-- 这个脚本是记录主将出生点信息
local Base = require("Battle/Logic/Level/LevelItemFactory/LevelItem")
local LevelItem_RandomPool = class("LevelItem_RandomPool", Base)

-- 构造函数 ,使用的时候用new ,如果没有特殊的变量设置，不需要这个函数
function LevelItem_RandomPool:initialize(data)
    Base.initialize(self,data)
    self._curRandomList = {} -- 当前池子中的随机数据,随机数字都从这里取 { {id,Weight}, {id,Weight},{id,Weight},{id,Weight}, }
    self._curTotalWeight = FP.newV1(0) --随机的总权重
    for i, v in ipairs(data.WeightList) do
        self._curTotalWeight:Add(v.Weight)
        table.insert(self._curRandomList, v)
    end
end

--region --***************生命周期***************--

--region 生命周期

--region --***************事件相关***************--

function LevelItem_RandomPool:DoAction(actionType, ...)
    Base.DoAction(self, actionType, ...)
    if actionType == LuaConst.LevelActionType.RandomPool_Reset then
        self:ResetPool()
    end
end

-- 重置随机池子
function LevelItem_RandomPool:ResetPool()
    table.clear(self._curRandomList)
    self._curTotalWeight:Reset()  --随机的总权重
    for i, v in ipairs(self.ItemData.WeightList) do
        self._curTotalWeight:Add(v.Weight)
        table.insert(self._curRandomList, v)
    end
end
--endregion 事件相关

--返回一个随机值
function LevelItem_RandomPool:GetRandomValue()
    local result = nil
    local index = 0
    local weight = 0
    local random = LogicRandom.GetRangeValue(nil, FP.Const.Zero, self._curTotalWeight ,55)
    for i,v in ipairs(self._curRandomList) do
        random:Sub(v.Weight)
        if FP.LessEquals(random, 0) then
            result = v.Value
            index = i
            weight = v.Weight
            break;
        end
    end

    if self.ItemData.NeedTakeOut then
        self._curTotalWeight:Sub(weight)
        table.remove(self._curRandomList, index)
        if #self._curRandomList == 0 then -- 策划需求：默认的逻辑，当随机池空了后，需要重置
            self:ResetPool()
        end
    end
    
    return result
end

function LevelItem_RandomPool:GetFirstValue()
    local info = self._curRandomList[1]
    if info then
        return info.Value
    end
    return nil
end 

return LevelItem_RandomPool