local turret_types = {
    ['ammo-turret'] = true,
    ['artillery-turret'] = true,
    ['electric-turret'] = true,
    ['fluid-turret'] = true
}

local function destroy_turret(entity)
    if not entity.valid then
        return
    end
    if not turret_types[entity.type] then
        return
    end
    entity.die()
end

local function on_built_entity(event)
    destroy_turret(event.created_entity)
end

local function on_robot_built_entity(event)
    destroy_turret(event.created_entity)
end

local event = require 'utils.event'
event.add(defines.events.on_built_entity, on_built_entity)
event.add(defines.events.on_robot_built_entity, on_robot_built_entity)