fix: Pipe offset detection

Detect pipe offset also when the auger wagon with the
pipe is not directly attached to the tractor, such in
case of the Annaburger AW 22.16, which is attached through
the HTS 22B.79 platform.

#931

Author: Peter Vaiko

scripts/specializations/CpVehicleSettings.lua

@@ -431,11 +431,17 @@ end
 --- If the vehicle has a pipe, instantiate a pipe controller to measure the pipe offsets. This is better
 --- done here and not when the vehicle starts as measuring is a hack and may mess up the vehicle states.
 function CpVehicleSettings:setPipeOffset()
-    local pipeObject = AIUtil.getImplementOrVehicleWithSpecialization(self, Pipe)
-    if self.isServer and pipeObject then
+    local childVehiclesWithPipe, found = AIUtil.getAllChildVehiclesWithSpecialization(self, Pipe)
+    if #childVehiclesWithPipe > 1 then
+        CpUtil.infoVehicle(CpDebug.DBG_IMPLEMENTS, self, "More than one pipe found, using the first one")
+        for _, vehicleWithPipe in ipairs(childVehiclesWithPipe) do
+            CpUtil.infoVehicle(CpDebug.DBG_IMPLEMENTS, self, "\t vehicle with pipe: %s", CpUtil.getName(vehicleWithPipe))
+        end
+    end
+    if self.isServer and childVehiclesWithPipe[1] ~= nil then
         local spec = self.spec_cpVehicleSettings
         -- ask the pipe controller to get the offsets
-        local pipeController = PipeController(self, pipeObject, true)
+        local pipeController = PipeController(self, childVehiclesWithPipe[1], true)
         spec.pipeOffsetX:setFloatValue(pipeController:getPipeOffsetX())
         spec.pipeOffsetZ:setFloatValue(pipeController:getPipeOffsetZ())
         CpUtil.debugVehicle(CpDebug.DBG_IMPLEMENTS, self, 'Pipe offsetX: %.1f, offsetZ: %.1f',