格挡反击：弹开那一刀再还一手

fx-riposte

local Riposte = {}
local CONST = { MSG_ID = 12200, KEY = "Riposte", PERFECT = 0.2, SWING_PRE = 0.42 }

function Riposte.OnMobSwingStart()
    Riposte._swingStart = SL:GetValue("SERVER_TIME")
    Riposte._swingEnd = Riposte._swingStart + CONST.SWING_PRE
    Riposte._landTime = Riposte._swingEnd              -- 刀落时刻: 玩家的瞄准点
end

function Riposte.OnBlockPressed(myID)
    local now = SL:GetValue("SERVER_TIME")
    local diff = Riposte._landTime - now               -- 距刀落的时间差
    if diff < -0.1 then
        Riposte:TooLate()                              -- 刀都落完了才按
    elseif math.abs(diff) <= CONST.PERFECT / 2 then
        Riposte:PerfectParry()                         -- 完美窗口: 弹反
    else
        Riposte:NormalBlock()                          -- 宽容段: 普通格挡
    end
end

function Riposte:PerfectParry()
    SpawnParrySparks(330, GROUND - 70, 10)
    SL:ShowSystemTips("弹反!")
    SL:SendLuaNetMsg(CONST.MSG_ID, 0, 0, 0,
        SL:JsonEncode({ key = CONST.KEY, op = 2, result = "parry" }))
    -- 弹反奖励: 怪踉跄 + 自动还一手
    PerformWithDelayGlobal(function()
        SL:SendLuaNetMsg(CONST.MSG_ID, 0, 0, 0,
            SL:JsonEncode({ key = CONST.KEY, op = 3, counter = 1 }))
    end, 180)
end

return Riposte