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FretButtons.js
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FretButtons.js
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class FretButtons {
constructor(container, config, speed, animationManager) {
this.container = container;
this.config = config;
this.speed = speed;
this.animationManager = animationManager;
this.elms = [];
this.lines = [[],[],[],[],[]];
this._initButtons();
}
_initButtons() {
let offset = this.container.clientWidth * 0.085;
let pos = offset;
for (let i=0; i<5; i++) {
let img = document.createElement('img');
img.src = this.config.releasedPrefix + i + this.config.postfix;
img.className += "fretButton";
img.style.left = pos + "px";
pos += (offset*1.94);
this.container.appendChild(img);
this.elms.push(img);
}
}
changeState(button, state) {
let prefix = "";
if (state == "pressed") {
prefix = this.config.pressedPrefix;
}
if (state == "plucked") {
prefix = this.config.pluckedPrefix;
let temp = new NoteLines(button, this.container, this.speed);
this.lines[button].push(temp);
this.animationManager.add(temp);
}
if (state == "released") {
prefix = this.config.releasedPrefix;
let ln = this.lines[button].shift();
if (ln != null) {
ln.stop();
}
}
this.elms[button].src = prefix + button + this.config.postfix;
}
}