1 /***********************************************************
2 * Artsoft Retro-Game Library                               *
3 *----------------------------------------------------------*
4 * (c) 1994-2006 Artsoft Entertainment                      *
5 *               Holger Schemel                             *
6 *               Detmolder Strasse 189                      *
7 *               33604 Bielefeld                            *
8 *               Germany                                    *
9 *               e-mail: info@artsoft.org                   *
10 *----------------------------------------------------------*
11 * system.h                                                 *
12 ***********************************************************/
13 
14 #ifndef SYSTEM_H
15 #define SYSTEM_H
16 
17 #include "platform.h"
18 #include "types.h"
19 
20 
21 #if defined(PLATFORM_MACOSX)
22 #include "macosx.h"
23 #elif defined(PLATFORM_WIN32)
24 #include "windows.h"
25 #elif defined(PLATFORM_MSDOS)
26 #include "msdos.h"
27 #endif
28 
29 #if defined(TARGET_SDL)
30 #include "sdl.h"
31 #elif defined(TARGET_X11)
32 #include "x11.h"
33 #endif
34 
35 
36 /* the additional 'b' is needed for Win32 to open files in binary mode */
37 #define MODE_READ			"rb"
38 #define MODE_WRITE			"wb"
39 #define MODE_APPEND			"ab"
40 
41 #define DEFAULT_DEPTH			0
42 
43 #define BLIT_OPAQUE			0
44 #define BLIT_MASKED			1
45 #define BLIT_INVERSE			2
46 #define BLIT_ON_BACKGROUND		3
47 
48 #define FULLSCREEN_NOT_AVAILABLE	FALSE
49 #define FULLSCREEN_AVAILABLE		TRUE
50 
51 /* default input keys */
52 #define DEFAULT_KEY_LEFT		KSYM_Left
53 #define DEFAULT_KEY_RIGHT		KSYM_Right
54 #define DEFAULT_KEY_UP			KSYM_Up
55 #define DEFAULT_KEY_DOWN		KSYM_Down
56 #if defined(PLATFORM_MACOSX)
57 #define DEFAULT_KEY_SNAP		KSYM_Control_L
58 #define DEFAULT_KEY_DROP		KSYM_KP_Enter
59 #else
60 #define DEFAULT_KEY_SNAP		KSYM_Control_L
61 #define DEFAULT_KEY_DROP		KSYM_Control_R
62 #endif
63 #define DEFAULT_KEY_OKAY		KSYM_Return
64 #define DEFAULT_KEY_CANCEL		KSYM_Escape
65 
66 /* default shortcut keys */
67 #define DEFAULT_KEY_SAVE_GAME		KSYM_F1
68 #define DEFAULT_KEY_LOAD_GAME		KSYM_F2
69 #define DEFAULT_KEY_TOGGLE_PAUSE	KSYM_space
70 #define DEFAULT_KEY_FOCUS_PLAYER_1	KSYM_F5
71 #define DEFAULT_KEY_FOCUS_PLAYER_2	KSYM_F6
72 #define DEFAULT_KEY_FOCUS_PLAYER_3	KSYM_F7
73 #define DEFAULT_KEY_FOCUS_PLAYER_4	KSYM_F8
74 #define DEFAULT_KEY_FOCUS_PLAYER_ALL	KSYM_F9
75 #define DEFAULT_KEY_TAPE_EJECT		KSYM_UNDEFINED
76 #define DEFAULT_KEY_TAPE_STOP		KSYM_UNDEFINED
77 #define DEFAULT_KEY_TAPE_PAUSE		KSYM_UNDEFINED
78 #define DEFAULT_KEY_TAPE_RECORD		KSYM_UNDEFINED
79 #define DEFAULT_KEY_TAPE_PLAY		KSYM_UNDEFINED
80 #define DEFAULT_KEY_SOUND_SIMPLE	KSYM_UNDEFINED
81 #define DEFAULT_KEY_SOUND_LOOPS		KSYM_UNDEFINED
82 #define DEFAULT_KEY_SOUND_MUSIC		KSYM_UNDEFINED
83 
84 /* values for key_status */
85 #define KEY_NOT_PRESSED			FALSE
86 #define KEY_RELEASED			FALSE
87 #define KEY_PRESSED			TRUE
88 
89 /* values for button status */
90 #define MB_NOT_PRESSED			FALSE
91 #define MB_NOT_RELEASED			TRUE
92 #define MB_RELEASED			FALSE
93 #define MB_PRESSED			TRUE
94 #define MB_MENU_CHOICE			FALSE
95 #define MB_MENU_MARK			TRUE
96 #define MB_MENU_INITIALIZE		(-1)
97 #define MB_MENU_LEAVE			(-2)
98 #define MB_LEFTBUTTON			1
99 #define MB_MIDDLEBUTTON			2
100 #define MB_RIGHTBUTTON			3
101 #define MB_WHEEL_UP			4
102 #define MB_WHEEL_DOWN			5
103 #define MB_WHEEL_LEFT			6
104 #define MB_WHEEL_RIGHT			7
105 #define IS_WHEEL_BUTTON_VERTICAL(b)	((b) >= MB_WHEEL_UP &&		\
106 					 (b) <= MB_WHEEL_DOWN)
107 #define IS_WHEEL_BUTTON_HORIZONTAL(b)	((b) >= MB_WHEEL_LEFT &&	\
108 					 (b) <= MB_WHEEL_RIGHT)
109 #define IS_WHEEL_BUTTON(b)		((b) >= MB_WHEEL_UP &&		\
110 					 (b) <= MB_WHEEL_DOWN)
111 #define DEFAULT_WHEEL_STEPS		3
112 
113 /* values for move directions */
114 #define MV_BIT_LEFT			0
115 #define MV_BIT_RIGHT			1
116 #define MV_BIT_UP			2
117 #define MV_BIT_DOWN	       		3
118 
119 #define NUM_DIRECTIONS			4
120 
121 /* diagonal movement directions are used in a different contect than buttons */
122 #define MV_BIT_UPLEFT			4
123 #define MV_BIT_UPRIGHT			5
124 #define MV_BIT_DOWNLEFT			6
125 #define MV_BIT_DOWNRIGHT		7
126 
127 #define NUM_DIRECTIONS_FULL		8
128 
129 /* values for special "button" bitmasks */
130 #define BUTTON_1			4
131 #define BUTTON_2			5
132 
133 /* values for special "focus player" bitmasks */
134 #define BIT_SET_FOCUS			6
135 
136 /* values for move directions and special "button" key bitmasks */
137 #define MV_NONE			0
138 #define MV_LEFT			(1 << MV_BIT_LEFT)
139 #define MV_RIGHT		(1 << MV_BIT_RIGHT)
140 #define MV_UP			(1 << MV_BIT_UP)
141 #define MV_DOWN	       		(1 << MV_BIT_DOWN)
142 
143 #define MV_UPLEFT		(MV_UP   | MV_LEFT)
144 #define MV_UPRIGHT		(MV_UP   | MV_RIGHT)
145 #define MV_DOWNLEFT		(MV_DOWN | MV_LEFT)
146 #define MV_DOWNRIGHT		(MV_DOWN | MV_RIGHT)
147 
148 #define MV_HORIZONTAL		(MV_LEFT | MV_RIGHT)
149 #define MV_VERTICAL		(MV_UP   | MV_DOWN)
150 #define MV_ALL_DIRECTIONS	(MV_LEFT | MV_RIGHT | MV_UP | MV_DOWN)
151 #define MV_ANY_DIRECTION	(MV_ALL_DIRECTIONS)
152 #define MV_NO_DIRECTION		(MV_NONE)
153 
154 #define KEY_BUTTON_1		(1 << BUTTON_1)
