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news_gui.cpp
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news_gui.cpp
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/* $Id$ */
/*
* 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/>.
*/
/** @file news_gui.cpp GUI functions related to news messages. */
#include "stdafx.h"
#include "gui.h"
#include "viewport_func.h"
#include "strings_func.h"
#include "window_func.h"
#include "date_func.h"
#include "vehicle_base.h"
#include "vehicle_func.h"
#include "vehicle_gui.h"
#include "station_base.h"
#include "industry.h"
#include "town.h"
#include "sound_func.h"
#include "string_func.h"
#include "widgets/dropdown_func.h"
#include "statusbar_gui.h"
#include "company_manager_face.h"
#include "company_func.h"
#include "engine_base.h"
#include "engine_gui.h"
#include "core/geometry_func.hpp"
#include "command_func.h"
#include "company_base.h"
#include "settings_internal.h"
#include "guitimer_func.h"
#include "widgets/news_widget.h"
#include "table/strings.h"
#include "safeguards.h"
const NewsItem *_statusbar_news_item = nullptr;
static uint MIN_NEWS_AMOUNT = 30; ///< preferred minimum amount of news messages
static uint _total_news = 0; ///< current number of news items
static NewsItem *_oldest_news = nullptr; ///< head of news items queue
NewsItem *_latest_news = nullptr; ///< tail of news items queue
/**
* Forced news item.
* Users can force an item by accessing the history or "last message".
* If the message being shown was forced by the user, a pointer is stored
* in _forced_news. Otherwise, \a _forced_news variable is nullptr.
*/
static const NewsItem *_forced_news = nullptr;
/** Current news item (last item shown regularly). */
static const NewsItem *_current_news = nullptr;
/**
* Get the position a news-reference is referencing.
* @param reftype The type of reference.
* @param ref The reference.
* @return A tile for the referenced object, or INVALID_TILE if none.
*/
static TileIndex GetReferenceTile(NewsReferenceType reftype, uint32 ref)
{
switch (reftype) {
case NR_TILE: return (TileIndex)ref;
case NR_STATION: return Station::Get((StationID)ref)->xy;
case NR_INDUSTRY: return Industry::Get((IndustryID)ref)->location.tile + TileDiffXY(1, 1);
case NR_TOWN: return Town::Get((TownID)ref)->xy;
default: return INVALID_TILE;
}
}
/* Normal news items. */
static const NWidgetPart _nested_normal_news_widgets[] = {
NWidget(WWT_PANEL, COLOUR_WHITE, WID_N_PANEL),
NWidget(NWID_HORIZONTAL), SetPadding(1, 1, 0, 1),
NWidget(WWT_CLOSEBOX, COLOUR_WHITE, WID_N_CLOSEBOX), SetPadding(0, 0, 0, 1),
NWidget(NWID_SPACER), SetFill(1, 0),
NWidget(NWID_VERTICAL),
NWidget(WWT_LABEL, COLOUR_WHITE, WID_N_DATE), SetDataTip(STR_DATE_LONG_SMALL, STR_NULL),
NWidget(NWID_SPACER), SetFill(0, 1),
EndContainer(),
EndContainer(),
NWidget(WWT_EMPTY, COLOUR_WHITE, WID_N_MESSAGE), SetMinimalSize(428, 154), SetPadding(0, 5, 1, 5),
EndContainer(),
};
static WindowDesc _normal_news_desc(
WDP_MANUAL, nullptr, 0, 0,
WC_NEWS_WINDOW, WC_NONE,
0,
_nested_normal_news_widgets, lengthof(_nested_normal_news_widgets)
);
/* New vehicles news items. */
static const NWidgetPart _nested_vehicle_news_widgets[] = {
NWidget(WWT_PANEL, COLOUR_WHITE, WID_N_PANEL),
NWidget(NWID_HORIZONTAL), SetPadding(1, 1, 0, 1),
NWidget(NWID_VERTICAL),
NWidget(WWT_CLOSEBOX, COLOUR_WHITE, WID_N_CLOSEBOX), SetPadding(0, 0, 0, 1),
NWidget(NWID_SPACER), SetFill(0, 1),
EndContainer(),
NWidget(WWT_LABEL, COLOUR_WHITE, WID_N_VEH_TITLE), SetFill(1, 1), SetMinimalSize(419, 55), SetDataTip(STR_EMPTY, STR_NULL),
