vehicle_gui.c
author bjarni
Sat, 29 Jan 2005 10:10:10 +0000
changeset 1207 a2a433807a99
parent 1191 b680ace4455e
child 1246 45f15251412b
permissions -rw-r--r--
(svn r1711) - Add: [MacOSX] Added an Xcode project file (Tobin)

This project file adds a graphical IDE to OSX, including graphical debugging, which is a bit easier than gdb (Xcode uses gdb for debugging)
Since it uses the makefile to compile, it should (hopefully) work without updating the project file when the makefile is updated
Tobin did most of the work, but I altered paths and settings for custom executable so it should work out of the box for everybody
#include "stdafx.h"
#include "ttd.h"
#include "table/strings.h"
#include "vehicle.h"
#include "window.h"
#include "engine.h"
#include "gui.h"
#include "command.h"
#include "gfx.h"

VehicleSortListingTypeFunctions * const _vehicle_sorter[] = {
	&VehicleUnsortedSorter,
	&VehicleNumberSorter,
	&VehicleNameSorter,
	&VehicleAgeSorter,
	&VehicleProfitThisYearSorter,
	&VehicleProfitLastYearSorter,
	&VehicleCargoSorter,
	&VehicleReliabilitySorter,
	&VehicleMaxSpeedSorter
};

const StringID _vehicle_sort_listing[] = {
	STR_SORT_BY_UNSORTED,
	STR_SORT_BY_NUMBER,
	STR_SORT_BY_DROPDOWN_NAME,
	STR_SORT_BY_AGE,
	STR_SORT_BY_PROFIT_THIS_YEAR,
	STR_SORT_BY_PROFIT_LAST_YEAR,
	STR_SORT_BY_TOTAL_CAPACITY_PER_CARGOTYPE,
	STR_SORT_BY_RELIABILITY,
	STR_SORT_BY_MAX_SPEED,
	INVALID_STRING_ID
};

const StringID _rail_types_list[] = {
	STR_RAIL_VEHICLES,
	STR_MONORAIL_VEHICLES,
	STR_MAGLEV_VEHICLES,
	INVALID_STRING_ID
};

void RebuildVehicleLists(void)
{
	Window *w;

	for (w = _windows; w != _last_window; ++w)
		switch (w->window_class) {
		case WC_TRAINS_LIST: case WC_ROADVEH_LIST:
		case WC_SHIPS_LIST:  case WC_AIRCRAFT_LIST:
			WP(w, vehiclelist_d).flags |= VL_REBUILD;
			SetWindowDirty(w);
			break;
		default: break;
		}
}

void ResortVehicleLists(void)
{
	Window *w;

	for (w = _windows; w != _last_window; ++w)
		switch (w->window_class) {
		case WC_TRAINS_LIST: case WC_ROADVEH_LIST:
		case WC_SHIPS_LIST:  case WC_AIRCRAFT_LIST:
			WP(w, vehiclelist_d).flags |= VL_RESORT;
			SetWindowDirty(w);
			break;
		default: break;
		}
}

void BuildVehicleList(vehiclelist_d *vl, int type, int owner, int station)
{
	int subtype = (type != VEH_Aircraft) ? TS_Front_Engine : 2;
	int n = 0;
	int i;

	if (!(vl->flags & VL_REBUILD)) return;

	/* Create array for sorting */
	_vehicle_sort = realloc(_vehicle_sort, _vehicles_size * sizeof(_vehicle_sort[0]));
	if (_vehicle_sort == NULL)
		error("Could not allocate memory for the vehicle-sorting-list");

	DEBUG(misc, 1) ("Building vehicle list for player %d station %d...",
		owner, station);

	if (station != -1) {
		const Vehicle *v;
		FOR_ALL_VEHICLES(v) {
			if (v->type == type && v->subtype <= subtype) {
				const Order *order;

				FOR_VEHICLE_ORDERS(v, order) {
					if (order->type == OT_GOTO_STATION && order->station == station) {
						_vehicle_sort[n].index = v->index;
						_vehicle_sort[n].owner = v->owner;
						++n;
						break;
					}
				}
			}
		}
	} else {
		const Vehicle *v;
		FOR_ALL_VEHICLES(v) {
			if (v->type == type && v->subtype <= subtype && v->owner == owner) {
				_vehicle_sort[n].index = v->index;
				_vehicle_sort[n].owner = v->owner;
				++n;
			}
		}
	}

	vl->sort_list = realloc(vl->sort_list, n * sizeof(vl->sort_list[0]));
	if (n!=0 && vl->sort_list == NULL)
		error("Could not allocate memory for the vehicle-sorting-list");
	vl->list_length = n;

	for (i = 0; i < n; ++i)
		vl->sort_list[i] = _vehicle_sort[i];

	vl->flags &= ~VL_REBUILD;
	vl->flags |= VL_RESORT;
}

void SortVehicleList(vehiclelist_d *vl)
{
	if (!(vl->flags & VL_RESORT)) return;

	_internal_sort_order = vl->flags & VL_DESC;
	_internal_name_sorter_id = STR_SV_TRAIN_NAME;
	_last_vehicle_idx = 0; // used for "cache" in namesorting
	qsort(vl->sort_list, vl->list_length, sizeof(vl->sort_list[0]),
		_vehicle_sorter[vl->sort_type]);

	vl->resort_timer = DAY_TICKS * PERIODIC_RESORT_DAYS;
	vl->flags &= ~VL_RESORT;
}


/* General Vehicle GUI based procedures that are independent of vehicle types */
void InitializeVehiclesGuiList(void)
{
}

// draw the vehicle profit button in the vehicle list window.
void DrawVehicleProfitButton(Vehicle *v, int x, int y)
{
	uint32 ormod;

