fixed

42.13/media/lua/client/TowBar/TowingHooking.lua

@@ -33,6 +33,19 @@ local function getTowBarItem(playerObj)
     return inventory:getItemFromTypeRecurse("TowBar.TowBar")
 end
 
+local function sendTowAttachCommand(playerObj, args)
+    if not playerObj or not args then return end
+
+    -- MP-safe/server-authoritative attach path (Landtrain style).
+    if isClient() and isMultiplayer() then
+        sendClientCommand(playerObj, "towbar", "attachTowBar", args)
+        return
+    end
+
+    -- Keep vanilla attach path for SP/local behavior.
+    sendClientCommand(playerObj, "vehicle", "attachTrailer", args)
+end
+
 local TowbarVariantSize = 24
 local TowbarNormalStart = 0
 local TowbarLargeStart = 24
@@ -278,11 +291,38 @@ local function reattachTowBarPair(playerObj, towingVehicle, towedVehicle, requir
         attachmentA = attachmentA,
         attachmentB = attachmentB
     }
-    sendClientCommand(playerObj, "vehicle", "attachTrailer", args)
+    sendTowAttachCommand(playerObj, args)
     ISTimedActionQueue.add(TowBarScheduleAction:new(playerObj, 10, TowBarMod.Hook.setVehiclePostAttach, towedVehicle))
     return true
 end
 
+local function reattachTowBarPairAfterCleanDetach(playerObj, towingVehicle, towedVehicle, requireDriver)
+    if not playerObj or not towingVehicle or not towedVehicle then
+        return false
+    end
+    if requireDriver and not towingVehicle:isDriver(playerObj) then
+        return false
+    end
+
+    local detachArgs = {
+        towingVehicle = towingVehicle:getId(),
+        vehicle = towedVehicle:getId()
+    }
+    sendClientCommand(playerObj, "towbar", "detachTowBar", detachArgs)
+
+    -- World load/spawn can restore constraints in a bad state. Reattach one
+    -- short tick later so the detach is fully applied first.
+    ISTimedActionQueue.add(TowBarScheduleAction:new(
+        playerObj,
+        1,
+        reattachTowBarPair,
+        towingVehicle,
+        towedVehicle,
+        requireDriver
+    ))
+    return true
+end
+
 local function recoverTowBarVehicleAfterLoad(playerObj, vehicle, retriesLeft)
     if not vehicle then return end
 
@@ -295,8 +335,14 @@ local function recoverTowBarVehicleAfterLoad(playerObj, vehicle, retriesLeft)
     local localPlayer = playerObj or getPlayer()
     local towingVehicle = vehicle:getVehicleTowedBy()
 
+    if towingVehicle then
+        -- Apply rigid spacing as soon as the tow link exists to avoid a visible
+        -- bumper-to-bumper snap while waiting for reattach recovery.
+        TowBarMod.Hook.setVehiclePostAttach(nil, vehicle)
+    end
+
     if localPlayer and towingVehicle then
-        if reattachTowBarPair(localPlayer, towingVehicle, vehicle, false) then
+        if reattachTowBarPairAfterCleanDetach(localPlayer, towingVehicle, vehicle, false) then
             return
         end
     end
@@ -376,7 +422,7 @@ function TowBarMod.Hook.performAttachTowBar(playerObj, towingVehicle, towedVehic
         attachmentA = attachmentA,
         attachmentB = attachmentB
     }
-    sendClientCommand(playerObj, "vehicle", "attachTrailer", args)
+    sendTowAttachCommand(playerObj, args)
     ISTimedActionQueue.add(TowBarScheduleAction:new(playerObj, 10, TowBarMod.Hook.setVehiclePostAttach, towedVehicle))
 end