update open trunk example (#12)

examples/open_trunk_example/bs_vehicletrunk/bs_vehicletrunk.cpp

@@ -0,0 +1,52 @@
+ /********************************************************************************
+ * Copyright (c) 2025-2026 ZF Friedrichshafen AG
+ *
+ * This program and the accompanying materials are made available under the 
+ * terms of the Apache License Version 2.0 which is available at
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * SPDX-License-Identifier: Apache-2.0 
+ ********************************************************************************/
+
+#include <iostream>
+#include "bs_vehicletrunk.h"
+
+/**
+ * @brief Constructor
+ */
+CBasicServiceVehicleTrunk::CBasicServiceVehicleTrunk()
+{
+	m_ptrOpen = sdv::core::GetObject("Vehicle.Body.Trunk_Device").GetInterface<vss::Vehicle::Body::TrunkDevice::IVSS_WriteOpen>();
+	if (!m_ptrOpen)
+	{
+		SDV_LOG_ERROR("Could not get interface 'IVSS_WriteOpen': [CBasicServiceVehicleTrunk]");
+		throw std::runtime_error("Open device not found");
+	}
+
+    // Request the basic service for speed. 
+    auto pSpeedSvc = sdv::core::GetObject("Vehicle.Speed_Service").GetInterface<vss::Vehicle::SpeedService::IVSS_GetSpeed>();
+    if (pSpeedSvc)
+    {
+        // Register speed change event handler.
+        pSpeedSvc->RegisterOnSignalChangeOfVehicleSpeed(static_cast<vss::Vehicle::SpeedService::IVSS_SetSpeed_Event*> (this));
+    }
+
+	SDV_LOG_TRACE("CBasicServiceVehicleTrunk created.");
+}
+
+/**
+ * @brief Open
+ * @param[in] value
+ * @return true on success otherwise false 
+ */
+bool CBasicServiceVehicleTrunk::SetOpen(bool value)
+{
+	if (m_Speed)
+		return false;
+	return m_ptrOpen->WriteOpen(value);
+}
+
+void CBasicServiceVehicleTrunk::SetSpeed(float value)
+{
+    m_Speed = value;
+}