Controls.pde

void keyPressed() { //Controls
//println(keyCode);
    if (key == CODED) {
      
    if (keyCode == UP) {
      direction = "up";
      accelerate = true;
      
    } if (keyCode == DOWN) {
      direction = "down";
      accelerate = true;
      
    } if (keyCode == RIGHT) {
      direction = "right";
      accelerate = true;
      
    } if (keyCode == LEFT) {
      direction = "left";
      accelerate = true;
    }
    
    }
}

void keyReleased() {
  if (playerSpeed <= 0.1){
  direction = "none";
  }
  accelerate = false;
}

Programar_io.pde

// Prog.io - Agar.io based game made in Processing by Jonas Silva 2015
// A Week Project


void setup(){
  background(250,250,250); //Setting white bg
  frameRate(FPS); //Limiting FPS to 60
  size(windowX,windowY); //Dynamic Window Size
  smooth(); // I have no idea what this does
  a=random(10,250); //Random colors
  b=random(10,250);
  c=random(10,250);
  r=random(10,250); //Random colors
  g=random(10,250);
  b2=random(10,250);
  playerPosX = startPosX; //Sets Start Position (X)
  playerPosY = startPosY; //Sets Start Position (Y)
  
   for (int i = 0; i < FoodCountMAX; i++){
     array[(int)random(30,windowX-30)][(int)random(30,windowY-30)] = 1;
   }
}



// Food Spawning

void drawFood(){
  for(int i = 0; i < array.length; i++){
    for(int j = 0; j < array[i].length; j++){
      if(array[i][j] == 1){
        fill(r,g,b);
        ellipse(i, j, 35, 35);  
      }
    }
  }
}


// Collision Detection

void FoodCollision(){
  for(int i = 0; i < array.length; i++){
    for(int j = 0; j < array[i].length; j++){
      if(array[i][j] == 1){
        if (playerPosX + offsetX + (playerSize / 2) > i && i > playerPosX + offsetX - (playerSize / 2)) {
          if (playerPosY + offsetY + (playerSize / 2) > j && j > playerPosY + offsetY - (playerSize / 2)){
          score++;
          array[i][j] = 0;
          acceleration -= 0.002;
          }
        }
      }
    }
  }
}


void FoodSpawn(){
  for (int i = 0; i < FoodCountMAX; i++){
    array[(int)random(30,windowX-30)][(int)random(30,windowY-30)] = 1;
  }
}

void draw(){
  background(250,250,250); //Clears Drawn Pixels and sets bg 
  playerSize = score + 50; //Sets player size by multiplying score by 50
  
  drawFood(); // Calls DrawFood Method
  FoodCollision(); // Calls the food collision method
  
  fill(0,0,0); //Sets Color Black for Text
  text("Score: "+score,20,30); //Score Text
  text("FPS: " + frameRate,windowX - 100, 30); //FPS Text
  text("Speed: " + playerSpeed,20, 45); //FPS Text
  
  // Acceleration
  if (playerSpeed < max_speed && accelerate == true){
    playerSpeed += acceleration;
  }
  
  // Deacceleration
  if (playerSpeed > 0 && accelerate == false){
    playerSpeed -= acceleration*4;
  }
  
  //Count Fps for spawning food every 15 seconds
  if (fps_count < spawn_cooldown * FPS){
    fps_count++;
    
  } else {
    fps_count = 0;
    FoodSpawn(); // Calls the food spawning method
   }
   
  drawFood();

  
  
  fill(a,b,c); //Sets Random color on the player
  if (direction == "up") {
    ellipse(playerPosX + offsetX, playerPosY + offsetY, playerSize, playerSize);
    offsetX = offsetX + 0;
    offsetY = offsetY - playerSpeed;
  }
  else if(direction == "down"){
    ellipse(playerPosX + offsetX, playerPosY + offsetY, playerSize, playerSize);
    offsetY = offsetY + playerSpeed;
    
  } else if(direction == "right"){
    ellipse(playerPosX + offsetX,playerPosY + offsetY, playerSize, playerSize);
    offsetX = offsetX + playerSpeed;
    
  } else if(direction == "left"){
    ellipse(playerPosX + offsetX, playerPosY + offsetY, playerSize, playerSize);
    offsetX = offsetX - playerSpeed;
    
    //Multiple Button Movement
    
  } else if(direction == "left" && direction == "down"){
    ellipse(playerPosX + offsetX, playerPosY + offsetY, playerSize, playerSize);
    offsetX = offsetX - playerSpeed;
  }
    // Idle
    
  else if (playerSpeed <= 0.1){
    ellipse(playerPosX + offsetX, playerPosY + offsetY, playerSize, playerSize);  
  }
  
   //println(playerPosX+offsetX); // Debug
 }

sketch.properties

mode.id=processing.mode.java.JavaMode
mode=Java

Variables.pde

float playerSize;
int FPS = 60;
int score = 1; //Default Starting Score
int windowX = 1280; //Dynamic Width Window Size
int windowY = 720; //Dynamic Height Window Size
float a; //Random Colors
float b;
float c;
float r;
float g;
float b2;
float playerPosX;
float playerPosY;
float startPosX = windowX/2; //Finds Start Position based on window size
float startPosY = windowY/2;
String direction; //Direction
float offsetX = 0; //Offset for player
float offsetY = 0;
float textOffsetPoint = 20;
float playerSpeed = 0;
float max_speed = 10;
boolean accelerate = false;
float acceleration = 0.01;
int FoodCountMAX = (int)random(1,10);
int FoodCount = 0;
float foodPosX;
float foodPosY;
int[][] array = new int[windowX][windowY];
int fps_count = 0;
int spawn_cooldown = 15;