155 #define KEY_BUTTON_2		(1 << BUTTON_2)
156 #define KEY_MOTION		(MV_LEFT | MV_RIGHT | MV_UP | MV_DOWN)
157 #define KEY_BUTTON		(KEY_BUTTON_1 | KEY_BUTTON_2)
158 #define KEY_ACTION		(KEY_MOTION | KEY_BUTTON)
159 
160 #define KEY_SET_FOCUS		(1 << BIT_SET_FOCUS)
161 
162 #define MV_DIR_FROM_BIT(x)	((x) < NUM_DIRECTIONS ? 1 << (x) :	  \
163 				 (x) == MV_BIT_UPLEFT    ? MV_UPLEFT    : \
164 				 (x) == MV_BIT_UPRIGHT   ? MV_UPRIGHT   : \
165 				 (x) == MV_BIT_DOWNLEFT  ? MV_DOWNLEFT  : \
166 				 (x) == MV_BIT_DOWNRIGHT ? MV_DOWNRIGHT : \
167 				 MV_NONE)
168 
169 #define MV_DIR_TO_BIT(x)	((x) == MV_LEFT      ? MV_BIT_LEFT      : \
170 				 (x) == MV_RIGHT     ? MV_BIT_RIGHT     : \
171 				 (x) == MV_UP        ? MV_BIT_UP        : \
172 				 (x) == MV_DOWN      ? MV_BIT_DOWN      : \
173 				 (x) == MV_UPLEFT    ? MV_BIT_UPLEFT    : \
174 				 (x) == MV_UPRIGHT   ? MV_BIT_UPRIGHT   : \
175 				 (x) == MV_DOWNLEFT  ? MV_BIT_DOWNLEFT  : \
176 				 (x) == MV_DOWNRIGHT ? MV_BIT_DOWNRIGHT : \
177 				 MV_BIT_DOWN)
178 
179 #define MV_DIR_OPPOSITE(x)	((x) == MV_LEFT      ? MV_RIGHT     : \
180 				 (x) == MV_RIGHT     ? MV_LEFT      : \
181 				 (x) == MV_UP        ? MV_DOWN      : \
182 				 (x) == MV_DOWN      ? MV_UP        : \
183 				 (x) == MV_UPLEFT    ? MV_DOWNRIGHT : \
184 				 (x) == MV_UPRIGHT   ? MV_DOWNLEFT  : \
185 				 (x) == MV_DOWNLEFT  ? MV_UPRIGHT   : \
186 				 (x) == MV_DOWNRIGHT ? MV_UPLEFT    : \
187 				 MV_NONE)
188 
189 /* values for animation mode (frame order and direction) */
190 #define ANIM_NONE		0
191 #define ANIM_LOOP		(1 << 0)
192 #define ANIM_LINEAR		(1 << 1)
193 #define ANIM_PINGPONG		(1 << 2)
194 #define ANIM_PINGPONG2		(1 << 3)
195 #define ANIM_RANDOM		(1 << 4)
196 #define ANIM_CE_VALUE		(1 << 5)
197 #define ANIM_CE_SCORE		(1 << 6)
198 #define ANIM_CE_DELAY		(1 << 7)
199 #define ANIM_REVERSE		(1 << 8)
200 #define ANIM_OPAQUE_PLAYER	(1 << 9)
201 
202 /* values for special (non game element) animation modes */
203 #define ANIM_HORIZONTAL		(1 << 10)
204 #define ANIM_VERTICAL		(1 << 11)
205 #define ANIM_CENTERED		(1 << 12)
206 #define ANIM_STATIC_PANEL	(1 << 13)
207 
208 #define ANIM_DEFAULT		ANIM_LOOP
209 
210 /* values for special drawing styles (currently only for crumbled graphics) */
211 #define STYLE_NONE		0
212 #define STYLE_ACCURATE_BORDERS	(1 << 0)
213 #define STYLE_INNER_CORNERS	(1 << 1)
214 
215 #define STYLE_DEFAULT		STYLE_NONE
216 
217 /* values for fade mode */
218 #define FADE_TYPE_NONE		0
219 #define FADE_TYPE_FADE_IN	(1 << 0)
220 #define FADE_TYPE_FADE_OUT	(1 << 1)
221 #define FADE_TYPE_TRANSFORM	(1 << 2)
222 #define FADE_TYPE_CROSSFADE	(1 << 3)
223 #define FADE_TYPE_MELT		(1 << 4)
224 #define FADE_TYPE_SKIP		(1 << 5)
225 
226 #define FADE_MODE_NONE		(FADE_TYPE_NONE)
227 #define FADE_MODE_FADE_IN	(FADE_TYPE_FADE_IN)
228 #define FADE_MODE_FADE_OUT	(FADE_TYPE_FADE_OUT)
229 #define FADE_MODE_FADE		(FADE_TYPE_FADE_IN | FADE_TYPE_FADE_OUT)
230 #define FADE_MODE_TRANSFORM	(FADE_TYPE_TRANSFORM | FADE_TYPE_FADE_IN)
231 #define FADE_MODE_CROSSFADE	(FADE_MODE_TRANSFORM | FADE_TYPE_CROSSFADE)
232 #define FADE_MODE_MELT		(FADE_MODE_TRANSFORM | FADE_TYPE_MELT)
233 #define FADE_MODE_SKIP_FADE_IN	(FADE_TYPE_SKIP | FADE_TYPE_FADE_IN)
234 #define FADE_MODE_SKIP_FADE_OUT	(FADE_TYPE_SKIP | FADE_TYPE_FADE_OUT)
235 
236 #define FADE_MODE_DEFAULT	FADE_MODE_FADE
237 
238 /* values for text alignment */
239 #define ALIGN_LEFT		(1 << 0)
240 #define ALIGN_RIGHT		(1 << 1)
241 #define ALIGN_CENTER		(1 << 2)
242 #define ALIGN_DEFAULT		ALIGN_LEFT
243 
244 #define VALIGN_TOP		(1 << 0)
245 #define VALIGN_BOTTOM		(1 << 1)
246 #define VALIGN_MIDDLE		(1 << 2)
247 #define VALIGN_DEFAULT		VALIGN_TOP
248 
249 #define ALIGNED_XPOS(x,w,a)	((a) == ALIGN_CENTER  ? (x) - (w) / 2 :	\
250 				 (a) == ALIGN_RIGHT   ? (x) - (w) : (x))
251 #define ALIGNED_YPOS(y,h,v)	((v) == VALIGN_MIDDLE ? (y) - (h) / 2 :	\
252 				 (v) == VALIGN_BOTTOM ? (y) - (h) : (y))
253 #define ALIGNED_TEXT_XPOS(p)	ALIGNED_XPOS((p)->x, (p)->width,  (p)->align)
254 #define ALIGNED_TEXT_YPOS(p)	ALIGNED_YPOS((p)->y, (p)->height, (p)->valign)
255 
256 /* values for redraw_mask */
257 #define REDRAW_NONE		(0)
258 #define REDRAW_ALL		(1 << 0)
259 #define REDRAW_FIELD		(1 << 1)
260 #define REDRAW_TILES		(1 << 2)
261 #define REDRAW_DOOR_1		(1 << 3)
262 #define REDRAW_VIDEO_1		(1 << 4)
263 #define REDRAW_VIDEO_2		(1 << 5)
264 #define REDRAW_VIDEO_3		(1 << 6)
265 #define REDRAW_MICROLEVEL	(1 << 7)
266 #define REDRAW_MICROLABEL	(1 << 8)
267 #define REDRAW_FROM_BACKBUFFER	(1 << 9)
268 #define REDRAW_DOOR_2		(REDRAW_VIDEO_1 | \
269 				 REDRAW_VIDEO_2 | \
270 				 REDRAW_VIDEO_3)
271 #define REDRAW_DOOR_3		(1 << 10)
272 #define REDRAW_DOORS		(REDRAW_DOOR_1 | \
273 				 REDRAW_DOOR_2 | \
274 				 REDRAW_DOOR_3)
275 #define REDRAW_MAIN		(REDRAW_FIELD | \
276 				 REDRAW_TILES | \
277 				 REDRAW_MICROLEVEL)
278 #define REDRAW_FPS		(1 << 11)
279 #define REDRAWTILES_THRESHOLD	(SCR_FIELDX * SCR_FIELDY / 2)
280 
281 #define IN_GFX_SCREEN(x, y)	(x >= gfx.sx && x < gfx.sx + gfx.sxsize && \
282 				 y >= gfx.sy && y < gfx.sy + gfx.sysize)
283 #define IN_GFX_DOOR(x, y)	(x >= gfx.dx && x < gfx.dx + gfx.dxsize && \
284 				 y >= gfx.dy && y < gfx.dy + gfx.dysize)
