rnd-20001205-3-src
[rocksndiamonds.git] / src / files.c
index f1b581fe2ad9ddabaccbccfaba0ebe6d2579dfdf..884571eb3b4915e770bd52cbba1152ec490976cd 100644 (file)
@@ -1,24 +1,24 @@
 /***********************************************************
-*  Rocks'n'Diamonds -- McDuffin Strikes Back!              *
+* Rocks'n'Diamonds -- McDuffin Strikes Back!               *
 *----------------------------------------------------------*
-*  (c) 1995-98 Artsoft Entertainment                       *
-*              Holger Schemel                              *
-*              Oststrasse 11a                              *
-*              33604 Bielefeld                             *
-*              phone: ++49 +521 290471                     *
-*              email: aeglos@valinor.owl.de                *
+* (c) 1995-2000 Artsoft Entertainment                      *
+*               Holger Schemel                             *
+*               Detmolder Strasse 189                      *
+*               33604 Bielefeld                            *
+*               Germany                                    *
+*               e-mail: info@artsoft.org                   *
 *----------------------------------------------------------*
-*  files.h                                                 *
+* files.c                                                  *
 ***********************************************************/
 
 #include <ctype.h>
 #include <dirent.h>
 #include <sys/stat.h>
-#include <unistd.h>
+
+#include "libgame/libgame.h"
 
 #include "files.h"
 #include "tools.h"
-#include "misc.h"
 #include "tape.h"
 #include "joystick.h"
 
@@ -46,8 +46,7 @@
 #define TAPE_COOKIE_10         "ROCKSNDIAMONDS_LEVELREC_FILE_VERSION_1.0"
 
 /* file names and filename extensions */
-#ifndef MSDOS
-#define USERDATA_DIRECTORY     ".rocksndiamonds"
+#if !defined(PLATFORM_MSDOS)
 #define LEVELSETUP_DIRECTORY   "levelsetup"
 #define SETUP_FILENAME         "setup.conf"
 #define LEVELSETUP_FILENAME    "levelsetup.conf"
@@ -56,7 +55,6 @@
 #define TAPEFILE_EXTENSION     "tape"
 #define SCOREFILE_EXTENSION    "score"
 #else
-#define USERDATA_DIRECTORY     "userdata"
 #define LEVELSETUP_DIRECTORY   "lvlsetup"
 #define SETUP_FILENAME         "setup.cnf"
 #define LEVELSETUP_FILENAME    "lvlsetup.cnf"
 #define LEVELFILE_EXTENSION    "lvl"
 #define TAPEFILE_EXTENSION     "tap"
 #define SCOREFILE_EXTENSION    "sco"
-#define ERROR_FILENAME         "error.out"
 #endif
 
+#if defined(PLATFORM_WIN32)
+#ifndef S_IRGRP
+#define S_IRGRP S_IRUSR
+#endif
+#ifndef S_IROTH
+#define S_IROTH S_IRUSR
+#endif
+#ifndef S_IWGRP
+#define S_IWGRP S_IWUSR
+#endif
+#ifndef S_IWOTH
+#define S_IWOTH S_IWUSR
+#endif
+#ifndef S_IXGRP
+#define S_IXGRP S_IXUSR
+#endif
+#ifndef S_IXOTH
+#define S_IXOTH S_IXUSR
+#endif
+#endif /* PLATFORM_WIN32 */
+
 /* file permissions for newly written files */
 #define MODE_R_ALL             (S_IRUSR | S_IRGRP | S_IROTH)
 #define MODE_W_ALL             (S_IWUSR | S_IWGRP | S_IWOTH)
 #define MODE_X_ALL             (S_IXUSR | S_IXGRP | S_IXOTH)
-#define USERDATA_DIR_MODE      (MODE_R_ALL | MODE_X_ALL | S_IWUSR)
 #define LEVEL_PERMS            (MODE_R_ALL | MODE_W_ALL)
 #define SCORE_PERMS            LEVEL_PERMS
 #define TAPE_PERMS             LEVEL_PERMS
@@ -187,21 +204,6 @@ char *getLevelClassDescription(struct LevelDirInfo *ldi)
 static void SaveUserLevelInfo();               /* for 'InitUserLevelDir()' */
 static char *getSetupLine(char *, int);                /* for 'SaveUserLevelInfo()' */
 
-char *getUserDataDir()
-{
-  static char *userdata_dir = NULL;
-
-  if (!userdata_dir)
-  {
-    char *home_dir = getHomeDir();
-    char *data_dir = USERDATA_DIRECTORY;
-
-    userdata_dir = getPath2(home_dir, data_dir);
-  }
-
-  return userdata_dir;
-}
-
 static char *getSetupDir()
 {
   return getUserDataDir();
@@ -284,10 +286,10 @@ static char *getLevelFilename(int nr)
     free(filename);
 
   sprintf(basename, "%03d.%s", nr, LEVELFILE_EXTENSION);
-  filename = getPath3((leveldir[leveldir_nr].user_defined ?
+  filename = getPath3((leveldir_current->user_defined ?
                       getUserLevelDir("") :
                       options.level_directory),
-                     leveldir[leveldir_nr].filename,
+                     leveldir_current->fullpath,
                      basename);
 
   return filename;
@@ -302,7 +304,7 @@ static char *getTapeFilename(int nr)
     free(filename);
 
   sprintf(basename, "%03d.%s", nr, TAPEFILE_EXTENSION);
-  filename = getPath2(getTapeDir(leveldir[leveldir_nr].filename), basename);
+  filename = getPath2(getTapeDir(leveldir_current->filename), basename);
 
