【策划架构】Lua __call可调用对象：烈火剑法技能表一等封装

local function castFire(actor, skill)
    -- 冷却判断散落在每个调用点，改冷却要改12处
    if os.time() - skill.last < skill.cd then return end
    skill.last = os.time()
    sendmsg(actor, 1, skill.name .. " 出手")
end

local skill = {name = "烈火剑法", cd = 30, last = 0}
setmetatable(skill, {__call = function(self, actor)
    if os.time() - self.last < self.cd then
        sendmsg(actor, 1, "烈火剑法冷却中")
        return
    end
    self.last = os.time()
    sendmsg(actor, 1, self.name .. " 烈焰斩出")
end})
skill(actor)          -- 表当函数调，调用点收拢到一行