/* $Id: train_gui.c 4342 2006-04-10 07:15:58Z tron $ */

#include "stdafx.h"
#include "openttd.h"
#include "debug.h"
#include "functions.h"
#include "table/sprites.h"
#include "table/strings.h"
#include "map.h"
#include "window.h"
#include "gui.h"
#include "gfx.h"
#include "vehicle.h"
#include "viewport.h"
#include "station.h"
#include "command.h"
#include "player.h"
#include "engine.h"
#include "vehicle_gui.h"
#include "depot.h"
#include "train.h"
#include "newgrf_engine.h"

int _traininfo_vehicle_pitch = 0;

/**
 * Draw the purchase info details of train engine at a given location.
 * @param x,y location where to draw the info
 * @param engine_number the engine of which to draw the info of
 */
void DrawTrainEnginePurchaseInfo(int x, int y, EngineID engine_number)
{
	const RailVehicleInfo *rvi = RailVehInfo(engine_number);
	const Engine* e = GetEngine(engine_number);
	int multihead = (rvi->flags&RVI_MULTIHEAD?1:0);
	YearMonthDay ymd;
	ConvertDayToYMD(&ymd, e->intro_date);

	/* Purchase Cost - Engine weight */
	SetDParam(0, rvi->base_cost * (_price.build_railvehicle >> 3) >> 5);
	SetDParam(1, rvi->weight << multihead);
	DrawString(x,y, STR_PURCHASE_INFO_COST_WEIGHT, 0);
	y += 10;

	/* Max speed - Engine power */
	SetDParam(0, rvi->max_speed);
	SetDParam(1, rvi->power << multihead);
	DrawString(x,y, STR_PURCHASE_INFO_SPEED_POWER, 0);
	y += 10;

	/* Running cost */
	SetDParam(0, (rvi->running_cost_base * _price.running_rail[rvi->running_cost_class] >> 8) << multihead);
	DrawString(x,y, STR_PURCHASE_INFO_RUNNINGCOST, 0);
	y += 10;

	/* Powered wagons power - Powered wagons extra weight */
	if (rvi->pow_wag_power != 0) {
		SetDParam(0, rvi->pow_wag_power);
		SetDParam(1, rvi->pow_wag_weight);
		DrawString(x,y, STR_PURCHASE_INFO_PWAGPOWER_PWAGWEIGHT, 0);
		y += 10;
	};

	/* Cargo type + capacity, or N/A */
	SetDParam(0, STR_8838_N_A);
	SetDParam(2, STR_EMPTY);
	if (rvi->capacity != 0) {
		SetDParam(0, _cargoc.names_long[rvi->cargo_type]);
		SetDParam(1, rvi->capacity << multihead);
		SetDParam(2, STR_9842_REFITTABLE);
	}
	DrawString(x,y, STR_PURCHASE_INFO_CAPACITY, 0);
	y += 10;

	/* Design date - Life length */
	SetDParam(0, ymd.year + 1920);
	SetDParam(1, e->lifelength);
	DrawString(x,y, STR_PURCHASE_INFO_DESIGNED_LIFE, 0);
	y += 10;

	/* Reliability */
	SetDParam(0, e->reliability * 100 >> 16);
	DrawString(x,y, STR_PURCHASE_INFO_RELIABILITY, 0);
	y += 10;
}

/**
 * Draw the purchase info details of a train wagon at a given location.
 * @param x,y location where to draw the info
 * @param engine_number the engine of which to draw the info of
 */
void DrawTrainWagonPurchaseInfo(int x, int y, EngineID engine_number)
{
	const RailVehicleInfo *rvi = RailVehInfo(engine_number);
	bool refittable = (EngInfo(engine_number)->refit_mask != 0);

	/* Purchase cost */
	SetDParam(0, (rvi->base_cost * _price.build_railwagon) >> 8);
	DrawString(x, y, STR_PURCHASE_INFO_COST, 0);
	y += 10;

	/* Wagon weight - (including cargo) */
	SetDParam(0, rvi->weight);
	SetDParam(1, (_cargoc.weights[rvi->cargo_type] * rvi->capacity >> 4) + rvi->weight);
	DrawString(x, y, STR_PURCHASE_INFO_WEIGHT_CWEIGHT, 0);
	y += 10;

	/* Cargo type + capacity */
	SetDParam(0, _cargoc.names_long[rvi->cargo_type]);
	SetDParam(1, rvi->capacity);
	SetDParam(2, refittable ? STR_9842_REFITTABLE : STR_EMPTY);
	DrawString(x, y, STR_PURCHASE_INFO_CAPACITY, 0);
	y += 10;

	/* Wagon speed limit, displayed if above zero */
	if (rvi->max_speed > 0 && _patches.wagon_speed_limits) {
		SetDParam(0, rvi->max_speed);
		DrawString(x,y, STR_PURCHASE_INFO_SPEED, 0);
		y += 10;
	}
}

void CcBuildWagon(bool success, TileIndex tile, uint32 p1, uint32 p2)
{
	Vehicle *v,*found;

	if (!success)
		return;

	// find a locomotive in the depot.
	found = NULL;
	FOR_ALL_VEHICLES(v) {
		if (v->type == VEH_Train && IsFrontEngine(v) &&
				v->tile == tile &&
				v->u.rail.track == 0x80) {
			if (found != NULL) // must be exactly one.
				return;
			found = v;
		}
	}

	// if we found a loco,
	if (found != NULL) {
		found = GetLastVehicleInChain(found);
		// put the new wagon at the end of the loco.
		DoCommandP(0, _new_wagon_id | (found->index<<16), 0, NULL, CMD_MOVE_RAIL_VEHICLE);
		RebuildVehicleLists();
	}
}

void CcBuildLoco(bool success, TileIndex tile, uint32 p1, uint32 p2)
{
	const Vehicle* v;

	if (!success) return;

	v = GetVehicle(_new_train_id);
	if (tile == _backup_orders_tile) {
		_backup_orders_tile = 0;
		RestoreVehicleOrders(v, _backup_orders_data);
	}
	ShowTrainViewWindow(v);
}

void CcCloneTrain(bool success, uint tile, uint32 p1, uint32 p2)
{
	if (success) ShowTrainViewWindow(GetVehicle(_new_train_id));
}

static void engine_drawing_loop(int *x, int *y, int *pos, int *sel,
	EngineID* selected_id, RailType railtype, byte show_max, bool is_engine)
{
	EngineID j;

	for (j = 0; j < NUM_TRAIN_ENGINES; j++) {
		EngineID i = GetRailVehAtPosition(j);
		const Engine *e = GetEngine(i);
		const RailVehicleInfo *rvi = RailVehInfo(i);

		if (!HasPowerOnRail(e->railtype, railtype) || !(rvi->flags & RVI_WAGON) != is_engine ||
				!HASBIT(e->player_avail, _local_player))
			continue;

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

		if (IS_INT_INSIDE(--*pos, -show_max, 0)) {
			DrawString(*x + 59, *y + 2, GetCustomEngineName(i), *sel == 0 ? 0xC : 0x10);
			DrawTrainEngine(*x + 29, *y + 6, i, GetEnginePalette(i, _local_player));
			*y += 14;
		}
		--*sel;
	}
}

static void NewRailVehicleWndProc(Window *w, WindowEvent *e)
{
	switch (e->event) {
	case WE_PAINT:

		if (w->window_number == 0)
			SETBIT(w->disabled_state, 5);

		{
			int count = 0;
			RailType railtype = WP(w,buildtrain_d).railtype;
			EngineID i;

			for (i = 0; i < NUM_TRAIN_ENGINES; i++) {
				const Engine *e = GetEngine(i);
				if (HasPowerOnRail(e->railtype, railtype)
				    && HASBIT(e->player_avail, _local_player))
					count++;
			}
			SetVScrollCount(w, count);
		}

		SetDParam(0, WP(w,buildtrain_d).railtype + STR_881C_NEW_RAIL_VEHICLES);
		DrawWindowWidgets(w);

		{
			RailType railtype = WP(w,buildtrain_d).railtype;
			int sel = WP(w,buildtrain_d).sel_index;
			int pos = w->vscroll.pos;
			int x = 1;
			int y = 15;
			EngineID selected_id = INVALID_ENGINE;

			/* 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!!! */
			engine_drawing_loop(&x, &y, &pos, &sel, &selected_id, railtype, w->vscroll.cap, true); // True engines
			engine_drawing_loop(&x, &y, &pos, &sel, &selected_id, railtype, w->vscroll.cap, false); // Feeble wagons