285 #define IN_GFX_VIDEO(x, y)	(x >= gfx.vx && x < gfx.vx + gfx.vxsize && \
286 				 y >= gfx.vy && y < gfx.vy + gfx.vysize)
287 
288 /* values for mouse cursor */
289 #define CURSOR_DEFAULT		0
290 #define CURSOR_NONE		1
291 #define CURSOR_PLAYFIELD	2
292 
293 /* fundamental game speed values */
294 #define ONE_SECOND_DELAY	1000	/* delay value for one second */
295 #define GAME_FRAME_DELAY	20	/* frame delay in milliseconds */
296 #define FFWD_FRAME_DELAY	10	/* 200% speed for fast forward */
297 #define FRAMES_PER_SECOND	(ONE_SECOND_DELAY / GAME_FRAME_DELAY)
298 
299 /* maximum playfield size supported by libgame functions */
300 #define MAX_PLAYFIELD_WIDTH	128
301 #define MAX_PLAYFIELD_HEIGHT	128
302 
303 /* maximum number of parallel players supported by libgame functions */
304 #define MAX_PLAYERS		4
305 
306 /* maximum allowed length of player name */
307 #define MAX_PLAYER_NAME_LEN	10
308 
309 /* default name for empty highscore entry */
310 #define EMPTY_PLAYER_NAME	"no name"
311 
312 /* default name for unknown player names */
313 #define ANONYMOUS_NAME		"anonymous"
314 
315 /* default for other unknown names */
316 #define UNKNOWN_NAME		"unknown"
317 
318 /* default name for new levels */
319 #define NAMELESS_LEVEL_NAME	"nameless level"
320 
321 /* default text for non-existant artwork */
322 #define NOT_AVAILABLE		"(not available)"
323 
324 /* default value for undefined filename */
325 #define UNDEFINED_FILENAME	"[NONE]"
326 
327 /* default value for undefined parameter */
328 #define ARG_DEFAULT		"[DEFAULT]"
329 
330 /* default values for undefined configuration file parameters */
331 #define ARG_UNDEFINED		"-1000000"
332 #define ARG_UNDEFINED_VALUE	(atoi(ARG_UNDEFINED))
333 
334 /* definitions for game sub-directories */
335 #ifndef RO_GAME_DIR
336 #define RO_GAME_DIR		"."
337 #endif
338 
339 #ifndef RW_GAME_DIR
340 #define RW_GAME_DIR		"."
341 #endif
342 
343 #define RO_BASE_PATH		RO_GAME_DIR
344 #define RW_BASE_PATH		RW_GAME_DIR
345 
346 /* directory names */
347 #define GRAPHICS_DIRECTORY	"graphics"
348 #define SOUNDS_DIRECTORY	"sounds"
349 #define MUSIC_DIRECTORY		"music"
350 #define LEVELS_DIRECTORY	"levels"
351 #define TAPES_DIRECTORY		"tapes"
352 #define SCORES_DIRECTORY	"scores"
353 #define DOCS_DIRECTORY		"docs"
354 #define CACHE_DIRECTORY		"cache"
355 
356 #if !defined(PLATFORM_MSDOS)
357 #define GFX_CLASSIC_SUBDIR	"gfx_classic"
358 #define SND_CLASSIC_SUBDIR	"snd_classic"
359 #define MUS_CLASSIC_SUBDIR	"mus_classic"
360 #else
361 #define GFX_CLASSIC_SUBDIR	"gfx_orig"
362 #define SND_CLASSIC_SUBDIR	"snd_orig"
363 #define MUS_CLASSIC_SUBDIR	"mus_orig"
364 #endif
365 
366 #if defined(CREATE_SPECIAL_EDITION_RND_JUE)
367 #define GFX_DEFAULT_SUBDIR	"jue0"
368 #define SND_DEFAULT_SUBDIR	"jue0"
369 #define MUS_DEFAULT_SUBDIR	"jue0"
370 #else
371 #define GFX_DEFAULT_SUBDIR	GFX_CLASSIC_SUBDIR
372 #define SND_DEFAULT_SUBDIR	SND_CLASSIC_SUBDIR
373 #define MUS_DEFAULT_SUBDIR	MUS_CLASSIC_SUBDIR
374 #endif
375 
376 #if defined(CREATE_SPECIAL_EDITION)
377 #define GFX_FALLBACK_FILENAME	"fallback.pcx"
378 #define SND_FALLBACK_FILENAME	"fallback.wav"
379 #define MUS_FALLBACK_FILENAME	"fallback.wav"
380 #endif
381 
382 /* file names and filename extensions */
383 #if !defined(PLATFORM_MSDOS)
384 #define LEVELSETUP_DIRECTORY	"levelsetup"
385 #define SETUP_FILENAME		"setup.conf"
386 #define LEVELSETUP_FILENAME	"levelsetup.conf"
387 #define EDITORSETUP_FILENAME	"editorsetup.conf"
388 #define EDITORCASCADE_FILENAME	"editorcascade.conf"
389 #define HELPANIM_FILENAME	"helpanim.conf"
390 #define HELPTEXT_FILENAME	"helptext.conf"
391 #define LEVELINFO_FILENAME	"levelinfo.conf"
392 #define GRAPHICSINFO_FILENAME	"graphicsinfo.conf"
393 #define SOUNDSINFO_FILENAME	"soundsinfo.conf"
394 #define MUSICINFO_FILENAME	"musicinfo.conf"
395 #define ARTWORKINFO_CACHE_FILE	"artworkinfo.cache"
396 #define LEVELFILE_EXTENSION	"level"
397 #define TAPEFILE_EXTENSION	"tape"
398 #define SCOREFILE_EXTENSION	"score"
399 #else
400 #define LEVELSETUP_DIRECTORY	"lvlsetup"
401 #define SETUP_FILENAME		"setup.cnf"
402 #define LEVELSETUP_FILENAME	"lvlsetup.cnf"
403 #define EDITORSETUP_FILENAME	"edsetup.cnf"
404 #define EDITORCASCADE_FILENAME	"edcascad.conf"
405 #define HELPANIM_FILENAME	"helpanim.cnf"
406 #define HELPTEXT_FILENAME	"helptext.cnf"
407 #define LEVELINFO_FILENAME	"lvlinfo.cnf"
408 #define GRAPHICSINFO_FILENAME	"gfxinfo.cnf"
409 #define SOUNDSINFO_FILENAME	"sndinfo.cnf"
410 #define MUSICINFO_FILENAME	"musinfo.cnf"
411 #define ARTWORKINFO_CACHE_FILE	"artinfo.cac"
412 #define LEVELFILE_EXTENSION	"lvl"
413 #define TAPEFILE_EXTENSION	"tap"
414 #define SCOREFILE_EXTENSION	"sco"
415 #endif
416 
417 #define ERROR_BASENAME		"stderr.txt"
418 
419 #define CHAR_PATH_SEPARATOR_UNIX	'/'
420 #define CHAR_PATH_SEPARATOR_DOS		'\\'
421 
422 #define STRING_PATH_SEPARATOR_UNIX	"/"
423 #define STRING_PATH_SEPARATOR_DOS	"\\"
424 
425 #define STRING_NEWLINE_UNIX		"\n"
426 #define STRING_NEWLINE_DOS		"\r\n"
427 
428 #if defined(PLATFORM_WIN32) || defined(PLATFORM_MSDOS)
429 #define CHAR_PATH_SEPARATOR	CHAR_PATH_SEPARATOR_DOS
430 #define STRING_PATH_SEPARATOR	STRING_PATH_SEPARATOR_DOS
431 #define STRING_NEWLINE		STRING_NEWLINE_DOS
432 #else
