A small command-line tool and library for decoding Growtopia items.dat to JSON. Made in C99. You can open a ticket in Issues if any problems occur. (bugs may occur since this is a completely refactored old project / syntax might be different)

You can either snatch the decoded items.dat from here Releases, or continue reading.

REQUIRED

• Place the compatible items.dat that you want to decode within the root folder.

Prerequisites

• Windows: PowerShell and a supported toolchain (MSYS2/MinGW or Visual Studio) to build from source.
• Linux/macOS: gcc and make.

Build Windows (PowerShell):

.\build.bat

Unix (Make):

make

Usage

• Decode items.dat to JSON (writes to stdout):

.\itemsdat_decoder.exe --json items.dat > items.json

• Print help:

.\itemsdat_decoder.exe --help

Version changes

• New Field: punchOptions (string)

• New Fields:
  • flags3 (int32_t)
  • bodyPart[9] (uint8_t array)

• New Field: lightRange (int32_t)

• New Field: unknownInt3 (int32_t)

• New Fields: Chair/player functionality?
  • canSit (uint8_t)
  • playerOffsetX (int32_t)
  • playerOffsetY (int32_t)
  • chairTextureX (int32_t)
  • chairTextureY (int32_t)
  • chairLegOffsetX (int32_t)
  • chairLegOffsetY (int32_t)
  • chairTexture (string)

• New Field: itemRenderer (string)

• New Field: extraFlags1 (int32_t)

• New Field: itemRendererHash (int32_t)

• New Field: unknownBytes2[9] (uint8_t array)

• New Field: unknownShort1 (int16_t)

• New Field: info (string)

• New Fields: Recipe system
  • recipe[0] (uint16_t)
  • recipe[1] (uint16_t)

• New Field: unknownBytes3 (uint8_t)

License

• See LICENSE for license details.