Merge pull request #65 from MRPT/fix/no-joystick-crash

BUGFIX: Crash due to access uninitialized memory when no joystick is …

Author: jlblancoc

modules/simulator/src/VehicleDynamics/VehicleDifferential_ControllerTwistIdeal.cpp

@@ -75,7 +75,7 @@ void DynamicsDifferential::ControllerTwistIdeal::teleop_interface(
 
 	out.append_gui_lines += "[Controller=" + std::string(class_name()) + "]";
 
-	if (in.js)
+	if (in.js && in.js->axes.size() >= 2)
 	{
 		const auto& js = in.js.value();
 		const float js_x = js.axes[0];

modules/simulator/src/VehicleDynamics/VehicleDifferential_ControllerTwistPID.cpp

@@ -127,7 +127,7 @@ void DynamicsDifferential::ControllerTwistPID::teleop_interface(
 
 	out.append_gui_lines += "[Controller=" + std::string(class_name()) + "]";
 
-	if (in.js)
+	if (in.js && in.js->axes.size() >= 2)
 	{
 		const auto& js = in.js.value();
 		const float js_x = js.axes[0];

modules/simulator/src/VehicleDynamics/Vehicleackermann_Drivetrain_ControllerTwistFrontSteerPID.cpp

@@ -111,7 +111,7 @@ void DynamicsAckermannDrivetrain::ControllerTwistFrontSteerPID::teleop_interface
 
 	out.append_gui_lines += "[Controller=" + std::string(class_name()) + "]";
 
-	if (in.js)
+	if (in.js && in.js->axes.size() >= 2)
 	{
 		const auto& js = in.js.value();
 		const float js_x = js.axes[0];