落红雨：花瓣下多密血回多快

fx-rainfall

local RedRain = {}
local CONST = {
    DURATION   = 2.8,     -- 花雨时长
    HEAL_RATE  = 9,       -- 每秒回血
    PETAL_RATE = 14,      -- 每秒花瓣数
    DECAY      = 1.2,     -- 平时每秒自然消耗
}

function RedRain.Cast(myID)
    RedRain._left = CONST.DURATION
    RedRain._petalAcc = 0
    RedRain._healAcc = 0
    RedRain:HookScheduler()
    SL:ShowSystemTips("落红雨")
end

function RedRain:HookScheduler()
    if self._sched then return end
    self._sched = SL:Schedule(function(dt)
        self:Update(dt)
    end, 0.02)
end

function RedRain:Update(dt)
    if self._left > 0 then
        self._left = self._left - dt
        -- 花瓣生成: 速率 × dt, 与帧率无关
        self._petalAcc = self._petalAcc + dt * CONST.PETAL_RATE
        while self._petalAcc >= 1 do
            self._petalAcc = self._petalAcc - 1
            SpawnPetal()
        end
        -- 回血: 同样按秒速率
        self._healAcc = self._healAcc + dt * CONST.HEAL_RATE
        while self._healAcc >= 1 do
            self._healAcc = self._healAcc - 1
            local hp = SL:GetValue("ACTOR_HP", SL:GetValue("USER_ID"))
            SL:SendLuaNetMsg(0, 0, 0, 0, SL:JsonEncode({ heal = 1 }))
        end
    else
        -- 平时: 自然消耗
        self._decayAcc = (self._decayAcc or 0) + dt * CONST.DECAY
        while self._decayAcc >= 1 do
            self._decayAcc = self._decayAcc - 1
            -- 扣血结算
        end
    end
end

return RedRain