--死亡
local DeadSystem = {}

local private = {}

--加载需要的模块
local EventSystem = require 'Event/EventSystem'

function DeadSystem.OnDead(entity, levelConditionIgnoreCount, deadParams, missileID)
    if not entity.isPickupItem then 
        entity.components.attr.hp:Reset()

        if entity.components.move.ShovePriority > 50 then
            LuaShoveManager.ReSetGridDataOfEntity(entity,true)
        end

        local masterEntity = entity:GetMasterEntity()
        if masterEntity then
            masterEntity.components.base:OnDominatedEntityDead(entity)
        end

        --投技（Grab）处理↓
        if entity.components.base.GrabbedEntity then
            SystemManager.StopGrab(entity, entity.components.base.GrabbedEntity)
        end

        if entity.components.base.Graber then
            SystemManager.StopGrab(entity.components.base.Graber, entity) --被抓取的单位死亡时，解除抓取
        end
        --↑↑↑↑↑↑↑
        entity.components.record:OnDead()
    end

    LevelManager.CurLevelFunc:OnEntityDead(entity, deadParams, missileID)
    EventSystem.Dispatch(entity.Event_EntityDead,entity, levelConditionIgnoreCount)
    if entity:IsPlayerSelf() then
        EventSystem.Dispatch(EventID.Player_Dead)
    end

    entity.ExpEntity:OnDead()

    BattleEventSystem.AfterEntityDead(entity) --这个要放BuffSystem.OnDead、AttrSystem.OnDead、DriveSystem.OnDead等的前面，因为后面这些会清除数据，所以要在清除数据前抛事件，否则会缺少信息量以至于无法发动一些效果
end

function DeadSystem.OnLogicUpdate(entity)
    if entity.isPickupItem then
        entity.pickUpItemLifeFrameLeft = entity.pickUpItemLifeFrameLeft - 1
        if entity.pickUpItemLifeFrameLeft <= 0 then
            SystemManager.DeadQuit(entity)
        end
        return --这里必须return 因为 pickupItem 没有 record Comp
    end

    local comp_Record = entity.components.record
    if not comp_Record.IsUnload then
        return
    end

    SystemManager.OnUnload(entity)
end


function DeadSystem.BindDead(fatherEntity,sonEntity)
    fatherEntity.components.dead:BindDead(sonEntity)
end

function DeadSystem.FollowDead(entity,deadFunc)    
    -- 尝试让我的子孙陪葬
    local dead = entity.components.dead
    if dead then
        local followList = dead:GetFollowDeadList()
        if followList then
            for i,sonEntity in ipairs(followList) do
                sonEntity._logicInitData.MasterEntity = nil
                deadFunc = deadFunc or SystemManager.OnDead
                deadFunc(sonEntity) -- 形成了递归
            end
            dead:ResetFollowDeadList()
        end        
    end
    
    --告诉自己父亲，不能陪葬了  gws：不会和上面形成了递归 ，因为上面已经设置myFather=nil 。这段代码只有在父亲没死子孙死的时候才发生
    local myFather = entity:GetDirectMasterEntity()
    if myFather then
        local fatherDead = myFather.components.dead
        fatherDead:UnBindDead(entity)        
    end 
end

function DeadSystem.FollowDeadQuit(entity)
    DeadSystem.FollowDead(entity,SystemManager.DeadQuit)
end

function DeadSystem.OnMove(entity)
    if entity.components.move.isInCliff then
        if entity:IsAlive() then
            DeadSystem.OnDead(entity)
        end
    end
end

return DeadSystem