1

/* $Id$ */

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#include "../stdafx.h"

     4

     5

#ifdef WITH_SDL

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     7

#include "../openttd.h"

     8

#include "../debug.h"

     9

#include "../gfx_func.h"

    10

#include "../sdl.h"

    11

#include "../variables.h"

    12

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

    13

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

    14

#include "../core/math_func.hpp"

    15

#include "sdl_v.h"

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#include <SDL.h>

    17

    18

static FVideoDriver_SDL iFVideoDriver_SDL;

    19

    20

static SDL_Surface *_sdl_screen;

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static bool _all_modes;

    22

    23

#define MAX_DIRTY_RECTS 100

    24

static SDL_Rect _dirty_rects[MAX_DIRTY_RECTS];

    25

static int _num_dirty_rects;

    26

    27

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

    28

{

    29

	if (_num_dirty_rects < MAX_DIRTY_RECTS) {

    30

		_dirty_rects[_num_dirty_rects].x = left;

    31

		_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;

    34

	}

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	_num_dirty_rects++;

    36

}

    37

    38

static void UpdatePalette(uint start, uint count)

    39

{

    40

	SDL_Color pal[256];

    41

	uint i;

    42

    43

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

    44

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

    45

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

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

    47

		pal[i].unused = 0;

    48

	}

    49

    50

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

    51

}

    52

    53

static void InitPalette()

    54

{

    55

	UpdatePalette(0, 256);

    56

}

    57

    58

static void CheckPaletteAnim()

    59

{

    60

	if (_pal_count_dirty != 0) {

    61

		Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();

    62

    63

		switch (blitter->UsePaletteAnimation()) {

    64

			case Blitter::PALETTE_ANIMATION_VIDEO_BACKEND:

    65

				UpdatePalette(_pal_first_dirty, _pal_count_dirty);

    66

				break;

    67

    68

			case Blitter::PALETTE_ANIMATION_BLITTER:

    69

				blitter->PaletteAnimate(_pal_first_dirty, _pal_count_dirty);

    70

				break;

    71

    72

			case Blitter::PALETTE_ANIMATION_NONE:

    73

				break;

    74

    75

			default:

    76

				NOT_REACHED();

    77

		}

    78

		_pal_count_dirty = 0;

    79

	}

    80

}

    81

    82

static void DrawSurfaceToScreen()

    83

{

    84

	int n = _num_dirty_rects;

    85

	if (n != 0) {

    86

		_num_dirty_rects = 0;

    87

		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);

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	}

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}

    93

    94

static const uint16 default_resolutions[][2] = {

    95

	{ 640,  480},

    96

	{ 800,  600},

    97

	{1024,  768},

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	{1152,  864},

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	{1280,  800},

   100

	{1280,  960},

   101

	{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}

   106

};

   107

   108

static void GetVideoModes()

   109

{

   110

	int i;

   111

	SDL_Rect **modes;

   112

   113

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

   114

   115

	if (modes == NULL)

   116

		error("sdl: no modes available");

   117

   118

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

   119

   120

	if (_all_modes) {

   121

		// all modes available, put some default ones here

   122

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

   123

		_num_resolutions = lengthof(default_resolutions);

   124

	} else {

   125

		int n = 0;

   126

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

   127

			int w = modes[i]->w;

   128

			int h = modes[i]->h;

   129

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

   130

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

   131

				int j;

   132

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

   133

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

   134

				}

   135

   136

				if (j == n) {

   137

					_resolutions[j][0] = w;

   138

					_resolutions[j][1] = h;

   139

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

   140

				}

   141

			}

   142

		}

   143

		_num_resolutions = n;

   144

		SortResolutions(_num_resolutions);

   145

	}

   146

}

   147

   148

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

   149

{

   150

	int i;

   151

	int best;

   152

	uint delta;

   153

   154

	// all modes available?

   155

	if (_all_modes) return;

   156

   157

	// is the wanted mode among the available modes?

   158

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

   159

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

   160

	}

   161

   162

	// use the closest possible resolution

   163

	best = 0;

   164

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

   165

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

   166

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

   167

		if (newdelta < delta) {

   168

			best = i;

   169

			delta = newdelta;

   170

		}

   171

	}

   172

	*w = _resolutions[best][0];

   173

	*h = _resolutions[best][1];

   174

}

   175

   176

#ifndef ICON_DIR

   177

#define ICON_DIR "media"

   178

#endif

   179

   180

#ifdef WIN32

   181

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

   182

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

   183

#undef SDL_LoadBMP

   184

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

   185

#endif

   186

   187

static bool CreateMainSurface(int w, int h)

   188

{

   189

	extern const char _openttd_revision[];

   190

	SDL_Surface *newscreen, *icon;

   191

	char caption[50];

   192

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

   193

   194

	GetAvailableVideoMode(&w, &h);

   195

   196

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

   197

   198

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

   199

   200

	/* Give the application an icon */

   201

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

   202

	if (icon != NULL) {

   203

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

   204

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

   205

   206

		SDL_CALL SDL_SetColorKey(icon, SDL_SRCCOLORKEY, rgbmap);

