added quickly toggling team mode by clicking on main menu "name/team" text
[rocksndiamonds.git] / src / screens.c
1 // ============================================================================
2 // Rocks'n'Diamonds - McDuffin Strikes Back!
3 // ----------------------------------------------------------------------------
4 // (c) 1995-2014 by Artsoft Entertainment
5 //                  Holger Schemel
6 //                  info@artsoft.org
7 //                  http://www.artsoft.org/
8 // ----------------------------------------------------------------------------
9 // screens.c
10 // ============================================================================
11
12 #include "libgame/libgame.h"
13
14 #include "screens.h"
15 #include "events.h"
16 #include "game.h"
17 #include "tools.h"
18 #include "editor.h"
19 #include "files.h"
20 #include "tape.h"
21 #include "anim.h"
22 #include "network.h"
23 #include "init.h"
24 #include "config.h"
25
26
27 #define DEBUG_JOYSTICKS         0
28
29
30 // screens on the info screen
31 #define INFO_MODE_MAIN                  0
32 #define INFO_MODE_TITLE                 1
33 #define INFO_MODE_ELEMENTS              2
34 #define INFO_MODE_MUSIC                 3
35 #define INFO_MODE_CREDITS               4
36 #define INFO_MODE_PROGRAM               5
37 #define INFO_MODE_VERSION               6
38 #define INFO_MODE_LEVELSET              7
39
40 #define MAX_INFO_MODES                  8
41
42 // screens on the setup screen
43 // (must match GFX_SPECIAL_ARG_SETUP_* values as defined in src/main.h)
44 // (should also match corresponding entries in src/conf_gfx.c)
45 #define SETUP_MODE_MAIN                 0
46 #define SETUP_MODE_GAME                 1
47 #define SETUP_MODE_EDITOR               2
48 #define SETUP_MODE_GRAPHICS             3
49 #define SETUP_MODE_SOUND                4
50 #define SETUP_MODE_ARTWORK              5
51 #define SETUP_MODE_INPUT                6
52 #define SETUP_MODE_TOUCH                7
53 #define SETUP_MODE_SHORTCUTS            8
54 #define SETUP_MODE_SHORTCUTS_1          9
55 #define SETUP_MODE_SHORTCUTS_2          10
56 #define SETUP_MODE_SHORTCUTS_3          11
57 #define SETUP_MODE_SHORTCUTS_4          12
58 #define SETUP_MODE_SHORTCUTS_5          13
59
60 // sub-screens on the setup screen (generic)
61 #define SETUP_MODE_CHOOSE_ARTWORK       14
62 #define SETUP_MODE_CHOOSE_OTHER         15
63
64 // sub-screens on the setup screen (specific)
65 #define SETUP_MODE_CHOOSE_GAME_SPEED    16
66 #define SETUP_MODE_CHOOSE_SCROLL_DELAY  17
67 #define SETUP_MODE_CHOOSE_SNAPSHOT_MODE 18
68 #define SETUP_MODE_CHOOSE_WINDOW_SIZE   19
69 #define SETUP_MODE_CHOOSE_SCALING_TYPE  20
70 #define SETUP_MODE_CHOOSE_RENDERING     21
71 #define SETUP_MODE_CHOOSE_VSYNC         22
72 #define SETUP_MODE_CHOOSE_GRAPHICS      23
73 #define SETUP_MODE_CHOOSE_SOUNDS        24
74 #define SETUP_MODE_CHOOSE_MUSIC         25
75 #define SETUP_MODE_CHOOSE_VOLUME_SIMPLE 26
76 #define SETUP_MODE_CHOOSE_VOLUME_LOOPS  27
77 #define SETUP_MODE_CHOOSE_VOLUME_MUSIC  28
78 #define SETUP_MODE_CHOOSE_TOUCH_CONTROL 29
79 #define SETUP_MODE_CHOOSE_MOVE_DISTANCE 30
80 #define SETUP_MODE_CHOOSE_DROP_DISTANCE 31
81 #define SETUP_MODE_CHOOSE_TRANSPARENCY  32
82 #define SETUP_MODE_CHOOSE_GRID_XSIZE_0  33
83 #define SETUP_MODE_CHOOSE_GRID_YSIZE_0  34
84 #define SETUP_MODE_CHOOSE_GRID_XSIZE_1  35
85 #define SETUP_MODE_CHOOSE_GRID_YSIZE_1  36
86 #define SETUP_MODE_CONFIG_VIRT_BUTTONS  37
87
88 #define MAX_SETUP_MODES                 38
89
90 #define MAX_MENU_MODES                  MAX(MAX_INFO_MODES, MAX_SETUP_MODES)
91
92 // setup screen titles
93 #define STR_SETUP_MAIN                  "Setup"
94 #define STR_SETUP_GAME                  "Game & Menu"
95 #define STR_SETUP_EDITOR                "Editor"
96 #define STR_SETUP_GRAPHICS              "Graphics"
97 #define STR_SETUP_SOUND                 "Sound & Music"
98 #define STR_SETUP_ARTWORK               "Custom Artwork"
99 #define STR_SETUP_INPUT                 "Input Devices"
100 #define STR_SETUP_TOUCH                 "Touch Controls"
101 #define STR_SETUP_SHORTCUTS             "Key Shortcuts"
102 #define STR_SETUP_EXIT                  "Exit"
103 #define STR_SETUP_SAVE_AND_EXIT         "Save and Exit"
104
105 #define STR_SETUP_CHOOSE_GAME_SPEED     "Game Speed"
106 #define STR_SETUP_CHOOSE_SCROLL_DELAY   "Scroll Delay"
107 #define STR_SETUP_CHOOSE_SNAPSHOT_MODE  "Snapshot Mode"
108 #define STR_SETUP_CHOOSE_WINDOW_SIZE    "Window Scaling"
109 #define STR_SETUP_CHOOSE_SCALING_TYPE   "Anti-Aliasing"
110 #define STR_SETUP_CHOOSE_RENDERING      "Rendering Mode"
111 #define STR_SETUP_CHOOSE_VSYNC          "VSync Mode"
112 #define STR_SETUP_CHOOSE_VOLUME_SIMPLE  "Sound Volume"
113 #define STR_SETUP_CHOOSE_VOLUME_LOOPS   "Loops Volume"
114 #define STR_SETUP_CHOOSE_VOLUME_MUSIC   "Music Volume"
115 #define STR_SETUP_CHOOSE_TOUCH_CONTROL  "Control Type"
116 #define STR_SETUP_CHOOSE_MOVE_DISTANCE  "Move Distance"
117 #define STR_SETUP_CHOOSE_DROP_DISTANCE  "Drop Distance"
118 #define STR_SETUP_CHOOSE_TRANSPARENCY   "Transparency"
119 #define STR_SETUP_CHOOSE_GRID_XSIZE_0   "Horiz. Buttons"
120 #define STR_SETUP_CHOOSE_GRID_YSIZE_0   "Vert. Buttons"
121 #define STR_SETUP_CHOOSE_GRID_XSIZE_1   "Horiz. Buttons"
122 #define STR_SETUP_CHOOSE_GRID_YSIZE_1   "Vert. Buttons"
123
124 // for input setup functions
125 #define SETUPINPUT_SCREEN_POS_START     0
126 #define SETUPINPUT_SCREEN_POS_EMPTY1    3
127 #define SETUPINPUT_SCREEN_POS_EMPTY2    12
128 #define SETUPINPUT_SCREEN_POS_END       13
129
130 #define MENU_SETUP_FONT_TITLE           FONT_TEXT_1
131 #define MENU_SETUP_FONT_TEXT            FONT_TITLE_2
132
133 #define MAX_SETUP_TEXT_INPUT_LEN        28
134
135 // for various menu stuff
136 #define MENU_SCREEN_START_XPOS          1
137 #define MENU_SCREEN_START_YPOS          2
138 #define MENU_SCREEN_VALUE_XPOS          (SCR_FIELDX - 3)
139 #define MENU_SCREEN_MAX_XPOS            (SCR_FIELDX - 1)
140 #define MENU_TITLE1_YPOS                8
141 #define MENU_TITLE2_YPOS                46
142 #define MENU_INFO_FONT_TITLE            FONT_TEXT_1
143 #define MENU_INFO_FONT_HEAD             FONT_TEXT_2
144 #define MENU_INFO_FONT_TEXT             FONT_TEXT_3
145 #define MENU_INFO_FONT_FOOT             FONT_TEXT_4
146 #define MENU_INFO_SPACE_HEAD            (menu.headline2_spacing_info[info_mode])
147 #define MENU_SCREEN_INFO_SPACE_LEFT     (menu.left_spacing_info[info_mode])
148 #define MENU_SCREEN_INFO_SPACE_RIGHT    (menu.right_spacing_info[info_mode])
149 #define MENU_SCREEN_INFO_SPACE_TOP      (menu.top_spacing_info[info_mode])
150 #define MENU_SCREEN_INFO_SPACE_BOTTOM   (menu.bottom_spacing_info[info_mode])
151 #define MENU_SCREEN_INFO_YSTART1        MENU_SCREEN_INFO_SPACE_TOP
152 #define MENU_SCREEN_INFO_YSTART2        (MENU_SCREEN_INFO_YSTART1 +            \
153                                          getMenuTextStep(MENU_INFO_SPACE_HEAD, \
154                                                          MENU_INFO_FONT_TITLE))
155 #define MENU_SCREEN_INFO_YSTEP          (TILEY + 4)
156 #define MENU_SCREEN_INFO_YBOTTOM        (SYSIZE - MENU_SCREEN_INFO_SPACE_BOTTOM)
157 #define MENU_SCREEN_INFO_YSIZE          (MENU_SCREEN_INFO_YBOTTOM -     \
158                                          MENU_SCREEN_INFO_YSTART2 -     \
159                                          TILEY / 2)
160 #define MAX_INFO_ELEMENTS_ON_SCREEN     128
161 #define STD_INFO_ELEMENTS_ON_SCREEN     (MENU_SCREEN_INFO_YSIZE /       \
162                                          MENU_SCREEN_INFO_YSTEP)
163 #define NUM_INFO_ELEMENTS_FROM_CONF     \
164   (menu.list_size_info[GFX_SPECIAL_ARG_INFO_ELEMENTS] > 0 ?             \
165    menu.list_size_info[GFX_SPECIAL_ARG_INFO_ELEMENTS] :                 \
166    MAX_MENU_ENTRIES_ON_SCREEN)
167 #define NUM_INFO_ELEMENTS_ON_SCREEN     MIN(MIN(STD_INFO_ELEMENTS_ON_SCREEN, \
168                                                 MAX_INFO_ELEMENTS_ON_SCREEN), \
169                                             NUM_INFO_ELEMENTS_FROM_CONF)
170 #define MAX_MENU_ENTRIES_ON_SCREEN      (SCR_FIELDY - MENU_SCREEN_START_YPOS)
171 #define MAX_MENU_TEXT_LENGTH_BIG        13
172 #define MAX_MENU_TEXT_LENGTH_MEDIUM     (MAX_MENU_TEXT_LENGTH_BIG * 2)
173
174 // screen gadget identifiers
175 #define SCREEN_CTRL_ID_PREV_LEVEL       0
176 #define SCREEN_CTRL_ID_NEXT_LEVEL       1
177 #define SCREEN_CTRL_ID_FIRST_LEVEL      2
178 #define SCREEN_CTRL_ID_LAST_LEVEL       3
179 #define SCREEN_CTRL_ID_LEVEL_NUMBER     4
180 #define SCREEN_CTRL_ID_PREV_PLAYER      5
181 #define SCREEN_CTRL_ID_NEXT_PLAYER      6
182 #define SCREEN_CTRL_ID_INSERT_SOLUTION  7
183 #define SCREEN_CTRL_ID_PLAY_SOLUTION    8
184 #define SCREEN_CTRL_ID_SCROLL_UP        9
185 #define SCREEN_CTRL_ID_SCROLL_DOWN      10
186 #define SCREEN_CTRL_ID_SCROLL_VERTICAL  11
187 #define SCREEN_CTRL_ID_NETWORK_SERVER   12
188
189 #define NUM_SCREEN_GADGETS              13
190
191 #define NUM_SCREEN_MENUBUTTONS          9
192 #define NUM_SCREEN_SCROLLBUTTONS        2
193 #define NUM_SCREEN_SCROLLBARS           1
194 #define NUM_SCREEN_TEXTINPUT            1
195
196 #define SCREEN_MASK_MAIN                (1 << 0)
197 #define SCREEN_MASK_MAIN_HAS_SOLUTION   (1 << 1)
198 #define SCREEN_MASK_INPUT               (1 << 2)
199
200 // graphic position and size values for buttons and scrollbars
201 #define SC_MENUBUTTON_XSIZE             TILEX
202 #define SC_MENUBUTTON_YSIZE             TILEY
203
204 #define SC_SCROLLBUTTON_XSIZE           TILEX
205 #define SC_SCROLLBUTTON_YSIZE           TILEY
206
207 #define SC_SCROLLBAR_XPOS               (SXSIZE - SC_SCROLLBUTTON_XSIZE)
208
209 #define SC_SCROLL_VERTICAL_XSIZE        SC_SCROLLBUTTON_XSIZE
210 #define SC_SCROLL_VERTICAL_YSIZE        ((MAX_MENU_ENTRIES_ON_SCREEN - 2) * \
211                                          SC_SCROLLBUTTON_YSIZE)
212
213 #define SC_SCROLL_UP_XPOS               SC_SCROLLBAR_XPOS
214 #define SC_SCROLL_UP_YPOS               (2 * SC_SCROLLBUTTON_YSIZE)
215
216 #define SC_SCROLL_VERTICAL_XPOS         SC_SCROLLBAR_XPOS
217 #define SC_SCROLL_VERTICAL_YPOS         (SC_SCROLL_UP_YPOS + \
218                                          SC_SCROLLBUTTON_YSIZE)
219
220 #define SC_SCROLL_DOWN_XPOS             SC_SCROLLBAR_XPOS
221 #define SC_SCROLL_DOWN_YPOS             (SC_SCROLL_VERTICAL_YPOS + \
222                                          SC_SCROLL_VERTICAL_YSIZE)
223
224 #define SC_BORDER_SIZE                  14
225
226
227 // forward declarations of internal functions
228 static void HandleScreenGadgets(struct GadgetInfo *);
229 static void HandleSetupScreen_Generic(int, int, int, int, int);
230 static void HandleSetupScreen_Input(int, int, int, int, int);
231 static void CustomizeKeyboard(int);
232 static void ConfigureJoystick(int);
233 static void ConfigureVirtualButtons(void);
234 static void execSetupGame(void);
235 static void execSetupGraphics(void);
236 static void execSetupSound(void);
237 static void execSetupTouch(void);
238 static void execSetupArtwork(void);
239 static void HandleChooseTree(int, int, int, int, int, TreeInfo **);
240
241 static void DrawChooseLevelSet(void);
242 static void DrawChooseLevelNr(void);
243 static void DrawInfoScreen(void);
244 static void DrawSetupScreen(void);
245
246 static void DrawInfoScreen_NotAvailable(char *, char *);
247 static void DrawInfoScreen_HelpAnim(int, int, boolean);
248 static void DrawInfoScreen_HelpText(int, int, int, int);
249 static void HandleInfoScreen_Main(int, int, int, int, int);
250 static void HandleInfoScreen_TitleScreen(int);
251 static void HandleInfoScreen_Elements(int);
252 static void HandleInfoScreen_Music(int);
253 static void HandleInfoScreen_Credits(int);
254 static void HandleInfoScreen_Program(int);
255 static void HandleInfoScreen_Version(int);
256
257 static void ModifyGameSpeedIfNeeded(void);
258 static void DisableVsyncIfNeeded(void);
259
260 static void MapScreenMenuGadgets(int);
261 static void MapScreenGadgets(int);
262 static void MapScreenTreeGadgets(TreeInfo *);
263
264 static void UpdateScreenMenuGadgets(int, boolean);
265
266 static struct GadgetInfo *screen_gadget[NUM_SCREEN_GADGETS];
267
268 static int info_mode = INFO_MODE_MAIN;
269 static int setup_mode = SETUP_MODE_MAIN;
270
271 static TreeInfo *window_sizes = NULL;
272 static TreeInfo *window_size_current = NULL;
273
274 static TreeInfo *scaling_types = NULL;
275 static TreeInfo *scaling_type_current = NULL;
276
277 static TreeInfo *rendering_modes = NULL;
278 static TreeInfo *rendering_mode_current = NULL;
279
280 static TreeInfo *vsync_modes = NULL;
281 static TreeInfo *vsync_mode_current = NULL;
282
283 static TreeInfo *scroll_delays = NULL;
284 static TreeInfo *scroll_delay_current = NULL;
285
286 static TreeInfo *snapshot_modes = NULL;
287 static TreeInfo *snapshot_mode_current = NULL;
288
289 static TreeInfo *game_speeds_normal = NULL;
290 static TreeInfo *game_speeds_extended = NULL;
291 static TreeInfo *game_speeds = NULL;
292 static TreeInfo *game_speed_current = NULL;
293
294 static TreeInfo *volumes_simple = NULL;
295 static TreeInfo *volume_simple_current = NULL;
296
297 static TreeInfo *volumes_loops = NULL;
298 static TreeInfo *volume_loops_current = NULL;
299
300 static TreeInfo *volumes_music = NULL;
301 static TreeInfo *volume_music_current = NULL;
302
303 static TreeInfo *touch_controls = NULL;
304 static TreeInfo *touch_control_current = NULL;
305
306 static TreeInfo *move_distances = NULL;
307 static TreeInfo *move_distance_current = NULL;
308
309 static TreeInfo *drop_distances = NULL;
310 static TreeInfo *drop_distance_current = NULL;
311
312 static TreeInfo *transparencies = NULL;
313 static TreeInfo *transparency_current = NULL;
314
315 static TreeInfo *grid_sizes[2][2] = { { NULL, NULL }, { NULL, NULL } };
316 static TreeInfo *grid_size_current[2][2] = { { NULL, NULL }, { NULL, NULL } };
317
318 static TreeInfo *level_number = NULL;
319 static TreeInfo *level_number_current = NULL;
320
321 static struct ValueTextInfo window_sizes_list[] =
322 {
323   {     50,     "50 %"                          },
324   {     80,     "80 %"                          },
325   {     90,     "90 %"                          },
326   {     100,    "100 % (Default)"               },
327   {     110,    "110 %"                         },
328   {     120,    "120 %"                         },
329   {     130,    "130 %"                         },
330   {     140,    "140 %"                         },
331   {     150,    "150 %"                         },
332   {     200,    "200 %"                         },
333   {     250,    "250 %"                         },
334   {     300,    "300 %"                         },
335
336   {     -1,     NULL                            },
337 };
338
339 static struct StringValueTextInfo scaling_types_list[] =
340 {
341   {     SCALING_QUALITY_NEAREST, "Off"          },
342   {     SCALING_QUALITY_LINEAR,  "Linear"       },
343   {     SCALING_QUALITY_BEST,    "Anisotropic"  },
344
345   {     NULL,                    NULL           },
346 };
347
348 static struct StringValueTextInfo rendering_modes_list[] =
349 {
350   {     STR_SPECIAL_RENDERING_OFF,      "Off (May show artifacts, fast)" },
351   {     STR_SPECIAL_RENDERING_BITMAP,   "Bitmap/Texture mode (slower)"   },
352 #if DEBUG
353   // this mode may work under certain conditions, but does not work on Windows
354   {     STR_SPECIAL_RENDERING_TARGET,   "Target Texture mode (slower)"   },
355 #endif
356   {     STR_SPECIAL_RENDERING_DOUBLE,   "Double Texture mode (slower)"   },
357
358   {     NULL,                            NULL                            },
359 };
360
361 static struct StringValueTextInfo vsync_modes_list[] =
362 {
363   {     STR_VSYNC_MODE_OFF,             "Off"           },
364   {     STR_VSYNC_MODE_NORMAL,          "Normal"        },
365   {     STR_VSYNC_MODE_ADAPTIVE,        "Adaptive"      },
366
367   {     NULL,                            NULL           },
368 };
369
370 static struct ValueTextInfo game_speeds_list_normal[] =
371 {
372   {     30,     "Very Slow"                     },
373   {     25,     "Slow"                          },
374   {     20,     "Normal"                        },
375   {     15,     "Fast"                          },
376   {     10,     "Very Fast"                     },
377
378   {     -1,     NULL                            },
379 };
380
381 static struct ValueTextInfo game_speeds_list_extended[] =
382 {
383   {     1000,   "1 fps (Extremely Slow)"        },
384   {     500,    "2 fps"                         },
385   {     200,    "5 fps"                         },
386   {     100,    "10 fps"                        },
387   {     50,     "20 fps"                        },
388   {     29,     "35 fps (Original Supaplex)"    },
389   {     25,     "40 fps"                        },
390   {     20,     "50 fps (=== Normal Speed ===)" },
391   {     16,     "60 fps (60 Hz VSync Speed)"    },
392   {     14,     "70 fps (Maximum Supaplex)"     },
393   {     10,     "100 fps"                       },
394   {     5,      "200 fps"                       },
395   {     2,      "500 fps"                       },
396   {     1,      "1000 fps (Extremely Fast)"     },
397
398   {     -1,     NULL                            },
399 };
400
401 static struct ValueTextInfo *game_speeds_list;
402
403 static struct ValueTextInfo scroll_delays_list[] =
404 {
405   {     0,      "0 Tiles (No Scroll Delay)"     },
406   {     1,      "1 Tile"                        },
407   {     2,      "2 Tiles"                       },
408   {     3,      "3 Tiles (Default)"             },
409   {     4,      "4 Tiles"                       },
410   {     5,      "5 Tiles"                       },
411   {     6,      "6 Tiles"                       },
412   {     7,      "7 Tiles"                       },
413   {     8,      "8 Tiles (Maximum Scroll Delay)"},
414
415   {     -1,     NULL                            },
416 };
417
418 static struct StringValueTextInfo snapshot_modes_list[] =
419 {
420   {     STR_SNAPSHOT_MODE_OFF,                  "Off"           },
421   {     STR_SNAPSHOT_MODE_EVERY_STEP,           "Every Step"    },
422   {     STR_SNAPSHOT_MODE_EVERY_MOVE,           "Every Move"    },
423   {     STR_SNAPSHOT_MODE_EVERY_COLLECT,        "Every Collect" },
424
425   {     NULL,                                   NULL            },
426 };
427
428 static struct ValueTextInfo volumes_list[] =
429 {
430   {     0,      "0 %"                           },
431   {     1,      "1 %"                           },
432   {     2,      "2 %"                           },
433   {     5,      "5 %"                           },
434   {     10,     "10 %"                          },
