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Member Since 16 Mar 2013
Offline Last Active Mar 17 2013 02:05 PM

Topics I've Started

Individual scripts per object in Lua

16 March 2013 - 01:11 PM


in my current project I have to deal with a graph where each node should provide the capability to run different user defined behaviours on given triggers. An XML definition could (for example) look like this:


<node name="node 1">
   <scripts source="function onEnter() print('do something') end"/>

<node name="node 2">
   <scripts source="function onEnter() print('do something different') end"/>


So as you can see the function onEnter (which will be called when entering the node) appears two times with different implementations through these scripts. While I could solve the problem by having one state per object, this would mean to have a lot of states spread throughout the application which does not seem optimal to me.


I was also thinking to parse the scripts before sending them to Lua (through luaL_loadstring) and replace all functions with dynamically generated functions (e.g. onEnter<UID> instead of onEnter) but somehow I got the feeling that there must be a better solution for this problem. 


I'd really be thankful for any guidance you can give me.