   207

		SDL_CALL SDL_WM_SetIcon(icon, NULL);

   208

		SDL_CALL SDL_FreeSurface(icon);

   209

	}

   210

   211

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

   212

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

   213

	if (newscreen == NULL)

   214

		return false;

   215

   216

	_screen.width = newscreen->w;

   217

	_screen.height = newscreen->h;

   218

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

   219

	_sdl_screen = newscreen;

   220

	InitPalette();

   221

   222

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

   223

	SDL_CALL SDL_WM_SetCaption(caption, caption);

   224

	SDL_CALL SDL_ShowCursor(0);

   225

   226

	GameSizeChanged();

   227

   228

	return true;

   229

}

   230

   231

struct VkMapping {

   232

	uint16 vk_from;

   233

	byte vk_count;

   234

	byte map_to;

   235

};

   236

   237

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

   238

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

   239

   240

static const VkMapping _vk_mapping[] = {

   241

	/* Pageup stuff + up/down */

   242

	AM(SDLK_PAGEUP, SDLK_PAGEDOWN, WKC_PAGEUP, WKC_PAGEDOWN),

   243

	AS(SDLK_UP,     WKC_UP),

   244

	AS(SDLK_DOWN,   WKC_DOWN),

   245

	AS(SDLK_LEFT,   WKC_LEFT),

   246

	AS(SDLK_RIGHT,  WKC_RIGHT),

   247

   248

	AS(SDLK_HOME,   WKC_HOME),

   249

	AS(SDLK_END,    WKC_END),

   250

   251

	AS(SDLK_INSERT, WKC_INSERT),

   252

	AS(SDLK_DELETE, WKC_DELETE),

   253

   254

	/* Map letters & digits */

   255

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

   256

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

   257

   258

	AS(SDLK_ESCAPE,    WKC_ESC),

   259

	AS(SDLK_PAUSE,     WKC_PAUSE),

   260

	AS(SDLK_BACKSPACE, WKC_BACKSPACE),

   261

   262

	AS(SDLK_SPACE,     WKC_SPACE),

   263

	AS(SDLK_RETURN,    WKC_RETURN),

   264

	AS(SDLK_TAB,       WKC_TAB),

   265

   266

	/* Function keys */

   267

	AM(SDLK_F1, SDLK_F12, WKC_F1, WKC_F12),

   268

   269

	/* Numeric part. */

   270

	AM(SDLK_KP0, SDLK_KP9, WKC_NUM_0, WKC_NUM_9),

   271

	AS(SDLK_KP_DIVIDE,   WKC_NUM_DIV),

   272

	AS(SDLK_KP_MULTIPLY, WKC_NUM_MUL),

   273

	AS(SDLK_KP_MINUS,    WKC_NUM_MINUS),

   274

	AS(SDLK_KP_PLUS,     WKC_NUM_PLUS),

   275

	AS(SDLK_KP_ENTER,    WKC_NUM_ENTER),

   276

	AS(SDLK_KP_PERIOD,   WKC_NUM_DECIMAL),

   277

   278

	/* Other non-letter keys */

   279

	AS(SDLK_SLASH,        WKC_SLASH),

   280

	AS(SDLK_SEMICOLON,    WKC_SEMICOLON),

   281

	AS(SDLK_EQUALS,       WKC_EQUALS),

   282

	AS(SDLK_LEFTBRACKET,  WKC_L_BRACKET),

   283

	AS(SDLK_BACKSLASH,    WKC_BACKSLASH),

   284

	AS(SDLK_RIGHTBRACKET, WKC_R_BRACKET),

   285

   286

	AS(SDLK_QUOTE,   WKC_SINGLEQUOTE),

   287

	AS(SDLK_COMMA,   WKC_COMMA),

   288

	AS(SDLK_MINUS,   WKC_MINUS),

   289

	AS(SDLK_PERIOD,  WKC_PERIOD)

   290

};

   291

   292

static uint32 ConvertSdlKeyIntoMy(SDL_keysym *sym)

   293

{

   294

	const VkMapping *map;

   295

	uint key = 0;

   296

   297

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

   298

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

   299

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

   300

			break;

   301

		}

   302

	}

   303

   304

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

   305

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

   306

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

   307

#elif defined(__APPLE__)

   308

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

   309

#elif defined(__MORPHOS__)

   310

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

   311

#elif defined(__BEOS__)

   312

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

   313

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

   314

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

   315

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

   316

#elif defined(__sgi__)

   317

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

   318

#else

   319

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

   320

#endif

   321

   322

	// META are the command keys on mac

   323

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

   324

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

   325

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

   326

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

   327

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

   328

#if 0

   329

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

   330

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

   331

#endif

   332

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

   333

}

   334

   335

static int PollEvent()

   336

{

   337

	SDL_Event ev;

   338

   339

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

   340

   341

	switch (ev.type) {

   342

		case SDL_MOUSEMOTION:

