engine_gui.cpp

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/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "stdafx.h"
#include "window_gui.h"
#include "engine_base.h"
#include "command_func.h"
#include "strings_func.h"
#include "engine_gui.h"
#include "articulated_vehicles.h"
#include "vehicle_func.h"
#include "company_func.h"
#include "rail.h"
#include "road.h"
#include "settings_type.h"
#include "train.h"
#include "roadveh.h"
#include "ship.h"
#include "aircraft.h"
#include "engine_cmd.h"
#include "zoom_func.h"
 
#include "widgets/engine_widget.h"
 
#include "table/strings.h"
 
#include "safeguards.h"
 
StringID GetEngineCategoryName(EngineID engine)
{
  const Engine *e = Engine::Get(engine);
  switch (e->type) {
    default: NOT_REACHED();
    case VEH_ROAD:
      return GetRoadTypeInfo(e->u.road.roadtype)->strings.new_engine;
    case VEH_AIRCRAFT:          return STR_ENGINE_PREVIEW_AIRCRAFT;
    case VEH_SHIP:              return STR_ENGINE_PREVIEW_SHIP;
    case VEH_TRAIN:
      return GetRailTypeInfo(e->u.rail.railtype)->strings.new_loco;
  }
}
 
static const NWidgetPart _nested_engine_preview_widgets[] = {
  NWidget(NWID_HORIZONTAL),
    NWidget(WWT_CLOSEBOX, COLOUR_LIGHT_BLUE),
    NWidget(WWT_CAPTION, COLOUR_LIGHT_BLUE), SetDataTip(STR_ENGINE_PREVIEW_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
  EndContainer(),
  NWidget(WWT_PANEL, COLOUR_LIGHT_BLUE),
    NWidget(WWT_EMPTY, INVALID_COLOUR, WID_EP_QUESTION), SetMinimalSize(300, 0), SetPadding(8, 8, 8, 8), SetFill(1, 0),
    NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(85, 10, 85),
      NWidget(WWT_PUSHTXTBTN, COLOUR_LIGHT_BLUE, WID_EP_NO), SetDataTip(STR_QUIT_NO, STR_NULL), SetFill(1, 0),
      NWidget(WWT_PUSHTXTBTN, COLOUR_LIGHT_BLUE, WID_EP_YES), SetDataTip(STR_QUIT_YES, STR_NULL), SetFill(1, 0),
    EndContainer(),
    NWidget(NWID_SPACER), SetMinimalSize(0, 8),
  EndContainer(),
};
 
struct EnginePreviewWindow : Window {
  int vehicle_space; // The space to show the vehicle image
 
  EnginePreviewWindow(WindowDesc *desc, WindowNumber window_number) : Window(desc)
  {
    this->InitNested(window_number);
 
    /* There is no way to recover the window; so disallow closure via DEL; unless SHIFT+DEL */
    this->flags |= WF_STICKY;
  }
 
  void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize) override
  {
    if (widget != WID_EP_QUESTION) return;
 
    /* Get size of engine sprite, on loan from depot_gui.cpp */
    EngineID engine = this->window_number;
    EngineImageType image_type = EIT_PURCHASE;
    uint x, y;
    int x_offs, y_offs;
 
    const Engine *e = Engine::Get(engine);
    switch (e->type) {
      default: NOT_REACHED();
      case VEH_TRAIN:    GetTrainSpriteSize(   engine, x, y, x_offs, y_offs, image_type); break;
      case VEH_ROAD:     GetRoadVehSpriteSize( engine, x, y, x_offs, y_offs, image_type); break;
      case VEH_SHIP:     GetShipSpriteSize(    engine, x, y, x_offs, y_offs, image_type); break;
      case VEH_AIRCRAFT: GetAircraftSpriteSize(engine, x, y, x_offs, y_offs, image_type); break;
    }
    this->vehicle_space = std::max<int>(ScaleSpriteTrad(40), y - y_offs);
 
    size->width = std::max(size->width, x - x_offs);
    SetDParam(0, GetEngineCategoryName(engine));
    size->height = GetStringHeight(STR_ENGINE_PREVIEW_MESSAGE, size->width) + WidgetDimensions::scaled.vsep_wide + FONT_HEIGHT_NORMAL + this->vehicle_space;
    SetDParam(0, engine);
    size->height += GetStringHeight(GetEngineInfoString(engine), size->width);
  }
 
  void DrawWidget(const Rect &r, int widget) const override
  {
    if (widget != WID_EP_QUESTION) return;
 
