hello im having some problems with a program, ive made an array full of agents that move randomly in the screen, i want that when each agente collide with other agent it can change its color . Ive made this program but im getting wierd behaivors , agents dont change the color when its expected . do anybody know why is that?



int numAgente= 12;

Agente[] arreglo =new Agente[numAgente];

void setup(){
size(800,700);
// noStroke();
background(238, 282, 299);
for (int i=0; i<numAgente; i++){

arreglo[i] = new Agente();

}}

void draw(){

for (int k=0; k<numAgente; k++){
 arreglo[k].dibuja();
}
}

class Agente{
float x= random(800);
float y= random (700 );
float dista;
 color coloryo ;
 
void dibuja(){
x = x + random(20) - 10;
y = y + random(20) - 10;

fill(coloryo);
ellipse(x , y ,20,20);
for (int i=0; i<numAgente; i++){

for (int j= 0 ; j <numAgente; j++){
 if ( i !=  j){
dista = sqrt (((arreglo[i].x - arreglo[j].x) * (arreglo[i].x - arreglo[j].x) )+  ((arreglo[i].y - arreglo[j].y) * (arreglo[i].y - arreglo[j].y)));
 if (dista < 26){
 //  println(arreglo[i].x);
 //  arreglo[j].coloryo =  color(222, 40, 0);
   arreglo[i].coloryo =  color(222, 40, 0);

}
else
{
//arreglo[j].coloryo =  color(2, 40, 0);
arreglo[i].coloryo =  color(2, 40, 0);
}
}
}
}
}
}

I saw something like that in the past. You might be interested by this thread too: No idea what could be the problem!!