   return filename;
 }
@@ -316,23 +318,11 @@ static char *getScoreFilename(int nr)
     free(filename);
 
   sprintf(basename, "%03d.%s", nr, SCOREFILE_EXTENSION);
-  filename = getPath2(getScoreDir(leveldir[leveldir_nr].filename), basename);
+  filename = getPath2(getScoreDir(leveldir_current->filename), basename);
 
   return filename;
 }
 
-static void createDirectory(char *dir, char *text)
-{
-  if (access(dir, F_OK) != 0)
-    if (mkdir(dir, USERDATA_DIR_MODE) != 0)
-      Error(ERR_WARN, "cannot create %s directory '%s'", text, dir);
-}
-
-static void InitUserDataDirectory()
-{
-  createDirectory(getUserDataDir(), "user data");
-}
-
 static void InitTapeDirectory(char *level_subdir)
 {
   createDirectory(getUserDataDir(), "user data");
@@ -411,36 +401,47 @@ static void setLevelInfoToDefaults()
   BorderElement = EL_BETON;
 
   /* try to determine better author name than 'anonymous' */
-  if (strcmp(leveldir[leveldir_nr].author, ANONYMOUS_NAME) != 0)
+  if (strcmp(leveldir_current->author, ANONYMOUS_NAME) != 0)
   {
-    strncpy(level.author, leveldir[leveldir_nr].author, MAX_LEVEL_AUTHOR_LEN);
+    strncpy(level.author, leveldir_current->author, MAX_LEVEL_AUTHOR_LEN);
     level.author[MAX_LEVEL_AUTHOR_LEN] = '\0';
   }
   else
   {
-    switch (LEVELCLASS(&leveldir[leveldir_nr]))
+    switch (LEVELCLASS(leveldir_current))
     {
       case LEVELCLASS_TUTORIAL:
-       strcpy(level.author, PROGRAM_AUTHOR_STRING);
-       break;
+       strcpy(level.author, PROGRAM_AUTHOR_STRING);
+       break;
 
       case LEVELCLASS_CONTRIBUTION:
-       strncpy(level.author, leveldir[leveldir_nr].name,MAX_LEVEL_AUTHOR_LEN);
-       level.author[MAX_LEVEL_AUTHOR_LEN] = '\0';
-       break;
+       strncpy(level.author, leveldir_current->name,MAX_LEVEL_AUTHOR_LEN);
+       level.author[MAX_LEVEL_AUTHOR_LEN] = '\0';
+       break;
 
       case LEVELCLASS_USER:
-       strncpy(level.author, getRealName(), MAX_LEVEL_AUTHOR_LEN);
-       level.author[MAX_LEVEL_AUTHOR_LEN] = '\0';
-       break;
+       strncpy(level.author, getRealName(), MAX_LEVEL_AUTHOR_LEN);
+       level.author[MAX_LEVEL_AUTHOR_LEN] = '\0';
+       break;
 
       default:
-       /* keep default value */
-       break;
+       /* keep default value */
+       break;
     }
   }
 }
 
+static int checkLevelElement(int element)
+{
+  if (element >= EL_FIRST_RUNTIME_EL)
+  {
+    Error(ERR_WARN, "invalid level element %d", element);
+    element = EL_CHAR_FRAGE;
+  }
+
+  return element;
+}
+
 void LoadLevel(int level_nr)
 {
   int i, x, y;
@@ -510,7 +511,7 @@ void LoadLevel(int level_nr)
       for(x=0; x<3; x++)
       {
        if (i < STD_ELEMENT_CONTENTS)
-         level.yam_content[i][x][y] = fgetc(file);
+         level.yam_content[i][x][y] = checkLevelElement(fgetc(file));
        else
          level.yam_content[i][x][y] = EL_LEERRAUM;
       }
@@ -520,7 +521,7 @@ void LoadLevel(int level_nr)
   level.amoeba_speed   = fgetc(file);
   level.time_magic_wall        = fgetc(file);
   level.time_wheel     = fgetc(file);
-  level.amoeba_content = fgetc(file);
+  level.amoeba_content = checkLevelElement(fgetc(file));
   level.double_speed   = (fgetc(file) == 1 ? TRUE : FALSE);
   level.gravity                = (fgetc(file) == 1 ? TRUE : FALSE);
 
@@ -566,9 +567,10 @@ void LoadLevel(int level_nr)
        for(y=0; y<3; y++)
          for(x=0; x<3; x++)
            level.yam_content[i][x][y] =
-             (encoding_16bit ?
-              getFile16BitInteger(file, BYTE_ORDER_BIG_ENDIAN) :
-              fgetc(file));
+             checkLevelElement(encoding_16bit ?
+                               getFile16BitInteger(file,
+                                                   BYTE_ORDER_BIG_ENDIAN) :
+                               fgetc(file));
 
       getFileChunk(file, chunk, &chunk_length, BYTE_ORDER_BIG_ENDIAN);
     }
@@ -591,15 +593,15 @@ void LoadLevel(int level_nr)
   for(y=0; y<lev_fieldy; y++)
     for(x=0; x<lev_fieldx; x++)
       Feld[x][y] = Ur[x][y] =
-       (encoding_16bit ?
-        getFile16BitInteger(file, BYTE_ORDER_BIG_ENDIAN) :
-        fgetc(file));
+       checkLevelElement(encoding_16bit ?
+                         getFile16BitInteger(file, BYTE_ORDER_BIG_ENDIAN) :
+                         fgetc(file));
 
   fclose(file);
 
