The level editor that lives inside your game.
Brush-based level editing for Godot, with a retro radiosity lightmapper and sound that travels through the rooms you carve. No edit-save-run loop: edit, then test.
Store link coming soon · Godot 4.7 · Version 0.9
Hammerite is embedded in the game itself, so the level you are editing is the level you are playing. There is nothing to save, export or reload before you can try a change.
Carve a doorway and walk through it. Bake the light and look at it from where you stand. Close a door and hear the guard beyond it go quiet.
Solid is the default. Air brushes carve rooms out of it, and the compiler works out the rest: which air is one room, where rooms open into each other, which walls are visible. Overlap to extend a space, abut to divide one.
Lighting, sound and navigation are all read off that one compiled world, so a room is lit, heard and walkable the moment it is carved.
A GPU radiosity lightmapper in the spirit of the classic brush-based games: light that bounces, bleeds colour from the walls, and pools in the corners.
Every surface keeps four light slots, so lamps can flicker, dim and switch at runtime without a rebake: a guttering torch, a chandelier that goes out as one, a lightning flash across every window. After an edit, a quick bake lights just the walls that changed.
Sound finds its way through doorways and windows instead of through walls, so you hear it from the opening it comes through. A closed door on the way muffles it, and AI hears by the same rules.
Reverb comes from each room's size and surfaces, and weather is heard where it should be: rain and wind all around you outdoors, and indoors through the nearest windows, muffled by the roof.
The editor comes with its own manual under Help. Games made with Hammerite may ship it, so players can make maps too, royalty-free.
Walkable ground and traversal links come straight from the carved rooms, as Godot navigation meshes.
Each is a standalone Godot addon; nothing in them depends on a particular game. The docs have the guides and the full API reference.
| Addon | What it does | Needs |
|---|---|---|
| hammerite-core | Data model, subtractive compiler, runtime scene, radiosity lightmapper | — |
| hammerite-editor | The in-game level editor | core |
| hammerite-audio | Sound propagation through the rooms, weather, reverb; AI hearing | core |
| hammerite-nav | Walkable ground and traversal links; Godot navigation meshes | core |
| native kernel | Optional C++ for the heavy geometry: carving, compiling rooms and openings, navigation and bake preparation | core |
The kernel is what keeps the edit-test loop quick on a big level. On our reference level a cold compile drops from 40 s to 6.5 s, and an edit to a large room recompiles in 0.88 s instead of 7.1 s. Without it, GDScript does the same work with the same results, to the bit.
Commercial. Games made with Hammerite may ship it, and let their players make maps with it, royalty-free. The addons themselves may not be redistributed.