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/* $Id$ */

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/** @file news_gui.cpp */

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#include "stdafx.h"

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#include "openttd.h"

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#include "functions.h"

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#include "strings.h"

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#include "table/sprites.h"

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#include "table/strings.h"

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#include "window.h"

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#include "gui.h"

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#include "viewport.h"

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#include "gfx.h"

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#include "news.h"

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#include "vehicle.h"

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#include "sound.h"

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#include "variables.h"

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#include "date.h"

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#include "string.h"

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    22

/* News system

    23

 * News system is realized as a FIFO queue (in an array)

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 * The positions in the queue can't be rearranged, we only access

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 * the array elements through pointers to the elements. Once the

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 * array is full, the oldest entry (_oldest_news) is being overwritten

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 * by the newest (_latest news).

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 *

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 * oldest                   current   lastest

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 *  |                          |         |

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 * [O------------F-------------C---------L           ]

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 *               |

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 *            forced

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 *

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 * Of course by using an array we can have situations like

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 *

    37

 * [----L          O-----F---------C-----------------]

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 * This is where we have wrapped around the array and have

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 * (MAX_NEWS - O) + L news items

    40

 */

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    42

#define MAX_NEWS 30

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#define NB_WIDG_PER_SETTING 4

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    45

typedef byte NewsID;

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#define INVALID_NEWS 255

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    48

static NewsItem _news_items[MAX_NEWS];

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static NewsID _current_news = INVALID_NEWS; // points to news item that should be shown next

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static NewsID _oldest_news = 0;    // points to first item in fifo queue

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static NewsID _latest_news = INVALID_NEWS;  // points to last item in fifo queue

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/* if the message being shown was forced by the user, its index is stored in

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 * _forced_news. forced_news is INVALID_NEWS otherwise.

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 * (Users can force messages through history or "last message") */

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static NewsID _forced_news = INVALID_NEWS;

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    57

static byte _total_news = 0; // total news count

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    59

void DrawNewsNewVehicleAvail(BaseWindow *w);

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void DrawNewsBankrupcy(BaseWindow *w);

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static void MoveToNextItem();

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    63

StringID GetNewsStringNewVehicleAvail(const NewsItem *ni);

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StringID GetNewsStringBankrupcy(const NewsItem *ni);

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static DrawNewsCallbackProc * const _draw_news_callback[] = {

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	DrawNewsNewVehicleAvail,  //< DNC_VEHICLEAVAIL

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	DrawNewsBankrupcy,        //< DNC_BANKRUPCY

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};

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    71

extern GetNewsStringCallbackProc * const _get_news_string_callback[];

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GetNewsStringCallbackProc * const _get_news_string_callback[] = {

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	GetNewsStringNewVehicleAvail,  ///< DNC_VEHICLEAVAIL

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	GetNewsStringBankrupcy,        ///< DNC_BANKRUPCY

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};

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    77

void InitNewsItemStructs()

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{

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	memset(_news_items, 0, sizeof(_news_items));

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	_current_news = INVALID_NEWS;

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	_oldest_news = 0;

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	_latest_news = INVALID_NEWS;

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	_forced_news = INVALID_NEWS;

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	_total_news = 0;

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}

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    87

void DrawNewsBorder(const BaseWindow *w)

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{

    89

	int left = 0;

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	int right = w->Width() - 1;

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	int top = 0;

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	int bottom = w->Height() - 1;

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    94

	GfxFillRect(left, top, right, bottom, 0xF);

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    96

	GfxFillRect(left, top, left, bottom, 0xD7);

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	GfxFillRect(right, top, right, bottom, 0xD7);

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	GfxFillRect(left, top, right, top, 0xD7);

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	GfxFillRect(left, bottom, right, bottom, 0xD7);

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   101

	DrawString(left + 2, top + 1, STR_00C6, 0);

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}

   103

   104

static void NewsWindowProc(BaseWindow *w, WindowEvent *e)

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{

   106

	switch (e->event) {

   107

	case WE_CREATE: { // If chatbar is open at creation time, we need to go above it

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		const BaseWindow *w1 = BaseWindow::FindById(WC_SEND_NETWORK_MSG, 0);