   /* player was faster than monsters in pre-1.0 levels */
   if (file_version == FILE_VERSION_1_0 &&
-      IS_LEVELCLASS_CONTRIBUTION(&leveldir[leveldir_nr]))
+      IS_LEVELCLASS_CONTRIBUTION(leveldir_current))
   {
     Error(ERR_WARN, "level file '%s' has version number 1.0", filename);
     Error(ERR_WARN, "using high speed movement for player");
@@ -868,7 +870,7 @@ void SaveTape(int level_nr)
   byte store_participating_players;
   int num_participating_players;
 
-  InitTapeDirectory(leveldir[leveldir_nr].filename);
+  InitTapeDirectory(leveldir_current->filename);
 
   /* if a tape still exists, ask to overwrite it */
   if (access(filename, F_OK) == 0)
@@ -993,7 +995,7 @@ void SaveScore(int level_nr)
   char *filename = getScoreFilename(level_nr);
   FILE *file;
 
-  InitScoreDirectory(leveldir[leveldir_nr].filename);
+  InitScoreDirectory(leveldir_current->filename);
 
   if (!(file = fopen(filename, "w")))
   {
@@ -1039,38 +1041,40 @@ void SaveScore(int level_nr)
 #define SETUP_TOKEN_TEAM_MODE          10
 #define SETUP_TOKEN_HANDICAP           11
 #define SETUP_TOKEN_TIME_LIMIT         12
+#define SETUP_TOKEN_FULLSCREEN         13
 
 /* player setup */
-#define SETUP_TOKEN_USE_JOYSTICK       13
-#define SETUP_TOKEN_JOY_DEVICE_NAME    14
-#define SETUP_TOKEN_JOY_XLEFT          15
-#define SETUP_TOKEN_JOY_XMIDDLE                16
-#define SETUP_TOKEN_JOY_XRIGHT         17
-#define SETUP_TOKEN_JOY_YUPPER         18
-#define SETUP_TOKEN_JOY_YMIDDLE                19
-#define SETUP_TOKEN_JOY_YLOWER         20
-#define SETUP_TOKEN_JOY_SNAP           21
-#define SETUP_TOKEN_JOY_BOMB           22
-#define SETUP_TOKEN_KEY_LEFT           23
-#define SETUP_TOKEN_KEY_RIGHT          24
-#define SETUP_TOKEN_KEY_UP             25
-#define SETUP_TOKEN_KEY_DOWN           26
-#define SETUP_TOKEN_KEY_SNAP           27
-#define SETUP_TOKEN_KEY_BOMB           28
+#define SETUP_TOKEN_USE_JOYSTICK       14
+#define SETUP_TOKEN_JOY_DEVICE_NAME    15
+#define SETUP_TOKEN_JOY_XLEFT          16
+#define SETUP_TOKEN_JOY_XMIDDLE                17
+#define SETUP_TOKEN_JOY_XRIGHT         18
+#define SETUP_TOKEN_JOY_YUPPER         19
+#define SETUP_TOKEN_JOY_YMIDDLE                20
+#define SETUP_TOKEN_JOY_YLOWER         21
+#define SETUP_TOKEN_JOY_SNAP           22
+#define SETUP_TOKEN_JOY_BOMB           23
+#define SETUP_TOKEN_KEY_LEFT           24
+#define SETUP_TOKEN_KEY_RIGHT          25
+#define SETUP_TOKEN_KEY_UP             26
+#define SETUP_TOKEN_KEY_DOWN           27
+#define SETUP_TOKEN_KEY_SNAP           28
+#define SETUP_TOKEN_KEY_BOMB           29
 
 /* level directory info */
-#define LEVELINFO_TOKEN_NAME           29
-#define LEVELINFO_TOKEN_NAME_SHORT     30
-#define LEVELINFO_TOKEN_NAME_SORTING   31
-#define LEVELINFO_TOKEN_AUTHOR         32
-#define LEVELINFO_TOKEN_IMPORTED_FROM  33
-#define LEVELINFO_TOKEN_LEVELS         34
-#define LEVELINFO_TOKEN_FIRST_LEVEL    35
-#define LEVELINFO_TOKEN_SORT_PRIORITY  36
-#define LEVELINFO_TOKEN_READONLY       37
+#define LEVELINFO_TOKEN_NAME           30
+#define LEVELINFO_TOKEN_NAME_SHORT     31
+#define LEVELINFO_TOKEN_NAME_SORTING   32
+#define LEVELINFO_TOKEN_AUTHOR         33
+#define LEVELINFO_TOKEN_IMPORTED_FROM  34
+#define LEVELINFO_TOKEN_LEVELS         35
+#define LEVELINFO_TOKEN_FIRST_LEVEL    36
+#define LEVELINFO_TOKEN_SORT_PRIORITY  37
+#define LEVELINFO_TOKEN_LEVEL_GROUP    38
+#define LEVELINFO_TOKEN_READONLY       39
 
 #define FIRST_GLOBAL_SETUP_TOKEN       SETUP_TOKEN_PLAYER_NAME
-#define LAST_GLOBAL_SETUP_TOKEN                SETUP_TOKEN_TIME_LIMIT
+#define LAST_GLOBAL_SETUP_TOKEN                SETUP_TOKEN_FULLSCREEN
 
 #define FIRST_PLAYER_SETUP_TOKEN       SETUP_TOKEN_USE_JOYSTICK
 #define LAST_PLAYER_SETUP_TOKEN                SETUP_TOKEN_KEY_BOMB
@@ -1080,7 +1084,7 @@ void SaveScore(int level_nr)
 