	// draw profit-based colored icons
	if(v->age <= 365 * 2)
		ormod = 0x3158000; // grey
	else if(v->profit_last_year < 0)
		ormod = 0x30b8000; //red
	else if(v->profit_last_year < 10000)
		ormod = 0x30a8000; // yellow
	else
		ormod = 0x30d8000; // green
	DrawSprite((SPR_BLOT) | ormod, x, y);
}

/************ Sorter functions *****************/
int CDECL GeneralOwnerSorter(const void *a, const void *b)
{
	return (*(const SortStruct*)a).owner - (*(const SortStruct*)b).owner;
}

/* Variables you need to set before calling this function!
* 1. (byte)_internal_sort_type:					sorting criteria to sort on
* 2. (bool)_internal_sort_order:				sorting order, descending/ascending
* 3. (uint32)_internal_name_sorter_id:	default StringID of the vehicle when no name is set. eg
*    STR_SV_TRAIN_NAME for trains or STR_SV_AIRCRAFT_NAME for aircraft
*/
int CDECL VehicleUnsortedSorter(const void *a, const void *b)
{
	return GetVehicle((*(const SortStruct*)a).index)->index - GetVehicle((*(const SortStruct*)b).index)->index;
}

// if the sorting criteria had the same value, sort vehicle by unitnumber
#define VEHICLEUNITNUMBERSORTER(r, a, b) {if (r == 0) {r = a->unitnumber - b->unitnumber;}}

int CDECL VehicleNumberSorter(const void *a, const void *b)
{
	const Vehicle *va = GetVehicle((*(const SortStruct*)a).index);
	const Vehicle *vb = GetVehicle((*(const SortStruct*)b).index);
	int r = va->unitnumber - vb->unitnumber;

	return (_internal_sort_order & 1) ? -r : r;
}

static char _bufcache[64];	// used together with _last_vehicle_idx to hopefully speed up stringsorting
int CDECL VehicleNameSorter(const void *a, const void *b)
{
	const SortStruct *cmp1 = (const SortStruct*)a;
	const SortStruct *cmp2 = (const SortStruct*)b;
	const Vehicle *va = GetVehicle(cmp1->index);
	const Vehicle *vb = GetVehicle(cmp2->index);
	char buf1[64] = "\0";
	int r;

	if (va->string_id != _internal_name_sorter_id) {
		SetDParam(0, va->string_id);
		GetString(buf1, STR_JUST_STRING);
	}

	if ( cmp2->index != _last_vehicle_idx) {
		_last_vehicle_idx = cmp2->index;
		_bufcache[0] = '\0';
		if (vb->string_id != _internal_name_sorter_id) {
			SetDParam(0, vb->string_id);
			GetString(_bufcache, STR_JUST_STRING);
		}
	}

	r =  strcmp(buf1, _bufcache);	// sort by name

	VEHICLEUNITNUMBERSORTER(r, va, vb);

	return (_internal_sort_order & 1) ? -r : r;
}

int CDECL VehicleAgeSorter(const void *a, const void *b)
{
	const Vehicle *va = GetVehicle((*(const SortStruct*)a).index);
	const Vehicle *vb = GetVehicle((*(const SortStruct*)b).index);
	int r = va->age - vb->age;

	VEHICLEUNITNUMBERSORTER(r, va, vb);

	return (_internal_sort_order & 1) ? -r : r;
}

int CDECL VehicleProfitThisYearSorter(const void *a, const void *b)
{
	const Vehicle *va = GetVehicle((*(const SortStruct*)a).index);
	const Vehicle *vb = GetVehicle((*(const SortStruct*)b).index);
	int r = va->profit_this_year - vb->profit_this_year;

	VEHICLEUNITNUMBERSORTER(r, va, vb);

	return (_internal_sort_order & 1) ? -r : r;
}

int CDECL VehicleProfitLastYearSorter(const void *a, const void *b)
{
	const Vehicle *va = GetVehicle((*(const SortStruct*)a).index);
	const Vehicle *vb = GetVehicle((*(const SortStruct*)b).index);
	int r = va->profit_last_year - vb->profit_last_year;

	VEHICLEUNITNUMBERSORTER(r, va, vb);

	return (_internal_sort_order & 1) ? -r : r;
}

int CDECL VehicleCargoSorter(const void *a, const void *b)
{
	const Vehicle *va = GetVehicle((*(const SortStruct*)a).index);
	const Vehicle *vb = GetVehicle((*(const SortStruct*)b).index);
	const Vehicle *v;
	int r = 0;
	int i;
	uint _cargo_counta[NUM_CARGO];
	uint _cargo_countb[NUM_CARGO];
	memset(_cargo_counta, 0, sizeof(_cargo_counta));
	memset(_cargo_countb, 0, sizeof(_cargo_countb));

	for (v = va; v != NULL; v = v->next)
		_cargo_counta[v->cargo_type] += v->cargo_cap;

	for (v = vb; v != NULL; v = v->next)
		_cargo_countb[v->cargo_type] += v->cargo_cap;

	for (i = 0; i < NUM_CARGO; i++) {
		r = _cargo_counta[i] - _cargo_countb[i];
		if (r != 0)
			break;
	}

	VEHICLEUNITNUMBERSORTER(r, va, vb);

	return (_internal_sort_order & 1) ? -r : r;
}

int CDECL VehicleReliabilitySorter(const void *a, const void *b)
{
	const Vehicle *va = GetVehicle((*(const SortStruct*)a).index);
	const Vehicle *vb = GetVehicle((*(const SortStruct*)b).index);
	int r = va->reliability - vb->reliability;

