelight@0: 				}
truelight@0: 			}
truelight@742: 			return true;
truelight@0: 		}
truelight@0: 	} else if (x + 4 > 15) {
truelight@0: 		v->cur_speed = 0;
truelight@0: 		ReverseTrainDirection(v);
truelight@742: 		return false;
truelight@0: 	}
truelight@0: 
truelight@0: 	// slow down
truelight@0: 	v->vehstatus |= VS_TRAIN_SLOWING;
truelight@0: 	t = _breakdown_speeds[x & 0xF];
truelight@0: 	if (!(v->direction&1)) t>>=1;
truelight@0: 	if ((uint16)t < v->cur_speed)
truelight@0: 		v->cur_speed = t;
truelight@742: 
truelight@742: 	return true;
truelight@0: }
truelight@0: 
truelight@0: static void TrainLocoHandler(Vehicle *v, bool mode)
truelight@0: {
truelight@0: 	int j;
truelight@0: 
truelight@0: 	/* train has crashed? */
truelight@0: 	if (v->u.rail.crash_anim_pos != 0) {
truelight@0: 		if (!mode) HandleCrashedTrain(v);
truelight@0: 		return;
truelight@0: 	}
truelight@0: 
truelight@0: 	if (v->u.rail.force_proceed != 0)
truelight@0: 		v->u.rail.force_proceed--;
truelight@0: 
truelight@0: 	/* train is broken down? */
truelight@0: 	if (v->breakdown_ctr != 0) {
truelight@0: 		if (v->breakdown_ctr <= 2) {
truelight@0: 			HandleBrokenTrain(v);
truelight@0: 			return;
truelight@0: 		}
truelight@0: 		v->breakdown_ctr--;
truelight@0: 	}
truelight@0: 
truelight@954: 	if (HASBIT(v->u.rail.flags, VRF_REVERSING) && v->cur_speed == 0) {
truelight@0: 		ReverseTrainDirection(v);
truelight@0: 	}
truelight@0: 
truelight@0: 	/* exit if train is stopped */
truelight@0: 	if (v->vehstatus & VS_STOPPED && v->cur_speed == 0)
truelight@0: 		return;
truelight@0: 
truelight@0: 
truelight@0: 	if (ProcessTrainOrder(v)) {
truelight@0: 		v->load_unload_time_rem = 0;
truelight@0: 		v->cur_speed = 0;
truelight@0: 		v->subspeed = 0;
truelight@0: 		ReverseTrainDirection(v);
truelight@0: 		return;
truelight@0: 	}
truelight@0: 
truelight@0: 	HandleTrainLoading(v, mode);
truelight@0: 
tron@555: 	if (v->current_order.type == OT_LOADING)
truelight@0: 		return;
truelight@0: 
truelight@0: 	if (CheckTrainStayInDepot(v))
truelight@0: 		return;
truelight@0: 
truelight@0: 	if (!mode) HandleLocomotiveSmokeCloud(v);
truelight@0: 
truelight@0: 	j = UpdateTrainSpeed(v);
truelight@0: 	if (j == 0) {
truelight@0: 		// if the vehicle has speed 0, update the last_speed field.
truelight@0: 		if (v->cur_speed != 0)
truelight@0: 			return;
truelight@0: 	} else {
truelight@0: 		TrainCheckIfLineEnds(v);
truelight@0: 
truelight@0: 		do {
truelight@0: 			TrainController(v);
truelight@0: 			if (v->cur_speed <= 0x100)
truelight@0: 				break;
truelight@0: 		} while (--j != 0);
truelight@0: 	}
truelight@0: 
truelight@0: 	SetLastSpeed(v, v->cur_speed);
truelight@0: }
truelight@0: 
truelight@0: 
truelight@0: void Train_Tick(Vehicle *v)
truelight@0: {
truelight@0: 	if (_age_cargo_skip_counter == 0 && v->cargo_days != 0xff)
truelight@0: 		v->cargo_days++;
truelight@0: 
truelight@0: 	v->tick_counter++;
truelight@0: 
bjarni@1067: 	if (v->subtype == TS_Front_Engine) {
truelight@0: 		TrainLocoHandler(v, false);
truelight@193: 
truelight@0: 		// make sure vehicle wasn't deleted.