    EngineID engine = this->window_number;
    SetDParam(0, GetEngineCategoryName(engine));
    int y = DrawStringMultiLine(r, STR_ENGINE_PREVIEW_MESSAGE, TC_FROMSTRING, SA_HOR_CENTER | SA_TOP) + WidgetDimensions::scaled.vsep_wide;
 
    SetDParam(0, PackEngineNameDParam(engine, EngineNameContext::PreviewNews));
    DrawString(r.left, r.right, y, STR_ENGINE_NAME, TC_BLACK, SA_HOR_CENTER);
    y += FONT_HEIGHT_NORMAL;
 
    DrawVehicleEngine(r.left, r.right, this->width >> 1, y + this->vehicle_space / 2, engine, GetEnginePalette(engine, _local_company), EIT_PREVIEW);
 
    y += this->vehicle_space;
    DrawStringMultiLine(r.left, r.right, y, r.bottom, GetEngineInfoString(engine), TC_FROMSTRING, SA_CENTER);
  }
 
  void OnClick(Point pt, int widget, int click_count) override
  {
    switch (widget) {
      case WID_EP_YES:
        Command<CMD_WANT_ENGINE_PREVIEW>::Post(this->window_number);
        FALLTHROUGH;
      case WID_EP_NO:
        if (!_shift_pressed) this->Close();
        break;
    }
  }
 
  void OnInvalidateData(int data = 0, bool gui_scope = true) override
  {
    if (!gui_scope) return;
 
    EngineID engine = this->window_number;
    if (Engine::Get(engine)->preview_company != _local_company) this->Close();
  }
};
 
static WindowDesc _engine_preview_desc(
  WDP_CENTER, "engine_preview", 0, 0,
  WC_ENGINE_PREVIEW, WC_NONE,
  WDF_CONSTRUCTION,
  _nested_engine_preview_widgets, lengthof(_nested_engine_preview_widgets)
);
 
 
void ShowEnginePreviewWindow(EngineID engine)
{
  AllocateWindowDescFront<EnginePreviewWindow>(&_engine_preview_desc, engine);
}
 
uint GetTotalCapacityOfArticulatedParts(EngineID engine)
{
  CargoArray cap = GetCapacityOfArticulatedParts(engine);
  return cap.GetSum<uint>();
}
 
static StringID GetTrainEngineInfoString(const Engine *e)
{
  SetDParam(0, e->GetCost());
  SetDParam(2, e->GetDisplayMaxSpeed());
  SetDParam(3, e->GetPower());
  SetDParam(1, e->GetDisplayWeight());
  SetDParam(7, e->GetDisplayMaxTractiveEffort());
 
  SetDParam(4, e->GetRunningCost());
 
  uint capacity = GetTotalCapacityOfArticulatedParts(e->index);
  if (capacity != 0) {
    SetDParam(5, e->GetDefaultCargoType());
    SetDParam(6, capacity);
  } else {
    SetDParam(5, CT_INVALID);
  }
  return (_settings_game.vehicle.train_acceleration_model != AM_ORIGINAL && GetRailTypeInfo(e->u.rail.railtype)->acceleration_type != 2) ? STR_ENGINE_PREVIEW_COST_WEIGHT_SPEED_POWER_MAX_TE : STR_ENGINE_PREVIEW_COST_WEIGHT_SPEED_POWER;
}
 
static StringID GetAircraftEngineInfoString(const Engine *e)
{
  CargoID cargo = e->GetDefaultCargoType();
  uint16 mail_capacity;
  uint capacity = e->GetDisplayDefaultCapacity(&mail_capacity);
  uint16 range = e->GetRange();
 
  uint i = 0;
  SetDParam(i++, e->GetCost());
  SetDParam(i++, e->GetDisplayMaxSpeed());
  SetDParam(i++, e->GetAircraftTypeText());
  if (range > 0) SetDParam(i++, range);
  SetDParam(i++, cargo);
  SetDParam(i++, capacity);
 
