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Whats the use for LLJS ? I dont really get it. So its not meant to be used in web development but for things like games or complete VMs. But isnt it much simple

by kayoone 14y ago

Whats the use for LLJS ? I dont really get it. So its not meant to be used in web development but for things like games or complete VMs. But isnt it much simpler for those cases to compile existing C codebases with emscripten instead of rewriting everything in LLJS ? Even if you start today with writing a new game engine, wouldnt it make more sense to use C++ and be able to target any platform there is instead of just the browser?

jlongster 14y ago
The main use for something like LLJS is to allow you to target asm.js with new code that you write. It's true that it's probably not the best idea to completely rewrite a 3d engine in it (right now), but it gives you a quick way to rewrite core parts of an intensive app (like a 3d game) for high performance. There are "inner loops" that could benefit from a small amount of LLJS. As the post says, it's a proof of concept and a way to open up asm.js to people who want to tinker with it without compiling C code with emscripten.
- kayoone 14y ago
  I see, so the main benefit vs compiling c to asm.js is that the development process is easier because you dont need to manually compile. Sounds interesting to use as a scripting language inside a c based game engine. So the core of the engine would be directly compiled to asm.js while the game logic scripting could be done in LLJS to be able to live-test your game.
  - jlongster 14y ago
    That's certainly a possibility! It would be neat to see powerful debugging tools develop, after the language stabilizes. I also like the idea of somehow linking it with emscripten-compiled code so that it can be used as a sort of scripting language. I'd like to explore the possibility of porting some of the C toolchain to the browser too, though. It's possible that it could be quite successful, and in that case LLJS would target people who just want to write small parts of there app for asm.js.
    - kayoone 14y ago
      sounds really exciting, keep up the great work!
azakai 14y ago
For a big codebase, yes, compiling C/C++ using emscripten or such is a good idea. But if you want to write a tiny part of a normal JS application in something faster, lljs is convenient. Sort of like you would write inline assembly in C perhaps.

by kayoone 14y ago

jlongster 14y ago

The main use for something like LLJS is to allow you to target asm.js with new code that you write. It's true that it's probably not the best idea to completely rewrite a 3d engine in it (right now), but it gives you a quick way to rewrite core parts of an intensive app (like a 3d game) for high performance. There are "inner loops" that could benefit from a small amount of LLJS. As the post says, it's a proof of concept and a way to open up asm.js to people who want to tinker with it without compiling C code with emscripten.

kayoone 14y ago
I see, so the main benefit vs compiling c to asm.js is that the development process is easier because you dont need to manually compile. Sounds interesting to use as a scripting language inside a c based game engine. So the core of the engine would be directly compiled to asm.js while the game logic scripting could be done in LLJS to be able to live-test your game.
- jlongster 14y ago
  That's certainly a possibility! It would be neat to see powerful debugging tools develop, after the language stabilizes. I also like the idea of somehow linking it with emscripten-compiled code so that it can be used as a sort of scripting language. I'd like to explore the possibility of porting some of the C toolchain to the browser too, though. It's possible that it could be quite successful, and in that case LLJS would target people who just want to write small parts of there app for asm.js.
  - kayoone 14y ago
    sounds really exciting, keep up the great work!

azakai 14y ago

For a big codebase, yes, compiling C/C++ using emscripten or such is a good idea. But if you want to write a tiny part of a normal JS application in something faster, lljs is convenient. Sort of like you would write inline assembly in C perhaps.