bjarni@1067: 		if (v->type == VEH_Train && v->subtype == TS_Front_Engine)
truelight@0: 			TrainLocoHandler(v, true);
darkvater@1132: 	} else if (v->subtype == TS_Free_Car && HASBITS(v->vehstatus, VS_CRASHED)) {
darkvater@1132: 		// Delete flooded standalone wagon
darkvater@1132: 		if (++v->u.rail.crash_anim_pos >= 4400)
darkvater@1132: 			DeleteVehicle(v);
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: 
truelight@0: static const byte _depot_track_ind[4] = {0,1,0,1};
truelight@0: 
dominik@715: // Validation for the news item "Train is waiting in depot"
tron@1095: static bool ValidateTrainInDepot( uint data_a, uint data_b )
dominik@715: {
truelight@919: 	Vehicle *v = GetVehicle(data_a);
celestar@1064: 	return  (v->u.rail.track == 0x80 && (v->vehstatus | VS_STOPPED));
dominik@715: }
dominik@715: 
truelight@0: void TrainEnterDepot(Vehicle *v, uint tile)
truelight@0: {
truelight@0: 	SetSignalsOnBothDir(tile, _depot_track_ind[_map5[tile]&3]);
truelight@0: 
bjarni@1067: 	if (v->subtype != TS_Front_Engine)
truelight@0: 		v = GetFirstVehicleInChain(v);
truelight@0: 
bjarni@578: 	VehicleServiceInDepot(v);
bjarni@578: 
truelight@0: 	InvalidateWindow(WC_VEHICLE_DETAILS, v->index);
truelight@0: 
truelight@0: 	v->load_unload_time_rem = 0;
truelight@0: 	v->cur_speed = 0;
truelight@0: 
bjarni@842: 	MaybeReplaceVehicle(v);
truelight@0: 
tron@445: 	TriggerVehicle(v, VEHICLE_TRIGGER_DEPOT);
tron@445: 
tron@555: 	if (v->current_order.type == OT_GOTO_DEPOT) {
tron@555: 		Order t;
tron@555: 
truelight@0: 		InvalidateWindow(WC_VEHICLE_VIEW, v->index);
truelight@193: 
tron@555: 		t = v->current_order;
tron@555: 		v->current_order.type = OT_DUMMY;
tron@555: 		v->current_order.flags = 0;
tron@555: 
truelight@1024: 		if (t.flags & OF_UNLOAD) { // Part of the orderlist?
tron@555: 			v->u.rail.days_since_order_progr = 0;
tron@555: 			v->cur_order_index++;
tron@555: 		} else if (t.flags & OF_FULL_LOAD) { // User initiated?
truelight@0: 			v->vehstatus |= VS_STOPPED;
truelight@0: 			if (v->owner == _local_player) {
tron@534: 				SetDParam(0, v->unitnumber);
dominik@715: 				AddValidatedNewsItem(
truelight@0: 					STR_8814_TRAIN_IS_WAITING_IN_DEPOT,
truelight@0: 					NEWS_FLAGS(NM_SMALL, NF_VIEWPORT|NF_VEHICLE, NT_ADVICE, 0),
truelight@0: 					v->index,
dominik@715: 					0,
dominik@715: 					ValidateTrainInDepot);
truelight@0: 			}
truelight@0: 		}
truelight@0: 	}
bjarni@1151: 	InvalidateWindowClasses(WC_TRAINS_LIST);
truelight@0: }
truelight@0: 
truelight@0: static void CheckIfTrainNeedsService(Vehicle *v)
truelight@0: {
truelight@1313: 	Depot *depot;
darkvater@308: 	TrainFindDepotData tfdd;
truelight@0: 
bjarni@1208: 	if (_patches.servint_trains == 0 && !v->set_for_replacement)
truelight@0: 		return;
truelight@0: 
bjarni@1208: 	if (!VehicleNeedsService(v) && !v->set_for_replacement)
truelight@0: 		return;
truelight@0: 
truelight@0: 	if (v->vehstatus & VS_STOPPED)
truelight@0: 		return;
truelight@0: 
truelight@1024: 	if (_patches.gotodepot && VehicleHasDepotOrders(v))
truelight@0: 		return;
truelight@193: 
truelight@0: 	// Don't interfere with a depot visit scheduled by the user, or a
truelight@0: 	// depot visit by the order list.
