Fireattack1 (Wave Script)

frame = 0
bullets = {}

function CreateBullet(x, y)
  local bullet = CreateProjectile("Tomas/Fireball 1", x, y)
  table.insert(bullets, bullet)
end

function Update()
if frame % 30 == 0 then
    for i = 0, 4, 1
    do
      local xPos = -Arena.width / 2 + i * Arena.width / 4
      local yPos = -Arena.height / 2 - 50
      CreateBullet(xPos, yPos)
elseif frame % 60 == 0 then
    for i = 0, 4, 1
    do
      local xPos = -Arena.width / 2 + 1 * Arena.width / 4 + 20
      local yPos = -Arena.height / 2 - 50
      CreateBullet(xPos, yPos)
    end
  end
  for i = #bullets, 1, -1
  do
     currentBullet = bullets[i]

     currentBullet.Move(0, 2)

     if currentBullet.y > 170 then
       currentBullet.Remove()
       table.remove(bullets, i)
    end
  end
       frame = frame + 1
end