rnd-19981205-2

[rocksndiamonds.git] / src / files.c

diff --git a/src/files.c b/src/files.c
index 46671d4631c18ca86423f370eb81c7a3a01dbc70..21309b825bf505ea3fc4ba98271d55874a3f0fb0 100644 (file)
--- a/src/files.c
+++ b/src/files.c
@@ -22,7 +22,56 @@
 #include "tape.h"
 #include "joystick.h"
 
 #include "tape.h"
 #include "joystick.h"
 

-#define MAX_LINE_LEN                   1000
+#define MAX_FILENAME_LEN       256     /* maximal filename length */
+#define MAX_LINE_LEN           1000    /* maximal input line length */
+#define CHUNK_ID_LEN           4       /* IFF style chunk id length */
+#define LEVEL_HEADER_SIZE      80      /* size of level file header */
+#define LEVEL_HEADER_UNUSED    18      /* unused level header bytes */
+#define TAPE_HEADER_SIZE       20      /* size of tape file header */
+#define TAPE_HEADER_UNUSED     7       /* unused tape header bytes */
+#define FILE_VERSION_1_0       10      /* old 1.0 file version */
+#define FILE_VERSION_1_2       12      /* actual file version */
+
+/* file identifier strings */
+#define LEVEL_COOKIE           "ROCKSNDIAMONDS_LEVEL_FILE_VERSION_1.2"
+#define SCORE_COOKIE           "ROCKSNDIAMONDS_SCORE_FILE_VERSION_1.2"
+#define TAPE_COOKIE            "ROCKSNDIAMONDS_TAPE_FILE_VERSION_1.2"
+#define SETUP_COOKIE           "ROCKSNDIAMONDS_SETUP_FILE_VERSION_1.2"
+#define LEVELSETUP_COOKIE      "ROCKSNDIAMONDS_LEVELSETUP_FILE_VERSION_1.2"
+#define LEVELINFO_COOKIE       "ROCKSNDIAMONDS_LEVELINFO_FILE_VERSION_1.2"
+/* old file identifiers for backward compatibility */
+#define LEVEL_COOKIE_10                "ROCKSNDIAMONDS_LEVEL_FILE_VERSION_1.0"
+#define TAPE_COOKIE_10         "ROCKSNDIAMONDS_LEVELREC_FILE_VERSION_1.0"
+
+/* file names and filename extensions */
+#ifndef MSDOS
+#define USERDATA_DIRECTORY     ".rocksndiamonds"
+#define SETUP_FILENAME         "setup.conf"
+#define LEVELSETUP_FILENAME    "levelsetup.conf"
+#define LEVELINFO_FILENAME     "levelinfo.conf"
+#define LEVELFILE_EXTENSION    "level"
+#define TAPEFILE_EXTENSION     "tape"
+#define SCOREFILE_EXTENSION    "score"
+#else
+#define USERDATA_DIRECTORY     "userdata"
+#define SETUP_FILENAME         "setup.cnf"
+#define LEVELSETUP_FILENAME    "lvlsetup.cnf"
+#define LEVELINFO_FILENAME     "lvlinfo.cnf"
+#define LEVELFILE_EXTENSION    "lvl"
+#define TAPEFILE_EXTENSION     "tap"
+#define SCOREFILE_EXTENSION    "sco"
+#define ERROR_FILENAME         "error.out"
+#endif
+
+/* 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
+#define SETUP_PERMS            LEVEL_PERMS

 
 static void SaveUserLevelInfo();               /* for 'InitUserLevelDir()' */
 static char *getSetupLine(char *, int);                /* for 'SaveUserLevelInfo()' */
 
 static void SaveUserLevelInfo();               /* for 'InitUserLevelDir()' */
 static char *getSetupLine(char *, int);                /* for 'SaveUserLevelInfo()' */


@@ -32,7 +81,7 @@ static char *getGlobalDataDir()
   return GAME_DIR;
 }
 
   return GAME_DIR;
 }
 

-static char *getUserDataDir()
+char *getUserDataDir()

 {
   static char *userdata_dir = NULL;
 
 {
   static char *userdata_dir = NULL;
 


@@ -41,8 +90,7 @@ static char *getUserDataDir()
     char *home_dir = getHomeDir();
     char *data_dir = USERDATA_DIRECTORY;
 
     char *home_dir = getHomeDir();
     char *data_dir = USERDATA_DIRECTORY;
 

-    userdata_dir = checked_malloc(strlen(home_dir) + strlen(data_dir) + 2);
-    sprintf(userdata_dir, "%s/%s", home_dir, data_dir);
+    userdata_dir = getPath2(home_dir, data_dir);

   }
 
   return userdata_dir;
   }
 
   return userdata_dir;


@@ -62,10 +110,10 @@ static char *getUserLevelDir(char *level_subdir)
   if (userlevel_dir)
     free(userlevel_dir);
 
   if (userlevel_dir)
     free(userlevel_dir);
 

-  userlevel_dir = checked_malloc(strlen(data_dir) + strlen(userlevel_subdir) +
-                                strlen(level_subdir) + 3);
-  sprintf(userlevel_dir, "%s/%s%s%s", data_dir, userlevel_subdir,
-         (strlen(level_subdir) > 0 ? "/" : ""), level_subdir);
+  if (strlen(level_subdir) > 0)
+    userlevel_dir = getPath3(data_dir, userlevel_subdir, level_subdir);
+  else
+    userlevel_dir = getPath2(data_dir, userlevel_subdir);

 
   return userlevel_dir;
 }
 
   return userlevel_dir;
 }


@@ -79,10 +127,10 @@ static char *getTapeDir(char *level_subdir)
   if (tape_dir)
     free(tape_dir);
 
   if (tape_dir)
     free(tape_dir);
 

-  tape_dir = checked_malloc(strlen(data_dir) + strlen(tape_subdir) +
-                           strlen(level_subdir) + 3);
-  sprintf(tape_dir, "%s/%s%s%s", data_dir, tape_subdir,
-         (strlen(level_subdir) > 0 ? "/" : ""), level_subdir);
+  if (strlen(level_subdir) > 0)
+    tape_dir = getPath3(data_dir, tape_subdir, level_subdir);
+  else
+    tape_dir = getPath2(data_dir, tape_subdir);

 
   return tape_dir;
 }
 
   return tape_dir;
 }


@@ -96,14 +144,60 @@ static char *getScoreDir(char *level_subdir)
   if (score_dir)
     free(score_dir);
 
   if (score_dir)
     free(score_dir);
 

