双生门：走进这一扇走出另一扇

fx-portal

local TwinGate = {}
local CONST = { MSG_ID = 12180, KEY = "TwinGate", WARP_T = 0.2 }

function TwinGate.Open(gateA, gateB)
    TwinGate._gates = { gateA, gateB }
    -- 双生门是场景常驻物: 出视口不销毁, 只暂停涡旋动画
    SL:RegisterLUAEvent(LUA_EVENT_ACTOR_OUT_OF_VIEW, "TwinGate", function()
        TwinGate.PauseVortex()
    end)
end

function TwinGate:OnEnterGate(gateIndex, actorID)
    if self._warping then return end                    -- 穿门中防重入
    self._warping = true
    local out = self._gates[3 - gateIndex]              -- 另一扇门

    SL:ScheduleOnce(function()
        -- 入口收缩完成: 此刻换坐标
        SL:SendLuaNetMsg(CONST.MSG_ID, 0, 0, 0,
            SL:JsonEncode({ key = CONST.KEY, op = 2, actorID = actorID,
                            x = out.x, y = out.y }))
        self._exitGate = out
    end, CONST.WARP_T * 1000)
end

SL:RegisterLuaNetMsg(CONST.MSG_ID, function(_, p1, p2, p3, msgData)
    local d = SL:JsonDecode(msgData)
    if d.key ~= CONST.KEY or d.op ~= 2 then return end
    local a = FindActor(d.actorID)
    if a then
        a:SetPosition(d.x, d.y)
        a:PlaySpawnScaleIn(CONST.WARP_T)                -- 出口绽放
    end
end)

return TwinGate