 #define TYPE_BOOLEAN                   1
 #define TYPE_SWITCH                    2
-#define TYPE_KEYSYM                    3
+#define TYPE_KEY                       3
 #define TYPE_INTEGER                   4
 #define TYPE_STRING                    5
 
@@ -1114,6 +1118,7 @@ static struct
   { TYPE_SWITCH,  &si.team_mode,       "team_mode"                     },
   { TYPE_SWITCH,  &si.handicap,                "handicap"                      },
   { TYPE_SWITCH,  &si.time_limit,      "time_limit"                    },
+  { TYPE_SWITCH,  &si.fullscreen,      "fullscreen"                    },
 
   /* player setup */
   { TYPE_BOOLEAN, &sii.use_joystick,   ".use_joystick"                 },
@@ -1126,12 +1131,12 @@ static struct
   { TYPE_INTEGER, &sii.joy.ylower,     ".joy.ylower"                   },
   { TYPE_INTEGER, &sii.joy.snap,       ".joy.snap_field"               },
   { TYPE_INTEGER, &sii.joy.bomb,       ".joy.place_bomb"               },
-  { TYPE_KEYSYM,  &sii.key.left,       ".key.move_left"                },
-  { TYPE_KEYSYM,  &sii.key.right,      ".key.move_right"               },
-  { TYPE_KEYSYM,  &sii.key.up,         ".key.move_up"                  },
-  { TYPE_KEYSYM,  &sii.key.down,       ".key.move_down"                },
-  { TYPE_KEYSYM,  &sii.key.snap,       ".key.snap_field"               },
-  { TYPE_KEYSYM,  &sii.key.bomb,       ".key.place_bomb"               },
+  { TYPE_KEY,     &sii.key.left,       ".key.move_left"                },
+  { TYPE_KEY,     &sii.key.right,      ".key.move_right"               },
+  { TYPE_KEY,     &sii.key.up,         ".key.move_up"                  },
+  { TYPE_KEY,     &sii.key.down,       ".key.move_down"                },
+  { TYPE_KEY,     &sii.key.snap,       ".key.snap_field"               },
+  { TYPE_KEY,     &sii.key.bomb,       ".key.place_bomb"               },
 
   /* level directory info */
   { TYPE_STRING,  &ldi.name,           "name"                          },
@@ -1142,6 +1147,7 @@ static struct
   { TYPE_INTEGER, &ldi.levels,         "levels"                        },
   { TYPE_INTEGER, &ldi.first_level,    "first_level"                   },
   { TYPE_INTEGER, &ldi.sort_priority,  "sort_priority"                 },
+  { TYPE_BOOLEAN, &ldi.level_group,    "level_group"                   },
   { TYPE_BOOLEAN, &ldi.readonly,       "readonly"                      }
 };
 
@@ -1403,6 +1409,8 @@ static void checkSetupFileListIdentifier(struct SetupFileList *setup_file_list,
 static void setLevelDirInfoToDefaults(struct LevelDirInfo *ldi)
 {
   ldi->filename = NULL;
+  ldi->fullpath = NULL;
+  ldi->basepath = NULL;
   ldi->name = getStringCopy(ANONYMOUS_NAME);
   ldi->name_short = NULL;
   ldi->name_sorting = NULL;
@@ -1412,11 +1420,55 @@ static void setLevelDirInfoToDefaults(struct LevelDirInfo *ldi)
   ldi->first_level = 0;
   ldi->last_level = 0;
   ldi->sort_priority = LEVELCLASS_UNDEFINED;   /* default: least priority */
-  ldi->readonly = TRUE;
+  ldi->level_group = FALSE;
+  ldi->parent_link = FALSE;
   ldi->user_defined = FALSE;
+  ldi->readonly = TRUE;
   ldi->color = 0;
   ldi->class_desc = NULL;
   ldi->handicap_level = 0;
+  ldi->cl_first = -1;
+  ldi->cl_cursor = -1;
+
+  ldi->node_parent = NULL;
+  ldi->node_group = NULL;
+  ldi->next = NULL;
+}
+
+static void setLevelDirInfoToDefaultsFromParent(struct LevelDirInfo *ldi,
+                                               struct LevelDirInfo *parent)
+{
+  if (parent == NULL)
+  {
+    setLevelDirInfoToDefaults(ldi);
+    return;
+  }
+
+  /* first copy all values from the parent structure ... */
+  *ldi = *parent;
+
+  /* ... then set all fields to default that cannot be inherited from parent.
+     This is especially important for all those fields that can be set from
+     the 'levelinfo.conf' config file, because the function 'setSetupInfo()'
+     calls 'free()' for all already set token values which requires that no
+     other structure's pointer may point to them!
+  */
+
+  ldi->filename = NULL;
+  ldi->fullpath = NULL;
+  ldi->basepath = NULL;
+  ldi->name = getStringCopy(ANONYMOUS_NAME);
+  ldi->name_short = NULL;
+  ldi->name_sorting = NULL;
+  ldi->author = getStringCopy(parent->author);
+  ldi->imported_from = getStringCopy(parent->imported_from);
+
+  ldi->level_group = FALSE;
+  ldi->parent_link = FALSE;
+
+  ldi->node_parent = parent;
+  ldi->node_group = NULL;
+  ldi->next = NULL;
 }
 
 static void setSetupInfoToDefaults(struct SetupInfo *si)
@@ -1440,6 +1492,7 @@ static void setSetupInfoToDefaults(struct SetupInfo *si)
   si->team_mode = FALSE;
   si->handicap = TRUE;
   si->time_limit = TRUE;
+  si->fullscreen = FALSE;
 
