1

/* $Id$ */

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#include "../stdafx.h"

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#ifdef WITH_SDL

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#include "../openttd.h"

     8

#include "../debug.h"

     9

#include "../functions.h"

    10

#include "../gfx.h"

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#include "../macros.h"

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#include "../sdl.h"

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#include "../window.h"

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#include "../network/network.h"

    15

#include "../variables.h"

    16

#include "../blitter/factory.hpp"

    17

#include "sdl_v.h"

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#include <SDL.h>

    19

    20

static FVideoDriver_SDL iFVideoDriver_SDL;

    21

    22

static SDL_Surface *_sdl_screen;

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static bool _all_modes;

    24

    25

#define MAX_DIRTY_RECTS 100

    26

static SDL_Rect _dirty_rects[MAX_DIRTY_RECTS];

    27

static int _num_dirty_rects;

    28

    29

void VideoDriver_SDL::MakeDirty(int left, int top, int width, int height)

    30

{

    31

	if (_num_dirty_rects < MAX_DIRTY_RECTS) {

    32

		_dirty_rects[_num_dirty_rects].x = left;

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		_dirty_rects[_num_dirty_rects].y = top;

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		_dirty_rects[_num_dirty_rects].w = width;

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		_dirty_rects[_num_dirty_rects].h = height;

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	}

    37

	_num_dirty_rects++;

    38

}

    39

    40

static void UpdatePalette(uint start, uint count)

    41

{

    42

	SDL_Color pal[256];

    43

	uint i;

    44

    45

	for (i = 0; i != count; i++) {

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		pal[i].r = _cur_palette[start + i].r;

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		pal[i].g = _cur_palette[start + i].g;

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		pal[i].b = _cur_palette[start + i].b;

    49

		pal[i].unused = 0;

    50

	}

    51

    52

	SDL_CALL SDL_SetColors(_sdl_screen, pal, start, count);

    53

}

    54

    55

static void InitPalette()

    56

{

    57

	UpdatePalette(0, 256);

    58

}

    59

    60

static void CheckPaletteAnim()

    61

{

    62

	if (_pal_count_dirty != 0) {

    63

		Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();

    64

    65

		switch (blitter->UsePaletteAnimation()) {

    66

			case Blitter::PALETTE_ANIMATION_VIDEO_BACKEND:

    67

				UpdatePalette(_pal_first_dirty, _pal_count_dirty);

    68

				break;

    69

    70

			case Blitter::PALETTE_ANIMATION_BLITTER:

    71

				blitter->PaletteAnimate(_pal_first_dirty, _pal_count_dirty);

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				break;

    73

    74

			case Blitter::PALETTE_ANIMATION_NONE:

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				break;

    76

    77

			default:

    78

				NOT_REACHED();

    79

		}

    80

		_pal_count_dirty = 0;

    81

	}

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}

    83

    84

static void DrawSurfaceToScreen()

    85

{

    86

	int n = _num_dirty_rects;

    87

	if (n != 0) {

    88

		_num_dirty_rects = 0;

    89

		if (n > MAX_DIRTY_RECTS)

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			SDL_CALL SDL_UpdateRect(_sdl_screen, 0, 0, 0, 0);

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		else

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			SDL_CALL SDL_UpdateRects(_sdl_screen, n, _dirty_rects);

    93

	}

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}

    95

    96

static const uint16 default_resolutions[][2] = {

    97

	{ 640,  480},

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	{ 800,  600},

    99

	{1024,  768},

   100

	{1152,  864},

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	{1280,  800},

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	{1280,  960},

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	{1280, 1024},

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	{1400, 1050},

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	{1600, 1200},

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	{1680, 1050},

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	{1920, 1200}

   108

};

   109

   110

static void GetVideoModes()

   111

{

   112

	int i;

   113

	SDL_Rect **modes;

   114

   115

	modes = SDL_CALL SDL_ListModes(NULL, SDL_SWSURFACE + (_fullscreen ? SDL_FULLSCREEN : 0));

   116

   117

	if (modes == NULL)

   118

		error("sdl: no modes available");

   119

   120

	_all_modes = (modes == (void*)-1);

   121

   122

	if (_all_modes) {

   123

		// all modes available, put some default ones here

   124

		memcpy(_resolutions, default_resolutions, sizeof(default_resolutions));

   125

		_num_resolutions = lengthof(default_resolutions);

