multiplayer added

src/net/protocol.js

@@ -0,0 +1,37 @@
+// Wire protocol shared between the browser client, the host and the relay.
+// All messages are JSON objects with a `type` field.
+
+export const MSG = {
+  // client -> relay
+  JOIN: 'join',           // {room, name}
+  LEAVE: 'leave',         // {}
+  // relay -> client
+  JOINED: 'joined',       // {id, host, room}
+  ROSTER: 'roster',       // {players: [{id, name}]}  (host only)
+  HOST_LEFT: 'host-left', // {}
+  ERROR: 'error',         // {message}
+  // client -> relay -> host (non-host clients only)
+  COMMAND: 'command',     // {playerId, cmd}
+  // host -> relay -> other clients (verbatim payload)
+  BROADCAST: 'broadcast', // {payload}
+};
+
+export const CMD = {
+  READY: 'ready',             // lobby: client is ready
+  UNREADY: 'unready',         // lobby: client no longer ready
+  CONFIG: 'config',           // lobby: host updates lobby config {players, rounds, terrain}
+  START: 'start',             // lobby: host starts the game
+  FIRE: 'fire',               // {a, p, weaponIndex}
+  BUY: 'buy',                 // {item}
+  SELL: 'sell',               // {item}
+  CHAT: 'chat',               // {text}
+};
+
+export const HOST_MSG = {
+  LOBBY: 'lobby',             // {players: [{id, name, ready}], config: {players, rounds, terrain}}
+  WORLD: 'world',             // {snap}
+  TERRAIN: 'terrain',         // {png: base64}
+  EVENT: 'event',             // {kind, ...}
+  START_ROUND: 'start-round', // {}  round N begins
+  END_GAME: 'end-game',       // {reason}
+};