435   {     20,     "20 %"                          },
436   {     30,     "30 %"                          },
437   {     40,     "40 %"                          },
438   {     50,     "50 %"                          },
439   {     60,     "60 %"                          },
440   {     70,     "70 %"                          },
441   {     80,     "80 %"                          },
442   {     90,     "90 %"                          },
443   {     100,    "100 %"                         },
444
445   {     -1,     NULL                            },
446 };
447
448 static struct StringValueTextInfo touch_controls_list[] =
449 {
450   {     TOUCH_CONTROL_OFF,              "Off"                   },
451   {     TOUCH_CONTROL_VIRTUAL_BUTTONS,  "Virtual Buttons"       },
452   {     TOUCH_CONTROL_WIPE_GESTURES,    "Wipe Gestures"         },
453   {     TOUCH_CONTROL_FOLLOW_FINGER,    "Follow Finger"         },
454
455   {     NULL,                           NULL                    },
456 };
457
458 static struct ValueTextInfo distances_list[] =
459 {
460   {     1,      "1 %"                           },
461   {     2,      "2 %"                           },
462   {     3,      "3 %"                           },
463   {     4,      "4 %"                           },
464   {     5,      "5 %"                           },
465   {     10,     "10 %"                          },
466   {     15,     "15 %"                          },
467   {     20,     "20 %"                          },
468   {     25,     "25 %"                          },
469
470   {     -1,     NULL                            },
471 };
472
473 static struct ValueTextInfo transparencies_list[] =
474 {
475   {     0,      "0 % (Opaque)"                  },
476   {     10,     "10 %"                          },
477   {     20,     "20 %"                          },
478   {     30,     "30 %"                          },
479   {     40,     "40 %"                          },
480   {     50,     "50 %"                          },
481   {     60,     "60 %"                          },
482   {     70,     "70 %"                          },
483   {     80,     "80 %"                          },
484   {     90,     "90 %"                          },
485   {     100,    "100 % (Invisible)"             },
486
487   {     -1,     NULL                            },
488 };
489
490 static struct ValueTextInfo grid_sizes_list[] =
491 {
492   {     3,      "3"                             },
493   {     4,      "4"                             },
494   {     5,      "5"                             },
495   {     6,      "6"                             },
496   {     7,      "7"                             },
497   {     8,      "8"                             },
498   {     9,      "9"                             },
499   {     10,     "10"                            },
500   {     11,     "11"                            },
501   {     12,     "12"                            },
502   {     13,     "13"                            },
503   {     14,     "14"                            },
504   {     15,     "15"                            },
505   {     16,     "16"                            },
506   {     17,     "17"                            },
507   {     18,     "18"                            },
508   {     19,     "19"                            },
509   {     20,     "20"                            },
510   {     21,     "21"                            },
511   {     22,     "22"                            },
512   {     23,     "23"                            },
513   {     24,     "24"                            },
514   {     25,     "25"                            },
515   {     26,     "26"                            },
516   {     27,     "27"                            },
517   {     28,     "28"                            },
518   {     29,     "29"                            },
519   {     30,     "30"                            },
520   {     31,     "31"                            },
521   {     32,     "32"                            },
522
523   {     -1,     NULL                            },
524 };
525
526 #define DRAW_MODE(s)            ((s) >= GAME_MODE_MAIN &&               \
527                                  (s) <= GAME_MODE_SETUP ? (s) :         \
528                                  (s) == GAME_MODE_PSEUDO_TYPENAME ?     \
529                                  GAME_MODE_MAIN : GAME_MODE_DEFAULT)
530
531 // (there are no draw offset definitions needed for INFO_MODE_TITLE)
532 #define DRAW_MODE_INFO(i)       ((i) >= INFO_MODE_TITLE &&              \
533                                  (i) <= INFO_MODE_LEVELSET ? (i) :      \
534                                  INFO_MODE_MAIN)
535
536 #define DRAW_MODE_SETUP(i)      ((i) >= SETUP_MODE_MAIN &&              \
537                                  (i) <= SETUP_MODE_SHORTCUTS_5 ? (i) :  \
538                                  (i) >= SETUP_MODE_CHOOSE_GRAPHICS &&   \
539                                  (i) <= SETUP_MODE_CHOOSE_MUSIC ?       \
540                                  SETUP_MODE_CHOOSE_ARTWORK :            \
541                                  SETUP_MODE_CHOOSE_OTHER)
542
543 #define DRAW_XOFFSET_INFO(i)    (DRAW_MODE_INFO(i) == INFO_MODE_MAIN ?  \
544                                  menu.draw_xoffset[GAME_MODE_INFO] :    \
545                                  menu.draw_xoffset_info[DRAW_MODE_INFO(i)])
546 #define DRAW_YOFFSET_INFO(i)    (DRAW_MODE_INFO(i) == INFO_MODE_MAIN ?  \
547                                  menu.draw_yoffset[GAME_MODE_INFO] :    \
548                                  menu.draw_yoffset_info[DRAW_MODE_INFO(i)])
549 #define EXTRA_SPACING_INFO(i)   (DRAW_MODE_INFO(i) == INFO_MODE_MAIN ? \
550                                  menu.extra_spacing[GAME_MODE_INFO] :   \
551                                  menu.extra_spacing_info[DRAW_MODE_INFO(i)])
552
553 #define DRAW_XOFFSET_SETUP(i)   (DRAW_MODE_SETUP(i) == SETUP_MODE_MAIN ? \
554                                  menu.draw_xoffset[GAME_MODE_SETUP] :   \
555                                  menu.draw_xoffset_setup[DRAW_MODE_SETUP(i)])
556 #define DRAW_YOFFSET_SETUP(i)   (DRAW_MODE_SETUP(i) == SETUP_MODE_MAIN ? \
557                                  menu.draw_yoffset[GAME_MODE_SETUP] :   \
558                                  menu.draw_yoffset_setup[DRAW_MODE_SETUP(i)])
559 #define EXTRA_SPACING_SETUP(i)  (DRAW_MODE_SETUP(i) == SETUP_MODE_MAIN ? \
560                                  menu.extra_spacing[GAME_MODE_SETUP] :  \
561                                  menu.extra_spacing_setup[DRAW_MODE_SETUP(i)])
562
563 #define DRAW_XOFFSET(s)         ((s) == GAME_MODE_INFO ?                \
564                                  DRAW_XOFFSET_INFO(info_mode) :         \
565                                  (s) == GAME_MODE_SETUP ?               \
566                                  DRAW_XOFFSET_SETUP(setup_mode) :       \
567                                  menu.draw_xoffset[DRAW_MODE(s)])
568 #define DRAW_YOFFSET(s)         ((s) == GAME_MODE_INFO ?                \
569                                  DRAW_YOFFSET_INFO(info_mode) :         \
570                                  (s) == GAME_MODE_SETUP ?               \
571                                  DRAW_YOFFSET_SETUP(setup_mode) :       \
572                                  menu.draw_yoffset[DRAW_MODE(s)])
573 #define EXTRA_SPACING(s)        ((s) == GAME_MODE_INFO ?                \
574                                  EXTRA_SPACING_INFO(info_mode) :        \
575                                  (s) == GAME_MODE_SETUP ?               \
576                                  EXTRA_SPACING_SETUP(setup_mode) :      \
577                                  menu.extra_spacing[DRAW_MODE(s)])
578
579 #define mSX                     (SX + DRAW_XOFFSET(game_status))
580 #define mSY                     (SY + DRAW_YOFFSET(game_status))
581
582 #define NUM_MENU_ENTRIES_ON_SCREEN (menu.list_size[game_status] > 2 ?   \
583                                     menu.list_size[game_status] :       \
584                                     MAX_MENU_ENTRIES_ON_SCREEN)
585
586 #define IN_VIS_MENU(x, y)       IN_FIELD(x, y, SCR_FIELDX,              \
587                                          NUM_MENU_ENTRIES_ON_SCREEN)
588
589
590 // title display and control definitions
591
592 #define MAX_NUM_TITLE_SCREENS   (2 * MAX_NUM_TITLE_IMAGES +             \
593                                  2 * MAX_NUM_TITLE_MESSAGES)
594
595 #define NO_DIRECT_LEVEL_SELECT  (-1)
596
597
598 static int num_title_screens = 0;
599
600 struct TitleControlInfo
601 {
602   boolean is_image;
603   boolean initial;
604   boolean first;
605   int local_nr;
606   int sort_priority;
607 };
608
609 struct TitleControlInfo title_controls[MAX_NUM_TITLE_SCREENS];
610
611 // main menu display and control definitions
612
613 #define MAIN_CONTROL_NAME                       0
614 #define MAIN_CONTROL_LEVELS                     1
615 #define MAIN_CONTROL_SCORES                     2
616 #define MAIN_CONTROL_EDITOR                     3
617 #define MAIN_CONTROL_INFO                       4
618 #define MAIN_CONTROL_GAME                       5
619 #define MAIN_CONTROL_SETUP                      6
620 #define MAIN_CONTROL_QUIT                       7
621 #define MAIN_CONTROL_PREV_LEVEL                 8
622 #define MAIN_CONTROL_NEXT_LEVEL                 9
623 #define MAIN_CONTROL_FIRST_LEVEL                10
624 #define MAIN_CONTROL_LAST_LEVEL                 11
625 #define MAIN_CONTROL_LEVEL_NUMBER               12
626 #define MAIN_CONTROL_LEVEL_INFO_1               13
627 #define MAIN_CONTROL_LEVEL_INFO_2               14
628 #define MAIN_CONTROL_LEVEL_NAME                 15
629 #define MAIN_CONTROL_LEVEL_AUTHOR               16
630 #define MAIN_CONTROL_LEVEL_YEAR                 17
631 #define MAIN_CONTROL_LEVEL_IMPORTED_FROM        18
632 #define MAIN_CONTROL_LEVEL_IMPORTED_BY          19
633 #define MAIN_CONTROL_LEVEL_TESTED_BY            20
634 #define MAIN_CONTROL_TITLE_1                    21
635 #define MAIN_CONTROL_TITLE_2                    22
636 #define MAIN_CONTROL_TITLE_3                    23
637
638 static char str_main_text_name[10];
639 static char str_main_text_first_level[10];
640 static char str_main_text_last_level[10];
641 static char str_main_text_level_number[10];
642
643 static char network_server_hostname[MAX_SETUP_TEXT_INPUT_LEN + 1];
644
645 static char *main_text_name                     = str_main_text_name;
646 static char *main_text_first_level              = str_main_text_first_level;
647 static char *main_text_last_level               = str_main_text_last_level;
648 static char *main_text_level_number             = str_main_text_level_number;
649 static char *main_text_levels                   = "Levelset";
650 static char *main_text_scores                   = "Hall Of Fame";
651 static char *main_text_editor                   = "Level Creator";
652 static char *main_text_info                     = "Info Screen";
653 static char *main_text_game                     = "Start Game";
654 static char *main_text_setup                    = "Setup";
655 static char *main_text_quit                     = "Quit";
656 static char *main_text_level_name               = level.name;
657 static char *main_text_level_author             = level.author;
658 static char *main_text_level_year               = NULL;
659 static char *main_text_level_imported_from      = NULL;
660 static char *main_text_level_imported_by        = NULL;
661 static char *main_text_level_tested_by          = NULL;
662 static char *main_text_title_1                  = NULL;
663 static char *main_text_title_2                  = NULL;
664 static char *main_text_title_3                  = NULL;
665
666 struct MainControlInfo
667 {
668   int nr;
669
670   struct MenuPosInfo *pos_button;
671   int button_graphic;
672
673   struct TextPosInfo *pos_text;
674   char **text;
675
676   struct TextPosInfo *pos_input;
677   char **input;
678 };
679
680 static struct MainControlInfo main_controls[] =
681 {
682   {
683     MAIN_CONTROL_NAME,
684     &menu.main.button.name,             IMG_MENU_BUTTON_NAME,
685     &menu.main.text.name,               &main_text_name,
686     &menu.main.input.name,              &setup.player_name,
687   },
688   {
689     MAIN_CONTROL_LEVELS,
690     &menu.main.button.levels,           IMG_MENU_BUTTON_LEVELS,
691     &menu.main.text.levels,             &main_text_levels,
692     NULL,                               NULL,
693   },
694   {
695     MAIN_CONTROL_SCORES,
696     &menu.main.button.scores,           IMG_MENU_BUTTON_SCORES,
697     &menu.main.text.scores,             &main_text_scores,
698     NULL,                               NULL,
699   },
700   {
701     MAIN_CONTROL_EDITOR,
702     &menu.main.button.editor,           IMG_MENU_BUTTON_EDITOR,
703     &menu.main.text.editor,             &main_text_editor,
704     NULL,                               NULL,
705   },
706   {
707     MAIN_CONTROL_INFO,
708     &menu.main.button.info,             IMG_MENU_BUTTON_INFO,
709     &menu.main.text.info,               &main_text_info,
710     NULL,                               NULL,
711   },
712   {
713     MAIN_CONTROL_GAME,
714     &menu.main.button.game,             IMG_MENU_BUTTON_GAME,
715     &menu.main.text.game,               &main_text_game,
716     NULL,                               NULL,
717   },
718   {
719     MAIN_CONTROL_SETUP,
720     &menu.main.button.setup,            IMG_MENU_BUTTON_SETUP,
721     &menu.main.text.setup,              &main_text_setup,
722     NULL,                               NULL,
723   },
724   {
725     MAIN_CONTROL_QUIT,
726     &menu.main.button.quit,             IMG_MENU_BUTTON_QUIT,
727     &menu.main.text.quit,               &main_text_quit,
728     NULL,                               NULL,
729   },
730   {
731     MAIN_CONTROL_PREV_LEVEL,
732     NULL,                               -1,
733     NULL,                               NULL,
734     NULL,                               NULL,
735   },
736   {
737     MAIN_CONTROL_NEXT_LEVEL,
738     NULL,                               -1,
739     NULL,                               NULL,
740     NULL,                               NULL,
741   },
742   {
743     MAIN_CONTROL_FIRST_LEVEL,
744     NULL,                               -1,
745     &menu.main.text.first_level,        &main_text_first_level,
746     NULL,                               NULL,
747   },
748   {
749     MAIN_CONTROL_LAST_LEVEL,
750     NULL,                               -1,
751     &menu.main.text.last_level,         &main_text_last_level,
752     NULL,                               NULL,
753   },
754   {
755     MAIN_CONTROL_LEVEL_NUMBER,
756     NULL,                               -1,
757     &menu.main.text.level_number,       &main_text_level_number,
758     NULL,                               NULL,
759   },
760   {
761     MAIN_CONTROL_LEVEL_INFO_1,
762     NULL,                               -1,
763     &menu.main.text.level_info_1,       NULL,
764     NULL,                               NULL,
765   },
766   {
767     MAIN_CONTROL_LEVEL_INFO_2,
768     NULL,                               -1,
769     &menu.main.text.level_info_2,       NULL,
770     NULL,                               NULL,
771   },
772   {
773     MAIN_CONTROL_LEVEL_NAME,
774     NULL,                               -1,
775     &menu.main.text.level_name,         &main_text_level_name,
776     NULL,                               NULL,
777   },
778   {
779     MAIN_CONTROL_LEVEL_AUTHOR,
780     NULL,                               -1,
781     &menu.main.text.level_author,       &main_text_level_author,
782     NULL,                               NULL,
783   },
784   {
785     MAIN_CONTROL_LEVEL_YEAR,
786     NULL,                               -1,
787     &menu.main.text.level_year,         &main_text_level_year,
788     NULL,                               NULL,
789   },
790   {
791     MAIN_CONTROL_LEVEL_IMPORTED_FROM,
792     NULL,                               -1,
793     &menu.main.text.level_imported_from, &main_text_level_imported_from,
794     NULL,                               NULL,
795   },
796   {
797     MAIN_CONTROL_LEVEL_IMPORTED_BY,
798     NULL,                               -1,
799     &menu.main.text.level_imported_by,  &main_text_level_imported_by,
800     NULL,                               NULL,
801   },
802   {
803     MAIN_CONTROL_LEVEL_TESTED_BY,
804     NULL,                               -1,
805     &menu.main.text.level_tested_by,    &main_text_level_tested_by,
806     NULL,                               NULL,
807   },
808   {
809     MAIN_CONTROL_TITLE_1,
810     NULL,                               -1,
811     &menu.main.text.title_1,            &main_text_title_1,
812     NULL,                               NULL,
813   },
814   {
815     MAIN_CONTROL_TITLE_2,
816     NULL,                               -1,
817     &menu.main.text.title_2,            &main_text_title_2,
818     NULL,                               NULL,
819   },
820   {
821     MAIN_CONTROL_TITLE_3,
822     NULL,                               -1,
823     &menu.main.text.title_3,            &main_text_title_3,
824     NULL,                               NULL,
825   },
826
827   {
828     -1,
829     NULL,                               -1,
830     NULL,                               NULL,
831     NULL,                               NULL,
832   }
833 };
834
835
836 static int getTitleScreenGraphic(int nr, boolean initial)
837 {
838   return (initial ? IMG_TITLESCREEN_INITIAL_1 : IMG_TITLESCREEN_1) + nr;
839 }
840
841 static struct TitleMessageInfo *getTitleMessageInfo(int nr, boolean initial)
842 {
843   return (initial ? &titlemessage_initial[nr] : &titlemessage[nr]);
844 }
845
846 #if 0
847 static int getTitleScreenGameMode(boolean initial)
848 {
849   return (initial ? GAME_MODE_TITLE_INITIAL : GAME_MODE_TITLE);
850 }
851 #endif
852
853 static int getTitleMessageGameMode(boolean initial)
854 {
855   return (initial ? GAME_MODE_TITLE_INITIAL : GAME_MODE_TITLE);
856 }
857
858 static int getTitleAnimMode(struct TitleControlInfo *tci)
859 {
860   int base = (tci->initial ? GAME_MODE_TITLE_INITIAL_1 : GAME_MODE_TITLE_1);
861
862   return base + tci->local_nr;
863 }
864
865 #if 0
866 static int getTitleScreenBackground(boolean initial)
867 {
868   return (initial ? IMG_BACKGROUND_TITLE_INITIAL : IMG_BACKGROUND_TITLE);
869 }
870 #endif
871
872 #if 0
873 static int getTitleMessageBackground(int nr, boolean initial)
874 {
875   return (initial ? IMG_BACKGROUND_TITLE_INITIAL : IMG_BACKGROUND_TITLE);
876 }
877 #endif
878
879 static int getTitleBackground(int nr, boolean initial, boolean is_image)
880 {
881   int base = (is_image ?