   126

	} else {

   127

		int n = 0;

   128

		for (i = 0; modes[i]; i++) {

   129

			int w = modes[i]->w;

   130

			int h = modes[i]->h;

   131

			if (IS_INT_INSIDE(w, 640, MAX_SCREEN_WIDTH + 1) &&

   132

					IS_INT_INSIDE(h, 480, MAX_SCREEN_HEIGHT + 1)) {

   133

				int j;

   134

				for (j = 0; j < n; j++) {

   135

					if (_resolutions[j][0] == w && _resolutions[j][1] == h) break;

   136

				}

   137

   138

				if (j == n) {

   139

					_resolutions[j][0] = w;

   140

					_resolutions[j][1] = h;

   141

					if (++n == lengthof(_resolutions)) break;

   142

				}

   143

			}

   144

		}

   145

		_num_resolutions = n;

   146

		SortResolutions(_num_resolutions);

   147

	}

   148

}

   149

   150

static void GetAvailableVideoMode(int *w, int *h)

   151

{

   152

	int i;

   153

	int best;

   154

	uint delta;

   155

   156

	// all modes available?

   157

	if (_all_modes) return;

   158

   159

	// is the wanted mode among the available modes?

   160

	for (i = 0; i != _num_resolutions; i++) {

   161

		if (*w == _resolutions[i][0] && *h == _resolutions[i][1]) return;

   162

	}

   163

   164

	// use the closest possible resolution

   165

	best = 0;

   166

	delta = abs((_resolutions[0][0] - *w) * (_resolutions[0][1] - *h));

   167

	for (i = 1; i != _num_resolutions; ++i) {

   168

		uint newdelta = abs((_resolutions[i][0] - *w) * (_resolutions[i][1] - *h));

   169

		if (newdelta < delta) {

   170

			best = i;

   171

			delta = newdelta;

   172

		}

   173

	}

   174

	*w = _resolutions[best][0];

   175

	*h = _resolutions[best][1];

   176

}

   177

   178

#ifndef ICON_DIR

   179

#define ICON_DIR "media"

   180

#endif

   181

   182

#ifdef WIN32

   183

/* Let's redefine the LoadBMP macro with because we are dynamically

   184

 * loading SDL and need to 'SDL_CALL' all functions */

   185

#undef SDL_LoadBMP

   186

#define SDL_LoadBMP(file)	SDL_LoadBMP_RW(SDL_CALL SDL_RWFromFile(file, "rb"), 1)

   187

#endif

   188

   189

static bool CreateMainSurface(int w, int h)

   190

{

   191

	extern const char _openttd_revision[];

   192

	SDL_Surface *newscreen, *icon;

   193

	char caption[50];

   194

	int bpp = BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth();

   195

   196

	GetAvailableVideoMode(&w, &h);

   197

   198

	DEBUG(driver, 1, "SDL: using mode %dx%dx%d", w, h, bpp);

   199

   200

	if (bpp == 0) error("Can't use a blitter that blits 0 bpp for normal visuals");

   201

   202

	/* Give the application an icon */

   203

	icon = SDL_CALL SDL_LoadBMP(ICON_DIR PATHSEP "openttd.32.bmp");

   204

	if (icon != NULL) {

   205

		/* Get the colourkey, which will be magenta */

   206

		uint32 rgbmap = SDL_CALL SDL_MapRGB(icon->format, 255, 0, 255);

   207

   208

		SDL_CALL SDL_SetColorKey(icon, SDL_SRCCOLORKEY, rgbmap);

   209

		SDL_CALL SDL_WM_SetIcon(icon, NULL);

   210

		SDL_CALL SDL_FreeSurface(icon);

   211

	}

   212

   213

	// DO NOT CHANGE TO HWSURFACE, IT DOES NOT WORK

   214

	newscreen = SDL_CALL SDL_SetVideoMode(w, h, bpp, SDL_SWSURFACE | SDL_HWPALETTE | (_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE));

   215

	if (newscreen == NULL)

   216

		return false;

   217

   218

	_screen.width = newscreen->w;

   219

	_screen.height = newscreen->h;

   220

	_screen.pitch = newscreen->pitch / (bpp / 8);

   221

	_sdl_screen = newscreen;

   222

	InitPalette();

   223

   224

	snprintf(caption, sizeof(caption), "OpenTTD %s", _openttd_revision);

