summaryrefslogtreecommitdiff
path: root/video/sdl_v.c
blob: d94819dedf59091316ffddaabca53a4a4f619e66 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
/* $Id$ */

#include "../stdafx.h"

#ifdef WITH_SDL

#include "../openttd.h"
#include "../debug.h"
#include "../functions.h"
#include "../gfx.h"
#include "../macros.h"
#include "../sdl.h"
#include "../window.h"
#include "../network.h"
#include "../variables.h"
#include "sdl_v.h"
#include <SDL.h>

static SDL_Surface *_sdl_screen;
static bool _all_modes;

#define MAX_DIRTY_RECTS 100
static SDL_Rect _dirty_rects[MAX_DIRTY_RECTS];
static int _num_dirty_rects;

static void SdlVideoMakeDirty(int left, int top, int width, int height)
{
	if (_num_dirty_rects < MAX_DIRTY_RECTS) {
		_dirty_rects[_num_dirty_rects].x = left;
		_dirty_rects[_num_dirty_rects].y = top;
		_dirty_rects[_num_dirty_rects].w = width;
		_dirty_rects[_num_dirty_rects].h = height;
	}
	_num_dirty_rects++;
}

static void UpdatePalette(uint start, uint count)
{
	SDL_Color pal[256];
	uint i;

	for (i = 0; i != count; i++) {
		pal[i].r = _cur_palette[start + i].r;
		pal[i].g = _cur_palette[start + i].g;
		pal[i].b = _cur_palette[start + i].b;
		pal[i].unused = 0;
	}

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

static void InitPalette(void)
{
	UpdatePalette(0, 256);
}

static void CheckPaletteAnim(void)
{
	if (_pal_last_dirty != -1) {
		UpdatePalette(_pal_first_dirty, _pal_last_dirty - _pal_first_dirty + 1);
		_pal_last_dirty = -1;
	}
}

static void DrawSurfaceToScreen(void)
{
	int n = _num_dirty_rects;
	if (n != 0) {
		_num_dirty_rects = 0;
		if (n > MAX_DIRTY_RECTS)
			SDL_CALL SDL_UpdateRect(_sdl_screen, 0, 0, 0, 0);
		else
			SDL_CALL SDL_UpdateRects(_sdl_screen, n, _dirty_rects);
	}
}

static const uint16 default_resolutions[][2] = {
	{ 640,  480},
	{ 800,  600},
	{1024,  768},
	{1152,  864},
	{1280,  800},
	{1280,  960},
	{1280, 1024},
	{1400, 1050},
	{1600, 1200},
	{1680, 1050},
	{1920, 1200}
};

static void GetVideoModes(void)
{
	int i;
	SDL_Rect **modes;

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

	if (modes == NULL)
		error("sdl: no modes available");

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

	if (_all_modes) {
		// all modes available, put some default ones here
		memcpy(_resolutions, default_resolutions, sizeof(default_resolutions));
		_num_resolutions = lengthof(default_resolutions);
	} else {
		int n = 0;
		for (i = 0; modes[i]; i++) {
			int w = modes[i]->w;
			int h = modes[i]->h;
			if (IS_INT_INSIDE(w, 640, MAX_SCREEN_WIDTH + 1) &&
					IS_INT_INSIDE(h, 480, MAX_SCREEN_HEIGHT + 1)) {
				int j;
				for (j = 0; j < n; j++) {
					if (_resolutions[j][0] == w && _resolutions[j][1] == h) break;
				}

				if (j == n) {
					_resolutions[j][0] = w;
					_resolutions[j][1] = h;
					if (++n == lengthof(_resolutions)) break;
				}
			}
		}
		_num_resolutions = n;
		SortResolutions(_num_resolutions);
	}
}

static void GetAvailableVideoMode(int *w, int *h)
{
	int i;
	int best;
	uint delta;

	// all modes available?
	if (_all_modes) return;

	// is the wanted mode among the available modes?
	for (i = 0; i != _num_resolutions; i++) {
		if (*w == _resolutions[i][0] && *h == _resolutions[i][1]) return;
	}

	// use the closest possible resolution
	best = 0;
	delta = abs((_resolutions[0][0] - *w) * (_resolutions[0][1] - *h));
	for (i = 1; i != _num_resolutions; ++i) {
		uint newdelta = abs((_resolutions[i][0] - *w) * (_resolutions[i][1] - *h));
		if (newdelta < delta) {
			best = i;
			delta = newdelta;
		}
	}
	*w = _resolutions[best][0];
	*h = _resolutions[best][1];
}