	VEHICLEUNITNUMBERSORTER(r, va, vb);

	return (_internal_sort_order & 1) ? -r : r;
}

int CDECL VehicleMaxSpeedSorter(const void *a, const void *b)
{
	const Vehicle *va = GetVehicle((*(const SortStruct*)a).index);
	const Vehicle *vb = GetVehicle((*(const SortStruct*)b).index);
	int max_speed_a = 0xFFFF, max_speed_b = 0xFFFF;
	int r;
	const Vehicle *ua = va, *ub = vb;

	if (va->type == VEH_Train && vb->type == VEH_Train) {
		do {
			if (RailVehInfo(ua->engine_type)->max_speed != 0)
				max_speed_a = min(max_speed_a, RailVehInfo(ua->engine_type)->max_speed);
		} while ((ua = ua->next) != NULL);

		do {
			if (RailVehInfo(ub->engine_type)->max_speed != 0)
				max_speed_b = min(max_speed_b, RailVehInfo(ub->engine_type)->max_speed);
		} while ((ub = ub->next) != NULL);

		r = max_speed_a - max_speed_b;
	} else {
		r = va->max_speed - vb->max_speed;
	}

	VEHICLEUNITNUMBERSORTER(r, va, vb);

	return (_internal_sort_order & 1) ? -r : r;
}

// this define is to match engine.c, but engine.c keeps it to itself
// ENGINE_AVAILABLE is used in ReplaceVehicleWndProc
#define ENGINE_AVAILABLE ((e->flags & 1 && HASBIT(info->railtype_climates, _opt.landscape)) || HASBIT(e->player_avail, _local_player))

/*  if show_outdated is selected, it do not sort psudo engines properly but it draws all engines
 *	if used compined with show_cars set to false, it will work as intended. Replace window do it like that
 *  this was a big hack even before show_outdated was added. Stupid newgrf :p										*/
static void train_engine_drawing_loop(int *x, int *y, int *pos, int *sel, int *selected_id, byte railtype,
	uint8 lines_drawn, bool is_engine, bool show_cars, bool show_outdated)
{
	int i;
	byte colour;

	for (i = 0; i < NUM_TRAIN_ENGINES; i++) {
		const Engine *e = DEREF_ENGINE(i);
		const RailVehicleInfo *rvi = RailVehInfo(i);
		const EngineInfo *info = &_engine_info[i];

		if ( _player_num_engines[i] == 0 && show_outdated ) continue;

		if ( rvi->power == 0 && !(show_cars) )   // disables display of cars (works since they do not have power)
			continue;

		if (*sel == 0) *selected_id = i;


		colour = *sel == 0 ? 0xC : 0x10;
		if (!(ENGINE_AVAILABLE && show_outdated && RailVehInfo(i)->power && e->railtype == railtype)) {
			if (e->railtype != railtype || !(rvi->flags & RVI_WAGON) != is_engine ||
				!HASBIT(e->player_avail, _local_player))
				continue;
		} /*else {
		// TODO find a nice red colour for vehicles being replaced
			if ( _autoreplace_array[i] != i )
				colour = *sel == 0 ? 0x44 : 0x45;
		} */

		if (IS_INT_INSIDE(--*pos, -lines_drawn, 0)) {
			DrawString(*x + 59, *y + 2, GetCustomEngineName(i),
				colour);
			DrawTrainEngine(*x + 29, *y + 6, i,
				SPRITE_PALETTE(PLAYER_SPRITE_COLOR(_local_player)));
			if ( show_outdated ) {
				SetDParam(0, _player_num_engines[i]);
				DrawStringRightAligned(213, *y+5, STR_TINY_BLACK, 0);
			}
			*y += 14;
		}
		--*sel;
	}
}


static void SetupScrollStuffForReplaceWindow(Window *w)
{
	byte railtype;
	int selected_id[2] = {-1,-1};
	int sel[2];
	int count = 0;
	int count2 = 0;
	int engine_id;

	sel[0] = WP(w,replaceveh_d).sel_index[0];
	sel[1] = WP(w,replaceveh_d).sel_index[1];

	switch (WP(w,replaceveh_d).vehicletype) {
		case VEH_Train: {
			railtype = _railtype_selected_in_replace_gui;
			w->widget[13].color = _player_colors[_local_player];	// sets the colour of that art thing
			w->widget[16].color = _player_colors[_local_player];	// sets the colour of that art thing
			for (engine_id = 0; engine_id < NUM_TRAIN_ENGINES; engine_id++) {
				const Engine *e = DEREF_ENGINE(engine_id);
				const EngineInfo *info = &_engine_info[engine_id];

				if (ENGINE_AVAILABLE && RailVehInfo(engine_id)->power && e->railtype == railtype ) {
					if ( _player_num_engines[engine_id] ) {
						if (sel[0]==0)  selected_id[0] = engine_id;
						count++;
						sel[0]--;
					}
					if (HASBIT(e->player_avail, _local_player)) {
						if (sel[1]==0)  selected_id[1] = engine_id;
						count2++;
						sel[1]--;
					}
				}
			}
			break;
		}
		case VEH_Road: {
			int num = NUM_ROAD_ENGINES;
			Engine *e = DEREF_ENGINE(ROAD_ENGINES_INDEX);
			byte cargo;
			EngineInfo *info;
			engine_id = ROAD_ENGINES_INDEX;

			do {
				info = &_engine_info[engine_id];
				if (_player_num_engines[engine_id] ) {
					if (sel[0]==0)  selected_id[0] = engine_id;
					count++;
					sel[0]--;
				}
			} while (++engine_id,++e,--num);

			if ( selected_id[0] != -1 ) {   // only draw right array if we have anything in the left one
				num = NUM_ROAD_ENGINES;
				engine_id = ROAD_ENGINES_INDEX;
				e = DEREF_ENGINE(ROAD_ENGINES_INDEX);
				cargo = RoadVehInfo(selected_id[0])->cargo_type;

				do {
					if ( cargo == RoadVehInfo(engine_id)->cargo_type && HASBIT(e->player_avail, _local_player)) {
						count2++;
						if (sel[1]==0)  selected_id[1] = engine_id;
						sel[1]--;
					}
				} while (++engine_id,++e,--num);
			}
			break;
		}

