--子弹发射子弹
local FireNextMissileSystem = {}
local Const_TrackerHeightOffset = 1.5

function FireNextMissileSystem.CallNextBullet(missile,nextInfo , callType)
    local callBulletData = nextInfo.NextID>0 and missile.Attacker:GetCallData(nextInfo.NextID) or nil
    if not callBulletData then
        return
    end
    
    local entity = missile.Attacker

    local callBulletInfo = RuntimeDataManager.New_CallBulletInfo()
    local oldDynamicDmgFactor = missile:GetDynamicDamageFactor()
    if oldDynamicDmgFactor then
        callBulletInfo.DynamicSkillDmgFactor:Reset(oldDynamicDmgFactor)
    end
    callBulletInfo.IsNextMissile = true
    callBulletInfo.Entity = entity
    callBulletInfo.CallTime:Reset(callBulletData.DelayTime)
    callBulletInfo.Data = callBulletData
    callBulletInfo.SkillID = missile:GetSkillID()

    if callBulletData.IsNotBaseOnSkill then
        logging.error(LTAG.ERROR, "子弹召唤的二次call ，IsNotBaseOnSkill 不能是1，必须是0 ；程序填1也按照0逻辑来！")
    end

    callBulletInfo.ForceFireDir = missile.MoveDir -- 基础朝向就是子弹的飞行方向（和子弹面向一致）
    callBulletInfo.FireBasePos = missile.Pos -- 基础发射位置以前一个子弹的当前位置为基准

    
    if missile.IsTracker then -- 追踪弹的二次子弹高度以表现为准
        LuaShoveManager.GetHeightByPos(missile.Pos,callBulletInfo.FireBasePosY)
        if  missile.TrackerTarget then
            local height = FP.newV1(missile.TrackerTarget.components.base.CurModelData.ModelScale):Mul(Const_TrackerHeightOffset)
            callBulletInfo.FireBasePosY:Add(height)                
        end
    else
        if missile.MissileData.MoveType == LuaConst.MissileMoveType.Parabola 
            and (callType == LuaConst.FireNextType.End or callType == LuaConst.FireNextType.WaitCancle or callType == LuaConst.FireNextType.CancelAndNoHit or callType == LuaConst.FireNextType.CancelAndHitted) then
             local hasTerrain = LuaShoveManager.GetHeightByPos(missile.Pos ,callBulletInfo.FireBasePosY)
            if not hasTerrain then -- 打到一个无行走的地方，不要发射二次子弹了
                callBulletInfo.FireBasePosY:Reset(entity:GetLogicPosY())
            end
        else
            callBulletInfo.FireBasePosY = missile.PosY:cloneV1()
        end
    end

    SystemManager.AddNewCall(callBulletInfo)    
end


--- 发射弹射子弹
--- 弹射子弹：callID继承之前的missile，改变d有： 衰减、记录的次数、攻击目标
local BOUNCE_TARGET_FIND_PARAM = {
    campType = LuaConst.ETargetCampType.ENEMY,
    ignoreCanNotBeTargetBuff = true,
    ignoreBeSkillTargetBuff = true,
    ignoreEnemyListValid = true,
    noInvincible = true, -- 不选无敌的
    conditionStr = "Not(CheckBuff(0,100044))", -- 不能被子弹打中的entity不要被选中 LuaConst.SpecialBuffs.CantBeTrigger
    exclusions = nil,    -- 排除列表
    regionParams = {
        shapeType = LuaConst.ERegionShapeType.CIRCLE,
        pos = FP.newV2(0,0), -- 位置
        shapeNumParams = {0}, -- 距离
    },
    sortParams = {
        sortType = LuaConst.ETargetSortType.DIST_NEAR
    },
}
-- hitEntity 从谁的坐标寻找目标并发射，且下次不再攻击这个目标
function FireNextMissileSystem.CallNextBounceBullet(attacker, missile, bounceInfo, hitEntity, callId)
    if hitEntity == nil then
        --logging.error(LTAG.ERROR, "[gws]: 发射弹射子弹时，发现弹射出发者entity是空的 , 弹射子弹不再发射！")
        return
    end
    if bounceInfo.leftCount <= 0 then -- 弹射次数用完了
        return
    end
    local entity = attacker or missile.Attacker
    
    local exclusions = {}
    for i,oldEntity in ipairs(bounceInfo.exclusions) do
        if oldEntity:IsValid() then
            table.insert(exclusions, oldEntity)
        end
    end
    table.insert(exclusions, hitEntity) -- 不再攻击上一个目标
    
