#include "tape.h"
#include "joystick.h"
-#define MAX_LINE_LEN 1000
+#define MAX_LINE_LEN 1000 /* file 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 */
static void SaveUserLevelInfo(); /* for 'InitUserLevelDir()' */
static char *getSetupLine(char *, int); /* for 'SaveUserLevelInfo()' */
}
}
+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<MAX_LEVSCORE_ENTRIES; 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;
char filename[MAX_FILENAME_LEN];
- char cookie[MAX_FILENAME_LEN];
+ 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;
+ /* always start with reliable default values */
+ setLevelInfoToDefaults();
+
if (leveldir[leveldir_nr].user_defined)
sprintf(filename, "%s/%s/%d",
getUserLevelDir(""), leveldir[leveldir_nr].filename, level_nr);
options.level_directory, leveldir[leveldir_nr].filename, level_nr);
if (!(file = fopen(filename, "r")))
+ {
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);
- 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(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<MAX_LEVNAMLEN; i++)
+ level.name[i] = fgetc(file);
+ level.name[MAX_LEVNAMLEN - 1] = 0;
- fclose(file);
+ for(i=0; i<MAX_LEVSCORE_ENTRIES; i++)
+ level.score[i] = fgetc(file);
- if (level.time <= 10) /* Mindestspieldauer */
- level.time = 10;
- }
- else
+ 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<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;
char filename[MAX_FILENAME_LEN];
FILE *file;
+ int chunk_length;
if (leveldir[leveldir_nr].user_defined)
sprintf(filename, "%s/%s/%d",
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.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);
+ 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);
void LoadTape(int level_nr)
{
- int i;
+ int i, j;
char filename[MAX_FILENAME_LEN];
- char cookie[MAX_FILENAME_LEN];
+ char cookie[MAX_LINE_LEN];
+ char chunk[CHUNK_ID_LEN + 1];
FILE *file;
- boolean levelrec_10 = FALSE;
+ boolean player_participates[MAX_PLAYERS];
+ int num_participating_players;
+ int file_version = FILE_VERSION_1_2; /* last version of tape files */
+ int chunk_length;
sprintf(filename, "%s/%d.%s",
getTapeDir(leveldir[leveldir_nr].filename),
level_nr, TAPEFILE_EXTENSION);
- if ((file = fopen(filename, "r")))
+ if (!(file = fopen(filename, "r")))
+ 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, 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);
- file = NULL;
+ return;
}
}
- if (!file)
- return;
-
tape.random_seed =
(fgetc(file)<<24) | (fgetc(file)<<16) | (fgetc(file)<<8) | fgetc(file);
tape.date =
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);
+
+ /* check which players participate in this tape recording */
+ num_participating_players = 0;
+ for(i=0; i<MAX_PLAYERS; i++)
+ {
+ player_participates[i] = FALSE;
+
+ if (store_participating_players & (1 << i))
+ {
+ player_participates[i] = TRUE;
+ num_participating_players++;
+ }
+ }
+ }
+
tape.level_nr = level_nr;
tape.counter = 0;
tape.changed = 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 (levelrec_10 && j > 0)
- {
- tape.pos[i].action[j] = MV_NO_MOVING;
+ tape.pos[i].action[j] = MV_NO_MOVING;
+
+ /* pre-1.2 tapes store data for only one player */
+ if (file_version == FILE_VERSION_1_0 && j > 0)
continue;
- }
- tape.pos[i].action[j] = fgetc(file);
+
+ if (player_participates[j])
+ tape.pos[i].action[j] = 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 */
void SaveTape(int level_nr)
{
- int i;
+ int i, j;
char filename[MAX_FILENAME_LEN];
FILE *file;
boolean new_tape = TRUE;
+ boolean player_participates[MAX_PLAYERS];
+ byte store_participating_players;
+ int num_participating_players;
+ int chunk_length;
InitTapeDirectory(leveldir[leveldir_nr].filename);
return;
}
+ for(i=0; i<MAX_PLAYERS; i++)
+ player_participates[i] = FALSE;
+
+ /* check which players participate in this tape recording */
+ for(i=0; i<tape.length; i++)
+ for(j=0; j<MAX_PLAYERS; j++)
+ if (tape.pos[i].action[j] != 0)
+ player_participates[j] = TRUE;
+
+ /* 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 (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;
}
- 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((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((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.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((tape.length >> 24) & 0xff, file);
+ fputc((tape.length >> 16) & 0xff, file);
+ fputc((tape.length >> 8) & 0xff, file);
+ fputc((tape.length >> 0) & 0xff, file);
+
+ fputc(store_participating_players, 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++)
- fputc(tape.pos[i].action[j], file);
+ if (player_participates[j])
+ fputc(tape.pos[i].action[j], file);
fputc(tape.pos[i].delay, file);
}
tape.changed = FALSE;
if (new_tape)
- Request("tape saved !",REQ_CONFIRM);
+ Request("tape saved !", REQ_CONFIRM);
}
void LoadScore(int level_nr)
{
int i;
char filename[MAX_FILENAME_LEN];
- char cookie[MAX_FILENAME_LEN];
+ char cookie[MAX_LINE_LEN];
char line[MAX_LINE_LEN];
char *line_ptr;
FILE *file;
if (!(file = fopen(filename, "r")))
return;
- fgets(cookie, SCORE_COOKIE_LEN, file);
+ /* check file identifier */
+ fgets(cookie, MAX_LINE_LEN, file);
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;
}
char filename[MAX_FILENAME_LEN];
struct SetupFileList *setup_file_list = NULL;
- /* always start with reliable default setup values */
+ /* always start with reliable default values */
setSetupInfoToDefaults(&setup);
sprintf(filename, "%s/%s", getSetupDir(), SETUP_FILENAME);
{
char filename[MAX_FILENAME_LEN];
- /* always start with reliable default setup values */
-
+ /* always start with reliable default values */
leveldir_nr = 0;
level_nr = 0;