empathy: Tell clients how many players have responded

[empires-server] / empathy.js

diff --git a/empathy.js b/empathy.js
index 7a75b71ecdd12a071945cdb89c0a8530cf38ce94..9bc5740d1b9b6fab0bed5d47e3dcb99138bc5676 100644 (file)
--- a/empathy.js
+++ b/empathy.js
@@ -5,8 +5,11 @@ class Empathy extends Game {
   constructor(id) {
     super(id);
     this.state = {
-      prompts: []
+      prompts: [],
+      active_prompt: null,
+      players_answered: 0
     };
+    this.answers = [];
     this.next_prompt_id = 1;
   }
 
@@ -35,6 +38,50 @@ class Empathy extends Game {
 
     return true;
   }
+
+  /* Returns true on success, false for prompt not found. */
+  start(prompt_id) {
+    const prompt = this.state.prompts.find(p => p.id === prompt_id);
+    if (! prompt)
+      return false;
+
+    /* Ignore any start request that comes in while a prompt is
+     * already being played. */
+    if (this.state.active_prompt)
+      return false;
+
+    this.state.active_prompt = prompt;
+
+    this.broadcast_event_object('start', prompt);
+
+    return true;
+  }
+
+  receive_answer(prompt_id, session_id, answers) {
+    const player = this.players_by_session[session_id];
+    if (! player)
+      return { valid: false, message: "Player not found" };
+
+    const prompt = this.state.prompts.find(p => p.id === prompt_id);
+    if (! prompt)
+      return { valid: false, message: "Prompt not found" };
+
+    if (prompt !== this.state.active_prompt)
+      return { valid: false, message: "Prompt no longer active" };
+
+    /* Save the complete answers for our own use later. */
+    this.answers.push({
+      player: player,
+      answers: answers
+    });
+
+    /* And notify players how many players have answered. */
+    this.state.players_answered++;
+
+    this.broadcast_event_object('answered', this.state.players_answered);
+
+    return { valid: true };
+  }
 }
 
 Empathy.router = express.Router();
@@ -72,6 +119,26 @@ router.post('/vote/:prompt_id([0-9]+)', (request, response) => {
     response.sendStatus(404);
 });
 
+router.post('/start/:prompt_id([0-9]+)', (request, response) => {
+  const game = request.game;
+  const prompt_id = parseInt(request.params.prompt_id, 10);
+
+  if (game.start(prompt_id))
+    response.sendStatus(200);
+  else
+    response.sendStatus(404);
+});
+
+router.post('/answer/:prompt_id([0-9]+)', (request, response) => {
+  const game = request.game;
+  const prompt_id = parseInt(request.params.prompt_id, 10);
+
+  const result = game.receive_answer(prompt_id,
+                                     request.session.id,
+                                     request.body.answers);
+  response.json(result);
+});
+
 Empathy.meta = {
   name: "Empathy",
   identifier: "empathy",