433 #define CHAR_PATH_SEPARATOR	CHAR_PATH_SEPARATOR_UNIX
434 #define STRING_PATH_SEPARATOR	STRING_PATH_SEPARATOR_UNIX
435 #define STRING_NEWLINE		STRING_NEWLINE_UNIX
436 #endif
437 
438 
439 /* areas in bitmap PIX_DOOR */
440 /* meaning in PIX_DB_DOOR: (3 PAGEs)
441    PAGEX1: 1. buffer for DOOR_1
442    PAGEX2: 2. buffer for DOOR_1
443    PAGEX3: buffer for animations
444 */
445 
446 /* these values are hard-coded to be able to use them in initialization */
447 #define DOOR_GFX_PAGE_WIDTH	100	/* should be set to "gfx.dxsize" */
448 #define DOOR_GFX_PAGE_HEIGHT	280	/* should be set to "gfx.dysize" */
449 
450 #define DOOR_GFX_PAGESIZE	(DOOR_GFX_PAGE_WIDTH)
451 #define DOOR_GFX_PAGEX1		(0 * DOOR_GFX_PAGESIZE)
452 #define DOOR_GFX_PAGEX2		(1 * DOOR_GFX_PAGESIZE)
453 #define DOOR_GFX_PAGEX3		(2 * DOOR_GFX_PAGESIZE)
454 #define DOOR_GFX_PAGEX4		(3 * DOOR_GFX_PAGESIZE)
455 #define DOOR_GFX_PAGEX5		(4 * DOOR_GFX_PAGESIZE)
456 #define DOOR_GFX_PAGEX6		(5 * DOOR_GFX_PAGESIZE)
457 #define DOOR_GFX_PAGEX7		(6 * DOOR_GFX_PAGESIZE)
458 #define DOOR_GFX_PAGEX8		(7 * DOOR_GFX_PAGESIZE)
459 #define DOOR_GFX_PAGEY1		(0)
460 #define DOOR_GFX_PAGEY2		(DOOR_GFX_PAGE_HEIGHT)
461 
462 
463 /* macros for version handling */
464 #define VERSION_MAJOR(x)	((x) / 1000000)
465 #define VERSION_MINOR(x)	(((x) % 1000000) / 10000)
466 #define VERSION_PATCH(x)	(((x) % 10000) / 100)
467 #define VERSION_BUILD(x)	((x) % 100)
468 #define VERSION_IDENT(a,b,c,d)	((a) * 1000000 + (b) * 10000 + (c) * 100 + (d))
469 
470 
471 /* macros for parent/child process identification */
472 #if defined(PLATFORM_UNIX)
473 #define IS_PARENT_PROCESS()	(audio.mixer_pid != getpid())
474 #define IS_CHILD_PROCESS()	(audio.mixer_pid == getpid())
475 #define HAS_CHILD_PROCESS()	(audio.mixer_pid > 0)
476 #else
477 #define IS_PARENT_PROCESS()	TRUE
478 #define IS_CHILD_PROCESS()	FALSE
479 #define HAS_CHILD_PROCESS()	FALSE
480 #endif
481 
482 
483 /* values for artwork type */
484 #define ARTWORK_TYPE_GRAPHICS	0
485 #define ARTWORK_TYPE_SOUNDS	1
486 #define ARTWORK_TYPE_MUSIC	2
487 
488 #define NUM_ARTWORK_TYPES	3
489 
490 
491 /* values for tree type (chosen to match artwork type) */
492 #define TREE_TYPE_UNDEFINED	-1
493 #define TREE_TYPE_GRAPHICS_DIR	ARTWORK_TYPE_GRAPHICS
494 #define TREE_TYPE_SOUNDS_DIR	ARTWORK_TYPE_SOUNDS
495 #define TREE_TYPE_MUSIC_DIR	ARTWORK_TYPE_MUSIC
496 #define TREE_TYPE_LEVEL_DIR	3
497 
498 #define NUM_TREE_TYPES		4
499 
500 #define INFOTEXT_UNDEFINED	""
501 #define INFOTEXT_GRAPHICS_DIR	"Custom Graphics"
502 #define INFOTEXT_SOUNDS_DIR	"Custom Sounds"
503 #define INFOTEXT_MUSIC_DIR	"Custom Music"
504 #define INFOTEXT_LEVEL_DIR	"Level Sets"
505 
506 #define TREE_INFOTEXT(t)	((t) == TREE_TYPE_LEVEL_DIR ?		\
507 				 INFOTEXT_LEVEL_DIR :			\
508 				 (t) == TREE_TYPE_GRAPHICS_DIR ?	\
509 				 INFOTEXT_GRAPHICS_DIR :		\
510 				 (t) == TREE_TYPE_SOUNDS_DIR ?		\
511 				 INFOTEXT_SOUNDS_DIR :			\
512 				 (t) == TREE_TYPE_MUSIC_DIR ?		\
513 				 INFOTEXT_MUSIC_DIR :			\
514 				 INFOTEXT_UNDEFINED)
515 
516 /* values for artwork handling */
517 #define LEVELDIR_ARTWORK_SET_PTR(leveldir, type)			\
518 				((type) == ARTWORK_TYPE_GRAPHICS ?	\
519 				 &(leveldir)->graphics_set :		\
520 				 (type) == ARTWORK_TYPE_SOUNDS ?	\
521 				 &(leveldir)->sounds_set :		\
522 	 			 &(leveldir)->music_set)
523 
524 #define LEVELDIR_ARTWORK_SET(leveldir, type)				\
525 				((type) == ARTWORK_TYPE_GRAPHICS ?	\
526 				 (leveldir)->graphics_set :		\
527 				 (type) == ARTWORK_TYPE_SOUNDS ?	\
528 				 (leveldir)->sounds_set :		\
529 	 			 (leveldir)->music_set)
530 
531 #define LEVELDIR_ARTWORK_PATH_PTR(leveldir, type)			\
532 				((type) == ARTWORK_TYPE_GRAPHICS ?	\
533 				 &(leveldir)->graphics_path :		\
534 				 (type) == ARTWORK_TYPE_SOUNDS ?	\
535 				 &(leveldir)->sounds_path :		\
536 				 &(leveldir)->music_path)
537 
538 #define LEVELDIR_ARTWORK_PATH(leveldir, type)				\
539 				((type) == ARTWORK_TYPE_GRAPHICS ?	\
540 				 (leveldir)->graphics_path :		\
541 				 (type) == ARTWORK_TYPE_SOUNDS ?	\
542 				 (leveldir)->sounds_path :		\
543 				 (leveldir)->music_path)
544 
545 #define SETUP_ARTWORK_SET(setup, type)					\
546 				((type) == ARTWORK_TYPE_GRAPHICS ?	\
547 				 (setup).graphics_set :			\
548 				 (type) == ARTWORK_TYPE_SOUNDS ?	\
549 				 (setup).sounds_set :			\
550 				 (setup).music_set)
551 
552 #define SETUP_OVERRIDE_ARTWORK(setup, type)				\
553 				((type) == ARTWORK_TYPE_GRAPHICS ?	\
554 				 (setup).override_level_graphics :	\
555 				 (type) == ARTWORK_TYPE_SOUNDS ?	\
556 				 (setup).override_level_sounds :	\
557 				 (setup).override_level_music)
558 
559 #define GFX_OVERRIDE_ARTWORK(type)					\
560 				((type) == ARTWORK_TYPE_GRAPHICS ?	\
561 				 gfx.override_level_graphics :		\
562 				 (type) == ARTWORK_TYPE_SOUNDS ?	\
563 				 gfx.override_level_sounds :		\
564 				 gfx.override_level_music)
565 
566 #define ARTWORK_FIRST_NODE(artwork, type)				\
567 				((type) == ARTWORK_TYPE_GRAPHICS ?	\
568 				 (artwork).gfx_first :			\
569 				 (type) == ARTWORK_TYPE_SOUNDS ?	\
570 				 (artwork).snd_first :			\
571 				 (artwork).mus_first)
572 
573 #define ARTWORK_CURRENT_IDENTIFIER_PTR(artwork, type)			\
574 				((type) == ARTWORK_TYPE_GRAPHICS ?	\