882               (initial ? IMG_BACKGROUND_TITLESCREEN_INITIAL_1 :
883                          IMG_BACKGROUND_TITLESCREEN_1) :
884               (initial ? IMG_BACKGROUND_TITLEMESSAGE_INITIAL_1 :
885                          IMG_BACKGROUND_TITLEMESSAGE_1));
886   int graphic_global = (initial ? IMG_BACKGROUND_TITLE_INITIAL :
887                                   IMG_BACKGROUND_TITLE);
888   int graphic_local = base + nr;
889
890   if (graphic_info[graphic_local].bitmap != NULL)
891     return graphic_local;
892
893   if (graphic_info[graphic_global].bitmap != NULL)
894     return graphic_global;
895
896   return IMG_UNDEFINED;
897 }
898
899 static int getTitleSound(struct TitleControlInfo *tci)
900 {
901   boolean is_image = tci->is_image;
902   int initial = tci->initial;
903   int nr = tci->local_nr;
904   int mode = (initial ? GAME_MODE_TITLE_INITIAL : GAME_MODE_TITLE);
905   int base = (is_image ?
906               (initial ? SND_BACKGROUND_TITLESCREEN_INITIAL_1 :
907                          SND_BACKGROUND_TITLESCREEN_1) :
908               (initial ? SND_BACKGROUND_TITLEMESSAGE_INITIAL_1 :
909                          SND_BACKGROUND_TITLEMESSAGE_1));
910   int sound_global = menu.sound[mode];
911   int sound_local = base + nr;
912
913 #if 0
914   printf("::: %d, %d, %d: %d ['%s'], %d ['%s']\n",
915          nr, initial, is_image,
916          sound_global, getSoundListEntry(sound_global)->filename,
917          sound_local, getSoundListEntry(sound_local)->filename);
918 #endif
919
920   if (!strEqual(getSoundListEntry(sound_local)->filename, UNDEFINED_FILENAME))
921     return sound_local;
922
923   if (!strEqual(getSoundListEntry(sound_global)->filename, UNDEFINED_FILENAME))
924     return sound_global;
925
926   return SND_UNDEFINED;
927 }
928
929 static int getTitleMusic(struct TitleControlInfo *tci)
930 {
931   boolean is_image = tci->is_image;
932   int initial = tci->initial;
933   int nr = tci->local_nr;
934   int mode = (initial ? GAME_MODE_TITLE_INITIAL : GAME_MODE_TITLE);
935   int base = (is_image ?
936               (initial ? MUS_BACKGROUND_TITLESCREEN_INITIAL_1 :
937                          MUS_BACKGROUND_TITLESCREEN_1) :
938               (initial ? MUS_BACKGROUND_TITLEMESSAGE_INITIAL_1 :
939                          MUS_BACKGROUND_TITLEMESSAGE_1));
940   int music_global = menu.music[mode];
941   int music_local = base + nr;
942
943 #if 0
944   printf("::: %d, %d, %d: %d ['%s'], %d ['%s']\n",
945          nr, initial, is_image,
946          music_global, getMusicListEntry(music_global)->filename,
947          music_local, getMusicListEntry(music_local)->filename);
948 #endif
949
950   if (!strEqual(getMusicListEntry(music_local)->filename, UNDEFINED_FILENAME))
951     return music_local;
952
953   if (!strEqual(getMusicListEntry(music_global)->filename, UNDEFINED_FILENAME))
954     return music_global;
955
956   return MUS_UNDEFINED;
957 }
958
959 static struct TitleFadingInfo getTitleFading(struct TitleControlInfo *tci)
960 {
961   boolean is_image = tci->is_image;
962   boolean initial = tci->initial;
963   boolean first = tci->first;
964   int nr = tci->local_nr;
965   struct TitleMessageInfo tmi;
966   struct TitleFadingInfo ti;
967
968   tmi = (is_image ? (initial ? (first ?
969                                 titlescreen_initial_first[nr] :
970                                 titlescreen_initial[nr])
971                              : (first ?
972                                 titlescreen_first[nr] :
973                                 titlescreen[nr]))
974                   : (initial ? (first ?
975                                 titlemessage_initial_first[nr] :
976                                 titlemessage_initial[nr])
977                              : (first ?
978                                 titlemessage_first[nr] :
979                                 titlemessage[nr])));
980
981   ti.fade_mode  = tmi.fade_mode;
982   ti.fade_delay = tmi.fade_delay;
983   ti.post_delay = tmi.post_delay;
984   ti.auto_delay = tmi.auto_delay;
985
986   return ti;
987 }
988
989 static int compareTitleControlInfo(const void *object1, const void *object2)
990 {
991   const struct TitleControlInfo *tci1 = (struct TitleControlInfo *)object1;
992   const struct TitleControlInfo *tci2 = (struct TitleControlInfo *)object2;
993   int compare_result;
994
995   if (tci1->initial != tci2->initial)
996     compare_result = (tci1->initial ? -1 : +1);
997   else if (tci1->sort_priority != tci2->sort_priority)
998     compare_result = tci1->sort_priority - tci2->sort_priority;
999   else if (tci1->is_image != tci2->is_image)
1000     compare_result = (tci1->is_image ? -1 : +1);
1001   else
1002     compare_result = tci1->local_nr - tci2->local_nr;
1003
1004   return compare_result;
1005 }
1006
1007 static void InitializeTitleControlsExt_AddTitleInfo(boolean is_image,
1008                                                     boolean initial,
1009                                                     int nr, int sort_priority)
1010 {
1011   title_controls[num_title_screens].is_image = is_image;
1012   title_controls[num_title_screens].initial = initial;
1013   title_controls[num_title_screens].local_nr = nr;
1014   title_controls[num_title_screens].sort_priority = sort_priority;
1015
1016   title_controls[num_title_screens].first = FALSE;      // will be set later
1017
1018   num_title_screens++;
1019 }
1020
1021 static void InitializeTitleControls_CheckTitleInfo(boolean initial)
1022 {
1023   int i;
1024
1025   for (i = 0; i < MAX_NUM_TITLE_IMAGES; i++)
1026   {
1027     int graphic = getTitleScreenGraphic(i, initial);
1028     Bitmap *bitmap = graphic_info[graphic].bitmap;
1029     int sort_priority = graphic_info[graphic].sort_priority;
1030
1031     if (bitmap != NULL)
1032       InitializeTitleControlsExt_AddTitleInfo(TRUE, initial, i, sort_priority);
1033   }
1034
1035   for (i = 0; i < MAX_NUM_TITLE_MESSAGES; i++)
1036   {
1037     struct TitleMessageInfo *tmi = getTitleMessageInfo(i, initial);
1038     char *filename = getLevelSetTitleMessageFilename(i, initial);
1039     int sort_priority = tmi->sort_priority;
1040
1041     if (filename != NULL)
1042       InitializeTitleControlsExt_AddTitleInfo(FALSE, initial, i, sort_priority);
1043   }
1044 }
1045
1046 static void InitializeTitleControls(boolean show_title_initial)
1047 {
1048   num_title_screens = 0;
1049
1050   // 1st step: initialize title screens for game start (only when starting)
1051   if (show_title_initial)
1052     InitializeTitleControls_CheckTitleInfo(TRUE);
1053
1054   // 2nd step: initialize title screens for current level set
1055   InitializeTitleControls_CheckTitleInfo(FALSE);
1056
1057   // sort title screens according to sort_priority and title number
1058   qsort(title_controls, num_title_screens, sizeof(struct TitleControlInfo),
1059         compareTitleControlInfo);
1060
1061   // mark first title screen
1062   title_controls[0].first = TRUE;
1063 }
1064
1065 static boolean visibleMenuPos(struct MenuPosInfo *pos)
1066 {
1067   return (pos != NULL && pos->x != -1 && pos->y != -1);
1068 }
1069
1070 static boolean visibleTextPos(struct TextPosInfo *pos)
1071 {
1072   return (pos != NULL && pos->x != -1 && pos->y != -1);
1073 }
1074
1075 static void InitializeMainControls(void)
1076 {
1077   boolean local_team_mode = (!network.enabled && setup.team_mode);
1078   int i;
1079
1080   // set main control text values to dynamically determined values
1081   sprintf(main_text_name,         "%s",   local_team_mode ? "Team:" : "Name:");
1082
1083   strcpy(main_text_first_level,  int2str(leveldir_current->first_level,
1084                                          menu.main.text.first_level.size));
1085   strcpy(main_text_last_level,   int2str(leveldir_current->last_level,
1086                                          menu.main.text.last_level.size));
1087   strcpy(main_text_level_number, int2str(level_nr,
1088                                          menu.main.text.level_number.size));
1089
1090   main_text_level_year          = leveldir_current->year;
1091   main_text_level_imported_from = leveldir_current->imported_from;
1092   main_text_level_imported_by   = leveldir_current->imported_by;
1093   main_text_level_tested_by     = leveldir_current->tested_by;
1094
1095   main_text_title_1 = getConfigProgramTitleString();
1096   main_text_title_2 = getConfigProgramCopyrightString();
1097   main_text_title_3 = getConfigProgramCompanyString();
1098
1099   // set main control screen positions to dynamically determined values
1100   for (i = 0; main_controls[i].nr != -1; i++)
1101   {
1102     struct MainControlInfo *mci = &main_controls[i];
1103     int nr                         = mci->nr;
1104     struct MenuPosInfo *pos_button = mci->pos_button;
1105     struct TextPosInfo *pos_text   = mci->pos_text;
1106     struct TextPosInfo *pos_input  = mci->pos_input;
1107     char *text                     = (mci->text  ? *mci->text  : NULL);
1108     char *input                    = (mci->input ? *mci->input : NULL);
1109     int button_graphic             = mci->button_graphic;
1110     int font_text                  = (pos_text  ? pos_text->font  : -1);
1111     int font_input                 = (pos_input ? pos_input->font : -1);
1112
1113     int font_text_width   = (font_text  != -1 ? getFontWidth(font_text)   : 0);
1114     int font_text_height  = (font_text  != -1 ? getFontHeight(font_text)  : 0);
1115     int font_input_width  = (font_input != -1 ? getFontWidth(font_input)  : 0);
1116     int font_input_height = (font_input != -1 ? getFontHeight(font_input) : 0);
1117     int text_chars  = (text  != NULL ? strlen(text)  : 0);
1118     int input_chars = (input != NULL ? strlen(input) : 0);
1119
1120     int button_width =
1121       (button_graphic != -1 ? graphic_info[button_graphic].width  : 0);
1122     int button_height =
1123       (button_graphic != -1 ? graphic_info[button_graphic].height : 0);
1124     int text_width   = font_text_width * text_chars;
1125     int text_height  = font_text_height;
1126     int input_width  = font_input_width * input_chars;
1127     int input_height = font_input_height;
1128
1129     if (nr == MAIN_CONTROL_NAME)
1130     {
1131       menu.main.input.name.width  = input_width;
1132       menu.main.input.name.height = input_height;
1133     }
1134
1135     if (pos_button != NULL)             // (x/y may be -1/-1 here)
1136     {
1137       pos_button->width  = button_width;
1138       pos_button->height = button_height;
1139     }
1140
1141     if (pos_text != NULL)               // (x/y may be -1/-1 here)
1142     {
1143       // calculate text size -- needed for text alignment
1144       boolean calculate_text_size = (text != NULL);
1145
1146       if (pos_text->width == -1 || calculate_text_size)
1147         pos_text->width = text_width;
1148       if (pos_text->height == -1 || calculate_text_size)
1149         pos_text->height = text_height;
1150
1151       if (visibleMenuPos(pos_button))
1152       {
1153         if (pos_text->x == -1)
1154           pos_text->x = pos_button->x + pos_button->width;
1155         if (pos_text->y == -1)
1156           pos_text->y =
1157             pos_button->y + (pos_button->height - pos_text->height) / 2;
1158       }
1159     }
1160
1161     if (pos_input != NULL)              // (x/y may be -1/-1 here)
1162     {
1163       if (visibleTextPos(pos_text))
1164       {
1165         if (pos_input->x == -1)
1166           pos_input->x = pos_text->x + pos_text->width;
1167         if (pos_input->y == -1)
1168           pos_input->y = pos_text->y;
1169       }
1170
1171       if (pos_input->width == -1)
1172         pos_input->width = input_width;
1173       if (pos_input->height == -1)
1174         pos_input->height = input_height;
1175     }
1176   }
1177 }
1178
1179 static void DrawPressedGraphicThruMask(int dst_x, int dst_y,
1180                                        int graphic, boolean pressed)
1181 {
1182   struct GraphicInfo *g = &graphic_info[graphic];
1183   Bitmap *src_bitmap;
1184   int src_x, src_y;
1185   int xoffset = (pressed ? g->pressed_xoffset : 0);
1186   int yoffset = (pressed ? g->pressed_yoffset : 0);
1187
1188   getFixedGraphicSource(graphic, 0, &src_bitmap, &src_x, &src_y);
1189
1190   BlitBitmapMasked(src_bitmap, drawto, src_x + xoffset, src_y + yoffset,
1191                    g->width, g->height, dst_x, dst_y);
1192 }
1193
1194 static void DrawCursorAndText_Main_Ext(int nr, boolean active_text,
1195                                        boolean active_input,
1196                                        boolean pressed_button)
1197 {
1198   int i;
1199
1200   for (i = 0; main_controls[i].nr != -1; i++)
1201   {
1202     struct MainControlInfo *mci = &main_controls[i];
1203
1204     if (mci->nr == nr || nr == -1)
1205     {
1206       struct MenuPosInfo *pos_button = mci->pos_button;
1207       struct TextPosInfo *pos_text   = mci->pos_text;
1208       struct TextPosInfo *pos_input  = mci->pos_input;
1209       char *text                     = (mci->text  ? *mci->text  : NULL);
1210       char *input                    = (mci->input ? *mci->input : NULL);
1211       int button_graphic             = mci->button_graphic;
1212       int font_text                  = (pos_text  ? pos_text->font  : -1);
1213       int font_input                 = (pos_input ? pos_input->font : -1);
1214
1215       if (active_text)
1216       {
1217         button_graphic = BUTTON_ACTIVE(button_graphic);
1218         font_text = FONT_ACTIVE(font_text);
1219       }
1220
1221       if (active_input)
1222       {
1223         font_input = FONT_ACTIVE(font_input);
1224       }
1225
1226       if (visibleMenuPos(pos_button))
1227       {
1228         struct MenuPosInfo *pos = pos_button;
1229         int x = mSX + pos->x;
1230         int y = mSY + pos->y;
1231
1232         DrawBackgroundForGraphic(x, y, pos->width, pos->height, button_graphic);
1233         DrawPressedGraphicThruMask(x, y, button_graphic, pressed_button);
1234       }
1235
1236       if (visibleTextPos(pos_text) && text != NULL)
1237       {
1238         struct TextPosInfo *pos = pos_text;
1239         int x = mSX + ALIGNED_TEXT_XPOS(pos);
1240         int y = mSY + ALIGNED_TEXT_YPOS(pos);
1241
1242 #if 1
1243         // (check why/if this is needed)
1244         DrawBackgroundForFont(x, y, pos->width, pos->height, font_text);
1245 #endif
1246         DrawText(x, y, text, font_text);
1247       }
1248
1249       if (visibleTextPos(pos_input) && input != NULL)
1250       {
1251         struct TextPosInfo *pos = pos_input;
1252         int x = mSX + ALIGNED_TEXT_XPOS(pos);
1253         int y = mSY + ALIGNED_TEXT_YPOS(pos);
1254
1255 #if 1
1256         // (check why/if this is needed)