			WP(w,buildtrain_d).sel_engine = selected_id;

			if (selected_id != INVALID_ENGINE) {
				const RailVehicleInfo *rvi = RailVehInfo(selected_id);

				if (!(rvi->flags & RVI_WAGON)) {
					/* it's an engine */
					DrawTrainEnginePurchaseInfo(2, w->widget[4].top + 1,selected_id);
				} else {
					/* it's a wagon */
					DrawTrainWagonPurchaseInfo(2, w->widget[4].top + 1, selected_id);
				}
			}
		}
	break;

	case WE_CLICK: {
		switch (e->click.widget) {
		case 2: {
			uint i = (e->click.pt.y - 14) / 14;
			if (i < w->vscroll.cap) {
				WP(w,buildtrain_d).sel_index = i + w->vscroll.pos;
				SetWindowDirty(w);
			}
		} break;
		case 5: {
			EngineID sel_eng = WP(w,buildtrain_d).sel_engine;
			if (sel_eng != INVALID_ENGINE)
				DoCommandP(w->window_number, sel_eng, 0, (RailVehInfo(sel_eng)->flags & RVI_WAGON) ? CcBuildWagon : CcBuildLoco, CMD_BUILD_RAIL_VEHICLE | CMD_MSG(STR_882B_CAN_T_BUILD_RAILROAD_VEHICLE));
		}	break;
		case 6: { /* rename */
			EngineID sel_eng = WP(w,buildtrain_d).sel_engine;
			if (sel_eng != INVALID_ENGINE) {
				WP(w,buildtrain_d).rename_engine = sel_eng;
				ShowQueryString(GetCustomEngineName(sel_eng),
					STR_886A_RENAME_TRAIN_VEHICLE_TYPE, 31, 160, w->window_class, w->window_number);
			}
		} break;
		}
	} break;

	case WE_4:
		if (w->window_number != 0 && !FindWindowById(WC_VEHICLE_DEPOT, w->window_number)) {
			DeleteWindow(w);
		}
		break;

	case WE_ON_EDIT_TEXT: {
		if (e->edittext.str[0] != '\0') {
			_cmd_text = e->edittext.str;
			DoCommandP(0, WP(w,buildtrain_d).rename_engine, 0, NULL,
				CMD_RENAME_ENGINE | CMD_MSG(STR_886B_CAN_T_RENAME_TRAIN_VEHICLE));
		}
	} break;

	case WE_RESIZE: {
		if (e->sizing.diff.y == 0)
			break;

		w->vscroll.cap += e->sizing.diff.y / 14;
		w->widget[2].unkA = (w->vscroll.cap << 8) + 1;
	} break;
	}
}

static const Widget _new_rail_vehicle_widgets[] = {
{   WWT_CLOSEBOX,   RESIZE_NONE,    14,     0,    10,     0,    13, STR_00C5,									STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,   RESIZE_NONE,    14,    11,   227,     0,    13, STR_JUST_STRING,					STR_018C_WINDOW_TITLE_DRAG_THIS},
{     WWT_MATRIX, RESIZE_BOTTOM,    14,     0,   215,    14,   125, 0x801,										STR_8843_TRAIN_VEHICLE_SELECTION},
{  WWT_SCROLLBAR, RESIZE_BOTTOM,    14,   216,   227,    14,   125, 0x0,											STR_0190_SCROLL_BAR_SCROLLS_LIST},
{      WWT_PANEL,     RESIZE_TB,    14,     0,   227,   126,   197, 0x0,											STR_NULL},
{ WWT_PUSHTXTBTN,     RESIZE_TB,    14,     0,   107,   198,   209, STR_881F_BUILD_VEHICLE,		STR_8844_BUILD_THE_HIGHLIGHTED_TRAIN},
{ WWT_PUSHTXTBTN,     RESIZE_TB,    14,   108,   215,   198,   209, STR_8820_RENAME,					STR_8845_RENAME_TRAIN_VEHICLE_TYPE},
{  WWT_RESIZEBOX,     RESIZE_TB,    14,   216,   227,   198,   209, 0x0,											STR_RESIZE_BUTTON},
{   WIDGETS_END},
};

static const WindowDesc _new_rail_vehicle_desc = {
	WDP_AUTO, -1, 228, 210,
	WC_BUILD_VEHICLE,0,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS | WDF_RESIZABLE,
	_new_rail_vehicle_widgets,
	NewRailVehicleWndProc
};

static void ShowBuildTrainWindow(TileIndex tile)
{
	Window *w;

	DeleteWindowById(WC_BUILD_VEHICLE, tile);

	w = AllocateWindowDesc(&_new_rail_vehicle_desc);
	w->window_number = tile;
	w->vscroll.cap = 8;
	w->widget[2].unkA = (w->vscroll.cap << 8) + 1;

	w->resize.step_height = 14;
	w->resize.height = w->height - 14 * 4; /* Minimum of 4 vehicles in the display */

	if (tile != 0) {
		w->caption_color = GetTileOwner(tile);
		WP(w,buildtrain_d).railtype = GetRailType(tile);
	} else {
		w->caption_color = _local_player;
		WP(w,buildtrain_d).railtype = GetBestRailtype(GetPlayer(_local_player));
	}
}

/**
 * Get the number of pixels for the given wagon length.
 * @param len Length measured in 1/8ths of a standard wagon.
 * @return Number of pixels across.
 */
static int WagonLengthToPixels(int len) {
	return (len * 29) / 8;
}

static void DrawTrainImage(const Vehicle *v, int x, int y, int count, int skip, VehicleID selection)
{
	int dx = 0;
	count *= 8;

	do {
		if (--skip < 0) {
			int width = v->u.rail.cached_veh_length;

			if (dx + width <= count) {
				PalSpriteID pal = (v->vehstatus & VS_CRASHED) ? PALETTE_CRASH : GetVehiclePalette(v);
				DrawSprite(GetTrainImage(v, DIR_W) | pal, x + 14 + WagonLengthToPixels(dx), y + 6 + (is_custom_sprite(RailVehInfo(v->engine_type)->image_index) ? _traininfo_vehicle_pitch : 0));
				if (v->index == selection)
					DrawFrameRect(x - 1 + WagonLengthToPixels(dx), y - 1, x + WagonLengthToPixels(dx + width) - 1, y + 12, 15, FR_BORDERONLY);
			}
			dx += width;
		}

		v = v->next;
	} while (dx < count && v != NULL);
}

static void DrawTrainDepotWindow(Window *w)
{
	TileIndex tile;
	Vehicle *v, *u;
	int num,x,y,i, hnum;
	Depot *depot;

	tile = w->window_number;

	/* setup disabled buttons */
	w->disabled_state =
		IsTileOwner(tile, _local_player) ? 0 : ((1 << 4) | (1 << 5) | (1 << 8) | (1<<9));

	/* determine amount of items for scroller */
	num = 0;
	hnum = 8;
	FOR_ALL_VEHICLES(v) {
		if (v->type == VEH_Train &&
			  (IsFrontEngine(v) || IsFreeWagon(v)) &&
				v->tile == tile &&
				v->u.rail.track == 0x80) {
			num++;
			// determine number of items in the X direction.
			if (IsFrontEngine(v)) {
				hnum = max(hnum, v->u.rail.cached_total_length);
			}
		}
	}

	/* Always have 1 empty row, so people can change the setting of the train */
	num++;

	SetVScrollCount(w, num);
	SetHScrollCount(w, (hnum + 7) / 8);

	/* locate the depot struct */
	depot = GetDepotByTile(tile);
	assert(depot != NULL);

	SetDParam(0, depot->town_index);
	DrawWindowWidgets(w);

	x = 2;
	y = 15;
	num = w->vscroll.pos;

	// draw all trains
	FOR_ALL_VEHICLES(v) {
		if (v->type == VEH_Train && IsFrontEngine(v) &&
				v->tile == tile && v->u.rail.track == 0x80 &&
				--num < 0 && num >= -w->vscroll.cap) {
			DrawTrainImage(v, x+21, y, w->hscroll.cap, w->hscroll.pos, WP(w,traindepot_d).sel);
			/* Draw the train number */
			SetDParam(0, v->unitnumber);
			DrawString(x, y, (v->max_age - 366 < v->age) ? STR_00E3 : STR_00E2, 0);

			// Number of wagons relative to a standard length wagon (rounded up)
			SetDParam(0, (v->u.rail.cached_total_length + 7) / 8);
			DrawStringRightAligned(w->widget[6].right - 1, y + 4, STR_TINY_BLACK, 0);	//Draw the counter

