int nrOfWorms=500;
Wormtype[] worm=new Wormtype[nrOfWorms+1];

color[][] traces=new color[600+1][300+1]; // array for storing background+wormtrace colors
float bgcR,bgcG,bgcB;
color backGroundColor;
boolean paused=false; 

void setup() {
  size(600,300,P3D);
  bgcR=238;
  bgcG=229;
  bgcB=191; 
  backGroundColor=color(bgcR,bgcG,bgcB); 
  // FILL TRACE ARRAY WITH BACKGROUND COLOR:
  for (int x=1;x<=width;x++) { 
    for (int y=1;y<=height;y++) {
      traces[x][y]=color(238,229,191);
    } 
  }
  // CREATE WORMS:
  for (int i=1;i<=nrOfWorms;i++) {
    worm[i]=new Wormtype(i);
  }
}

void draw() {
  // CLEAR SCREEN:
  background(backGroundColor);
  // DRAW TRACES:
  for (int x=1;x<=width;x++) { 
    for (int y=1;y<=height;y++) {
      set(x,y,traces[x][y]);
    } 
  }
  // DRAW WORMS
  for (int i=1;i<=nrOfWorms;i++) {
    worm[i].update();
  }
}





void pointScreen(float x,float y,boolean trace, color wormColor) {
  color tCol;
  while (x<1) {
    x+=width;
  } 
  while (x>width) {
    x-=width;
  }
  while (y<1) {
    y+=height;
  } 
  while (y>height) {
    y-=height;
  }
  point(x,y);

  if (trace) {
    tCol=traces[int(x)][int(y)];
    tCol=color((15*red(tCol)+red(wormColor))/16.0,(15*green(tCol)+green(wormColor))/16.0,(15*blue(tCol)+blue(wormColor))/16.0);
    traces[int(x)][int(y)]=tCol;
  }
}

float warpedX(float input) {
  while (input<1) {
    input+=width;
  } 
  while (input>width) {
    input-=width;
  }
  return input;
}

float warpedY(float input) {
  while (input<1) {
    input+=height;
  } 
  while (input>height) {
    input-=height;
  }
  return input;
}