Re:Impact JavaScript Game Engine for iOS
by AntiRush on Monday October 11, 2010 @12:25PM
(#1780181)
Yep, I hit this roadblock too. For my similar project I ended up using a non-jit version of Spidermonkey for embedded Javascript. Interpreted performance is pretty poor in comparison to jit though, and I ended up moving to a much higher level Javascript API to share between canvas and native implementations. It runs at 60 fps on 2nd gen hardware now with moderate (1 - 2 hundred sprites).
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Just thinking out loud:
I wonder how feasible it would be to pre-compile the Javascript to machine code before distributing it? Maybe someone determined enough could probably hack one of the existing JIT engines to emit executable machine code to a file?
For a restricted subset of Javascript it wouldn't be that hard.
I'm not sure that solves the iphone problem though - I don't think it's kosher to use non c/c++/objc code. A Javascript to C compiler would work fine, though. That would be quite a bit more work, though.
[Edit]As pointed out below, it might well be ok. I guess you'd have to somehow get the generated machine code into a static library and link it with your application. That might work.