CODEWITHSUNDEEP
lua
Hecedu
Hecedu

Reputation: 21

Lua: functions and user input?

I am trying to do a simple program in lua that aims to return a string with certain values based on the user input, however I am having issues scripting this.

For example, if I compile

person1 = {
name = "bob" ,
age = 70 ,
hair = "black" ,
};
person2 = {
name = "dan",
age = 40 ,
hair = "blonde" , 
};
describe = function(parent)
print ( "hello " .. parent.name .. " your are " .. parent.age .. " years old
and your hair color is " .. parent.hair )
end
print ("who are you") ;
answer = io.read ();
describe (answer)

I would expect that if I wrote person1 as the input the script would return a string that reads:

hello bob you are 70 years old and your hair color is black

However it instead returns an error.

The question is, what can I do to fix this? What is the right way to use user input in Lua?

Upvotes: 1

Views: 982

Answers (1)

Jakuje
Jakuje

Reputation: 25926

You would have to pass the object to the function, not the name. Or search for the object in the global scope:

person1 = {
    name = "bob" ,
    age = 70 ,
    hair = "black" ,
};
person2 = {
    name = "dan",
    age = 40 ,
    hair = "blonde" , 
};
describe = function(parent)
    parent = _G[parent]
    print ( "hello " .. parent.name .. " your are " .. parent.age .. " years old and your hair color is " .. parent.hair )
end
print ("who are you") ;
answer = io.read ();
describe (answer)

Working example: http://ideone.com/UJxnpx

Upvotes: 1

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