			/* Draw the pretty flag */
			DrawSprite(v->vehstatus & VS_STOPPED ? SPR_FLAG_VEH_STOPPED : SPR_FLAG_VEH_RUNNING, x + 15, y);

			y += 14;
		}
	}

	// draw all remaining vehicles
	FOR_ALL_VEHICLES(v) {
		if (v->type == VEH_Train && IsFreeWagon(v) &&
				v->tile == tile && v->u.rail.track == 0x80 &&
				--num < 0 && num >= -w->vscroll.cap) {
			DrawTrainImage(v, x+50, y, w->hscroll.cap - 1, 0, WP(w,traindepot_d).sel);
			DrawString(x, y+2, STR_8816, 0);

			/*Draw the train counter */
			i = 0;
			u = v;
			do i++; while ( (u=u->next) != NULL);		//Determine length of train
			SetDParam(0, i);				//Set the counter
			DrawStringRightAligned(w->widget[6].right - 1, y + 4, STR_TINY_BLACK, 0);	//Draw the counter
			y += 14;
		}
	}
}

typedef struct GetDepotVehiclePtData {
	Vehicle *head;
	Vehicle *wagon;
} GetDepotVehiclePtData;

static int GetVehicleFromTrainDepotWndPt(const Window *w, int x, int y, GetDepotVehiclePtData *d)
{
	int row;
	int skip = 0;
	Vehicle *v;

	x = x - 23;

	row = (y - 14) / 14;
	if ((uint)row >= w->vscroll.cap) return 1; /* means err */

	row += w->vscroll.pos;

	/* go through all the locomotives */
	FOR_ALL_VEHICLES(v) {
		if (v->type == VEH_Train &&
				IsFrontEngine(v) &&
				v->tile == w->window_number &&
				v->u.rail.track == 0x80 &&
				--row < 0) {
			skip = w->hscroll.pos;
			goto found_it;
		}
	}

	x -= 29; /* free wagons don't have an initial loco. */

	/* and then the list of free wagons */
	FOR_ALL_VEHICLES(v) {
		if (v->type == VEH_Train &&
				IsFreeWagon(v) &&
				v->tile == w->window_number &&
				v->u.rail.track == 0x80 &&
				--row < 0) {
			goto found_it;
		}
	}

	d->head = NULL;
	d->wagon = NULL;

	/* didn't find anything, get out */
	return 0;

found_it:
	d->head = d->wagon = v;

	/* either pressed the flag or the number, but only when it's a loco */
	if (x < 0 && IsFrontEngine(v)) return (x >= -10) ? -2 : -1;

	// skip vehicles that are scrolled off the left side
	while (v != NULL && skip--) v = v->next;

	/* find the vehicle in this row that was clicked */
	while (v != NULL && (x -= WagonLengthToPixels(v->u.rail.cached_veh_length)) >= 0) v = v->next;

	// if an articulated part was selected, find its parent
	while (v != NULL && IsArticulatedPart(v)) v = GetPrevVehicleInChain(v);

	d->wagon = v;

	return 0;
}

static void TrainDepotMoveVehicle(Vehicle *wagon, VehicleID sel, Vehicle *head)
{
	Vehicle *v;

	v = GetVehicle(sel);

	if (v == wagon)
		return;

	if (wagon == NULL) {
		if (head != NULL)
			wagon = GetLastVehicleInChain(head);
	} else  {
		wagon = GetPrevVehicleInChain(wagon);
		if (wagon == NULL)
			return;
	}

	if (wagon == v)
		return;

	DoCommandP(v->tile, v->index + ((wagon == NULL ? INVALID_VEHICLE : wagon->index) << 16), _ctrl_pressed ? 1 : 0, NULL, CMD_MOVE_RAIL_VEHICLE | CMD_MSG(STR_8837_CAN_T_MOVE_VEHICLE));
}

static void TrainDepotClickTrain(Window *w, int x, int y)
{
	GetDepotVehiclePtData gdvp;
	int mode;
	Vehicle *v;

	mode = GetVehicleFromTrainDepotWndPt(w, x, y, &gdvp);

	// share / copy orders
	if (_thd.place_mode && mode <= 0) { _place_clicked_vehicle = gdvp.head; return; }

	v = gdvp.wagon;

	switch (mode) {
	case 0: { // start dragging of vehicle
		VehicleID sel = WP(w, traindepot_d).sel;

		if (sel != INVALID_VEHICLE) {
			WP(w,traindepot_d).sel = INVALID_VEHICLE;
			TrainDepotMoveVehicle(v, sel, gdvp.head);
		} else if (v != NULL) {
			WP(w,traindepot_d).sel = v->index;
			SetObjectToPlaceWnd(GetVehiclePalette(v) | GetTrainImage(v, DIR_W), 4, w);
			SetWindowDirty(w);
		}
		break;
	}

	case -1: // show info window
		ShowTrainViewWindow(v);
		break;

	case -2: // click start/stop flag
		DoCommandP(v->tile, v->index, 0, NULL, CMD_START_STOP_TRAIN | CMD_MSG(STR_883B_CAN_T_STOP_START_TRAIN));
		break;
	}
}

/**
 * Clones a train
 * @param *v is the original vehicle to clone
 * @param *w is the window of the depot where the clone is build
 */
static void HandleCloneVehClick(const Vehicle* v, const Window* w)
{
	if (v == NULL || v->type != VEH_Train) return;

	// for train vehicles: subtype 0 for locs and not zero for others
	if (!IsFrontEngine(v)) {
		v = GetFirstVehicleInChain(v);
		// Do nothing when clicking on a train in depot with no loc attached
		if (!IsFrontEngine(v)) return;
	}

	DoCommandP(w->window_number, v->index, _ctrl_pressed ? 1 : 0, CcCloneTrain,
		CMD_CLONE_VEHICLE | CMD_MSG(STR_882B_CAN_T_BUILD_RAILROAD_VEHICLE)
	);

	ResetObjectToPlace();
}

static void ClonePlaceObj(const Window* w)
{
	Vehicle* v = CheckMouseOverVehicle();

	if (v != NULL) HandleCloneVehClick(v, w);
}

static void TrainDepotWndProc(Window *w, WindowEvent *e)
{
	switch (e->event) {
	case WE_PAINT:
		DrawTrainDepotWindow(w);
		break;

	case WE_CLICK: {
		switch (e->click.widget) {
		case 8:
			ResetObjectToPlace();
			ShowBuildTrainWindow(w->window_number);
			break;
		case 10:
			ResetObjectToPlace();
			ScrollMainWindowToTile(w->window_number);
			break;
		case 6:
			TrainDepotClickTrain(w, e->click.pt.x, e->click.pt.y);
			break;
		case 9: /* clone button */
			InvalidateWidget(w, 9);
			TOGGLEBIT(w->click_state, 9);

			if (HASBIT(w->click_state, 9)) {
				_place_clicked_vehicle = NULL;
				SetObjectToPlaceWnd(SPR_CURSOR_CLONE, VHM_RECT, w);
			} else {
				ResetObjectToPlace();
			}
			break;

 		}
 	} break;

	case WE_PLACE_OBJ: {
		ClonePlaceObj(w);
	} break;

	case WE_ABORT_PLACE_OBJ: {
		CLRBIT(w->click_state, 9);
		InvalidateWidget(w, 9);
	} break;

	// check if a vehicle in a depot was clicked..
	case WE_MOUSELOOP: {
		const Vehicle* v = _place_clicked_vehicle;

		// since OTTD checks all open depot windows, we will make sure that it triggers the one with a clicked clone button
		if (v != NULL && HASBIT(w->click_state, 9)) {
			_place_clicked_vehicle = NULL;
			HandleCloneVehClick(v, w);
		}
	} break;


	case WE_DESTROY:
		DeleteWindowById(WC_BUILD_VEHICLE, w->window_number);
		break;

	case WE_DRAGDROP: {
		switch (e->click.widget) {
		case 4: case 5: {
			Vehicle *v;
			int sell_cmd;

			/* sell vehicle */
			if (w->disabled_state & (1 << e->click.widget))
				return;

			if (WP(w,traindepot_d).sel == INVALID_VEHICLE)
				return;

			v = GetVehicle(WP(w,traindepot_d).sel);

			WP(w,traindepot_d).sel = INVALID_VEHICLE;
			SetWindowDirty(w);

