Agar.io+ [Agar.io Expansion]

import processing.net.*;
import processing.sound.*;

PFont Righteous;
SoundFile mainLoop;
int lineChoice, bgChoice, k, textChoice, massBool, massRegrowChance, pMass;
int gridLine[] = {224, 32};
int bg[] = {255, 0};
int textColor[] = {0, 255};
float xPos, yPos, x, y, speed, transitionColor;
ArrayList<Integer> xList;
ArrayList<Integer> yList;
ArrayList<Integer> colorList;
color mainColor = color(random(40, 255), random(40, 255), random(40, 255));



void setup()
{
  surface.setResizable(true);
  size(800, 600);
  x = width/2;
  y = height/2;
  speed = 5;
  pMass = 2;
  massRegrowChance = 500;
  Righteous = createFont("Righteous.otf", 32);
  textFont(Righteous);

  mainLoop = new SoundFile(this, "Fluid Dynamics.mp3");
  xList = new ArrayList<Integer>();
  yList = new ArrayList<Integer>();
  colorList = new ArrayList<Integer>();

  for (int i=0; i < 200; i++)
  {
    xList.add(int(random(0, width)));
    yList.add(int(random(0, height)));
    colorList.add(color(random(40, 255), random(40, 255), random(40, 255)));
  }
  mainLoop.loop();
  loadingScreen();
  frameRate(60);
}
void draw()
{
  environment();
  massMovement();
  debug();
}
void massMovement()
{
  xPos = mouseX;
  yPos = mouseY;
  xPos =  map(xPos, 0, width, -speed, speed);
  yPos =  map(yPos, 0, height, -speed, speed);
  for (int i=0; i < 50; i++)
  {
    noStroke();
    x = xList.set(i, int(xPos) + xList.get(i));
    y = yList.set(i, int(yPos) + yList.get(i));
    fill(colorList.get(i));
    if (xList.get(i) > width + 5 || xList.get(i) < -5 || yList.get(i) > height + 5|| yList.get(i) < -5)
    {
      massBool = int(random(-massRegrowChance, massRegrowChance));
      if (massBool == int(random(-massRegrowChance, massRegrowChance)))
      {
        xList.set(i, int(random(0, width)));
        yList.set(i, int(random(0, height)));
      }
    }
    massGrow();
    ellipse(x, y, 5, 5);
  }
  fill(mainColor);
  ellipse(width/2, height/2, 50, 50);
  fill(textColor[textChoice]);
  text("Agar.io+", (width/2) - 100, 80);
}
void environment()
{
  if (key == '1')
  {
    lineChoice = 0;
    bgChoice = 0;
    k = 2;
    textChoice = 0;
  } else if (key == '2')
  {
    lineChoice = 1;
    bgChoice = 1;
    k = 1;
    textChoice = 1;
  }
  background(bg[bgChoice]);

  for (int i=0; i < width; i++)
  {
    strokeWeight(3);
    stroke(gridLine[lineChoice]);
    line(25*i, 0, 25*i, height);
    line(0, 25*i, width, 25*i);
  }
}
void transition()
{
  for (int i=0; i < width; i++)
  {
    transitionColor = color(random(40, 255), random(40, 255), random(40, 255));
    fill(transitionColor);
    ellipse(400, 300, i, i);
  }
}
void massGrow()
{
  for (int i=0; i < 200; i++)
  {
    if (dist(width/2, height/2, (pMass/2), width/2) <= (dist(width/2, height/2, xList.get(i), yList.get(i))))
    {
      xList.set(i, int(random(0, width)));
      yList.set(i, int(random(0, height)));
      pMass++;
    }
  }
}
void debug()
{
  stroke(252, 0, 0);
  line(width/2, height/2, (width/2) + (pMass/2), height/2);
  fill(textColor[textChoice]);
  text(pMass/2, 700, 50);
  text(int(dist(400, 300, (width/2 + pMass/2), pMass/2)), 0, 550);
  text(int(dist(width/2, height/2, xList.get(4), yList.get(4))), 0, 600);
  noFill();
  ellipse(xList.get(4), yList.get(4), 10, 10);
}
void titleScreen()
{
  for (int i=0; i < 300; i++)
  {
    ellipse(width/2, height/2, i, i);
  }
  text("Agar.io+", 300, 380);
}


void multiplayer()
{
}


void loadingScreen()
{
  float easing = 0.05;
  float circleGrow = 5.0;
  for (int n=1; n < 500; n++)
  {
    ellipse(x, y, circleGrow, circleGrow);
  }
}