I'm using MIDI.js to build a music app that allows users to play piano through their keyboard.
Everything is working, but the problem I'm having is that the notes (called with MIDI.noteOn) only last 3 seconds, then just cut off. I'm trying to find a way to:
1- Make the note last for longer.
2- Make the note fade to nothing as opposed to just cutting off.
Could anyone point me in the right direction with there? There is so little documentation & discussion on MIDI.js.
Thanks in advance!
EDIT: The instrument name is acoustic_grand_piano
In theory, you need to call noteOff at the proper time.
In practice, MIDI.Plugin.js has this:
// FIX: needs some way to fade out smoothly..
root.noteOff = function (channel, note, delay) {
// var source = sources[channel+""+note];
// if (!source) return;
// source.noteOff(delay || 0);
// return source;
};
Related
I need to do a project for my IT course in school. I implemented a Jump N Run Game in Visual Studio Code with Javascript. It has 4 levels and works with html. My teacher now said that I have to add background music. And I have no idea where to start . I'm really not that good in IT and therefore I don't really know what information is needed in order to help me out with that question. I could send my whole folder in if needed. Thank you in advance.
P.S.: I need to be finished by the end of the week.
You can do this in JavaScript fairly easily.
// Create a variable to reference your music file
// that is stored in a new Audio object
const music = new Audio("./pathToMusicFile.wav");
// Add an event listener to detect user interaction
// and add a callback function that will run when
// the event occurs. I've added it to the window
// here, but you could add the event to the button
// that starts your game. I've named the callback
// function playMusic here
window.addEventListener("click", playMusic);
// Function to play the music
// in a continuous loop
function playMusic() {
// start the music
music.play();
// make the music loop continuously
music.loop = true;
}
// Note: If you want to stop the music at some point
// you can do it like this: music.stop()
// which you might want to do when each level of your
// game ends, and then perhaps, play a different tune
// for the next level
This should be enough to get you started, I hope it helps
my team and me are using Nightwatch to write end-to-end-acceptance tests for a microservice oriented architecture with a total of five systems.
After putting in some work to set it up and wiring together our services with docker-compose, it works great now and all tests are clicked through on the UI in a browser (not headless).
We got the idea to use this for demos, too (initial sprint demo etc) and wondered if there is some kind of setting (which we didn't found until now) or other possibility to simple add some artificial delay between the clicks/tests/assertions and everything.
Does someone have an idea?
You can add pauses in your suite wherever you want by using:
.pause(5000) // a pause for 5 seconds
//or alternately
.pause(this.timeout)
this.timeout can be set in your base-test-case.js
var timeout = 5000; // in your variable declarations
and then in that same file, on your base Class prototype you want:
before: function (client) {
this.timeout = timeout;
browser.pause between clicks or setValue to have nice delay, anything between 100-300 miliseconds is good
http://nightwatchjs.org/api#pause
I need to set the background color of one of the buttons in the form's ribbon. This isn't supported through Ribbon Workbench, so I have written following javascripts to achieve the same:
function setOpportunityRibbonsAppearance() {
var submitToForeCastButton = parent.document.getElementById("opportunity|NoRelationship|Form|sfw.opportunity.Button1.Button");
if (submitToForeCastButton != null) {
submitToForeCastButton.style.backgroundColor = "lightyellow";
}
}
I have registered this scripts in Form Load event. However the issue is that, I always get parent.document.getElementById as null only.
Surprisingly, I am able to see the control while running the parent.document.getElementById statement in the browser's console, and can also change the styling attributes.
Can anyone please suggest what could be wrong here?
P.S. - I understand document.getElementById is not recommended to use in CRM, however, I am left with no other choice while trying to change the appearance of some of the buttons.
Any help on this, will be much appreciated.
You could upload an icon with a yellow background, to keep everything supported. You won't see text on yellow but it might work for you. Easy and standard.
To keep it unsupported and ugly, you could just keep on trying until you make it, setInterval allows for a function to be repeated:
function setOpportunityRibbonsAppearance() {
var submitToForeCastButton = null;
var interval = setInterval(function(){
submitToForeCastButton = parent.document.getElementById("opportunity|NoRelationship|Form|sfw.opportunity.Button1.Button");
if(submitToForeCastButton != null) {
submitToForeCastButton.style.backgroundColor = "lightyellow";
clearInterval(interval);
}
}, 500); // Every 500ms. Adjust as needed, not too fast or browser will choke.
}
Its probably because your script is running before the page is fully loaded.