			HandleButtonClick(w, e->click.widget);

			sell_cmd = (e->click.widget == 5 || _ctrl_pressed) ? 1 : 0;

			if (!IsFrontEngine(v)) {
				DoCommandP(v->tile, v->index, sell_cmd, NULL, CMD_SELL_RAIL_WAGON | CMD_MSG(STR_8839_CAN_T_SELL_RAILROAD_VEHICLE));
			} else {
				_backup_orders_tile = v->tile;
				BackupVehicleOrders(v, _backup_orders_data);
				if (!DoCommandP(v->tile, v->index, sell_cmd, NULL, CMD_SELL_RAIL_WAGON | CMD_MSG(STR_8839_CAN_T_SELL_RAILROAD_VEHICLE)))
					_backup_orders_tile = 0;
			}
		}	break;

		case 6: {
				GetDepotVehiclePtData gdvp;
				VehicleID sel = WP(w,traindepot_d).sel;

				WP(w,traindepot_d).sel = INVALID_VEHICLE;
				SetWindowDirty(w);

				if (GetVehicleFromTrainDepotWndPt(w, e->dragdrop.pt.x, e->dragdrop.pt.y, &gdvp) == 0 &&
						sel != INVALID_VEHICLE) {
					if (gdvp.wagon != NULL && gdvp.wagon->index == sel && _ctrl_pressed) {
						DoCommandP(GetVehicle(sel)->tile, GetVehicle(sel)->index, true, NULL, CMD_REVERSE_TRAIN_DIRECTION | CMD_MSG(STR_9033_CAN_T_MAKE_VEHICLE_TURN));
					} else if (gdvp.wagon == NULL || gdvp.wagon->index != sel) {
						TrainDepotMoveVehicle(gdvp.wagon, sel, gdvp.head);
					} else if (gdvp.head != NULL && IsFrontEngine(gdvp.head)) {
						ShowTrainViewWindow(gdvp.head);
					}
				}
			} break;

		default:
			WP(w,traindepot_d).sel = INVALID_VEHICLE;
			SetWindowDirty(w);
			break;
		}
		} break;
	case WE_RESIZE: {
		/* Update the scroll + matrix */
		w->vscroll.cap += e->sizing.diff.y / 14;
		w->hscroll.cap += e->sizing.diff.x / 29;
		w->widget[6].unkA = (w->vscroll.cap << 8) + 1;
	} break;
	}
}

static const Widget _train_depot_widgets[] = {
{   WWT_CLOSEBOX,   RESIZE_NONE,    14,     0,    10,     0,    13, STR_00C5,								STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,  RESIZE_RIGHT,    14,    11,   348,     0,    13, STR_8800_TRAIN_DEPOT,		STR_018C_WINDOW_TITLE_DRAG_THIS},
{  WWT_STICKYBOX,     RESIZE_LR,    14,   349,   360,     0,    13, 0x0,										STR_STICKY_BUTTON},

{      WWT_PANEL,    RESIZE_LRB,    14,   326,   348,    14,    13, 0x0,										STR_NULL},
{      WWT_PANEL,   RESIZE_LRTB,    14,   326,   348,    14,    54, 0x2A9,									STR_8841_DRAG_TRAIN_VEHICLE_TO_HERE},
{      WWT_PANEL,   RESIZE_LRTB,    14,   326,   348,    55,   109, 0x2BF,									STR_DRAG_WHOLE_TRAIN_TO_SELL_TIP},

{     WWT_MATRIX,     RESIZE_RB,    14,     0,   325,    14,    97, 0x601,									STR_883F_TRAINS_CLICK_ON_TRAIN_FOR},
{  WWT_SCROLLBAR,    RESIZE_LRB,    14,   349,   360,    14,   109, 0x0,										STR_0190_SCROLL_BAR_SCROLLS_LIST},
{ WWT_PUSHTXTBTN,     RESIZE_TB,    14,     0,   116,   110,   121, STR_8815_NEW_VEHICLES,	STR_8840_BUILD_NEW_TRAIN_VEHICLE},
{WWT_NODISTXTBTN,     RESIZE_TB,    14,   117,   232,   110,   121, STR_CLONE_TRAIN,		STR_CLONE_TRAIN_DEPOT_INFO},
{ WWT_PUSHTXTBTN,     RESIZE_TB,    14,   233,   348,   110,   121, STR_00E4_LOCATION,			STR_8842_CENTER_MAIN_VIEW_ON_TRAIN},


{ WWT_HSCROLLBAR,    RESIZE_RTB,    14,     0,   325,    98,   109, 0x0,										STR_HSCROLL_BAR_SCROLLS_LIST},
{      WWT_PANEL,    RESIZE_RTB,    14,   349,   348,   110,   121, 0x0,										STR_NULL},

{  WWT_RESIZEBOX,   RESIZE_LRTB,    14,   349,   360,   110,   121, 0x0,										STR_RESIZE_BUTTON},
{   WIDGETS_END},
};

static const WindowDesc _train_depot_desc = {
	WDP_AUTO, -1, 361, 122,
	WC_VEHICLE_DEPOT,0,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS | WDF_STICKY_BUTTON | WDF_RESIZABLE,
	_train_depot_widgets,
	TrainDepotWndProc
};


void ShowTrainDepotWindow(TileIndex tile)
{
	Window *w;

	w = AllocateWindowDescFront(&_train_depot_desc, tile);
	if (w) {
		w->caption_color = GetTileOwner(w->window_number);
		w->vscroll.cap = 6;
		w->hscroll.cap = 10;
		w->resize.step_width = 29;
		w->resize.step_height = 14;
		WP(w,traindepot_d).sel = INVALID_VEHICLE;
		_backup_orders_tile = 0;
	}
}

static void RailVehicleRefitWndProc(Window *w, WindowEvent *e)
{
	switch (e->event) {
	case WE_PAINT: {
		const Vehicle *v = GetVehicle(w->window_number);

		SetDParam(0, v->string_id);
		SetDParam(1, v->unitnumber);
		DrawWindowWidgets(w);

		DrawString(1, 15, STR_983F_SELECT_CARGO_TYPE_TO_CARRY, 0);

		/* TODO: Support for custom GRFSpecial-specified refitting! --pasky */
		WP(w,refit_d).cargo = DrawVehicleRefitWindow(v, WP(w, refit_d).sel);

		if (WP(w,refit_d).cargo != CT_INVALID) {
			int32 cost = DoCommand(v->tile, v->index, WP(w,refit_d).cargo, DC_QUERY_COST, CMD_REFIT_RAIL_VEHICLE);
			if (!CmdFailed(cost)) {
				SetDParam(2, cost);
				SetDParam(0, _cargoc.names_long[WP(w,refit_d).cargo]);
				SetDParam(1, _returned_refit_capacity);
				DrawString(1, 137, STR_9840_NEW_CAPACITY_COST_OF_REFIT, 0);
			}
		}
	}	break;

	case WE_CLICK:
		switch (e->click.widget) {
		case 2: { /* listbox */
			int y = e->click.pt.y - 25;
			if (y >= 0) {
				WP(w,refit_d).sel = y / 10;
				SetWindowDirty(w);
			}
		} break;
		case 4: /* refit button */
			if (WP(w,refit_d).cargo != CT_INVALID) {
				const Vehicle *v = GetVehicle(w->window_number);
				if (DoCommandP(v->tile, v->index, WP(w,refit_d).cargo, NULL, CMD_REFIT_RAIL_VEHICLE | CMD_MSG(STR_RAIL_CAN_T_REFIT_VEHICLE)))
					DeleteWindow(w);
			}
			break;
		}
		break;
	}
}


static const Widget _rail_vehicle_refit_widgets[] = {
{   WWT_CLOSEBOX,   RESIZE_NONE,    14,     0,    10,     0,    13, STR_00C5,							STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,   RESIZE_NONE,    14,    11,   239,     0,    13, STR_983B_REFIT,				STR_018C_WINDOW_TITLE_DRAG_THIS},
{     WWT_IMGBTN,   RESIZE_NONE,    14,     0,   239,    14,   135, 0x0,										STR_RAIL_SELECT_TYPE_OF_CARGO_FOR},
{     WWT_IMGBTN,   RESIZE_NONE,    14,     0,   239,   136,   157, 0x0,										STR_NULL},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,    14,     0,   239,   158,   169, STR_RAIL_REFIT_VEHICLE,STR_RAIL_REFIT_TO_CARRY_HIGHLIGHTED},
{   WIDGETS_END},
};

static const WindowDesc _rail_vehicle_refit_desc = {
	WDP_AUTO,-1, 240, 170,
	WC_VEHICLE_REFIT,WC_VEHICLE_VIEW,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS,
	_rail_vehicle_refit_widgets,
	RailVehicleRefitWndProc,
};

