| NovaCoder |
21 September 2013 14:48 |
Wolfenstein 3D just dumps all the objects to disk as binary in a single file, then reading it back is just the opposite.
This kind of thing:
Code:
int SaveTheGame(char *fn, char *tag, int x, int y)
{
int fd;
int i;
objtype *ob, nullobj;
long checksum;
fd = OpenWrite(fn);
if (fd == -1) {
Message(STR_NOSPACE1"\n"
STR_NOSPACE2);
IN_ClearKeysDown();
IN_Ack();
return -1;
}
// write savegame header
WriteBytes(fd, (byte *)GAMEHDR, 8);
WriteBytes(fd, (byte *)SAVTYPE, 4);
WriteInt32(fd, 0xFFFFFFFF); // write version
WriteBytes(fd, (byte *)GAMETYPE, 4);
WriteInt32(fd, time(NULL));
WriteInt32(fd, 0x00000000);
WriteInt32(fd, 0x00000000);
WriteBytes(fd, (byte *)tag, 32); // write savegame name
checksum = 0;
DiskFlopAnim(x,y);
//WriteBytes(fd, (byte *)&gamestate, sizeof(gamestate));
WriteInt32(fd, gamestate.difficulty);
WriteInt32(fd, gamestate.mapon);
WriteInt32(fd, gamestate.oldscore);
WriteInt32(fd, gamestate.score);
WriteInt32(fd, gamestate.nextextra);
WriteInt32(fd, gamestate.lives);
WriteInt32(fd, gamestate.health);
WriteInt32(fd, gamestate.ammo);
WriteInt32(fd, gamestate.keys);
WriteInt32(fd, gamestate.bestweapon);
WriteInt32(fd, gamestate.weapon);
WriteInt32(fd, gamestate.chosenweapon);
WriteInt32(fd, gamestate.faceframe);
WriteInt32(fd, gamestate.attackframe);
WriteInt32(fd, gamestate.attackcount);
WriteInt32(fd, gamestate.weaponframe);
WriteInt32(fd, gamestate.episode);
WriteInt32(fd, gamestate.secretcount);
WriteInt32(fd, gamestate.treasurecount);
WriteInt32(fd, gamestate.killcount);
WriteInt32(fd, gamestate.secrettotal);
WriteInt32(fd, gamestate.treasuretotal);
WriteInt32(fd, gamestate.killtotal);
WriteInt32(fd, gamestate.TimeCount);
WriteInt32(fd, gamestate.killx);
WriteInt32(fd, gamestate.killy);
WriteInt8(fd, gamestate.victoryflag);
checksum = DoChecksum((byte*)&gamestate, sizeof(gamestate), checksum);
DiskFlopAnim(x,y);
#ifdef SPEAR
for (i = 0; i < 20; i++)
#else
for (i = 0; i < 8; i++)
#endif
{
//WriteBytes(fd, (byte *)&LevelRatios[i], sizeof(LRstruct));
WriteInt32(fd, LevelRatios[i].kill);
WriteInt32(fd, LevelRatios[i].secret);
WriteInt32(fd, LevelRatios[i].treasure);
WriteInt32(fd, LevelRatios[i].time);
checksum = DoChecksum((byte*)&LevelRatios[i], sizeof(LRstruct), checksum);
}
Code:
int LoadTheGame(char *fn, int x, int y)
{
int fd;
int i;
long checksum, oldchecksum;
objtype nullobj;
fd = OpenRead(fn);
if (fd == -1)
goto openfail;
ReadSeek(fd, 64, SEEK_SET);
checksum = 0;
DiskFlopAnim(x,y);
//ReadBytes(fd, (byte *)&gamestate, sizeof(gamestate));
gamestate.difficulty = ReadInt32(fd);
gamestate.mapon = ReadInt32(fd);
gamestate.oldscore = ReadInt32(fd);
gamestate.score = ReadInt32(fd);
gamestate.nextextra = ReadInt32(fd);
gamestate.lives = ReadInt32(fd);
gamestate.health = ReadInt32(fd);
gamestate.ammo = ReadInt32(fd);
gamestate.keys = ReadInt32(fd);
gamestate.bestweapon = ReadInt32(fd);
gamestate.weapon = ReadInt32(fd);
gamestate.chosenweapon = ReadInt32(fd);
gamestate.faceframe = ReadInt32(fd);
gamestate.attackframe = ReadInt32(fd);
gamestate.attackcount = ReadInt32(fd);
gamestate.weaponframe = ReadInt32(fd);
gamestate.episode = ReadInt32(fd);
gamestate.secretcount = ReadInt32(fd);
gamestate.treasurecount = ReadInt32(fd);
gamestate.killcount = ReadInt32(fd);
gamestate.secrettotal = ReadInt32(fd);
gamestate.treasuretotal = ReadInt32(fd);
gamestate.killtotal = ReadInt32(fd);
gamestate.TimeCount = ReadInt32(fd);
gamestate.killx = ReadInt32(fd);
gamestate.killy = ReadInt32(fd);
gamestate.victoryflag = ReadInt8(fd);
checksum = DoChecksum((byte*)&gamestate,sizeof(gamestate),checksum);
DiskFlopAnim(x,y);
#ifdef SPEAR
for (i = 0; i < 20; i++)
#else
for (i = 0; i < 8; i++)
#endif
{
//ReadBytes(fd, (byte *)&LevelRatios[i], sizeof(LRstruct));
LevelRatios[i].kill = ReadInt32(fd);
LevelRatios[i].secret = ReadInt32(fd);
LevelRatios[i].treasure = ReadInt32(fd);
LevelRatios[i].time = ReadInt32(fd);
checksum = DoChecksum((byte*)&LevelRatios[i], sizeof(LRstruct), checksum);
}
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