   109

		w->message.msg = (w1 != NULL) ? w1->Height() : 0;

   110

	} break;

   111

   112

	case WE_PAINT: {

   113

		const NewsItem *ni = WP(w, news_d).ni;

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		ViewPort *vp;

   115

   116

		switch (ni->display_mode) {

   117

			case NM_NORMAL:

   118

			case NM_THIN: {

   119

				DrawNewsBorder(w);

   120

   121

				DrawString(2, 1, STR_00C6, 0);

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   123

				SetDParam(0, ni->date);

   124

				DrawStringRightAligned(428, 1, STR_01FF, 0);

   125

   126

				if (!(ni->flags & NF_VIEWPORT)) {

   127

					COPY_IN_DPARAM(0, ni->params, lengthof(ni->params));

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					DrawStringMultiCenter(215, ni->display_mode == NM_NORMAL ? 76 : 56,

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						ni->string_id, w->Width() - 4);

   130

				} else {

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					/* Back up transparency options to draw news view */

   132

					byte to_backup = _transparent_opt;

   133

					_transparent_opt = 0;

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					w->DrawViewport();

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					_transparent_opt = to_backup;

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   137

					/* Shade the viewport into gray, or color*/

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					vp = w->viewport;

   139

					GfxFillRect(vp->left - w->Left(), vp->top - w->Top(),

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						vp->left - w->Left() + vp->width - 1, vp->top - w->Top() + vp->height - 1,

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						(ni->flags & NF_INCOLOR ? PALETTE_TO_TRANSPARENT : PALETTE_TO_STRUCT_GREY) | (1 << USE_COLORTABLE)

   142

					);

   143

   144

					COPY_IN_DPARAM(0, ni->params, lengthof(ni->params));

   145

					DrawStringMultiCenter(w->Width() / 2, 20, ni->string_id, w->Width() - 4);

   146

				}

   147

				break;

   148

			}

   149

   150

			case NM_CALLBACK: {

   151

				_draw_news_callback[ni->callback](w);

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				break;

   153

			}

   154

   155

			default: {

   156

				w->DrawWidgets();

   157

				if (!(ni->flags & NF_VIEWPORT)) {

   158

					COPY_IN_DPARAM(0, ni->params, lengthof(ni->params));

   159

					DrawStringMultiCenter(140, 38, ni->string_id, 276);

   160

				} else {

   161

					w->DrawViewport();

   162

					COPY_IN_DPARAM(0, ni->params, lengthof(ni->params));

   163

					DrawStringMultiCenter(w->Width() / 2, w->Height() - 16, ni->string_id, w->Width() - 4);

   164

				}

   165

				break;

   166

			}

   167

		}

   168

	} break;

   169

   170

	case WE_CLICK: {

   171

		switch (e->we.click.widget) {

   172

		case 1: {

   173

			NewsItem *ni = WP(w, news_d).ni;

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			w->Close();

   175

			ni->duration = 0;

   176

			_forced_news = INVALID_NEWS;

   177

		} break;

   178

		case 0: {

   179

			NewsItem *ni = WP(w, news_d).ni;

   180

			if (ni->flags & NF_VEHICLE) {

   181

				Vehicle *v = GetVehicle(ni->data_a);

   182

				ScrollMainWindowTo(v->x_pos, v->y_pos);

   183

			} else if (ni->flags & NF_TILE) {

   184

				if (!ScrollMainWindowToTile(ni->data_a) && ni->data_b != 0)

   185

					ScrollMainWindowToTile(ni->data_b);

   186

			}

   187

		} break;

   188

		}

   189

	} break;

   190

   191

	case WE_KEYPRESS:

   192

		if (e->we.keypress.keycode == WKC_SPACE) {

   193

			/* Don't continue. */

   194

			e->we.keypress.cont = false;

   195

			w->Close();

   196

		}

   197

		break;

   198

   199

	case WE_MESSAGE: // The chatbar has notified us that is was either created or closed

   200

		switch (e->we.message.msg) {

   201

			case WE_CREATE: w->message.msg = e->we.message.wparam; break;

   202

			case WE_DESTROY: w->message.msg = 0; break;

   203

		}

   204

		break;