1257         DrawBackgroundForFont(x, y, pos->width, pos->height, font_input);
1258 #endif
1259         DrawText(x, y, input, font_input);
1260       }
1261     }
1262   }
1263 }
1264
1265 static void DrawCursorAndText_Main(int nr, boolean active_text,
1266                                    boolean pressed_button)
1267 {
1268   DrawCursorAndText_Main_Ext(nr, active_text, FALSE, pressed_button);
1269 }
1270
1271 #if 0
1272 static void DrawCursorAndText_Main_Input(int nr, boolean active_text,
1273                                          boolean pressed_button)
1274 {
1275   DrawCursorAndText_Main_Ext(nr, active_text, TRUE, pressed_button);
1276 }
1277 #endif
1278
1279 static struct MainControlInfo *getMainControlInfo(int nr)
1280 {
1281   int i;
1282
1283   for (i = 0; main_controls[i].nr != -1; i++)
1284     if (main_controls[i].nr == nr)
1285       return &main_controls[i];
1286
1287   return NULL;
1288 }
1289
1290 static boolean insideMenuPosRect(struct MenuPosInfo *rect, int x, int y)
1291 {
1292   if (rect == NULL)
1293     return FALSE;
1294
1295   int rect_x = ALIGNED_TEXT_XPOS(rect);
1296   int rect_y = ALIGNED_TEXT_YPOS(rect);
1297
1298   return (x >= rect_x && x < rect_x + rect->width &&
1299           y >= rect_y && y < rect_y + rect->height);
1300 }
1301
1302 static boolean insideTextPosRect(struct TextPosInfo *rect, int x, int y)
1303 {
1304   if (rect == NULL)
1305     return FALSE;
1306
1307   int rect_x = ALIGNED_TEXT_XPOS(rect);
1308   int rect_y = ALIGNED_TEXT_YPOS(rect);
1309
1310 #if 0
1311   printf("::: insideTextPosRect: (%d, %d), (%d, %d) [%d, %d] (%d, %d) => %d\n",
1312          x, y, rect_x, rect_y, rect->x, rect->y, rect->width, rect->height,
1313          (x >= rect_x && x < rect_x + rect->width &&
1314           y >= rect_y && y < rect_y + rect->height));
1315 #endif
1316
1317   return (x >= rect_x && x < rect_x + rect->width &&
1318           y >= rect_y && y < rect_y + rect->height);
1319 }
1320
1321 static boolean insidePreviewRect(struct PreviewInfo *preview, int x, int y)
1322 {
1323   int rect_width  = preview->xsize * preview->tile_size;
1324   int rect_height = preview->ysize * preview->tile_size;
1325   int rect_x = ALIGNED_XPOS(preview->x, rect_width,  preview->align);
1326   int rect_y = ALIGNED_YPOS(preview->y, rect_height, preview->valign);
1327
1328   return (x >= rect_x && x < rect_x + rect_width &&
1329           y >= rect_y && y < rect_y + rect_height);
1330 }
1331
1332 static void AdjustScrollbar(int id, int items_max, int items_visible,
1333                             int item_position)
1334 {
1335   struct GadgetInfo *gi = screen_gadget[id];
1336
1337   if (item_position > items_max - items_visible)
1338     item_position = items_max - items_visible;
1339
1340   ModifyGadget(gi, GDI_SCROLLBAR_ITEMS_MAX, items_max,
1341                GDI_SCROLLBAR_ITEMS_VISIBLE, items_visible,
1342                GDI_SCROLLBAR_ITEM_POSITION, item_position, GDI_END);
1343 }
1344
1345 static void AdjustChooseTreeScrollbar(int id, int first_entry, TreeInfo *ti)
1346 {
1347   AdjustScrollbar(id, numTreeInfoInGroup(ti), NUM_MENU_ENTRIES_ON_SCREEN,
1348                   first_entry);
1349 }
1350
1351 static void clearMenuListArea(void)
1352 {
1353   int scrollbar_xpos = mSX + SC_SCROLLBAR_XPOS + menu.scrollbar_xoffset;
1354
1355   // correct scrollbar position if placed outside menu (playfield) area
1356   if (scrollbar_xpos > SX + SC_SCROLLBAR_XPOS)
1357     scrollbar_xpos = SX + SC_SCROLLBAR_XPOS;
1358
1359   // clear menu list area, but not title or scrollbar
1360   DrawBackground(mSX, mSY + MENU_SCREEN_START_YPOS * 32,
1361                  scrollbar_xpos - mSX, NUM_MENU_ENTRIES_ON_SCREEN * 32);
1362 }
1363
1364 static void drawCursorExt(int xpos, int ypos, boolean active, int graphic)
1365 {
1366   static int cursor_array[MAX_LEV_FIELDY];
1367   int x = mSX + TILEX * xpos;
1368   int y = mSY + TILEY * (MENU_SCREEN_START_YPOS + ypos);
1369
1370   if (xpos == 0)
1371   {
1372     if (graphic != -1)
1373       cursor_array[ypos] = graphic;
1374     else
1375       graphic = cursor_array[ypos];
1376   }
1377
1378   if (active)
1379     graphic = BUTTON_ACTIVE(graphic);
1380
1381   DrawBackgroundForGraphic(x, y, TILEX, TILEY, graphic);
1382   DrawFixedGraphicThruMaskExt(drawto, x, y, graphic, 0);
1383 }
1384
1385 static void initCursor(int ypos, int graphic)
1386 {
1387   drawCursorExt(0, ypos, FALSE, graphic);
1388 }
1389
1390 static void drawCursor(int ypos, boolean active)
1391 {
1392   drawCursorExt(0, ypos, active, -1);
1393 }
1394
1395 static void drawCursorXY(int xpos, int ypos, int graphic)
1396 {
1397   drawCursorExt(xpos, ypos, FALSE, graphic);
1398 }
1399
1400 static void drawChooseTreeCursor(int ypos, boolean active)
1401 {
1402   drawCursorExt(0, ypos, active, -1);
1403 }
1404
1405 static void DrawHeadline(void)
1406 {
1407   DrawTextSCentered(MENU_TITLE1_YPOS, FONT_TITLE_1, main_text_title_1);
1408   DrawTextSCentered(MENU_TITLE2_YPOS, FONT_TITLE_2, main_text_title_2);
1409 }
1410
1411 static void DrawTitleScreenImage(int nr, boolean initial)
1412 {
1413   int graphic = getTitleScreenGraphic(nr, initial);
1414   Bitmap *bitmap = graphic_info[graphic].bitmap;
1415   int width  = graphic_info[graphic].width;
1416   int height = graphic_info[graphic].height;
1417   int src_x = graphic_info[graphic].src_x;
1418   int src_y = graphic_info[graphic].src_y;
1419   int dst_x, dst_y;
1420
1421   if (bitmap == NULL)
1422     return;
1423
1424   if (width > WIN_XSIZE)
1425   {
1426     // image width too large for window => center image horizontally
1427     src_x = (width - WIN_XSIZE) / 2;
1428     width = WIN_XSIZE;
1429   }
1430
1431   if (height > WIN_YSIZE)
1432   {
1433     // image height too large for window => center image vertically
1434     src_y = (height - WIN_YSIZE) / 2;
1435     height = WIN_YSIZE;
1436   }
1437
1438   // always display title screens centered
1439   dst_x = (WIN_XSIZE - width) / 2;
1440   dst_y = (WIN_YSIZE - height) / 2;
1441
1442   SetDrawBackgroundMask(REDRAW_ALL);
1443   SetWindowBackgroundImage(getTitleBackground(nr, initial, TRUE));
1444
1445   ClearRectangleOnBackground(drawto, 0, 0, WIN_XSIZE, WIN_YSIZE);
1446
1447   if (DrawingOnBackground(dst_x, dst_y))
1448     BlitBitmapMasked(bitmap, drawto, src_x, src_y, width, height, dst_x, dst_y);
1449   else
1450     BlitBitmap(bitmap, drawto, src_x, src_y, width, height, dst_x, dst_y);
1451
1452   redraw_mask = REDRAW_ALL;
1453 }
1454
1455 static void DrawTitleScreenMessage(int nr, boolean initial)
1456 {
1457   char *filename = getLevelSetTitleMessageFilename(nr, initial);
1458   struct TitleMessageInfo *tmi = getTitleMessageInfo(nr, initial);
1459
1460   if (filename == NULL)
1461     return;
1462
1463   // force TITLE font on title message screen
1464   SetFontStatus(getTitleMessageGameMode(initial));
1465
1466   // if chars *and* width set to "-1", automatically determine width
1467   if (tmi->chars == -1 && tmi->width == -1)
1468     tmi->width = viewport.window[game_status].width;
1469
1470   // if lines *and* height set to "-1", automatically determine height
1471   if (tmi->lines == -1 && tmi->height == -1)
1472     tmi->height = viewport.window[game_status].height;
1473
1474   // if chars set to "-1", automatically determine by text and font width
1475   if (tmi->chars == -1)
1476     tmi->chars = tmi->width / getFontWidth(tmi->font);
1477   else
1478     tmi->width = tmi->chars * getFontWidth(tmi->font);
1479
1480   // if lines set to "-1", automatically determine by text and font height
1481   if (tmi->lines == -1)
1482     tmi->lines = tmi->height / getFontHeight(tmi->font);
1483   else
1484     tmi->height = tmi->lines * getFontHeight(tmi->font);
1485
1486   // if x set to "-1", automatically determine by width and alignment
1487   if (tmi->x == -1)
1488     tmi->x = -1 * ALIGNED_XPOS(0, tmi->width, tmi->align);
1489
1490   // if y set to "-1", automatically determine by height and alignment
1491   if (tmi->y == -1)
1492     tmi->y = -1 * ALIGNED_YPOS(0, tmi->height, tmi->valign);
1493
1494   SetDrawBackgroundMask(REDRAW_ALL);
1495   SetWindowBackgroundImage(getTitleBackground(nr, initial, FALSE));
1496
1497   ClearRectangleOnBackground(drawto, 0, 0, WIN_XSIZE, WIN_YSIZE);
1498
1499   DrawTextFile(ALIGNED_TEXT_XPOS(tmi), ALIGNED_TEXT_YPOS(tmi),
1500                filename, tmi->font, tmi->chars, -1, tmi->lines, 0, -1,
1501                tmi->autowrap, tmi->centered, tmi->parse_comments);
1502
1503   ResetFontStatus();
1504 }
1505
1506 static void DrawTitleScreen(void)
1507 {
1508   KeyboardAutoRepeatOff();
1509
1510   HandleTitleScreen(0, 0, 0, 0, MB_MENU_INITIALIZE);
1511 }
1512
1513 static boolean CheckTitleScreen(boolean levelset_has_changed)
1514 {
1515   static boolean show_title_initial = TRUE;
1516   boolean show_titlescreen = FALSE;
1517
1518   // needed to be able to skip title screen, if no image or message defined
1519   InitializeTitleControls(show_title_initial);
1520
1521   if (setup.show_titlescreen && (show_title_initial || levelset_has_changed))
1522     show_titlescreen = TRUE;
1523
1524   // show initial title images and messages only once at program start
1525   show_title_initial = FALSE;
1526
1527   return (show_titlescreen && num_title_screens > 0);
1528 }
1529
1530 void DrawMainMenu(void)
1531 {
1532   static LevelDirTree *leveldir_last_valid = NULL;
1533   boolean levelset_has_changed = FALSE;
1534   int fade_mask = REDRAW_FIELD;
1535
1536   LimitScreenUpdates(FALSE);
1537
1538   FadeSetLeaveScreen();
1539
1540   // do not fade out here -- function may continue and fade on editor screen
1541
1542   UnmapAllGadgets();
1543   FadeMenuSoundsAndMusic();
1544
1545   ExpireSoundLoops(FALSE);
1546
1547   KeyboardAutoRepeatOn();
1548
1549   audio.sound_deactivated = FALSE;
1550
1551   GetPlayerConfig();
1552
1553   // needed if last screen was the playing screen, invoked from level editor
1554   if (level_editor_test_game)
1555   {
1556     CloseDoor(DOOR_CLOSE_ALL);
1557
1558     SetGameStatus(GAME_MODE_EDITOR);
1559
1560     DrawLevelEd();
1561
1562     return;
1563   }
1564
1565   // needed if last screen was the setup screen and fullscreen state changed
1566   // (moved to "execSetupGraphics()" to change fullscreen state directly)
1567   // ToggleFullscreenOrChangeWindowScalingIfNeeded();
1568
1569   // leveldir_current may be invalid (level group, parent link)
1570   if (!validLevelSeries(leveldir_current))
1571     leveldir_current = getFirstValidTreeInfoEntry(leveldir_last_valid);
1572
1573   if (leveldir_current != leveldir_last_valid)
1574     levelset_has_changed = TRUE;
1575
1576   // store valid level series information
1577   leveldir_last_valid = leveldir_current;
1578
1579   init_last = init;                     // switch to new busy animation
1580
1581   // needed if last screen (level choice) changed graphics, sounds or music
1582   ReloadCustomArtwork(0);
1583
1584   if (CheckTitleScreen(levelset_has_changed))
1585   {
1586     SetGameStatus(GAME_MODE_TITLE);
1587
1588     DrawTitleScreen();
1589
1590     return;
1591   }
1592
1593   if (redraw_mask & REDRAW_ALL)
1594     fade_mask = REDRAW_ALL;
1595
1596   if (CheckFadeAll())
1597     fade_mask = REDRAW_ALL;
1598
1599   FadeOut(fade_mask);
1600
1601   // needed if different viewport properties defined for menues
1602   ChangeViewportPropertiesIfNeeded();
1603
1604   SetDrawtoField(DRAW_TO_BACKBUFFER);
1605
1606   // level_nr may have been set to value over handicap with level editor
1607   if (setup.handicap && level_nr > leveldir_current->handicap_level)
1608     level_nr = leveldir_current->handicap_level;
1609
1610   LoadLevel(level_nr);
1611   LoadScore(level_nr);
1612
1613   SaveLevelSetup_SeriesInfo();
1614
1615   // set this after "ChangeViewportPropertiesIfNeeded()" (which may reset it)
1616   SetDrawDeactivationMask(REDRAW_NONE);
1617   SetDrawBackgroundMask(REDRAW_FIELD);
1618
1619   SetMainBackgroundImage(IMG_BACKGROUND_MAIN);
1620
1621 #if 0
1622   if (fade_mask == REDRAW_ALL)
1623     RedrawGlobalBorder();
1624 #endif
1625
1626   ClearField();
1627
1628   InitializeMainControls();
1629
1630   DrawCursorAndText_Main(-1, FALSE, FALSE);
1631   DrawPreviewLevelInitial();
1632   DrawNetworkPlayers();
1633
1634   HandleMainMenu(0, 0, 0, 0, MB_MENU_INITIALIZE);
1635
1636   TapeStop();
1637   if (TAPE_IS_EMPTY(tape))
1638     LoadTape(level_nr);
1639   DrawCompleteVideoDisplay();
1640
1641   PlayMenuSoundsAndMusic();
1642
1643   // create gadgets for main menu screen
1644   FreeScreenGadgets();
1645   CreateScreenGadgets();
1646
1647   // may be required if audio buttons shown on tape and changed in setup menu
1648   FreeGameButtons();
1649   CreateGameButtons();
1650
1651   // map gadgets for main menu screen
1652   MapTapeButtons();
1653   MapScreenMenuGadgets(SCREEN_MASK_MAIN);
1654   UpdateScreenMenuGadgets(SCREEN_MASK_MAIN_HAS_SOLUTION, hasSolutionTape());
1655
1656   // copy actual game door content to door double buffer for OpenDoor()
1657   BlitBitmap(drawto, bitmap_db_door_1, DX, DY, DXSIZE, DYSIZE, 0, 0);
1658   BlitBitmap(drawto, bitmap_db_door_2, VX, VY, VXSIZE, VYSIZE, 0, 0);
1659
1660   OpenDoor(GetDoorState() | DOOR_NO_DELAY | DOOR_FORCE_REDRAW);
1661
1662   DrawMaskedBorder(fade_mask);
1663
1664   FadeIn(fade_mask);
1665   FadeSetEnterMenu();
1666
1667   // update screen area with special editor door
1668   redraw_mask |= REDRAW_ALL;
1669   BackToFront();
1670
1671   SetMouseCursor(CURSOR_DEFAULT);
1672
1673   OpenDoor(DOOR_CLOSE_1 | DOOR_OPEN_2);
1674 }
1675
1676 static void gotoTopLevelDir(void)
1677 {
1678   // move upwards until inside (but not above) top level directory
1679   while (leveldir_current->node_parent &&
1680          !strEqual(leveldir_current->node_parent->subdir, STRING_TOP_DIRECTORY))
1681   {
1682     // write a "path" into level tree for easy navigation to last level
1683     if (leveldir_current->node_parent->node_group->cl_first == -1)
1684     {
1685       int num_leveldirs = numTreeInfoInGroup(leveldir_current);
1686       int leveldir_pos = posTreeInfo(leveldir_current);
1687       int num_page_entries;
1688       int cl_first, cl_cursor;
1689
1690       if (num_leveldirs <= NUM_MENU_ENTRIES_ON_SCREEN)
1691         num_page_entries = num_leveldirs;
1692       else
1693         num_page_entries = NUM_MENU_ENTRIES_ON_SCREEN;
1694
1695       cl_first = MAX(0, leveldir_pos - num_page_entries + 1);
1696       cl_cursor = leveldir_pos - cl_first;
1697
1698       leveldir_current->node_parent->node_group->cl_first = cl_first;
1699       leveldir_current->node_parent->node_group->cl_cursor = cl_cursor;
1700     }
1701
1702     leveldir_current = leveldir_current->node_parent;
1703   }
1704 }
1705
