匀气：刀刀要吃气，歇两口气才回满

 fx-breathmeter

-- @file BreathMeter.lua
-- 匀气 —— 刀刀要吃气，歇两口气才回满

local BreathMeter = {}

local CONST = {
    BREATH_MAX    = 5,
    REGEN_IDLE    = 2.0,
    REGEN_GAP     = 1.5,
    TIRED_DMG     = 4,
    BASE_DMG      = 10,

    COLOR_BREATH  = "#78b8a0",
    COLOR_DEEP    = "#1e4a3e",
    COLOR_GHOST   = "#c8ece0",

    ZORDER_BREATH = 133,
    ZORDER_FX     = 135,
    AUTOINC_BASE  = 1022000,
}

local _breath     = CONST.BREATH_MAX
local _idleT      = 0
local _regenT     = 0
local _scheduler  = nil
local _autoInc    = 0

local function GenID(prefix)
    _autoInc = _autoInc + 1
    return string.format("%s_%d", prefix or "BRT",
        CONST.AUTOINC_BASE + _autoInc)
end

local function GetActorPos(id)
    if not id then return nil end
    local x = SL:GetValue("ACTOR_POSITION_X", id)
    local y = SL:GetValue("ACTOR_POSITION_Y", id)
    if not x or not y then return nil end
    return { x = x, y = y }
end

local function ShowTip(msg)
    if msg and msg ~= "" then SL:ShowSystemTips(msg) end
end

local function SpendBreath()
    if _breath >= 1 then
        _breath = _breath - 1
        _idleT = 0
        return CONST.BASE_DMG
    end
    _idleT = 0
    return CONST.TIRED_DMG
end

function BreathMeter.Hold()
    if not _on then
        _on = true
        _holdT = 5.0
        SL:PlayHoldBreathFx(SL:GetValue("USER_ID"))
        SL:TipAboveMe("屏息")
        ShowTip("屏息五秒——气息不耗，刀刀足两")
    else
        _on = false
        ShowTip("屏息结束——正常呼吸")
    end
end

-- 出刀出口：扣气定刀
SL:RegisterLUAEvent(LUA_EVENT_MELEE_HIT, "BRT_Out", function(tid)
    local out = SpendBreath()
    if out < CONST.BASE_DMG then
        SL:TipAboveMe("气尽")
    end
    return out - (SL:GetValue("HIT_DAMAGE", tid) or CONST.BASE_DMG)
end)

-- 定时器：喘息回气与屏息倒计时
if not _scheduler then
    _scheduler = SL:Schedule(function(dt)
        if _on then
            _holdT = _holdT - dt
            if _holdT <= 0 then
                _on = false
                ShowTip("屏息结束——正常呼吸")
            end
            return
        end
        if _breath < CONST.BREATH_MAX then
            _idleT = _idleT + dt
            if _idleT >= CONST.REGEN_IDLE then
                _regenT = _regenT + dt
                if _regenT >= CONST.REGEN_GAP then
                    _regenT = 0
                    _breath = _breath + 1
                    SL:PlayRegenFx(SL:GetValue("USER_ID"))
                    if _breath >= CONST.BREATH_MAX then
                        ShowTip("气匀满了——下一刀足两")
                    end
                end
            end
        end
    end, 0.02)
end

SL:ScheduleOnce(function()
    SL:BindDebugButton("屏息", function()
        BreathMeter.Hold()
    end)
    ShowTip("技能已加载: 匀气 (调试按钮触发)")
end, 1.0)

function BreathMeter.Unload()
    if _scheduler then SL:Unschedule(_scheduler) end
    SL:UnregisterLUAEvent(LUA_EVENT_MELEE_HIT, "BRT_Out")
    _breath = CONST.BREATH_MAX
    _on = false
end

return BreathMeter