Tomb Raider: Chronicles - Savegame Editor

This is a standalone savegame editor for Tomb Raider: Chronicles. It has been tested and works with the Steam version of the game, as well as the CD and multi-patched versions. Scroll down to the next section below for instructions on how to use this program. For a more robust and well-maintained savegame editor that supports the entire Tomb Raider classic series, check out TR-SaveMaster.

Installation and use

To download and use this savegame editor, simply navigate to the Release folder on this repo, then download TRC-SaveEdit.exe. You can save and run the .exe from anywhere on your computer. It is not necessary to launch the file with administrator privileges. To select a savegame to modify, click "Browse", then navigate to your game directory. Your game directory location depends on whether you installed by CD or through Steam.

Steam install directory: C:\Program Files (x86)\Steam\steamapps\common\Tomb Raider (V) Chronicles

CD install directory: C:\Program Files (x86)\Core Design\Tomb Raider Chronicles

Once you have selected a savegame file, you can give yourself extra ammo, extra weapons, extra medipacks, and more. You can give yourself guns that are "enabled" on a given level -- but unfortunately, certain guns had to be disabled for certain levels in this editor. This is because enabling guns that aren't supposed to be used on certain levels will crash the game. For example, trying to use a hacked savegame file with an HK Gun in inventory on Streets of Rome will result in the game crashing. Once you are finished entering the desired changes, click "Save" to apply them to the savegame file. To set medipacks or ammo to unlimited, set their values to 65535. Shotgun ammo values higher than 5461 will appear as negative in game. Make sure to backup your savegame files as a precaution.

Determining the correct health offset

The health data is stored dynamically, with anywhere from 1 to 20 unique health offsets per level. These offsets appear to shift based on level triggers and change frequently. Writing to the incorrect health offset may cause the game to crash. To find the correct health offset, this program uses a heuristic algorithm. It takes the health offset range unique to each level, then loops through them, performing two heuristic checks.

First, it checks for a valid health value (greater than 0 and less than or equal to 1000). If the first check is passed, it performs one more check by examining the surrounding data. Since the character animation data is always stored 6 bytes away from the health offset, the algorithm checks the values 6 bytes from the health offset for known character animation byte flags. If a known pattern is found, the offset is returned as a valid health offset. Otherwise, an error code is returned. This method detects the correct health offset approximately 96% of the time.

int GetHealthOffset()
{
	for (int offset = MIN_HEALTH_OFFSET; offset <= MAX_HEALTH_OFFSET; offset++)
	{
		int healthValue = ReadUInt16(offset);

		if (healthValue > MIN_HEALTH_VALUE && healthValue <= MAX_HEALTH_VALUE)
		{
			byte byteFlag1 = ReadByte(offset - 7);
			byte byteFlag2 = ReadByte(offset - 6);

			if (IsKnownByteFlagPattern(byteFlag1, byteFlag2))
			{
				return offset;
			}
		}
	}

	return -1;
}

Offset tables

For the weapons variables, a value of 0 means disabled, and a value of 0x9 will enable the weapon in inventory. For the HK, grappling gun, revolver, and deagle, a value of 0xD will enable the gun along with the sight attached to it. Setting values like ammo, medipacks, or flares to 0xFFFF (65535 in decimal) will make them unlimited. The shotgun ammo variables on offsets 0x1A0 and 0x1A2 use a multiplier of 6. Meaning, a value of 36 in the save file will yield a value of 6 in game. All of the offsets are static across levels, with the exception of the health offsets, which are dynamically allocated.

General

Offset	Type	Variable
0x000	String	Level Name
0x04B	Int32	Save Number
0x16F	UInt8	Pistols
0x170	UInt8	Uzi
0x171	UInt8	Shotgun
0x172	UInt8	Grappling Gun
0x173	UInt8	HK Gun
0x174	UInt8	Revolver/Deagle
0x175	UInt8	LaserSight
0x177	UInt8	Binoculars/Headset
0x178	UInt8	Crowbar
0x194	UInt16	Small Medipack
0x196	UInt16	Large Medipack
0x198	UInt16	Flares
0x19C	UInt16	Uzi Ammo
0x19E	UInt16	Revolver/Deagle Ammo
0x1A0	UInt16	Shotgun Normal Ammo
0x1A2	UInt16	Shotgun Wideshot Ammo
0x1A4	UInt16	HK Ammo
0x1A6	UInt16	Grappling Gun Ammo
0x1C3	UInt8	Secrets
0x1EC	UInt8	Level Index

Health

Level	Offset range
Streets of Rome	0x4F4 - 0x4F8
Trajan's Markets	0x542 - 0x5D7
The Colosseum	0x4D2 - 0x7FF
The Base	0x556 - 0x707
The Submarine	0x520 - 0x5D2
Deepsea Dive	0x644 - 0x6DE
Sinking Submarine	0x5CC - 0x66B
Gallows Tree	0x4F0 - 0x52D
Labyrinth	0x538 - 0x61A
Old Mill	0x512 - 0x624
The 13th Floor	0x52A - 0x53A
Escape with the Iris	0x6F6 - 0xC47
Red Alert!	0x52C - 0x5D6