		case VEH_Ship: {
			int num = NUM_SHIP_ENGINES;
			Engine *e = DEREF_ENGINE(SHIP_ENGINES_INDEX);
			byte cargo, refittable;
			EngineInfo *info;
			engine_id = SHIP_ENGINES_INDEX;

			do {
				info = &_engine_info[engine_id];
				if (_player_num_engines[engine_id] ) {
					if ( sel[0] == 0 )  selected_id[0] = engine_id;
					count++;
					sel[0]--;
				}
			} while (++engine_id,++e,--num);

			if ( selected_id[0] != -1 ) {
				num = NUM_SHIP_ENGINES;
				e = DEREF_ENGINE(SHIP_ENGINES_INDEX);
				engine_id = SHIP_ENGINES_INDEX;
				cargo = ShipVehInfo(selected_id[0])->cargo_type;
				refittable = ShipVehInfo(selected_id[0])->refittable;

				do {
					if (HASBIT(e->player_avail, _local_player)
					&& ( cargo == ShipVehInfo(engine_id)->cargo_type || refittable & ShipVehInfo(engine_id)->refittable)) {

						if ( sel[1]==0)  selected_id[1] = engine_id;
						sel[1]--;
						count2++;
					}
				} while (++engine_id,++e,--num);
			}
			break;
		}   //end of ship

		case VEH_Aircraft:{
			int num = NUM_AIRCRAFT_ENGINES;
			byte subtype;
			Engine *e = DEREF_ENGINE(AIRCRAFT_ENGINES_INDEX);
			EngineInfo *info;
			engine_id = AIRCRAFT_ENGINES_INDEX;

			do {
				info = &_engine_info[engine_id];
				if (_player_num_engines[engine_id]) {
					count++;
					if (sel[0]==0)  selected_id[0] = engine_id;
					sel[0]--;
				}
			} while (++engine_id,++e,--num);

			if ( selected_id[0] != -1 ) {
				num = NUM_AIRCRAFT_ENGINES;
				e = DEREF_ENGINE(AIRCRAFT_ENGINES_INDEX);
				subtype = AircraftVehInfo(selected_id[0])->subtype;
				engine_id = AIRCRAFT_ENGINES_INDEX;
				do {
					if (HASBIT(e->player_avail, _local_player)) {
						if (HASBIT(subtype, 0) == HASBIT(AircraftVehInfo(engine_id)->subtype, 0)) {
							count2++;
							if (sel[1]==0)  selected_id[1] = engine_id;
							sel[1]--;
						}
					}
				} while (++engine_id,++e,--num);
			}
			break;
		}
	}
	// sets up the number of items in each list
	SetVScrollCount(w, count);
	SetVScroll2Count(w, count2);
	WP(w,replaceveh_d).sel_engine[0] = selected_id[0];
	WP(w,replaceveh_d).sel_engine[1] = selected_id[1];

	WP(w,replaceveh_d).count[0] = count;
	WP(w,replaceveh_d).count[1] = count2;
	return;
}


static void DrawEngineArrayInReplaceWindow(Window *w, int x, int y, int x2, int y2, int pos, int pos2,
	int sel1, int sel2, int selected_id1, int selected_id2)
{
	int sel[2];
	int selected_id[2];

	sel[0] = sel1;
	sel[1] = sel2;

	selected_id[0] = selected_id1;
	selected_id[1] = selected_id2;

	switch (WP(w,replaceveh_d).vehicletype) {
		case VEH_Train: {
			byte railtype = _railtype_selected_in_replace_gui;
			DrawString(157, 89 + (14 * w->vscroll.cap), _rail_types_list[railtype], 0x10);
			/* draw sorting criteria string */

			/* Ensure that custom engines which substituted wagons
			* are sorted correctly.
			* XXX - DO NOT EVER DO THIS EVER AGAIN! GRRR hacking in wagons as
			* engines to get more types.. Stays here until we have our own format
			* then it is exit!!! */
			train_engine_drawing_loop(&x, &y, &pos, &sel[0], &selected_id[0], railtype, w->vscroll.cap, true, false, true); // True engines
			train_engine_drawing_loop(&x2, &y2, &pos2, &sel[1], &selected_id[1], railtype, w->vscroll.cap, true, false, false); // True engines
			train_engine_drawing_loop(&x2, &y2, &pos2, &sel[1], &selected_id[1], railtype, w->vscroll.cap, false, false, false); // Feeble wagons
			break;
		}

		case VEH_Road: {
			int num = NUM_ROAD_ENGINES;
			Engine *e = DEREF_ENGINE(ROAD_ENGINES_INDEX);
			int engine_id = ROAD_ENGINES_INDEX;
			byte cargo;
			EngineInfo *info;

			if ( selected_id[0] >= ROAD_ENGINES_INDEX && selected_id[0] <= SHIP_ENGINES_INDEX ) {
				cargo = RoadVehInfo(selected_id[0])->cargo_type;

				do {
					info = &_engine_info[engine_id];
					if (_player_num_engines[engine_id]) {
						if (IS_INT_INSIDE(--pos, -w->vscroll.cap, 0)) {
							DrawString(x+59, y+2, GetCustomEngineName(engine_id), sel[0]==0 ? 0xC : 0x10);
							DrawRoadVehEngine(x+29, y+6, engine_id, SPRITE_PALETTE(PLAYER_SPRITE_COLOR(_local_player)));
							SetDParam(0, _player_num_engines[engine_id]);
							DrawStringRightAligned(213, y+5, STR_TINY_BLACK, 0);
							y += 14;
						}
					sel[0]--;
					}

					if ( RoadVehInfo(engine_id)->cargo_type == cargo && HASBIT(e->player_avail, _local_player) ) {
						if (IS_INT_INSIDE(--pos2, -w->vscroll.cap, 0) && RoadVehInfo(engine_id)->cargo_type == cargo) {
							DrawString(x2+59, y2+2, GetCustomEngineName(engine_id), sel[1]==0 ? 0xC : 0x10);
							DrawRoadVehEngine(x2+29, y2+6, engine_id, SPRITE_PALETTE(PLAYER_SPRITE_COLOR(_local_player)));
							y2 += 14;
						}
						sel[1]--;
					}
				} while (++engine_id, ++e,--num);
			}
			break;
		}