    --寻敌（如以后需要寻找的是友方，则再添加个参数控制）
    BOUNCE_TARGET_FIND_PARAM.exclusions = exclusions--需要忽略的entity
    BOUNCE_TARGET_FIND_PARAM.regionParams.pos:Reset(hitEntity:GetLogicPos())
    BOUNCE_TARGET_FIND_PARAM.regionParams.shapeNumParams[1] = bounceInfo.searchRadius
    local targetEntity = TargetManager.GetTarget(entity, BOUNCE_TARGET_FIND_PARAM)
    if targetEntity == nil then -- 寻不到目标
        -- noTargetThenOpt ：1= 找不到目标则停止弹射 2-找不到目标从旧的目标中找 3-找不到目标从新的目标中找再找不到则选择此次的受击目标
        if bounceInfo.noTargetThenOpt == 1 then
            BOUNCE_TARGET_FIND_PARAM.exclusions = nil
            return
        elseif bounceInfo.noTargetThenOpt == 2 or bounceInfo.noTargetThenOpt == 3 then
            BOUNCE_TARGET_FIND_PARAM.exclusions = { hitEntity }
            targetEntity = TargetManager.GetTarget(entity, BOUNCE_TARGET_FIND_PARAM)
            if targetEntity == nil and bounceInfo.noTargetThenOpt == 3 then
                targetEntity = hitEntity
            end
            if targetEntity == nil or not targetEntity:IsAlive() then
                BOUNCE_TARGET_FIND_PARAM.exclusions = nil
                return -- 实在是找不到目标，不再发射
            end
        end
    end

    local callBulletData = callId and missile.Attacker:GetCallData(callId) or missile.CallData

    local callBulletInfo = RuntimeDataManager.New_CallBulletInfo()
    local oldDynamicDmgFactor = missile:GetDynamicDamageFactor()
    if oldDynamicDmgFactor then -- 若是持续递减的子弹，则伤害 = base * dynamicDmgRate^count
        callBulletInfo.DynamicSkillDmgFactor:Reset(oldDynamicDmgFactor)
        if bounceInfo.dynamicDmgRateIsOnce then
            if bounceInfo.isFirst then
                callBulletInfo.DynamicSkillDmgFactor:Mul(bounceInfo.dynamicDmgRate)
            end
        else
            callBulletInfo.DynamicSkillDmgFactor:Mul(bounceInfo.dynamicDmgRate)
        end
    end
    
    callBulletInfo.IsNextMissile = true
    callBulletInfo.Entity = entity
    callBulletInfo.CallTime:Reset(callBulletData.DelayTime)
    callBulletInfo.Data = callBulletData
    callBulletInfo.SkillID = missile:GetSkillID()
    callBulletInfo.FireBasePos = hitEntity:GetLogicPos():cloneV2()-- 基础发射位置以前一个子弹打中的人位置为基准
    
    callBulletInfo.FireBasePosY = hitEntity.components.move.LogicPosY:cloneV1()

    callBulletInfo.TrackerTarget = targetEntity
    callBulletInfo.ForceTarget = targetEntity -- 目的是覆盖entity.components.target.Target
    --设置子弹朝向
    callBulletInfo.ForceFireDir = FP.newV2(0,0)
    callBulletInfo.ForceFireDir:Reset(targetEntity:GetLogicPos()):Sub(hitEntity:GetLogicPos())   -- 基础朝向就是子弹的飞行方向（和子弹面向一致）
    callBulletInfo.ForceFireDir:Normalize()

    callBulletInfo.bounceInfo = {
        leftCount = bounceInfo.leftCount-1, 
        dynamicDmgRate = bounceInfo.dynamicDmgRate,
        dynamicDmgRateIsOnce = bounceInfo.dynamicDmgRateIsOnce,
        isFirst = false,
        searchRadius = bounceInfo.searchRadius, 
        noTargetThenOpt = bounceInfo.noTargetThenOpt,
        exclusions = exclusions, 
    }
    
    --清理下缓存数据
    BOUNCE_TARGET_FIND_PARAM.exclusions = nil
    BOUNCE_TARGET_FIND_PARAM.regionParams.pos:Reset()
    BOUNCE_TARGET_FIND_PARAM.regionParams.shapeNumParams[1] = 0

    --print( hitEntity.EntityID ," ------------------  ", targetEntity.EntityID)
    SystemManager.AddNewCall(callBulletInfo)
end


return FireNextMissileSystem