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Index › Programming Questions & Help › Syntax Questions › void setup() error

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void setup() error (Read 1003 times)

aqua_scummm

void setup() error
Nov 8^th, 2005, 12:52am

I am getting unexpected void errors when I have delcarations above it. Does it have to be the first line of code? What do I do if I need global variables across it and functions such as draw() and mousereleased()? Is there a way to declare vars in setup() and have other functions such as draw() and event functions access them? Or even send parameters to those latter functions?

Thanks!

REAS

Re: void setup() error
Reply #1 - Nov 8^th, 2005, 2:31am

you can declare and assign primitive variables outside of setup() and draw(). these are global variables and can be assigned and accessed within both setup() and draw(). if you declare a variable inside setup, it can only be accessed inside setup. check out the example for variable scope:

http://processing.org/learning/examples/variablescope.html

aqua_scummm

Re: void setup() error
Reply #2 - Nov 8^th, 2005, 6:50am

what about the error and possibly having declarations above it? I thought I remembered creating vars above setup() :/

edit: forgot to say thank you

there is no other way to pass vars to setup or anything though?

the following gives me an unexpected token: void error at the setup () line
the error doesnt appear if i move declarations to inside functions
Code:



color bgc =  color (100,50,0);
PFont maintext;
maintext = loadFont ("CG18.vlw");
PSound song;
song=loadSound ("song1.wav");
boolean playing=false;



void setup ()
{
  colorMode(RGB,255,255,255);

  if (online)
  {
    framerate(8);
  }
  else
  {
    framerate(24);
  }
  size (200, 48);
  background (255,266,255);
  loop();
}

void draw()
{

    background (bgc);   
}


void mouseReleased()
{
  
  if (playing==true)
  {
    song.loop();
    playing=false;
  }
  else
  {
    song.play();
    playing=true;
  }
}

« Last Edit: Nov 8^th, 2005, 7:54am by aqua_scummm »

aqua_scummm

Re: void setup() error
Reply #3 - Nov 8^th, 2005, 7:56am

aqua_scummm wrote on Nov 8^th, 2005, 6:50am:

what about the error and possibly having declarations above it I thought I remembered creating vars above setup() :/

edit: forgot to say thank you

there is no other way to pass vars to setup or anything though I guess i could define a class wide variable (is that static) and just access that through a instance of a class in each function... sounds like a royal pain though

the following gives me an unexpected token: void error at the setup () line
the error doesnt appear if i move declarations to inside functions
Code:



color bgc =  color (100,50,0);
PFont maintext;
maintext = loadFont ("CG18.vlw");
PSound song;
song=loadSound ("song1.wav");
boolean playing=false;



void setup ()
{
  colorMode(RGB,255,255,255);

  if (online)
  {
    framerate(8);
  }
  else
  {
    framerate(24);
  }
  size (200, 48);
  background (255,266,255);
  loop();
}

void draw()
{

    background (bgc);   
}


void mouseReleased()
{
  
  if (playing==true)
  {
    song.loop();
    playing=false;
  }
  else
  {
    song.play();
    playing=true;
  }
}

st33d

Re: void setup() error
Reply #4 - Nov 8^th, 2005, 11:55am

May I relate the box analogy?

Consider your variables as boxes. Before setup() you say what boxes you're going to need. Then in the setup you fill up those boxes. You can pre-fill simple boxes like int, String, float, boolean, etc. But more complicated ones can't be done like that (array contents, PImage, PFont, etc).

The following should run smoothly (touching wooden desk).
Code:


color bgc = color (100,50,0);;
PFont maintext;
PSound song;
boolean playing = false;

void setup ()
{
  colorMode(RGB,255,255,255);
  maintext = loadFont ("CG18.vlw");  
  song=loadSound ("song1.wav");
  if (online)
  {
    framerate(8);
  }
  else
  {
    framerate(24);
  }
  size (200, 48);
  background (255,266,255);
  loop();
}

aqua_scummm YaBB Newbies Offline Posts: 6	Re: void setup() error Reply #5 - Nov 9^th, 2005, 12:43am thanks guys! sorry about the double post... why is it that we cant do more complex ones before setup? Does it have to do with whether its a class or what?

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