   205

   206

	case WE_TICK: { // Scroll up newsmessages from the bottom in steps of 4 pixels

   207

		int y = max(w->Top() - 4, _screen.height - w->Height() - 12 - w->message.msg);

   208

		if (y == w->Top()) return;

   209

   210

		if (w->viewport != NULL)

   211

			w->viewport->top += y - w->Top();

   212

   213

		int16 diff = delta(w->Top(), (int16)y);

   214

		w->SetTop(y);

   215

   216

		SetDirtyBlocks(w->Left(), w->Top() - diff, w->Left() + w->Width(), w->Top() + w->Height());

   217

	} break;

   218

	}

   219

}

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   221

/** Return the correct index in the pseudo-fifo

   222

 * queue and deals with overflows when increasing the index */

   223

static inline NewsID increaseIndex(NewsID i)

   224

{

   225

	assert(i != INVALID_NEWS);

   226

	return (i + 1) % MAX_NEWS;

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}

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   229

/** Return the correct index in the pseudo-fifo

   230

 * queue and deals with overflows when decreasing the index */

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static inline NewsID decreaseIndex(NewsID i)

   232

{

   233

	assert(i != INVALID_NEWS);

   234

	return (i + MAX_NEWS - 1) % MAX_NEWS;

   235

}

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   237

/** Add a new newsitem to be shown.

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 * @param string String to display, can have special values based on parameter 'flags'

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 * @param flags various control bits that will show various news-types. See macro NEWS_FLAGS()

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 * @param data_a news-specific value based on news type

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 * @param data_b news-specific value based on news type

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 * If the display mode is NM_CALLBACK special news is shown and parameter

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 * DNC_TRAINAVAIL, DNC_ROADAVAIL, DNC_SHIPAVAIL, DNC_AIRCRAFTAVAIL: StringID is

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 * DNC_BANKRUPCY: bytes 0-3 of StringID contains the player that is in trouble,

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 * @see NewsMode

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 * @see NewsFlags

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 * @see NewsType

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 * @see NewsCallback */

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void AddNewsItem(StringID string, uint32 flags, uint data_a, uint data_b)

   258

{

   259

	NewsID l_news;

   260

   261

	if (_game_mode == GM_MENU) return;

   262

   263

	/* check the rare case that the oldest (to be overwritten) news item is open */

   264

	if (_total_news == MAX_NEWS && (_oldest_news == _current_news || _oldest_news == _forced_news))

   265

		MoveToNextItem();

   266

   267

	if (_total_news < MAX_NEWS) _total_news++;

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   269

	/* Increase _latest_news. If we have no news yet, use _oldest news as an

   270

	 * index. We cannot use 0 as _oldest_news can jump around due to

   271

	 * DeleteVehicleNews */

   272

	l_news = _latest_news;

   273

	_latest_news = (_latest_news == INVALID_NEWS) ? _oldest_news : increaseIndex(_latest_news);

   274

   275

	/* If the fifo-buffer is full, overwrite the oldest entry */

   276

	if (l_news != INVALID_NEWS && _latest_news == _oldest_news) {

   277

		assert(_total_news == MAX_NEWS);

   278

		_oldest_news = increaseIndex(_oldest_news);

   279

	}

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   281

	/*DEBUG(misc, 0, "+cur %3d, old %2d, lat %3d, for %3d, tot %2d",

   282

	  _current_news, _oldest_news, _latest_news, _forced_news, _total_news);*/

   283

   284

	/* Add news to _latest_news */

   285

	{

   286

		BaseWindow *w;

   287

		NewsItem *ni = &_news_items[_latest_news];

   288

		memset(ni, 0, sizeof(*ni));

   289

   290

		ni->string_id = string;

   291

		ni->display_mode = (byte)flags;

   292

		ni->flags = (byte)(flags >> 8);

   293

   294

		/* show this news message in color? */

   295

		if (_cur_year >= _patches.colored_news_year) ni->flags |= NF_INCOLOR;

   296

   297

		ni->type = (byte)(flags >> 16);

   298

		ni->callback = (byte)(flags >> 24);

   299

		ni->data_a = data_a;

   300

		ni->data_b = data_b;

   301

		ni->date = _date;