   for (i=0; i<MAX_PLAYERS; i++)
   {
@@ -1453,12 +1506,12 @@ static void setSetupInfoToDefaults(struct SetupInfo *si)
     si->input[i].joy.ylower  = JOYSTICK_YLOWER;
     si->input[i].joy.snap  = (i == 0 ? JOY_BUTTON_1 : 0);
     si->input[i].joy.bomb  = (i == 0 ? JOY_BUTTON_2 : 0);
-    si->input[i].key.left  = (i == 0 ? DEFAULT_KEY_LEFT  : KEY_UNDEFINDED);
-    si->input[i].key.right = (i == 0 ? DEFAULT_KEY_RIGHT : KEY_UNDEFINDED);
-    si->input[i].key.up    = (i == 0 ? DEFAULT_KEY_UP    : KEY_UNDEFINDED);
-    si->input[i].key.down  = (i == 0 ? DEFAULT_KEY_DOWN  : KEY_UNDEFINDED);
-    si->input[i].key.snap  = (i == 0 ? DEFAULT_KEY_SNAP  : KEY_UNDEFINDED);
-    si->input[i].key.bomb  = (i == 0 ? DEFAULT_KEY_BOMB  : KEY_UNDEFINDED);
+    si->input[i].key.left  = (i == 0 ? DEFAULT_KEY_LEFT  : KSYM_UNDEFINED);
+    si->input[i].key.right = (i == 0 ? DEFAULT_KEY_RIGHT : KSYM_UNDEFINED);
+    si->input[i].key.up    = (i == 0 ? DEFAULT_KEY_UP    : KSYM_UNDEFINED);
+    si->input[i].key.down  = (i == 0 ? DEFAULT_KEY_DOWN  : KSYM_UNDEFINED);
+    si->input[i].key.snap  = (i == 0 ? DEFAULT_KEY_SNAP  : KSYM_UNDEFINED);
+    si->input[i].key.bomb  = (i == 0 ? DEFAULT_KEY_BOMB  : KSYM_UNDEFINED);
   }
 }
 
@@ -1478,8 +1531,8 @@ static void setSetupInfo(int token_nr, char *token_value)
       *(boolean *)setup_value = get_string_boolean_value(token_value);
       break;
 
-    case TYPE_KEYSYM:
-      *(KeySym *)setup_value = getKeySymFromX11KeyName(token_value);
+    case TYPE_KEY:
+      *(Key *)setup_value = getKeyFromX11KeyName(token_value);
       break;
 
     case TYPE_INTEGER:
@@ -1529,27 +1582,15 @@ static void decodeSetupFileList(struct SetupFileList *setup_file_list)
   }
 }
 
-int getLevelSeriesNrFromLevelSeriesName(char *level_series_name)
-{
-  int i;
-
-  if (!level_series_name)
-    return 0;
-
-  for (i=0; i<num_leveldirs; i++)
-    if (strcmp(level_series_name, leveldir[i].filename) == 0)
-      return i;
-
-  return 0;
-}
-
 static int compareLevelDirInfoEntries(const void *object1, const void *object2)
 {
-  const struct LevelDirInfo *entry1 = object1;
-  const struct LevelDirInfo *entry2 = object2;
+  const struct LevelDirInfo *entry1 = *((struct LevelDirInfo **)object1);
+  const struct LevelDirInfo *entry2 = *((struct LevelDirInfo **)object2);
   int compare_result;
 
-  if (entry1->sort_priority == entry2->sort_priority)
+  if (entry1->parent_link || entry2->parent_link)
+    compare_result = (entry1->parent_link ? -1 : +1);
+  else if (entry1->sort_priority == entry2->sort_priority)
   {
     char *name1 = getStringToLower(entry1->name_sorting);
     char *name2 = getStringToLower(entry2->name_sorting);
@@ -1567,134 +1608,170 @@ static int compareLevelDirInfoEntries(const void *object1, const void *object2)
   return compare_result;
 }
 
-static int LoadLevelInfoFromLevelDir(char *level_directory, int start_entry)
+static void createParentLevelDirNode(struct LevelDirInfo *node_parent)
+{
+  struct LevelDirInfo *leveldir_new = newLevelDirInfo();
+
+  setLevelDirInfoToDefaults(leveldir_new);
+
+  leveldir_new->node_parent = node_parent;
+  leveldir_new->parent_link = TRUE;
+
+  leveldir_new->name = ".. (parent directory)";
+  leveldir_new->name_short = getStringCopy(leveldir_new->name);
+  leveldir_new->name_sorting = getStringCopy(leveldir_new->name);
+
+  leveldir_new->filename = "..";
+  leveldir_new->fullpath = getStringCopy(node_parent->fullpath);
+
+  leveldir_new->sort_priority = node_parent->sort_priority;
+  leveldir_new->class_desc = getLevelClassDescription(leveldir_new);
+
+  pushLevelDirInfo(&node_parent->node_group, leveldir_new);
+}
+
+static void LoadLevelInfoFromLevelDir(struct LevelDirInfo **node_first,
+                                     struct LevelDirInfo *node_parent,
+                                     char *level_directory)
 {
   DIR *dir;
-  struct stat file_status;
-  char *directory = NULL;
-  char *filename = NULL;
-  struct SetupFileList *setup_file_list = NULL;
   struct dirent *dir_entry;
-  int i, current_entry = start_entry;
+  boolean valid_entry_found = FALSE;
 
   if ((dir = opendir(level_directory)) == NULL)
   {
     Error(ERR_WARN, "cannot read level directory '%s'", level_directory);
-    return current_entry;
+    return;
   }
 
