1. int speed = 8;
   int x = 100;  // x location of fly
2. int y = 100;  // y location of fly
3. int state = 0; 
4. void setup() {
     size (800,700);
     PFont myfont;
   myfont = createFont("Ariel",18);
   }
5. void draw () {
   cursor(CROSS);
   strokeWeight(1);
     background(161,140,198);
   // Display the square
     stroke(0);
     fill(100);
     fill (209,120,25);
     rect(0,350,800,700);
     fill(175);
     //spider head
     fill (0,mouseY,mouseX);
     ellipse (530,470,70,50);
     fill (255);
     ellipse (510,470,10,20);
     fill(0);
     ellipse (510,470,5,6);
     //spider body
     fill(mouseX,mouseY,0);
     ellipse (600,500,120,100);
     //spider legs
     strokeWeight (6);
     line (550,530,450,500);
     line (570,544,470,550);
     line (590,550, 540,590);
     line(450,500,380,560);
     line(470,550,400,620);
     line (540,590,500,650);
     //right hand side legs
     line(600,450, 650,400);
     line (630,454, 680,420);
     line (653,470, 700,440);
     line(650,400,730,380);
     line(680,420,770,440);
     line(700,440,800,490);
     strokeWeight (1);
   //fly
      strokeWeight (0);
      fill (255);
    ellipse(x,y-10,40,20);
    fill(170);
    ellipse(x,y,40,20);
    fill(0);
    ellipse(x+10,y,20,10);
    //cross hairs
    
    line (mouseX-30,mouseY,mouseX-10,mouseY);
     line (mouseX+30,mouseY,mouseX+10,mouseY);
      line (mouseX,mouseY+30,mouseX,mouseY+10);
       line (mouseX,mouseY-30,mouseX,mouseY-10);
      
6. //path of fly
7.   if (state == 0) {
       x = x + speed;
8. 
       if (x > width-100) {
         x = width-100;
         state = 1;
       }
     } else if (state == 1) {
       y = y + speed;
       if (y > height-100) {
         y = height-100;
         state = 2;
       }
     } else if (state == 2) {
       x = x - speed;
       if (x < 150) {
         x = 150;
         state = 3;
       }
     } else if (state == 3) {
       y = y - speed;
       if (y<200) {
         y = 200;
         state= 4;
       }
     } else if (state == 4) {
       x = x + speed;
       if (x>600) {
         x = 600;
         state=5;
       }
     }
     else if (state == 5) {
       y = y + speed;
       if (y > 400) {
         y = 400;
         state=6;
       }
     }
     else if (state == 6) {
       x = x - speed;
       if (x < 500) {
         x = 500;
         state=7;
       }
     }
     else if (state ==7) {
       y = y - speed;
       if (y < 100) {
         y = 100;
         state=0;
       }
     }
    
          if (state == 0) {
       x = x + speed;
9.     if (x > width-100) {
         x = width-100;
         state = 1;
       }
      }strokeWeight(2);
     if (mousePressed == true) {
    line(495,470,mouseX,mouseY);
    }
   }

it may be a bit noobish,i know, but im following some processing tutorials at the moment and want to learn how to use it properly-

its a basic game - if  u click-the spider shoots a web

my problem is....if i click on the fly...and only the fly< as if the spider was catching it>

how would i get a text to count it as a score....1...2..3..4 etc only when the fly is clicked.

not looking for any answers or anything, just want to learn how to do this
 ...so any one who can point me in the right direction it would be appreciated