-  score_dir = checked_malloc(strlen(data_dir) + strlen(score_subdir) +
-                            strlen(level_subdir) + 3);
-  sprintf(score_dir, "%s/%s%s%s", data_dir, score_subdir,
-         (strlen(level_subdir) > 0 ? "/" : ""), level_subdir);
+  if (strlen(level_subdir) > 0)
+    score_dir = getPath3(data_dir, score_subdir, level_subdir);
+  else
+    score_dir = getPath2(data_dir, score_subdir);

 
   return score_dir;
 }
 
 
   return score_dir;
 }
 

+static char *getLevelFilename(int nr)
+{
+  static char *filename = NULL;
+  char basename[MAX_FILENAME_LEN];
+
+  if (filename != NULL)
+    free(filename);
+
+  sprintf(basename, "%03d.%s", nr, LEVELFILE_EXTENSION);
+  filename = getPath3((leveldir[leveldir_nr].user_defined ?
+                      getUserLevelDir("") :
+                      options.level_directory),
+                     leveldir[leveldir_nr].filename,
+                     basename);
+
+  return filename;
+}
+
+static char *getTapeFilename(int nr)
+{
+  static char *filename = NULL;
+  char basename[MAX_FILENAME_LEN];
+
+  if (filename != NULL)
+    free(filename);
+
+  sprintf(basename, "%03d.%s", nr, TAPEFILE_EXTENSION);
+  filename = getPath2(getTapeDir(leveldir[leveldir_nr].filename), basename);
+
+  return filename;
+}
+
+static char *getScoreFilename(int nr)
+{
+  static char *filename = NULL;
+  char basename[MAX_FILENAME_LEN];
+
+  if (filename != NULL)
+    free(filename);
+
+  sprintf(basename, "%03d.%s", nr, SCOREFILE_EXTENSION);
+  filename = getPath2(getScoreDir(leveldir[leveldir_nr].filename), basename);
+
+  return filename;
+}
+

 static void createDirectory(char *dir, char *text)
 {
   if (access(dir, F_OK) != 0)
 static void createDirectory(char *dir, char *text)
 {
   if (access(dir, F_OK) != 0)


@@ -118,6 +212,7 @@ static void InitUserDataDirectory()
 
 static void InitTapeDirectory(char *level_subdir)
 {
 
 static void InitTapeDirectory(char *level_subdir)
 {

+  createDirectory(getUserDataDir(), "user data");

   createDirectory(getTapeDir(""), "main tape");
   createDirectory(getTapeDir(level_subdir), "level tape");
 }
   createDirectory(getTapeDir(""), "main tape");
   createDirectory(getTapeDir(level_subdir), "level tape");
 }


@@ -132,6 +227,7 @@ static void InitUserLevelDirectory(char *level_subdir)
 {
   if (access(getUserLevelDir(level_subdir), F_OK) != 0)
   {
 {
   if (access(getUserLevelDir(level_subdir), F_OK) != 0)
   {

+    createDirectory(getUserDataDir(), "user data");

     createDirectory(getUserLevelDir(""), "main user level");
     createDirectory(getUserLevelDir(level_subdir), "user level");
 
     createDirectory(getUserLevelDir(""), "main user level");
     createDirectory(getUserLevelDir(level_subdir), "user level");
 


@@ -139,112 +235,144 @@ static void InitUserLevelDirectory(char *level_subdir)
   }
 }
 
   }
 }
 

+static void setLevelInfoToDefaults()
+{
+  int i, x, y;
+
+  lev_fieldx = level.fieldx = STD_LEV_FIELDX;
+  lev_fieldy = level.fieldy = STD_LEV_FIELDY;
+
+  for(x=0; x<MAX_LEV_FIELDX; x++) 
+    for(y=0; y<MAX_LEV_FIELDY; y++) 
+      Feld[x][y] = Ur[x][y] = EL_ERDREICH;
+
+  level.time = 100;
+  level.edelsteine = 0;
+  level.tempo_amoebe = 10;
+  level.dauer_sieb = 10;
+  level.dauer_ablenk = 10;
+  level.amoebe_inhalt = EL_DIAMANT;
+
+  strcpy(level.name, "Nameless Level");
+
+  for(i=0; i<LEVEL_SCORE_ELEMENTS; i++)
+    level.score[i] = 10;
+
+  for(i=0; i<4; i++)
+    for(x=0; x<3; x++)
+      for(y=0; y<3; y++)
+       level.mampfer_inhalt[i][x][y] = EL_FELSBROCKEN;
+
+  Feld[0][0] = Ur[0][0] = EL_SPIELFIGUR;
+  Feld[STD_LEV_FIELDX-1][STD_LEV_FIELDY-1] =
+    Ur[STD_LEV_FIELDX-1][STD_LEV_FIELDY-1] = EL_AUSGANG_ZU;
+}
+

 void LoadLevel(int level_nr)
 {
   int i, x, y;
 void LoadLevel(int level_nr)
 {
   int i, x, y;

-  char filename[MAX_FILENAME_LEN];
-  char cookie[MAX_FILENAME_LEN];
+  char *filename = getLevelFilename(level_nr);
+  char cookie[MAX_LINE_LEN];
+  char chunk[CHUNK_ID_LEN + 1];
+  int file_version = FILE_VERSION_1_2; /* last version of level files */
+  int chunk_length;

   FILE *file;
 
   FILE *file;
 

-  if (leveldir[leveldir_nr].user_defined)
-    sprintf(filename, "%s/%s/%d",
-           getUserLevelDir(""), leveldir[leveldir_nr].filename, level_nr);
-  else
-    sprintf(filename, "%s/%s/%d",
-           options.level_directory, leveldir[leveldir_nr].filename, level_nr);
+  /* always start with reliable default values */
+  setLevelInfoToDefaults();

 
   if (!(file = fopen(filename, "r")))
 
   if (!(file = fopen(filename, "r")))

+  {

     Error(ERR_WARN, "cannot read level '%s' - creating new level", filename);
     Error(ERR_WARN, "cannot read level '%s' - creating new level", filename);