-  while (current_entry < MAX_LEVDIR_ENTRIES)
+  while ((dir_entry = readdir(dir)) != NULL)   /* loop until last dir entry */
   {
-    if ((dir_entry = readdir(dir)) == NULL)    /* last directory entry */
-      break;
+    struct SetupFileList *setup_file_list = NULL;
+    struct stat file_status;
+    char *directory_name = dir_entry->d_name;
+    char *directory_path = getPath2(level_directory, directory_name);
+    char *filename = NULL;
 
     /* skip entries for current and parent directory */
-    if (strcmp(dir_entry->d_name, ".")  == 0 ||
-       strcmp(dir_entry->d_name, "..") == 0)
+    if (strcmp(directory_name, ".")  == 0 ||
+       strcmp(directory_name, "..") == 0)
+    {
+      free(directory_path);
       continue;
+    }
 
     /* find out if directory entry is itself a directory */
-    directory = getPath2(level_directory, dir_entry->d_name);
-    if (stat(directory, &file_status) != 0 ||          /* cannot stat file */
+    if (stat(directory_path, &file_status) != 0 ||     /* cannot stat file */
        (file_status.st_mode & S_IFMT) != S_IFDIR)      /* not a directory */
     {
-      free(directory);
+      free(directory_path);
       continue;
     }
 
-    filename = getPath2(directory, LEVELINFO_FILENAME);
+    filename = getPath2(directory_path, LEVELINFO_FILENAME);
     setup_file_list = loadSetupFileList(filename);
 
     if (setup_file_list)
     {
-#if 0
-      DrawInitText(dir_entry->d_name, 150, FC_YELLOW);
-#endif
+      struct LevelDirInfo *leveldir_new = newLevelDirInfo();
+      int i;
 
       checkSetupFileListIdentifier(setup_file_list, LEVELINFO_COOKIE);
-      setLevelDirInfoToDefaults(&leveldir[current_entry]);
+      setLevelDirInfoToDefaultsFromParent(leveldir_new, node_parent);
 
-      ldi = leveldir[current_entry];
+      /* set all structure fields according to the token/value pairs */
+      ldi = *leveldir_new;
       for (i=FIRST_LEVELINFO_TOKEN; i<=LAST_LEVELINFO_TOKEN; i++)
        setSetupInfo(i, getTokenValue(setup_file_list, token_info[i].text));
-      leveldir[current_entry] = ldi;
+      *leveldir_new = ldi;
 
-#if 1
-      DrawInitText(leveldir[current_entry].name, 150, FC_YELLOW);
-#endif
+      DrawInitText(leveldir_new->name, 150, FC_YELLOW);
 
-      if (leveldir[current_entry].name_short == NULL)
-       leveldir[current_entry].name_short =
-         getStringCopy(leveldir[current_entry].name);
-
-      if (leveldir[current_entry].name_sorting == NULL)
-       leveldir[current_entry].name_sorting =
-         getStringCopy(leveldir[current_entry].name);
-
-      leveldir[current_entry].filename = getStringCopy(dir_entry->d_name);
-      leveldir[current_entry].last_level =
-       leveldir[current_entry].first_level +
-       leveldir[current_entry].levels - 1;
-      leveldir[current_entry].user_defined =
-       (level_directory == options.level_directory ? FALSE : TRUE);
-      leveldir[current_entry].color = LEVELCOLOR(&leveldir[current_entry]);
-      leveldir[current_entry].class_desc =
-       getLevelClassDescription(&leveldir[current_entry]);
-#if 0
-      leveldir[current_entry].handicap_level =
-       leveldir[current_entry].first_level;    /* default value */
-#else
-      leveldir[current_entry].handicap_level =
-       (leveldir[current_entry].user_defined ?
-        leveldir[current_entry].last_level :
-        leveldir[current_entry].first_level);
-#endif
+      if (leveldir_new->name_short == NULL)
+       leveldir_new->name_short = getStringCopy(leveldir_new->name);
+
+      if (leveldir_new->name_sorting == NULL)
+       leveldir_new->name_sorting = getStringCopy(leveldir_new->name);
+
+      leveldir_new->filename = getStringCopy(directory_name);
+
+      if (node_parent == NULL)         /* top level group */
+      {
+       leveldir_new->basepath = level_directory;
+       leveldir_new->fullpath = leveldir_new->filename;
+      }
+      else                             /* sub level group */
+      {
+       leveldir_new->basepath = node_parent->basepath;
+       leveldir_new->fullpath = getPath2(node_parent->fullpath,
+                                         directory_name);
+      }
+
+      if (leveldir_new->levels < 1)
+       leveldir_new->levels = 1;
+
+      leveldir_new->last_level =
+       leveldir_new->first_level + leveldir_new->levels - 1;
+
+      leveldir_new->user_defined =
+       (leveldir_new->basepath == options.level_directory ? FALSE : TRUE);
+
+      leveldir_new->color = LEVELCOLOR(leveldir_new);
+      leveldir_new->class_desc = getLevelClassDescription(leveldir_new);
+
+      leveldir_new->handicap_level =   /* set handicap to default value */
+       (leveldir_new->user_defined ?
+        leveldir_new->last_level :
+        leveldir_new->first_level);
+
+      pushLevelDirInfo(node_first, leveldir_new);
 
       freeSetupFileList(setup_file_list);
-      current_entry++;
+      valid_entry_found = TRUE;
+
+      if (leveldir_new->level_group)
+      {
+       /* create node to link back to current level directory */
+       createParentLevelDirNode(leveldir_new);
+
+       /* step into sub-directory and look for more level series */
+       LoadLevelInfoFromLevelDir(&leveldir_new->node_group,
+                                 leveldir_new, directory_path);
+      }
     }
     else
-      Error(ERR_WARN, "ignoring level directory '%s'", directory);
+      Error(ERR_WARN, "ignoring level directory '%s'", directory_path);
 