Try adding a delay to the to the function Put a Delay in Javascript
I'm using the Howler js library to set a player in an app running through Electron. First everything seemed to work well, but after a few weeks using the app, a bug occurs repeatedly, but not constantly : the pause() function doesn't work. Here's some piece of code :
Initialization :
var is_paused = true;
var currentTrack = "track1";
var tracks = {"track1" : new Howl({urls: ['path/to/track1.mp3']}),
"track2" : new Howl({urls: ['path/to/track2.mp3']}),
"track3" : new Howl({urls: ['path/to/track3.mp3']})
};
Then I have a few buttons for play/resume, pause, stop, and play a specific track :
$('#playS').click(function(){
if (is_paused){
tracks[currentTrack].play();
is_paused = false;
}
});
$('#pauseS').click(function(){
tracks[currentTrack].pause();
is_paused = true;
});
$('.trackBtn').click(function(){
tracks[currentTrack].stop();
currentTrack = $(this).attr('id');
tracks[currentTrack].play();
is_paused = false;
});
The problem is that sometimes (generally after 40-45 min of a track playing), the pause() function just do nothing, which is really annoying cause I need to pause the track and play another 30 sec file and then resume the current track. I checked the console while the bug occurs, it says absolutely nothing. I have no idea where the bug comes from, there's not a lot of information about how works the library. I really need some help here, thank's in advance.
EDIT : one more thing, when pause() doesn't work, if I click play() the track plays from the begining, and I have control on this second instance of the track. It's like the first instance has reached end, but still playing.
Without knowing what version of Howler you're using, or what other code might be messing things up, there is one thing I think might help: You don't need to track the paused state. The "playing" method takes care of that. I've made it work using something like this:
// If it's paused, it's not playing, so...
paused = !myHowlInstance.playing();
Another thing I noticed is that you have currentTrack = $(this).attr('id'); in your (I think it's a) stop button. Unfortunately I don't know JQuery well enough to know if there's anything wrong with that (I'm more of a Dojo fan myself). But it looks like currentTrack may be set to some value not in your list (which would break tracks[currentTrack]). You might want to go into the console and type tracks["track1"], currentTrack etc. to see their values. You can even do tracks[currentTrack].play(); and see what happens. I wasn't sure if you knew you could do that (it was a huge help to me when I found out about it).
And as far as the "un-pausing" starting from the beginning, I'm currently struggling with it myself; at this time there's no clear way to do this (no resume(), pause(false) etc.), and I've seen a few more questions on the subject on Google and SO, so you're not alone. I've experimented with the seek method, but with no luck. I'll post a comment if/when I reach a breakthrough on that. :)
EDIT: I figured out the play-from-beginning thing. It does involve "seek", and also the whole "instance ID" concept (which I never really understood the importance of from the documentation).
Here's an example from a project I'm working on (also a game); it doesn't involve JQuery (sorry), but it should give you the gist of how to fix the problem.
var myBgMusic = new Howl(...);
var myMusicID = myBgMusic.play(); // The docs say play() returns an ID, and I'll be passing that to "seek" later.
var paused = false;
var saveSeek;
function TogglePause() {
if (paused) {
myBgMusic.play(myMusicID);
myBgMusic.seek(saveSeek, myMusicID);
} else {
myBgMusic.pause();
saveSeek = myBgMusic.seek(myMusicID);
}
};
I am running Timbre.js successfully on iOS 9.2 by coupling it with AudioContextMonkeyPatch, and I am trying to use a slightly modified version of code found here: http://mohayonao.github.io/timbre.js/interval.html. The code (to save lookup) is:
var freqs = T(function(count) {
return [220, 440, 660, 880][count % 4];
});
var osc = T("sin", {freq:freqs, mul:0.5});
var env = T("perc", {a:50, r:500}, osc).bang();
var interval = T("param", {value:500}).linTo(50, "30sec");
T("interval", {interval:interval}, freqs, env).start();
env.play();
What I am trying to figure out is how to start and then stop and then re-start the sound. I'm trying to see how the developer's example 'Pause' button works, but I can't seem to locate that code example. I do basic things tike "T().stop(); env.pause();" followed by "env.play();" (in separate onClick events), and I end up with multiple signals on the second play event. Really frustrating. The documentation suggests a 'removeAll' will remove all items loaded into Timbre() (or T()?), but applying this in my stop function does not provide a satisfactory result either.
Anyone know the correct way to pause and restart this script snippet?
In order to start and stop the sequence you need to assign the last T function to a variable. You can then use .start() and .stop() as you like:
code....
var interval = T("param", {value:500}).linTo(50, "30sec");
var audioSequence = T("interval", {interval:interval}, freqs, env);
env.play();
audioSequence.start(); // Start the Sequence
interval.stop(); // Stop the interval
audioSequence.stop(); // Stop the Sequence
interval.start(); // Restart the Interval
audioSequence.start(); // Restart the Sequence
Its a little confusing at first as play()/pause() is used for oscillators or drums for example and start()/stop() is used for intervals.