A sound effect authoring tool for GameTank games. This is based off a similar tool by Clyde Shaffer but attempts to improve the editing experience and make it easy to input exact values when desired.
This application can be run in a number of different ways.
Using npm, a dev server can be ran locally with npm run dev. This use port 5173 by default. You can also simply build the project with npm run build and serve the resulting static files as you'd like.
Alternatively Nix can be used for either running a dev server or building the static assets. You can run a dev server with nix run. This will serve on port 8080 by default. An alternative port can specified as a first argument: e.g. nix run . -- 9000 to run on port 9000. nix build will build the project, producing the static files.
The sound effects are packed in a binary format. The first byte represents sound effect length in frames (60fps). The second byte represents the level of feedback. From this point on, each frame's sample is stored as 8 bytes: one for each operator's amplitude followed by one for each operator's pitch.
An integrated GameTank emulator is used to facilitate previewing sounds. Due to browser restrictions, it is generally necessary to click on the emulator before it can produce sounds.
The emulator is built from this repo. It's build products, emulator.js and emulator.wasm are checked in to this repo in the public/ directory. A custom ROM, sfx.gtr, is used to play the sounds. Ideally, building the emulator would take place while building this application so that we wouldn't have to check in build artifacts, but for now this is fine.
The page's url changes as sound effects are created. If you share a link with a friend they will be able to open the exact sound effect you were working on.