EndContainer(),
NWidget(WWT_PANEL, COLOUR_WHITE, WID_N_VEH_BKGND), SetPadding(0, 25, 1, 25),
NWidget(NWID_VERTICAL),
NWidget(WWT_EMPTY, INVALID_COLOUR, WID_N_VEH_NAME), SetMinimalSize(369, 33), SetFill(1, 0),
NWidget(WWT_EMPTY, INVALID_COLOUR, WID_N_VEH_SPR), SetMinimalSize(369, 32), SetFill(1, 0),
NWidget(WWT_EMPTY, INVALID_COLOUR, WID_N_VEH_INFO), SetMinimalSize(369, 46), SetFill(1, 0),
EndContainer(),
EndContainer(),
EndContainer(),
};
static WindowDesc _vehicle_news_desc(
WDP_MANUAL, nullptr, 0, 0,
WC_NEWS_WINDOW, WC_NONE,
0,
_nested_vehicle_news_widgets, lengthof(_nested_vehicle_news_widgets)
);
/* Company news items. */
static const NWidgetPart _nested_company_news_widgets[] = {
NWidget(WWT_PANEL, COLOUR_WHITE, WID_N_PANEL),
NWidget(NWID_HORIZONTAL), SetPadding(1, 1, 0, 1),
NWidget(NWID_VERTICAL),
NWidget(WWT_CLOSEBOX, COLOUR_WHITE, WID_N_CLOSEBOX), SetPadding(0, 0, 0, 1),
NWidget(NWID_SPACER), SetFill(0, 1),
EndContainer(),
NWidget(WWT_LABEL, COLOUR_WHITE, WID_N_TITLE), SetFill(1, 1), SetMinimalSize(410, 20), SetDataTip(STR_EMPTY, STR_NULL),
EndContainer(),
NWidget(NWID_HORIZONTAL), SetPadding(0, 1, 1, 1),
NWidget(NWID_VERTICAL),
NWidget(WWT_EMPTY, COLOUR_WHITE, WID_N_MGR_FACE), SetMinimalSize(93, 119), SetPadding(2, 6, 2, 1),
NWidget(WWT_EMPTY, COLOUR_WHITE, WID_N_MGR_NAME), SetMinimalSize(93, 24), SetPadding(0, 0, 0, 1),
NWidget(NWID_SPACER), SetFill(0, 1),
EndContainer(),
NWidget(WWT_EMPTY, COLOUR_WHITE, WID_N_COMPANY_MSG), SetFill(1, 1), SetMinimalSize(328, 150),
EndContainer(),
EndContainer(),
};
static WindowDesc _company_news_desc(
WDP_MANUAL, nullptr, 0, 0,
WC_NEWS_WINDOW, WC_NONE,
0,
_nested_company_news_widgets, lengthof(_nested_company_news_widgets)
);
/* Thin news items. */
static const NWidgetPart _nested_thin_news_widgets[] = {
NWidget(WWT_PANEL, COLOUR_WHITE, WID_N_PANEL),
NWidget(NWID_HORIZONTAL), SetPadding(1, 1, 0, 1),
NWidget(WWT_CLOSEBOX, COLOUR_WHITE, WID_N_CLOSEBOX), SetPadding(0, 0, 0, 1),
NWidget(NWID_SPACER), SetFill(1, 0),
NWidget(NWID_VERTICAL),
NWidget(WWT_LABEL, COLOUR_WHITE, WID_N_DATE), SetDataTip(STR_DATE_LONG_SMALL, STR_NULL),
NWidget(NWID_SPACER), SetFill(0, 1),
EndContainer(),
EndContainer(),
NWidget(WWT_EMPTY, COLOUR_WHITE, WID_N_MESSAGE), SetMinimalSize(428, 48), SetFill(1, 0), SetPadding(0, 5, 0, 5),
NWidget(NWID_VIEWPORT, INVALID_COLOUR, WID_N_VIEWPORT), SetMinimalSize(426, 70), SetPadding(1, 2, 2, 2),
EndContainer(),
};
static WindowDesc _thin_news_desc(
WDP_MANUAL, nullptr, 0, 0,
WC_NEWS_WINDOW, WC_NONE,
0,
_nested_thin_news_widgets, lengthof(_nested_thin_news_widgets)
);
/* Small news items. */
static const NWidgetPart _nested_small_news_widgets[] = {
/* Caption + close box. The caption is no WWT_CAPTION as the window shall not be moveable and so on. */
NWidget(NWID_HORIZONTAL),
NWidget(WWT_CLOSEBOX, COLOUR_LIGHT_BLUE, WID_N_CLOSEBOX),
NWidget(WWT_EMPTY, COLOUR_LIGHT_BLUE, WID_N_CAPTION), SetFill(1, 0),
EndContainer(),
/* Main part */
NWidget(WWT_PANEL, COLOUR_LIGHT_BLUE, WID_N_HEADLINE),
NWidget(WWT_INSET, COLOUR_LIGHT_BLUE, WID_N_INSET), SetPadding(2, 2, 2, 2),
NWidget(NWID_VIEWPORT, INVALID_COLOUR, WID_N_VIEWPORT), SetPadding(1, 1, 1, 1), SetMinimalSize(274, 47), SetFill(1, 0),
EndContainer(),
NWidget(WWT_EMPTY, COLOUR_WHITE, WID_N_MESSAGE), SetMinimalSize(275, 20), SetFill(1, 0), SetPadding(0, 5, 0, 5),
EndContainer(),
};
static WindowDesc _small_news_desc(
WDP_MANUAL, nullptr, 0, 0,
WC_NEWS_WINDOW, WC_NONE,
0,
_nested_small_news_widgets, lengthof(_nested_small_news_widgets)
);
/**
* Window layouts for news items.
