1

/* $Id$ */

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     3

/** @file sdl_v.cpp Implementation of the SDL video driver. */

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#ifdef WITH_SDL

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     7

#include "../stdafx.h"

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#include "../openttd.h"

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#include "../debug.h"

    10

#include "../gfx_func.h"

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#include "../sdl.h"

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#include "../variables.h"

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#include "../rev.h"

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

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

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

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#include "../core/random_func.hpp"

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#include "../functions.h"

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#include "../texteff.hpp"

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#include "sdl_v.h"

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#include <SDL.h>

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    23

static FVideoDriver_SDL iFVideoDriver_SDL;

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    25

static SDL_Surface *_sdl_screen;

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static bool _all_modes;

    27

    28

#define MAX_DIRTY_RECTS 100

    29

static SDL_Rect _dirty_rects[MAX_DIRTY_RECTS];

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static int _num_dirty_rects;

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    32

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

    33

{

    34

	if (_num_dirty_rects < MAX_DIRTY_RECTS) {

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		_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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	}

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	_num_dirty_rects++;

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}

    42

    43

static void UpdatePalette(uint start, uint count)

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{

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	SDL_Color pal[256];

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	uint i;

    47

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	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;

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		pal[i].unused = 0;

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	}

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

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}

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    58

static void InitPalette()

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{

    60

	UpdatePalette(0, 256);

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}

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    63

static void CheckPaletteAnim()

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{

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	if (_pal_count_dirty != 0) {

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		Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();

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    68

		switch (blitter->UsePaletteAnimation()) {

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			case Blitter::PALETTE_ANIMATION_VIDEO_BACKEND:

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				UpdatePalette(_pal_first_dirty, _pal_count_dirty);

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				break;

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    73

			case Blitter::PALETTE_ANIMATION_BLITTER:

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				blitter->PaletteAnimate(_pal_first_dirty, _pal_count_dirty);

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				break;

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			case Blitter::PALETTE_ANIMATION_NONE:

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				break;

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			default:

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				NOT_REACHED();

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		}

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		_pal_count_dirty = 0;

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	}

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}

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    87

static void DrawSurfaceToScreen()

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{

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	int n = _num_dirty_rects;

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	if (n != 0) {

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		_num_dirty_rects = 0;

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		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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}

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	{ 640,  480},

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	{ 800,  600},

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	{1024,  768},

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	{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}

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};

   112

   113

static void GetVideoModes()

   114

{

   115

	int i;

   116

	SDL_Rect **modes;

   117

   118

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

   119

   120

	if (modes == NULL)

   121

		usererror("sdl: no modes available");

   122

   123

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

   124

   125

	if (_all_modes) {

   126

		// all modes available, put some default ones here

   127

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

   128

		_num_resolutions = lengthof(default_resolutions);

   129

	} else {

   130

		int n = 0;

   131

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

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			int w = modes[i]->w;

   133

			int h = modes[i]->h;

   134

			if (w >= 640 && h >= 480) {

   135

				int j;

   136

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

   138

				}

   139

   140

				if (j == n) {

   143

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

   144

				}

   145

			}

   146

		}

   147

		_num_resolutions = n;

   148

		SortResolutions(_num_resolutions);

   149

	}

   150

}

   151

   152

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

   153

{

   154

	int i;

   155

	int best;

   156

	uint delta;

   157

   158

	// all modes available?

   159

	if (_all_modes) return;

   160

   161

	// is the wanted mode among the available modes?

   162

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

   164

	}

   165

   166

	// use the closest possible resolution

   167

	best = 0;

   169

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

   171

		if (newdelta < delta) {

   172

			best = i;

   173

			delta = newdelta;

   174

		}

   175

	}

   178

}

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   180

#ifndef ICON_DIR

   181

#define ICON_DIR "media"

   182

#endif

   183

   184

#ifdef WIN32

   185

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

   186

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

   187

#undef SDL_LoadBMP

   188

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

   189

#endif

   190

   191

static bool CreateMainSurface(int w, int h)

   192

{

   193

	SDL_Surface *newscreen, *icon;

   194

	char caption[50];

   195

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

   196

   197

	GetAvailableVideoMode(&w, &h);

   198

   199

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

   200

   201

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

   202

   203

	/* Give the application an icon */

   204

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

   205

	if (icon != NULL) {

   206

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

   207

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

   208

   209

		SDL_CALL SDL_SetColorKey(icon, SDL_SRCCOLORKEY, rgbmap);