575 				 &(artwork).gfx_current_identifier :	\
576 				 (type) == ARTWORK_TYPE_SOUNDS ?	\
577 				 &(artwork).snd_current_identifier :	\
578 				 &(artwork).mus_current_identifier)
579 
580 #define ARTWORK_CURRENT_IDENTIFIER(artwork, type)			\
581 				((type) == ARTWORK_TYPE_GRAPHICS ?	\
582 				 (artwork).gfx_current_identifier :	\
583 				 (type) == ARTWORK_TYPE_SOUNDS ?	\
584 				 (artwork).snd_current_identifier :	\
585 				 (artwork).mus_current_identifier)
586 
587 #define ARTWORKINFO_FILENAME(type)					\
588 				((type) == ARTWORK_TYPE_GRAPHICS ?	\
589 				 GRAPHICSINFO_FILENAME :		\
590 				 (type) == ARTWORK_TYPE_SOUNDS ?	\
591 				 SOUNDSINFO_FILENAME :			\
592 				 (type) == ARTWORK_TYPE_MUSIC ?		\
593 				 MUSICINFO_FILENAME : "")
594 
595 #define ARTWORK_DIRECTORY(type)						\
596 				((type) == ARTWORK_TYPE_GRAPHICS ?	\
597 				 GRAPHICS_DIRECTORY :			\
598 				 (type) == ARTWORK_TYPE_SOUNDS ?	\
599 				 SOUNDS_DIRECTORY :			\
600 				 (type) == ARTWORK_TYPE_MUSIC ?		\
601 				 MUSIC_DIRECTORY : "")
602 
603 #define OPTIONS_ARTWORK_DIRECTORY(type)					\
604 				((type) == ARTWORK_TYPE_GRAPHICS ?	\
605 				 options.graphics_directory :		\
606 				 (type) == ARTWORK_TYPE_SOUNDS ?	\
607 				 options.sounds_directory :		\
608 				 (type) == ARTWORK_TYPE_MUSIC ?		\
609 				 options.music_directory : "")
610 
611 #define UPDATE_BUSY_STATE()			\
612 {						\
613   if (gfx.draw_busy_anim_function != NULL)	\
614     gfx.draw_busy_anim_function();		\
615 }
616 
617 
618 /* type definitions */
619 typedef int (*EventFilter)(const Event *);
620 
621 
622 /* structure definitions */
623 
624 struct ProgramInfo
625 {
626   char *command_basepath;	/* directory that contains the program */
627   char *command_basename;	/* base filename of the program binary */
628 
629   char *userdata_subdir;	/* personal user game data directory */
630   char *userdata_subdir_unix;	/* personal user game data directory (Unix) */
631   char *userdata_path;		/* resulting full path to game data directory */
632 
633   char *program_title;
634   char *window_title;
635   char *icon_title;
636 
637   char *x11_icon_filename;
638   char *x11_iconmask_filename;
639   char *sdl_icon_filename;
640   char *msdos_cursor_filename;
641 
642   char *cookie_prefix;
643   char *filename_prefix;	/* prefix to cut off from DOS filenames */
644 
645   char *error_filename;		/* filename where to write error messages to */
646   FILE *error_file;		/* (used instead of 'stderr' on some systems) */
647 
648   int version_major;
649   int version_minor;
650   int version_patch;
651 
652   void (*exit_function)(int);
653 };
654 
655 struct OptionInfo
656 {
657   char *display_name;
658   char *server_host;
659   int server_port;
660 
661   char *ro_base_directory;
662   char *rw_base_directory;
663   char *level_directory;
664   char *graphics_directory;
665   char *sounds_directory;
666   char *music_directory;
667   char *docs_directory;
668 
669   char *execute_command;
670 
671   char *special_flags;
672 
673   boolean serveronly;
674   boolean network;
675   boolean verbose;
676   boolean debug;
677   boolean debug_x11_sync;
678 };
679 
680 struct ScreenModeInfo
681 {
682   int width, height;
683 };
684 
685 struct VideoSystemInfo
686 {
687   int default_depth;
688   int width, height, depth;
689 
690   boolean fullscreen_available;
691   boolean fullscreen_enabled;
692   struct ScreenModeInfo *fullscreen_modes;
693   char *fullscreen_mode_current;
694 };
695 
696 struct AudioSystemInfo
697 {
698   boolean sound_available;
699   boolean loops_available;
700   boolean music_available;
701 
702   boolean sound_enabled;
703   boolean sound_deactivated;	/* for temporarily disabling sound */
704 
705   int mixer_pipe[2];
706   int mixer_pid;
707   char *device_name;
708   int device_fd;
709 
710   int num_channels;
711   int music_channel;
712   int first_sound_channel;
713 };
714 
715 struct FontBitmapInfo
716 {
717   Bitmap *bitmap;
718 
719   int src_x, src_y;		/* start position of animation frames */
720   int width, height;		/* width/height of each animation frame */
721 
722   int draw_xoffset;		/* offset for drawing font characters */
723   int draw_yoffset;		/* offset for drawing font characters */
724 
725   int num_chars;
726   int num_chars_per_line;
727 
728 #if defined(TARGET_X11_NATIVE_PERFORMANCE_WORKAROUND)
729   Pixmap *clip_mask;		/* single-char-only clip mask array for X11 */
730 #endif
731 };
732 
733 struct GfxInfo
734 {
735   int sx, sy;
736   int sxsize, sysize;
737   int real_sx, real_sy;
738   int full_sxsize, full_sysize;
739   int scrollbuffer_width, scrollbuffer_height;
740 
741   int dx, dy;
742   int dxsize, dysize;
743 
744   int vx, vy;
745   int vxsize, vysize;
746 
747   int win_xsize, win_ysize;
748 
749   int draw_deactivation_mask;
750   int draw_background_mask;
751 
752   Bitmap *field_save_buffer;
753 
754   Bitmap *background_bitmap;
755   int background_bitmap_mask;
756 
757   boolean clipping_enabled;
758   int clip_x, clip_y;
759   int clip_width, clip_height;
760 
761   boolean override_level_graphics;
762   boolean override_level_sounds;
763   boolean override_level_music;
764 
765   boolean draw_init_text;
766 
767   int num_fonts;
