JoystickPort.cc

Go to the documentation of this file.

#include "JoystickPort.hh"
#include "JoystickDevice.hh"
#include "DummyJoystick.hh"
#include "PluggingController.hh"
#include "checked_cast.hh"
#include "serialize.hh"
#include <memory>
 
namespace openmsx {
 
JoystickPort::JoystickPort(PluggingController& pluggingController_,
                           std::string name_, static_string_view description_)
        : Connector(pluggingController_, std::move(name_), std::make_unique<DummyJoystick>())
        , lastValue(255) // != 0
        , description(description_)
{
}
 
std::string_view JoystickPort::getDescription() const
{
        return description;
}
 
std::string_view JoystickPort::getClass() const
{
        return "Joystick Port";
}
 
JoystickDevice& JoystickPort::getPluggedJoyDev() const
{
        return *checked_cast<JoystickDevice*>(&getPlugged());
}
 
void JoystickPort::plug(Pluggable& device, EmuTime::param time)
{
        Connector::plug(device, time);
        getPluggedJoyDev().write(lastValue, time);
}
 
byte JoystickPort::read(EmuTime::param time)
{
        return getPluggedJoyDev().read(time);
}
 
void JoystickPort::write(byte value, EmuTime::param time)
{
        if (lastValue != value) writeDirect(value, time);
}
void JoystickPort::writeDirect(byte value, EmuTime::param time)
{
        lastValue = value;
        getPluggedJoyDev().write(value, time);
}
 
template<typename Archive>
void JoystickPort::serialize(Archive& ar, unsigned /*version*/)
{
        ar.template serializeBase<Connector>(*this);
        if constexpr (Archive::IS_LOADER) {
                // The value of 'lastValue', is already restored via MSXPSG,
                // but we still need to re-write this value to the plugged
                // devices (do this after those devices have been re-plugged).
                writeDirect(lastValue, getPluggingController().getCurrentTime());
        }
}
INSTANTIATE_SERIALIZE_METHODS(JoystickPort);
 
 
// class DummyJoystickPort
 
byte DummyJoystickPort::read(EmuTime::param /*time*/)
{
        return 0x3F; // do as-if nothing is connected
}
 
void DummyJoystickPort::write(byte /*value*/, EmuTime::param /*time*/)
{
        // ignore writes
}
 
} // namespace openmsx