My Sketch

var ball1x = 0;

var ball1y = 0;

var ball1z = 0;

  var zin = true;

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var shotx = 0;

var shoty = 0;

var shotz = 0;

var shooting = false;

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function setup() {

  createCanvas(windowWidth, windowHeight,WEBGL);

  background(100);

}

function draw() { 

  distToBall1 = floor(dist(mouseX,mouseY,ball1x+width/2,ball1y+height/2));  //  2D distance check 

  distToBall3D = floor(dist(shotx,shoty,shotz,ball1x,ball1y,ball1z));   //  3D distance check

  print(distToBall1);

  print(distToBall3D);

  push();

  // this is the shot that links to the mouse  \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

  shotx = mouseX-width/2;

  shoty = mouseY-height/2;

  translate(shotx,shoty,shotz);  

  push();

  translate(0,0,-1000)

  rotateX(radians(90));

  cylinder(2,2000);

  pop();

  sphere(25);  /////////////////////////// THIS IS THE BALL YOU ARE SHOOTING

  pop();

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  if(distToBall3D < 50){            // this is checking the distance to the ball (x and y and z)

   ball1x = floor(random(-width/2,width/2));

   ball1y = floor(random(-height/2,height/2)); 

  }

  // This is the ball that we are trying to catch

  push();

  translate(ball1x,ball1y,ball1z);

  sphere(25);

  pop();

  //print("X: " + ball1x + " Y: " + ball1y + " Z: " + ball1z); 

  if (zin){

    ball1z += 8;

    if (ball1z >= 600){

      zin = false;

    }

  } 

  if (!zin) {

    //print(zin);

    ball1z -= 8;

    if(ball1z < -1000){

      zin = true;

    }

  }

    if (shooting) {

    print(shooting);

    shotz -= 100;

    if(shotz < -5000){

       shooting = false;

       shotz = 0;

    }

  } 

} // end of draw

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function mouseClicked() {

  shooting = true;

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}

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