-  else
+    return;
+  }
+
+  /* check file identifier */
+  fgets(cookie, MAX_LINE_LEN, file);
+  if (strlen(cookie) > 0 && cookie[strlen(cookie) - 1] == '\n')
+    cookie[strlen(cookie) - 1] = '\0';
+
+  if (strcmp(cookie, LEVEL_COOKIE_10) == 0)    /* old 1.0 level format */
+    file_version = FILE_VERSION_1_0;
+  else if (strcmp(cookie, LEVEL_COOKIE) != 0)  /* unknown level format */

   {
   {

-    fgets(cookie, LEVEL_COOKIE_LEN, file);
-    fgetc(file);
+    Error(ERR_WARN, "wrong file identifier of level file '%s'", filename);
+    fclose(file);
+    return;
+  }

 
 

-    if (strcmp(cookie,LEVEL_COOKIE))
+  /* read chunk "HEAD" */
+  if (file_version >= FILE_VERSION_1_2)
+  {
+    /* first check header chunk identifier and chunk length */
+    fgets(chunk, CHUNK_ID_LEN + 1, file);
+    chunk_length =
+      (fgetc(file)<<24) | (fgetc(file)<<16) | (fgetc(file)<<8) | fgetc(file);
+    if (strcmp(chunk, "HEAD") || chunk_length != LEVEL_HEADER_SIZE)

     {
     {

-      Error(ERR_WARN, "wrong format of level file '%s'", filename);
+      Error(ERR_WARN, "wrong 'HEAD' chunk of level file '%s'", filename);

       fclose(file);
       fclose(file);

-      file = NULL;
+      return;

     }
   }
 
     }
   }
 

-  if (file)
-  {
-    lev_fieldx = level.fieldx = fgetc(file);
-    lev_fieldy = level.fieldy = fgetc(file);
-
-    level.time         = (fgetc(file)<<8) | fgetc(file);
-    level.edelsteine   = (fgetc(file)<<8) | fgetc(file);
-    for(i=0; i<MAX_LEVNAMLEN; i++)
-      level.name[i]    = fgetc(file);
-    level.name[MAX_LEVNAMLEN-1] = 0;
-    for(i=0; i<MAX_LEVSCORE_ENTRIES; i++)
-      level.score[i]   = fgetc(file);
-    for(i=0; i<4; i++)
-      for(y=0; y<3; y++)
-       for(x=0; x<3; x++)
-         level.mampfer_inhalt[i][x][y] = fgetc(file);
-    level.tempo_amoebe = fgetc(file);
-    level.dauer_sieb   = fgetc(file);
-    level.dauer_ablenk = fgetc(file);
-    level.amoebe_inhalt = fgetc(file);
-
-    for(i=0; i<NUM_FREE_LVHD_BYTES; i++) /* Rest frei / Headergröße 80 Bytes */
-      fgetc(file);
+  lev_fieldx = level.fieldx = fgetc(file);
+  lev_fieldy = level.fieldy = fgetc(file);

 
 

-    for(y=0; y<MAX_LEV_FIELDY; y++) 
-      for(x=0; x<MAX_LEV_FIELDX; x++) 
-       Feld[x][y] = Ur[x][y] = EL_ERDREICH;
+  level.time           = (fgetc(file)<<8) | fgetc(file);
+  level.edelsteine     = (fgetc(file)<<8) | fgetc(file);
+
+  for(i=0; i<MAX_LEVNAMLEN; i++)
+    level.name[i]      = fgetc(file);
+  level.name[MAX_LEVNAMLEN - 1] = 0;

 
 

-    for(y=0; y<lev_fieldy; y++) 
-      for(x=0; x<lev_fieldx; x++) 
-       Feld[x][y] = Ur[x][y] = fgetc(file);
+  for(i=0; i<LEVEL_SCORE_ELEMENTS; i++)
+    level.score[i]     = fgetc(file);

 
 

-    fclose(file);
+  for(i=0; i<4; i++)
+    for(y=0; y<3; y++)
+      for(x=0; x<3; x++)
+       level.mampfer_inhalt[i][x][y] = fgetc(file);

 
 

-    if (level.time <= 10)      /* Mindestspieldauer */
-      level.time = 10;
-  }
-  else
+  level.tempo_amoebe   = fgetc(file);
+  level.dauer_sieb     = fgetc(file);
+  level.dauer_ablenk   = fgetc(file);
+  level.amoebe_inhalt = fgetc(file);
+
+  for(i=0; i<LEVEL_HEADER_UNUSED; i++) /* skip unused header bytes */
+    fgetc(file);
+
+  /* read chunk "BODY" */
+  if (file_version >= FILE_VERSION_1_2)

   {
   {

-    lev_fieldx = level.fieldx = STD_LEV_FIELDX;
-    lev_fieldy = level.fieldy = STD_LEV_FIELDY;
-
-    level.time         = 100;
-    level.edelsteine   = 0;
-    strcpy(level.name, "Nameless Level");
-    for(i=0; i<MAX_LEVSCORE_ENTRIES; i++)
-      level.score[i]   = 10;
-    for(i=0; i<4; i++)
-      for(y=0; y<3; y++)
-       for(x=0; x<3; x++)
-         level.mampfer_inhalt[i][x][y] = EL_FELSBROCKEN;
-    level.tempo_amoebe = 10;
-    level.dauer_sieb   = 10;
-    level.dauer_ablenk = 10;
-    level.amoebe_inhalt = EL_DIAMANT;
-
-    for(y=0; y<STD_LEV_FIELDY; y++) 
-      for(x=0; x<STD_LEV_FIELDX; x++) 
-       Feld[x][y] = Ur[x][y] = EL_ERDREICH;
-    Feld[0][0] = Ur[0][0] = EL_SPIELFIGUR;
-    Feld[STD_LEV_FIELDX-1][STD_LEV_FIELDY-1] =
-      Ur[STD_LEV_FIELDX-1][STD_LEV_FIELDY-1] = EL_AUSGANG_ZU;
+    /* next check body chunk identifier and chunk length */
+    fgets(chunk, CHUNK_ID_LEN + 1, file);
+    chunk_length =
+      (fgetc(file)<<24) | (fgetc(file)<<16) | (fgetc(file)<<8) | fgetc(file);
+    if (strcmp(chunk, "BODY") || chunk_length != lev_fieldx * lev_fieldy)
+    {
+      Error(ERR_WARN, "wrong 'BODY' chunk of level file '%s'", filename);
+      fclose(file);
+      return;
+    }

