Pathologic Game Research Project

Reverse-engineering Pathologic game resources and share my results in the public domain

Pathologic is a property of Ice-Pick Lodge. All right belong to their respective owners.

Goals

• Extract .VFS files
• Create GUI utility to extract and pack .VFS files
• Reverse-enginere .mesh files structure
• Create a model viewer

Geometry.vfs

Contains 3D models data.

.mesh file structure (NOT COMPLETE)

struct {
    unsigned int unknown1;
    if (unknown1 == 0) {
        unsigned int unknown2;
    }
    unsigned int unknown3;
    unsigned int unknown4;
    unsigned char unknown5;
    unsigned char texture_name_length;
    char texture_name[texture_name_length];
    unsigned char unknown6;
    unsigned int vertices_count;
    unsigned int indices_count;

    float unknown_floats[19]; // there are always 19 float values here, but their purpose is unknown

    char unknown_chunk[13] // for inv_lemon.mesh
//    char unknown_chunk[13] // for inv_samopal.mesh
//    char unknown_chunk[13] // for grenade.mesh
//    char unknown_chunk[17] // for victoria.mesh
//    char unknown_chunk[17] // for avrox_grave01.mesh
//    char unknown_chunk[85] // for pond.mesh
//    char unknown_chunk[729] // for trash01.mesh
//    char unknown_chunk[3766] // for Bench41.mesh
//    char unknown_chunk[4643] // for ithouse_podushka06.mesh
//    char unknown_chunk[159528] // for b6q01_bull.mesh

    struct {
        short x;
        short y;
        short z;
        char unknown[12];
    } vertices[vertices_count];
    struct {
        short v1;
        short v2;
        short v3;
    } indices[indices_count];
} mesh;

Pathologic Mesh Viewer

GitHub Page