1706 void HandleTitleScreen(int mx, int my, int dx, int dy, int button)
1707 {
1708   static unsigned int title_delay = 0;
1709   static int title_screen_nr = 0;
1710   static int last_sound = -1, last_music = -1;
1711   boolean return_to_main_menu = FALSE;
1712   struct TitleControlInfo *tci;
1713   int sound, music;
1714
1715   if (button == MB_MENU_INITIALIZE)
1716   {
1717     title_delay = 0;
1718     title_screen_nr = 0;
1719     tci = &title_controls[title_screen_nr];
1720
1721     SetAnimStatus(getTitleAnimMode(tci));
1722
1723     last_sound = SND_UNDEFINED;
1724     last_music = MUS_UNDEFINED;
1725
1726     if (num_title_screens != 0)
1727     {
1728       FadeSetEnterScreen();
1729
1730       // use individual title fading instead of global "enter screen" fading
1731       fading = getTitleFading(tci);
1732     }
1733
1734     if (game_status_last_screen == GAME_MODE_INFO)
1735     {
1736       if (num_title_screens == 0)
1737       {
1738         // switch game mode from title screen mode back to info screen mode
1739         SetGameStatus(GAME_MODE_INFO);
1740
1741         // store that last screen was info screen, not main menu screen
1742         game_status_last_screen = GAME_MODE_INFO;
1743
1744         DrawInfoScreen_NotAvailable("Title screen information:",
1745                                     "No title screen for this level set.");
1746         return;
1747       }
1748
1749       FadeMenuSoundsAndMusic();
1750     }
1751
1752     FadeOut(REDRAW_ALL);
1753
1754     // title screens may have different window size
1755     ChangeViewportPropertiesIfNeeded();
1756
1757     // only required to update logic for redrawing global border
1758     ClearField();
1759
1760     if (tci->is_image)
1761       DrawTitleScreenImage(tci->local_nr, tci->initial);
1762     else
1763       DrawTitleScreenMessage(tci->local_nr, tci->initial);
1764
1765     sound = getTitleSound(tci);
1766     music = getTitleMusic(tci);
1767
1768     if (sound != last_sound)
1769       PlayMenuSoundExt(sound);
1770     if (music != last_music)
1771       PlayMenuMusicExt(music);
1772
1773     last_sound = sound;
1774     last_music = music;
1775
1776     SetMouseCursor(CURSOR_NONE);
1777
1778     FadeIn(REDRAW_ALL);
1779
1780     DelayReached(&title_delay, 0);      // reset delay counter
1781
1782     return;
1783   }
1784
1785   if (fading.auto_delay > 0 && DelayReached(&title_delay, fading.auto_delay))
1786     button = MB_MENU_CHOICE;
1787
1788   if (button == MB_MENU_LEAVE)
1789   {
1790     return_to_main_menu = TRUE;
1791   }
1792   else if (button == MB_MENU_CHOICE)
1793   {
1794     if (game_status_last_screen == GAME_MODE_INFO && num_title_screens == 0)
1795     {
1796       SetGameStatus(GAME_MODE_INFO);
1797
1798       info_mode = INFO_MODE_MAIN;
1799
1800       DrawInfoScreen();
1801
1802       return;
1803     }
1804
1805     title_screen_nr++;
1806
1807     if (title_screen_nr < num_title_screens)
1808     {
1809       tci = &title_controls[title_screen_nr];
1810
1811       SetAnimStatus(getTitleAnimMode(tci));
1812
1813       sound = getTitleSound(tci);
1814       music = getTitleMusic(tci);
1815
1816       if (last_sound != SND_UNDEFINED && sound != last_sound)
1817         FadeSound(last_sound);
1818       if (last_music != MUS_UNDEFINED && music != last_music)
1819         FadeMusic();
1820
1821       fading = getTitleFading(tci);
1822
1823       FadeOut(REDRAW_ALL);
1824
1825       if (tci->is_image)
1826         DrawTitleScreenImage(tci->local_nr, tci->initial);
1827       else
1828         DrawTitleScreenMessage(tci->local_nr, tci->initial);
1829
1830       sound = getTitleSound(tci);
1831       music = getTitleMusic(tci);
1832
1833       if (sound != last_sound)
1834         PlayMenuSoundExt(sound);
1835       if (music != last_music)
1836         PlayMenuMusicExt(music);
1837
1838       last_sound = sound;
1839       last_music = music;
1840
1841       FadeIn(REDRAW_ALL);
1842
1843       DelayReached(&title_delay, 0);    // reset delay counter
1844     }
1845     else
1846     {
1847       FadeMenuSoundsAndMusic();
1848
1849       return_to_main_menu = TRUE;
1850     }
1851   }
1852
1853   if (return_to_main_menu)
1854   {
1855     SetMouseCursor(CURSOR_DEFAULT);
1856
1857     // force full menu screen redraw after displaying title screens
1858     redraw_mask = REDRAW_ALL;
1859
1860     if (game_status_last_screen == GAME_MODE_INFO)
1861     {
1862       SetGameStatus(GAME_MODE_INFO);
1863
1864       info_mode = INFO_MODE_MAIN;
1865
1866       DrawInfoScreen();
1867     }
1868     else        // default: return to main menu
1869     {
1870       SetGameStatus(GAME_MODE_MAIN);
1871
1872       DrawMainMenu();
1873     }
1874   }
1875 }
1876
1877 static void HandleMainMenu_SelectLevel(int step, int direction,
1878                                        int selected_level_nr)
1879 {
1880   int old_level_nr = level_nr;
1881   int new_level_nr;
1882
1883   if (selected_level_nr != NO_DIRECT_LEVEL_SELECT)
1884     new_level_nr = selected_level_nr;
1885   else
1886     new_level_nr = old_level_nr + step * direction;
1887
1888   if (new_level_nr < leveldir_current->first_level)
1889     new_level_nr = leveldir_current->first_level;
1890   if (new_level_nr > leveldir_current->last_level)
1891     new_level_nr = leveldir_current->last_level;
1892
1893   if (setup.handicap && new_level_nr > leveldir_current->handicap_level)
1894   {
1895     // skipping levels is only allowed when trying to skip single level
1896     if (setup.skip_levels && new_level_nr == old_level_nr + 1 &&
1897         Request("Level still unsolved! Skip despite handicap?", REQ_ASK))
1898     {
1899       leveldir_current->handicap_level++;
1900       SaveLevelSetup_SeriesInfo();
1901     }
1902
1903     new_level_nr = leveldir_current->handicap_level;
1904   }
1905
1906   if (new_level_nr != old_level_nr)
1907   {
1908     struct MainControlInfo *mci= getMainControlInfo(MAIN_CONTROL_LEVEL_NUMBER);
1909
1910     PlaySound(SND_MENU_ITEM_SELECTING);
1911
1912     level_nr = new_level_nr;
1913
1914     DrawText(mSX + mci->pos_text->x, mSY + mci->pos_text->y,
1915              int2str(level_nr, menu.main.text.level_number.size),
1916              mci->pos_text->font);
1917
1918     LoadLevel(level_nr);
1919     DrawPreviewLevelInitial();
1920
1921     TapeErase();
1922     LoadTape(level_nr);
1923     DrawCompleteVideoDisplay();
1924
1925     SaveLevelSetup_SeriesInfo();
1926
1927     UpdateScreenMenuGadgets(SCREEN_MASK_MAIN_HAS_SOLUTION, hasSolutionTape());
1928
1929     // needed because DrawPreviewLevelInitial() takes some time
1930     BackToFront();
1931     // SyncDisplay();
1932   }
1933 }
1934
1935 void HandleMainMenu(int mx, int my, int dx, int dy, int button)
1936 {
1937   static int choice = MAIN_CONTROL_GAME;
1938   static boolean button_pressed_last = FALSE;
1939   boolean button_pressed = FALSE;
1940   int pos = choice;
1941   int i;
1942
1943   if (button == MB_MENU_INITIALIZE)
1944   {
1945     DrawCursorAndText_Main(choice, TRUE, FALSE);
1946
1947     return;
1948   }
1949
1950   if (mx || my)         // mouse input
1951   {
1952     pos = -1;
1953
1954     for (i = 0; main_controls[i].nr != -1; i++)
1955     {
1956       if (insideMenuPosRect(main_controls[i].pos_button, mx - mSX, my - mSY) ||
1957           insideTextPosRect(main_controls[i].pos_text,   mx - mSX, my - mSY) ||
1958           insideTextPosRect(main_controls[i].pos_input,  mx - mSX, my - mSY))
1959       {
1960         pos = main_controls[i].nr;
1961
1962         break;
1963       }
1964     }
1965
1966     // check if level preview was clicked
1967     if (insidePreviewRect(&preview, mx - SX, my - SY))
1968       pos = MAIN_CONTROL_GAME;
1969
1970     // handle pressed/unpressed state for active/inactive menu buttons
1971     // (if pos != -1, "i" contains index position corresponding to "pos")
1972     if (button &&
1973         pos >= MAIN_CONTROL_NAME && pos <= MAIN_CONTROL_QUIT &&
1974         insideMenuPosRect(main_controls[i].pos_button, mx - mSX, my - mSY))
1975       button_pressed = TRUE;
1976
1977     if (button_pressed != button_pressed_last)
1978     {
1979       DrawCursorAndText_Main(choice, TRUE, button_pressed);
1980
1981       if (button_pressed)
1982         PlaySound(SND_MENU_BUTTON_PRESSING);
1983       else
1984         PlaySound(SND_MENU_BUTTON_RELEASING);
1985     }
1986   }
1987   else if (dx || dy)    // keyboard input
1988   {
1989     if (dx > 0 && (choice == MAIN_CONTROL_INFO ||
1990                    choice == MAIN_CONTROL_SETUP))
1991       button = MB_MENU_CHOICE;
1992     else if (dy)
1993       pos = choice + dy;
1994   }
1995
1996   if (pos == MAIN_CONTROL_FIRST_LEVEL && !button)
1997   {
1998     HandleMainMenu_SelectLevel(MAX_LEVELS, -1, NO_DIRECT_LEVEL_SELECT);
1999   }
2000   else if (pos == MAIN_CONTROL_LAST_LEVEL && !button)
2001   {
2002     HandleMainMenu_SelectLevel(MAX_LEVELS, +1, NO_DIRECT_LEVEL_SELECT);
2003   }
2004   else if (pos == MAIN_CONTROL_LEVEL_NUMBER && !button)
2005   {
2006     CloseDoor(DOOR_CLOSE_2);
2007
2008     SetGameStatus(GAME_MODE_LEVELNR);
2009
2010     DrawChooseLevelNr();
2011   }
2012   else if (pos >= MAIN_CONTROL_NAME && pos <= MAIN_CONTROL_QUIT)
2013   {
2014     if (button)
2015     {
2016       if (pos != choice)
2017       {
2018         PlaySound(SND_MENU_ITEM_ACTIVATING);
2019
2020         DrawCursorAndText_Main(choice, FALSE, FALSE);
2021         DrawCursorAndText_Main(pos, TRUE, button_pressed);
2022
2023         choice = pos;
2024       }
2025       else if (dx != 0)
2026       {
2027         if (choice != MAIN_CONTROL_INFO &&
2028             choice != MAIN_CONTROL_SETUP)
2029           HandleMainMenu_SelectLevel(1, dx, NO_DIRECT_LEVEL_SELECT);
2030       }
2031     }
2032     else
2033     {
2034       PlaySound(SND_MENU_ITEM_SELECTING);
2035
2036       if (pos == MAIN_CONTROL_NAME)
2037       {
2038         if ((mx || my) &&
2039             insideTextPosRect(main_controls[i].pos_text, mx - mSX, my - mSY))
2040         {
2041           // special case: menu text "name/team" clicked -- toggle team mode
2042           setup.team_mode = !setup.team_mode;
2043
2044           InitializeMainControls();
2045           DrawCursorAndText_Main(choice, TRUE, FALSE);
2046
2047           DrawPreviewPlayers();
2048         }
2049         else
2050         {
2051           SetGameStatus(GAME_MODE_PSEUDO_TYPENAME);
2052
2053           HandleTypeName(strlen(setup.player_name), 0);
2054         }
2055       }
2056       else if (pos == MAIN_CONTROL_LEVELS)
2057       {
2058         if (leveldir_first)
2059         {
2060           CloseDoor(DOOR_CLOSE_2);
2061
2062           SetGameStatus(GAME_MODE_LEVELS);
2063
2064           SaveLevelSetup_LastSeries();
2065           SaveLevelSetup_SeriesInfo();
2066
2067           if (setup.internal.choose_from_top_leveldir)
2068             gotoTopLevelDir();
2069
2070           DrawChooseLevelSet();
2071         }
2072       }
2073       else if (pos == MAIN_CONTROL_SCORES)
2074       {
2075         CloseDoor(DOOR_CLOSE_2);
2076
2077         SetGameStatus(GAME_MODE_SCORES);
2078
2079         DrawHallOfFame(level_nr, -1);
2080       }
2081       else if (pos == MAIN_CONTROL_EDITOR)
2082       {
2083         if (leveldir_current->readonly &&
2084             !strEqual(setup.player_name, "Artsoft"))
2085           Request("This level is read only!", REQ_CONFIRM);
2086
2087         CloseDoor(DOOR_CLOSE_2);
2088
2089         SetGameStatus(GAME_MODE_EDITOR);
2090
2091         FadeSetEnterScreen();
2092
2093         DrawLevelEd();
2094       }
2095       else if (pos == MAIN_CONTROL_INFO)
2096       {
2097         CloseDoor(DOOR_CLOSE_2);
2098
2099         SetGameStatus(GAME_MODE_INFO);
2100
2101         info_mode = INFO_MODE_MAIN;
2102
2103         DrawInfoScreen();
2104       }
2105       else if (pos == MAIN_CONTROL_GAME)
2106       {
2107         StartGameActions(network.enabled, setup.autorecord, level.random_seed);
2108       }
2109       else if (pos == MAIN_CONTROL_SETUP)
2110       {
2111         CloseDoor(DOOR_CLOSE_2);
2112
2113         SetGameStatus(GAME_MODE_SETUP);
2114
2115         setup_mode = SETUP_MODE_MAIN;
2116
2117         DrawSetupScreen();
2118       }
2119       else if (pos == MAIN_CONTROL_QUIT)
2120       {
2121         SaveLevelSetup_LastSeries();
2122         SaveLevelSetup_SeriesInfo();
2123
2124         if (Request("Do you really want to quit?", REQ_ASK | REQ_STAY_CLOSED))
2125           SetGameStatus(GAME_MODE_QUIT);
2126       }
2127     }
2128   }
2129
2130   button_pressed_last = button_pressed;
2131 }
2132
2133
2134 // ============================================================================
2135 // info screen functions
2136 // ============================================================================
2137
2138 static struct TokenInfo *info_info;
2139 static int num_info_info;       // number of info entries shown on screen
2140 static int max_info_info;       // total number of info entries in list
2141
2142 static void execInfoTitleScreen(void)
2143 {
2144   info_mode = INFO_MODE_TITLE;
2145
2146   DrawInfoScreen();
2147 }
2148
2149 static void execInfoElements(void)
2150 {
2151   info_mode = INFO_MODE_ELEMENTS;
2152
2153   DrawInfoScreen();
2154 }
2155
2156 static void execInfoMusic(void)
2157 {
2158   info_mode = INFO_MODE_MUSIC;
2159
2160   DrawInfoScreen();
2161 }
2162
2163 static void execInfoCredits(void)
2164 {
2165   info_mode = INFO_MODE_CREDITS;
2166
2167   DrawInfoScreen();
2168 }
2169
2170 static void execInfoProgram(void)
2171 {
2172   info_mode = INFO_MODE_PROGRAM;
2173
2174   DrawInfoScreen();
2175 }
2176
2177 static void execInfoVersion(void)
2178 {
2179   info_mode = INFO_MODE_VERSION;
2180
2181   DrawInfoScreen();
2182 }
2183
2184 static void execInfoLevelSet(void)
2185 {
2186   info_mode = INFO_MODE_LEVELSET;
2187
2188   DrawInfoScreen();
2189 }
2190
2191 static void execExitInfo(void)
2192 {
2193   SetGameStatus(GAME_MODE_MAIN);
2194
2195   DrawMainMenu();
2196 }
2197
2198 static struct TokenInfo info_info_main[] =
2199 {
2200   { TYPE_ENTER_SCREEN,  execInfoTitleScreen,    "Title Screen"          },
2201   { TYPE_ENTER_SCREEN,  execInfoElements,       "Elements Info"         },
2202   { TYPE_ENTER_SCREEN,  execInfoMusic,          "Music Info"            },
2203   { TYPE_ENTER_SCREEN,  execInfoCredits,        "Credits"               },
2204   { TYPE_ENTER_SCREEN,  execInfoProgram,        "Program Info"          },
2205   { TYPE_ENTER_SCREEN,  execInfoVersion,        "Version Info"          },
2206   { TYPE_ENTER_SCREEN,  execInfoLevelSet,       "Level Set Info"        },
2207   { TYPE_EMPTY,         NULL,                   ""                      },
2208   { TYPE_LEAVE_MENU,    execExitInfo,           "Exit"                  },