*/
static WindowDesc* _news_window_layout[] = {
&_thin_news_desc, ///< NF_THIN
&_small_news_desc, ///< NF_SMALL
&_normal_news_desc, ///< NF_NORMAL
&_vehicle_news_desc, ///< NF_VEHICLE
&_company_news_desc, ///< NF_COMPANY
};
WindowDesc* GetNewsWindowLayout(NewsFlag flags)
{
uint layout = GB(flags, NFB_WINDOW_LAYOUT, NFB_WINDOW_LAYOUT_COUNT);
assert(layout < lengthof(_news_window_layout));
return _news_window_layout[layout];
}
/**
* Per-NewsType data
*/
static NewsTypeData _news_type_data[] = {
/* name, age, sound, */
NewsTypeData("news_display.arrival_player", 60, SND_1D_APPLAUSE ), ///< NT_ARRIVAL_COMPANY
NewsTypeData("news_display.arrival_other", 60, SND_1D_APPLAUSE ), ///< NT_ARRIVAL_OTHER
NewsTypeData("news_display.accident", 90, SND_BEGIN ), ///< NT_ACCIDENT
NewsTypeData("news_display.company_info", 60, SND_BEGIN ), ///< NT_COMPANY_INFO
NewsTypeData("news_display.open", 90, SND_BEGIN ), ///< NT_INDUSTRY_OPEN
NewsTypeData("news_display.close", 90, SND_BEGIN ), ///< NT_INDUSTRY_CLOSE
NewsTypeData("news_display.economy", 30, SND_BEGIN ), ///< NT_ECONOMY
NewsTypeData("news_display.production_player", 30, SND_BEGIN ), ///< NT_INDUSTRY_COMPANY
NewsTypeData("news_display.production_other", 30, SND_BEGIN ), ///< NT_INDUSTRY_OTHER
NewsTypeData("news_display.production_nobody", 30, SND_BEGIN ), ///< NT_INDUSTRY_NOBODY
NewsTypeData("news_display.advice", 150, SND_BEGIN ), ///< NT_ADVICE
NewsTypeData("news_display.new_vehicles", 30, SND_1E_OOOOH ), ///< NT_NEW_VEHICLES
NewsTypeData("news_display.acceptance", 90, SND_BEGIN ), ///< NT_ACCEPTANCE
NewsTypeData("news_display.subsidies", 180, SND_BEGIN ), ///< NT_SUBSIDIES
NewsTypeData("news_display.general", 60, SND_BEGIN ), ///< NT_GENERAL
};
assert_compile(lengthof(_news_type_data) == NT_END);
/**
* Return the news display option.
* @return display options
*/
NewsDisplay NewsTypeData::GetDisplay() const
{
uint index;
const SettingDesc *sd = GetSettingFromName(this->name, &index);
assert(sd != nullptr);
void *ptr = GetVariableAddress(nullptr, &sd->save);
return (NewsDisplay)ReadValue(ptr, sd->save.conv);
}
/** Window class displaying a news item. */
struct NewsWindow : Window {
uint16 chat_height; ///< Height of the chat window.
uint16 status_height; ///< Height of the status bar window
const NewsItem *ni; ///< News item to display.
static int duration; ///< Remaining time for showing the current news message (may only be access while a news item is displayed).
