TR4

original research by sapper, minor improvements by zdimension

struct tr4_savegame
{
    uint8_t LevelName[40]; // CP437 C string; null-terminated (data after \0 is ignored)
    uint8_t unknown1[35];
    int32_t SaveNumber;
    uint16_t Days;
    uint16_t Hours;
    uint16_t Minutes;
    uint16_t Seconds;
    int16_t LaraIndex;
    int16_t LaraArmAction;
    int16_t CurrentItemInHand;
    int16_t ChangeToItemInHand;
    int16_t ActiveWeapon;
    uint8_t unknown2[6];
    int16_t LaraAir;
    uint8_t unknown3[20];
    int16_t WeaponOnBack;
    uint8_t unknown3b[2];
    int16_t LaraPoison1;
    int16_t LaraPoison2;
    uint8_t unknown3a[16];
    uint8_t LaraSpecialStatus; // 0x4 = Normal; 0xC = Burning Lara; Anything other = save doesn't appear
    uint8_t unknown4[95];
    int16_t LaraFacing; // Matches data for item below
    uint8_t unknown4a[108];
    uint8_t Pistols; // 0 = missing; 9 = present
    uint8_t Uzis; // 0 = missing; 1 = present
    uint8_t Shotgun; // 0 = missing; 9 = present
    uint8_t Crossbow; // 0 = missing; 9 = present; 13 = combined with lasersight
    uint8_t GrenadeGun; // 0 = missing; 9 = present
    uint8_t Revolver; // 0 = missing; 1 = present; 5 = combined with lasersight
    uint8_t LaserSight; // 0 = missing or combined; 1 = present separated
    uint8_t Binoculars;
    uint8_t Crowbar;
    uint8_t MechanicalScarab;
    uint8_t SmallWaterSkin;
    int8_t LargeWaterSkin;
    uint8_t Examine[3];
    uint8_t PuzzleItems[12];
    uint8_t PuzzleItem1_4Combo;
    uint8_t PuzzleItem5_8Combo;
    uint8_t KeyItem1_8;
    uint8_t KeyItem9_12;
    uint8_t KeyItem1_4Combo;
    uint8_t KeyItem5_8Combo;
    uint8_t PickupItem1_4;
    uint8_t unknown5;
    uint8_t PickupItem1_4Combo;
    uint8_t unknown6;
    uint8_t QuestItem1_6;
    uint8_t unknown7;
    int16_t SmallMediPacks; // 65535 means unlimited
    int16_t LargeMediPacks; // 65535 means unlimited
    int16_t Flares; // 65535 means unlimited
    int16_t PistolAmmo;
    int16_t UziAmmo;
    int16_t RevolverAmmo;
    int16_t ShotgunAmmo[2]; // normal; wide, divide by 6 for real value
    int16_t GrenadeAmmo[3]; // normal; super; flash
    int16_t CrossbowAmmo[3]; // normal; poison; explosive
    int16_t MEchanicalScarabRemaining;
    uint8_t unknown8[57];
    uint8_t LevelNumber;
    uint8_t unknown9; // clock??
    uint32_t TimeTaken; // in game ticks (1/30th of a second), so divide by 30 for time in seconds
    uint32_t DistanceTravelled; // Divide by 419.15 for value in meters
    int32_t AmmoUsed;
    int32_t Hits;
    uint8_t unknown10[2];
    uint8_t Secrets;
    uint8_t HealthPacksUsed;
    uint8_t unknown11[16];
    uint16_t Kills;
    uint8_t unknown11a[11];
    struct
    {
        uint8_t unused;
        uint8_t blue;
        uint8_t green;
        uint8_t red;
    } FogColour;
    int8_t AutoAimingForEnemy;
    uint8_t unknown12[172];
    uint8_t TheGreatUnknown[];
 
// When reading a TR4 savegame, first jump to EOF - 8 and check if the string "NGLE"
// is present. If that is the case, then it is a NGLE savegame.
// It means that the "standard" TR4 save info (TheGreatUnknown) will have
// a length of (file length) - (pos of TheGreatUnknown) - NGHeader.size
#if NGLE
    struct
    {
        uint8_t data[size - 8];
        uint8_t signature[4]; // ASCII string; always "NGLE"
        uint32_t size;
    } NGHeader;
#endif
};