static void ShowRailVehicleRefitWindow(Vehicle *v)
{
	Window *w;
	DeleteWindowById(WC_VEHICLE_REFIT, v->index);
	_alloc_wnd_parent_num = v->index;
	w = AllocateWindowDesc(&_rail_vehicle_refit_desc);
	w->window_number = v->index;
	w->caption_color = v->owner;
	WP(w,refit_d).sel = -1;
}

static const Widget _train_view_widgets[] = {
{ WWT_CLOSEBOX,   RESIZE_NONE,  14,   0,  10,   0,  13, STR_00C5, STR_018B_CLOSE_WINDOW },
{ WWT_CAPTION,    RESIZE_RIGHT, 14,  11, 237,   0,  13, STR_882E, STR_018C_WINDOW_TITLE_DRAG_THIS },
{ WWT_STICKYBOX,  RESIZE_LR,    14, 238, 249,   0,  13, 0x0,      STR_STICKY_BUTTON },
{ WWT_PANEL,      RESIZE_RB,    14,   0, 231,  14, 121, 0x0,      STR_NULL },
{ WWT_6,          RESIZE_RB,    14,   2, 229,  16, 119, 0x0,      STR_NULL },
{ WWT_PUSHIMGBTN, RESIZE_RTB,   14,   0, 237, 122, 133, 0x0,      STR_8846_CURRENT_TRAIN_ACTION_CLICK },
{ WWT_PUSHIMGBTN, RESIZE_LR,    14, 232, 249,  14,  31, 0x2AB,    STR_8848_CENTER_MAIN_VIEW_ON_TRAIN },
{ WWT_PUSHIMGBTN, RESIZE_LR,    14, 232, 249,  32,  49, 0x2AD,    STR_8849_SEND_TRAIN_TO_DEPOT },
{ WWT_PUSHIMGBTN, RESIZE_LR,    14, 232, 249,  50,  67, 0x2B1,    STR_884A_FORCE_TRAIN_TO_PROCEED },
{ WWT_PUSHIMGBTN, RESIZE_LR,    14, 232, 249,  68,  85, 0x2CB,    STR_884B_REVERSE_DIRECTION_OF_TRAIN },
{ WWT_PUSHIMGBTN, RESIZE_LR,    14, 232, 249,  86, 103, 0x2B2,    STR_8847_SHOW_TRAIN_S_ORDERS },
{ WWT_PUSHIMGBTN, RESIZE_LR,    14, 232, 249, 104, 121, 0x2B3,    STR_884C_SHOW_TRAIN_DETAILS },
{ WWT_PUSHIMGBTN, RESIZE_LR,    14, 232, 249,  68,  85, 0x2B4,    STR_RAIL_REFIT_VEHICLE_TO_CARRY },
{ WWT_PUSHIMGBTN, RESIZE_LR,    14, 232, 249,  32,  49, SPR_CLONE_TRAIN,      STR_CLONE_TRAIN_INFO },
{ WWT_PANEL,      RESIZE_LRB,   14, 232, 249, 122, 121, 0x0,      STR_NULL },
{ WWT_RESIZEBOX,  RESIZE_LRTB,  14, 238, 249, 122, 133, 0x0,      STR_NULL },
{ WIDGETS_END }
};

static void ShowTrainDetailsWindow(const Vehicle* v);

static void TrainViewWndProc(Window *w, WindowEvent *e)
{
	switch (e->event) {
	case WE_PAINT: {
		const Vehicle *v, *u;
		StringID str;

		v = GetVehicle(w->window_number);

		if (v->owner != _local_player) {
			w->disabled_state = 0x3380;
		} else {
			w->disabled_state = 0;

			SETBIT(w->disabled_state, 12);

			/* See if any vehicle can be refitted */
			for (u = v; u != NULL; u = u->next) {
				if (EngInfo(u->engine_type)->refit_mask != 0 ||
						(!(RailVehInfo(v->engine_type)->flags & RVI_WAGON) && v->cargo_cap != 0)) {
					CLRBIT(w->disabled_state, 12);
					/* We have a refittable carriage, bail out */
					break;
				}
			}
		}

		/* draw widgets & caption */
		SetDParam(0, v->string_id);
		SetDParam(1, v->unitnumber);
		DrawWindowWidgets(w);

		if (v->u.rail.crash_anim_pos != 0) {
			str = STR_8863_CRASHED;
		} else if (v->breakdown_ctr == 1) {
			str = STR_885C_BROKEN_DOWN;
		} else if (v->vehstatus & VS_STOPPED) {
			if (v->u.rail.last_speed == 0) {
				str = STR_8861_STOPPED;
			} else {
				SetDParam(0, v->u.rail.last_speed);
				str = STR_TRAIN_STOPPING + _patches.vehicle_speed;
			}
		} else {
			switch (v->current_order.type) {
			case OT_GOTO_STATION: {
				str = STR_HEADING_FOR_STATION + _patches.vehicle_speed;
				SetDParam(0, v->current_order.station);
				SetDParam(1, v->u.rail.last_speed);
			} break;

			case OT_GOTO_DEPOT: {
				Depot *dep = GetDepot(v->current_order.station);
				SetDParam(0, dep->town_index);
				str = STR_HEADING_FOR_TRAIN_DEPOT + _patches.vehicle_speed;
				SetDParam(1, v->u.rail.last_speed);
			} break;

			case OT_LOADING:
			case OT_LEAVESTATION:
				str = STR_882F_LOADING_UNLOADING;
				break;

			case OT_GOTO_WAYPOINT: {
				SetDParam(0, v->current_order.station);
				str = STR_HEADING_FOR_WAYPOINT + _patches.vehicle_speed;
				SetDParam(1, v->u.rail.last_speed);
				break;
			}

			default:
				if (v->num_orders == 0) {
					str = STR_NO_ORDERS + _patches.vehicle_speed;
					SetDParam(0, v->u.rail.last_speed);
				} else
					str = STR_EMPTY;
				break;
			}
		}

		/* draw the flag plus orders */
		DrawSprite(v->vehstatus & VS_STOPPED ? SPR_FLAG_VEH_STOPPED : SPR_FLAG_VEH_RUNNING, 2, w->widget[5].top + 1);
		DrawStringCenteredTruncated(w->widget[5].left + 8, w->widget[5].right, w->widget[5].top + 1, str, 0);
		DrawWindowViewport(w);
	}	break;

	case WE_CLICK: {
		int wid = e->click.widget;
		Vehicle *v = GetVehicle(w->window_number);

		switch (wid) {
		case 5: /* start/stop train */
			DoCommandP(v->tile, v->index, 0, NULL, CMD_START_STOP_TRAIN | CMD_MSG(STR_883B_CAN_T_STOP_START_TRAIN));
			break;
		case 6:	/* center main view */
			ScrollMainWindowTo(v->x_pos, v->y_pos);
			break;
		case 7:	/* goto depot */
			/* TrainGotoDepot has a nice randomizer in the pathfinder, which causes desyncs... */
			DoCommandP(v->tile, v->index, 0, NULL, CMD_TRAIN_GOTO_DEPOT | CMD_NO_TEST_IF_IN_NETWORK | CMD_MSG(STR_8830_CAN_T_SEND_TRAIN_TO_DEPOT));
			break;
		case 8: /* force proceed */
			DoCommandP(v->tile, v->index, 0, NULL, CMD_FORCE_TRAIN_PROCEED | CMD_MSG(STR_8862_CAN_T_MAKE_TRAIN_PASS_SIGNAL));
			break;
		case 9: /* reverse direction */
			DoCommandP(v->tile, v->index, 0, NULL, CMD_REVERSE_TRAIN_DIRECTION | CMD_MSG(STR_8869_CAN_T_REVERSE_DIRECTION));
			break;
		case 10: /* show train orders */
			ShowOrdersWindow(v);
			break;
		case 11: /* show train details */
			ShowTrainDetailsWindow(v);
			break;
		case 12:
			ShowRailVehicleRefitWindow(v);
			break;
		case 13:
			DoCommandP(v->tile, v->index, _ctrl_pressed ? 1 : 0, NULL, CMD_CLONE_VEHICLE | CMD_MSG(STR_882B_CAN_T_BUILD_RAILROAD_VEHICLE));
			break;
		}
	} break;

	case WE_RESIZE:
		w->viewport->width  += e->sizing.diff.x;
		w->viewport->height += e->sizing.diff.y;
		w->viewport->virtual_width  += e->sizing.diff.x;
		w->viewport->virtual_height += e->sizing.diff.y;
		break;

	case WE_DESTROY:
		DeleteWindowById(WC_VEHICLE_REFIT, w->window_number);
		DeleteWindowById(WC_VEHICLE_ORDERS, w->window_number);
		DeleteWindowById(WC_VEHICLE_DETAILS, w->window_number);
		break;

	case WE_MOUSELOOP: {
		Vehicle *v;
		uint32 h;

		v = GetVehicle(w->window_number);
		assert(v->type == VEH_Train);
		h = CheckTrainStoppedInDepot(v) >= 0 ? (1 << 9)| (1 << 7) : (1 << 12) | (1 << 13);
		if (h != w->hidden_state) {
			w->hidden_state = h;
			SetWindowDirty(w);
		}
		break;
	}