   }
   }

+
+  for(y=0; y<lev_fieldy; y++) 
+    for(x=0; x<lev_fieldx; x++) 
+      Feld[x][y] = Ur[x][y] = fgetc(file);
+
+  fclose(file);
+
+  if (level.time <= 10)                /* minimum playing time of each level */
+    level.time = 10;

 }
 
 void SaveLevel(int level_nr)
 {
   int i, x, y;
 }
 
 void SaveLevel(int level_nr)
 {
   int i, x, y;

-  char filename[MAX_FILENAME_LEN];
+  char *filename = getLevelFilename(level_nr);

   FILE *file;
   FILE *file;

-
-  if (leveldir[leveldir_nr].user_defined)
-    sprintf(filename, "%s/%s/%d",
-           getUserLevelDir(""), leveldir[leveldir_nr].filename, level_nr);
-  else
-    sprintf(filename, "%s/%s/%d",
-           options.level_directory, leveldir[leveldir_nr].filename, level_nr);
+  int chunk_length;

 
   if (!(file = fopen(filename, "w")))
   {
 
   if (!(file = fopen(filename, "w")))
   {


@@ -252,8 +380,17 @@ void SaveLevel(int level_nr)
     return;
   }
 
     return;
   }
 

-  fputs(LEVEL_COOKIE,file);            /* Formatkennung */
-  fputc(0x0a, file);
+  fputs(LEVEL_COOKIE, file);           /* file identifier */
+  fputc('\n', file);
+
+  fputs("HEAD", file);                 /* chunk identifier for file header */
+
+  chunk_length = LEVEL_HEADER_SIZE;
+
+  fputc((chunk_length >>  24) & 0xff, file);
+  fputc((chunk_length >>  16) & 0xff, file);
+  fputc((chunk_length >>   8) & 0xff, file);
+  fputc((chunk_length >>   0) & 0xff, file);

 
   fputc(level.fieldx, file);
   fputc(level.fieldy, file);
 
   fputc(level.fieldx, file);
   fputc(level.fieldy, file);


@@ -264,7 +401,7 @@ void SaveLevel(int level_nr)
 
   for(i=0; i<MAX_LEVNAMLEN; i++)
     fputc(level.name[i], file);
 
   for(i=0; i<MAX_LEVNAMLEN; i++)
     fputc(level.name[i], file);

-  for(i=0; i<MAX_LEVSCORE_ENTRIES; i++)
+  for(i=0; i<LEVEL_SCORE_ELEMENTS; i++)

     fputc(level.score[i], file);
   for(i=0; i<4; i++)
     for(y=0; y<3; y++)
     fputc(level.score[i], file);
   for(i=0; i<4; i++)
     for(y=0; y<3; y++)


@@ -275,9 +412,17 @@ void SaveLevel(int level_nr)
   fputc(level.dauer_ablenk, file);
   fputc(level.amoebe_inhalt, file);
 
   fputc(level.dauer_ablenk, file);
   fputc(level.amoebe_inhalt, file);
 

-  for(i=0; i<NUM_FREE_LVHD_BYTES; i++) /* Rest frei / Headergröße 80 Bytes */
+  for(i=0; i<LEVEL_HEADER_UNUSED; i++) /* set unused header bytes to zero */

     fputc(0, file);
 
     fputc(0, file);
 

+  fputs("BODY", file);                 /* chunk identifier for file body */
+  chunk_length = lev_fieldx * lev_fieldy;
+
+  fputc((chunk_length >>  24) & 0xff, file);
+  fputc((chunk_length >>  16) & 0xff, file);
+  fputc((chunk_length >>   8) & 0xff, file);
+  fputc((chunk_length >>   0) & 0xff, file);
+

   for(y=0; y<lev_fieldy; y++) 
     for(x=0; x<lev_fieldx; x++) 
       fputc(Ur[x][y], file);
   for(y=0; y<lev_fieldy; y++) 
     for(x=0; x<lev_fieldx; x++) 
       fputc(Ur[x][y], file);


@@ -289,33 +434,59 @@ void SaveLevel(int level_nr)
 
 void LoadTape(int level_nr)
 {
 
 void LoadTape(int level_nr)
 {

-  int i;
-  char filename[MAX_FILENAME_LEN];
-  char cookie[MAX_FILENAME_LEN];
+  int i, j;
+  char *filename = getTapeFilename(level_nr);
+  char cookie[MAX_LINE_LEN];
+  char chunk[CHUNK_ID_LEN + 1];

   FILE *file;
   FILE *file;

-  boolean levelrec_10 = FALSE;
+  int num_participating_players;
+  int file_version = FILE_VERSION_1_2; /* last version of tape files */
+  int chunk_length;
+
+  /* always start with reliable default values (empty tape) */
+  TapeErase();
+
+  /* default values (also for pre-1.2 tapes) with only the first player */
+  tape.player_participates[0] = TRUE;
+  for(i=1; i<MAX_PLAYERS; i++)
+    tape.player_participates[i] = FALSE;
+
+  /* at least one (default: the first) player participates in every tape */
+  num_participating_players = 1;
+
+  if (!(file = fopen(filename, "r")))
+    return;

 
 

-  sprintf(filename, "%s/%d.%s",
-         getTapeDir(leveldir[leveldir_nr].filename),
-         level_nr, TAPEFILE_EXTENSION);
+  /* check file identifier */
+  fgets(cookie, MAX_LINE_LEN, file);
+  if (strlen(cookie) > 0 && cookie[strlen(cookie) - 1] == '\n')
+    cookie[strlen(cookie) - 1] = '\0';

 
 

-  if ((file = fopen(filename, "r")))
+  if (strcmp(cookie, TAPE_COOKIE_10) == 0)     /* old 1.0 tape format */
+    file_version = FILE_VERSION_1_0;
+  else if (strcmp(cookie, TAPE_COOKIE) != 0)   /* unknown tape format */

   {
   {

-    fgets(cookie, LEVELREC_COOKIE_LEN, file);
-    fgetc(file);
-    if (!strcmp(cookie, LEVELREC_COOKIE_10))   /* old 1.0 tape format */
-      levelrec_10 = TRUE;
-    else if (strcmp(cookie, LEVELREC_COOKIE))  /* unknown tape format */
+    Error(ERR_WARN, "wrong file identifier of tape file '%s'", filename);
+    fclose(file);
+    return;
+  }
+
+  /* read chunk "HEAD" */
+  if (file_version >= FILE_VERSION_1_2)
+  {
+    /* first check header chunk identifier and chunk length */
+    fgets(chunk, CHUNK_ID_LEN + 1, file);
+    chunk_length =
+      (fgetc(file)<<24) | (fgetc(file)<<16) | (fgetc(file)<<8) | fgetc(file);
+
+    if (strcmp(chunk, "HEAD") || chunk_length != TAPE_HEADER_SIZE)