tron@555: 	if (v->current_order.type == OT_GOTO_DEPOT &&
tron@555: 			(v->current_order.flags & (OF_FULL_LOAD | OF_UNLOAD)) != 0)
truelight@0: 		return;
truelight@0: 
darkvater@308: 	tfdd = FindClosestTrainDepot(v);
darkvater@308: 	/* Only go to the depot if it is not too far out of our way. */
darkvater@308: 	if (tfdd.best_length == (uint)-1 || tfdd.best_length > 16 ) {
tron@555: 		if (v->current_order.type == OT_GOTO_DEPOT) {
darkvater@308: 			/* If we were already heading for a depot but it has
darkvater@308: 			 * suddenly moved farther away, we continue our normal
darkvater@308: 			 * schedule? */
tron@555: 			v->current_order.type = OT_DUMMY;
tron@555: 			v->current_order.flags = 0;
darkvater@755: 			InvalidateWindowWidget(WC_VEHICLE_VIEW, v->index, STATUS_BAR);
truelight@0: 		}
truelight@0: 		return;
truelight@0: 	}
truelight@0: 
darkvater@308: 	depot = GetDepotByTile(tfdd.tile);
truelight@0: 
tron@555: 	if (v->current_order.type == OT_GOTO_DEPOT &&
truelight@1313: 			v->current_order.station != depot->index &&
tron@555: 			!CHANCE16(3,16))
truelight@0: 		return;
truelight@0: 
tron@555: 	v->current_order.type = OT_GOTO_DEPOT;
tron@555: 	v->current_order.flags = OF_NON_STOP;
truelight@1313: 	v->current_order.station = depot->index;
darkvater@308: 	v->dest_tile = tfdd.tile;
darkvater@755: 	InvalidateWindowWidget(WC_VEHICLE_VIEW, v->index, STATUS_BAR);
truelight@0: }
truelight@0: 
truelight@0: int32 GetTrainRunningCost(Vehicle *v)
truelight@0: {
truelight@0: 	int32 cost = 0;
truelight@0: 
truelight@0: 	do {
tron@540: 		const RailVehicleInfo *rvi = RailVehInfo(v->engine_type);
truelight@0: 		if (rvi->running_cost_base)
truelight@0: 			cost += rvi->running_cost_base * _price.running_rail[rvi->engclass];
truelight@0: 	} while ( (v=v->next) != NULL );
truelight@0: 
truelight@0: 	return cost;
truelight@0: }
truelight@0: 
truelight@0: void OnNewDay_Train(Vehicle *v)
truelight@0: {
truelight@0: 	TileIndex tile;
truelight@0: 
truelight@0: 	if ((++v->day_counter & 7) == 0)
truelight@0: 		DecreaseVehicleValue(v);
truelight@0: 
bjarni@1067: 	if (v->subtype == TS_Front_Engine) {
truelight@0: 		CheckVehicleBreakdown(v);
truelight@0: 		AgeVehicle(v);
truelight@193: 
truelight@0: 		CheckIfTrainNeedsService(v);
truelight@193: 
truelight@0: 		// check if train hasn't advanced in its order list for a set number of days
Celestar@1057: 		if (_patches.lost_train_days && v->num_orders && !(v->vehstatus & (VS_STOPPED | VS_CRASHED) ) && ++v->u.rail.days_since_order_progr >= _patches.lost_train_days && v->owner == _local_player) {