   225

	SDL_CALL SDL_WM_SetCaption(caption, caption);

   226

	SDL_CALL SDL_ShowCursor(0);

   227

   228

	GameSizeChanged();

   229

   230

	return true;

   231

}

   232

   233

struct VkMapping {

   234

	uint16 vk_from;

   235

	byte vk_count;

   236

	byte map_to;

   237

};

   238

   239

#define AS(x, z) {x, 0, z}

   240

#define AM(x, y, z, w) {x, y - x, z}

   241

   242

static const VkMapping _vk_mapping[] = {

   243

	/* Pageup stuff + up/down */

   244

	AM(SDLK_PAGEUP, SDLK_PAGEDOWN, WKC_PAGEUP, WKC_PAGEDOWN),

   245

	AS(SDLK_UP,     WKC_UP),

   246

	AS(SDLK_DOWN,   WKC_DOWN),

   247

	AS(SDLK_LEFT,   WKC_LEFT),

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	AS(SDLK_RIGHT,  WKC_RIGHT),

   249

   250

	AS(SDLK_HOME,   WKC_HOME),

   251

	AS(SDLK_END,    WKC_END),

   252

   253

	AS(SDLK_INSERT, WKC_INSERT),

   254

	AS(SDLK_DELETE, WKC_DELETE),

   255

   256

	/* Map letters & digits */

   257

	AM(SDLK_a, SDLK_z, 'A', 'Z'),

   258

	AM(SDLK_0, SDLK_9, '0', '9'),

   259

   260

	AS(SDLK_ESCAPE,    WKC_ESC),

   261

	AS(SDLK_PAUSE,     WKC_PAUSE),

   262

	AS(SDLK_BACKSPACE, WKC_BACKSPACE),

   263

   264

	AS(SDLK_SPACE,     WKC_SPACE),

   265

	AS(SDLK_RETURN,    WKC_RETURN),

   266

	AS(SDLK_TAB,       WKC_TAB),

   267

   268

	/* Function keys */

   269

	AM(SDLK_F1, SDLK_F12, WKC_F1, WKC_F12),

   270

   271

	/* Numeric part. */

   272

	AM(SDLK_KP0, SDLK_KP9, WKC_NUM_0, WKC_NUM_9),

   273

	AS(SDLK_KP_DIVIDE,   WKC_NUM_DIV),

   274

	AS(SDLK_KP_MULTIPLY, WKC_NUM_MUL),

   275

	AS(SDLK_KP_MINUS,    WKC_NUM_MINUS),

   276

	AS(SDLK_KP_PLUS,     WKC_NUM_PLUS),

   277

	AS(SDLK_KP_ENTER,    WKC_NUM_ENTER),

   278

	AS(SDLK_KP_PERIOD,   WKC_NUM_DECIMAL),

   279

   280

	/* Other non-letter keys */

   281

	AS(SDLK_SLASH,        WKC_SLASH),

   282

	AS(SDLK_SEMICOLON,    WKC_SEMICOLON),

   283

	AS(SDLK_EQUALS,       WKC_EQUALS),

   284

	AS(SDLK_LEFTBRACKET,  WKC_L_BRACKET),

   285

	AS(SDLK_BACKSLASH,    WKC_BACKSLASH),

   286

	AS(SDLK_RIGHTBRACKET, WKC_R_BRACKET),

   287

   288

	AS(SDLK_QUOTE,   WKC_SINGLEQUOTE),

   289

	AS(SDLK_COMMA,   WKC_COMMA),

   290

	AS(SDLK_MINUS,   WKC_MINUS),

   291

	AS(SDLK_PERIOD,  WKC_PERIOD)

   292

};

   293

   294

static uint32 ConvertSdlKeyIntoMy(SDL_keysym *sym)

   295

{

   296

	const VkMapping *map;

   297

	uint key = 0;

   298

   299

	for (map = _vk_mapping; map != endof(_vk_mapping); ++map) {

   300

		if ((uint)(sym->sym - map->vk_from) <= map->vk_count) {

   301

			key = sym->sym - map->vk_from + map->map_to;

   302

			break;

   303

		}

   304

	}

   305

   306

	// check scancode for BACKQUOTE key, because we want the key left of "1", not anything else (on non-US keyboards)

   307

#if defined(WIN32) || defined(__OS2__)

