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Add sound to a Three.js game — a listener, positional world sounds vs. non-positional UI sounds, overlapping playback, and a sound at every feedback moment. Use when a game is silent or only some actions make sound.
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Map player input (keyboard, mouse, touch, gamepad) to game logic with the @pmndrs/viverse action/binding system. Use when building movement controls, input handling, or custom state/event actions for a Three.js game, or when controls must change across game modes (menu, play, pause, cutscene) — e.g. pointer-lock controls wrongly stay live during a menu and a button click locks the pointer.
Design and build user interfaces for 3D apps and games — routing between spatial 3D/XR UI and 2D HUD UI, plus visual design principles. Use when adding menus, HUDs, panels, dashboards, or any in-app UI to a Three.js project, or deciding which UI technology to use.
Cameras for Three.js games — viverse's ready-made character camera (third/first-person orbit, collision, zoom) and, when you need it, building cameras and effects (screen shake, FOV speed) from scratch as ECS systems. Use when implementing or tuning camera movement and behavior.
Set up lighting for Three.js scenes — choosing light combinations, shadows, and look. Use when configuring scene lighting, fixing flat or harsh lighting, or adding shadows.
Use Three.js math classes (Vector3, Euler, Quaternion, Matrix4, Spherical) correctly instead of hand-rolled trigonometry, including when to pick Euler vs Quaternion. Use when doing rotations, orbit positioning, or any vector/angle math in a Three.js game.
Forward DOM pointer events into a Three.js scene and filter them with @pmndrs/pointer-events for click/tap/hover interaction with 3D objects and portals. Use when objects in the scene need to be clickable, selectable, or hoverable.
| name | audio |
| description | Add sound to a Three.js game — a listener, positional world sounds vs. non-positional UI sounds, overlapping playback, and a sound at every feedback moment. Use when a game is silent or only some actions make sound. |
Sound is feedback, not polish. If an action changes the game (fire, reload, pickup, hit, death, footstep, UI click) and makes no sound, the moment feels broken. Wire a sound to every such moment.
Attach one AudioListener to the camera, then choose positional vs. non-positional per sound:
const listener = new AudioListener()
camera.add(listener)
const buffer = await new AudioLoader().loadAsync('/sound-effects/gunshot.mp3')
// World event with a position → PositionalAudio attached to the source (pans + attenuates with distance)
const shot = new PositionalAudio(listener)
shot.setBuffer(buffer)
weapon.add(shot)
shot.play()
// UI / non-spatial event (reload, pickup, menu) → plain Audio
const ui = new Audio(listener)
ui.setBuffer(buffer)
ui.play()
Coverage should not make the mix tiring. Frequent cues and looping beds need quieter defaults than rare confirmation sounds, because repetition makes even correct sounds feel loud. Footsteps, ambient wind, engine hums, drones, and other near-constant sounds usually sit as low texture; they should confirm motion or mood without competing with weapons, hits, UI confirmations, or voice. Start conservative on repeated sounds, then raise only when the game loses readable feedback.
Prefer positional playback for world sounds whose source is visible or meaningful in space: enemy shots, enemy deaths, impacts, doors, machines, pickups in the world, and nearby hazards. Non-positional playback fits UI, music beds, narration, and player-only feedback that should stay stable in the listener's head. If a world sound must be non-positional for technical reasons, lower it and document the tradeoff so it does not read as a global alert.
Audio/PositionalAudio node can't play twice at once (.play() on an already-playing node warns and no-ops). For rapid sounds (gunfire, footsteps) keep a small pool of nodes or create a fresh node per shot from the shared buffer, so sounds don't cut each other off. A PositionalAudio only pans/attenuates while it's parented into the scene graph (source.add(node)), so a pooled positional node must stay attached — plain non-positional Audio has no such requirement.listener.context.resume().Walk the game's feedback moments and confirm each has a sound: fire, dry-fire, reload start + finish, pickup, craft, hit (dealt and taken), death, footstep (vary by surface), wave/round transitions, win/lose. Market sound-effect and background-music assets cover most needs; if a moment has no fitting asset, synthesize a short WebAudio tone rather than leaving it silent.
speech skillFor spoken output — NPC dialogue, narration, tutorial voice, accessibility readouts — route to the speech skill. It returns an audio clip URL from text and voice input, including guidance for voice selection, caching, browser autoplay constraints, and first-request warmup. Use this audio skill only to play the resulting clip through the same Audio/PositionalAudio nodes above.