Splitting more, added chat, and fancier draw-animations

api/chat.js

@@ -0,0 +1,25 @@
+module.exports = io => {
+  io.on("connection", socket => {
+    let username = null;
+
+    socket.on("username", msg => {
+      if (msg.username == null) {
+        username = null;
+        socket.emit("accept_username", false);
+        return;
+      }
+      if (msg.username.length > 3 && msg.username.length < 30) {
+        username = msg.username;
+        socket.emit("accept_username", true);
+        return;
+      }
+      socket.emit("accept_username", false);
+    });
+
+    socket.on("chat", msg => {
+      msg.username = username;
+      msg.timestamp = new Date().getTime();
+      io.emit("chat", msg);
+    });
+  });
+};