	}
}

static const WindowDesc _train_view_desc = {
	WDP_AUTO,-1, 250, 134,
	WC_VEHICLE_VIEW,0,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS | WDF_STICKY_BUTTON | WDF_RESIZABLE,
	_train_view_widgets,
	TrainViewWndProc
};

void ShowTrainViewWindow(const Vehicle* v)
{
	Window* w = AllocateWindowDescFront(&_train_view_desc,v->index);

	if (w != NULL) {
		w->caption_color = v->owner;
		AssignWindowViewport(w, 3, 17, 0xE2, 0x66, w->window_number | (1 << 31), 0);
	}
}

static void TrainDetailsCargoTab(const Vehicle *v, int x, int y)
{
	int num;
	StringID str;

	if (v->cargo_cap != 0) {
		num = v->cargo_count;
		str = STR_8812_EMPTY;
		if (num != 0) {
			SetDParam(0, v->cargo_type);
			SetDParam(1, num);
			SetDParam(2, v->cargo_source);
			str = STR_8813_FROM;
		}
		DrawString(x, y, str, 0);
	}
}

static void TrainDetailsInfoTab(const Vehicle *v, int x, int y)
{
	const RailVehicleInfo *rvi = RailVehInfo(v->engine_type);

	if (!(rvi->flags & RVI_WAGON)) {
		SetDParam(0, GetCustomEngineName(v->engine_type));
		SetDParam(1, v->build_year + 1920);
		SetDParam(2, v->value);
		DrawString(x, y, STR_882C_BUILT_VALUE, 0x10);
	} else {
		SetDParam(0, GetCustomEngineName(v->engine_type));
		SetDParam(1, v->value);
		DrawString(x, y, STR_882D_VALUE, 0x10);
	}
}

static void TrainDetailsCapacityTab(const Vehicle *v, int x, int y)
{
	if (v->cargo_cap != 0) {
		SetDParam(0, _cargoc.names_long[v->cargo_type]);
		SetDParam(1, v->cargo_cap);
		DrawString(x, y, STR_013F_CAPACITY, 0);
	}
}

typedef void TrainDetailsDrawerProc(const Vehicle *v, int x, int y);

static TrainDetailsDrawerProc * const _train_details_drawer_proc[3] = {
	TrainDetailsCargoTab,
	TrainDetailsInfoTab,
	TrainDetailsCapacityTab,
};

static void DrawTrainDetailsWindow(Window *w)
{
	const Vehicle *v, *u;
	uint16 tot_cargo[NUM_CARGO][2];	// count total cargo ([0]-actual cargo, [1]-total cargo)
	int i,num,x,y,sel;
	byte det_tab = WP(w, traindetails_d).tab;

	/* Count number of vehicles */
	num = 0;

	// det_tab == 3 <-- Total Cargo tab
	if (det_tab == 3)	// reset tot_cargo array to 0 values
		memset(tot_cargo, 0, sizeof(tot_cargo));

	u = v = GetVehicle(w->window_number);
	do {
		if (det_tab != 3)
			num++;
		else {
			tot_cargo[u->cargo_type][0] += u->cargo_count;
			tot_cargo[u->cargo_type][1] += u->cargo_cap;
		}
	} while ((u = GetNextVehicle(u)) != NULL);

	/*	set scroll-amount seperately from counting, as to not
			compute num double for more carriages of the same type
	*/
	if (det_tab == 3) {
		for (i = 0; i != NUM_CARGO; i++) {
			if (tot_cargo[i][1] > 0)	// only count carriages that the train has
				num++;
		}
		num++;	// needs one more because first line is description string
	}

	SetVScrollCount(w, num);

	w->disabled_state = 1 << (det_tab + 9);
	if (v->owner != _local_player)
		w->disabled_state |= (1 << 2);

	if (!_patches.servint_trains) // disable service-scroller when interval is set to disabled
		w->disabled_state |= (1 << 6) | (1 << 7);

	SetDParam(0, v->string_id);
	SetDParam(1, v->unitnumber);
	DrawWindowWidgets(w);

	num = v->age / 366;
	SetDParam(1, num);

	x = 2;

	SetDParam(0, (v->age + 365 < v->max_age) ? STR_AGE : STR_AGE_RED);
	SetDParam(2, v->max_age / 366);
	SetDParam(3, GetTrainRunningCost(v) >> 8);
	DrawString(x, 15, STR_885D_AGE_RUNNING_COST_YR, 0);

	SetDParam(2, v->u.rail.cached_max_speed);
	SetDParam(1, v->u.rail.cached_power);
	SetDParam(0, v->u.rail.cached_weight);
	DrawString(x, 25, STR_VEHICLE_INFO_WEIGHT_POWER_MAX_SPEED, 0);

	SetDParam(0, v->profit_this_year);
	SetDParam(1, v->profit_last_year);
	DrawString(x, 35, STR_885F_PROFIT_THIS_YEAR_LAST_YEAR, 0);

	SetDParam(0, 100 * (v->reliability>>8) >> 8);
	SetDParam(1, v->breakdowns_since_last_service);
	DrawString(x, 45, STR_8860_RELIABILITY_BREAKDOWNS, 0);

	SetDParam(0, v->service_interval);
	SetDParam(1, v->date_of_last_service);
	DrawString(x + 11, 57 + (w->vscroll.cap * 14), _patches.servint_ispercent ? STR_SERVICING_INTERVAL_PERCENT : STR_883C_SERVICING_INTERVAL_DAYS, 0);

	y = 57;
	sel = w->vscroll.pos;

	// draw the first 3 details tabs
	if (det_tab != 3) {
		x = 1;
		for (;;) {
			if (--sel < 0 && sel >= -w->vscroll.cap) {
				int dx = 0;
				u = v;
				do {
					DrawTrainImage(u, x + WagonLengthToPixels(dx), y, 1, 0, INVALID_VEHICLE);
					dx += u->u.rail.cached_veh_length;
					u = u->next;
				} while (u != NULL && IsArticulatedPart(u));
				_train_details_drawer_proc[WP(w,traindetails_d).tab](v, x + WagonLengthToPixels(dx) + 2, y + 2);
				y += 14;
			}
			if ((v = GetNextVehicle(v)) == NULL)
				return;
		}
	} else {
		// draw total cargo tab
		DrawString(x, y + 2, STR_013F_TOTAL_CAPACITY_TEXT, 0);
		for (i = 0; i != NUM_CARGO; i++) {
			if (tot_cargo[i][1] > 0 && --sel < 0 && sel > -w->vscroll.cap) {
				y += 14;
				// STR_013F_TOTAL_CAPACITY			:{LTBLUE}- {CARGO} ({SHORTCARGO})
				SetDParam(0, i);								// {CARGO} #1
				SetDParam(1, tot_cargo[i][0]);	// {CARGO} #2
				SetDParam(2, i);								// {SHORTCARGO} #1
				SetDParam(3, tot_cargo[i][1]);	// {SHORTCARGO} #2
				DrawString(x, y + 2, STR_013F_TOTAL_CAPACITY, 0);
			}
		}
	}
}

static void TrainDetailsWndProc(Window *w, WindowEvent *e)
{
	switch (e->event) {
	case WE_PAINT:
		DrawTrainDetailsWindow(w);
		break;
	case WE_CLICK: {
		int mod;
		const Vehicle *v;
		switch (e->click.widget) {
		case 2: /* name train */
			v = GetVehicle(w->window_number);
			SetDParam(0, v->unitnumber);
			ShowQueryString(v->string_id, STR_8865_NAME_TRAIN, 31, 150, w->window_class, w->window_number);
			break;
		case 6:	/* inc serv interval */
			mod = _ctrl_pressed? 5 : 10;
			goto do_change_service_int;

		case 7: /* dec serv interval */
			mod = _ctrl_pressed? -5 : -10;
do_change_service_int:
			v = GetVehicle(w->window_number);

			mod = GetServiceIntervalClamped(mod + v->service_interval);
			if (mod == v->service_interval) return;

