src/network/Client.ts

@@ -1,7 +1,7 @@
 import { PeerMetadata, NetworkMessage } from "./types";
 import EventEmitter from "eventemitter3";
 
-export class Client extends EventEmitter {
+export abstract class Client extends EventEmitter {
   public metadata: PeerMetadata;
   public players: string[];
 
@@ -47,6 +47,23 @@ export class Client extends EventEmitter {
   public get name(): string {
     return this.metadata.name;
   }
+
+  public abstract send<T extends NetworkMessage>(data: T): void;
+
+  public leave(): void {
+    this.send({
+      kind: "leave-req"
+    });
+  }
+
+  public say(to: string | null, message: string) {
+    this.send({
+      kind: "chat",
+      from: this.name,
+      to: to ? to : "",
+      message
+    });
+  }
 }
 
 export default Client;

src/network/PeerClient.ts

@@ -34,8 +34,11 @@ export class PeerClient extends Client {
     return this.metadata.name;
   }
 
-  protected send<T extends NetworkMessage>(conn: DataConnection, data: T) {
-    conn.send(data);
+  public send<T extends NetworkMessage>(data: T) {
+    if (!this.connection) {
+      throw new Error("Client is not connected to a server");
+    }
+    this.connection.send(data);
   }
 }
 

src/network/PeerServer.ts

@@ -13,7 +13,8 @@ import {
   RenameMessage,
   LeaveMessage,
   NetworkPlayer,
-  AckMessage
+  AckMessage,
+  ChatMessage
 } from "./types";
 import { LocalClient } from ".";
 import EventEmitter from "eventemitter3";
@@ -70,7 +71,12 @@ export class PeerServer extends EventEmitter {
 
   private _connection(conn: DataConnection) {
     const metadata = conn.metadata as PeerMetadata;
-    console.info("%s (%s) connected!", metadata.name, conn.label);
+
+    let player: NetworkPlayer = {
+      kind: "remote",
+      name: metadata.name,
+      conn: conn
+    };
 
     //
     // Check if this connection should be allowed
@@ -78,7 +84,7 @@ export class PeerServer extends EventEmitter {
 
     // Check if room is full
     if (this.playerCount >= this.room.info.max_players) {
-      this.send<ErrorMessage>(conn, { kind: "error", error: "room is full" });
+      this.send<ErrorMessage>(player, { kind: "error", error: "room is full" });
       conn.close();
       return;
     }
@@ -90,12 +96,13 @@ export class PeerServer extends EventEmitter {
       while (this.room.players[newname]) {
         newname = nextName(metadata.name);
       }
-      this.send<RenameMessage>(conn, {
+      this.send<RenameMessage>(player, {
         kind: "rename",
         oldname: metadata.name,
         newname: newname
       });
-      metadata.name = newname;
+      player.name = newname;
+      player.conn.metadata.name = newname;
     }
 
     // Check for password
@@ -104,43 +111,42 @@ export class PeerServer extends EventEmitter {
         try {
           let resp = data as PasswordResponse;
           if (resp.password != this.room.info.password) {
-            this.send<ErrorMessage>(conn, {
+            this.send<ErrorMessage>(player, {
               kind: "error",
               error: "invalid password"
             });
             return;
           }
           conn.off("data", checkPasswordResponse);
-          this.addPlayer(conn);
+          this.addPlayer(player);
         } catch (e) {
-          this.send<ErrorMessage>(conn, {
+          this.send<ErrorMessage>(player, {
             kind: "error",
             error: "not a password"
           });
         }
       };
 
-      this.send<PasswordRequest>(conn, { kind: "password-req" });
+      this.send<PasswordRequest>(player, { kind: "password-req" });
       conn.on("data", checkPasswordResponse.bind(this));
       return;
     }
 
-    this.addPlayer(conn);
+    this.addPlayer(player);
   }
 
-  private addPlayer(conn: DataConnection) {
-    const playerName = conn.metadata.name;
-    this.room.players[playerName] = {
-      kind: "remote",
-      name: conn.metadata.name,
-      conn: conn
-    };
+  private addPlayer(player: NetworkPlayer) {
+    const playerName = player.name;
+    this.room.players[playerName] = player;
 
     // Start listening for new messages
-    conn.on("data", this._received.bind(this, this.room.players[playerName]));
+    player.conn.on(
+      "data",
+      this._received.bind(this, this.room.players[playerName])
+    );
 
