From 6dcdee137ccf391989a1c83f1e7df6b4f71631e2 Mon Sep 17 00:00:00 2001
From: Carl Worth <cworth@cworth.org>
Date: Sun, 14 Jun 2020 16:42:33 -0700
Subject: [PATCH] Implement an idle event for when nobody has been typing for a
 while

During the answering phase, if no player has been active, (that is, by
submitting an "answering" event), for 30 seconds, then submit an
"answering-idle" event to all players.
---
 empathy.js | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/empathy.js b/empathy.js
index eeb33c2..79a0c44 100644
--- a/empathy.js
+++ b/empathy.js
@@ -11,6 +11,7 @@ class Empathy extends Game {
       active_prompt: null,
       players_answered: [],
       players_answering: new Set(),
+      answering_idle: false,
       end_answers: new Set(),
       ambiguities: null,
       players_judged: [],
@@ -19,6 +20,7 @@ class Empathy extends Game {
       scores: null
     };
     this.answers = [];
+    this.answering_idle_timer = 0;
     this.next_prompt_id = 1;
     this.equivalencies = {};
   }
@@ -51,6 +53,7 @@ class Empathy extends Game {
     this.state.active_prompt = null;
     this.state.players_answered = [];
     this.state.players_answering = new Set();
+    this.state.answering_idle = false;
     this.state.end_answers = new Set();
     this.state.ambiguities = 0;
     this.state.players_judged = [];
@@ -157,6 +160,16 @@ class Empathy extends Game {
     if (prompt !== this.state.active_prompt)
       return { valid: false, message: "Prompt no longer active" };
 
+    if (this.answering_idle_timer) {
+      clearTimeout(this.answering_idle_timer);
+    }
+    if (! this.state.answering_idle) {
+      this.answering_idle_timer = setTimeout(() => {
+        this.state_answering_idle = true;
+        this.broadcast_event_object('answering-idle', true);
+      }, 30 * 1000);
+    }
+
     /* Notify all players that this player is actively answering. */
     this.state.players_answering.add(player.name);
     this.broadcast_event_object('player-answering', player.name);
-- 
2.43.0