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Hi
I have done a little bit of work with Lua C API bindings, that all went pretty smoothly, but I am having great difficulty understanding userdata and light userdata. I have not found the examples online easy to follow or very helpful, so I am hoping someone on this list might be kind enough to help out. The example I want to implement is to expose to Lua a C structure so Lua can access the individual data variables struct foo { int x; int y; int z; }; struct foo myFoo; -------------------------------------------------------- -- In Lua I want to do something like local x = myFoo.x local y = myFoo.y -------------------------------------------------------- As I dont want Lua to create myFoo objects, or manage their memory, I am thinking this example should be implemented with light userdata, but dont know how to go about this. This example is a slightly simplified version of what I need to do, in reality I have a C array, such as struct foo myFoo[3]; so ultimately I would want to do something like this in Lua, local x = myFoo[2].x. I am not sure how much the array version complicates the solution for the non array version ? Any example C API code and explanation would be most appreciated if anyone fancies brushing up their skills to try this out ? Regards Geoff |