-    free(directory);
+    free(directory_path);
     free(filename);
   }
 
   closedir(dir);
 
-  if (current_entry == MAX_LEVDIR_ENTRIES)
-  {
-    Error(ERR_WARN, "maximum of %d level directories reached", current_entry);
-    Error(ERR_WARN, "remaining level directories ignored in directory '%s'",
-         level_directory);
-  }
-  else if (current_entry == start_entry)
+  if (!valid_entry_found)
     Error(ERR_WARN, "cannot find any valid level series in directory '%s'",
          level_directory);
-
-  return current_entry;
 }
 
 void LoadLevelInfo()
 {
   InitUserLevelDirectory(getLoginName());
 
-  num_leveldirs = 0;
-  leveldir_nr = 0;
-
   DrawInitText("Loading level series:", 120, FC_GREEN);
 
-  num_leveldirs = LoadLevelInfoFromLevelDir(options.level_directory,
-                                           num_leveldirs);
-  num_leveldirs = LoadLevelInfoFromLevelDir(getUserLevelDir(""),
-                                           num_leveldirs);
+  LoadLevelInfoFromLevelDir(&leveldir_first, NULL, options.level_directory);
+  LoadLevelInfoFromLevelDir(&leveldir_first, NULL, getUserLevelDir(""));
 
-  if (num_leveldirs == 0)
+  leveldir_current = getFirstValidLevelSeries(leveldir_first);
+
+  if (leveldir_first == NULL)
     Error(ERR_EXIT, "cannot find any valid level series in any directory");
 
-  if (num_leveldirs > 1)
-    qsort(leveldir, num_leveldirs, sizeof(struct LevelDirInfo),
-         compareLevelDirInfoEntries);
+  sortLevelDirInfo(&leveldir_first, compareLevelDirInfoEntries);
+
+#if 0
+  dumpLevelDirInfo(leveldir_first, 0);
+#endif
 }
 
 static void SaveUserLevelInfo()
@@ -1800,12 +1877,12 @@ static char *getSetupLine(char *prefix, int token_nr)
       strcat(entry, (*(boolean *)setup_value ? "on" : "off"));
       break;
 
-    case TYPE_KEYSYM:
+    case TYPE_KEY:
       {
-       KeySym keysym = *(KeySym *)setup_value;
-       char *keyname = getKeyNameFromKeySym(keysym);
+       Key key = *(Key *)setup_value;
+       char *keyname = getKeyNameFromKey(key);
 
-       strcat(entry, getX11KeyNameFromKeySym(keysym));
+       strcat(entry, getX11KeyNameFromKey(key));
        for (i=strlen(entry); i<50; i++)
          strcat(entry, " ");
 
@@ -1896,7 +1973,7 @@ void LoadLevelSetup_LastSeries()
   struct SetupFileList *level_setup_list = NULL;
 
   /* always start with reliable default values */
-  leveldir_nr = 0;
+  leveldir_current = leveldir_first;
 
   /* ----------------------------------------------------------------------- */
   /* ~/.rocksndiamonds/levelsetup.conf                                       */
@@ -1909,7 +1986,9 @@ void LoadLevelSetup_LastSeries()
     char *last_level_series =
       getTokenValue(level_setup_list, TOKEN_STR_LAST_LEVEL_SERIES);
 
-    leveldir_nr = getLevelSeriesNrFromLevelSeriesName(last_level_series);
+    leveldir_current = getLevelDirInfoFromFilename(last_level_series);
+    if (leveldir_current == NULL)
+      leveldir_current = leveldir_first;
 
     checkSetupFileListIdentifier(level_setup_list, LEVELSETUP_COOKIE);
 
@@ -1924,7 +2003,7 @@ void LoadLevelSetup_LastSeries()
 void SaveLevelSetup_LastSeries()
 {
   char *filename;
-  char *level_subdir = leveldir[leveldir_nr].filename;
+  char *level_subdir = leveldir_current->filename;
   FILE *file;
 
   /* ----------------------------------------------------------------------- */
@@ -1953,7 +2032,7 @@ void SaveLevelSetup_LastSeries()
   chmod(filename, SETUP_PERMS);
 }
 
-static void checkSeriesInfo(int leveldir_nr)
+static void checkSeriesInfo()
 {
   static char *level_directory = NULL;
   DIR *dir;
@@ -1961,10 +2040,10 @@ static void checkSeriesInfo(int leveldir_nr)
 
   /* check for more levels besides the 'levels' field of 'levelinfo.conf' */
 
-  level_directory = getPath2((leveldir[leveldir_nr].user_defined ?
+  level_directory = getPath2((leveldir_current->user_defined ?
                              getUserLevelDir("") :
                              options.level_directory),
-                            leveldir[leveldir_nr].filename);
+                            leveldir_current->fullpath);
 
   if ((dir = opendir(level_directory)) == NULL)
   {
@@ -1986,15 +2065,15 @@ static void checkSeriesInfo(int leveldir_nr)
 
       levelnum_value = atoi(levelnum_str);
 