768   struct FontBitmapInfo *font_bitmap_info;
769   int (*select_font_function)(int);
770   int (*get_font_from_token_function)(char *);
771 
772   int anim_random_frame;
773 
774   void (*draw_busy_anim_function)(void);
775 };
776 
777 struct JoystickInfo
778 {
779   int status;
780   int fd[MAX_PLAYERS];		/* file descriptor of player's joystick */
781 };
782 
783 struct SetupJoystickInfo
784 {
785   char *device_name;		/* device name of player's joystick */
786 
787   int xleft, xmiddle, xright;
788   int yupper, ymiddle, ylower;
789   int snap, drop;
790 };
791 
792 struct SetupKeyboardInfo
793 {
794   Key left, right, up, down;
795   Key snap, drop;
796 };
797 
798 struct SetupInputInfo
799 {
800   boolean use_joystick;
801   struct SetupJoystickInfo joy;
802   struct SetupKeyboardInfo key;
803 };
804 
805 struct SetupEditorInfo
806 {
807   boolean el_boulderdash;
808   boolean el_emerald_mine;
809   boolean el_emerald_mine_club;
810   boolean el_more;
811   boolean el_sokoban;
812   boolean el_supaplex;
813   boolean el_diamond_caves;
814   boolean el_dx_boulderdash;
815   boolean el_chars;
816   boolean el_steel_chars;
817   boolean el_custom;
818   boolean el_user_defined;
819   boolean el_dynamic;
820 
821   boolean el_headlines;
822 
823   boolean el_by_game;
824   boolean el_by_type;
825 
826   boolean show_element_token;
827 };
828 
829 struct SetupEditorCascadeInfo
830 {
831   boolean el_bd;
832   boolean el_em;
833   boolean el_emc;
834   boolean el_rnd;
835   boolean el_sb;
836   boolean el_sp;
837   boolean el_dc;
838   boolean el_dx;
839   boolean el_chars;
840   boolean el_steel_chars;
841   boolean el_ce;
842   boolean el_ge;
843   boolean el_ref;
844   boolean el_user;
845   boolean el_dynamic;
846 };
847 
848 struct SetupShortcutInfo
849 {
850   Key save_game;
851   Key load_game;
852   Key toggle_pause;
853 
854   Key focus_player[MAX_PLAYERS];
855   Key focus_player_all;
856 
857   Key tape_eject;
858   Key tape_stop;
859   Key tape_pause;
860   Key tape_record;
861   Key tape_play;
862 
863   Key sound_simple;
864   Key sound_loops;
865   Key sound_music;
866 };
867 
868 struct SetupSystemInfo
869 {
870   char *sdl_videodriver;
871   char *sdl_audiodriver;
872   int audio_fragment_size;
873 };
874 
875 struct SetupInfo
876 {
877   char *player_name;
878 
879   boolean sound;
880   boolean sound_loops;
881   boolean sound_music;
882   boolean sound_simple;
883   boolean toons;
884   boolean scroll_delay;
885   boolean scroll_delay_value;
886   boolean soft_scrolling;
887   boolean fade_screens;
888   boolean autorecord;
889   boolean show_titlescreen;
890   boolean quick_doors;
891   boolean team_mode;
892   boolean handicap;
893   boolean skip_levels;
894   boolean time_limit;
895   boolean fullscreen;
896   char *fullscreen_mode;
897   boolean ask_on_escape;
898   boolean ask_on_escape_editor;
899   boolean quick_switch;
900   boolean input_on_focus;
901   boolean prefer_aga_graphics;
902   int game_frame_delay;
903   boolean sp_show_border_elements;
904 
905   char *graphics_set;
906   char *sounds_set;
907   char *music_set;
908   int override_level_graphics;		/* not boolean -- can also be "AUTO" */
909   int override_level_sounds;		/* not boolean -- can also be "AUTO" */
910   int override_level_music;		/* not boolean -- can also be "AUTO" */
911 
912   struct SetupEditorInfo editor;
913   struct SetupEditorCascadeInfo editor_cascade;
914   struct SetupShortcutInfo shortcut;
915   struct SetupInputInfo input[MAX_PLAYERS];
916   struct SetupSystemInfo system;
917   struct OptionInfo options;
918 };
919 
920 struct TreeInfo
921 {
922   struct TreeInfo **node_top;		/* topmost node in tree */
923   struct TreeInfo *node_parent;		/* parent level directory info */
924   struct TreeInfo *node_group;		/* level group sub-directory info */
925   struct TreeInfo *next;		/* next level series structure node */
926 
927   int cl_first;		/* internal control field for setup screen */
928   int cl_cursor;	/* internal control field for setup screen */
929 
930   int type;		/* type of tree content */
931 
932   /* fields for "type == TREE_TYPE_LEVEL_DIR" */
933 
934   char *subdir;		/* tree info sub-directory basename (may be ".") */
935   char *fullpath;	/* complete path relative to tree base directory */
936   char *basepath;	/* absolute base path of tree base directory */
937   char *identifier;	/* identifier string for configuration files */
938   char *name;		/* tree info name, as displayed in selection menues */
939   char *name_sorting;	/* optional sorting name for correct name sorting */
940   char *author;		/* level or artwork author name */
941   char *year;		/* optional year of creation for levels or artwork */
942   char *imported_from;	/* optional comment for imported levels or artwork */
943   char *imported_by;	/* optional comment for imported levels or artwork */
944   char *tested_by;	/* optional comment to name people who tested a set */
945 
946   char *graphics_set_ecs; /* special EMC custom graphics set (ECS graphics) */
947   char *graphics_set_aga; /* special EMC custom graphics set (AGA graphics) */
948   char *graphics_set;	/* optional custom graphics set (level tree only) */
