From 925608268cf758b262df61f48e081e82c0ad6d80 Mon Sep 17 00:00:00 2001
From: Chris Xiong <chirs241097@gmail.com>
Date: Tue, 6 Oct 2020 20:07:59 +0800
Subject: I'm definitely stupid.

---
 sensfreq/main.js | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

(limited to 'sensfreq')

diff --git a/sensfreq/main.js b/sensfreq/main.js
index 6dc431e..a50ae95 100644
--- a/sensfreq/main.js
+++ b/sensfreq/main.js
@@ -1,6 +1,7 @@
 const audioCtx = new (window.AudioContext || window.webkitAudioContext)();
 
 e = s => document.getElementById(s);
+n2n = n => ["C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B"][n];
 
 let ans = false;
 let nq = 0;
@@ -9,23 +10,24 @@ let nc = 0;
 function init()
 {
 	e("gench").disabled = false;
-	e("response").style.display="none";
+	e("response").style.display = "none";
+	e("prompt").innerHTML = " ";
 	reset_stats();
 	loadTheme();
 }
 
 function play_notes(freq, t, arpt)
 {
-	const stop_notes=function(g, o)
+	const stop_notes = function(g, o)
 	{
 		o.stop();
 		g.disconnect(audioCtx.destination);
 		o.disconnect(g);
 	}
-	const play_note=function(f)
+	const play_note = function(f)
 	{
 		const gn = audioCtx.createGain();
-		gn.gain.setValueAtTime(.5/freq.length, audioCtx.currentTime);
+		gn.gain.setValueAtTime(.5 / freq.length, audioCtx.currentTime);
 		gn.gain.linearRampToValueAtTime(0, audioCtx.currentTime + t / 1000.);
 		gn.connect(audioCtx.destination);
 		const osc = audioCtx.createOscillator();
@@ -39,7 +41,7 @@ function play_notes(freq, t, arpt)
 	freq.forEach(function(f){setTimeout(play_note.bind(null, f), arpt * (i++));});
 }
 
-get_freq = n => 440 * Math.pow(Math.pow(2, 1./12), n-69)
+get_freq = n => 440 * Math.pow(Math.pow(2, 1. / 12), n - 69)
 
 function generate_challenge()
 {
@@ -71,20 +73,22 @@ function generate_challenge()
 	while (f.length < nnotes)
 	{
 		let n = Math.floor(Math.random() * (maxrange - minrange + 1)) + minrange;
-		if (l.indexOf(n)!=-1)
+		if (l.indexOf(n) != -1)
 			continue;
 		ans |= ((n % 12) == Number(e("note").value));
 		f.push(get_freq(n));
 	}
-	f.sort((a,b)=>a-b);
+	f.sort((a,b)=>a - b);
 	play_notes(f, 1000, e("arp").checked ? 50 : 0);
 	e("gench").disabled = true;
-	e("response").style.display="";
+	e("response").style.display = "";
+	e("prompt").innerHTML = nnotes == 1 ? `Was the note you just heard ${n2n(Number(e("note").value))}?`
+	                                    : `Did the chord you just heard contain the note ${n2n(Number(e("note").value))}?`;
 }
 
 function update_stats()
 {
-	e("stats").innerHTML=`You got ${nc} of the ${nq} challenges correct.`
+	e("stats").innerHTML = `You got ${nc} of the ${nq} challenges correct.`;
 }
 
 function reset_stats()
-- 
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