//traveller, wherever I may roam...
//by Aaron Steed
memory mem = new memory (0.0,0.0);
float m = 1.0;
float m2 = 1.0;
void setup() {
  size (400,400);
  background (214,196,146);
  stroke (160,50,70);
  fill (200,0,0);
  smooth();
  mem.stack (0.0,10.0);
  framerate(30);
}

void loop() {
  translate (200,200);
  req();
}//loop;

void req(){
  int i = mem.x.length - 1;
  float theta = random(TWO_PI);
  float newX = mem.x[i] + (cos(theta) * (50.0 * m2));
  float newY = mem.y[i] + (sin(theta) * (50.0 * m2));
  if (abs(newX)*m > width / 2){
    background (214,196,146);
    m = (width/2)/abs(newX);
    m2 = abs(newX)/(width);
     println(m2);
    drawIt(i);
  } else if (abs(newY)*m > height / 2){
    background (214,196,146);
    m = (height/2)/abs(newY);
    m2 = abs(newY)/(height);
    println(m2);
    drawIt(i);
  } else {
    drawIt(i);
  }
  mem.stack(newX,newY);
}//req;

void drawIt(int i){
  background (214,196,146);
  for (int i2 = 1; i2 < i+1; i2++){
    line (mem.x[i2-1]*m, mem.y[i2-1]*m, mem.x[i2]*m, mem.y[i2]*m);
  }
  ellipse((mem.x[i]*m)-5, (mem.y[i]*m)-5, 10, 10);
}

class memory{
  float [] x=new float[1];
  float [] y=new float[1];
  memory (float xt,float yt){
    x[0]=xt;
    y[0]=xt;
  }
  void stack (float xa, float ya){
    float[] tempx = new float[x.length + 1];
    System.arraycopy(x, 0, tempx, 0, x.length);
    tempx[x.length] = x[x.length-1];
    x = tempx;
    float[] tempy = new float[y.length + 1];
    System.arraycopy(y, 0, tempy, 0, y.length);
    tempy[y.length] = y[y.length-1];
    y = tempy;
    x[x.length-1]=xa;
    y[y.length-1]=ya;
  }//stack;
}//memory;