#ifndef ICON_DIR
#define ICON_DIR "media"
#endif

#ifdef WIN32
/* Let's redefine the LoadBMP macro with because we are dynamically
 * loading SDL and need to 'SDL_CALL' all functions */
#undef SDL_LoadBMP
#define SDL_LoadBMP(file)	SDL_LoadBMP_RW(SDL_CALL SDL_RWFromFile(file, "rb"), 1)
#endif

static bool CreateMainSurface(int w, int h)
{
	extern const char _openttd_revision[];
	SDL_Surface *newscreen, *icon;
	char caption[50];

	GetAvailableVideoMode(&w, &h);

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

	/* Give the application an icon */
	icon = SDL_CALL SDL_LoadBMP(ICON_DIR PATHSEP "openttd.32.bmp");
	if (icon != NULL) {
		/* Get the colourkey, which will be magenta */
		uint32 rgbmap = SDL_CALL SDL_MapRGB(icon->format, 255, 0, 255);

		SDL_CALL SDL_SetColorKey(icon, SDL_SRCCOLORKEY, rgbmap);
		SDL_CALL SDL_WM_SetIcon(icon, NULL);
		SDL_CALL SDL_FreeSurface(icon);
	}

	// DO NOT CHANGE TO HWSURFACE, IT DOES NOT WORK
	newscreen = SDL_CALL SDL_SetVideoMode(w, h, 8, SDL_SWSURFACE | SDL_HWPALETTE | (_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE));
	if (newscreen == NULL)
		return false;

	_screen.width = newscreen->w;
	_screen.height = newscreen->h;
	_screen.pitch = newscreen->pitch;

	_sdl_screen = newscreen;
	InitPalette();

	snprintf(caption, sizeof(caption), "OpenTTD %s", _openttd_revision);
	SDL_CALL SDL_WM_SetCaption(caption, caption);
	SDL_CALL SDL_ShowCursor(0);

	GameSizeChanged();

	return true;
}

typedef struct VkMapping {
	uint16 vk_from;
	byte vk_count;
	byte map_to;
} VkMapping;

#define AS(x, z) {x, 0, z}
#define AM(x, y, z, w) {x, y - x, z}

static const VkMapping _vk_mapping[] = {
	// Pageup stuff + up/down
	AM(SDLK_PAGEUP, SDLK_PAGEDOWN, WKC_PAGEUP, WKC_PAGEDOWN),
	AS(SDLK_UP,     WKC_UP),
	AS(SDLK_DOWN,   WKC_DOWN),
	AS(SDLK_LEFT,   WKC_LEFT),
	AS(SDLK_RIGHT,  WKC_RIGHT),

	AS(SDLK_HOME,   WKC_HOME),
	AS(SDLK_END,    WKC_END),

	AS(SDLK_INSERT, WKC_INSERT),
	AS(SDLK_DELETE, WKC_DELETE),

	// Map letters & digits
	AM(SDLK_a, SDLK_z, 'A', 'Z'),
	AM(SDLK_0, SDLK_9, '0', '9'),

	AS(SDLK_ESCAPE,    WKC_ESC),
	AS(SDLK_PAUSE,     WKC_PAUSE),
	AS(SDLK_BACKSPACE, WKC_BACKSPACE),

	AS(SDLK_SPACE,     WKC_SPACE),
	AS(SDLK_RETURN,    WKC_RETURN),
	AS(SDLK_TAB,       WKC_TAB),

	// Function keys
	AM(SDLK_F1, SDLK_F12, WKC_F1, WKC_F12),

	// Numeric part.
	// What is the virtual keycode for numeric enter??
	AM(SDLK_KP0, SDLK_KP9, WKC_NUM_0, WKC_NUM_9),
	AS(SDLK_KP_DIVIDE,   WKC_NUM_DIV),
	AS(SDLK_KP_MULTIPLY, WKC_NUM_MUL),
	AS(SDLK_KP_MINUS,    WKC_NUM_MINUS),
	AS(SDLK_KP_PLUS,     WKC_NUM_PLUS),
	AS(SDLK_KP_ENTER,    WKC_NUM_ENTER),
	AS(SDLK_KP_PERIOD,   WKC_NUM_DECIMAL)
};

static uint32 ConvertSdlKeyIntoMy(SDL_keysym *sym)
{
	const VkMapping *map;
	uint key = 0;

	for (map = _vk_mapping; map != endof(_vk_mapping); ++map) {
		if ((uint)(sym->sym - map->vk_from) <= map->vk_count) {
			key = sym->sym - map->vk_from + map->map_to;
			break;
		}
	}