2209
2210   { 0,                  NULL,                   NULL                    }
2211 };
2212
2213 static int getMenuTextFont(int type)
2214 {
2215   if (type & (TYPE_SWITCH       |
2216               TYPE_YES_NO       |
2217               TYPE_YES_NO_AUTO  |
2218               TYPE_STRING       |
2219               TYPE_PLAYER       |
2220               TYPE_ECS_AGA      |
2221               TYPE_KEYTEXT      |
2222               TYPE_ENTER_LIST   |
2223               TYPE_TEXT_INPUT))
2224     return FONT_MENU_2;
2225   else
2226     return FONT_MENU_1;
2227 }
2228
2229 static struct TokenInfo *setup_info;
2230 static struct TokenInfo setup_info_input[];
2231
2232 static struct TokenInfo *menu_info;
2233
2234 static void DrawCursorAndText_Menu_Ext(struct TokenInfo *token_info,
2235                                        int screen_pos, int menu_info_pos_raw,
2236                                        boolean active)
2237 {
2238   int pos = (menu_info_pos_raw < 0 ? screen_pos : menu_info_pos_raw);
2239   struct TokenInfo *ti = &token_info[pos];
2240   int xpos = MENU_SCREEN_START_XPOS;
2241   int ypos = MENU_SCREEN_START_YPOS + screen_pos;
2242   int font_nr = getMenuTextFont(ti->type);
2243
2244   if (setup_mode == SETUP_MODE_INPUT)
2245     font_nr = FONT_MENU_1;
2246
2247   if (active)
2248     font_nr = FONT_ACTIVE(font_nr);
2249
2250   DrawText(mSX + xpos * 32, mSY + ypos * 32, ti->text, font_nr);
2251
2252   if (ti->type & ~TYPE_SKIP_ENTRY)
2253     drawCursor(screen_pos, active);
2254 }
2255
2256 static void DrawCursorAndText_Menu(int screen_pos, int menu_info_pos_raw,
2257                                    boolean active)
2258 {
2259   DrawCursorAndText_Menu_Ext(menu_info, screen_pos, menu_info_pos_raw, active);
2260 }
2261
2262 static void DrawCursorAndText_Setup(int screen_pos, int menu_info_pos_raw,
2263                                     boolean active)
2264 {
2265   DrawCursorAndText_Menu_Ext(setup_info, screen_pos, menu_info_pos_raw, active);
2266 }
2267
2268 static char *window_size_text;
2269 static char *scaling_type_text;
2270 static char *network_server_text;
2271
2272 static void drawSetupValue(int, int);
2273
2274 static void drawMenuInfoList(int first_entry, int num_page_entries,
2275                              int max_page_entries)
2276 {
2277   int i;
2278
2279   if (first_entry + num_page_entries > max_page_entries)
2280     first_entry = 0;
2281
2282   clearMenuListArea();
2283
2284   for (i = 0; i < num_page_entries; i++)
2285   {
2286     int menu_info_pos = first_entry + i;
2287     struct TokenInfo *si = &menu_info[menu_info_pos];
2288     void *value_ptr = si->value;
2289
2290     // set some entries to "unchangeable" according to other variables
2291     if ((value_ptr == &setup.sound_simple && !audio.sound_available) ||
2292         (value_ptr == &setup.sound_loops  && !audio.loops_available) ||
2293         (value_ptr == &setup.sound_music  && !audio.music_available) ||
2294         (value_ptr == &setup.fullscreen   && !video.fullscreen_available) ||
2295         (value_ptr == &window_size_text   && !video.window_scaling_available) ||
2296         (value_ptr == &scaling_type_text  && !video.window_scaling_available))
2297       si->type |= TYPE_GHOSTED;
2298
2299     if (si->type & (TYPE_ENTER_MENU|TYPE_ENTER_LIST))
2300       initCursor(i, IMG_MENU_BUTTON_ENTER_MENU);
2301     else if (si->type & (TYPE_LEAVE_MENU|TYPE_LEAVE_LIST))
2302       initCursor(i, IMG_MENU_BUTTON_LEAVE_MENU);
2303     else if (si->type & ~TYPE_SKIP_ENTRY)
2304       initCursor(i, IMG_MENU_BUTTON);
2305
2306     DrawCursorAndText_Menu(i, menu_info_pos, FALSE);
2307
2308     if (si->type & TYPE_STRING)
2309     {
2310       int gadget_id = -1;
2311
2312       if (value_ptr == &network_server_text)
2313         gadget_id = SCREEN_CTRL_ID_NETWORK_SERVER;
2314
2315       if (gadget_id != -1)
2316       {
2317         struct GadgetInfo *gi = screen_gadget[gadget_id];
2318         int xpos = MENU_SCREEN_START_XPOS;
2319         int ypos = MENU_SCREEN_START_YPOS + i;
2320         int x = mSX + xpos * 32;
2321         int y = mSY + ypos * 32;
2322
2323         ModifyGadget(gi, GDI_X, x, GDI_Y, y, GDI_END);
2324       }
2325     }
2326
2327     if (si->type & TYPE_VALUE &&
2328         menu_info == setup_info)
2329       drawSetupValue(i, menu_info_pos);
2330   }
2331 }
2332
2333 static void DrawInfoScreen_Main(void)
2334 {
2335   int fade_mask = REDRAW_FIELD;
2336   int i;
2337
2338   if (redraw_mask & REDRAW_ALL)
2339     fade_mask = REDRAW_ALL;
2340
2341   if (CheckFadeAll())
2342     fade_mask = REDRAW_ALL;
2343
2344   UnmapAllGadgets();
2345   FadeMenuSoundsAndMusic();
2346
2347   FreeScreenGadgets();
2348   CreateScreenGadgets();
2349
2350   // (needed after displaying title screens which disable auto repeat)
2351   KeyboardAutoRepeatOn();
2352
2353   FadeSetLeaveScreen();
2354
2355   FadeOut(fade_mask);
2356
2357   // needed if different viewport properties defined for info screen
2358   ChangeViewportPropertiesIfNeeded();
2359
2360   SetMainBackgroundImage(IMG_BACKGROUND_INFO);
2361
2362   ClearField();
2363
2364   OpenDoor(GetDoorState() | DOOR_NO_DELAY | DOOR_FORCE_REDRAW);
2365
2366   DrawTextSCentered(mSY - SY + 16, FONT_TITLE_1, "Info Screen");
2367
2368   info_info = info_info_main;
2369
2370   // determine maximal number of info entries that can be displayed on screen
2371   num_info_info = 0;
2372   for (i = 0; info_info[i].type != 0 && i < NUM_MENU_ENTRIES_ON_SCREEN; i++)
2373     num_info_info++;
2374
2375   // determine maximal number of info entries available for menu of info screen
2376   max_info_info = 0;
2377   for (i = 0; info_info[i].type != 0; i++)
2378     max_info_info++;
2379
2380   HandleInfoScreen_Main(0, 0, 0, 0, MB_MENU_INITIALIZE);
2381
2382   MapScreenGadgets(max_info_info);
2383
2384   PlayMenuSoundsAndMusic();
2385
2386   DrawMaskedBorder(fade_mask);
2387
2388   FadeIn(fade_mask);
2389 }
2390
2391 static void changeSetupValue(int, int, int);
2392
2393 static void HandleMenuScreen(int mx, int my, int dx, int dy, int button,
2394                              int mode, int num_page_entries,
2395                              int max_page_entries)
2396 {
2397   static int num_page_entries_all_last[NUM_SPECIAL_GFX_ARGS][MAX_MENU_MODES];
2398   static int choice_stores[NUM_SPECIAL_GFX_ARGS][MAX_MENU_MODES];
2399   static int first_entry_stores[NUM_SPECIAL_GFX_ARGS][MAX_MENU_MODES];
2400   int *num_page_entries_last = num_page_entries_all_last[game_status];
2401   int *choice_store = choice_stores[game_status];
2402   int *first_entry_store = first_entry_stores[game_status];
2403   int choice = choice_store[mode];              // starts with 0
2404   int first_entry = first_entry_store[mode];    // starts with 0
2405   int x = 0;
2406   int y = choice - first_entry;
2407   int y_old = y;
2408   boolean position_set_by_scrollbar = (dx == 999);
2409   int step = (button == 1 ? 1 : button == 2 ? 5 : 10);
2410   int i;
2411
2412   if (button == MB_MENU_INITIALIZE)
2413   {
2414     // check if number of menu page entries has changed (may happen by change
2415     // of custom artwork definition value for 'list_size' for this menu screen)
2416     // (in this case, the last menu position most probably has to be corrected)
2417     if (num_page_entries != num_page_entries_last[mode])
2418     {
2419       choice_store[mode] = first_entry_store[mode] = 0;
2420
2421       choice = first_entry = 0;
2422       y = y_old = 0;
2423
2424       num_page_entries_last[mode] = num_page_entries;
2425     }
2426
2427     // advance to first valid menu entry
2428     while (choice < num_page_entries &&
2429            menu_info[choice].type & TYPE_SKIP_ENTRY)
2430       choice++;
2431
2432     if (position_set_by_scrollbar)
2433       first_entry = first_entry_store[mode] = dy;
2434     else
2435       AdjustScrollbar(SCREEN_CTRL_ID_SCROLL_VERTICAL, max_page_entries,
2436                       NUM_MENU_ENTRIES_ON_SCREEN, first_entry);
2437
2438     drawMenuInfoList(first_entry, num_page_entries, max_page_entries);
2439
2440     if (choice < first_entry)
2441     {
2442       choice = first_entry;
2443
2444       if (menu_info[choice].type & TYPE_SKIP_ENTRY)
2445         choice++;
2446     }
2447     else if (choice > first_entry + num_page_entries - 1)
2448     {
2449       choice = first_entry + num_page_entries - 1;
2450
2451       if (menu_info[choice].type & TYPE_SKIP_ENTRY)
2452         choice--;
2453     }
2454
2455     choice_store[mode] = choice;
2456
2457     DrawCursorAndText_Menu(choice - first_entry, choice, TRUE);
2458
2459     return;
2460   }
2461   else if (button == MB_MENU_LEAVE)
2462   {
2463     PlaySound(SND_MENU_ITEM_SELECTING);
2464
2465     for (i = 0; i < max_page_entries; i++)
2466     {
2467       if (menu_info[i].type & TYPE_LEAVE_MENU)
2468       {
2469         void (*menu_callback_function)(void) = menu_info[i].value;
2470
2471         FadeSetLeaveMenu();
2472
2473         menu_callback_function();
2474
2475         break;  // absolutely needed because function changes 'menu_info'!
2476       }
2477     }
2478
2479     return;
2480   }
2481
2482   if (mx || my)         // mouse input
2483   {
2484     x = (mx - mSX) / 32;
2485     y = (my - mSY) / 32 - MENU_SCREEN_START_YPOS;
2486   }
2487   else if (dx || dy)    // keyboard or scrollbar/scrollbutton input
2488   {
2489     // move cursor instead of scrolling when already at start/end of list
2490     if (dy == -1 * SCROLL_LINE && first_entry == 0)
2491       dy = -1;
2492     else if (dy == +1 * SCROLL_LINE &&
2493              first_entry + num_page_entries == max_page_entries)
2494       dy = 1;
2495
2496     // handle scrolling screen one line or page
2497     if (y + dy < 0 ||
2498         y + dy > num_page_entries - 1)
2499     {
2500       boolean redraw = FALSE;
2501
2502       if (ABS(dy) == SCROLL_PAGE)
2503         step = num_page_entries - 1;
2504
2505       if (dy < 0 && first_entry > 0)
2506       {
2507         // scroll page/line up
2508
2509         first_entry -= step;
2510         if (first_entry < 0)
2511           first_entry = 0;
2512
2513         redraw = TRUE;
2514       }
2515       else if (dy > 0 && first_entry + num_page_entries < max_page_entries)
2516       {
2517         // scroll page/line down
2518
2519         first_entry += step;
2520         if (first_entry + num_page_entries > max_page_entries)
2521           first_entry = MAX(0, max_page_entries - num_page_entries);
2522
2523         redraw = TRUE;
2524       }
2525
2526       if (redraw)
2527       {
2528         choice += first_entry - first_entry_store[mode];
2529
2530         if (choice < first_entry)
2531         {
2532           choice = first_entry;
2533
2534           if (menu_info[choice].type & TYPE_SKIP_ENTRY)
2535             choice++;
2536         }
2537         else if (choice > first_entry + num_page_entries - 1)
2538         {
2539           choice = first_entry + num_page_entries - 1;
2540
2541           if (menu_info[choice].type & TYPE_SKIP_ENTRY)
2542             choice--;
2543         }
2544         else if (menu_info[choice].type & TYPE_SKIP_ENTRY)
2545         {
2546           choice += SIGN(dy);
2547
2548           if (choice < first_entry ||
2549               choice > first_entry + num_page_entries - 1)
2550           first_entry += SIGN(dy);
2551         }
2552
2553         first_entry_store[mode] = first_entry;
2554         choice_store[mode] = choice;
2555
2556         drawMenuInfoList(first_entry, num_page_entries, max_page_entries);
2557
2558         DrawCursorAndText_Menu(choice - first_entry, choice, TRUE);
2559
2560         AdjustScrollbar(SCREEN_CTRL_ID_SCROLL_VERTICAL, max_page_entries,
2561                         NUM_MENU_ENTRIES_ON_SCREEN, first_entry);
2562       }
2563
2564       return;
2565     }
2566
2567     if (dx)
2568     {
2569       int menu_navigation_type = (dx < 0 ? TYPE_LEAVE : TYPE_ENTER);
2570
2571       if (menu_info[choice].type & menu_navigation_type ||
2572           menu_info[choice].type & TYPE_BOOLEAN_STYLE ||
2573           menu_info[choice].type & TYPE_YES_NO_AUTO ||
2574           menu_info[choice].type & TYPE_PLAYER)
2575         button = MB_MENU_CHOICE;
2576     }
2577     else if (dy)
2578       y += dy;
2579
2580     // jump to next non-empty menu entry (up or down)
2581     while (first_entry + y > 0 &&
2582            first_entry + y < max_page_entries - 1 &&
2583            menu_info[first_entry + y].type & TYPE_SKIP_ENTRY)
2584       y += dy;
2585
2586     if (!IN_VIS_MENU(x, y))
2587     {
2588       choice += y - y_old;
2589
2590       if (choice < first_entry)
2591         first_entry = choice;
2592       else if (choice > first_entry + num_page_entries - 1)
2593         first_entry = choice - num_page_entries + 1;
2594
2595       if (first_entry >= 0 &&
2596           first_entry + num_page_entries <= max_page_entries)
2597       {
2598         first_entry_store[mode] = first_entry;
2599
2600         if (choice < first_entry)
2601           choice = first_entry;
2602         else if (choice > first_entry + num_page_entries - 1)
2603           choice = first_entry + num_page_entries - 1;
2604
2605         choice_store[mode] = choice;
2606
2607         drawMenuInfoList(first_entry, num_page_entries, max_page_entries);
2608
2609         DrawCursorAndText_Menu(choice - first_entry, choice, TRUE);
2610
2611         AdjustScrollbar(SCREEN_CTRL_ID_SCROLL_VERTICAL, max_page_entries,
2612                         NUM_MENU_ENTRIES_ON_SCREEN, first_entry);
2613       }
2614
2615       return;
2616     }
2617   }
2618
2619   if (!anyScrollbarGadgetActive() &&
2620       IN_VIS_MENU(x, y) &&
2621       mx < screen_gadget[SCREEN_CTRL_ID_SCROLL_VERTICAL]->x &&
2622       y >= 0 && y < num_page_entries)
2623   {
2624     if (button)
2625     {
2626       if (first_entry + y != choice &&
2627           menu_info[first_entry + y].type & ~TYPE_SKIP_ENTRY)
2628       {
2629         PlaySound(SND_MENU_ITEM_ACTIVATING);
2630
2631         DrawCursorAndText_Menu(choice - first_entry, choice, FALSE);
2632         DrawCursorAndText_Menu(y, first_entry + y, TRUE);
2633
2634         choice = choice_store[mode] = first_entry + y;
2635       }
2636       else if (dx < 0)
2637       {
2638         PlaySound(SND_MENU_ITEM_SELECTING);
2639
2640         for (i = 0; menu_info[i].type != 0; i++)
2641         {
2642           if (menu_info[i].type & TYPE_LEAVE_MENU)
2643           {
2644             void (*menu_callback_function)(void) = menu_info[i].value;
2645
2646             FadeSetLeaveMenu();
2647
2648             menu_callback_function();
2649
2650             // absolutely needed because function changes 'menu_info'!
