锁地：打它脚边的地，它进不了身

 fx-groundlock

-- @file GroundLock.lua
-- 锁地 —— 打它脚边的地，它进不了身

local GroundLock = {}

local CONST = {
    LOCK_LIFE     = 3.0,
    LOCK_CD       = 5.0,
    LOCK_RADIUS   = 50,

    COLOR_LOCK    = "#708858",
    COLOR_DEEP    = "#2a3a18",
    COLOR_GHOST   = "#c8e0a0",

    ZORDER_LOCK   = 130,
    ZORDER_FX     = 135,
    AUTOINC_BASE  = 1065000,
}

local _lockT     = 0
local _lockID    = 0
local _lockX     = 0
local _cdLeft    = 0
local _lockFx    = nil
local _scheduler = nil
local _autoInc   = 0

local function GenID(prefix)
    _autoInc = _autoInc + 1
    return string.format("%s_%d", prefix or "GLC",
        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 GroundLock.Cast()
    if _cdLeft > 0 or _lockT > 0 then return end
    local tid = SL:GetValue("MARK_TARGET_ID")
    local tp = GetActorPos(tid)
    if not tid or not tp then return end
    _cdLeft = CONST.LOCK_CD
    _lockT = CONST.LOCK_LIFE
    _lockID = tid
    _lockX = tp.x
    SL:FreezeActorMove(tid, CONST.LOCK_LIFE)
    SafeRemove(_lockFx)
    _lockFx = GUI:Layout_Create(GUI:Attach_SceneF(),
        GenID("Lock"), _lockX, tp.y, 0, 0, false)
    GUI:setLocalZOrder(_lockFx, CONST.ZORDER_LOCK)
    SL:PlayLockFx(tid)
    SL:TipAbove(tid, "锁地！")
    ShowTip("地封了——三秒里它进不了身")
end

-- 位移驳回：锁足期一切移动指令无效
SL:RegisterLUAEvent(LUA_EVENT_MOVE_REQUEST, "GLC_Stop", function(tid)
    if _lockT > 0 and tid == _lockID then
        return false
    end
    return true
end)

-- 定时器：锁地倒计时与图案跟脚
if not _scheduler then
    _scheduler = SL:Schedule(function(dt)
        _cdLeft = math.max(0, _cdLeft - dt)
        if _lockT > 0 then
            _lockT = _lockT - dt
            local tp = GetActorPos(_lockID)
            if _lockFx and tp then
                GUI:setPosition(_lockFx, _lockX, tp.y)
            end
            if _lockT <= 0 or not tp
                or SL:GetValue("ACTOR_DEAD", _lockID) then
                _lockT = 0
                SafeRemove(_lockFx)
                ShowTip("地解封了——它又能动了")
            end
        end
    end, 0.02)
end

SL:ScheduleOnce(function()
    SL:BindDebugButton("锁地", function()
        GroundLock.Cast()
    end)
    ShowTip("技能已加载: 锁地 (调试按钮触发)")
end, 1.0)

function GroundLock.Unload()
    if _scheduler then SL:Unschedule(_scheduler) end
    SL:UnregisterLUAEvent(LUA_EVENT_MOVE_REQUEST, "GLC_Stop")
    if _lockT > 0 then SL:ThawActorMove(_lockID) end
    SafeRemove(_lockFx)
    _lockT = 0
end

return GroundLock