   302

		COPY_OUT_DPARAM(ni->params, 0, lengthof(ni->params));

   303

   304

		w = BaseWindow::FindById(WC_MESSAGE_HISTORY, 0);

   305

		if (w == NULL) return;

   306

		w->SetDirty();

   307

		w->vscroll.count = _total_news;

   308

	}

   309

}

   310

   311

   312

/* Don't show item if it's older than x days, corresponds with NewsType in news.h */

   313

static const byte _news_items_age[] = {60, 60, 90, 60, 90, 30, 150, 30, 90, 180};

   314

   315

static const OldWidget _news_type13_widgets[] = {

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{      WWT_PANEL,   RESIZE_NONE,    15,     0,   429,     0,   169, 0x0, STR_NULL},

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{      WWT_PANEL,   RESIZE_NONE,    15,     0,    10,     0,    11, 0x0, STR_NULL},

   318

{   WIDGETS_END},

   319

};

   320

   321

static WindowDesc _news_type13_desc = {

   322

	WDP_CENTER, 476, 430, 170,

   323

	WC_NEWS_WINDOW, WC_NONE,

   324

	WDF_DEF_WIDGET,

   325

	_news_type13_widgets,

   326

	NewsWindowProc

   327

};

   328

   329

static const OldWidget _news_type2_widgets[] = {

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{      WWT_PANEL,   RESIZE_NONE,    15,     0,   429,     0,   129, 0x0, STR_NULL},

   331

{      WWT_PANEL,   RESIZE_NONE,    15,     0,    10,     0,    11, 0x0, STR_NULL},

   332

{   WIDGETS_END},

   333

};

   334

   335

static WindowDesc _news_type2_desc = {

   336

	WDP_CENTER, 476, 430, 130,

   337

	WC_NEWS_WINDOW, WC_NONE,

   338

	WDF_DEF_WIDGET,

   339

	_news_type2_widgets,

   340

	NewsWindowProc

   341

};

   342

   343

static const OldWidget _news_type0_widgets[] = {

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{      WWT_PANEL,   RESIZE_NONE,     5,     0,   279,    14,    86, 0x0,              STR_NULL},

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{   WWT_CLOSEBOX,   RESIZE_NONE,     5,     0,    10,     0,    13, STR_00C5,         STR_018B_CLOSE_WINDOW},

   346

{    WWT_CAPTION,   RESIZE_NONE,     5,    11,   279,     0,    13, STR_012C_MESSAGE, STR_NULL},

   347

{      WWT_INSET,   RESIZE_NONE,     5,     2,   277,    16,    64, 0x0,              STR_NULL},

   348

{   WIDGETS_END},

   349

};

   350

   351

static WindowDesc _news_type0_desc = {

   352

	WDP_CENTER, 476, 280, 87,

   353

	WC_NEWS_WINDOW, WC_NONE,

   354

	WDF_DEF_WIDGET,

   355

	_news_type0_widgets,

   356

	NewsWindowProc

   357

};

   358

   359

static const SoundFx _news_sounds[NT_END] = {

   360

	SND_1D_APPLAUSE,

   361

	SND_1D_APPLAUSE,

   362

	SND_BEGIN,

   363

	SND_BEGIN,

   364

	SND_BEGIN,

   365

	SND_BEGIN,

   366

	SND_BEGIN,

   367

	SND_1E_OOOOH,

   368

	SND_BEGIN,

   369

	SND_BEGIN,

   370

	SND_BEGIN,

   371

};

   372

   373

const char *_news_display_name[NT_END] = {

   374

	"arrival_player",

   375

	"arrival_other",

   376

	"accident",

   377

	"company_info",

   378

	"openclose",

   379

	"economy",

   380

	"advice",

   381

	"new_vehicles",

   382

	"acceptance",

   383

	"subsidies",

   384

	"general",

   385

};

   386

   387

/** Get the value of an item of the news-display settings. This is

   388

 * a little tricky since on/off/summary must use 2 bits to store the value

   389

 * @param item the item whose value is requested

   390

 * @return return the found value which is between 0-2

   391

 */

   392

static inline byte GetNewsDisplayValue(byte item)