     {
     {

-      Error(ERR_WARN, "wrong format of level recording file '%s'", filename);
+      Error(ERR_WARN, "wrong 'HEAD' chunk of tape file '%s'", filename);

       fclose(file);
       fclose(file);

-      file = NULL;
+      return;

     }
   }
 
     }
   }
 

-  if (!file)
-    return;
-

   tape.random_seed =
     (fgetc(file)<<24) | (fgetc(file)<<16) | (fgetc(file)<<8) | fgetc(file);
   tape.date =
   tape.random_seed =
     (fgetc(file)<<24) | (fgetc(file)<<16) | (fgetc(file)<<8) | fgetc(file);
   tape.date =


@@ -323,6 +494,28 @@ void LoadTape(int level_nr)
   tape.length =
     (fgetc(file)<<24) | (fgetc(file)<<16) | (fgetc(file)<<8) | fgetc(file);
 
   tape.length =
     (fgetc(file)<<24) | (fgetc(file)<<16) | (fgetc(file)<<8) | fgetc(file);
 

+  /* read header fields that are new since version 1.2 */
+  if (file_version >= FILE_VERSION_1_2)
+  {
+    byte store_participating_players = fgetc(file);
+
+    for(i=0; i<TAPE_HEADER_UNUSED; i++)                /* skip unused header bytes */
+      fgetc(file);
+
+    /* since version 1.2, tapes store which players participate in the tape */
+    num_participating_players = 0;
+    for(i=0; i<MAX_PLAYERS; i++)
+    {
+      tape.player_participates[i] = FALSE;
+
+      if (store_participating_players & (1 << i))
+      {
+       tape.player_participates[i] = TRUE;
+       num_participating_players++;
+      }
+    }
+  }
+

   tape.level_nr = level_nr;
   tape.counter = 0;
   tape.changed = FALSE;
   tape.level_nr = level_nr;
   tape.counter = 0;
   tape.changed = FALSE;


@@ -331,26 +524,38 @@ void LoadTape(int level_nr)
   tape.playing = FALSE;
   tape.pausing = FALSE;
 
   tape.playing = FALSE;
   tape.pausing = FALSE;
 

-  for(i=0; i<tape.length; i++)
+  /* read chunk "BODY" */
+  if (file_version >= FILE_VERSION_1_2)

   {
   {

-    int j;
+    /* next check body chunk identifier and chunk length */
+    fgets(chunk, CHUNK_ID_LEN + 1, file);
+    chunk_length =
+      (fgetc(file)<<24) | (fgetc(file)<<16) | (fgetc(file)<<8) | fgetc(file);
+    if (strcmp(chunk, "BODY") ||
+       chunk_length != (num_participating_players + 1) * tape.length)
+    {
+      Error(ERR_WARN, "wrong 'BODY' chunk of tape file '%s'", filename);
+      fclose(file);
+      return;
+    }
+  }

 
 

+  for(i=0; i<tape.length; i++)
+  {

     if (i >= MAX_TAPELEN)
       break;
 
     for(j=0; j<MAX_PLAYERS; j++)
     {
     if (i >= MAX_TAPELEN)
       break;
 
     for(j=0; j<MAX_PLAYERS; j++)
     {

-      if (levelrec_10 && j > 0)
-      {
-       tape.pos[i].action[j] = MV_NO_MOVING;
-       continue;
-      }
-      tape.pos[i].action[j] = fgetc(file);
+      tape.pos[i].action[j] = MV_NO_MOVING;
+
+      if (tape.player_participates[j])
+       tape.pos[i].action[j] = fgetc(file);

     }
 
     tape.pos[i].delay = fgetc(file);
 
     }
 
     tape.pos[i].delay = fgetc(file);
 

-    if (levelrec_10)
+    if (file_version == FILE_VERSION_1_0)

     {
       /* eliminate possible diagonal moves in old tapes */
       /* this is only for backward compatibility */
     {
       /* eliminate possible diagonal moves in old tapes */
       /* this is only for backward compatibility */


@@ -393,98 +598,129 @@ void LoadTape(int level_nr)
 void SaveTape(int level_nr)
 {
   int i;
 void SaveTape(int level_nr)
 {
   int i;

-  char filename[MAX_FILENAME_LEN];
+  char *filename = getTapeFilename(level_nr);

   FILE *file;
   boolean new_tape = TRUE;
   FILE *file;
   boolean new_tape = TRUE;

+  byte store_participating_players;
+  int num_participating_players;
+  int chunk_length;

 
   InitTapeDirectory(leveldir[leveldir_nr].filename);
 
 
   InitTapeDirectory(leveldir[leveldir_nr].filename);
 

-  sprintf(filename, "%s/%d.%s",
-         getTapeDir(leveldir[leveldir_nr].filename),
-         level_nr, TAPEFILE_EXTENSION);
-

   /* if a tape still exists, ask to overwrite it */
   /* if a tape still exists, ask to overwrite it */

-  if ((file = fopen(filename, "r")))
+  if (access(filename, F_OK) == 0)

   {
     new_tape = FALSE;
   {
     new_tape = FALSE;

-    fclose(file);
-

     if (!Request("Replace old tape ?", REQ_ASK))
       return;
   }
 
     if (!Request("Replace old tape ?", REQ_ASK))
       return;
   }
 

+  /* count number of players and set corresponding bits for compact storage */
+  store_participating_players = 0;
+  num_participating_players = 0;
+  for(i=0; i<MAX_PLAYERS; i++)
+  {
+    if (tape.player_participates[i])
+    {
+      num_participating_players++;
+      store_participating_players |= (1 << i);
+    }
+  }
+

   if (!(file = fopen(filename, "w")))
   {
     Error(ERR_WARN, "cannot save level recording file '%s'", filename);
     return;
   }
 
   if (!(file = fopen(filename, "w")))
   {
     Error(ERR_WARN, "cannot save level recording file '%s'", filename);
     return;
   }
 