		case VEH_Ship: {
			int num = NUM_SHIP_ENGINES;
			Engine *e = DEREF_ENGINE(SHIP_ENGINES_INDEX);
			int engine_id = SHIP_ENGINES_INDEX;
			byte cargo, refittable;
			EngineInfo *info;

			if ( selected_id[0] != -1 ) {
				cargo = ShipVehInfo(selected_id[0])->cargo_type;
				refittable = ShipVehInfo(selected_id[0])->refittable;

				do {
					info = &_engine_info[engine_id];
					if (_player_num_engines[engine_id]) {
						if (IS_INT_INSIDE(--pos, -w->vscroll.cap, 0)) {
							DrawString(x+75, y+7, GetCustomEngineName(engine_id), sel[0]==0 ? 0xC : 0x10);
							DrawShipEngine(x+35, y+10, engine_id, SPRITE_PALETTE(PLAYER_SPRITE_COLOR(_local_player)));
							SetDParam(0, _player_num_engines[engine_id]);
							DrawStringRightAligned(213, y+15, STR_TINY_BLACK, 0);
							y += 24;
						}
						sel[0]--;
					}
					if ( selected_id[0] != -1 ) {
						if (HASBIT(e->player_avail, _local_player) && ( cargo == ShipVehInfo(engine_id)->cargo_type || refittable & ShipVehInfo(engine_id)->refittable)) {
							if (IS_INT_INSIDE(--pos2, -w->vscroll.cap, 0)) {
								DrawString(x2+75, y2+7, GetCustomEngineName(engine_id), sel[1]==0 ? 0xC : 0x10);
								DrawShipEngine(x2+35, y2+10, engine_id, SPRITE_PALETTE(PLAYER_SPRITE_COLOR(_local_player)));
								y2 += 24;
							}
							sel[1]--;
						}
					}
				} while (++engine_id, ++e,--num);
			}
			break;
		}   //end of ship

		case VEH_Aircraft: {
			if ( selected_id[0] != -1 ) {
				int num = NUM_AIRCRAFT_ENGINES;
				Engine *e = DEREF_ENGINE(AIRCRAFT_ENGINES_INDEX);
				int engine_id = AIRCRAFT_ENGINES_INDEX;
				byte subtype = AircraftVehInfo(selected_id[0])->subtype;
				EngineInfo *info;

				do {
					info = &_engine_info[engine_id];
					if (_player_num_engines[engine_id]) {
						if (sel[0]==0) selected_id[0] = engine_id;
						if (IS_INT_INSIDE(--pos, -w->vscroll.cap, 0)) {
							DrawString(x+62, y+7, GetCustomEngineName(engine_id), sel[0]==0 ? 0xC : 0x10);
							DrawAircraftEngine(x+29, y+10, engine_id, SPRITE_PALETTE(PLAYER_SPRITE_COLOR(_local_player)));
							SetDParam(0, _player_num_engines[engine_id]);
							DrawStringRightAligned(213, y+15, STR_TINY_BLACK, 0);
							y += 24;
						}
						sel[0]--;
					}
					if ( (HASBIT(subtype, 0) == HASBIT(AircraftVehInfo(engine_id)->subtype, 0))
						&& HASBIT(e->player_avail, _local_player) ) {
						if (sel[1]==0) selected_id[1] = engine_id;
						if (IS_INT_INSIDE(--pos2, -w->vscroll.cap, 0)) {
							DrawString(x2+62, y2+7, GetCustomEngineName(engine_id), sel[1]==0 ? 0xC : 0x10);
							DrawAircraftEngine(x2+29, y2+10, engine_id, SPRITE_PALETTE(PLAYER_SPRITE_COLOR(_local_player)));
							y2 += 24;
						}
						sel[1]--;
					}
				} while (++engine_id, ++e,--num);
			}
			break;
		}   // end of aircraft
	}

}
static void ReplaceVehicleWndProc(Window *w, WindowEvent *e)
{
	// these 3 variables is used if any of the lists is clicked
	uint16 click_scroll_pos = w->vscroll2.pos;
	uint16 click_scroll_cap = w->vscroll2.cap;
	byte click_side = 1;

	switch(e->event) {
		case WE_PAINT:
			{
				int pos = w->vscroll.pos;
				int selected_id[2] = {-1,-1};
				int x = 1;
				int y = 15;
				int pos2 = w->vscroll2.pos;
				int x2 = 1 + 228;
				int y2 = 15;
				int sel[2];
				sel[0] = WP(w,replaceveh_d).sel_index[0];
				sel[1] = WP(w,replaceveh_d).sel_index[1];

				{
					uint i;
					const Vehicle *vehicle;

					for (i = 0; i < lengthof(_player_num_engines); i++) {
						_player_num_engines[i] = 0;
					}
					FOR_ALL_VEHICLES(vehicle) {
						if ( vehicle->owner == _local_player ) {
							if (vehicle->type == VEH_Aircraft && vehicle->subtype > 2) continue;

							// do not count the vehicles, that contains only 0 in all var
							if (vehicle->engine_type == 0 && vehicle->spritenum == 0 ) continue;

							if (vehicle->type != DEREF_ENGINE(vehicle->engine_type)->type) continue;

							_player_num_engines[vehicle->engine_type]++;
						}
					}
				}

				SetupScrollStuffForReplaceWindow(w);

				selected_id[0] = WP(w,replaceveh_d).sel_engine[0];
				selected_id[1] = WP(w,replaceveh_d).sel_engine[1];