   393

{

   394

	assert(item < NT_END && GB(_news_display_opt, item * 2, 2) <= 2);

   395

	return GB(_news_display_opt, item * 2, 2);

   396

}

   397

   398

/** Set the value of an item in the news-display settings. This is

   399

 * a little tricky since on/off/summary must use 2 bits to store the value

   400

 * @param item the item whose value is being set

   401

 * @param val new value

   402

 */

   403

static inline void SetNewsDisplayValue(byte item, byte val)

   404

{

   405

	assert(item < NT_END && val <= 2);

   406

	SB(_news_display_opt, item * 2, 2, val);

   407

}

   408

   409

/* open up an own newspaper window for the news item */

   410

static void ShowNewspaper(NewsItem *ni)

   411

{

   412

	BaseWindow *w;

   413

	SoundFx sound;

   414

	int top;

   415

	ni->flags &= ~NF_FORCE_BIG;

   416

	ni->duration = 555;

   417

   418

	sound = _news_sounds[ni->type];

   419

	if (sound != 0) SndPlayFx(sound);

   420

   421

	top = _screen.height;

   422

	switch (ni->display_mode) {

   423

		case NM_NORMAL:

   424

		case NM_CALLBACK: {

   425

			_news_type13_desc.top = top;

   426

			w = BaseWindow::Allocate(&_news_type13_desc);

   427

			if (ni->flags & NF_VIEWPORT)

   428

				AssignWindowViewport(w, 2, 58, 0x1AA, 0x6E,

   429

					ni->data_a | (ni->flags & NF_VEHICLE ? 0x80000000 : 0), 0);

   430

			break;

   431

		}

   432

   433

		case NM_THIN: {

   434

			_news_type2_desc.top = top;

   435

			w = BaseWindow::Allocate(&_news_type2_desc);

   436

			if (ni->flags & NF_VIEWPORT)

   437

				AssignWindowViewport(w, 2, 58, 0x1AA, 0x46,

   438

					ni->data_a | (ni->flags & NF_VEHICLE ? 0x80000000 : 0), 0);

   439

			break;

   440

		}

   441

   442

		default: {

   443

			_news_type0_desc.top = top;

   444

			w = BaseWindow::Allocate(&_news_type0_desc);

   445

			if (ni->flags & NF_VIEWPORT)

   446

				AssignWindowViewport(w, 3, 17, 0x112, 0x2F,

   447

					ni->data_a | (ni->flags & NF_VEHICLE ? 0x80000000 : 0), 0);

   448

			break;

   449

		}

   450

	}

   451

   452

	/*DEBUG(misc, 0, " cur %3d, old %2d, lat %3d, for %3d, tot %2d",

   453

	  _current_news, _oldest_news, _latest_news, _forced_news, _total_news);*/

   454

   455

	WP(w, news_d).ni = &_news_items[_forced_news == INVALID_NEWS ? _current_news : _forced_news];

   456

	w->flags4 |= WF_DISABLE_VP_SCROLL;

   457

}

   458

   459

/* show news item in the ticker */

   460

static void ShowTicker(const NewsItem *ni)

   461

{

   462

	BaseWindow *w;

   463

   464

	if (_news_ticker_sound) SndPlayFx(SND_16_MORSE);

   465

   466

	_statusbar_news_item = *ni;

   467

	w = BaseWindow::FindById(WC_STATUS_BAR, 0);

   468

	if (w != NULL) WP(w, def_d).data_1 = 360;

   469

}

   470

   471

   472

/** Are we ready to show another news item?

   473

 * Only if nothing is in the newsticker and no newspaper is displayed */

   474

static bool ReadyForNextItem()

   475

{

   476

	const BaseWindow *w;

   477

	NewsID item = (_forced_news == INVALID_NEWS) ? _current_news : _forced_news;

   478

	NewsItem *ni;

   479

   480

	if (item >= MAX_NEWS) return true;

   481

	ni = &_news_items[item];

   482

   483

	/* Ticker message

   484

	 * Check if the status bar message is still being displayed? */

   485

	w = BaseWindow::FindById(WC_STATUS_BAR, 0);

   486

	if (w != NULL && WP(w, const def_d).data_1 > -1280) return false;