			DoCommandP(v->tile, v->index, mod, NULL, CMD_CHANGE_SERVICE_INT | CMD_MSG(STR_018A_CAN_T_CHANGE_SERVICING));
			break;
		/* details buttons*/
		case 9:		// Cargo
		case 10:	// Information
		case 11:	// Capacities
		case 12:	// Total cargo
			CLRBIT(w->disabled_state, 9);
			CLRBIT(w->disabled_state, 10);
			CLRBIT(w->disabled_state, 11);
			CLRBIT(w->disabled_state, 12);
			SETBIT(w->disabled_state, e->click.widget);
			WP(w,traindetails_d).tab = e->click.widget - 9;
			SetWindowDirty(w);
			break;
		}
	} break;

	case WE_4:
		if (FindWindowById(WC_VEHICLE_VIEW, w->window_number) == NULL)
			DeleteWindow(w);
		break;

	case WE_ON_EDIT_TEXT:
		if (e->edittext.str[0] != '\0') {
			_cmd_text = e->edittext.str;
			DoCommandP(0, w->window_number, 0, NULL,
				CMD_NAME_VEHICLE | CMD_MSG(STR_8866_CAN_T_NAME_TRAIN));
		}
		break;

	case WE_RESIZE:
		if (e->sizing.diff.y == 0)
			break;

		w->vscroll.cap += e->sizing.diff.y / 14;
		w->widget[4].unkA = (w->vscroll.cap << 8) + 1;
		break;
	}
}

static const Widget _train_details_widgets[] = {
{   WWT_CLOSEBOX, RESIZE_NONE,   14,   0,  10,   0,  13, STR_00C5,             STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION, RESIZE_NONE,   14,  11, 329,   0,  13, STR_8802_DETAILS,     STR_018C_WINDOW_TITLE_DRAG_THIS},
{ WWT_PUSHTXTBTN, RESIZE_NONE,   14, 330, 369,   0,  13, STR_01AA_NAME,        STR_8867_NAME_TRAIN},
{      WWT_PANEL, RESIZE_NONE,   14,   0, 369,  14,  55, 0x0,                  STR_NULL},
{     WWT_MATRIX, RESIZE_BOTTOM, 14,   0, 357,  56, 139, 0x601,                STR_NULL},
{  WWT_SCROLLBAR, RESIZE_BOTTOM, 14, 358, 369,  56, 139, 0x0,                  STR_0190_SCROLL_BAR_SCROLLS_LIST},
{ WWT_PUSHTXTBTN, RESIZE_TB,     14,   0,  10, 140, 145, STR_0188,             STR_884D_INCREASE_SERVICING_INTERVAL},
{ WWT_PUSHTXTBTN, RESIZE_TB,     14,   0,  10, 146, 151, STR_0189,             STR_884E_DECREASE_SERVICING_INTERVAL},
{      WWT_PANEL, RESIZE_TB,     14,  11, 369, 140, 151, 0x0,                  STR_NULL},
{ WWT_PUSHTXTBTN, RESIZE_TB,     14,   0,  89, 152, 163, STR_013C_CARGO,       STR_884F_SHOW_DETAILS_OF_CARGO_CARRIED},
{ WWT_PUSHTXTBTN, RESIZE_TB,     14,  90, 178, 152, 163, STR_013D_INFORMATION, STR_8850_SHOW_DETAILS_OF_TRAIN_VEHICLES},
{ WWT_PUSHTXTBTN, RESIZE_TB,     14, 179, 268, 152, 163, STR_013E_CAPACITIES,  STR_8851_SHOW_CAPACITIES_OF_EACH},
{ WWT_PUSHTXTBTN, RESIZE_TB,     14, 269, 357, 152, 163, STR_013E_TOTAL_CARGO, STR_8852_SHOW_TOTAL_CARGO},
{  WWT_RESIZEBOX, RESIZE_TB,     14, 358, 369, 152, 163, 0x0,                  STR_RESIZE_BUTTON},
{   WIDGETS_END},
};


static const WindowDesc _train_details_desc = {
	WDP_AUTO,-1, 370, 164,
	WC_VEHICLE_DETAILS,WC_VEHICLE_VIEW,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS | WDF_RESIZABLE,
	_train_details_widgets,
	TrainDetailsWndProc
};


static void ShowTrainDetailsWindow(const Vehicle* v)
{
	Window *w;
	VehicleID veh = v->index;

	DeleteWindowById(WC_VEHICLE_ORDERS, veh);
	DeleteWindowById(WC_VEHICLE_DETAILS, veh);

	_alloc_wnd_parent_num = veh;
	w = AllocateWindowDesc(&_train_details_desc);

	w->window_number = veh;
	w->caption_color = v->owner;
	w->vscroll.cap = 6;
	w->widget[4].unkA = (w->vscroll.cap << 8) + 1;

	w->resize.step_height = 14;
	w->resize.height = w->height - 14 * 2; /* Minimum of 4 wagons in the display */

	WP(w,traindetails_d).tab = 0;
}

static const Widget _player_trains_widgets[] = {
{   WWT_CLOSEBOX,   RESIZE_NONE,    14,     0,    10,     0,    13, STR_00C5,							STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,  RESIZE_RIGHT,    14,    11,   312,     0,    13, STR_881B_TRAINS,				STR_018C_WINDOW_TITLE_DRAG_THIS},
{  WWT_STICKYBOX,     RESIZE_LR,    14,   313,   324,     0,    13, 0x0,										STR_STICKY_BUTTON},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,    14,     0,    80,    14,    25, STR_SORT_BY,						STR_SORT_ORDER_TIP},
{      WWT_PANEL,   RESIZE_NONE,    14,    81,   235,    14,    25, 0x0,										STR_SORT_CRITERIA_TIP},
{    WWT_TEXTBTN,   RESIZE_NONE,    14,   236,   247,    14,    25, STR_0225,							STR_SORT_CRITERIA_TIP},
{      WWT_PANEL,  RESIZE_RIGHT,    14,   248,   324,    14,    25, 0x0,										STR_NULL},
{     WWT_MATRIX,     RESIZE_RB,    14,     0,   312,    26,   207, 0x701,									STR_883D_TRAINS_CLICK_ON_TRAIN_FOR},
{  WWT_SCROLLBAR,    RESIZE_LRB,    14,   313,   324,    26,   207, 0x0,										STR_0190_SCROLL_BAR_SCROLLS_LIST},
{ WWT_PUSHTXTBTN,     RESIZE_TB,    14,     0,   156,   208,   219, STR_8815_NEW_VEHICLES,	STR_883E_BUILD_NEW_TRAINS_REQUIRES},
{ WWT_PUSHTXTBTN,     RESIZE_TB,    14,   157,   312,   208,   219, STR_REPLACE_VEHICLES,    STR_REPLACE_HELP},
{      WWT_PANEL,    RESIZE_RTB,    14,   313,   312,   208,   219, 0x0,										STR_NULL},
{  WWT_RESIZEBOX,   RESIZE_LRTB,    14,   313,   324,   208,   219, 0x0,										STR_RESIZE_BUTTON},
{   WIDGETS_END},
};

static const Widget _other_player_trains_widgets[] = {
{   WWT_CLOSEBOX,   RESIZE_NONE,    14,     0,    10,     0,    13, STR_00C5,							STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,  RESIZE_RIGHT,    14,    11,   312,     0,    13, STR_881B_TRAINS,				STR_018C_WINDOW_TITLE_DRAG_THIS},
{  WWT_STICKYBOX,     RESIZE_LR,    14,   313,   324,     0,    13, 0x0,										STR_STICKY_BUTTON},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,    14,     0,    80,    14,    25, STR_SORT_BY,						STR_SORT_ORDER_TIP},
{      WWT_PANEL,   RESIZE_NONE,    14,    81,   235,    14,    25, 0x0,										STR_SORT_CRITERIA_TIP},
{    WWT_TEXTBTN,   RESIZE_NONE,    14,   236,   247,    14,    25, STR_0225,							STR_SORT_CRITERIA_TIP},
{      WWT_PANEL,  RESIZE_RIGHT,    14,   248,   324,    14,    25, 0x0,										STR_NULL},
{     WWT_MATRIX,     RESIZE_RB,    14,     0,   312,    26,   207, 0x701,									STR_883D_TRAINS_CLICK_ON_TRAIN_FOR},
{  WWT_SCROLLBAR,    RESIZE_LRB,    14,   313,   324,    26,   207, 0x0,										STR_0190_SCROLL_BAR_SCROLLS_LIST},
{      WWT_PANEL,    RESIZE_RTB,    14,     0,   312,   208,   219, 0x0,										STR_NULL},
{  WWT_RESIZEBOX,   RESIZE_LRTB,    14,   313,   324,   208,   219, 0x0,										STR_RESIZE_BUTTON},
{   WIDGETS_END},
};

static void PlayerTrainsWndProc(Window *w, WindowEvent *e)
{
	StationID station = GB(w->window_number, 16, 16);
	PlayerID owner = GB(w->window_number, 0, 8);
	vehiclelist_d *vl = &WP(w, vehiclelist_d);

	switch (e->event) {
	case WE_PAINT: {
		int x = 2;
		int y = PLY_WND_PRC__OFFSET_TOP_WIDGET;
		int max;
		int i;

