Re: A Basic Question: A list player

[Christian W. <cwa...@gm...>]

chikitin wrote:
> I couldn't do pass by reference in pipmak:)

Lua always passes by reference. If you can explain what you're trying to 
achieve we may be able to show you how to do it in Lua.

> Is there any
> other way to ask pipmak to do some action as soon as a sound is stopped
> playing? 

No. As far as I am aware there is no such callback in OpenAL, so all 
Pipmak could do is polling whether the sound is still playing, and you 
can just as well do that yourself (as you're doing now).

> Hey Christian! now it works. You can try it yourself at:
> 
> http://faculty.uncfsu.edu/csarami/files/storage/Demo.pipmak - Random.zip

Well, it works as long as you keep the randomization turned off - if you 
enable it, you get errors because you're mixing nil values into the 
table. You're using a proper permutation function now and 30 is the 
wrong argument for that, it needs the table length (and since it can 
determine that on its own, there is no reason to pass it as an argument).

Some more tips:

- Defining a global function in one node (99) and using it in another 
(15) is a bit fragile. What if the player enters node 15 without ever 
having visited node 99, e.g. when starting from a saved game? (In your 
case, the older version of the function from main.lua would be used, but 
that looks like a leftover - and there is no guarantee that main.lua 
will have been run either.) If you want to define this function in a 
central place and use it from several nodes, you should put it into a 
separate file and include that in the node.luas using pipmak.dofile(). 
(In the future, "require" will work too.)

- If you want a function to be called when a node is entered (like in 
node 15), you shouldn't put it directly into node.lua. That currently 
works, but in the future node.lua may also be run at other times. You 
should put this code into an onenternode handler (there's one just a few 
lines above in node 15).

  -Christian