引雷桩：插根铁桩，借天雷轰它

bolt.x = rod.x

 fx-rod

local LightningRod = {}
local ROD_HP, ZONE = 2, 62

local rod = nil

function LightningRod.Plant(x)
    if rod then return end
    rod = { x = x, hp = ROD_HP }
    SL:SpawnUnit("rod", x)
    SL:MarkZone(x, ZONE)
    SL:PlayBurst(x, "plant_dust", 10)
end

function LightningRod.Call()
    if not rod then return end
    SL:SkyBolt(rod.x, function()
        SL:RingWave(rod.x, 62, "blue_ring")
        SL:FlashScreen("#a5d6ff", 0.14)
        SL:ShakeCamera(7, 0.3)
        for _, m in ipairs(SL:GetMonstersNear(rod.x, ZONE)) do
            SL:Damage(m, 30)
            SL:Stun(m, 0.5)
            SL:PopNumber(m, 30, "blue_big")
        end
        rod.hp = rod.hp - 1
        if rod.hp <= 0 then
            SL:KillUnit(rod)
            rod = nil
            SL:ShowTipAbove(rod, "桩化!")
        end
    end)
end

SL:RegClick("plant", function() LightningRod.Plant(SL:GetValue("x", "monster")) end)
SL:RegClick("call", LightningRod.Call)

return LightningRod