-  fputs(LEVELREC_COOKIE, file);                /* Formatkennung */
-  fputc(0x0a, file);
+  fputs(TAPE_COOKIE, file);            /* file identifier */
+  fputc('\n', file);
+
+  fputs("HEAD", file);                 /* chunk identifier for file header */
+
+  chunk_length = TAPE_HEADER_SIZE;
+
+  fputc((chunk_length >>  24) & 0xff, file);
+  fputc((chunk_length >>  16) & 0xff, file);
+  fputc((chunk_length >>   8) & 0xff, file);
+  fputc((chunk_length >>   0) & 0xff, file);
+
+  fputc((tape.random_seed >> 24) & 0xff, file);
+  fputc((tape.random_seed >> 16) & 0xff, file);
+  fputc((tape.random_seed >>  8) & 0xff, file);
+  fputc((tape.random_seed >>  0) & 0xff, file);
+
+  fputc((tape.date >>  24) & 0xff, file);
+  fputc((tape.date >>  16) & 0xff, file);
+  fputc((tape.date >>   8) & 0xff, file);
+  fputc((tape.date >>   0) & 0xff, file);

 
 

-  fputc((tape.random_seed >> 24) & 0xff,file);
-  fputc((tape.random_seed >> 16) & 0xff,file);
-  fputc((tape.random_seed >>  8) & 0xff,file);
-  fputc((tape.random_seed >>  0) & 0xff,file);
+  fputc((tape.length >>  24) & 0xff, file);
+  fputc((tape.length >>  16) & 0xff, file);
+  fputc((tape.length >>   8) & 0xff, file);
+  fputc((tape.length >>   0) & 0xff, file);

 
 

-  fputc((tape.date >>  24) & 0xff,file);
-  fputc((tape.date >>  16) & 0xff,file);
-  fputc((tape.date >>   8) & 0xff,file);
-  fputc((tape.date >>   0) & 0xff,file);
+  fputc(store_participating_players, file);

 
 

-  fputc((tape.length >>  24) & 0xff,file);
-  fputc((tape.length >>  16) & 0xff,file);
-  fputc((tape.length >>   8) & 0xff,file);
-  fputc((tape.length >>   0) & 0xff,file);
+  for(i=0; i<TAPE_HEADER_UNUSED; i++)  /* set unused header bytes to zero */
+    fputc(0, file);
+
+  fputs("BODY", file);                 /* chunk identifier for file body */
+  chunk_length = (num_participating_players + 1) * tape.length;
+
+  fputc((chunk_length >>  24) & 0xff, file);
+  fputc((chunk_length >>  16) & 0xff, file);
+  fputc((chunk_length >>   8) & 0xff, file);
+  fputc((chunk_length >>   0) & 0xff, file);

 
   for(i=0; i<tape.length; i++)
   {
     int j;
 
     for(j=0; j<MAX_PLAYERS; j++)
 
   for(i=0; i<tape.length; i++)
   {
     int j;
 
     for(j=0; j<MAX_PLAYERS; j++)

-      fputc(tape.pos[i].action[j], file);
+      if (tape.player_participates[j])
+       fputc(tape.pos[i].action[j], file);

 
     fputc(tape.pos[i].delay, file);
   }
 
   fclose(file);
 
 
     fputc(tape.pos[i].delay, file);
   }
 
   fclose(file);
 

-  chmod(filename, LEVREC_PERMS);
+  chmod(filename, TAPE_PERMS);

 
   tape.changed = FALSE;
 
   if (new_tape)
 
   tape.changed = FALSE;
 
   if (new_tape)

-    Request("tape saved !",REQ_CONFIRM);
+    Request("tape saved !", REQ_CONFIRM);

 }
 
 void LoadScore(int level_nr)
 {
   int i;
 }
 
 void LoadScore(int level_nr)
 {
   int i;

-  char filename[MAX_FILENAME_LEN];
-  char cookie[MAX_FILENAME_LEN];
+  char *filename = getScoreFilename(level_nr);
+  char cookie[MAX_LINE_LEN];

   char line[MAX_LINE_LEN];
   char *line_ptr;
   FILE *file;
 
   char line[MAX_LINE_LEN];
   char *line_ptr;
   FILE *file;
 

-  /* start with empty score table */
+  /* always start with reliable default values */

   for(i=0; i<MAX_SCORE_ENTRIES; i++)
   {
   for(i=0; i<MAX_SCORE_ENTRIES; i++)
   {

-    strcpy(highscore[i].Name, EMPTY_ALIAS);
+    strcpy(highscore[i].Name, EMPTY_PLAYER_NAME);

     highscore[i].Score = 0;
   }
 
     highscore[i].Score = 0;
   }
 

-  sprintf(filename, "%s/%d.%s",
-         getScoreDir(leveldir[leveldir_nr].filename),
-         level_nr, SCOREFILE_EXTENSION);
-

   if (!(file = fopen(filename, "r")))
     return;
 
   if (!(file = fopen(filename, "r")))
     return;
 

-  fgets(cookie, SCORE_COOKIE_LEN, file);
+  /* check file identifier */
+  fgets(cookie, MAX_LINE_LEN, file);
+  if (strlen(cookie) > 0 && cookie[strlen(cookie) - 1] == '\n')
+    cookie[strlen(cookie) - 1] = '\0';

 
   if (strcmp(cookie, SCORE_COOKIE) != 0)
   {
 
   if (strcmp(cookie, SCORE_COOKIE) != 0)
   {

-    Error(ERR_WARN, "wrong format of score file '%s'", filename);
+    Error(ERR_WARN, "wrong file identifier of score file '%s'", filename);

     fclose(file);
     return;
   }
     fclose(file);
     return;
   }


@@ -514,15 +750,11 @@ void LoadScore(int level_nr)
 void SaveScore(int level_nr)
 {
   int i;
 void SaveScore(int level_nr)
 {
   int i;

-  char filename[MAX_FILENAME_LEN];
+  char *filename = getScoreFilename(level_nr);

   FILE *file;
 
   InitScoreDirectory(leveldir[leveldir_nr].filename);
 
   FILE *file;
 
   InitScoreDirectory(leveldir[leveldir_nr].filename);
 

-  sprintf(filename, "%s/%d.%s",
-         getScoreDir(leveldir[leveldir_nr].filename),
-         level_nr, SCOREFILE_EXTENSION);
-

   if (!(file = fopen(filename, "w")))
   {
     Error(ERR_WARN, "cannot save score for level %d", level_nr);
   if (!(file = fopen(filename, "w")))
   {
     Error(ERR_WARN, "cannot save score for level %d", level_nr);


