Variable Problem

Muhasaresa (74)
Hi everone :D

I am making a drag and drop piece of code in Processing and it uses code similar to C++. My problem is that I cannot change the value of variables x_lim_a, x_lim_b, y_lim_a and y_lim_b inside of the if statement. Is it something to do with the positioning that is causing problems? The 4 variables are meant to change to 1000, 0, 1000 and 0 respectively but they do not please can i have some help?

Here is my code so far: 
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PImage bg;
PImage one;
PImage cursor;
PImage onecopy;


void setup(){
  size(1000, 1000);
  frameRate(30);
  bg = loadImage("bg.jpg");
  one = loadImage ("one.png");
 cursor = loadImage ("cursor.png");
 onecopy = loadImage ("one copy.png");
  smooth();
}

void draw(){
  
 
  int x_lim_a = 320;
  int x_lim_b = 50;
  int y_lim_a = 500;
  int y_lim_b = 250;
  
  int a = 100;
  int b = 300;
  
  
  noCursor();
  background(bg);
 
 
  image(cursor, mouseX, mouseY);
  
  if ((mousePressed == true) && (mouseX < x_lim_a) && (mouseX > x_lim_b) && (mouseY < y_lim_a) && (mouseY > y_lim_b))
 { 
   
   x_lim_a = 1000;
   x_lim_b = 0;
   y_lim_a = 1000;
   y_lim_b = 0;
   
   
 a = mouseX; b = mouseY;
 }
 

 
 image(one, a, b);
 image(cursor, mouseX, mouseY);


}




Thanks,

Muhasaresa
LB (13399)
How are you testing this and checking the values?
closed account (o1vk4iN6)
Make sure the your mouse x and y values are in the scope you want them to be in. Just have it print the data to the screen. Not much that can go wrong with a simple if statement like that other than it's the wrong comparison or the data isn't what you think it is.

Not entirely sure what exactly your if statement is suppose to do. It looks like you'd want your int's to be static since right now they are local and their values are not kept after draw is returned.
Last edited on
eypros (329)
it uses code similar to C++

What does this supposed to mean? Either you use C++ or not. What does similar mean?
Last edited on
Muhasaresa (74)
"Similar" means two or more things have some properties in common.

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