You can pass Nil to all functions that ask you to specify a vacant identifier for the new Hollywood object. In that case, Hollywood will automatically choose a vacant identifier and return it to you. This is especially useful for larger projects. If your project is small it is more convenient to use hard-coded ids, e.g.
LoadBrush(1, "brush1.iff") LoadBrush(2, "brush2.iff") LoadSample(1, "sample.wav") OpenFile(1, "file.txt")
However, when your project grows larger id management can get quite confusing
and nobody wants to mess around with a myriad of different ids. Thus, you
can simply pass Nil instead of an id and Hollywood will return an id for the
new object that is guaranteed to be unique because it uses the special variable
#LIGHTUSERDATA. That way, it is ensured that no id conflicts will arise
because if you pass Nil, Hollywood will not choose an id from the id pool (i.e.
integer numbers from 1 to n) but it will create unique ids. Thus, all normal
ids will still be available for use, e.g.
brush1 = LoadBrush(Nil, "brush1.iff") brush2 = LoadBrush(Nil, "brush2.iff") sample1 = LoadSample(Nil, "sample.wav") file1 = OpenFile(Nil, "file.txt")
file1 will not receive any human
readable ids but special ids of type
#LIGHTUSERDATA. Thus, all human readable
ids from 1 to n will still be available. Therefore, you do not have to worry
about any id conflicts when passing Nil to object creation function, because
they cannot occur as Hollywood uses two separate id dimensions: One human
readable that is only used when you pass an id to the object creation functions
and one opaque id mechanism that is used when you pass Nil to the object