GUITimer timer;
NewsWindow(WindowDesc *desc, const NewsItem *ni) : Window(desc), ni(ni)
{
NewsWindow::duration = 16650;
const Window *w = FindWindowByClass(WC_SEND_NETWORK_MSG);
this->chat_height = (w != nullptr) ? w->height : 0;
this->status_height = FindWindowById(WC_STATUS_BAR, 0)->height;
this->flags |= WF_DISABLE_VP_SCROLL;
this->timer.SetInterval(15);
this->CreateNestedTree();
/* For company news with a face we have a separate headline in param[0] */
if (desc == &_company_news_desc) this->GetWidget<NWidgetCore>(WID_N_TITLE)->widget_data = this->ni->params[0];
this->FinishInitNested(0);
/* Initialize viewport if it exists. */
NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(WID_N_VIEWPORT);
if (nvp != nullptr) {
nvp->InitializeViewport(this, ni->reftype1 == NR_VEHICLE ? 0x80000000 | ni->ref1 : GetReferenceTile(ni->reftype1, ni->ref1), ZOOM_LVL_NEWS);
if (this->ni->flags & NF_NO_TRANSPARENT) nvp->disp_flags |= ND_NO_TRANSPARENCY;
if ((this->ni->flags & NF_INCOLOUR) == 0) {
nvp->disp_flags |= ND_SHADE_GREY;
} else if (this->ni->flags & NF_SHADE) {
nvp->disp_flags |= ND_SHADE_DIMMED;
}
}
PositionNewsMessage(this);
}
void DrawNewsBorder(const Rect &r) const
{
GfxFillRect(r.left, r.top, r.right, r.bottom, PC_WHITE);
GfxFillRect(r.left, r.top, r.left, r.bottom, PC_BLACK);
GfxFillRect(r.right, r.top, r.right, r.bottom, PC_BLACK);
GfxFillRect(r.left, r.top, r.right, r.top, PC_BLACK);
GfxFillRect(r.left, r.bottom, r.right, r.bottom, PC_BLACK);
}
Point OnInitialPosition(int16 sm_width, int16 sm_height, int window_number) override
{
Point pt = { 0, _screen.height };
return pt;
}
void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize) override
{
StringID str = STR_NULL;
switch (widget) {
case WID_N_CAPTION: {
/* Caption is not a real caption (so that the window cannot be moved)
* thus it doesn't get the default sizing of a caption. */
Dimension d2 = GetStringBoundingBox(STR_NEWS_MESSAGE_CAPTION);
d2.height += WD_CAPTIONTEXT_TOP + WD_CAPTIONTEXT_BOTTOM;
*size = maxdim(*size, d2);
return;
}
case WID_N_MGR_FACE:
*size = maxdim(*size, GetSpriteSize(SPR_GRADIENT));
break;
case WID_N_MGR_NAME:
SetDParamStr(0, static_cast<const CompanyNewsInformation *>(this->ni->free_data)->president_name);
str = STR_JUST_RAW_STRING;
break;
case WID_N_MESSAGE:
CopyInDParam(0, this->ni->params, lengthof(this->ni->params));
str = this->ni->string_id;
break;
case WID_N_COMPANY_MSG:
str = this->GetCompanyMessageString();
break;
case WID_N_VEH_NAME:
case WID_N_VEH_TITLE:
str = this->GetNewVehicleMessageString(widget);
break;
case WID_N_VEH_INFO: {
assert(this->ni->reftype1 == NR_ENGINE);
EngineID engine = this->ni->ref1;
str = GetEngineInfoString(engine);
break;
}
default:
return; // Do nothing
}
/* Update minimal size with length of the multi-line string. */
Dimension d = *size;
d.width = (d.width >= padding.width) ? d.width - padding.width : 0;
d.height = (d.height >= padding.height) ? d.height - padding.height : 0;
d = GetStringMultiLineBoundingBox(str, d);
d.width += padding.width;
d.height += padding.height;
*size = maxdim(*size, d);
}
void SetStringParameters(int widget) const override
{
if (widget == WID_N_DATE) SetDParam(0, this->ni->date);
}
void DrawWidget(const Rect &r, int widget) const override
{
switch (widget) {
case WID_N_CAPTION:
DrawCaption(r, COLOUR_LIGHT_BLUE, this->owner, STR_NEWS_MESSAGE_CAPTION);
break;
case WID_N_PANEL:
this->DrawNewsBorder(r);
break;
case WID_N_MESSAGE:
CopyInDParam(0, this->ni->params, lengthof(this->ni->params));
DrawStringMultiLine(r.left, r.right, r.top, r.bottom, this->ni->string_id, TC_FROMSTRING, SA_CENTER);
break;
case WID_N_MGR_FACE: {
const CompanyNewsInformation *cni = (const CompanyNewsInformation*)this->ni->free_data;
DrawCompanyManagerFace(cni->face, cni->colour, r.left, r.top);
GfxFillRect(r.left, r.top, r.right, r.bottom, PALETTE_NEWSPAPER, FILLRECT_RECOLOUR);
break;
}
case WID_N_MGR_NAME: {
const CompanyNewsInformation *cni = (const CompanyNewsInformation*)this->ni->free_data;
SetDParamStr(0, cni->president_name);
DrawStringMultiLine(r.left, r.right, r.top, r.bottom, STR_JUST_RAW_STRING, TC_FROMSTRING, SA_CENTER);
break;
}
case WID_N_COMPANY_MSG:
