破军旗：旗立三秒圈内加攻，旗倒攻散

 fx-warbanner

-- @file WarBanner.lua
-- 破军旗 —— 旗立三秒圈内加攻，旗倒攻散

local WarBanner = {}

local CONST = {
    BANNER_LIFE   = 3.0,
    BANNER_CD     = 8.0,
    BANNER_R      = 60,
    IN_AMP        = 1.3,

    COLOR_BANNER  = "#d8b34a",
    COLOR_DEEP    = "#6b5a2b",
    COLOR_GHOST   = "#f5ecc8",

    ZORDER_BANNER = 128,
    ZORDER_FX     = 135,
    AUTOINC_BASE  = 976000,
}

local _bannerT   = 0
local _bannerX   = 0
local _cdLeft    = 0
local _scheduler = nil
local _autoInc   = 0

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

local function CreateBannerNode(x)
    local node = GUI:Layout_Create(GUI:Attach_SceneF(),
        GenID("Bnr"), x, 0, 0, 0, false)
    GUI:setLocalZOrder(node, CONST.ZORDER_BANNER)
    GUI:DrawLine_Create(node, "pole", 0, 0, 6,
        -3, 0, -3, -70, CONST.COLOR_BANNER, 240)
    GUI:DrawLine_Create(node, "flag", 0, 0, 8,
        -3, -70, 22, -62, CONST.COLOR_GHOST, 240)
    return node
end

-- 立旗
function WarBanner.Cast()
    if _cdLeft > 0 or _bannerT > 0 then return end
    _cdLeft = CONST.BANNER_CD
    _bannerT = CONST.BANNER_LIFE
    local mp = GetActorPos(SL:GetValue("USER_ID"))
    local tp = GetActorPos(SL:GetValue("MARK_TARGET_ID"))
    if mp and tp then
        _bannerX = (mp.x + tp.x) / 2
    end
    CreateBannerNode(_bannerX)
    ShowTip("旗立了——三秒圈内加三成，抢位")
end

-- 圈内判定
local function InBanner(x)
    if _bannerT <= 0 then return false end
    return math.abs(x - _bannerX) <= CONST.BANNER_R
end

-- 定时器
if not _scheduler then
    _scheduler = SL:Schedule(function(dt)
        _cdLeft = math.max(0, _cdLeft - dt)
        if _bannerT <= 0 then return end
        _bannerT = _bannerT - dt
        if _bannerT <= 0 then
            ShowTip("旗倒了——加成散了")
        end
        local myID = SL:GetValue("USER_ID")
        local mp = GetActorPos(myID)
        if mp then
            SL:SetNextAttackAmp(
                InBanner(mp.x) and CONST.IN_AMP or 1.0)
        end
    end, 0.02)
end

SL:RegisterLUAEvent(LUA_EVENT_SCENE_CLEAR, "WBN_Clear", function()
    _bannerT = 0
    SL:SetNextAttackAmp(1.0)
end)

SL:ScheduleOnce(function()
    ShowTip("技能已加载: 破军旗 (调试按钮触发)")
end, 1.0)

return WarBanner