@@ -804,7 +1036,7 @@ static struct SetupFileList *loadSetupFileList(char *filename)
 
   if (!(file = fopen(filename, "r")))
   {
 
   if (!(file = fopen(filename, "r")))
   {

-    Error(ERR_WARN, "cannot open setup/info file '%s'", filename);
+    Error(ERR_WARN, "cannot open configuration file '%s'", filename);

     return NULL;
   }
 
     return NULL;
   }
 


@@ -873,7 +1105,7 @@ static struct SetupFileList *loadSetupFileList(char *filename)
   freeSetupFileList(setup_file_list);
 
   if (first_valid_list_entry == NULL)
   freeSetupFileList(setup_file_list);
 
   if (first_valid_list_entry == NULL)

-    Error(ERR_WARN, "setup/info file '%s' is empty", filename);
+    Error(ERR_WARN, "configuration file '%s' is empty", filename);

 
   return first_valid_list_entry;
 }
 
   return first_valid_list_entry;
 }


@@ -888,7 +1120,7 @@ static void checkSetupFileListIdentifier(struct SetupFileList *setup_file_list,
   {
     if (strcmp(setup_file_list->value, identifier) != 0)
     {
   {
     if (strcmp(setup_file_list->value, identifier) != 0)
     {

-      Error(ERR_WARN, "setup/info file has wrong version");
+      Error(ERR_WARN, "configuration file has wrong version");

       return;
     }
     else
       return;
     }
     else


@@ -899,7 +1131,7 @@ static void checkSetupFileListIdentifier(struct SetupFileList *setup_file_list,
     checkSetupFileListIdentifier(setup_file_list->next, identifier);
   else
   {
     checkSetupFileListIdentifier(setup_file_list->next, identifier);
   else
   {

-    Error(ERR_WARN, "setup/info file has no version information");
+    Error(ERR_WARN, "configuration file has no version information");

     return;
   }
 }
     return;
   }
 }


@@ -919,16 +1151,16 @@ static void setSetupInfoToDefaults(struct SetupInfo *si)
   si->player_name = getStringCopy(getLoginName());
 
   si->sound = TRUE;
   si->player_name = getStringCopy(getLoginName());
 
   si->sound = TRUE;

-  si->sound_loops = FALSE;
-  si->sound_music = FALSE;
-  si->sound_simple = FALSE;
+  si->sound_loops = TRUE;
+  si->sound_music = TRUE;
+  si->sound_simple = TRUE;

   si->toons = TRUE;
   si->double_buffering = TRUE;
   si->direct_draw = !si->double_buffering;
   si->toons = TRUE;
   si->double_buffering = TRUE;
   si->direct_draw = !si->double_buffering;

-  si->scroll_delay = FALSE;
+  si->scroll_delay = TRUE;

   si->soft_scrolling = TRUE;
   si->fading = FALSE;
   si->soft_scrolling = TRUE;
   si->fading = FALSE;

-  si->autorecord = FALSE;
+  si->autorecord = TRUE;

   si->quick_doors = FALSE;
 
   for (i=0; i<MAX_PLAYERS; i++)
   si->quick_doors = FALSE;
 
   for (i=0; i<MAX_PLAYERS; i++)


@@ -1092,7 +1324,10 @@ static int LoadLevelInfoFromLevelDir(char *level_directory, int start_entry)
   int i, current_entry = start_entry;
 
   if ((dir = opendir(level_directory)) == NULL)
   int i, current_entry = start_entry;
 
   if ((dir = opendir(level_directory)) == NULL)

-    Error(ERR_EXIT, "cannot read level directory '%s'", level_directory);
+  {
+    Error(ERR_WARN, "cannot read level directory '%s'", level_directory);
+    return current_entry;
+  }

 
   while (current_entry < MAX_LEVDIR_ENTRIES)
   {
 
   while (current_entry < MAX_LEVDIR_ENTRIES)
   {


@@ -1113,13 +1348,6 @@ static int LoadLevelInfoFromLevelDir(char *level_directory, int start_entry)
       continue;
     }
 
       continue;
     }
 

-    if (strlen(dir_entry->d_name) >= MAX_LEVDIR_FILENAME)
-    {
-      Error(ERR_WARN, "filename of level directory '%s' too long -- ignoring",
-           dir_entry->d_name);
-      continue;
-    }
-

     filename = getPath2(directory, LEVELINFO_FILENAME);
     setup_file_list = loadSetupFileList(filename);
 
     filename = getPath2(directory, LEVELINFO_FILENAME);
     setup_file_list = loadSetupFileList(filename);
 


@@ -1153,8 +1381,8 @@ static int LoadLevelInfoFromLevelDir(char *level_directory, int start_entry)
 
   closedir(dir);
 
 
   closedir(dir);
 

-  if (current_entry == start_entry && start_entry != -1)
-    Error(ERR_EXIT, "cannot find any valid level series in directory '%s'",
+  if (current_entry == start_entry)
+    Error(ERR_WARN, "cannot find any valid level series in directory '%s'",

          level_directory);
 
   return current_entry;
          level_directory);
 
   return current_entry;


@@ -1171,6 +1399,10 @@ void LoadLevelInfo()
                                            num_leveldirs);
   num_leveldirs = LoadLevelInfoFromLevelDir(getUserLevelDir(""),
                                            num_leveldirs);
                                            num_leveldirs);
   num_leveldirs = LoadLevelInfoFromLevelDir(getUserLevelDir(""),
                                            num_leveldirs);

+
+  if (num_leveldirs == 0)
+    Error(ERR_EXIT, "cannot find any valid level series in any directory");
+

   if (num_leveldirs > 1)
     qsort(leveldir, num_leveldirs, sizeof(struct LevelDirInfo),
          compareLevelDirInfoEntries);
   if (num_leveldirs > 1)
     qsort(leveldir, num_leveldirs, sizeof(struct LevelDirInfo),
          compareLevelDirInfoEntries);


@@ -1178,16 +1410,16 @@ void LoadLevelInfo()
 
 static void SaveUserLevelInfo()
 {
 
 static void SaveUserLevelInfo()
 {

-  char filename[MAX_FILENAME_LEN];
+  char *filename;

   FILE *file;
   int i;
 
   FILE *file;
   int i;
 