949   char *sounds_set;	/* optional custom sounds set (level tree only) */
950   char *music_set;	/* optional custom music set (level tree only) */
951   char *graphics_path;	/* path to optional custom graphics set (level only) */
952   char *sounds_path;	/* path to optional custom sounds set (level only) */
953   char *music_path;	/* path to optional custom music set (level only) */
954 
955   char *level_filename;	/* filename of level file (for packed level file) */
956   char *level_filetype;	/* type of levels in level directory or level file */
957 
958   char *special_flags;	/* flags for special actions performed on level file */
959 
960   int levels;		/* number of levels in level series */
961   int first_level;	/* first level number (to allow start with 0 or 1) */
962   int last_level;	/* last level number (automatically calculated) */
963   int sort_priority;	/* sort levels by 'sort_priority' and then by name */
964 
965   boolean latest_engine;/* force level set to use the latest game engine */
966 
967   boolean level_group;	/* directory contains more level series directories */
968   boolean parent_link;	/* entry links back to parent directory */
969   boolean in_user_dir;	/* user defined levels are stored in home directory */
970   boolean user_defined;	/* levels in user directory and marked as "private" */
971   boolean readonly;	/* readonly levels can not be changed with editor */
972   boolean handicap;	/* level set has no handicap when set to "false" */
973   boolean skip_levels;	/* levels can be skipped when set to "true" */
974 
975   int color;		/* color to use on selection screen for this level */
976   char *class_desc;	/* description of level series class */
977   int handicap_level;	/* number of the lowest unsolved level */
978 
979   char *infotext;	/* optional text to describe the tree type (headline) */
980 };
981 
982 typedef struct TreeInfo TreeInfo;
983 typedef struct TreeInfo LevelDirTree;
984 typedef struct TreeInfo ArtworkDirTree;
985 typedef struct TreeInfo GraphicsDirTree;
986 typedef struct TreeInfo SoundsDirTree;
987 typedef struct TreeInfo MusicDirTree;
988 
989 struct ArtworkInfo
990 {
991   GraphicsDirTree *gfx_first;
992   GraphicsDirTree *gfx_current;
993   SoundsDirTree *snd_first;
994   SoundsDirTree *snd_current;
995   MusicDirTree *mus_first;
996   MusicDirTree *mus_current;
997 
998   char *gfx_current_identifier;
999   char *snd_current_identifier;
1000   char *mus_current_identifier;
1001 };
1002 
1003 struct ValueTextInfo
1004 {
1005   int value;
1006   char *text;
1007 };
1008 
1009 struct ConfigInfo
1010 {
1011   char *token;
1012   char *value;
1013 };
1014 
1015 struct ConfigTypeInfo
1016 {
1017   char *token;
1018   char *value;
1019   int type;
1020 };
1021 
1022 struct TokenIntPtrInfo
1023 {
1024   char *token;
1025   int *value;
1026 };
1027 
1028 struct FileInfo
1029 {
1030   char *token;
1031 
1032   char *default_filename;
1033   char *filename;
1034 
1035   char **default_parameter;			/* array of file parameters */
1036   char **parameter;				/* array of file parameters */
1037 
1038   boolean redefined;
1039   boolean fallback_to_default;
1040   boolean default_is_cloned;
1041 };
1042 
1043 struct SetupFileList
1044 {
1045   char *token;
1046   char *value;
1047 
1048   struct SetupFileList *next;
1049 };
1050 
1051 struct ListNodeInfo
1052 {
1053   char *source_filename;			/* primary key for node list */
1054   int num_references;
1055 };
1056 
1057 struct PropertyMapping
1058 {
1059   int base_index;
1060   int ext1_index;
1061   int ext2_index;
1062   int ext3_index;
1063 
1064   int artwork_index;
1065 };
1066 
1067 struct ArtworkListInfo
1068 {
1069   int type;					/* type of artwork */
1070 
1071   int num_file_list_entries;
1072   int num_dynamic_file_list_entries;
1073   struct FileInfo *file_list;			/* static artwork file array */
1074   struct FileInfo *dynamic_file_list;		/* dynamic artwrk file array */
1075 
1076   int num_suffix_list_entries;
1077   struct ConfigTypeInfo *suffix_list;		/* parameter suffixes array */
1078 
1079   int num_base_prefixes;
1080   int num_ext1_suffixes;
1081   int num_ext2_suffixes;
1082   int num_ext3_suffixes;
1083   char **base_prefixes;				/* base token prefixes array */
1084   char **ext1_suffixes;				/* property suffixes array 1 */
1085   char **ext2_suffixes;				/* property suffixes array 2 */
1086   char **ext3_suffixes;				/* property suffixes array 3 */
1087 
1088   int num_ignore_tokens;
1089   char **ignore_tokens;				/* file tokens to be ignored */
1090 
1091   int num_property_mapping_entries;
1092   struct PropertyMapping *property_mapping;	/* mapping token -> artwork */
1093 
1094   int sizeof_artwork_list_entry;
1095 
1096   struct ListNodeInfo **artwork_list;		/* static artwork node array */
1097   struct ListNodeInfo **dynamic_artwork_list;	/* dynamic artwrk node array */
1098   struct ListNode *content_list;		/* dynamic artwork node list */
1099 
1100   void *(*load_artwork)(char *);		/* constructor function */
1101   void (*free_artwork)(void *);			/* destructor function */
1102 };
1103 
1104 struct XY
1105 {
1106   int x, y;
1107 };
1108 
1109 struct Rect
1110 {
1111   int x, y;
1112   int width, height;
