X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=empires%2Fempires-client.js;h=3be0670523869a38aca4058ff63d69249709fa6b;hb=fdf092626542c31b23cbb53a345dcb24f48ff90c;hp=511527b216151a47955afc314b223703ad4dd56e;hpb=ce0d14d58ea18f78a9cec1fd6a115fb692894205;p=lmno.games

diff --git a/empires/empires-client.js b/empires/empires-client.js
index 511527b..3be0670 100644
--- a/empires/empires-client.js
+++ b/empires/empires-client.js
@@ -9,17 +9,12 @@ function add_message(severity, message) {
 ${message}
 <span class="hide-button" onclick="undisplay(this.parentElement)">&times</span>
 </div>`;
-  message_area = document.getElementById('message-area');
+  const message_area = document.getElementById('message-area');
   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");
@@ -31,3 +26,91 @@ function register(form) {
 
   form.reset();
 }
+
+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_div = document.getElementById("players-div");
+  const players_element = document.getElementById("players");
+  const players = JSON.parse(event.data);
+
+  players_element.innerHTML = '';
+  for (const player of players) {
+    var li = document.createElement('li');
+    li.id = "player-" + player.id;
+    li.innerText = player.name;
+    players_element.appendChild(li);
+  }
+
+  /* Force players list to be visible. */
+  players_div.style.display = "block";
+});
+
+events.addEventListener("player-join", function(event) {
+  const players_div = document.getElementById("players-div");
+  const players = document.getElementById("players");
+  const player = JSON.parse(event.data);
+
+  const li = document.createElement('li');
+  li.id = "player-" + player.id;
+  li.innerText = player.name;
+  players.appendChild(li);
+
+  add_message("success", player.name + " is now in the game!");
+
+  /* Force players list to be visible. */
+  players_div.style.display = "block";
+});
+
+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);
+});
+
+events.addEventListener("game-state", function(event) {
+  const data = JSON.parse(event.data);
+  const old_state = data.old_state;
+  const new_state = data.new_state;
+
+  const hide_selector = ".show-state-" +old_state+ ",.hide-state-" +new_state;
+  const show_selector = ".hide-state-" +old_state+ ",.show-state-" +new_state;
+
+  /* Hide all elements based on the state transition. */
+  var elts = document.querySelectorAll(hide_selector);
+  for (const elt of elts) {
+    elt.style.display = "none";
+  }
+
+  /* And show all elements based on the same state transition. */
+  elts = document.querySelectorAll(show_selector);
+  for (const elt of elts) {
+    elt.style.display = "block";
+  }
+});
+
+events.addEventListener("character-reveal", function(event) {
+  const data = JSON.parse(event.data);
+  const character_name = data.character;
+
+  const character = document.getElementById("character-reveal");
+
+  character.innerText = character_name;
+});
+
+events.addEventListener("capture", function(event_string) {
+  const players = document.getElementById("players");
+  const event = JSON.parse(event_string.data);
+  const player = document.getElementById("player-" + event.captee);
+
+  players.removeChild(player);
+});