DrawStringMultiLine(r.left, r.right, r.top, r.bottom, this->GetCompanyMessageString(), TC_FROMSTRING, SA_CENTER);
break;
case WID_N_VEH_BKGND:
GfxFillRect(r.left, r.top, r.right, r.bottom, PC_GREY);
break;
case WID_N_VEH_NAME:
case WID_N_VEH_TITLE:
DrawStringMultiLine(r.left, r.right, r.top, r.bottom, this->GetNewVehicleMessageString(widget), TC_FROMSTRING, SA_CENTER);
break;
case WID_N_VEH_SPR: {
assert(this->ni->reftype1 == NR_ENGINE);
EngineID engine = this->ni->ref1;
DrawVehicleEngine(r.left, r.right, (r.left + r.right) / 2, (r.top + r.bottom) / 2, engine, GetEnginePalette(engine, _local_company), EIT_PREVIEW);
GfxFillRect(r.left, r.top, r.right, r.bottom, PALETTE_NEWSPAPER, FILLRECT_RECOLOUR);
break;
}
case WID_N_VEH_INFO: {
assert(this->ni->reftype1 == NR_ENGINE);
EngineID engine = this->ni->ref1;
DrawStringMultiLine(r.left, r.right, r.top, r.bottom, GetEngineInfoString(engine), TC_FROMSTRING, SA_CENTER);
break;
}
}
}
void OnClick(Point pt, int widget, int click_count) override
{
switch (widget) {
case WID_N_CLOSEBOX:
NewsWindow::duration = 0;
delete this;
_forced_news = nullptr;
break;
case WID_N_CAPTION:
if (this->ni->reftype1 == NR_VEHICLE) {
const Vehicle *v = Vehicle::Get(this->ni->ref1);
ShowVehicleViewWindow(v);
}
break;
case WID_N_VIEWPORT:
break; // Ignore clicks
default:
if (this->ni->reftype1 == NR_VEHICLE) {
const Vehicle *v = Vehicle::Get(this->ni->ref1);
ScrollMainWindowTo(v->x_pos, v->y_pos, v->z_pos);
} else {
TileIndex tile1 = GetReferenceTile(this->ni->reftype1, this->ni->ref1);
TileIndex tile2 = GetReferenceTile(this->ni->reftype2, this->ni->ref2);
if (_ctrl_pressed) {
if (tile1 != INVALID_TILE) ShowExtraViewPortWindow(tile1);
if (tile2 != INVALID_TILE) ShowExtraViewPortWindow(tile2);
} else {
if ((tile1 == INVALID_TILE || !ScrollMainWindowToTile(tile1)) && tile2 != INVALID_TILE) {
ScrollMainWindowToTile(tile2);
}
}
}
break;
}
}
EventState OnKeyPress(WChar key, uint16 keycode) override
{
if (keycode == WKC_SPACE) {
/* Don't continue. */
delete this;
return ES_HANDLED;
}
return ES_NOT_HANDLED;
}
/**
* Some data on this window has become invalid.
* @param data Information about the changed data.
* @param gui_scope Whether the call is done from GUI scope. You may not do everything when not in GUI scope. See #InvalidateWindowData() for details.
*/
void OnInvalidateData(int data = 0, bool gui_scope = true) override
{
if (!gui_scope) return;
/* The chatbar has notified us that is was either created or closed */
int newtop = this->top + this->chat_height - data;
this->chat_height = data;
this->SetWindowTop(newtop);
}
void OnRealtimeTick(uint delta_ms) override
{
int count = this->timer.CountElapsed(delta_ms);
if (count > 0) {
/* Scroll up newsmessages from the bottom */
int newtop = max(this->top - 2 * count, _screen.height - this->height - this->status_height - this->chat_height);
this->SetWindowTop(newtop);
}
/* Decrement the news timer. We don't need to action an elapsed event here,
* so no need to use TimerElapsed(). */
if (NewsWindow::duration > 0) NewsWindow::duration -= delta_ms;
}
private:
/**
* Moves the window to a new #top coordinate. Makes screen dirty where needed.
* @param newtop new top coordinate
*/
void SetWindowTop(int newtop)
{
if (this->top == newtop) return;
int mintop = min(newtop, this->top);
int maxtop = max(newtop, this->top);
if (this->viewport != nullptr) this->viewport->top += newtop - this->top;
this->top = newtop;
SetDirtyBlocks(this->left, mintop, this->left + this->width, maxtop + this->height);
}
StringID GetCompanyMessageString() const
{
/* Company news with a face have a separate headline, so the normal message is shifted by two params */
CopyInDParam(0, this->ni->params + 2, lengthof(this->ni->params) - 2);
return this->ni->params[1];
}
StringID GetNewVehicleMessageString(int widget) const
{
assert(this->ni->reftype1 == NR_ENGINE);
EngineID engine = this->ni->ref1;
switch (widget) {
case WID_N_VEH_TITLE:
SetDParam(0, GetEngineCategoryName(engine));
return STR_NEWS_NEW_VEHICLE_NOW_AVAILABLE;
case WID_N_VEH_NAME:
SetDParam(0, engine);
return STR_NEWS_NEW_VEHICLE_TYPE;
default:
NOT_REACHED();
}
}
};
/* static */ int NewsWindow::duration = 0; // Instance creation.
