节气轮纹：一圈四个节气，打架看火色

 fx-seasoncycle

-- @file SeasonCycle.lua
-- 节气轮纹 —— 一圈四个节气，打架看火色

local SeasonCycle = {}

local CONST = {
    CREST_LIFE    = 16.0,
    CREST_CD      = 4.0,
    PHASE_LIFE    = 4.0,
    SPRING_HEAL   = 2,
    SUMMER_HIT    = 16,
    BASE_HIT      = 12,
    WINTER_TAKE   = 10,

    COLOR_SEASON  = "#78a078",
    COLOR_DEEP    = "#2e4828",
    COLOR_GHOST   = "#c8e8c8",

    ZORDER_SEASON = 140,
    ZORDER_FX     = 135,
    AUTOINC_BASE  = 1124000,
}

local _crestT    = 0
local _cdLeft    = 0
local _phase     = 1
local _phaseT    = 0
local _healTick  = 0
local _crestFx   = nil
local _scheduler = nil
local _autoInc   = 0

local function GenID(prefix)
    _autoInc = _autoInc + 1
    return string.format("%s_%d", prefix or "SSC",
        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 SafeRemove(node)
    if node and not GUI:Widget_IsNull(node) then
        GUI:removeFromParent(node)
    end
end

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

function SeasonCycle.Phase()
    return _phase
end

-- 相位结算：春养夏攻，秋账冬缓
SL:RegisterLUAEvent(LUA_EVENT_MELEE_DAMAGE, "SSC_Season", function()
    if _phase == 2 then
        return CONST.SUMMER_HIT - CONST.BASE_HIT
    end
    return 0
end)

function SeasonCycle.Cast()
    if _cdLeft > 0 or _crestT > 0 then return end
    local myID = SL:GetValue("USER_ID")
    _cdLeft = CONST.CREST_CD
    _crestT = CONST.CREST_LIFE
    _phase = 1
    _phaseT = CONST.PHASE_LIFE
    _healTick = 0
    SafeRemove(_crestFx)
    _crestFx = GUI:Layout_Create(GUI:Attach_SceneF(),
        GenID("Wheel"), 0, 0, 0, 0, false)
    GUI:setLocalZOrder(_crestFx, CONST.ZORDER_SEASON)
    SL:PlayWheelUpFx(myID)
    ShowTip("象转起来了——春养夏攻，秋账冬缓")
end

-- 定时器：轮转钟、春的回血与冬的缓敌
if not _scheduler then
    _scheduler = SL:Schedule(function(dt)
        _cdLeft = math.max(0, _cdLeft - dt)
        if _crestT > 0 then
            _crestT = _crestT - dt
            _phaseT = _phaseT - dt
            if _phaseT <= 0 then
                _phaseT = CONST.PHASE_LIFE
                _phase = (_phase % 4) + 1
                ShowTip("入" .. SeasonCycle.Name(_phase))
            end
            if _phase == 1 then
                _healTick = _healTick + dt
                if _healTick >= 1 then
                    _healTick = 0
                    local myID = SL:GetValue("USER_ID")
                    SL:HealActor(myID, CONST.SPRING_HEAL)
                end
            end
            if _crestT <= 0 then
                SafeRemove(_crestFx)
                ShowTip("象收了——打铁看火色的日子结束了")
            end
        end
    end, 0.02)
end

SL:ScheduleOnce(function()
    SL:BindDebugButton("观象", function()
        SeasonCycle.Cast()
    end)
    ShowTip("技能已加载: 节气纹 (调试按钮触发)")
end, 1.0)

function SeasonCycle.Name(p)
    local names = { "春", "夏", "秋", "冬" }
    return names[p]
end

function SeasonCycle.Unload()
    if _scheduler then SL:Unschedule(_scheduler) end
    SL:UnregisterLUAEvent(LUA_EVENT_MELEE_DAMAGE, "SSC_Season")
    SafeRemove(_crestFx)
    _crestT = 0
    _phase = 1
end

return SeasonCycle