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Importing Lua functions into Java with LuaJ.


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#1 PuppyKevin   Members   -  Reputation: 103

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Posted 29 June 2012 - 07:12 PM

Hi,

I have a Lua file filled with a couple of functions, and I'm using LuaJ to execute these scripts via Java. I'm able to get Java functions to work within Lua, but how would I call a Lua function from Java?

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#2 Kyan   Members   -  Reputation: 395

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Posted 29 June 2012 - 11:11 PM

Depends on how you're using the API. Straight from the example in the Javadocs, you'd do something like:
LuaValue globals = JsePlatform.standardGlobals();
LuaValue sqrt = globals.get("math").get("sqrt");
LuaValue print = globals.get("print");
LuaValue d = sqrt.call( a );
print.call( LuaValue.valueOf("sqrt(5):"), a );
It looks like LuaValue is your transport to the Lua layer - it contains most of the overloads you'd need. You grab the function you want and then execute a call on it with the arguments you wish to pass.




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