/** Open up an own newspaper window for the news item */
static void ShowNewspaper(const NewsItem *ni)
{
SoundFx sound = _news_type_data[ni->type].sound;
if (sound != 0 && _settings_client.sound.news_full) SndPlayFx(sound);
new NewsWindow(GetNewsWindowLayout(ni->flags), ni);
}
/** Show news item in the ticker */
static void ShowTicker(const NewsItem *ni)
{
if (_settings_client.sound.news_ticker) SndPlayFx(SND_16_MORSE);
_statusbar_news_item = ni;
InvalidateWindowData(WC_STATUS_BAR, 0, SBI_SHOW_TICKER);
}
/** Initialize the news-items data structures */
void InitNewsItemStructs()
{
for (NewsItem *ni = _oldest_news; ni != nullptr; ) {
NewsItem *next = ni->next;
delete ni;
ni = next;
}
_total_news = 0;
_oldest_news = nullptr;
_latest_news = nullptr;
_forced_news = nullptr;
_current_news = nullptr;
_statusbar_news_item = nullptr;
NewsWindow::duration = 0;
}
/**
* Are we ready to show another ticker item?
* Only if nothing is in the newsticker is displayed
*/
static bool ReadyForNextTickerItem()
{
const NewsItem *ni = _statusbar_news_item;
if (ni == nullptr) return true;
/* Ticker message
* Check if the status bar message is still being displayed? */
if (IsNewsTickerShown()) return false;
return true;
}
/**
* Are we ready to show another news item?
* Only if no newspaper is displayed
*/
static bool ReadyForNextNewsItem()
{
const NewsItem *ni = _forced_news == nullptr ? _current_news : _forced_news;
if (ni == nullptr) return true;
/* neither newsticker nor newspaper are running */
return (NewsWindow::duration <= 0 || FindWindowById(WC_NEWS_WINDOW, 0) == nullptr);
}
/** Move to the next ticker item */
static void MoveToNextTickerItem()
{
InvalidateWindowData(WC_STATUS_BAR, 0, SBI_NEWS_DELETED); // invalidate the statusbar
/* if we're not at the last item, then move on */
while (_statusbar_news_item != _latest_news) {
_statusbar_news_item = (_statusbar_news_item == nullptr) ? _oldest_news : _statusbar_news_item->next;
const NewsItem *ni = _statusbar_news_item;
const NewsType type = ni->type;
/* check the date, don't show too old items */
if (_date - _news_type_data[type].age > ni->date) continue;
switch (_news_type_data[type].GetDisplay()) {
default: NOT_REACHED();
case ND_OFF: // Off - show nothing only a small reminder in the status bar
InvalidateWindowData(WC_STATUS_BAR, 0, SBI_SHOW_REMINDER);
break;
case ND_SUMMARY: // Summary - show ticker
ShowTicker(ni);
break;
case ND_FULL: // Full - show newspaper, skipped here
continue;
}
return;
}
}
/** Move to the next news item */
static void MoveToNextNewsItem()
{
DeleteWindowById(WC_NEWS_WINDOW, 0); // close the newspapers window if shown
_forced_news = nullptr;
/* if we're not at the last item, then move on */
while (_current_news != _latest_news) {
_current_news = (_current_news == nullptr) ? _oldest_news : _current_news->next;
const NewsItem *ni = _current_news;
const NewsType type = ni->type;
/* check the date, don't show too old items */
if (_date - _news_type_data[type].age > ni->date) continue;
switch (_news_type_data[type].GetDisplay()) {
default: NOT_REACHED();
case ND_OFF: // Off - show nothing only a small reminder in the status bar, skipped here
continue;
case ND_SUMMARY: // Summary - show ticker, skipped here
continue;
case ND_FULL: // Full - show newspaper
ShowNewspaper(ni);
break;
}
}
}
/**
* Add a new newsitem to be shown.
* @param string String to display
* @param type news category
* @param flags display flags for the news
* @param reftype1 Type of ref1
* @param ref1 Reference 1 to some object: Used for a possible viewport, scrolling after clicking on the news, and for deleteing the news when the object is deleted.
* @param reftype2 Type of ref2
* @param ref2 Reference 2 to some object: Used for scrolling after clicking on the news, and for deleteing the news when the object is deleted.
