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-rw-r--r--src/assets/trading-in-the-rain/MusicBox.js70
1 files changed, 0 insertions, 70 deletions
diff --git a/src/assets/trading-in-the-rain/MusicBox.js b/src/assets/trading-in-the-rain/MusicBox.js
deleted file mode 100644
index a30074c..0000000
--- a/src/assets/trading-in-the-rain/MusicBox.js
+++ /dev/null
@@ -1,70 +0,0 @@
-var midiLoaded = false;
-function loadMIDI() {
- MIDI.loadPlugin({
- soundfontUrl: "/assets/trading-in-the-rain/soundfont/",
- instrument: "acoustic_grand_piano",
- onprogress: (state, progress) => {
- console.log("MIDI loading...", progress*100, "%");
- },
- onsuccess: () => {
- console.log("MIDI is ready to be used");
- MIDI.setVolume(0, 127);
- midiLoaded = true;
- },
- });
-}
-
-function MusicBox(priceDist, volumeDist) {
- this.priceDist = priceDist;
- this.volumeDist = volumeDist;
-
- // clamp the keyboard so we're not using the very low notes, they don't sound
- // good.
- const noteRange = {
- //low: 21,
- //low: 36, // C2
- low: 60, // C4, middle C
- high: 108
- };
-
-
- function makeScale(tpl) {
- tplObj = {};
- for (i in tpl) {
- tplObj[tpl[i]] = true;
- }
-
- let scale = [];
- for (let note=noteRange.low; note<=noteRange.high; note++) {
- let key = MIDI.noteToKey[note].replace(/\d+$/, "");
- if (tplObj[key]) {
- scale.push(note);
- }
- }
- return scale;
- }
-
- //this.scale = makeScale(["C", "D", "E", "F", "G", "A", "B"]); // cMajor
- //this.scale = makeScale(["D", "E", "Gb", "G", "A", "Db"]); //dMajor
- //this.scale = makeScale(["C", "D", "E", "G", "A"]); // cMajor pentatonic
- this.scale = makeScale(["F", "G", "A", "C", "D"]); // fMajor pentatonic
-
- this.playNote = (note, holdFor) => {
- if (!midiLoaded) return;
- let velocity = 127;
- MIDI.noteOn(0, note, velocity, 0);
- MIDI.noteOff(0, note, holdFor);
- };
-
- this.playTrades = (trades) => {
- if (this.priceDist.length == 0) return;
- for (let i in trades) {
- let noteIdx = this.priceDist.distribute(trades[i].price, 0, this.scale.length-1);
- noteIdx = Math.round(noteIdx);
-
- let holdFor = 0.25 + this.volumeDist.distribute(trades[i].volume, 0, 1.75);
- let note = this.scale[noteIdx];
- this.playNote(note, holdFor);
- }
- };
-}