RT2 - RText Localization File¶

Applies to: GT4, GT5, GTPSP, GT6, GT7 · Extension: .rt2

RT2 Stands for RText 2 (Region Text 2?).

They are key-value dictionaries for localized text.

Editing¶

GT.RText by Razer2015 can be used to edit these files.

A C# library is also available - PDTools.RText by Nenkai

RT05 (RTextV5)¶

Applies to GT Sport, GT7 · Endian: Big (GT5/GT6) · Little (GT4, GT Sport, GT7)

Size: 0x20

Field	Offset	Type	Description
`RT0x`	`0x00`	`Int`	Magic, (Enforced, cannot be different)
Page Count	`0x04`	`Int`	Number of pages (categories) in the RText
Unknown	`0x08`	`Byte`	This field is not read
Relocation Pointer	`0x10`	`Int`	Relocation Pointer
Padding	`Until 0x20`	`Byte`	N/A

Page¶

Size: 0x10

Field	Offset	Type	Description
Page Name Pointer	`0x00`	`Int`	String Offset to Name (Zero-terminated)
Pair Count	`0x04`	`Int`	Number of pairs in this category
Empty	`0x08`	`Int`	N/A
Pairs Pointer	`0x0C`	`Pair*`	Offset to the pairs

Pair¶

Size: 0x10

Field	Offset	Type	Description
ID	`0x00`	`UInt`	String Offset to Name (Zero-terminated)
Label Name Length	`0x04`	`UShort`	Length of the label string
Value Name Length	`0x06`	`UShort`	Length of the value string
Label String Pointer	`0x08`	`char*`	Offset to the key's encrypted label (Zero-terminated)
Value String Pointer	`0x0C`	`char*`	Offset to the key's encrypted value (Zero-terminated)

Encryption¶

The content is encrypted with Salsa20, use the following sample code to decrypt it:

C#

static string Key = "majimenihataraiteimasu";

static byte[] Decrypt(byte[] encrypted, string key)
{
    if (encrypted.Length == 0)
        return encrypted;

    using (SymmetricAlgorithm salsa20 = new Salsa20SymmetricAlgorithm())
    {
        var dataKey = new byte[8];
        var keyBytes = Encoding.UTF8.GetBytes(key);
        byte[] decrypted = new byte[encrypted.Length];
        using (var decrypt = salsa20.CreateDecryptor(keyBytes, dataKey))
            decrypt.TransformBlock(encrypted, 0, encrypted.Length, decrypted, 0);

        return decrypted;
    }
}

[...]

Decrypt(..., Key);

RT04 (RTextV4)¶

Applies to GTPSP, GT5 · Endian: Big (GT5) · Little (GT4/GTPSP)

Header¶

Size: 0x10

Field	Offset	Type	Description
`RT04`	`0x00`	`Int`	Magic, (Enforced, cannot be different)
Relocation Pointer	`0x04`	`Int`	Relocation Pointer
Empty	`0x08`	`Int`	N/A
Page Count	`0x0C`	`Int`	Number of pages (categories) in the RText

Page¶

Size: 0x10

Field	Offset	Type	Description
Page Name Pointer	`0x00`	`Int`	String Offset to Name (Zero-terminated)
Pair Count	`0x04`	`Int`	Number of pairs in this category
Pairs Pointer	`0x08`	`Pair*`	Offset to the pairs
Padding	`0x0C`	`Int`	Padding `5E 5E 5E 5E`

Pair¶

Size: 0x10

Field	Offset	Type	Description
ID	`0x00`	`UInt`	ID
Label String Pointer	`0x04`	`char*`	Offset to the key's label (Zero-terminated)
Value String Pointer	`0x08`	`char*`	Offset to the key's value (Zero-terminated)

RT03 (RTextV3)¶

Applies to GT4 · Little (GT4/GTPSP)

RTextV3 did not have pair IDs.

Header¶

Size: 0x10

Field	Offset	Type	Description
`RT03`	`0x00`	`Int`	Magic, (Enforced, cannot be different)
Relocation Pointer	`0x04`	`Int`	Relocation Pointer
Empty	`0x08`	`Int`	N/A
Page Count	`0x0C`	`Int`	Number of pages (categories) in the RText

Page¶

Size: 0x10

Field	Offset	Type	Description
Page Name Pointer	`0x00`	`Int`	String Offset to Name (Zero-terminated)
Pair Count	`0x04`	`Int`	Number of pairs in this category
Pairs Pointer	`0x08`	`Pair*`	Offset to the pairs
Padding	`0x0C`	`Int`	Padding `5E 5E 5E 5E`

Pair¶

Size: 0x08

Field	Offset	Type	Description
Label String Pointer	`0x00`	`char*`	Offset to the key's label (Zero-terminated)
Value String Pointer	`0x04`	`char*`	Offset to the key's value (Zero-terminated)

Notes¶

All games after GT4 have backwards compatibility with RTextV3 and RTextV4. Endianess will depend of the current platform.

The string table must be properly ordered alphanumerically as the game uses binary searching.

String/Data alignment is 0x04.