	// check scancode for BACKQUOTE key, because we want the key left of "1", not anything else (on non-US keyboards)
#if defined(WIN32) || defined(__OS2__)
	if (sym->scancode == 41) key = WKC_BACKQUOTE;
#elif defined(__APPLE__)
	if (sym->scancode == 10) key = WKC_BACKQUOTE;
#elif defined(__MORPHOS__)
	if (sym->scancode == 0)  key = WKC_BACKQUOTE;  // yes, that key is code '0' under MorphOS :)
#elif defined(__BEOS__)
	if (sym->scancode == 17) key = WKC_BACKQUOTE;
#elif defined(__SVR4) && defined(__sun)
	if (sym->scancode == 60) key = WKC_BACKQUOTE;
	if (sym->scancode == 49) key = WKC_BACKSPACE;
#elif defined(__sgi__)
	if (sym->scancode == 22) key = WKC_BACKQUOTE;
#else
	if (sym->scancode == 49) key = WKC_BACKQUOTE;
#endif

	// META are the command keys on mac
	if (sym->mod & KMOD_META)  key |= WKC_META;
	if (sym->mod & KMOD_SHIFT) key |= WKC_SHIFT;
	if (sym->mod & KMOD_CTRL)  key |= WKC_CTRL;
	if (sym->mod & KMOD_ALT)   key |= WKC_ALT;
	// these two lines really help porting hotkey combos. Uncomment to use -- Bjarni
#if 0
	DEBUG(driver, 0, "Scancode character pressed %u", sym->scancode);
	DEBUG(driver, 0, "Unicode character pressed %u", sym->unicode);
#endif
	return (key << 16) + sym->unicode;
}

static int PollEvent(void)
{
	SDL_Event ev;

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

	switch (ev.type) {
		case SDL_MOUSEMOTION:
			if (_cursor.fix_at) {
				int dx = ev.motion.x - _cursor.pos.x;
				int dy = ev.motion.y - _cursor.pos.y;
				if (dx != 0 || dy != 0) {
					_cursor.delta.x += dx;
					_cursor.delta.y += dy;
					SDL_CALL SDL_WarpMouse(_cursor.pos.x, _cursor.pos.y);
				}
			} else {
				_cursor.delta.x = ev.motion.x - _cursor.pos.x;
				_cursor.delta.y = ev.motion.y - _cursor.pos.y;
				_cursor.pos.x = ev.motion.x;
				_cursor.pos.y = ev.motion.y;
				_cursor.dirty = true;
			}
			HandleMouseEvents();
			break;

		case SDL_MOUSEBUTTONDOWN:
			if (_rightclick_emulate && SDL_CALL SDL_GetModState() & KMOD_CTRL) {
				ev.button.button = SDL_BUTTON_RIGHT;
			}

			switch (ev.button.button) {
				case SDL_BUTTON_LEFT:
					_left_button_down = true;
					break;

				case SDL_BUTTON_RIGHT:
					_right_button_down = true;
					_right_button_clicked = true;
					break;

				case SDL_BUTTON_WHEELUP:   _cursor.wheel--; break;
				case SDL_BUTTON_WHEELDOWN: _cursor.wheel++; break;

				default: break;
			}
			HandleMouseEvents();
			break;

		case SDL_MOUSEBUTTONUP:
			if (_rightclick_emulate) {
				_right_button_down = false;
				_left_button_down = false;
				_left_button_clicked = false;
			} else if (ev.button.button == SDL_BUTTON_LEFT) {
				_left_button_down = false;
				_left_button_clicked = false;
			} else if (ev.button.button == SDL_BUTTON_RIGHT) {
				_right_button_down = false;
			}
			HandleMouseEvents();
			break;

