Types

import { actor } from "rivetkit";

const counter = actor({
  state: { count: 0 },

  // CreateContext in createState hook
  createState: (c, input: { initial: number }) => {
    return { count: input.initial };
  },

  // ActionContext in actions
  actions: {
    increment: (c) => {
      c.state.count += 1;
      return c.state.count;
    }
  }
});

import { actor, CreateContextOf, ActionContextOf } from "rivetkit";

const gameRoom = actor({
  state: {
    players: [] as string[],
    score: 0
  },

  createState: (c, input: { roomId: string }) => {
    initializeRoom(c, input.roomId);
    return { players: [], score: 0 };
  },

  actions: {
    addPlayer: (c, playerId: string) => {
      validatePlayer(c, playerId);
      c.state.players.push(playerId);
    }
  }
});

// Extract CreateContext type for createState hook
function initializeRoom(
  context: CreateContextOf<typeof gameRoom>,
  roomId: string
) {
  console.log(`Initializing room: ${roomId}`);
  // context.state is not available here (being created)
  // context.vars is not available here (not created yet)
}

// Extract ActionContext type for actions
function validatePlayer(
  context: ActionContextOf<typeof gameRoom>,
  playerId: string
) {
  // Full context available in actions
  if (context.state.players.includes(playerId)) {
    throw new Error("Player already in room");
  }
}