2651             break;
2652           }
2653         }
2654
2655         return;
2656       }
2657     }
2658     else if (!(menu_info[first_entry + y].type & TYPE_GHOSTED))
2659     {
2660       PlaySound(SND_MENU_ITEM_SELECTING);
2661
2662       // when selecting key headline, execute function for key value change
2663       if (menu_info[first_entry + y].type & TYPE_KEYTEXT &&
2664           menu_info[first_entry + y + 1].type & TYPE_KEY)
2665         y++;
2666
2667       // when selecting string value, execute function for list selection
2668       if (menu_info[first_entry + y].type & TYPE_STRING && y > 0 &&
2669           menu_info[first_entry + y - 1].type & TYPE_ENTER_LIST)
2670         y--;
2671
2672       // when selecting string value, execute function for text input gadget
2673       if (menu_info[first_entry + y].type & TYPE_STRING && y > 0 &&
2674           menu_info[first_entry + y - 1].type & TYPE_TEXT_INPUT)
2675         y--;
2676
2677       if (menu_info[first_entry + y].type & TYPE_ENTER_OR_LEAVE)
2678       {
2679         void (*menu_callback_function)(void) =
2680           menu_info[first_entry + y].value;
2681
2682         FadeSetFromType(menu_info[first_entry + y].type);
2683
2684         menu_callback_function();
2685       }
2686       else if (menu_info[first_entry + y].type & TYPE_TEXT_INPUT)
2687       {
2688         void (*gadget_callback_function)(void) =
2689           menu_info[first_entry + y].value;
2690
2691         gadget_callback_function();
2692       }
2693       else if (menu_info[first_entry + y].type & TYPE_VALUE &&
2694                menu_info == setup_info)
2695       {
2696         changeSetupValue(y, first_entry + y, dx);
2697       }
2698     }
2699   }
2700 }
2701
2702 void HandleInfoScreen_Main(int mx, int my, int dx, int dy, int button)
2703 {
2704   menu_info = info_info;
2705
2706   HandleMenuScreen(mx, my, dx, dy, button,
2707                    info_mode, num_info_info, max_info_info);
2708 }
2709
2710 static int getMenuFontSpacing(int spacing_height, int font_nr)
2711 {
2712   int font_spacing = getFontHeight(font_nr) + EXTRA_SPACING(game_status);
2713
2714   return (spacing_height < 0 ? ABS(spacing_height) * font_spacing :
2715           spacing_height);
2716 }
2717
2718 static int getMenuTextSpacing(int spacing_height, int font_nr)
2719 {
2720   return (getMenuFontSpacing(spacing_height, font_nr) +
2721           EXTRA_SPACING(game_status));
2722 }
2723
2724 static int getMenuTextStep(int spacing_height, int font_nr)
2725 {
2726   return getFontHeight(font_nr) + getMenuTextSpacing(spacing_height, font_nr);
2727 }
2728
2729 void DrawInfoScreen_NotAvailable(char *text_title, char *text_error)
2730 {
2731   int font_title = MENU_INFO_FONT_TITLE;
2732   int font_error = FONT_TEXT_2;
2733   int font_foot  = MENU_INFO_FONT_FOOT;
2734   int spacing_title = menu.headline1_spacing_info[info_mode];
2735   int ystep_title = getMenuTextStep(spacing_title, font_title);
2736   int ystart1 = mSY - SY + MENU_SCREEN_INFO_YSTART1;
2737   int ystart2 = ystart1 + ystep_title;
2738   int ybottom = mSY - SY + MENU_SCREEN_INFO_YBOTTOM;
2739
2740   SetMainBackgroundImageIfDefined(IMG_BACKGROUND_INFO);
2741
2742   FadeOut(REDRAW_FIELD);
2743
2744   ClearField();
2745   DrawHeadline();
2746
2747   DrawTextSCentered(ystart1, font_title, text_title);
2748   DrawTextSCentered(ystart2, font_error, text_error);
2749
2750   DrawTextSCentered(ybottom, font_foot,
2751                     "Press any key or button for info menu");
2752
2753   FadeIn(REDRAW_FIELD);
2754 }
2755
2756 void DrawInfoScreen_HelpAnim(int start, int max_anims, boolean init)
2757 {
2758   static int infoscreen_step[MAX_INFO_ELEMENTS_ON_SCREEN];
2759   static int infoscreen_frame[MAX_INFO_ELEMENTS_ON_SCREEN];
2760   int font_title = MENU_INFO_FONT_TITLE;
2761   int font_foot  = MENU_INFO_FONT_FOOT;
2762   int xstart  = mSX + MENU_SCREEN_INFO_SPACE_LEFT;
2763   int ystart1 = mSY - SY + MENU_SCREEN_INFO_YSTART1;
2764   int ystart2 = mSY + MENU_SCREEN_INFO_YSTART2;
2765   int ybottom = mSY - SY + MENU_SCREEN_INFO_YBOTTOM;
2766   int ystep = MENU_SCREEN_INFO_YSTEP;
2767   int element, action, direction;
2768   int graphic;
2769   int delay;
2770   int sync_frame;
2771   int i, j;
2772
2773   if (init)
2774   {
2775     for (i = 0; i < NUM_INFO_ELEMENTS_ON_SCREEN; i++)
2776       infoscreen_step[i] = infoscreen_frame[i] = 0;
2777
2778     ClearField();
2779     DrawHeadline();
2780
2781     DrawTextSCentered(ystart1, font_title, "The Game Elements:");
2782
2783     DrawTextSCentered(ybottom, font_foot,
2784                       "Press any key or button for next page");
2785
2786     FrameCounter = 0;
2787   }
2788
2789   i = j = 0;
2790   while (helpanim_info[j].element != HELPANIM_LIST_END)
2791   {
2792     if (i >= start + NUM_INFO_ELEMENTS_ON_SCREEN ||
2793         i >= max_anims)
2794       break;
2795     else if (i < start)
2796     {
2797       while (helpanim_info[j].element != HELPANIM_LIST_NEXT)
2798         j++;
2799
2800       j++;
2801       i++;
2802
2803       continue;
2804     }
2805
2806     j += infoscreen_step[i - start];
2807
2808     element = helpanim_info[j].element;
2809     action = helpanim_info[j].action;
2810     direction = helpanim_info[j].direction;
2811
2812     if (element < 0)
2813       element = EL_UNKNOWN;
2814
2815     if (action != -1 && direction != -1)
2816       graphic = el_act_dir2img(element, action, direction);
2817     else if (action != -1)
2818       graphic = el_act2img(element, action);
2819     else if (direction != -1)
2820       graphic = el_dir2img(element, direction);
2821     else
2822       graphic = el2img(element);
2823
2824     delay = helpanim_info[j++].delay;
2825
2826     if (delay == -1)
2827       delay = 1000000;
2828
2829     if (infoscreen_frame[i - start] == 0)
2830     {
2831       sync_frame = 0;
2832       infoscreen_frame[i - start] = delay - 1;
2833     }
2834     else
2835     {
2836       sync_frame = delay - infoscreen_frame[i - start];
2837       infoscreen_frame[i - start]--;
2838     }
2839
2840     if (helpanim_info[j].element == HELPANIM_LIST_NEXT)
2841     {
2842       if (!infoscreen_frame[i - start])
2843         infoscreen_step[i - start] = 0;
2844     }
2845     else
2846     {
2847       if (!infoscreen_frame[i - start])
2848         infoscreen_step[i - start]++;
2849       while (helpanim_info[j].element != HELPANIM_LIST_NEXT)
2850         j++;
2851     }
2852
2853     j++;
2854
2855     ClearRectangleOnBackground(drawto, xstart, ystart2 + (i - start) * ystep,
2856                                TILEX, TILEY);
2857     DrawFixedGraphicAnimationExt(drawto, xstart, ystart2 + (i - start) * ystep,
2858                                  graphic, sync_frame, USE_MASKING);
2859
2860     if (init)
2861       DrawInfoScreen_HelpText(element, action, direction, i - start);
2862
2863     i++;
2864   }
2865
2866   redraw_mask |= REDRAW_FIELD;
2867
2868   FrameCounter++;
2869 }
2870
2871 static char *getHelpText(int element, int action, int direction)
2872 {
2873   char token[MAX_LINE_LEN];
2874
2875   strcpy(token, element_info[element].token_name);
2876
2877   if (action != -1)
2878     strcat(token, element_action_info[action].suffix);
2879
2880   if (direction != -1)
2881     strcat(token, element_direction_info[MV_DIR_TO_BIT(direction)].suffix);
2882
2883   return getHashEntry(helptext_info, token);
2884 }
2885
2886 void DrawInfoScreen_HelpText(int element, int action, int direction, int ypos)
2887 {
2888   int font_nr = FONT_INFO_ELEMENTS;
2889   int font_width = getFontWidth(font_nr);
2890   int font_height = getFontHeight(font_nr);
2891   int yoffset = (TILEX - 2 * font_height) / 2;
2892   int xstart = mSX + MENU_SCREEN_INFO_SPACE_LEFT + TILEX + MINI_TILEX;
2893   int ystart = mSY + MENU_SCREEN_INFO_YSTART2 + yoffset;
2894   int ystep = TILEY + 4;
2895   int pad_left = xstart - SX;
2896   int pad_right = MENU_SCREEN_INFO_SPACE_RIGHT;
2897   int max_chars_per_line = (SXSIZE - pad_left - pad_right) / font_width;
2898   int max_lines_per_text = 2;    
2899   char *text = NULL;
2900
2901   if (action != -1 && direction != -1)          // element.action.direction
2902     text = getHelpText(element, action, direction);
2903
2904   if (text == NULL && action != -1)             // element.action
2905     text = getHelpText(element, action, -1);
2906
2907   if (text == NULL && direction != -1)          // element.direction
2908     text = getHelpText(element, -1, direction);
2909
2910   if (text == NULL)                             // base element
2911     text = getHelpText(element, -1, -1);
2912
2913   if (text == NULL)                             // not found
2914     text = "No description available";
2915
2916   if (strlen(text) <= max_chars_per_line)       // only one line of text
2917     ystart += getFontHeight(font_nr) / 2;
2918
2919   DrawTextBuffer(xstart, ystart + ypos * ystep, text, font_nr,
2920                  max_chars_per_line, -1, max_lines_per_text, 0, -1,
2921                  TRUE, FALSE, FALSE);
2922 }
2923
2924 static void DrawInfoScreen_TitleScreen(void)
2925 {
2926   SetGameStatus(GAME_MODE_TITLE);
2927
2928   DrawTitleScreen();
2929 }
2930
2931 void HandleInfoScreen_TitleScreen(int button)
2932 {
2933   HandleTitleScreen(0, 0, 0, 0, button);
2934 }
2935
2936 static void DrawInfoScreen_Elements(void)
2937 {
2938   SetMainBackgroundImageIfDefined(IMG_BACKGROUND_INFO_ELEMENTS);
2939
2940   FadeOut(REDRAW_FIELD);
2941
2942   LoadHelpAnimInfo();
2943   LoadHelpTextInfo();
2944
2945   HandleInfoScreen_Elements(MB_MENU_INITIALIZE);
2946
2947   FadeIn(REDRAW_FIELD);
2948 }
2949
2950 void HandleInfoScreen_Elements(int button)
2951 {
2952   static unsigned int info_delay = 0;
2953   static int num_anims;
2954   static int num_pages;
2955   static int page;
2956   int anims_per_page = NUM_INFO_ELEMENTS_ON_SCREEN;
2957   int i;
2958
2959   if (button == MB_MENU_INITIALIZE)
2960   {
2961     boolean new_element = TRUE;
2962
2963     num_anims = 0;
2964
2965     for (i = 0; helpanim_info[i].element != HELPANIM_LIST_END; i++)
2966     {
2967       if (helpanim_info[i].element == HELPANIM_LIST_NEXT)
2968         new_element = TRUE;
2969       else if (new_element)
2970       {
2971         num_anims++;
2972         new_element = FALSE;
2973       }
2974     }
2975
2976     num_pages = (num_anims + anims_per_page - 1) / anims_per_page;
2977     page = 0;
2978   }
2979
2980   if (button == MB_MENU_LEAVE)
2981   {
2982     PlaySound(SND_MENU_ITEM_SELECTING);
2983
2984     info_mode = INFO_MODE_MAIN;
2985     DrawInfoScreen();
2986
2987     return;
2988   }
2989   else if (button == MB_MENU_CHOICE || button == MB_MENU_INITIALIZE)
2990   {
2991     if (button != MB_MENU_INITIALIZE)
2992     {
2993       PlaySound(SND_MENU_ITEM_SELECTING);
2994
2995       page++;
2996     }
2997
2998     if (page >= num_pages)
2999     {
3000       FadeMenuSoundsAndMusic();
3001
3002       info_mode = INFO_MODE_MAIN;
3003       DrawInfoScreen();
3004
3005       return;
3006     }
3007
3008     if (page > 0)
3009       FadeSetNextScreen();
3010
3011     if (button != MB_MENU_INITIALIZE)
3012       FadeOut(REDRAW_FIELD);
3013
3014     DrawInfoScreen_HelpAnim(page * anims_per_page, num_anims, TRUE);
3015
3016     if (button != MB_MENU_INITIALIZE)
3017       FadeIn(REDRAW_FIELD);
3018   }
3019   else
3020   {
3021     if (DelayReached(&info_delay, GameFrameDelay))
3022       if (page < num_pages)
3023         DrawInfoScreen_HelpAnim(page * anims_per_page, num_anims, FALSE);
3024
3025     PlayMenuSoundIfLoop();
3026   }
3027 }
3028
3029 static void DrawInfoScreen_Music(void)
3030 {
3031   SetMainBackgroundImageIfDefined(IMG_BACKGROUND_INFO_MUSIC);
3032
3033   FadeOut(REDRAW_FIELD);
3034
3035   ClearField();
3036   DrawHeadline();
3037
3038   LoadMusicInfo();
3039
3040   HandleInfoScreen_Music(MB_MENU_INITIALIZE);
3041
3042   FadeIn(REDRAW_FIELD);
3043 }
3044
3045 void HandleInfoScreen_Music(int button)
3046 {
3047   static struct MusicFileInfo *list = NULL;
3048   int font_title = MENU_INFO_FONT_TITLE;
3049   int font_head  = MENU_INFO_FONT_HEAD;
3050   int font_text  = MENU_INFO_FONT_TEXT;
3051   int font_foot  = MENU_INFO_FONT_FOOT;
3052   int spacing_title = menu.headline1_spacing_info[info_mode];
3053   int spacing_head  = menu.headline2_spacing_info[info_mode];
3054   int ystep_title = getMenuTextStep(spacing_title, font_title);
3055   int ystep_head  = getMenuTextStep(spacing_head,  font_head);
3056   int ystart  = mSY - SY + MENU_SCREEN_INFO_YSTART1;
3057   int ybottom = mSY - SY + MENU_SCREEN_INFO_YBOTTOM;
3058
3059   if (button == MB_MENU_INITIALIZE)
3060   {
3061     list = music_file_info;
3062
3063     if (list == NULL)
3064     {
3065       FadeMenuSoundsAndMusic();
3066
3067       ClearField();
3068       DrawHeadline();
3069
3070       DrawTextSCentered(ystart, font_title,
3071                         "No music info for this level set.");
3072
3073       DrawTextSCentered(ybottom, font_foot,
3074                         "Press any key or button for info menu");
3075
3076       return;
3077     }
3078   }
3079
3080   if (button == MB_MENU_LEAVE)
3081   {
3082     PlaySound(SND_MENU_ITEM_SELECTING);
3083
3084     FadeMenuSoundsAndMusic();
3085
3086     info_mode = INFO_MODE_MAIN;
3087     DrawInfoScreen();
3088
3089     return;
3090   }
3091   else if (button == MB_MENU_CHOICE || button == MB_MENU_INITIALIZE)
3092   {
3093     if (button != MB_MENU_INITIALIZE)
3094     {
3095       PlaySound(SND_MENU_ITEM_SELECTING);
3096
3097       if (list != NULL)
3098         list = list->next;
3099     }
3100
3101     if (list == NULL)
3102     {
3103       FadeMenuSoundsAndMusic();
3104
3105       info_mode = INFO_MODE_MAIN;
3106       DrawInfoScreen();
3107
3108       return;
3109     }
3110
3111     FadeMenuSoundsAndMusic();
3112
3113     if (list != music_file_info)
3114       FadeSetNextScreen();
3115
3116     if (button != MB_MENU_INITIALIZE)
3117       FadeOut(REDRAW_FIELD);
3118
3119     ClearField();
3120     DrawHeadline();
3121
3122     if (list->is_sound)
3123     {
3124       int sound = list->music;
3125
3126       if (sound_info[sound].loop)
3127         PlaySoundLoop(sound);
3128       else
3129         PlaySound(sound);
3130
3131       DrawTextSCentered(ystart, font_title, "The Game Background Sounds:");
3132     }
3133     else
3134     {
3135       int music = list->music;
3136
3137       if (music_info[music].loop)
3138         PlayMusicLoop(music);
3139       else
3140         PlayMusic(music);
3141
3142       DrawTextSCentered(ystart, font_title, "The Game Background Music:");
3143     }
3144
3145     ystart += ystep_title;
3146
3147     if (!strEqual(list->title, UNKNOWN_NAME))
3148     {
3149       if (!strEqual(list->title_header, UNKNOWN_NAME))
3150       {
3151         DrawTextSCentered(ystart, font_head, list->title_header);
3152         ystart += ystep_head;
3153       }
3154
3155       DrawTextFCentered(ystart, font_text, "\"%s\"", list->title);
3156       ystart += ystep_head;
3157     }
3158
3159     if (!strEqual(list->artist, UNKNOWN_NAME))
3160     {
3161       if (!strEqual(list->artist_header, UNKNOWN_NAME))
3162         DrawTextSCentered(ystart, font_head, list->artist_header);
3163       else
3164         DrawTextSCentered(ystart, font_head, "by");
3165
3166       ystart += ystep_head;
3167
3168       DrawTextFCentered(ystart, font_text, "%s", list->artist);
3169       ystart += ystep_head;
3170     }
3171
3172     if (!strEqual(list->album, UNKNOWN_NAME))
3173     {
3174       if (!strEqual(list->album_header, UNKNOWN_NAME))
3175         DrawTextSCentered(ystart, font_head, list->album_header);
3176       else
3177         DrawTextSCentered(ystart, font_head, "from the album");
3178
3179       ystart += ystep_head;
3180
3181       DrawTextFCentered(ystart, font_text, "\"%s\"", list->album);
3182       ystart += ystep_head;
3183     }
3184
3185     if (!strEqual(list->year, UNKNOWN_NAME))
3186     {
3187       if (!strEqual(list->year_header, UNKNOWN_NAME))
3188         DrawTextSCentered(ystart, font_head, list->year_header);
3189       else
3190         DrawTextSCentered(ystart, font_head, "from the year");
3191
3192       ystart += ystep_head;
3193
3194       DrawTextFCentered(ystart, font_text, "%s", list->year);
3195       ystart += ystep_head;
3196     }
3197
3198     DrawTextSCentered(ybottom, FONT_TEXT_4,
3199                       "Press any key or button for next page");
3200
3201     if (button != MB_MENU_INITIALIZE)
3202       FadeIn(REDRAW_FIELD);
3203   }
3204
3205   if (list != NULL && list->is_sound && sound_info[list->music].loop)
3206     PlaySoundLoop(list->music);
3207 }
3208
3209 static void DrawInfoScreen_CreditsScreen(int screen_nr)
3210 {
3211   int font_title = MENU_INFO_FONT_TITLE;
3212   int font_head  = MENU_INFO_FONT_HEAD;
3213   int font_text  = MENU_INFO_FONT_TEXT;
3214   int font_foot  = MENU_INFO_FONT_FOOT;
3215   int spacing_title = menu.headline1_spacing_info[info_mode];
3216   int spacing_head  = menu.headline2_spacing_info[info_mode];
3217   int spacing_para  = menu.paragraph_spacing_info[info_mode];
3218   int spacing_line  = menu.line_spacing_info[info_mode];
3219   int ystep_title = getMenuTextStep(spacing_title, font_title);
3220   int ystep_head  = getMenuTextStep(spacing_head,  font_head);
3221   int ystep_para  = getMenuTextStep(spacing_para,  font_text);
3222   int ystep_line  = getMenuTextStep(spacing_line,  font_text);
3223   int ystart  = mSY - SY + MENU_SCREEN_INFO_YSTART1;
3224   int ybottom = mSY - SY + MENU_SCREEN_INFO_YBOTTOM;
3225
3226   ClearField();
3227   DrawHeadline();
3228
3229   DrawTextSCentered(ystart, font_title, "Credits:");
3230   ystart += ystep_title;
3231
3232   if (screen_nr == 0)
3233   {
3234     DrawTextSCentered(ystart, font_head,
3235                       "Special thanks to");
3236     ystart += ystep_head;
3237     DrawTextSCentered(ystart, font_text,
3238                       "Peter Liepa");
3239     ystart += ystep_head;
3240     DrawTextSCentered(ystart, font_head,
3241                       "for creating");
3242     ystart += ystep_head;