     // Send the player info about the room
-    this.send<RoomInfoMessage>(conn, {
+    this.send<RoomInfoMessage>(player, {
       kind: "room-info",
       room: {
         ...this.room.info,
@@ -158,7 +164,7 @@ export class PeerServer extends EventEmitter {
 
   private removePlayer(player: NetworkPlayer) {
     // Tell the player everything's fine
-    this.send<AckMessage>(player.conn, { kind: "ok", what: "leave-req" });
+    this.send<AckMessage>(player, { kind: "ok", what: "leave-req" });
 
     // Close connection with player
     player.conn.close();
@@ -172,6 +178,24 @@ export class PeerServer extends EventEmitter {
 
   private _received(player: Player, data: NetworkMessage) {
     switch (data.kind) {
+      // Player wants to say something in chat
+      case "chat":
+        data.from = player.name;
+        if (data.to == "") {
+          // Players is saying that out loud
+          this.broadcast(data);
+        } else {
+          // Player is telling someone specifically
+          if (data.to in this.players) {
+            this.send<ChatMessage>(this.players[data.to], data);
+          } else {
+            this.send<ErrorMessage>(player, {
+              kind: "error",
+              error: `player not found: ${data.to}`
+            });
+          }
+        }
+        break;
       // Player is leaving!
       case "leave-req":
         // If we're leaving, end the server
@@ -193,18 +217,18 @@ export class PeerServer extends EventEmitter {
     return this.room.players;
   }
 
-  protected send<T extends NetworkMessage>(conn: DataConnection, data: T) {
-    conn.send(data);
+  protected send<T extends NetworkMessage>(player: Player, message: T) {
+    if (player.kind == "remote") {
+      player.conn.send(message);
+    } else {
+      player.client.receive(message);
+    }
   }
 
   private broadcast<T extends NetworkMessage>(message: T) {
     for (const playerName in this.room.players) {
       const player = this.room.players[playerName];
-      if (player.kind == "remote") {
-        this.send<T>(player.conn, message);
-      } else {
-        player.client.receive(message);
-      }
+      this.send<T>(player, message);
     }
   }
 }

src/network/types.ts

@@ -69,6 +69,7 @@ export type NetworkMessage =
   | JoinMessage
   | LeaveMessage
   | RenameMessage
+  | ChatMessage
   | AckMessage;
 
 export interface PasswordRequest {
@@ -106,6 +107,13 @@ export interface RenameMessage {
   newname: string;
 }
 
+export interface ChatMessage {
+  kind: "chat";
+  from: string;
+  to: string; // "" means everyone
+  message: string;
+}
+
 export interface AckMessage {
   kind: "ok";
   what: string;

src/tests/unit/network.spec.ts

@@ -1,5 +1,5 @@
 import { MockHelper } from "@/testing";
-import { NetworkMessage, LocalClient } from "@/network";
+import { NetworkMessage, LocalClient, ChatMessage } from "@/network";
 import { EventHook } from "@/testing/EventHook";
 
 const sampleRoom = () => ({
@@ -74,4 +74,36 @@ describe("network/PeerClient", () => {
     // Client must have changed its internal data to match the new name
     expect(client1.name).not.toEqual(client2.name);
   });
+
+  test("Client can leave the room", async () => {
+    const mox = new MockHelper();
+    const hook = new EventHook();
+    const local = new LocalClient({ name: "server-player" });
+    const server = mox.createServer(sampleRoom(), "test-server", local);
+    const client = mox.createClient();
+    hook.hookEmitter(local, "player-joined", "client-joined");
+    hook.hookEmitter(local, "player-left", "client-left");
+    client.connect("test-server");
+    await hook.expect("client-joined", 1000);
+    client.leave();
+    await hook.expect("client-left", 1000);
+  });
+
+  test("Clients can chat", async () => {
+    const mox = new MockHelper();
+    const hook = new EventHook();
+    const local = new LocalClient({ name: "server-player" });
+    const server = mox.createServer(sampleRoom(), "test-server", local);
+    const client = mox.createClient();
+    hook.hookEmitter(local, "player-joined", "client-joined");
+    hook.hookEmitter(local, "chat", "client-chat");
+    client.connect("test-server");
+    await hook.expect("client-joined", 1000);
+    const hellomsg = "Hello everyone";
+    client.say("", hellomsg);
+    await hook.expect("client-chat", 1000, (msg: ChatMessage) => {
+      expect(msg.from).toEqual("client-peer");
+      expect(msg.message).toEqual(hellomsg);
+    });
+  });
 });