IdleScript

usedWeaponSlots = {}
usedWeaponSlots[0] = false
usedWeaponSlots[1] = true
usedWeaponSlots[2] = true
usedWeaponSlots[3] = true
usedWeaponSlots[4] = true
usedWeaponSlots[5] = true


cos3 = math.cos(1/60*math.pi)
sin3 = math.sin(1/60*math.pi)
timeIdling = 0
TURRET = 4
CANNON = 0
THRESHOLD = .1

function Update(I)
  if I:GetNumberOfMainframes() > 0 and I:GetNumberOfTargets(0) > 0 then
    timeIdling = 0
    return
  end
  if timeIdling < 20 then
    timeIdling = timeIdling + 1
    return
  end
  local right = I:GetConstructRightVector()
  local up = I:GetConstructUpVector()
  local forward = I:GetConstructForwardVector()
  local totalWeaponCount = I:GetWeaponCount()
  local turretCount = 0
  local turretTable = {}
  local info
  for weaponIndex = 0, totalWeaponCount - 1 do
    info = I:GetWeaponInfo(weaponIndex)
    if info.Valid and info.WeaponType == TURRET then
      turretCount = turretCount + 1
      turretTable[turretCount] = info.GlobalPosition
    end
  end

  local vUF = up*sin3 + forward*cos3
  local vUB = up*sin3 + -forward*cos3
  local vDF = -up*sin3 + forward*cos3
  local vDB = -up*sin3 + -forward*cos3
  local turretSpinnerCount = I:GetTurretSpinnerCount()
  local weaponCount, weaponInfo, rightness, forwardness, orientedForward, orientedUp, turretPosition
  for turretSpinnerIndex = 0, turretSpinnerCount - 1 do
    weaponCount = I:GetWeaponCountOnTurretOrSpinner(turretSpinnerIndex)
    for weaponIndex = 0, weaponCount - 1 do
      repeat
      weaponInfo = I:GetWeaponInfoOnTurretOrSpinner(turretSpinnerIndex, weaponIndex)
      if not weaponInfo.Valid or weaponInfo.WeaponType ~= CANNON or not usedWeaponSlots[weaponInfo.WeaponSlot] then
        break
      end
      rightness = Vector3.Dot(weaponInfo.CurrentDirection, right)
      if math.abs(rightness) > THRESHOLD then break end
      forwardness = Vector3.Dot(weaponInfo.CurrentDirection, forward)
      if forwardness > 0 then
        orientedForward = true
      else
        orientedForward= false
      end
      turretPosition = getTurretPosition(weaponInfo.LocalPosition, weaponInfo.GlobalPosition, turretTable, turretCount)
      if turretPosition == nil then break end
      if Vector3.Dot(weaponInfo.GlobalPosition - turretPosition, up) * weaponInfo.LocalPosition.y > 0 then
        orientedUp = true
      else
        orientedUp = false
      end
      if orientedForward and orientedUp then
        I:AimWeaponInDirectionOnTurretOrSpinner(turretSpinnerIndex, weaponIndex, vUF.x, vUF.y, vUF.z, 0)
        break
      end
      if orientedForward and not orientedUp then
        I:AimWeaponInDirectionOnTurretOrSpinner(turretSpinnerIndex, weaponIndex, vDF.x, vDF.y, vDF.z, 0)
        break
      end
      if not orientedForward and orientedUp then
        I:AimWeaponInDirectionOnTurretOrSpinner(turretSpinnerIndex, weaponIndex, vUB.x, vUB.y, vUB.z, 0)
        break
      end
      if not orientedForward and not orientedUp then
        I:AimWeaponInDirectionOnTurretOrSpinner(turretSpinnerIndex, weaponIndex, vDB.x, vDB.y, vDB.z, 0)
        break
      end
      break
      until true
    end
  end
end

function getTurretPosition(localWeaponPosition, globalWeaponPosition, turretTable, turretCount)
  local localSquareDistance = localWeaponPosition.sqrMagnitude
  local bestError = math.huge
  local squareDistance, bestPosition
  for i = 1, turretCount do
    squareDistance = (globalWeaponPosition - turretTable[i]).sqrMagnitude
    error = math.abs(squareDistance - localSquareDistance)
    if error < bestError then
      bestError = error
      bestPosition = turretTable[i]
    end
  end
  return bestPosition
end