truelight@0: 			v->u.rail.days_since_order_progr = 0;
tron@534: 			SetDParam(0, v->unitnumber);
truelight@0: 			AddNewsItem(
truelight@0: 				STR_TRAIN_IS_LOST,
truelight@0: 				NEWS_FLAGS(NM_SMALL, NF_VIEWPORT|NF_VEHICLE, NT_ADVICE, 0),
truelight@0: 				v->index,
truelight@0: 				0);
truelight@0: 		}
truelight@0: 
celestar@1053: 		CheckOrders(v->index, OC_INIT);
truelight@193: 
truelight@0: 		/* update destination */
tron@555: 		if (v->current_order.type == OT_GOTO_STATION &&
truelight@919: 				(tile = GetStation(v->current_order.station)->train_tile) != 0)
truelight@0: 					v->dest_tile = tile;
truelight@0: 
truelight@0: 		if ((v->vehstatus & VS_STOPPED) == 0) {
truelight@0: 			/* running costs */
truelight@0: 			int32 cost = GetTrainRunningCost(v) / 364;
truelight@0: 
truelight@0: 			v->profit_this_year -= cost >> 8;
truelight@0: 
truelight@0: 			SET_EXPENSES_TYPE(EXPENSES_TRAIN_RUN);
truelight@0: 			SubtractMoneyFromPlayerFract(v->owner, cost);
truelight@0: 
truelight@0: 			InvalidateWindow(WC_VEHICLE_DETAILS, v->index);
bjarni@1151: 			InvalidateWindowClasses(WC_TRAINS_LIST);
truelight@0: 		}
truelight@0: 	}
truelight@0: }
truelight@0: 
tron@1093: void TrainsYearlyLoop(void)
truelight@0: {
truelight@0: 	Vehicle *v;
truelight@0: 
truelight@0: 	FOR_ALL_VEHICLES(v) {
bjarni@1067: 		if (v->type == VEH_Train && v->subtype == TS_Front_Engine) {
truelight@193: 
truelight@0: 			// show warning if train is not generating enough income last 2 years (corresponds to a red icon in the vehicle list)
truelight@0: 			if (_patches.train_income_warn && v->owner == _local_player && v->age >= 730 && v->profit_this_year < 0) {
tron@534: 				SetDParam(1, v->profit_this_year);
tron@534: 				SetDParam(0, v->unitnumber);
truelight@0: 				AddNewsItem(
truelight@0: 					STR_TRAIN_IS_UNPROFITABLE,
truelight@0: 					NEWS_FLAGS(NM_SMALL, NF_VIEWPORT|NF_VEHICLE, NT_ADVICE, 0),
truelight@0: 					v->index,
truelight@0: 					0);
truelight@0: 			}
truelight@0: 
truelight@0: 			v->profit_last_year = v->profit_this_year;
truelight@0: 			v->profit_this_year = 0;
truelight@0: 			InvalidateWindow(WC_VEHICLE_DETAILS, v->index);
truelight@0: 		}
truelight@0: 	}
truelight@0: }
truelight@0: 
truelight@0: extern void ShowTrainViewWindow(Vehicle *v);
truelight@0: 
truelight@0: void HandleClickOnTrain(Vehicle *v)
truelight@0: {
bjarni@1067: 	if (v->subtype != TS_Front_Engine) v = GetFirstVehicleInChain(v);
truelight@0: 	ShowTrainViewWindow(v);
truelight@0: }
truelight@0: 
tron@1093: void InitializeTrains(void)
truelight@0: {
truelight@0: 	_age_cargo_skip_counter = 1;
truelight@0: }