figured it out, it was so simple I feel stupid.

 

PFont fontA;
float bombDiameter = 40;
boolean shoot = false;
PImage galaxy;
PImage bomb;
PImage explode;
int hit = 0;
int miss = 0;
int randx()
{
  return int(random(775));
}

int[] bombXCoords = {
  randx(), randx(), randx(), randx(), randx()
  }; // X cood. values for bomb array are random
int[] bombYCoords = {
  0, 0, 0, 0, 0
}; // All bombs have a 0 y value to start.

void setup()
{

  size(800, 700);
  galaxy = loadImage("galaxy.jpg");
}

void draw()
{
  background(galaxy);
  fill(color(0, 255, 0));
  stroke(color(0, 255, 0));
  ellipseMode(CENTER);
  ellipse(400, 700, 30, 30);
  fill(color(255, 0, 0));
  stroke(color(255, 0, 0));

  if (shoot==true)
  {
    Laser(mouseX);
    shoot = false;
  }
  textSize(30);
  fill(50,245,60);
text("Hit: " + hit, 650,650);
fill(220,0,50);
text("Miss: " + miss, 650,695);

  Bombs();
  gameOver();

}

void mousePressed() // value for mousepressed
{
  shoot = true;
}

void Bombs()
{ 
  stroke(255);
  strokeWeight(10);
  fill(255, 0, 0);
  bomb = loadImage("bomb.png");
  for (int i=0; i<5; i++)
  {
    image(bomb, bombXCoords[i], bombYCoords[i]++);
  }
}

void Laser(int shotX) // creates laser
{

  boolean strike = false;
  explode = loadImage("explode.png");
  for (int i = 0; i < 5; i++)
  {
    if ((shotX >= (((bombXCoords[i]+20)-bombDiameter/2)) && (shotX <= (bombXCoords[i]+20)+bombDiameter/2)))
    {
      strike = true;
      line(400, 670, mouseX, bombYCoords[i]);
      image(explode, bombXCoords[i], bombYCoords[i],
      bombDiameter+75, bombDiameter+75);
      bombXCoords[i] = randx(); // Moves hit bomb to random x-coordinate
      bombYCoords[i] = 0; // Restet hit bomb to 0
      hit +=1;
    }
  }

  if (strike == false)
  {
    line(400, 670, mouseX, 0);
    miss +=1;
  }
}

void gameOver()
{
  for (int i=0; i< 5; i++)
  {
    if ((bombYCoords[i]==800) || (miss >= 5))
    {
      fill(color(255, 0, 0));
      noLoop();
      textSize(100);
      text("GAME OVER", 100, 350);
    }
    if (hit == 30)
    {
      fill(color(255, 0, 0));
      noLoop();
      textSize(100);
      text("YOU WIN", 175, 350);
    }
  }
}