# Haunted House A Verse realm you walk through in the browser at https://openagents.com/realm/haunted-house: a house at night with nine haunts to set off, characters to talk to, doors to open, and a quest, Make it yours. It is the same Coax code the OpenAgents iOS app runs, compiled to WebAssembly and drawn with WebGPU: - `verse/haunt.coax` plays the house: its rooms, objects, lights, people, the nine haunt zones and what they do, doors, conversations and sounds. The house itself is `Haunt.pb` (a protobuf document, `proto/haunt.proto`) with its geometry (`Haunt.vertices`, `Haunt.indices`) and twelve texture sheets. - `verse/player.coax` walks you through it, against its walls; `verse/grid.coax` reads a phone's thumbs. - `apps/openagents-web/realm.coax` draws the HUD and decides the controls; `realm-face.c` binds them for the browser as the iOS app's view controller does; `realm.wgsl` draws the house with the Verse engine's own light, fog and tone functions (`verse/haunt-light.coax`, `verse/light.coax`). ## Controls - Computer: W A S D or the arrow keys walk, drag the mouse to look, Space jumps, Shift runs, E acts on what you face (talks to a person, does the quest's step at its orb, opens a door; in a conversation, T asks them a typed question, TEACH tells them something to remember, E asks for a hint and Escape says goodbye), V changes the view, M opens the map, C opens the chat (type, Enter sends, Escape stops typing, C closes it), the wheel zooms (out of first person into third, and back in). B opens edit mode (the camera steps behind you): 1 to 5 place a jack-o'-lantern, a candlestick, a ghost, a spider or a tombstone in front of you; click a thing to pick it, then the arrows move it across and along your view, R turns it, + and - resize it, Delete removes it, and Escape lets go. With nothing picked, the nearest haunt zone (within three metres) shows: BIGGER, SMALLER, ONCE or ALWAYS, RESET. Z undoes and Y redoes (sixteen steps). B, Escape or DONE play again. - Phone: your left thumb walks, your right thumb looks, a tap jumps. The HUD's buttons (VIEW, MAP, EDIT, CHAT, EXIT, the chat's SAY SOMETHING, SEND and CANCEL, edit mode's things, edits, UNDO and REDO, a conversation's ASK, TEACH, HINT and BYE, and the prompt for what you face) take taps; in edit mode a tap on a thing picks it. - Without WebGPU (a current Chrome, Edge or Safari) the page shows only its name and a link here. ## The quest: Make it yours Eight steps, one at a time, each at an orange orb (the HUD names the step, and a glow on the screen's edge points to an orb out of view): walk in, edit the hall, place something, save your house, share it (copies the link), make it your own, invite a friend (copies the link), tell us how it went (a typed answer). The house, your changes, the step you're on and your answer are kept in this browser and come back on your next visit. ## Talking to the characters A question you ask goes to our server, where Google's Gemini answers as the character: from who they are, what players taught them and the last ten lines of the conversation (`POST /api/playtest/npc/ask`). When the server can't answer (an error, the day's answers used up, or nothing back in 12 seconds), the character answers from their own lines. What you teach a character is added to what they know in this house and kept with your save. ## Other players and the chat Everyone else in the same world is drawn where they stand, a pale figure with their name over it on a plate: the page posts where you are about every second (`POST /api/playtest/presence/`, the room being the world's id) and is answered with everyone seen in the last six seconds, so another player shows within two. A world holds sixteen at once. The chat (CHAT, or C) shows how many are here and the last lines said; a line goes to everyone here (`POST /api/playtest/chat/`, at most 500 characters, five in ten seconds) and is kept, with your account's name or "Guest" and four letters of your player id. A guest takes part too: a browser without a player key is given one. ## A player's own world A link with a world's id after `#` (`/realm/haunted-house#planet-…`) opens that player's world: what its owner last published (`GET /api/playtest/world/`) over the house. Its owner's edits are published when they leave edit mode or reach the quest's save step; anyone else's are offered to the owner instead (`POST /api/playtest/change/`). The owner sees the newest offer waiting, with who made it, and presses ACCEPT (the world is published with it) or DECLINE (nothing changes); `GET /api/playtest/log/` lists every publish and offer. Nothing is paid. `coax/web/api/realm-flow.ts` plays this in headless Chrome. ## On the screen The room you're in, the quest's progress and its step, the house's notices as haunts go off, who or what is near, everyone else here, a conversation, the chat, the map and the hotbar. Everything is drawn by Coax in the house's own plain look: each panel and button a dark wood plate with one thin bronze line, its words parchment, in the Filament stroke font. ## What the iOS app has that the web doesn't yet Editing characters and moving zones, importing and switching worlds, and the bloom over bright lights. The Haunted House itself keeps your changes in this browser (and on the server once you join with an email); a player's own world is published to the server. ## Needs A browser with WebGPU: a current Chrome or Edge, or Safari 26. About 6.6 MB arrives on the first visit (the geometry, the texture sheets and the document; sounds as they first play), and is cached after. ## Credits Original layout and art by OpenAgents (Apache-2.0); sounds CC0; Quaternius CC0 props (`apps/openagents-ios/OpenAgents/Resources/Haunt-NOTICE.txt`).