-  sprintf(filename, "%s/%s",
-         getUserLevelDir(getLoginName()), LEVELINFO_FILENAME);
+  filename = getPath2(getUserLevelDir(getLoginName()), LEVELINFO_FILENAME);

 
   if (!(file = fopen(filename, "w")))
   {
     Error(ERR_WARN, "cannot write level info file '%s'", filename);
 
   if (!(file = fopen(filename, "w")))
   {
     Error(ERR_WARN, "cannot write level info file '%s'", filename);

+    free(filename);

     return;
   }
 
     return;
   }
 


@@ -1203,19 +1435,20 @@ static void SaveUserLevelInfo()
     fprintf(file, "%s\n", getSetupLine("", i));
 
   fclose(file);
     fprintf(file, "%s\n", getSetupLine("", i));
 
   fclose(file);

+  free(filename);

 
   chmod(filename, SETUP_PERMS);
 }
 
 void LoadSetup()
 {
 
   chmod(filename, SETUP_PERMS);
 }
 
 void LoadSetup()
 {

-  char filename[MAX_FILENAME_LEN];
+  char *filename;

   struct SetupFileList *setup_file_list = NULL;
 
   struct SetupFileList *setup_file_list = NULL;
 

-  /* always start with reliable default setup values */
+  /* always start with reliable default values */

   setSetupInfoToDefaults(&setup);
 
   setSetupInfoToDefaults(&setup);
 

-  sprintf(filename, "%s/%s", getSetupDir(), SETUP_FILENAME);
+  filename = getPath2(getSetupDir(), SETUP_FILENAME);

 
   setup_file_list = loadSetupFileList(filename);
 
 
   setup_file_list = loadSetupFileList(filename);
 


@@ -1242,6 +1475,8 @@ void LoadSetup()
   }
   else
     Error(ERR_WARN, "using default setup values");
   }
   else
     Error(ERR_WARN, "using default setup values");

+
+  free(filename);

 }
 
 static char *getSetupLine(char *prefix, int token_nr)
 }
 
 static char *getSetupLine(char *prefix, int token_nr)


@@ -1310,16 +1545,17 @@ static char *getSetupLine(char *prefix, int token_nr)
 void SaveSetup()
 {
   int i, pnr;
 void SaveSetup()
 {
   int i, pnr;

-  char filename[MAX_FILENAME_LEN];
+  char *filename;

   FILE *file;
 
   InitUserDataDirectory();
 
   FILE *file;
 
   InitUserDataDirectory();
 

-  sprintf(filename, "%s/%s", getSetupDir(), SETUP_FILENAME);
+  filename = getPath2(getSetupDir(), SETUP_FILENAME);

 
   if (!(file = fopen(filename, "w")))
   {
     Error(ERR_WARN, "cannot write setup file '%s'", filename);
 
   if (!(file = fopen(filename, "w")))
   {
     Error(ERR_WARN, "cannot write setup file '%s'", filename);

+    free(filename);

     return;
   }
 
     return;
   }
 


@@ -1352,20 +1588,20 @@ void SaveSetup()
   }
 
   fclose(file);
   }
 
   fclose(file);

+  free(filename);

 
   chmod(filename, SETUP_PERMS);
 }
 
 void LoadLevelSetup()
 {
 
   chmod(filename, SETUP_PERMS);
 }
 
 void LoadLevelSetup()
 {

-  char filename[MAX_FILENAME_LEN];
-
-  /* always start with reliable default setup values */
+  char *filename;

 
 

+  /* always start with reliable default values */

   leveldir_nr = 0;
   level_nr = 0;
 
   leveldir_nr = 0;
   level_nr = 0;
 

-  sprintf(filename, "%s/%s", getSetupDir(), LEVELSETUP_FILENAME);
+  filename = getPath2(getSetupDir(), LEVELSETUP_FILENAME);

 
   if (level_setup_list)
     freeSetupFileList(level_setup_list);
 
   if (level_setup_list)
     freeSetupFileList(level_setup_list);


@@ -1388,11 +1624,13 @@ void LoadLevelSetup()
                                        LEVELSETUP_COOKIE);
     Error(ERR_WARN, "using default setup values");
   }
                                        LEVELSETUP_COOKIE);
     Error(ERR_WARN, "using default setup values");
   }

+
+  free(filename);

 }
 
 void SaveLevelSetup()
 {
 }
 
 void SaveLevelSetup()
 {

-  char filename[MAX_FILENAME_LEN];
+  char *filename;

   struct SetupFileList *list_entry = level_setup_list;
   FILE *file;
 
   struct SetupFileList *list_entry = level_setup_list;
   FILE *file;
 


@@ -1404,11 +1642,12 @@ void SaveLevelSetup()
   setTokenValue(level_setup_list,
                leveldir[leveldir_nr].filename, int2str(level_nr, 0));
 
   setTokenValue(level_setup_list,
                leveldir[leveldir_nr].filename, int2str(level_nr, 0));
 

-  sprintf(filename, "%s/%s", getSetupDir(), LEVELSETUP_FILENAME);
+  filename = getPath2(getSetupDir(), LEVELSETUP_FILENAME);

 
   if (!(file = fopen(filename, "w")))
   {
     Error(ERR_WARN, "cannot write setup file '%s'", filename);
 
   if (!(file = fopen(filename, "w")))
   {
     Error(ERR_WARN, "cannot write setup file '%s'", filename);

+    free(filename);

     return;
   }
 
     return;
   }
 


@@ -1428,6 +1667,67 @@ void SaveLevelSetup()
   }
 
   fclose(file);
   }
 
   fclose(file);

+  free(filename);

 
   chmod(filename, SETUP_PERMS);
 }
 
   chmod(filename, SETUP_PERMS);
 }

+
+#ifdef MSDOS
+static boolean initErrorFile()
+{
+  char *filename;
+  FILE *error_file;
+
+  InitUserDataDirectory();
+
+  filename = getPath2(getUserDataDir(), ERROR_FILENAME);
+  error_file = fopen(filename, "w");
+  free(filename);
+
+  if (error_file == NULL)
+    return FALSE;
+
+  fclose(error_file);
+
+  return TRUE;
+}
+
+FILE *openErrorFile()
+{
+  static boolean first_access = TRUE;
+  char *filename;
+  FILE *error_file;
+
+  if (first_access)
+  {
+    if (!initErrorFile())
+      return NULL;
+
+    first_access = FALSE;
+  }
+
+  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