garbomuffin/nbsplayer

It's like Note Block Studio, but as a website.

nbsplayer's Issues

Needs Selections

I don't like having to delete all my notes and replacing them.

Negitive tempo with loop on should loop to the end instead of continuing.

Support saving .nbs files

.nbs files can currently be loaded but cannot be saved. Saving should be supported.

Support custom instruments

nbs files can contain custom instruments. nbsplayer should support this.

Support playing in background

In (almost?) all browsers unfocused tabs are throttled. In this case requestAnimationFrame is throttled (for good reasons) which prevents the song from advancing.

I don't know what other methods there are to play things in browsers, and especially none that wouldn't require reworking lots of stuff.

Workaround is of course to pop the out into its own window.

Add keyboard shortcuts

• Space - start/pause
• Escape - close overlay if dismissable
• Other keys - set note (#3)

Basic editing

• Left click to place
• Right click to delete

nbsjs had this, and it's time to port it to nbsplayer.

Optimizing canvas rendering

Canvas rendering could be faster.

• Cache groups of notes in a single texture. A separate drawImage() for every note is very slow, so grouping notes together once and rendering them all together can be significant for speed.

• Use WebGL when available. A few small drawImage() and fillRect() shaders are all that would be needed. These would probably be much faster than drawImage() on a 2d canvas. 2d canvas can be used if a WebGL canvas is not available.

• The whole layer/note loop is probably slower than it could be.

Improve horizontal scrolling

Horizontally scrolling the song when the user uses a trackpad or the like would be good.

Massive issue; Lack of big chungus

Testing

Could use some unit tests or whatever. The UI might be hard to test but NBS.js and editor.js should be possible to test.