   308

	if (sym->scancode == 41) key = WKC_BACKQUOTE;

   309

#elif defined(__APPLE__)

   310

	if (sym->scancode == 10) key = WKC_BACKQUOTE;

   311

#elif defined(__MORPHOS__)

   312

	if (sym->scancode == 0)  key = WKC_BACKQUOTE;  // yes, that key is code '0' under MorphOS :)

   313

#elif defined(__BEOS__)

   314

	if (sym->scancode == 17) key = WKC_BACKQUOTE;

   315

#elif defined(__SVR4) && defined(__sun)

   316

	if (sym->scancode == 60) key = WKC_BACKQUOTE;

   317

	if (sym->scancode == 49) key = WKC_BACKSPACE;

   318

#elif defined(__sgi__)

   319

	if (sym->scancode == 22) key = WKC_BACKQUOTE;

   320

#else

   321

	if (sym->scancode == 49) key = WKC_BACKQUOTE;

   322

#endif

   323

   324

	// META are the command keys on mac

   325

	if (sym->mod & KMOD_META)  key |= WKC_META;

   326

	if (sym->mod & KMOD_SHIFT) key |= WKC_SHIFT;

   327

	if (sym->mod & KMOD_CTRL)  key |= WKC_CTRL;

   328

	if (sym->mod & KMOD_ALT)   key |= WKC_ALT;

   329

	// these two lines really help porting hotkey combos. Uncomment to use -- Bjarni

   330

#if 0

   331

	DEBUG(driver, 0, "Scancode character pressed %u", sym->scancode);

   332

	DEBUG(driver, 0, "Unicode character pressed %u", sym->unicode);

   333

#endif

   334

	return (key << 16) + sym->unicode;

   335

}

   336

   337

static int PollEvent()

   338

{

   339

	SDL_Event ev;

   340

   341

	if (!SDL_CALL SDL_PollEvent(&ev)) return -2;

   342

   343

	switch (ev.type) {

   344

		case SDL_MOUSEMOTION:

   345

			if (_cursor.fix_at) {

   346

				int dx = ev.motion.x - _cursor.pos.x;

   347

				int dy = ev.motion.y - _cursor.pos.y;

   348

				if (dx != 0 || dy != 0) {

   349

					_cursor.delta.x += dx;

   350

					_cursor.delta.y += dy;

   351

					SDL_CALL SDL_WarpMouse(_cursor.pos.x, _cursor.pos.y);

   352

				}

   353

			} else {

   354

				_cursor.delta.x = ev.motion.x - _cursor.pos.x;

   355

				_cursor.delta.y = ev.motion.y - _cursor.pos.y;

   356

				_cursor.pos.x = ev.motion.x;

   357

				_cursor.pos.y = ev.motion.y;

   358

				_cursor.dirty = true;

   359

			}

   360

			HandleMouseEvents();

   361

			break;

   362

   363

		case SDL_MOUSEBUTTONDOWN:

   364

			if (_rightclick_emulate && SDL_CALL SDL_GetModState() & KMOD_CTRL) {

   365

				ev.button.button = SDL_BUTTON_RIGHT;

   366

			}

   367

   368

			switch (ev.button.button) {

   369

				case SDL_BUTTON_LEFT:

   370

					_left_button_down = true;

   371

					break;

   372

   373

				case SDL_BUTTON_RIGHT:

   374

					_right_button_down = true;

   375

					_right_button_clicked = true;

   376

					break;

   377

   378

				case SDL_BUTTON_WHEELUP:   _cursor.wheel--; break;

   379

				case SDL_BUTTON_WHEELDOWN: _cursor.wheel++; break;

   380

   381

				default: break;

   382

			}

   383

			HandleMouseEvents();

   384

			break;

   385

   386

		case SDL_MOUSEBUTTONUP:

   387

			if (_rightclick_emulate) {

   388

				_right_button_down = false;

   389

				_left_button_down = false;

   390

				_left_button_clicked = false;

   391

			} else if (ev.button.button == SDL_BUTTON_LEFT) {

   392

				_left_button_down = false;

   393

				_left_button_clicked = false;

   394

			} else if (ev.button.button == SDL_BUTTON_RIGHT) {

   395

				_right_button_down = false;

   396

			}

   397

			HandleMouseEvents();

   398

			break;

   399

   400

		case SDL_ACTIVEEVENT:

