Souls Lib (Soulib)

Currently a very WIP library being created slowly in my free time. Feel free to contribute but I don't have any clear direction on how I want this project to be structured so please be mindful of that. If you have any questions feel free to ask them.

Goals

• Zig Library
• C ABI Library from Zig
• All recent common fromsoft formats (excluding older titles. anything prior ds1-ptde)

Design of the library

Rough summary of using the library:

• Open file using it's path.
• Read all bytes from file.
• Pass file bytes to library and parse.

Example Usage

const std = @import("std");
// Import the library.
const soulib = @import("soulib");

pub fn main() !void {
    // Define the allocator to use.
    var arena = std.heap.ArenaAllocator.init(std.heap.page_allocator);
    defer arena.deinit();
    const allocator = arena.allocator();

    // Define the file to parse over.
    const path = "path/to/dcx/file.dcx";
    var file = std.fs.openFileAbsolute(
        path,
        .{ .mode = .read_only },
    ) catch unreachable;
    defer file.close();

    // Read the bytes from the file.
    const fileBytes = try file.readToEndAlloc(allocator, try file.getEndPos());

    // Parse the file.
    const dcx = try soulib.DCX.read(
        allocator,
        fileBytes,
    );
    
    // Use the parsed data.
    std.debug.print("HEADER:\n    Magic: {c}\n    Compression Type: {c}\n    Compressed size: {d}\n    Decompressed size: {d}\nBODY:\n    Length: {d}\n    Summary: {x}", .{
        dcx.header.dcx,
        dcx.header.format,
        dcx.header.compressedSize,
        dcx.header.uncompressedSize,
        dcx.data.len,
        dcx.data[0..32],
    });
}

Formats

Basic descriptions are provided below. Checkmarks show library progress on file type.

State	Format	Extension	Description
✏️	DCX	.dcx	A simple wrapper for a single compressed file
✏️	TPF	.tpf	A container for platform-specific texture data
❌	BND3	.*bnd	A general-purpose file container used before DS2
❌	BHD5	.bhd, .bhd5	The header file for the large primary file archives used by most games
❌	BTAB	.btab	Controls lightmap atlasing
❌	BTL	.btl	Configures point light sources
❌	BTPB	.btpb	Contains baked light probes for a map
❌	BXF3	.*bhd + .*bdt	Equivalent to BND3 but with a separate header and data file
❌	CCM	.ccm	Determines font layout and texture mapping
❌	CLM2	.clm	A FLVER companion format that has something to do with cloth
❌	DRB	.drb	Controls GUI layout and styling
❌	EDD	.edd	An ESD companion format that gives friendly names for various elements
❌	EMELD	.eld, .emeld	Stores friendly names for EMEVD events
❌	EMEVD	.evd, .emevd	Event scripts
❌	ENFL	.entryfilelist	Specifies assets to preload when going through a load screen
❌	ESD	.esd	Defines a set of state machines used to control characters, menus, dialog, and/or map events
❌	F2TR	.flver2tri	A FLVER companion format that links the vertices to the FaceGen system
❌	FLVER	.flv, .flver	FromSoftware's standard 3D model format
❌	FMG	.fmg	A collection of strings with corresponding IDs used for most game text
❌	GPARAM	.fltparam, .gparam	A generic graphics configuration format
❌	GRASS	.grass	Specifies meshes for grass to be dynamically placed on
❌	LUAGNL	.luagnl	A list of global variable names for Lua scripts
❌	LUAINFO	.luainfo	Information about AI goals for Lua scripts
❌	MCG	.mcg	A high-level navigation format used in DeS and DS1
❌	MCP	.mcp	Another high-level navigation format used in DeS and DS1
❌	MSB	.msb	The main map format, listing all enemies, collisions, trigger volumes, etc
❌	MTD	.mtd	Defines some material and shader properties; referenced by FLVER materials
❌	NVM	.nvm	The navmesh format used in DeS and DS1
❌	PARAM	.param	A generic configuration format
❌	PARAMDEF	.def, .paramdef	A companion format that specifies the format of data in a param
❌	PARAMTDF	.tdf	A companion format that provides friendly names for enumerated types in params
❌	RMB	.rmb	Controller rumble effects for all games

Examples Building

To run examples:
zig build read_dcx -Dtarget=x86_64-windows -- "E:/SteamLibrary/steamapps/common/DARK SOULS REMASTERED/msg/ENGLISH/item.msgbnd.dcx"

Notes on Testing

The tests in the source look to a Dark Souls Remastered Directory. It should be alongside the build.zig and called "dsr".

• build.zig
• src/
  • root.zig
  • dcx.zig
• dsr/
  • chr/
  • msg/