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

			if (ev.active.gain) { // mouse entered the window, enable cursor
				_cursor.in_window = true;
			} else {
				UndrawMouseCursor(); // mouse left the window, undraw cursor
				_cursor.in_window = false;
			}
			break;

		case SDL_QUIT: HandleExitGameRequest(); break;

		case SDL_KEYDOWN: /* Toggle full-screen on ALT + ENTER/F */
			if ((ev.key.keysym.mod & (KMOD_ALT | KMOD_META)) &&
					(ev.key.keysym.sym == SDLK_RETURN || ev.key.keysym.sym == SDLK_f)) {
				ToggleFullScreen(!_fullscreen);
			} else {
				HandleKeypress(ConvertSdlKeyIntoMy(&ev.key.keysym));
			}
			break;

		case SDL_VIDEORESIZE: {
			int w = clamp(ev.resize.w, 64, MAX_SCREEN_WIDTH);
			int h = clamp(ev.resize.h, 64, MAX_SCREEN_HEIGHT);
			ChangeResInGame(w, h);
			break;
		}
	}
	return -1;
}

static const char *SdlVideoStart(const char * const *parm)
{
	char buf[30];

	const char *s = SdlOpen(SDL_INIT_VIDEO);
	if (s != NULL) return s;

	SDL_CALL SDL_VideoDriverName(buf, 30);
	DEBUG(driver, 1, "SDL: using driver '%s'", buf);

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

	SDL_CALL SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
	SDL_CALL SDL_EnableUNICODE(1);
	return NULL;
}

static void SdlVideoStop(void)
{
	SdlClose(SDL_INIT_VIDEO);
}

static void SdlVideoMainLoop(void)
{
	uint32 next_tick = SDL_CALL SDL_GetTicks() + 30;
	uint32 cur_ticks;
	uint32 pal_tick = 0;
	uint32 mod;
	int numkeys;
	Uint8 *keys;

	for (;;) {
		InteractiveRandom(); // randomness

		while (PollEvent() == -1) {}
		if (_exit_game) return;

		mod = SDL_CALL SDL_GetModState();
		keys = SDL_CALL SDL_GetKeyState(&numkeys);
#if defined(_DEBUG)
		if (_shift_pressed)
#else
		/* Speedup when pressing tab, except when using ALT+TAB
		 * to switch to another application */
		if (keys[SDLK_TAB] && (mod & KMOD_ALT) == 0)
#endif
		{
			if (!_networking && _game_mode != GM_MENU) _fast_forward |= 2;
		} else if (_fast_forward & 2) {
			_fast_forward = 0;
		}

		cur_ticks = SDL_CALL SDL_GetTicks();
		if ((_fast_forward && !_pause) || cur_ticks > next_tick)
			next_tick = cur_ticks;

		if (cur_ticks == next_tick) {
			next_tick += 30;

			_ctrl_pressed  = !!(mod & KMOD_CTRL);
			_shift_pressed = !!(mod & KMOD_SHIFT);
#ifdef _DEBUG
			_dbg_screen_rect = !!(mod & KMOD_CAPS);
#endif

			// determine which directional keys are down
			_dirkeys =
				(keys[SDLK_LEFT]  ? 1 : 0) |
				(keys[SDLK_UP]    ? 2 : 0) |
				(keys[SDLK_RIGHT] ? 4 : 0) |
				(keys[SDLK_DOWN]  ? 8 : 0);
			GameLoop();

			_screen.dst_ptr = _sdl_screen->pixels;
			UpdateWindows();
			if (++pal_tick > 4) {
				CheckPaletteAnim();
				pal_tick = 1;
			}
			DrawSurfaceToScreen();
		} else {
			SDL_CALL SDL_Delay(1);
			_screen.dst_ptr = _sdl_screen->pixels;
			DrawTextMessage();
			DrawMouseCursor();
			DrawSurfaceToScreen();
		}
	}
}

static bool SdlVideoChangeRes(int w, int h)
{
	return CreateMainSurface(w, h);
}

static void SdlVideoFullScreen(bool full_screen)
{
	_fullscreen = full_screen;
	GetVideoModes(); // get the list of available video modes
	if (_num_resolutions == 0 || !_video_driver->change_resolution(_cur_resolution[0], _cur_resolution[1])) {
		// switching resolution failed, put back full_screen to original status
		_fullscreen ^= true;
	}
}

const HalVideoDriver _sdl_video_driver = {
	SdlVideoStart,
	SdlVideoStop,
	SdlVideoMakeDirty,
	SdlVideoMainLoop,
	SdlVideoChangeRes,
	SdlVideoFullScreen,
};

#endif