   210

		SDL_CALL SDL_WM_SetIcon(icon, NULL);

   211

		SDL_CALL SDL_FreeSurface(icon);

   212

	}

   213

   214

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

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

   216

	if (newscreen == NULL)

   217

		return false;

   218

   219

	_screen.width = newscreen->w;

   220

	_screen.height = newscreen->h;

   221

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

   222

	_sdl_screen = newscreen;

   223

	InitPalette();

   224

   225

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

   226

	SDL_CALL SDL_WM_SetCaption(caption, caption);

   227

	SDL_CALL SDL_ShowCursor(0);

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   229

	GameSizeChanged();

   230

   231

	return true;

   232

}

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   234

struct VkMapping {

   235

	uint16 vk_from;

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	byte vk_count;

   237

	byte map_to;

   238

};

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   240

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

   241

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

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   243

static const VkMapping _vk_mapping[] = {

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	/* Pageup stuff + up/down */

   245

	AM(SDLK_PAGEUP, SDLK_PAGEDOWN, WKC_PAGEUP, WKC_PAGEDOWN),

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	AS(SDLK_UP,     WKC_UP),

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	AS(SDLK_DOWN,   WKC_DOWN),

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	AS(SDLK_LEFT,   WKC_LEFT),

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	AS(SDLK_RIGHT,  WKC_RIGHT),

   250

   251

	AS(SDLK_HOME,   WKC_HOME),

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	AS(SDLK_END,    WKC_END),

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   254

	AS(SDLK_INSERT, WKC_INSERT),

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	AS(SDLK_DELETE, WKC_DELETE),

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   257

	/* Map letters & digits */

   258

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

   259

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

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   261

	AS(SDLK_ESCAPE,    WKC_ESC),

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	AS(SDLK_PAUSE,     WKC_PAUSE),

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	AS(SDLK_BACKSPACE, WKC_BACKSPACE),

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   265

	AS(SDLK_SPACE,     WKC_SPACE),

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	AS(SDLK_RETURN,    WKC_RETURN),

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	AS(SDLK_TAB,       WKC_TAB),

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   269

	/* Function keys */

   270

	AM(SDLK_F1, SDLK_F12, WKC_F1, WKC_F12),

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   272

	/* Numeric part. */

   273

	AM(SDLK_KP0, SDLK_KP9, WKC_NUM_0, WKC_NUM_9),

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	AS(SDLK_KP_DIVIDE,   WKC_NUM_DIV),

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	AS(SDLK_KP_MULTIPLY, WKC_NUM_MUL),

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	AS(SDLK_KP_MINUS,    WKC_NUM_MINUS),

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	AS(SDLK_KP_PLUS,     WKC_NUM_PLUS),

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	AS(SDLK_KP_ENTER,    WKC_NUM_ENTER),

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	AS(SDLK_KP_PERIOD,   WKC_NUM_DECIMAL),

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   281

	/* Other non-letter keys */

   282

	AS(SDLK_SLASH,        WKC_SLASH),

   283

	AS(SDLK_SEMICOLON,    WKC_SEMICOLON),

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	AS(SDLK_EQUALS,       WKC_EQUALS),

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	AS(SDLK_LEFTBRACKET,  WKC_L_BRACKET),

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	AS(SDLK_BACKSLASH,    WKC_BACKSLASH),

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	AS(SDLK_RIGHTBRACKET, WKC_R_BRACKET),

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   289

	AS(SDLK_QUOTE,   WKC_SINGLEQUOTE),

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	AS(SDLK_COMMA,   WKC_COMMA),

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	AS(SDLK_MINUS,   WKC_MINUS),

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	AS(SDLK_PERIOD,  WKC_PERIOD)

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};

   294

   295

static uint32 ConvertSdlKeyIntoMy(SDL_keysym *sym)

   296

{

   297

	const VkMapping *map;

   298

	uint key = 0;

   299

   300

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

   301

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

   302

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

   303

			break;

   304

		}

   305

	}

   306

   307

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

   308

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

   309

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

   310

#elif defined(__APPLE__)

   311

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

   312

#elif defined(__MORPHOS__)

   313

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

   314

#elif defined(__BEOS__)

   315

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

   316

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

   317

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

   318

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

   319

#elif defined(__sgi__)

   320

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

   321

#else

   322

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

   323

#endif

   324

   325

	// META are the command keys on mac

   326

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

   327

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

   328

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

   329

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

   330

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

   331

#if 0

   332

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

   333

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

   334

#endif

   335

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

   336

}

   337

   338

static int PollEvent()