		BuildVehicleList(vl, VEH_Train, owner, station);
		SortVehicleList(vl);

		SetVScrollCount(w, vl->list_length);

		// disable 'Sort By' tooltip on Unsorted sorting criteria
		if (vl->sort_type == SORT_BY_UNSORTED)
			w->disabled_state |= (1 << 3);

		/* draw the widgets */
		{
			const Player *p = GetPlayer(owner);
			if (station == INVALID_STATION) {
				/* Company Name -- (###) Trains */
				SetDParam(0, p->name_1);
				SetDParam(1, p->name_2);
				SetDParam(2, w->vscroll.count);
				w->widget[1].unkA = STR_881B_TRAINS;
			} else {
				/* Station Name -- (###) Trains */
				SetDParam(0, station);
				SetDParam(1, w->vscroll.count);
				w->widget[1].unkA = STR_SCHEDULED_TRAINS;
			}
			DrawWindowWidgets(w);
		}
		/* draw sorting criteria string */
		DrawString(85, 15, _vehicle_sort_listing[vl->sort_type], 0x10);
		/* draw arrow pointing up/down for ascending/descending sorting */
		DoDrawString(vl->flags & VL_DESC ? DOWNARROW : UPARROW, 69, 15, 0x10);

		max = min(w->vscroll.pos + w->vscroll.cap, vl->list_length);
		for (i = w->vscroll.pos; i < max; ++i) {
			Vehicle *v = GetVehicle(vl->sort_list[i].index);
			StringID str;

			assert(v->type == VEH_Train && v->owner == owner);

			DrawTrainImage(v, x + 21, y + 6, w->hscroll.cap, 0, INVALID_VEHICLE);
			DrawVehicleProfitButton(v, x, y + 13);

			SetDParam(0, v->unitnumber);
			if (IsTileDepotType(v->tile, TRANSPORT_RAIL) && (v->vehstatus & VS_HIDDEN))
				str = STR_021F;
			else
				str = v->age > v->max_age - 366 ? STR_00E3 : STR_00E2;
			DrawString(x, y + 2, str, 0);

			SetDParam(0, v->profit_this_year);
			SetDParam(1, v->profit_last_year);
			DrawString(x + 21, y + 18, STR_0198_PROFIT_THIS_YEAR_LAST_YEAR, 0);

			if (v->string_id != STR_SV_TRAIN_NAME) {
				SetDParam(0, v->string_id);
				DrawString(x + 21, y, STR_01AB, 0);
			}

			y += PLY_WND_PRC__SIZE_OF_ROW_SMALL;
		}
		break;
	}

	case WE_CLICK: {
		switch (e->click.widget) {
		case 3: /* Flip sorting method ascending/descending */
			vl->flags ^= VL_DESC;
			vl->flags |= VL_RESORT;
			_sorting.train.order = !!(vl->flags & VL_DESC);
			SetWindowDirty(w);
			break;

		case 4: case 5:/* Select sorting criteria dropdown menu */
			ShowDropDownMenu(w, _vehicle_sort_listing, vl->sort_type, 5, 0, 0);
			return;

		case 7: { /* Matrix to show vehicles */
			uint32 id_v = (e->click.pt.y - PLY_WND_PRC__OFFSET_TOP_WIDGET) / PLY_WND_PRC__SIZE_OF_ROW_SMALL;

			if (id_v >= w->vscroll.cap) return; // click out of bounds

			id_v += w->vscroll.pos;

			{
				Vehicle *v;

				if (id_v >= vl->list_length) return; // click out of list bound

				v = GetVehicle(vl->sort_list[id_v].index);

				assert(v->type == VEH_Train && IsFrontEngine(v) && v->owner == owner);

				ShowTrainViewWindow(v);
			}
		} break;

		case 9: { /* Build new Vehicle */
			TileIndex tile;

			if (!IsWindowOfPrototype(w, _player_trains_widgets))
				break;

			tile = _last_built_train_depot_tile;
			do {
				if (IsTileDepotType(tile, TRANSPORT_RAIL) &&
						IsTileOwner(tile, _local_player)) {
					ShowTrainDepotWindow(tile);
					ShowBuildTrainWindow(tile);
					return;
				}

				tile = TILE_MASK(tile + 1);
			} while (tile != _last_built_train_depot_tile);

			ShowBuildTrainWindow(0);
		} break;
		case 10: {
			if (!IsWindowOfPrototype(w, _player_trains_widgets))
				break;

			ShowReplaceVehicleWindow(VEH_Train);
			break;
 		}

		}
	}	break;

	case WE_DROPDOWN_SELECT: /* we have selected a dropdown item in the list */
		if (vl->sort_type != e->dropdown.index) {
			// value has changed -> resort
			vl->flags |= VL_RESORT;
			vl->sort_type = e->dropdown.index;
			_sorting.train.criteria = vl->sort_type;

			// enable 'Sort By' if a sorter criteria is chosen
			if (vl->sort_type != SORT_BY_UNSORTED)
				CLRBIT(w->disabled_state, 3);
		}
		SetWindowDirty(w);
		break;

	case WE_CREATE: /* set up resort timer */
		vl->sort_list = NULL;
		vl->flags = VL_REBUILD | (_sorting.train.order << (VL_DESC - 1));
		vl->sort_type = _sorting.train.criteria;
		vl->resort_timer = DAY_TICKS * PERIODIC_RESORT_DAYS;
		break;

	case WE_DESTROY:
		free(vl->sort_list);
		break;

	case WE_TICK: /* resort the list every 20 seconds orso (10 days) */
		if (--vl->resort_timer == 0) {
			DEBUG(misc, 1) ("Periodic resort trains list player %d station %d",
				owner, station);
			vl->resort_timer = DAY_TICKS * PERIODIC_RESORT_DAYS;
			vl->flags |= VL_RESORT;
			SetWindowDirty(w);
		}
		break;

	case WE_RESIZE:
		/* Update the scroll + matrix */
		w->hscroll.cap += e->sizing.diff.x / 29;
		w->vscroll.cap += e->sizing.diff.y / PLY_WND_PRC__SIZE_OF_ROW_SMALL;
		w->widget[7].unkA = (w->vscroll.cap << 8) + 1;
		break;
	}
}

static const WindowDesc _player_trains_desc = {
	WDP_AUTO, -1, 325, 220,
	WC_TRAINS_LIST,0,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS | WDF_STICKY_BUTTON | WDF_RESIZABLE,
	_player_trains_widgets,
	PlayerTrainsWndProc
};

static const WindowDesc _other_player_trains_desc = {
	WDP_AUTO, -1, 325, 220,
	WC_TRAINS_LIST,0,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS | WDF_STICKY_BUTTON | WDF_RESIZABLE,
	_other_player_trains_widgets,
	PlayerTrainsWndProc
};

void ShowPlayerTrains(PlayerID player, StationID station)
{
	Window *w;

	if (player == _local_player) {
		w = AllocateWindowDescFront(&_player_trains_desc, (station << 16) | player);
	} else {
		w = AllocateWindowDescFront(&_other_player_trains_desc, (station << 16) | player);
	}
	if (w) {
		w->caption_color = player;
		w->hscroll.cap = 10;
		w->vscroll.cap = 7; // maximum number of vehicles shown
		w->widget[7].unkA = (w->vscroll.cap << 8) + 1;
		w->resize.step_height = PLY_WND_PRC__SIZE_OF_ROW_SMALL;
		w->resize.step_width = 29;
		w->resize.height = 220 - (PLY_WND_PRC__SIZE_OF_ROW_SMALL * 3); /* Minimum of 4 vehicles */
	}
}