   343

			if (_cursor.fix_at) {

   344

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

   345

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

   346

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

   347

					_cursor.delta.x += dx;

   348

					_cursor.delta.y += dy;

   349

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

   350

				}

   351

			} else {

   352

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

   353

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

   354

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

   355

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

   356

				_cursor.dirty = true;

   357

			}

   358

			HandleMouseEvents();

   359

			break;

   360

   361

		case SDL_MOUSEBUTTONDOWN:

   362

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

   363

				ev.button.button = SDL_BUTTON_RIGHT;

   364

			}

   365

   366

			switch (ev.button.button) {

   367

				case SDL_BUTTON_LEFT:

   368

					_left_button_down = true;

   369

					break;

   370

   371

				case SDL_BUTTON_RIGHT:

   372

					_right_button_down = true;

   373

					_right_button_clicked = true;

   374

					break;

   375

   376

				case SDL_BUTTON_WHEELUP:   _cursor.wheel--; break;

   377

				case SDL_BUTTON_WHEELDOWN: _cursor.wheel++; break;

   378

   379

				default: break;

   380

			}

   381

			HandleMouseEvents();

   382

			break;

   383

   384

		case SDL_MOUSEBUTTONUP:

   385

			if (_rightclick_emulate) {

   386

				_right_button_down = false;

   387

				_left_button_down = false;

   388

				_left_button_clicked = false;

   389

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

   390

				_left_button_down = false;

   391

				_left_button_clicked = false;

   392

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

   393

				_right_button_down = false;

   394

			}

   395

			HandleMouseEvents();

   396

			break;

   397

   398

		case SDL_ACTIVEEVENT:

   399

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

   400

   401

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

   402

				_cursor.in_window = true;

   403

			} else {

   404

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

   405

				_cursor.in_window = false;

   406

			}

   407

			break;

   408

   409

		case SDL_QUIT: HandleExitGameRequest(); break;

   410

   411

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

   412

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

   413

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

   414

				ToggleFullScreen(!_fullscreen);

   415

			} else {

   416

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

   417

			}

   418

			break;

   419

   420

		case SDL_VIDEORESIZE: {

   421

			int w = Clamp(ev.resize.w, 64, MAX_SCREEN_WIDTH);

   422

			int h = Clamp(ev.resize.h, 64, MAX_SCREEN_HEIGHT);

   423

			ChangeResInGame(w, h);

   424

			break;

   425

		}

   426

	}

   427

	return -1;

   428

}

   429

   430

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

   431

{

   432

	char buf[30];

   433

   434

	const char *s = SdlOpen(SDL_INIT_VIDEO);

   435

	if (s != NULL) return s;

   436

   437

	SDL_CALL SDL_VideoDriverName(buf, 30);

   438

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

   439

   440

	GetVideoModes();

   441

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

   442

	MarkWholeScreenDirty();

   443

   444

	SDL_CALL SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);

   445

	SDL_CALL SDL_EnableUNICODE(1);

   446

	return NULL;

   447

}

   448

   449

void VideoDriver_SDL::Stop()

   450

{

   451

	SdlClose(SDL_INIT_VIDEO);

   452

}

   453

   454

void VideoDriver_SDL::MainLoop()

   455

{

   456

	uint32 cur_ticks = SDL_CALL SDL_GetTicks();

   457

	uint32 last_cur_ticks = cur_ticks;

   458

	uint32 next_tick = cur_ticks + 30;

   459

	uint32 pal_tick = 0;

   460

	uint32 mod;

   461

	int numkeys;

   462

	Uint8 *keys;

   463

   464

	for (;;) {

   465

		uint32 prev_cur_ticks = cur_ticks; // to check for wrapping

   466

		InteractiveRandom(); // randomness

   467

   468

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

   469

		if (_exit_game) return;

   470

   471

		mod = SDL_CALL SDL_GetModState();

   472

		keys = SDL_CALL SDL_GetKeyState(&numkeys);

   473

#if defined(_DEBUG)

   474

		if (_shift_pressed)

   475

#else

   476

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

   477

		 * to switch to another application */

   478

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

   479

#endif

   480

		{

   481

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

   482

		} else if (_fast_forward & 2) {

   483

			_fast_forward = 0;

   484

		}

   485

   486

		cur_ticks = SDL_CALL SDL_GetTicks();

   487

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

   488

			_realtime_tick += cur_ticks - last_cur_ticks;

   489

			last_cur_ticks = cur_ticks;

   490

			next_tick = cur_ticks + 30;

   491

   492

			_ctrl_pressed  = !!(mod & KMOD_CTRL);

   493

			_shift_pressed = !!(mod & KMOD_SHIFT);

   494

   495

			// determine which directional keys are down

   496

			_dirkeys =

   497

				(keys[SDLK_LEFT]  ? 1 : 0) |

   498

				(keys[SDLK_UP]    ? 2 : 0) |

   499

				(keys[SDLK_RIGHT] ? 4 : 0) |

   500

				(keys[SDLK_DOWN]  ? 8 : 0);

   501

			GameLoop();

   502