Hey guys,
Its a bacteria game so it should eat the smallest ones first and grow bigger so he can eat the bigger ones untill the end of the game. i manages to make it so it moves with the mouse but its not eating them anymore!!
Could you please help??!!

 

Here is the game;

float x;
float y;
float easing = 0.02;
int r = 8;
int gameCase = 1;
int num = 10;
Alien myAlien;
float[] bugx = new float [num];
float[] bugy = new float [num];
int[] bugr = new int [num];
float[] speedx = new float [num];
float[] speedy = new float [num];
float a = 0.05;
//int Alienx = 150;
//int Alieny = 50;
int Aliensize = 20;

void setup() {
  size (800, 600);
  smooth();
  ellipseMode (CENTER);
  myAlien = new Alien( Aliensize, Aliensize);
  for (int i=0; i<num; i++) {
    bugx[i] = random (0, width);
    bugy[i] = random (0, height);
    bugr[i] = int (random (0, 30));
  }
  x = random (0, width);
  y = random (0, height);
}
 
void draw() {
  background (150, 60, 60);
  noStroke();
  fill (0);
  for (int i=0; i<num; i++) {
    ellipse (bugx[i], bugy[i], bugr[i]*2, bugr[i]*2);
  }
 
  myAlien.display();
  for (int i=0; i<num; i++) {
    float z=(bugx[i]-x)*(bugx[i]-x)+(bugy[i]-y)*(bugy[i]-y)-(bugr[i]+r)*(bugr[i]+r);
    if (z<0 && bugr[i]>r) {
      gameCase = 0;
    }
  }
  if (gameCase == 0) {
    gameover();
  } else {
    float targetX = mouseX;
    float targetY = mouseY;
   // Alienx += (targetX - Alienx) * easing;
   // Alieny += (targetY - Alieny) * easing;
      for (int i=0; i<num; i++) {
      move (i);
    }
  }
  for (int i=0; i<num; i++) {
    if ((bugx[i]-x)*(bugx[i]-x)+(bugy[i]-y)*(bugy[i]-y)-(bugr[i]+r)*(bugr[i]+r)<0 && bugr[i]<r) {
      r = int (sqrt (r*r + bugr[i]*bugr[i]));
      bugr[i] = 0;
    }
  }
  int sum = 100;
  for (int i=0; i<num; i++) {
    sum += bugr[i];
  }
  if (sum == 100) {
    win();
  }
}
void move(int i) {
    speedx[i] += random (-a, a);
    speedy[i] += random (-a, a);
    bugx[i] += speedx[i];
    bugy[i] += speedy[i];
    if (bugx[i]<-10) {
      bugx[i] += width;
    }
    if (bugx[i] > width+10) {
      bugx[i] -= width;
    }
    if (bugy[i] < -10) {
      bugy[i] += height;
    }
    if (bugy[i] > height+10) {
      bugy[i] -= height;
    }
  }
void gameover() {
  fill (240, 40, 40);
  textSize (65);
  textAlign(CENTER);
  text ("Game Over", width/2, height/2);
}
void win() {
  fill (255);
  textSize (65);
  textAlign(CENTER);
  text ("Congratulations!", width/2, height/2);
  textSize (30);
  text ("Bacterial Cleared!", width/2, height/2+50);
}

_________________________________________________________
Here is the Alien Class

class Alien {
 
  int bodyXloc;
  int bodyYloc;
  int bodyWidth;
  int bodyHeight;

int head1Width;
int head1Height;
int head1Xloc;
int head1Yloc;

int head2Width;
int head2Height;
int head2Xloc;
int head2Yloc;

int head3Width;
int head3Height;
int head3Xloc;
int head3Yloc;

int eye1Width;
int eye1Height;
int eye1Xloc;
int eye1Yloc;

int eye2Width;
int eye2Height;
int eye2Xloc;
int eye2Yloc;

int pupil1Width;
int pupil1Height;
int pupil1Xloc;
int pupil1Yloc;

int pupil2Width;
int pupil2Height;
int pupil2Xloc;
int pupil2Yloc;

int mouthX1loc;
int  mouthY1loc;
int  mouthX2loc ;
int  mouthY2loc ;
int  mouthX3loc ;
int  mouthY3loc ;
 
 
Alien(  int tmpbodyWidth, int tmpbodyHeight){
 

  bodyXloc = mouseX;
  bodyYloc = mouseY;
  bodyWidth = tmpbodyWidth;
  bodyHeight = tmpbodyHeight;

} // end constructor 
 
 
  void display() {
      bodyXloc = mouseX;
    bodyYloc = mouseY;
   
    // draw head1
    fill(165,45,210);
   
  head1Width = bodyWidth /2;
  head1Height = bodyWidth /2;
  head1Xloc = bodyXloc - bodyWidth;
  head1Yloc = bodyYloc - (bodyHeight / 2);

  ellipse(head1Xloc,head1Yloc,head1Width,head1Height);
 
fill(255,0,134);
  //Mouth
  mouthX1loc = head1Xloc ;
  mouthY1loc = head1Yloc ;
  mouthX2loc = head1Xloc - (head1Width / 2) ;
  mouthY2loc = head1Yloc ;
  mouthX3loc = head1Xloc ;
  mouthY3loc = head1Yloc +(head1Height / 2);
 
 
  triangle(mouthX1loc,mouthY1loc,mouthX2loc,mouthY2loc,mouthX3loc,mouthY3loc);
 
    //right eye
  fill(12,203,243);
  eye2Width =  head1Width / 4 ;
  eye2Height = bodyWidth / 4;
  eye2Xloc = head1Xloc +(head1Width / 4);
  eye2Yloc = head1Yloc - (head1Height/2);

    //Left Eye
  eye1Width = head1Width / 4 ;
  eye1Height = bodyWidth / 4;
  eye1Xloc = head1Xloc - (head1Width / 4);
  eye1Yloc = head1Yloc - (head1Height/2);

   ellipse (eye1Xloc,eye1Yloc,eye1Width,eye1Height);

  ellipse (eye2Xloc,eye2Yloc,eye2Width,eye2Height);
   fill(0);

   //left pupil
   pupil1Width = bodyWidth / 11 ;
   pupil1Height = bodyWidth / 11 ;
   pupil1Xloc = eye1Xloc ;
   pupil1Yloc = eye1Yloc + (eye1Height/4);

   ellipse(pupil1Xloc,pupil1Yloc,pupil1Width,pupil1Height);

     //right pupil
   pupil2Width = bodyWidth / 11 ;
   pupil2Height = bodyWidth / 11 ;
   pupil2Xloc = eye2Xloc ;
   pupil2Yloc = eye2Yloc + (eye2Height/4);

   ellipse(pupil2Xloc,pupil2Yloc,pupil2Width,pupil2Height);
fill(165,45,210); 
  // draw head2
  head2Width = head1Width  ;
  head2Height = head1Height ;
  head2Xloc =  head1Xloc + (head1Width / 2);
  head2Yloc = head1Yloc + (head1Height / 2);

ellipse(head2Xloc,head2Yloc,head2Width,head2Height);

//head 3
  head3Width = head2Width;
  head3Height = head2Height;
  head3Xloc =  head2Xloc + (head2Width / 2);
  head3Yloc = head2Yloc + (head2Width / 2) ;
ellipse(head3Xloc, head3Yloc, head3Width, head3Height);

 

fill(165,45,210); 
//body
ellipse(bodyXloc,bodyYloc,bodyWidth,bodyHeight);

  }}

 

 

THANKS!!!!!!!!!