empathy: Tell clients how many players have responded

[empires-server] / empathy.js

diff --git a/empathy.js b/empathy.js
index 6fc926ff83b56991e22dde9ad4ad5635852601d1..9bc5740d1b9b6fab0bed5d47e3dcb99138bc5676 100644 (file)
--- a/empathy.js
+++ b/empathy.js
@@ -5,10 +5,83 @@ 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;
   }
+
+  add_prompt(items, prompt_string) {
+    const prompt = new Prompt(this.next_prompt_id, items, prompt_string);
+    this.next_prompt_id++;
+
+    this.state.prompts.push(prompt);
+
+    this.broadcast_event_object('prompt', prompt);
+
+    return prompt;
+  }
+
+  /* Returns true if vote toggled, false for player or prompt not found */
+  toggle_vote(prompt_id, session_id) {
+    const player = this.players_by_session[session_id];
+
+    const prompt = this.state.prompts.find(p => p.id === prompt_id);
+    if (! prompt || ! player)
+      return false;
+
+    prompt.toggle_vote(player.name);
+
+    this.broadcast_event_object('prompt', prompt);
+
+    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+      return { valid: false, message: "Prompt no longer active" };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();
@@ -33,32 +106,37 @@ class Prompt {
 router.post('/prompts', (request, response) => {
   const game = request.game;
 
-  const prompt = new Prompt(game.next_prompt_id,
-                            request.body.items,
-                            request.body.prompt);
-  game.next_prompt_id++;
-
-  game.state.prompts.push(prompt);
-
-  game.broadcast_event_object('prompt', prompt);
+  game.add_prompt(request.body.items, request.body.prompt);
 });
 
 router.post('/vote/:prompt_id([0-9]+)', (request, response) => {
-  const prompt_id = parseInt(request.params.prompt_id, 10);
   const game = request.game;
-  const player = game.players_by_session[request.session.id];
+  const prompt_id = parseInt(request.params.prompt_id, 10);
 
-  prompt = game.state.prompts.find(p => p.id === prompt_id);
-  if (! prompt || ! player) {
+  if (game.toggle_vote(prompt_id, request.session.id))
+    response.sendStatus(200);
+  else
     response.sendStatus(404);
-    return;
-  }
+});
 
-  prompt.toggle_vote(player.name);
+router.post('/start/:prompt_id([0-9]+)', (request, response) => {
+  const game = request.game;
+  const prompt_id = parseInt(request.params.prompt_id, 10);
 
-  game.broadcast_event_object('prompt', prompt);
+  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);
 
-  response.sendStatus(200);
+  const result = game.receive_answer(prompt_id,
+                                     request.session.id,
+                                     request.body.answers);
+  response.json(result);
 });
 
 Empathy.meta = {