【引擎触发】magicstruck：被魔法击中的减伤钩子

---magicstruck: 人物被魔法攻击触发
function magicstruck(actor, attacker, damage)
    local player = class(actor)
    if not player then return end
    -- 魔法躲避：装备与技能的叠加躲避率
    local dodge = tonumber(getplayvar(actor, 2, "MagicDodge")) or 0
    if math.random(1, 100) <= dodge then
        sendmsg(actor, 1, "魔法躲避成功！")
        return
    end
    -- 抗性减免：冰抗对冰咆哮的克制
    local resist = tonumber(getplayvar(actor, 2, "IceResist")) or 0
    if resist > 0 then
        local cut = math.floor(damage * resist / 100)
        sendmsg(actor, 1, "冰抗减免 " .. cut .. " 点伤害")
    end
end

---魔法盾的伤害吸收
function Shield.absorb(actor, damage)
    local shield = tonumber(getplayvar(actor, 2, "ShieldHp")) or 0
    if shield <= 0 then return damage end
    local absorbed = math.min(shield, math.floor(damage * 0.6))
    -- 护盾最多吸收 60% 的伤害
    setplayvar(actor, "HUMAN", "ShieldHp", shield - absorbed, 1)
    if shield - absorbed <= 0 then
        sendmsg(actor, 1, "魔法盾已破碎！")
        playsound(actor, 1045)
    end
    return damage - absorbed
end