add quit channel to clean up after self

game/game.go

@@ -17,6 +17,7 @@ type Game struct {
 	Music        rl.Music
 	Chat         *Chat
 	MenuOpen     bool
+	QuitChan     chan struct{} // Channel to signal shutdown
 }
 
 func New() *Game {
@@ -37,7 +38,8 @@ func New() *Game {
 			Fovy:       45.0,
 			Projection: rl.CameraPerspective,
 		},
-		Chat: NewChat(),
+		Chat:     NewChat(),
+		QuitChan: make(chan struct{}),
 	}
 	game.Player.UserData = game
 	game.Chat.userData = game
@@ -259,6 +261,7 @@ func (g *Game) DrawMenu() {
 				case "Settings":
 					// TODO: Implement settings
 				case "Exit Game":
+					close(g.QuitChan) // Signal all goroutines to shut down
 					rl.CloseWindow()
 				}
 			}