Into this mix, I will add another interesting option: The V8 JS engine, running using the NME library in opengl mode. This cross-over mode is actually quite easy to implement because of 3 stars aligning: 1. The NME library has a external interface that uses opaque handles that map very naturally to the v8::Value *. 2. The haxe compiler makes it possible to program JS without losing your mind, and all the existing library code is valid for this target. and 3: The Google V8 JS engine has a clean API that makes it easy to embed (you would almost think they designed it that way – dispite the frugal documentation).
The benchmark I have chosen is the “Pentagonal Rain”, which is nice and stressful for the CPU. You can try for yourself – use the ‘5’ key to switch to this demo.
- Win32 Binaries (Neko, V8VM, CPP-compiled) (extract and drag the “.n” file onto neko.exe, or drag the “.js” onto the v8vm.exe)
|Chrome 4.1, JS||11|
|Opera 10.5.3, JS||18|
So as you can see, the V8VM option is actually quite viable as a scripting vm. Since there is a lot in common between neko, v8vm and cpp haxe targets and plugin architectures, it should be relatively straight forward to switch between them.
The JS demo can run on the iPhone. But just because you can do something, it doesn’t not mean you should \- at about 2 FPS on the title screen, I can’t imagine how slow it would run in the Pentagonal Rain demo. And probably not great for your battery either