1113 };
1114 
1115 struct RectWithBorder
1116 {
1117   int x, y;
1118   int width, height;
1119   int border_size;
1120 };
1121 
1122 struct MenuPosInfo
1123 {
1124   int x, y;
1125   int width, height;
1126   int align, valign;
1127 };
1128 
1129 struct TextPosInfo
1130 {
1131   int x, y;
1132   int width, height;
1133   int align, valign;
1134   int size;
1135   int font, font_alt;
1136   boolean draw_masked;
1137   int sort_priority;
1138   int id;
1139 };
1140 
1141 
1142 /* ========================================================================= */
1143 /* exported variables                                                        */
1144 /* ========================================================================= */
1145 
1146 extern struct ProgramInfo	program;
1147 extern struct OptionInfo	options;
1148 extern struct VideoSystemInfo	video;
1149 extern struct AudioSystemInfo	audio;
1150 extern struct GfxInfo		gfx;
1151 extern struct AnimInfo		anim;
1152 extern struct ArtworkInfo	artwork;
1153 extern struct JoystickInfo	joystick;
1154 extern struct SetupInfo		setup;
1155 
1156 extern LevelDirTree	       *leveldir_first_all;
1157 extern LevelDirTree	       *leveldir_first;
1158 extern LevelDirTree	       *leveldir_current;
1159 extern int			level_nr;
1160 
1161 extern Display		       *display;
1162 extern Visual		       *visual;
1163 extern int			screen;
1164 extern Colormap			cmap;
1165 
1166 extern DrawWindow	       *window;
1167 extern DrawBuffer	       *backbuffer;
1168 extern DrawBuffer	       *drawto;
1169 
1170 extern int			button_status;
1171 extern boolean			motion_status;
1172 
1173 extern int			redraw_mask;
1174 extern int			redraw_tiles;
1175 
1176 extern int			FrameCounter;
1177 
1178 
1179 /* function definitions */
1180 
1181 void InitProgramInfo(char *, char *, char *, char *, char *, char *, char *,
1182 		     char *, char *, char *, char *, char *, int);
1183 
1184 void InitExitFunction(void (*exit_function)(int));
1185 void InitPlatformDependentStuff(void);
1186 void ClosePlatformDependentStuff(void);
1187 
1188 void InitGfxFieldInfo(int, int, int, int, int, int, int, int, Bitmap *);
1189 void InitGfxDoor1Info(int, int, int, int);
1190 void InitGfxDoor2Info(int, int, int, int);
1191 void InitGfxWindowInfo(int, int);
1192 void InitGfxScrollbufferInfo(int, int);
1193 void InitGfxClipRegion(boolean, int, int, int, int);
1194 void InitGfxDrawBusyAnimFunction(void (*draw_busy_anim_function)(void));
1195 void InitGfxCustomArtworkInfo();
1196 void SetDrawDeactivationMask(int);
1197 void SetDrawBackgroundMask(int);
1198 void SetWindowBackgroundBitmap(Bitmap *);
1199 void SetMainBackgroundBitmap(Bitmap *);
1200 void SetDoorBackgroundBitmap(Bitmap *);
1201 
1202 void InitVideoDisplay(void);
1203 void CloseVideoDisplay(void);
1204 void InitVideoBuffer(int, int, int, boolean);
1205 Bitmap *CreateBitmapStruct(void);
1206 Bitmap *CreateBitmap(int, int, int);
1207 void ReCreateBitmap(Bitmap **, int, int, int);
1208 void FreeBitmap(Bitmap *);
1209 void BlitBitmap(Bitmap *, Bitmap *, int, int, int, int, int, int);
1210 void FadeRectangle(Bitmap *bitmap, int, int, int, int, int, int, int,
1211 		   void (*draw_border_function)(void));
1212 void FillRectangle(Bitmap *, int, int, int, int, Pixel);
1213 void ClearRectangle(Bitmap *, int, int, int, int);
1214 void ClearRectangleOnBackground(Bitmap *, int, int, int, int);
1215 void SetClipMask(Bitmap *, GC, Pixmap);
1216 void SetClipOrigin(Bitmap *, GC, int, int);
1217 void BlitBitmapMasked(Bitmap *, Bitmap *, int, int, int, int, int, int);
1218 boolean DrawingOnBackground(int, int);
1219 void BlitBitmapOnBackground(Bitmap *, Bitmap *, int, int, int, int, int, int);
1220 void DrawSimpleBlackLine(Bitmap *, int, int, int, int);
1221 void DrawSimpleWhiteLine(Bitmap *, int, int, int, int);
1222 void DrawLines(Bitmap *, struct XY *, int, Pixel);
1223 Pixel GetPixel(Bitmap *, int, int);
1224 Pixel GetPixelFromRGB(Bitmap *, unsigned int,unsigned int,unsigned int);
1225 Pixel GetPixelFromRGBcompact(Bitmap *, unsigned int);
1226 
1227 void FlushDisplay(void);
1228 void SyncDisplay(void);
1229 void KeyboardAutoRepeatOn(void);
1230 void KeyboardAutoRepeatOff(void);
1231 boolean PointerInWindow(DrawWindow *);
1232 boolean SetVideoMode(boolean);
1233 boolean ChangeVideoModeIfNeeded(boolean);
1234 
1235 Bitmap *LoadImage(char *);
1236 Bitmap *LoadCustomImage(char *);
1237 void ReloadCustomImage(Bitmap *, char *);
1238 
1239 Bitmap *ZoomBitmap(Bitmap *, int, int);
1240 void CreateBitmapWithSmallBitmaps(Bitmap *, int);
1241 void ScaleBitmap(Bitmap *, int);
1242 
1243 void SetMouseCursor(int);
1244 
1245 void OpenAudio(void);
1246 void CloseAudio(void);
1247 void SetAudioMode(boolean);
1248 
1249 void InitEventFilter(EventFilter);
1250 boolean PendingEvent(void);
1251 void NextEvent(Event *event);
1252 void PeekEvent(Event *event);
1253 Key GetEventKey(KeyEvent *, boolean);
1254 KeyMod HandleKeyModState(Key, int);
1255 KeyMod GetKeyModState();
1256 KeyMod GetKeyModStateFromEvents();
1257 boolean CheckCloseWindowEvent(ClientMessageEvent *);
1258 
1259 void InitJoysticks();
1260 boolean ReadJoystick(int, int *, int *, boolean *, boolean *);
1261 
1262 #endif /* SYSTEM_H */
1263