3243     DrawTextSCentered(ystart, font_text,
3244                       "\"Boulder Dash\"");
3245     ystart += ystep_head;
3246     DrawTextSCentered(ystart, font_head,
3247                       "in the year");
3248     ystart += ystep_head;
3249     DrawTextSCentered(ystart, font_text,
3250                       "1984");
3251     ystart += ystep_head;
3252     DrawTextSCentered(ystart, font_head,
3253                       "published by");
3254     ystart += ystep_head;
3255     DrawTextSCentered(ystart, font_text,
3256                       "First Star Software");
3257   }
3258   else if (screen_nr == 1)
3259   {
3260     DrawTextSCentered(ystart, font_head,
3261                       "Special thanks to");
3262     ystart += ystep_head;
3263     DrawTextSCentered(ystart, font_text,
3264                       "Klaus Heinz & Volker Wertich");
3265     ystart += ystep_head;
3266     DrawTextSCentered(ystart, font_head,
3267                       "for creating");
3268     ystart += ystep_head;
3269     DrawTextSCentered(ystart, font_text,
3270                       "\"Emerald Mine\"");
3271     ystart += ystep_head;
3272     DrawTextSCentered(ystart, font_head,
3273                       "in the year");
3274     ystart += ystep_head;
3275     DrawTextSCentered(ystart, font_text,
3276                       "1987");
3277     ystart += ystep_head;
3278     DrawTextSCentered(ystart, font_head,
3279                       "published by");
3280     ystart += ystep_head;
3281     DrawTextSCentered(ystart, font_text,
3282                       "Kingsoft");
3283   }
3284   else if (screen_nr == 2)
3285   {
3286     DrawTextSCentered(ystart, font_head,
3287                       "Special thanks to");
3288     ystart += ystep_head;
3289     DrawTextSCentered(ystart, font_text,
3290                       "Michael Stopp & Philip Jespersen");
3291     ystart += ystep_head;
3292     DrawTextSCentered(ystart, font_head,
3293                       "for creating");
3294     ystart += ystep_head;
3295     DrawTextSCentered(ystart, font_text,
3296                       "\"Supaplex\"");
3297     ystart += ystep_head;
3298     DrawTextSCentered(ystart, font_head,
3299                       "in the year");
3300     ystart += ystep_head;
3301     DrawTextSCentered(ystart, font_text,
3302                       "1991");
3303     ystart += ystep_head;
3304     DrawTextSCentered(ystart, font_head,
3305                       "published by");
3306     ystart += ystep_head;
3307     DrawTextSCentered(ystart, font_text,
3308                       "Digital Integration");
3309   }
3310   else if (screen_nr == 3)
3311   {
3312     DrawTextSCentered(ystart, font_head,
3313                       "Special thanks to");
3314     ystart += ystep_head;
3315     DrawTextSCentered(ystart, font_text,
3316                       "Hiroyuki Imabayashi");
3317     ystart += ystep_head;
3318     DrawTextSCentered(ystart, font_head,
3319                       "for creating");
3320     ystart += ystep_head;
3321     DrawTextSCentered(ystart, font_text,
3322                       "\"Sokoban\"");
3323     ystart += ystep_head;
3324     DrawTextSCentered(ystart, font_head,
3325                       "in the year");
3326     ystart += ystep_head;
3327     DrawTextSCentered(ystart, font_text,
3328                       "1982");
3329     ystart += ystep_head;
3330     DrawTextSCentered(ystart, font_head,
3331                       "published by");
3332     ystart += ystep_head;
3333     DrawTextSCentered(ystart, font_text,
3334                       "Thinking Rabbit");
3335   }
3336   else if (screen_nr == 4)
3337   {
3338     DrawTextSCentered(ystart, font_head,
3339                       "Special thanks to");
3340     ystart += ystep_head;
3341     DrawTextSCentered(ystart, font_text,
3342                       "Alan Bond");
3343     ystart += ystep_head;
3344     DrawTextSCentered(ystart, font_head,
3345                       "and");
3346     ystart += ystep_head;
3347     DrawTextSCentered(ystart, font_text,
3348                       "J\xfcrgen Bonhagen");
3349     ystart += ystep_head;
3350     DrawTextSCentered(ystart, font_head,
3351                       "for the continuous creation");
3352     ystart += ystep_line;
3353     DrawTextSCentered(ystart, font_head,
3354                       "of outstanding level sets");
3355   }
3356   else if (screen_nr == 5)
3357   {
3358     DrawTextSCentered(ystart, font_head,
3359                       "Thanks to");
3360     ystart += ystep_head;
3361     DrawTextSCentered(ystart, font_text,
3362                       "Peter Elzner");
3363     ystart += ystep_head;
3364     DrawTextSCentered(ystart, font_head,
3365                       "for ideas and inspiration by");
3366     ystart += ystep_head;
3367     DrawTextSCentered(ystart, font_text,
3368                       "Diamond Caves");
3369     ystart += ystep_para;
3370
3371     DrawTextSCentered(ystart, font_head,
3372                       "Thanks to");
3373     ystart += ystep_head;
3374     DrawTextSCentered(ystart, font_text,
3375                       "Steffest");
3376     ystart += ystep_head;
3377     DrawTextSCentered(ystart, font_head,
3378                       "for ideas and inspiration by");
3379     ystart += ystep_head;
3380     DrawTextSCentered(ystart, font_text,
3381                       "DX-Boulderdash");
3382   }
3383   else if (screen_nr == 6)
3384   {
3385     DrawTextSCentered(ystart, font_head,
3386                       "Thanks to");
3387     ystart += ystep_head;
3388     DrawTextSCentered(ystart, font_text,
3389                       "David Tritscher");
3390     ystart += ystep_head;
3391     DrawTextSCentered(ystart, font_head,
3392                       "for the code base used for the");
3393     ystart += ystep_line;
3394     DrawTextSCentered(ystart, font_head,
3395                       "native Emerald Mine engine");
3396   }
3397   else if (screen_nr == 7)
3398   {
3399     DrawTextSCentered(ystart, font_head,
3400                       "Thanks to");
3401     ystart += ystep_head;
3402     DrawTextSCentered(ystart, font_text,
3403                       "Guido Schulz");
3404     ystart += ystep_head;
3405     DrawTextSCentered(ystart, font_head,
3406                       "for the initial DOS port");
3407     ystart += ystep_para;
3408
3409     DrawTextSCentered(ystart, font_head,
3410                       "Thanks to");
3411     ystart += ystep_head;
3412     DrawTextSCentered(ystart, font_text,
3413                       "Karl H\xf6rnell");
3414     ystart += ystep_head;
3415     DrawTextSCentered(ystart, font_head,
3416                       "for some additional toons");
3417   }
3418   else if (screen_nr == 8)
3419   {
3420     DrawTextSCentered(ystart, font_head,
3421                       "And not to forget:");
3422     ystart += ystep_head;
3423     DrawTextSCentered(ystart, font_head,
3424                       "Many thanks to");
3425     ystart += ystep_head;
3426     DrawTextSCentered(ystart, font_text,
3427                       "All those who contributed");
3428     ystart += ystep_line;
3429     DrawTextSCentered(ystart, font_text,
3430                       "levels to this game");
3431     ystart += ystep_line;
3432     DrawTextSCentered(ystart, font_text,
3433                       "since 1995");
3434   }
3435
3436   DrawTextSCentered(ybottom, font_foot,
3437                     "Press any key or button for next page");
3438 }
3439
3440 static void DrawInfoScreen_Credits(void)
3441 {
3442   SetMainBackgroundImageIfDefined(IMG_BACKGROUND_INFO_CREDITS);
3443
3444   FadeMenuSoundsAndMusic();
3445
3446   FadeOut(REDRAW_FIELD);
3447
3448   HandleInfoScreen_Credits(MB_MENU_INITIALIZE);
3449
3450   FadeIn(REDRAW_FIELD);
3451 }
3452
3453 void HandleInfoScreen_Credits(int button)
3454 {
3455   static int screen_nr = 0;
3456   int num_screens = 9;
3457
3458   if (button == MB_MENU_INITIALIZE)
3459   {
3460     screen_nr = 0;
3461
3462     // DrawInfoScreen_CreditsScreen(screen_nr);
3463   }
3464
3465   if (button == MB_MENU_LEAVE)
3466   {
3467     PlaySound(SND_MENU_ITEM_SELECTING);
3468
3469     info_mode = INFO_MODE_MAIN;
3470     DrawInfoScreen();
3471
3472     return;
3473   }
3474   else if (button == MB_MENU_CHOICE || button == MB_MENU_INITIALIZE)
3475   {
3476     if (button != MB_MENU_INITIALIZE)
3477     {
3478       PlaySound(SND_MENU_ITEM_SELECTING);
3479
3480       screen_nr++;
3481     }
3482
3483     if (screen_nr >= num_screens)
3484     {
3485       FadeMenuSoundsAndMusic();
3486
3487       info_mode = INFO_MODE_MAIN;
3488       DrawInfoScreen();
3489
3490       return;
3491     }
3492
3493     if (screen_nr > 0)
3494       FadeSetNextScreen();
3495
3496     if (button != MB_MENU_INITIALIZE)
3497       FadeOut(REDRAW_FIELD);
3498
3499     DrawInfoScreen_CreditsScreen(screen_nr);
3500
3501     if (button != MB_MENU_INITIALIZE)
3502       FadeIn(REDRAW_FIELD);
3503   }
3504   else
3505   {
3506     PlayMenuSoundIfLoop();
3507   }
3508 }
3509
3510 static void DrawInfoScreen_Program(void)
3511 {
3512   int font_title = MENU_INFO_FONT_TITLE;
3513   int font_head  = MENU_INFO_FONT_HEAD;
3514   int font_text  = MENU_INFO_FONT_TEXT;
3515   int font_foot  = MENU_INFO_FONT_FOOT;
3516   int spacing_title = menu.headline1_spacing_info[info_mode];
3517   int spacing_head  = menu.headline2_spacing_info[info_mode];
3518   int spacing_para  = menu.paragraph_spacing_info[info_mode];
3519   int spacing_line  = menu.line_spacing_info[info_mode];
3520   int ystep_title = getMenuTextStep(spacing_title, font_title);
3521   int ystep_head  = getMenuTextStep(spacing_head,  font_head);
3522   int ystep_para  = getMenuTextStep(spacing_para,  font_text);
3523   int ystep_line  = getMenuTextStep(spacing_line,  font_text);
3524   int ystart  = mSY - SY + MENU_SCREEN_INFO_YSTART1;
3525   int ybottom = mSY - SY + MENU_SCREEN_INFO_YBOTTOM;
3526
3527   SetMainBackgroundImageIfDefined(IMG_BACKGROUND_INFO_PROGRAM);
3528
3529   FadeOut(REDRAW_FIELD);
3530
3531   ClearField();
3532   DrawHeadline();
3533
3534   DrawTextSCentered(ystart, font_title, "Program Information:");
3535   ystart += ystep_title;
3536
3537   DrawTextSCentered(ystart, font_head,
3538                     "This game is Freeware!");
3539   ystart += ystep_head;
3540   DrawTextSCentered(ystart, font_head,
3541                     "If you like it, send e-mail to:");
3542   ystart += ystep_head;
3543   DrawTextSCentered(ystart, font_text,
3544                     setup.internal.program_email);
3545   ystart += ystep_para;
3546
3547   DrawTextSCentered(ystart, font_head,
3548                     "More information and levels:");
3549   ystart += ystep_head;
3550   DrawTextSCentered(ystart, font_text,
3551                     setup.internal.program_website);
3552   ystart += ystep_para;
3553
3554   DrawTextSCentered(ystart, font_head,
3555                     "If you have created new levels,");
3556   ystart += ystep_line;
3557   DrawTextSCentered(ystart, font_head,
3558                     "send them to me to include them!");
3559   ystart += ystep_head;
3560   DrawTextSCentered(ystart, font_head,
3561                     ":-)");
3562
3563   DrawTextSCentered(ybottom, font_foot,
3564                     "Press any key or button for info menu");
3565
3566   FadeIn(REDRAW_FIELD);
3567 }
3568
3569 void HandleInfoScreen_Program(int button)
3570 {
3571   if (button == MB_MENU_LEAVE)
3572   {
3573     PlaySound(SND_MENU_ITEM_SELECTING);
3574
3575     info_mode = INFO_MODE_MAIN;
3576     DrawInfoScreen();
3577
3578     return;
3579   }
3580   else if (button == MB_MENU_CHOICE)
3581   {
3582     PlaySound(SND_MENU_ITEM_SELECTING);
3583
3584     FadeMenuSoundsAndMusic();
3585
3586     info_mode = INFO_MODE_MAIN;
3587     DrawInfoScreen();
3588   }
3589   else
3590   {
3591     PlayMenuSoundIfLoop();
3592   }
3593 }
3594
3595 static void DrawInfoScreen_Version(void)
3596 {
3597   int font_title = MENU_INFO_FONT_TITLE;
3598   int font_head  = MENU_INFO_FONT_HEAD;
3599   int font_text  = MENU_INFO_FONT_TEXT;
3600   int font_foot  = MENU_INFO_FONT_FOOT;
3601   int spacing_title = menu.headline1_spacing_info[info_mode];
3602   int spacing_head  = menu.headline2_spacing_info[info_mode];
3603   int spacing_para  = menu.paragraph_spacing_info[info_mode];
3604   int spacing_line  = menu.line_spacing_info[info_mode];
3605   int xstep = getFontWidth(font_text);
3606   int ystep_title = getMenuTextStep(spacing_title, font_title);
3607   int ystep_head  = getMenuTextStep(spacing_head,  font_head);
3608   int ystep_para  = getMenuTextStep(spacing_para,  font_text);
3609   int ystep_line  = getMenuTextStep(spacing_line,  font_text);
3610   int ystart  = mSY - SY + MENU_SCREEN_INFO_YSTART1;
3611   int ybottom = mSY - SY + MENU_SCREEN_INFO_YBOTTOM;
3612   int xstart1 = mSX - SX + 2 * xstep;
3613   int xstart2 = mSX - SX + 18 * xstep;
3614   int xstart3 = mSX - SX + 28 * xstep;
3615   SDL_version sdl_version_compiled;
3616   const SDL_version *sdl_version_linked;
3617   int driver_name_len = 10;
3618   SDL_version sdl_version_linked_ext;
3619   const char *driver_name = NULL;
3620
3621   SetMainBackgroundImageIfDefined(IMG_BACKGROUND_INFO_VERSION);
3622
3623   FadeOut(REDRAW_FIELD);
3624
3625   ClearField();
3626   DrawHeadline();
3627
3628   DrawTextSCentered(ystart, font_title, "Version Information:");
3629   ystart += ystep_title;
3630
3631   DrawTextF(xstart1, ystart, font_head, "Name");
3632   DrawTextF(xstart2, ystart, font_text, getProgramTitleString());
3633   ystart += ystep_line;
3634
3635   if (!strEqual(getProgramVersionString(), getProgramRealVersionString()))
3636   {
3637     DrawTextF(xstart1, ystart, font_head, "Version (fake)");
3638     DrawTextF(xstart2, ystart, font_text, getProgramVersionString());
3639     ystart += ystep_line;
3640
3641     DrawTextF(xstart1, ystart, font_head, "Version (real)");
3642     DrawTextF(xstart2, ystart, font_text, getProgramRealVersionString());
3643     ystart += ystep_line;
3644   }
3645   else
3646   {
3647     DrawTextF(xstart1, ystart, font_head, "Version");
3648     DrawTextF(xstart2, ystart, font_text, getProgramVersionString());
3649     ystart += ystep_line;
3650   }
3651
3652   DrawTextF(xstart1, ystart, font_head, "Platform");
3653   DrawTextF(xstart2, ystart, font_text, PLATFORM_STRING);
3654   ystart += ystep_line;
3655
3656   DrawTextF(xstart1, ystart, font_head, "Target");
3657   DrawTextF(xstart2, ystart, font_text, TARGET_STRING);
3658   ystart += ystep_line;
3659
3660   DrawTextF(xstart1, ystart, font_head, "Source date");
3661   DrawTextF(xstart2, ystart, font_text, getSourceDateString());
3662   ystart += ystep_para;
3663
3664   DrawTextF(xstart1, ystart, font_head, "Library");
3665   DrawTextF(xstart2, ystart, font_head, "compiled");
3666   DrawTextF(xstart3, ystart, font_head, "linked");
3667   ystart += ystep_head;
3668
3669   SDL_VERSION(&sdl_version_compiled);
3670   SDL_GetVersion(&sdl_version_linked_ext);
3671   sdl_version_linked = &sdl_version_linked_ext;
3672
3673   DrawTextF(xstart1, ystart, font_text, "SDL");
3674   DrawTextF(xstart2, ystart, font_text, "%d.%d.%d",
3675             sdl_version_compiled.major,
3676             sdl_version_compiled.minor,
3677             sdl_version_compiled.patch);
3678   DrawTextF(xstart3, ystart, font_text, "%d.%d.%d",
3679             sdl_version_linked->major,
3680             sdl_version_linked->minor,
3681             sdl_version_linked->patch);
3682   ystart += ystep_line;
3683
3684   SDL_IMAGE_VERSION(&sdl_version_compiled);
3685   sdl_version_linked = IMG_Linked_Version();
3686
3687   DrawTextF(xstart1, ystart, font_text, "SDL_image");
3688   DrawTextF(xstart2, ystart, font_text, "%d.%d.%d",
3689             sdl_version_compiled.major,
3690             sdl_version_compiled.minor,
3691             sdl_version_compiled.patch);
3692   DrawTextF(xstart3, ystart, font_text, "%d.%d.%d",
3693             sdl_version_linked->major,
3694             sdl_version_linked->minor,
3695             sdl_version_linked->patch);
3696   ystart += ystep_line;
3697
3698   SDL_MIXER_VERSION(&sdl_version_compiled);
3699   sdl_version_linked = Mix_Linked_Version();
3700
3701   DrawTextF(xstart1, ystart, font_text, "SDL_mixer");
3702   DrawTextF(xstart2, ystart, font_text, "%d.%d.%d",
3703             sdl_version_compiled.major,
3704             sdl_version_compiled.minor,
3705             sdl_version_compiled.patch);
3706   DrawTextF(xstart3, ystart, font_text, "%d.%d.%d",
3707             sdl_version_linked->major,
3708             sdl_version_linked->minor,
3709             sdl_version_linked->patch);
3710   ystart += ystep_line;
3711
3712   SDL_NET_VERSION(&sdl_version_compiled);
3713   sdl_version_linked = SDLNet_Linked_Version();
3714
3715   DrawTextF(xstart1, ystart, font_text, "SDL_net");
3716   DrawTextF(xstart2, ystart, font_text, "%d.%d.%d",
3717             sdl_version_compiled.major,
3718             sdl_version_compiled.minor,
3719             sdl_version_compiled.patch);
3720   DrawTextF(xstart3, ystart, font_text, "%d.%d.%d",
3721             sdl_version_linked->major,
3722             sdl_version_linked->minor,
3723             sdl_version_linked->patch);
3724   ystart += ystep_para;
3725
3726   DrawTextF(xstart1, ystart, font_head, "Driver");
3727   DrawTextF(xstart2, ystart, font_head, "Requested");
3728   DrawTextF(xstart3, ystart, font_head, "Used");
3729   ystart += ystep_head;
3730
3731   driver_name = getStringCopyNStatic(SDL_GetVideoDriver(0), driver_name_len);
3732
3733   DrawTextF(xstart1, ystart, font_text, "SDL_VideoDriver");
3734   DrawTextF(xstart2, ystart, font_text, "%s", setup.system.sdl_videodriver);
3735   DrawTextF(xstart3, ystart, font_text, "%s", driver_name);
3736   ystart += ystep_line;
3737
3738   driver_name = getStringCopyNStatic(SDL_GetAudioDriver(0), driver_name_len);
3739
3740   DrawTextF(xstart1, ystart, font_text, "SDL_AudioDriver");
3741   DrawTextF(xstart2, ystart, font_text, "%s", setup.system.sdl_audiodriver);
3742   DrawTextF(xstart3, ystart, font_text, "%s", driver_name);
3743
3744   DrawTextSCentered(ybottom, font_foot,
3745                     "Press any key or button for info menu");
3746