			// sets the selected left item to the top one if it's greater than the number of vehicles in the left side

				if ( WP(w,replaceveh_d).count[0] <= sel[0] ) {
					if (WP(w,replaceveh_d).count[0]) {
						sel[0] = 0;
						WP(w,replaceveh_d).sel_index[0] = 0;
						w->vscroll.pos = 0;
						// now we go back to set selected_id[1] properly
						SetWindowDirty(w);
						return;
					} else { //there are no vehicles in the left window
						selected_id[1] = -1;
					}
				}

				if ( WP(w,replaceveh_d).count[1] <= sel[1] ) {
					if (WP(w,replaceveh_d).count[1]) {
						sel[1] = 0;
						WP(w,replaceveh_d).sel_index[1] = 0;
						w->vscroll2.pos = 0;
						// now we go back to set selected_id[1] properly
						SetWindowDirty(w);
						return;
					} else { //there are no vehicles in the right window
						selected_id[1] = -1;
					}
				}

				if ( selected_id[0] == selected_id[1] || _autoreplace_array[selected_id[0]] == selected_id[1]
					|| selected_id[0] == -1 || selected_id[1] == -1 )
					SETBIT(w->disabled_state, 4);
				else
					CLRBIT(w->disabled_state, 4);

				if ( _autoreplace_array[selected_id[0]] == selected_id[0] || selected_id[0] == -1 )
					SETBIT(w->disabled_state, 6);
				else
					CLRBIT(w->disabled_state, 6);

				// now the actual drawing of the window itself takes place
				DrawWindowWidgets(w);



				// sets up the string for the vehicle that is being replaced to
				if ( selected_id[0] != -1 ) {
					if ( selected_id[0] == _autoreplace_array[selected_id[0]] )
						SetDParam(0, STR_NOT_REPLACING);
					else
						SetDParam(0, GetCustomEngineName(_autoreplace_array[selected_id[0]]));
				} else {
					SetDParam(0, STR_NOT_REPLACING_VEHICLE_SELECTED);
				}


				DrawString(145, (w->resize.step_height == 24 ? 67 : 77 ) + ( w->resize.step_height * w->vscroll.cap), STR_02BD, 0x10);


				/*	now we draw the two arrays according to what we just counted */
				DrawEngineArrayInReplaceWindow(w, x, y, x2, y2, pos, pos2, sel[0], sel[1], selected_id[0], selected_id[1]);

				WP(w,replaceveh_d).sel_engine[0] = selected_id[0];
				WP(w,replaceveh_d).sel_engine[1] = selected_id[1];
				/* now we draw the info about the vehicles we selected */
				switch (WP(w,replaceveh_d).vehicletype) {
					case VEH_Train: {
						byte i = 0;
						int offset = 0;

						for ( i = 0 ; i < 2 ; i++) {
							if ( i )
							offset = 228;
							if (selected_id[i] != -1) {
								if (!(RailVehInfo(selected_id[i])->flags & RVI_WAGON)) {
									/* it's an engine */
									Set_DPARAM_Train_Engine_Build_Window(selected_id[i]);
									DrawString(2 + offset, 15 + (14 * w->vscroll.cap), STR_8817_COST_WEIGHT_T_SPEED_POWER, 0);
								} else {
									/* it's a wagon. Train cars are not replaced with the current GUI, but this code is ready for newgrf if anybody adds that*/
									Set_DPARAM_Train_Car_Build_Window(w, selected_id[i]);
									DrawString(2 + offset, 15 + (14 * w->vscroll.cap), STR_8821_COST_WEIGHT_T_T_CAPACITY, 0);
								}
							}
						}
						break;
					}   //end if case  VEH_Train

					case VEH_Road: {
						if (selected_id[0] != -1) {
							Set_DPARAM_Road_Veh_Build_Window(selected_id[0]);
							DrawString(2, 15 + (14 * w->vscroll.cap), STR_9008_COST_SPEED_RUNNING_COST, 0);
							if (selected_id[1] != -1) {
								Set_DPARAM_Road_Veh_Build_Window(selected_id[1]);
								DrawString(2 + 228, 15 + (14 * w->vscroll.cap), STR_9008_COST_SPEED_RUNNING_COST, 0);
							}
						}
						break;
					}   // end of VEH_Road

					case VEH_Ship: {
						if (selected_id[0] != -1) {
							Set_DPARAM_Ship_Build_Window(selected_id[0]);
							DrawString(2, 15 + (24 * w->vscroll.cap), STR_980A_COST_SPEED_CAPACITY_RUNNING, 0);
							if (selected_id[1] != -1) {
								Set_DPARAM_Ship_Build_Window(selected_id[1]);
								DrawString(2 + 228, 15 + (24 * w->vscroll.cap), STR_980A_COST_SPEED_CAPACITY_RUNNING, 0);
							}
						}
						break;
					}   // end of VEH_Ship

					case VEH_Aircraft: {
						if (selected_id[0] != -1) {
							Set_DPARAM_Aircraft_Build_Window(selected_id[0]);
							DrawString(2, 15 + (24 * w->vscroll.cap), STR_A007_COST_SPEED_CAPACITY_PASSENGERS, 0);
							if (selected_id[1] != -1) {
								Set_DPARAM_Aircraft_Build_Window(selected_id[1]);
								DrawString(2 + 228, 15 + (24 * w->vscroll.cap), STR_A007_COST_SPEED_CAPACITY_PASSENGERS, 0);
							}
						}
						break;
					}   // end of VEH_Aircraft
				}
			}   // end of paint