  if (mail_capacity > 0) {
    SetDParam(i++, CT_MAIL);
    SetDParam(i++, mail_capacity);
    SetDParam(i++, e->GetRunningCost());
    return range > 0 ? STR_ENGINE_PREVIEW_COST_MAX_SPEED_TYPE_RANGE_CAP_CAP_RUNCOST : STR_ENGINE_PREVIEW_COST_MAX_SPEED_TYPE_CAP_CAP_RUNCOST;
  } else {
    SetDParam(i++, e->GetRunningCost());
    return range > 0 ? STR_ENGINE_PREVIEW_COST_MAX_SPEED_TYPE_RANGE_CAP_RUNCOST : STR_ENGINE_PREVIEW_COST_MAX_SPEED_TYPE_CAP_RUNCOST;
  }
}
 
static StringID GetRoadVehEngineInfoString(const Engine *e)
{
  if (_settings_game.vehicle.roadveh_acceleration_model == AM_ORIGINAL) {
    SetDParam(0, e->GetCost());
    SetDParam(1, e->GetDisplayMaxSpeed());
    uint capacity = GetTotalCapacityOfArticulatedParts(e->index);
    if (capacity != 0) {
      SetDParam(2, e->GetDefaultCargoType());
      SetDParam(3, capacity);
    } else {
      SetDParam(2, CT_INVALID);
    }
    SetDParam(4, e->GetRunningCost());
    return STR_ENGINE_PREVIEW_COST_MAX_SPEED_CAP_RUNCOST;
  } else {
    SetDParam(0, e->GetCost());
    SetDParam(2, e->GetDisplayMaxSpeed());
    SetDParam(3, e->GetPower());
    SetDParam(1, e->GetDisplayWeight());
    SetDParam(7, e->GetDisplayMaxTractiveEffort());
 
    SetDParam(4, e->GetRunningCost());
 
    uint capacity = GetTotalCapacityOfArticulatedParts(e->index);
    if (capacity != 0) {
      SetDParam(5, e->GetDefaultCargoType());
      SetDParam(6, capacity);
    } else {
      SetDParam(5, CT_INVALID);
    }
    return STR_ENGINE_PREVIEW_COST_WEIGHT_SPEED_POWER_MAX_TE;
  }
}
 
static StringID GetShipEngineInfoString(const Engine *e)
{
  SetDParam(0, e->GetCost());
  SetDParam(1, e->GetDisplayMaxSpeed());
  SetDParam(2, e->GetDefaultCargoType());
  SetDParam(3, e->GetDisplayDefaultCapacity());
  SetDParam(4, e->GetRunningCost());
  return STR_ENGINE_PREVIEW_COST_MAX_SPEED_CAP_RUNCOST;
}
 
 
StringID GetEngineInfoString(EngineID engine)
{
  const Engine *e = Engine::Get(engine);
 
  switch (e->type) {
    case VEH_TRAIN:
      return GetTrainEngineInfoString(e);
 
    case VEH_ROAD:
      return GetRoadVehEngineInfoString(e);
 
    case VEH_SHIP:
      return GetShipEngineInfoString(e);
 
    case VEH_AIRCRAFT:
      return GetAircraftEngineInfoString(e);
 
    default: NOT_REACHED();
  }
}
 
void DrawVehicleEngine(int left, int right, int preferred_x, int y, EngineID engine, PaletteID pal, EngineImageType image_type)
{
  const Engine *e = Engine::Get(engine);
 
  switch (e->type) {
    case VEH_TRAIN:
      DrawTrainEngine(left, right, preferred_x, y, engine, pal, image_type);
      break;
 
    case VEH_ROAD:
      DrawRoadVehEngine(left, right, preferred_x, y, engine, pal, image_type);
      break;
 
    case VEH_SHIP:
      DrawShipEngine(left, right, preferred_x, y, engine, pal, image_type);
      break;
 
    case VEH_AIRCRAFT:
      DrawAircraftEngine(left, right, preferred_x, y, engine, pal, image_type);
      break;
 
    default: NOT_REACHED();
  }
}
 
void EngList_Sort(GUIEngineList *el, EngList_SortTypeFunction compare)
{
  if (el->size() < 2) return;
  std::sort(el->begin(), el->end(), compare);
}
 
void EngList_SortPartial(GUIEngineList *el, EngList_SortTypeFunction compare, size_t begin, size_t num_items)
{
  if (num_items < 2) return;
  assert(begin < el->size());
  assert(begin + num_items <= el->size());
  std::sort(el->begin() + begin, el->begin() + begin + num_items, compare);
}