* @param free_data Pointer to data that must be freed once the news message is cleared
*
* @see NewsSubtype
*/
void AddNewsItem(StringID string, NewsType type, NewsFlag flags, NewsReferenceType reftype1, uint32 ref1, NewsReferenceType reftype2, uint32 ref2, void *free_data)
{
if (_game_mode == GM_MENU) return;
/* Create new news item node */
NewsItem *ni = new NewsItem;
ni->string_id = string;
ni->type = type;
ni->flags = flags;
/* show this news message in colour? */
if (_cur_year >= _settings_client.gui.coloured_news_year) ni->flags |= NF_INCOLOUR;
ni->reftype1 = reftype1;
ni->reftype2 = reftype2;
ni->ref1 = ref1;
ni->ref2 = ref2;
ni->free_data = free_data;
ni->date = _date;
CopyOutDParam(ni->params, 0, lengthof(ni->params));
if (_total_news++ == 0) {
assert(_oldest_news == nullptr);
_oldest_news = ni;
ni->prev = nullptr;
} else {
assert(_latest_news->next == nullptr);
_latest_news->next = ni;
ni->prev = _latest_news;
}
ni->next = nullptr;
_latest_news = ni;
SetWindowDirty(WC_MESSAGE_HISTORY, 0);
}
/**
* Create a new custom news item.
* @param tile unused
* @param flags type of operation
* @param p1 various bitstuffed elements
* - p1 = (bit 0 - 7) - NewsType of the message.
* - p1 = (bit 8 - 15) - NewsReferenceType of first reference.
* - p1 = (bit 16 - 23) - Company this news message is for.
* @param p2 First reference of the news message.
* @param text The text of the news message.
* @return the cost of this operation or an error
*/
CommandCost CmdCustomNewsItem(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
if (_current_company != OWNER_DEITY) return CMD_ERROR;
NewsType type = (NewsType)GB(p1, 0, 8);
NewsReferenceType reftype1 = (NewsReferenceType)GB(p1, 8, 8);
CompanyID company = (CompanyID)GB(p1, 16, 8);
if (company != INVALID_OWNER && !Company::IsValidID(company)) return CMD_ERROR;
if (type >= NT_END) return CMD_ERROR;
if (StrEmpty(text)) return CMD_ERROR;
switch (reftype1) {
case NR_NONE: break;
case NR_TILE:
if (!IsValidTile(p2)) return CMD_ERROR;
break;
case NR_VEHICLE:
if (!Vehicle::IsValidID(p2)) return CMD_ERROR;
break;
case NR_STATION:
if (!Station::IsValidID(p2)) return CMD_ERROR;
break;
case NR_INDUSTRY:
if (!Industry::IsValidID(p2)) return CMD_ERROR;
break;
case NR_TOWN:
if (!Town::IsValidID(p2)) return CMD_ERROR;
break;
case NR_ENGINE:
if (!Engine::IsValidID(p2)) return CMD_ERROR;
break;
default: return CMD_ERROR;
}
if (company != INVALID_OWNER && company != _local_company) return CommandCost();
if (flags & DC_EXEC) {
char *news = stredup(text);
SetDParamStr(0, news);
AddNewsItem(STR_NEWS_CUSTOM_ITEM, type, NF_NORMAL, reftype1, p2, NR_NONE, UINT32_MAX, news);
}
return CommandCost();
}
/** Delete a news item from the queue */
static void DeleteNewsItem(NewsItem *ni)
{
/* Delete the news from the news queue. */
if (ni->prev != nullptr) {
ni->prev->next = ni->next;
} else {
assert(_oldest_news == ni);
_oldest_news = ni->next;
}
if (ni->next != nullptr) {
ni->next->prev = ni->prev;
} else {
assert(_latest_news == ni);
_latest_news = ni->prev;
}
_total_news--;
if (_forced_news == ni || _current_news == ni) {
/* When we're the current news, go to the previous item first;
* we just possibly made that the last news item. */
if (_current_news == ni) _current_news = ni->prev;
/* About to remove the currently forced item (shown as newspapers) ||
* about to remove the currently displayed item (newspapers) */
MoveToNextNewsItem();
}
if (_statusbar_news_item == ni) {
/* When we're the current news, go to the previous item first;
* we just possibly made that the last news item. */
_statusbar_news_item = ni->prev;
/* About to remove the currently displayed item (ticker, or just a reminder) */
MoveToNextTickerItem();
}
delete ni;
SetWindowDirty(WC_MESSAGE_HISTORY, 0);
}
/**
* Delete a news item type about a vehicle.
* When the news item type is INVALID_STRING_ID all news about the vehicle gets deleted.
* @param vid The vehicle to remove the news for.
* @param news The news type to remove.
*/
void DeleteVehicleNews(VehicleID vid, StringID news)
{
NewsItem *ni = _oldest_news;
while (ni != nullptr) {
NewsItem *next = ni->next;
if (((ni->reftype1 == NR_VEHICLE && ni->ref1 == vid) || (ni->reftype2 == NR_VEHICLE && ni->ref2 == vid)) &&
(news == INVALID_STRING_ID || ni->string_id == news)) {
DeleteNewsItem(ni);
}
ni = next;
}
}
/**
* Remove news regarding given station so there are no 'unknown station now accepts Mail'
* or 'First train arrived at unknown station' news items.
