Glenn Maynard
3cae60d6fd
Each actor type needs to evaluate attributes; only a few do. Strings are handled with the "@foo()" notation. Instead, after loading an XML file for loading as an actor, precompile all XML attributes as Lua expressions. The primary difference to code is: - previously, Attr="string" would act as a string if it was being read as one. Now, specify Attr='"string"'. Attr="@string" is a shorthand. (note that @strings will not be parsed as Lua strings, so can not use Lua escape characters) - previously, Attr="@func()" would evaluate func(), and the value of the attribute would be the return value of the function. This was only supported for a few attributes. Now, say Attr="func()", and this will work for all fields. - Attributes of other types are unchanged, except that all attributes may be Lua expressions, eg. Width="SCREEN_WIDTH". - Attributes names ending with "Command" are special, like metrics. Prefix "%" to disable this. This brings XML handling in line with metric handling. (This is an intermediary step; I have another idea that follows from this that should eliminate the annoying "'foo'"/"@foo".)