		case WE_CLICK: {
			switch(e->click.widget) {
				case 14: case 15:/* Select sorting criteria dropdown menu */
				// finds mask for available engines
				{
					int engine_avail = 0;
					if ( !(HASBIT(DEREF_ENGINE(NUM_NORMAL_RAIL_ENGINES + NUM_MONORAIL_ENGINES)->player_avail, _local_player))) {
						engine_avail = 4;
						if ( !(HASBIT(DEREF_ENGINE(NUM_NORMAL_RAIL_ENGINES)->player_avail, _local_player)))
							engine_avail = 6;
					}
					ShowDropDownMenu(w, _rail_types_list, _railtype_selected_in_replace_gui, 15, engine_avail, 1);
					break;
				}
				case 4: {
					_autoreplace_array[WP(w,replaceveh_d).sel_engine[0]] = WP(w,replaceveh_d).sel_engine[1];
					SetWindowDirty(w);
					break;
				}

				case 6: {
					_autoreplace_array[WP(w,replaceveh_d).sel_engine[0]] = WP(w,replaceveh_d).sel_engine[0];
					SetWindowDirty(w);
					break;
				}

				case 7:
					// sets up that the left one was clicked. The default values are for the right one (9)
					// this way, the code for 9 handles both sides
					click_scroll_pos = w->vscroll.pos;
					click_scroll_cap = w->vscroll.cap;
					click_side = 0;
				case 9: {
					uint i = (e->click.pt.y - 14) / w->resize.step_height;
					if (i < click_scroll_cap) {
						WP(w,replaceveh_d).sel_index[click_side] = i + click_scroll_pos;
						SetWindowDirty(w);
					}
				} break;
			}

		} break;

		case WE_DROPDOWN_SELECT: { /* we have selected a dropdown item in the list */
			_railtype_selected_in_replace_gui = e->dropdown.index;
			SetWindowDirty(w);
		} break;

		case WE_RESIZE: {
			w->vscroll.cap  += e->sizing.diff.y / (int)w->resize.step_height;
			w->vscroll2.cap += e->sizing.diff.y / (int)w->resize.step_height;

			w->widget[7].unkA = (w->vscroll.cap  << 8) + 1;
			w->widget[9].unkA = (w->vscroll2.cap << 8) + 1;
		} break;
	}
}

static const Widget _replace_rail_vehicle_widgets[] = {
{   WWT_CLOSEBOX,   RESIZE_NONE,    14,     0,    10,     0,    13, STR_00C5,	STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,   RESIZE_NONE,    14,    11,   443,     0,    13, STR_REPLACE_VEHICLES_WHITE, STR_018C_WINDOW_TITLE_DRAG_THIS},
{  WWT_STICKYBOX,   RESIZE_NONE,    14,   444,   455,     0,    13, 0x0,						STR_STICKY_BUTTON},
{      WWT_PANEL,     RESIZE_TB,    14,     0,   227,   126,   187, 0x0,						STR_NULL},
{ WWT_PUSHTXTBTN,     RESIZE_TB,    14,     0,   138,   200,   211, STR_REPLACE_VEHICLES_START,STR_REPLACE_HELP_START_BUTTON},
{      WWT_PANEL,     RESIZE_TB,    14,   139,   316,   188,   199, 0x0,						STR_REPLACE_HELP_REPLACE_INFO_TAB},
{ WWT_PUSHTXTBTN,     RESIZE_TB,    14,   306,   443,   200,   211, STR_REPLACE_VEHICLES_STOP,	STR_REPLACE_HELP_STOP_BUTTON},
{     WWT_MATRIX, RESIZE_BOTTOM,    14,     0,   215,    14,   125, 0x801,						STR_REPLACE_HELP_LEFT_ARRAY},
{  WWT_SCROLLBAR, RESIZE_BOTTOM,    14,   216,   227,    14,   125, 0x0,						STR_0190_SCROLL_BAR_SCROLLS_LIST},
{     WWT_MATRIX, RESIZE_BOTTOM,    14,   228,   443,    14,   125, 0x801,						STR_REPLACE_HELP_RIGHT_ARRAY},
{ WWT_SCROLL2BAR, RESIZE_BOTTOM,    14,   444,   455,    14,   125, 0x0,						STR_0190_SCROLL_BAR_SCROLLS_LIST},
{      WWT_PANEL,     RESIZE_TB,    14,   228,   455,   126,   187, 0x0,						STR_NULL},
// train specific stuff
{      WWT_PANEL,     RESIZE_TB,    14,     0,   138,   188,   199, 0x0,						STR_NULL},
{      WWT_PANEL,     RESIZE_TB,	  14,   139,   153,   200,   211, 0x0,						STR_NULL},
{      WWT_PANEL,     RESIZE_TB,    14,   154,   289,   200,   211, 0x0,						STR_REPLACE_HELP_RAILTYPE},
{   WWT_CLOSEBOX,     RESIZE_TB,    14,   279,   287,   201,   210, STR_0225,					STR_REPLACE_HELP_RAILTYPE},
{      WWT_PANEL,     RESIZE_TB,	  14,   290,   305,   200,   211, 0x0,						STR_NULL},
{      WWT_PANEL,     RESIZE_TB,    14,   317,   455,   188,   199, 0x0,						STR_NULL},
// end of train specific stuff
{  WWT_RESIZEBOX,     RESIZE_TB,    14,   444,   455,   200,   211, 0x0,						STR_RESIZE_BUTTON},
{   WIDGETS_END},
};

