护身灵符：符在盾在符碎盾破

fx-talisman

function talismanShield:On(caster, total)
    self._remain = total
    self._total = total
    self._count = 3                                  -- 符数 = 刻度
    self._orbits = {}
    for i = 0, self._count - 1 do
        self._orbits[i] = CreateTalismanOrbit(caster, i / self._count, 2.1)
    end
end

function talismanShield:Absorb(dmg, caster)
    local absorbed = math.min(self._remain, dmg)
    self._remain = self._remain - absorbed
    caster:PopupGuard(absorbed)                      -- "挡 xx" 蓝字

    -- 炸一张符: 刻度减少的具象
    local idx = #self._orbits
    if idx > 0 then
        local tf = table.remove(self._orbits, idx)
        tf:Shatter()                                 -- 碎片迸溅
    end

    if self._remain <= 0 then
        caster:BreakShield()                         -- 破盾穿透
        caster:PopupBreak()
        self:Off()
    end
    return dmg - absorbed                            -- 剩余伤害落血
end