-      if (levelnum_value < leveldir[leveldir_nr].first_level)
+      if (levelnum_value < leveldir_current->first_level)
       {
        Error(ERR_WARN, "additional level %d found", levelnum_value);
-       leveldir[leveldir_nr].first_level = levelnum_value;
+       leveldir_current->first_level = levelnum_value;
       }
-      else if (levelnum_value > leveldir[leveldir_nr].last_level)
+      else if (levelnum_value > leveldir_current->last_level)
       {
        Error(ERR_WARN, "additional level %d found", levelnum_value);
-       leveldir[leveldir_nr].last_level = levelnum_value;
+       leveldir_current->last_level = levelnum_value;
       }
     }
   }
@@ -2002,27 +2081,22 @@ static void checkSeriesInfo(int leveldir_nr)
   closedir(dir);
 }
 
-void LoadLevelSetup_SeriesInfo(int leveldir_nr)
+void LoadLevelSetup_SeriesInfo()
 {
   char *filename;
   struct SetupFileList *level_setup_list = NULL;
-  char *level_subdir = leveldir[leveldir_nr].filename;
+  char *level_subdir = leveldir_current->filename;
 
   /* always start with reliable default values */
-#if 0
-  level_nr = 0;
-  leveldir[leveldir_nr].handicap_level = 0;
-#else
-  level_nr = leveldir[leveldir_nr].first_level;
-#endif
+  level_nr = leveldir_current->first_level;
 
-  checkSeriesInfo(leveldir_nr);
+  checkSeriesInfo(leveldir_current);
 
   /* ----------------------------------------------------------------------- */
   /* ~/.rocksndiamonds/levelsetup/<level series>/levelsetup.conf             */
   /* ----------------------------------------------------------------------- */
 
-  level_subdir = leveldir[leveldir_nr].filename;
+  level_subdir = leveldir_current->filename;
 
   filename = getPath2(getLevelSetupDir(level_subdir), LEVELSETUP_FILENAME);
 
@@ -2036,10 +2110,10 @@ void LoadLevelSetup_SeriesInfo(int leveldir_nr)
     {
       level_nr = atoi(token_value);
 
-      if (level_nr < leveldir[leveldir_nr].first_level)
-       level_nr = leveldir[leveldir_nr].first_level;
-      if (level_nr > leveldir[leveldir_nr].last_level)
-       level_nr = leveldir[leveldir_nr].last_level;
+      if (level_nr < leveldir_current->first_level)
+       level_nr = leveldir_current->first_level;
+      if (level_nr > leveldir_current->last_level)
+       level_nr = leveldir_current->last_level;
     }
 
     token_value = getTokenValue(level_setup_list, TOKEN_STR_HANDICAP_LEVEL);
@@ -2048,15 +2122,15 @@ void LoadLevelSetup_SeriesInfo(int leveldir_nr)
     {
       int level_nr = atoi(token_value);
 
-      if (level_nr < leveldir[leveldir_nr].first_level)
-       level_nr = leveldir[leveldir_nr].first_level;
-      if (level_nr > leveldir[leveldir_nr].last_level + 1)
-       level_nr = leveldir[leveldir_nr].last_level;
+      if (level_nr < leveldir_current->first_level)
+       level_nr = leveldir_current->first_level;
+      if (level_nr > leveldir_current->last_level + 1)
+       level_nr = leveldir_current->last_level;
 
-      if (leveldir[leveldir_nr].user_defined)
-       level_nr = leveldir[leveldir_nr].last_level;
+      if (leveldir_current->user_defined)
+       level_nr = leveldir_current->last_level;
 
-      leveldir[leveldir_nr].handicap_level = level_nr;
+      leveldir_current->handicap_level = level_nr;
     }
 
     checkSetupFileListIdentifier(level_setup_list, LEVELSETUP_COOKIE);
@@ -2069,12 +2143,12 @@ void LoadLevelSetup_SeriesInfo(int leveldir_nr)
   free(filename);
 }
 
-void SaveLevelSetup_SeriesInfo(int leveldir_nr)
+void SaveLevelSetup_SeriesInfo()
 {
   char *filename;
-  char *level_subdir = leveldir[leveldir_nr].filename;
+  char *level_subdir = leveldir_current->filename;
   char *level_nr_str = int2str(level_nr, 0);
-  char *handicap_level_str = int2str(leveldir[leveldir_nr].handicap_level, 0);
+  char *handicap_level_str = int2str(leveldir_current->handicap_level, 0);
   FILE *file;
 
   /* ----------------------------------------------------------------------- */
@@ -2104,46 +2178,3 @@ void SaveLevelSetup_SeriesInfo(int leveldir_nr)
 
   chmod(filename, SETUP_PERMS);
 }
-
-#ifdef MSDOS
-void initErrorFile()
-{
-  char *filename;
-
-  InitUserDataDirectory();
-
-  filename = getPath2(getUserDataDir(), ERROR_FILENAME);
-  unlink(filename);
-  free(filename);
-}
-
-FILE *openErrorFile()
-{
-  char *filename;
-  FILE *error_file;
-
-  filename = getPath2(getUserDataDir(), ERROR_FILENAME);
-  error_file = fopen(filename, "a");
-  free(filename);
-
-  return error_file;
-}
-
-void dumpErrorFile()
-{
-  char *filename;
-  FILE *error_file;
-
-  filename = getPath2(getUserDataDir(), ERROR_FILENAME);
-  error_file = fopen(filename, "r");
-  free(filename);
-
-  if (error_file != NULL)
-  {
-    while (!feof(error_file))
-      fputc(fgetc(error_file), stderr);
-
-    fclose(error_file);
-  }
-}
-#endif