   339

{

   340

	SDL_Event ev;

   341

   342

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

   343

   344

	switch (ev.type) {

   345

		case SDL_MOUSEMOTION:

   346

			if (_cursor.fix_at) {

   347

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

   348

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

   349

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

   350

					_cursor.delta.x += dx;

   351

					_cursor.delta.y += dy;

   352

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

   353

				}

   354

			} else {

   355

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

   356

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

   357

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

   358

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

   359

				_cursor.dirty = true;

   360

			}

   361

			HandleMouseEvents();

   362

			break;

   363

   364

		case SDL_MOUSEBUTTONDOWN:

   365

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

   366

				ev.button.button = SDL_BUTTON_RIGHT;

   367

			}

   368

   369

			switch (ev.button.button) {

   370

				case SDL_BUTTON_LEFT:

   371

					_left_button_down = true;

   372

					break;

   373

   374

				case SDL_BUTTON_RIGHT:

   375

					_right_button_down = true;

   376

					_right_button_clicked = true;

   377

					break;

   378

   379

				case SDL_BUTTON_WHEELUP:   _cursor.wheel--; break;

   380

				case SDL_BUTTON_WHEELDOWN: _cursor.wheel++; break;

   381

   382

				default: break;

   383

			}

   384

			HandleMouseEvents();

   385

			break;

   386

   387

		case SDL_MOUSEBUTTONUP:

   388

			if (_rightclick_emulate) {

   389

				_right_button_down = false;

   390

				_left_button_down = false;

   391

				_left_button_clicked = false;

   392

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

   393

				_left_button_down = false;

   394

				_left_button_clicked = false;

   395

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

   396

				_right_button_down = false;

   397

			}

   398

			HandleMouseEvents();

   399

			break;

   400

   401

		case SDL_ACTIVEEVENT:

   402

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

   403

   404

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

   405

				_cursor.in_window = true;

   406

			} else {

   407

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

   408

				_cursor.in_window = false;

   409

			}

   410

			break;

   411

   412

		case SDL_QUIT: HandleExitGameRequest(); break;

   413

   414

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

   415

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

   416

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

   417

				ToggleFullScreen(!_fullscreen);

   418

			} else {

   419

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

   420

			}

   421

			break;

   422

   423

		case SDL_VIDEORESIZE: {

   424

			int w = max(ev.resize.w, 64);

   425

			int h = max(ev.resize.h, 64);

   426

			ChangeResInGame(w, h);

   427

			break;

   428

		}

   429

	}

   430

	return -1;

   431

}

   432

   433

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

   434

{

   435

	char buf[30];

   436

   437

	const char *s = SdlOpen(SDL_INIT_VIDEO);

   438

	if (s != NULL) return s;

   439

   440

	SDL_CALL SDL_VideoDriverName(buf, 30);

   441

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

   442

   443

	GetVideoModes();

   445

	MarkWholeScreenDirty();

   446

   447

	SDL_CALL SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);

   448

	SDL_CALL SDL_EnableUNICODE(1);

   449

	return NULL;

   450

}

   451

   452

void VideoDriver_SDL::Stop()

   453

{

   454

	SdlClose(SDL_INIT_VIDEO);

   455

}

   456

   457

void VideoDriver_SDL::MainLoop()

   458

{

   459

	uint32 cur_ticks = SDL_CALL SDL_GetTicks();

   460

	uint32 last_cur_ticks = cur_ticks;

   461

	uint32 next_tick = cur_ticks + 30;

   462

	uint32 pal_tick = 0;

   463

	uint32 mod;

   464

	int numkeys;

   465

	Uint8 *keys;

   466

   467

	for (;;) {

   468

		uint32 prev_cur_ticks = cur_ticks; // to check for wrapping

   469

		InteractiveRandom(); // randomness

   470

   471

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

   472

		if (_exit_game) return;

   473

   474

		mod = SDL_CALL SDL_GetModState();

   475

		keys = SDL_CALL SDL_GetKeyState(&numkeys);

   476

#if defined(_DEBUG)

   477

		if (_shift_pressed)

   478

#else

   479

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

   480

		 * to switch to another application */

   481

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

   482

#endif

   483

		{

   484

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

   485

		} else if (_fast_forward & 2) {

   486

			_fast_forward = 0;

   487

		}

   488

   489

		cur_ticks = SDL_CALL SDL_GetTicks();

   490

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