Add messages to message area when a player joins or leaves the game

[lmno.games] / empires / empires-client.js

diff --git a/empires/empires-client.js b/empires/empires-client.js
index 5f489f8780c547c6f8af2a743561a965ebdcd07c..3d528e08ba1e4efbee827b04a3c166c2ec90cd25 100644 (file)
--- a/empires/empires-client.js
+++ b/empires/empires-client.js
@@ -13,13 +13,8 @@ ${message}
   message_area.insertAdjacentHTML('beforeend', message);
 }
 
-function register_loaded(name) {
-  add_message("success", name + " is now in the game!");
-}
-
 function register(form) {
   var request = new XMLHttpRequest();
-  request.addEventListener("load", register_loaded(form.name.value));
 
   request.open("POST", API + "register");
   request.setRequestHeader("Content-Type", "application/json; charset=UTF-8");
@@ -34,6 +29,12 @@ function register(form) {
 
 const events = new EventSource(API + "events");
 
+events.onerror = function(event) {
+  if (event.target.readyState === EventSource.CLOSED) {
+      add_message("danger", "Connection to server lost.");
+  }
+};
+
 events.addEventListener("players", function(event) {
   const players_element = document.getElementById("players");
   const players = JSON.parse(event.data);
@@ -47,7 +48,7 @@ events.addEventListener("players", function(event) {
   }
 });
 
-events.addEventListener("player-register", function(event) {
+events.addEventListener("player-join", function(event) {
   const players = document.getElementById("players");
   const player = JSON.parse(event.data);
 
@@ -55,13 +56,16 @@ events.addEventListener("player-register", function(event) {
   li.id = "player-" + player.id;
   li.innerText = player.name;
   players.appendChild(li);
+
+  add_message("success", player.name + " is now in the game!");
 });
 
-events.addEventListener("player-deregister", function(event) {
+events.addEventListener("player-leave", function(event) {
   const players = document.getElementById("players");
   const id = JSON.parse(event.data);
   const player = document.getElementById("player-" + id.id);
 
+  add_message("info", player.innerText + " has left the game.");
   players.removeChild(player);
 });