melonJS works with any JavaScript bundler — Vite, Webpack, Rollup, esbuild, Parcel, and others. This page covers the generic setup. The example repo uses Vite.
Install dependencies
npm install melonjs
npm install @wvdsh/sdk-js
@wvdsh/sdk-js's default export is the live, fully-typed Wavedash SDK singleton.
Wire up Wavedash.init()
In the file where you call new Application(...), import Wavedash and call init() once your game is ready.
Calling Wavedash.init() is required. Your game stays hidden behind the Wavedash loading screen until you do. Call it once your game is ready to play.
import Wavedash from "@wvdsh/sdk-js";
import { Application, Stage, state as melonState, input, CANVAS } from "melonjs";
Wavedash.updateLoadProgressZeroToOne(0.3);
class PlayScene extends Stage {
onResetEvent() {
input.bindKey(input.KEY.UP, "up");
input.bindKey(input.KEY.DOWN, "down");
}
update(dt) {
// per-frame logic — return true if something needs redrawing
return true;
}
draw(renderer) {
renderer.setColor("#fff");
renderer.fillRect(40, 40, 20, 80);
}
}
new Application(1600, 900, { parent: "screen", scale: "auto", renderer: CANVAS });
melonState.set(melonState.PLAY, new PlayScene());
melonState.change(melonState.PLAY);
Wavedash.init({ debug: true });
Call updateLoadProgressZeroToOne(...) during async asset loading; init() automatically signals load completion, so call it last.
wavedash.toml
Point upload_dir at your bundler's output directory. For Vite and most other bundlers that's ./dist.
game_id = "YOUR_GAME_ID_HERE"
upload_dir = "./dist"
Local development
Produce a build, then run wavedash dev to serve it through the Wavedash sandbox.
SDK features
Once initialized, Wavedash exposes leaderboards, achievements, stats, and user data:
const user = Wavedash.getUser();
const lb = await Wavedash.getLeaderboard("high-scores");
await Wavedash.uploadLeaderboardScore(lb.data.id, score, true);
Wavedash.setAchievement("first_win", true);