Function Pointers in Ruby

[Retlaf]

Is it possible in Ruby/RGSS to have a variable which stores the address of a function? (Or a copy of a function itself?)

Purpose being so that when I call the variable, it returns something according to the function it (the variable) holds. I'm programming an AI system, and it would be fantastic if I could write AI scripts/methods and have the appropriate enemies store the methods that concern them (or addresses to those methods).

 

[Yeyinde]

All arguments in Ruby are passed by reference! Isn't it great?

 

[Retlaf]

All arguments in Ruby are passed by reference! Isn't it great?

Out of curiosity, is this true for basic data types, as well? Ah, sorry, never mind. No need to answer. It can be figured out with 2 minutes of experimental effort. :P

Thanks for the answer, but, I was wondering how functions/methods can be stored in variables (actually, just methods would be alright). Sorry for not being more clear.

 

[khmp]

I'm glad this was asked because I didn't know either.

class MyClass 
  def myMethod(i, j) 
    i + j 
  end 
end 

# instanciate a MyClass 
m = MyClass.new 

# get the symbol representing myMethod inside the MyClass m 
fp = m.method( :myMethod ) 

# call the method through the pointer fp 
fp.call(1, 2) # -> 3

That was taken directly from http://renaud.waldura.com/doc/ruby/idioms.shtml

Viva la runtime decisions!

Good luck with it Retlaf! :thumb:

 

[Retlaf]

That is fantastic. Thank you very much for your help.

 

[Anonymous]

This topic has been resolved. If Retlaf or any other users have any questions or further problems regarding this topic, please create a new thread about them.

Thank you!