static const Widget _replace_road_vehicle_widgets[] = {
{   WWT_CLOSEBOX,   RESIZE_NONE,    14,     0,    10,     0,    13, STR_00C5,					STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,   RESIZE_NONE,    14,    11,   443,     0,    13, STR_REPLACE_VEHICLES_WHITE, STR_018C_WINDOW_TITLE_DRAG_THIS},
{  WWT_STICKYBOX,   RESIZE_NONE,    14,   444,   455,     0,    13, 0x0,						STR_STICKY_BUTTON},
{      WWT_PANEL,     RESIZE_TB,    14,     0,   227,   126,   187, 0x0,						STR_NULL},
{ WWT_PUSHTXTBTN,     RESIZE_TB,    14,     0,   138,   188,   199, STR_REPLACE_VEHICLES_START,	STR_REPLACE_HELP_START_BUTTON},
{      WWT_PANEL,     RESIZE_TB,    14,   139,   305,   188,   199, 0x0,						STR_REPLACE_HELP_REPLACE_INFO_TAB},
{ WWT_PUSHTXTBTN,     RESIZE_TB,    14,   306,   443,   188,   199, STR_REPLACE_VEHICLES_STOP,	STR_REPLACE_HELP_STOP_BUTTON},
{     WWT_MATRIX, RESIZE_BOTTOM,    14,     0,   215,    14,   125, 0x801,						STR_REPLACE_HELP_LEFT_ARRAY},
{  WWT_SCROLLBAR, RESIZE_BOTTOM,    14,   216,   227,    14,   125, 0x0,						STR_0190_SCROLL_BAR_SCROLLS_LIST},
{     WWT_MATRIX, RESIZE_BOTTOM,    14,   228,   443,    14,   125, 0x801,						STR_REPLACE_HELP_RIGHT_ARRAY},
{ WWT_SCROLL2BAR, RESIZE_BOTTOM,    14,   444,   455,    14,   125, 0x0,						STR_0190_SCROLL_BAR_SCROLLS_LIST},
{      WWT_PANEL,     RESIZE_TB,    14,   228,   455,   126,   187, 0x0,						STR_NULL},
{  WWT_RESIZEBOX,     RESIZE_TB,    14,   444,   455,   188,   199, 0x0,						STR_RESIZE_BUTTON},
{   WIDGETS_END},
};

static const Widget _replace_ship_aircraft_vehicle_widgets[] = {
{   WWT_CLOSEBOX,   RESIZE_NONE,    14,     0,    10,     0,    13, STR_00C5,					STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,   RESIZE_NONE,    14,    11,   443,     0,    13, STR_REPLACE_VEHICLES_WHITE, STR_018C_WINDOW_TITLE_DRAG_THIS},
{  WWT_STICKYBOX,   RESIZE_NONE,    14,   444,   455,     0,    13, 0x0,						STR_STICKY_BUTTON},
{      WWT_PANEL,     RESIZE_TB,    14,     0,   227,   110,   161, 0x0,						STR_NULL},
{ WWT_PUSHTXTBTN,     RESIZE_TB,    14,     0,   138,   162,   173, STR_REPLACE_VEHICLES_START,	STR_REPLACE_HELP_START_BUTTON},
{      WWT_PANEL,     RESIZE_TB,    14,   139,   305,   162,   173, 0x0,						STR_REPLACE_HELP_REPLACE_INFO_TAB},
{ WWT_PUSHTXTBTN,     RESIZE_TB,    14,   306,   443,   162,   173, STR_REPLACE_VEHICLES_STOP,	STR_REPLACE_HELP_STOP_BUTTON},
{     WWT_MATRIX, RESIZE_BOTTOM,    14,     0,   215,    14,   109, 0x401,						STR_REPLACE_HELP_LEFT_ARRAY},
{  WWT_SCROLLBAR, RESIZE_BOTTOM,    14,   216,   227,    14,   109, 0x0,						STR_0190_SCROLL_BAR_SCROLLS_LIST},
{     WWT_MATRIX, RESIZE_BOTTOM,    14,   228,   443,    14,   109, 0x401,						STR_REPLACE_HELP_RIGHT_ARRAY},
{ WWT_SCROLL2BAR, RESIZE_BOTTOM,    14,   444,   455,    14,   109, 0x0,						STR_0190_SCROLL_BAR_SCROLLS_LIST},
{      WWT_PANEL,     RESIZE_TB,    14,   228,   455,   110,   161, 0x0,						STR_NULL},
{  WWT_RESIZEBOX,     RESIZE_TB,    14,   444,   455,   162,   173, 0x0,						STR_RESIZE_BUTTON},
{   WIDGETS_END},
};

static const WindowDesc _replace_rail_vehicle_desc = {
	-1, -1, 456, 212,
	WC_REPLACE_VEHICLE,0,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS | WDF_STICKY_BUTTON | WDF_RESIZABLE,
	_replace_rail_vehicle_widgets,
	ReplaceVehicleWndProc
};

static const WindowDesc _replace_road_vehicle_desc = {
	-1, -1, 456, 200,
	WC_REPLACE_VEHICLE,0,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS | WDF_STICKY_BUTTON | WDF_RESIZABLE,
	_replace_road_vehicle_widgets,
	ReplaceVehicleWndProc
};

static const WindowDesc _replace_ship_aircraft_vehicle_desc = {
	-1, -1, 456, 174,
	WC_REPLACE_VEHICLE,0,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS | WDF_STICKY_BUTTON | WDF_RESIZABLE,
	_replace_ship_aircraft_vehicle_widgets,
	ReplaceVehicleWndProc
};


void ShowReplaceVehicleWindow(byte vehicletype)
{
	Window *w;

	DeleteWindowById(WC_REPLACE_VEHICLE, vehicletype );

	switch (vehicletype) {
		case VEH_Train:
			w = AllocateWindowDescFront(&_replace_rail_vehicle_desc, vehicletype);
			w->vscroll.cap  = 8;
			w->resize.step_height = 14;
			break;
		case VEH_Road:
			w = AllocateWindowDescFront(&_replace_road_vehicle_desc, vehicletype);
			w->vscroll.cap  = 8;
			w->resize.step_height = 14;
			break;
		case VEH_Ship: case VEH_Aircraft:
			w = AllocateWindowDescFront(&_replace_ship_aircraft_vehicle_desc, vehicletype);
			w->vscroll.cap  = 4;
			w->resize.step_height = 24;
			break;
		default: return;
	}
	w->caption_color = _local_player;
	WP(w,replaceveh_d).vehicletype = vehicletype;
	w->vscroll2.cap = w->vscroll.cap;   // these two are always the same
}