   401

			if (!(ev.active.state & SDL_APPMOUSEFOCUS)) break;

   402

   403

			if (ev.active.gain) { // mouse entered the window, enable cursor

   404

				_cursor.in_window = true;

   405

			} else {

   406

				UndrawMouseCursor(); // mouse left the window, undraw cursor

   407

				_cursor.in_window = false;

   408

			}

   409

			break;

   410

   411

		case SDL_QUIT: HandleExitGameRequest(); break;

   412

   413

		case SDL_KEYDOWN: /* Toggle full-screen on ALT + ENTER/F */

   414

			if ((ev.key.keysym.mod & (KMOD_ALT | KMOD_META)) &&

   415

					(ev.key.keysym.sym == SDLK_RETURN || ev.key.keysym.sym == SDLK_f)) {

   416

				ToggleFullScreen(!_fullscreen);

   417

			} else {

   418

				HandleKeypress(ConvertSdlKeyIntoMy(&ev.key.keysym));

   419

			}

   420

			break;

   421

   422

		case SDL_VIDEORESIZE: {

   425

			ChangeResInGame(w, h);

   426

			break;

   427

		}

   428

	}

   429

	return -1;

   430

}

   431

   432

const char *VideoDriver_SDL::Start(const char * const *parm)

   433

{

   434

	char buf[30];

   435

   436

	const char *s = SdlOpen(SDL_INIT_VIDEO);

   437

	if (s != NULL) return s;

   438

   439

	SDL_CALL SDL_VideoDriverName(buf, 30);

   440

	DEBUG(driver, 1, "SDL: using driver '%s'", buf);

   441

   442

	GetVideoModes();

   443

	CreateMainSurface(_cur_resolution[0], _cur_resolution[1]);

   444

	MarkWholeScreenDirty();

   445

   446

	SDL_CALL SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);

   447

	SDL_CALL SDL_EnableUNICODE(1);

   448

	return NULL;

   449

}

   450

   451

void VideoDriver_SDL::Stop()

   452

{

   453

	SdlClose(SDL_INIT_VIDEO);

   454

}

   455

   456

void VideoDriver_SDL::MainLoop()

   457

{

   458

	uint32 cur_ticks = SDL_CALL SDL_GetTicks();

   459

	uint32 last_cur_ticks = cur_ticks;

   460

	uint32 next_tick = cur_ticks + 30;

   461

	uint32 pal_tick = 0;

   462

	uint32 mod;

   463

	int numkeys;

   464

	Uint8 *keys;

   465

   466

	for (;;) {

   467

		uint32 prev_cur_ticks = cur_ticks; // to check for wrapping

   468

		InteractiveRandom(); // randomness

   469

   470

		while (PollEvent() == -1) {}

   471

		if (_exit_game) return;

   472

   473

		mod = SDL_CALL SDL_GetModState();

   474

		keys = SDL_CALL SDL_GetKeyState(&numkeys);

   475

#if defined(_DEBUG)

   476

		if (_shift_pressed)

   477

#else

   478

		/* Speedup when pressing tab, except when using ALT+TAB

   479

		 * to switch to another application */

   480

		if (keys[SDLK_TAB] && (mod & KMOD_ALT) == 0)

   481

#endif

   482

		{

   483

			if (!_networking && _game_mode != GM_MENU) _fast_forward |= 2;

   484

		} else if (_fast_forward & 2) {

   485

			_fast_forward = 0;

   486

		}

   487

   488

		cur_ticks = SDL_CALL SDL_GetTicks();

   489

		if (cur_ticks >= next_tick || (_fast_forward && !_pause_game) || cur_ticks < prev_cur_ticks) {

   490

			_realtime_tick += cur_ticks - last_cur_ticks;

   491

			last_cur_ticks = cur_ticks;

   492

			next_tick = cur_ticks + 30;

   493

   494

			_ctrl_pressed  = !!(mod & KMOD_CTRL);

   495

			_shift_pressed = !!(mod & KMOD_SHIFT);

   496

   497

			// determine which directional keys are down

   498

			_dirkeys =

   499

				(keys[SDLK_LEFT]  ? 1 : 0) |

   500

				(keys[SDLK_UP]    ? 2 : 0) |

   501

				(keys[SDLK_RIGHT] ? 4 : 0) |

   502

				(keys[SDLK_DOWN]  ? 8 : 0);

   503

			GameLoop();