* @param sid station to remove news about
*/
void DeleteStationNews(StationID sid)
{
NewsItem *ni = _oldest_news;
while (ni != nullptr) {
NewsItem *next = ni->next;
if ((ni->reftype1 == NR_STATION && ni->ref1 == sid) || (ni->reftype2 == NR_STATION && ni->ref2 == sid)) {
DeleteNewsItem(ni);
}
ni = next;
}
}
/**
* Remove news regarding given industry
* @param iid industry to remove news about
*/
void DeleteIndustryNews(IndustryID iid)
{
NewsItem *ni = _oldest_news;
while (ni != nullptr) {
NewsItem *next = ni->next;
if ((ni->reftype1 == NR_INDUSTRY && ni->ref1 == iid) || (ni->reftype2 == NR_INDUSTRY && ni->ref2 == iid)) {
DeleteNewsItem(ni);
}
ni = next;
}
}
/**
* Remove engine announcements for invalid engines.
*/
void DeleteInvalidEngineNews()
{
NewsItem *ni = _oldest_news;
while (ni != nullptr) {
NewsItem *next = ni->next;
if ((ni->reftype1 == NR_ENGINE && (!Engine::IsValidID(ni->ref1) || !Engine::Get(ni->ref1)->IsEnabled())) ||
(ni->reftype2 == NR_ENGINE && (!Engine::IsValidID(ni->ref2) || !Engine::Get(ni->ref2)->IsEnabled()))) {
DeleteNewsItem(ni);
}
ni = next;
}
}
static void RemoveOldNewsItems()
{
NewsItem *next;
for (NewsItem *cur = _oldest_news; _total_news > MIN_NEWS_AMOUNT && cur != nullptr; cur = next) {
next = cur->next;
if (_date - _news_type_data[cur->type].age * _settings_client.gui.news_message_timeout > cur->date) DeleteNewsItem(cur);
}
}
/**
* Report a change in vehicle IDs (due to autoreplace) to affected vehicle news.
* @note Viewports of currently displayed news is changed via #ChangeVehicleViewports
* @param from_index the old vehicle ID
* @param to_index the new vehicle ID
*/
void ChangeVehicleNews(VehicleID from_index, VehicleID to_index)
{
for (NewsItem *ni = _oldest_news; ni != nullptr; ni = ni->next) {
if (ni->reftype1 == NR_VEHICLE && ni->ref1 == from_index) ni->ref1 = to_index;
if (ni->reftype2 == NR_VEHICLE && ni->ref2 == from_index) ni->ref2 = to_index;
if (ni->flags & NF_VEHICLE_PARAM0 && ni->params[0] == from_index) ni->params[0] = to_index;
}
}
void NewsLoop()
{
/* no news item yet */
if (_total_news == 0) return;
/* There is no status bar, so no reason to show news;
* especially important with the end game screen when
* there is no status bar but possible news. */
if (FindWindowById(WC_STATUS_BAR, 0) == nullptr) return;
static byte _last_clean_month = 0;
if (_last_clean_month != _cur_month) {
RemoveOldNewsItems();
_last_clean_month = _cur_month;
}
if (ReadyForNextTickerItem()) MoveToNextTickerItem();
if (ReadyForNextNewsItem()) MoveToNextNewsItem();
}
/** Do a forced show of a specific message */
static void ShowNewsMessage(const NewsItem *ni)
{
assert(_total_news != 0);
/* Delete the news window */
DeleteWindowById(WC_NEWS_WINDOW, 0);
/* setup forced news item */
_forced_news = ni;
if (_forced_news != nullptr) {
DeleteWindowById(WC_NEWS_WINDOW, 0);
ShowNewspaper(ni);
}
}
/** Show previous news item */
void ShowLastNewsMessage()
{
const NewsItem *ni = nullptr;
if (_total_news == 0) {
return;
} else if (_forced_news == nullptr) {
/* Not forced any news yet, show the current one, unless a news window is
* open (which can only be the current one), then show the previous item */
if (_current_news == nullptr) {
/* No news were shown yet resp. the last shown one was already deleted.
* Threat this as if _forced_news reached _oldest_news; so, wrap around and start anew with the latest. */
ni = _latest_news;
} else {
const Window *w = FindWindowById(WC_NEWS_WINDOW, 0);
ni = (w == nullptr || (_current_news == _oldest_news)) ? _current_news : _current_news->prev;
}
} else if (_forced_news == _oldest_news) {
/* We have reached the oldest news, start anew with the latest */
ni = _latest_news;
} else {
/* 'Scrolling' through news history show each one in turn */
ni = _forced_news->prev;
}