qzdoom-gpl/src/m_joy.cpp

// HEADER FILES ------------------------------------------------------------

#include "m_joy.h"
#include "gameconfigfile.h"

// MACROS ------------------------------------------------------------------

// TYPES -------------------------------------------------------------------

// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------

// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------

// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------

// EXTERNAL DATA DECLARATIONS ----------------------------------------------

// CODE --------------------------------------------------------------------

//==========================================================================
//
// M_SetJoystickConfigSection
//
// Sets up the config for reading or writing this controller's axis config. 
//
//==========================================================================

static bool M_SetJoystickConfigSection(IJoystickConfig *joy, bool create)
{
	FString id = "Joy:";
	id += joy->GetIdentifier();
	return GameConfig->SetSection(id, create);
}

//==========================================================================
//
// M_LoadJoystickConfig
//
//==========================================================================

bool M_LoadJoystickConfig(IJoystickConfig *joy)
{
	char key[32];
	const char *value;
	int axislen;
	int numaxes;

	joy->SetDefaultConfig();
	if (!M_SetJoystickConfigSection(joy, false))
	{
		return false;
	}
	value = GameConfig->GetValueForKey("Sensitivity");
	if (value != NULL)
	{
		joy->SetSensitivity((float)atof(value));
	}
	numaxes = joy->GetNumAxes();
	for (int i = 0; i < numaxes; ++i)
	{
		axislen = mysnprintf(key, countof(key), "Axis%u", i);

		mysnprintf(key + axislen, countof(key) - axislen, "deadzone");
		value = GameConfig->GetValueForKey(key);
		if (value != NULL)
		{
			joy->SetAxisDeadZone(i, (float)atof(value));
		}

		mysnprintf(key + axislen, countof(key) - axislen, "scale");
		value = GameConfig->GetValueForKey(key);
		if (value != NULL)
		{
			joy->SetAxisScale(i, (float)atof(value));
		}

		mysnprintf(key + axislen, countof(key) - axislen, "map");
		value = GameConfig->GetValueForKey(key);
		if (value != NULL)
		{
			EJoyAxis gameaxis = (EJoyAxis)atoi(value);
			if (gameaxis < JOYAXIS_None || gameaxis >= NUM_JOYAXIS)
			{
				gameaxis = JOYAXIS_None;
			}
			joy->SetAxisMap(i, gameaxis);
		}
	}
	return true;
}

//==========================================================================
//
// M_SaveJoystickConfig
//
// Only saves settings that are not at their defaults.
//
//==========================================================================

void M_SaveJoystickConfig(IJoystickConfig *joy)
{
	char key[32], value[32];
	int axislen, numaxes;

	if (M_SetJoystickConfigSection(joy, true))
	{
		GameConfig->ClearCurrentSection();
		if (!joy->IsSensitivityDefault())
		{
			mysnprintf(value, countof(value), "%g", joy->GetSensitivity());
			GameConfig->SetValueForKey("Sensitivity", value);
		}
		numaxes = joy->GetNumAxes();
		for (int i = 0; i < numaxes; ++i)
		{
			axislen = mysnprintf(key, countof(key), "Axis%u", i);

			if (!joy->IsAxisDeadZoneDefault(i))
			{
				mysnprintf(key + axislen, countof(key) - axislen, "deadzone");
				mysnprintf(value, countof(value), "%g", joy->GetAxisDeadZone(i));
				GameConfig->SetValueForKey(key, value);
			}
			if (!joy->IsAxisScaleDefault(i))
			{
				mysnprintf(key + axislen, countof(key) - axislen, "scale");
				mysnprintf(value, countof(value), "%g", joy->GetAxisScale(i));
				GameConfig->SetValueForKey(key, value);
			}
			if (!joy->IsAxisMapDefault(i))
			{
				mysnprintf(key + axislen, countof(key) - axislen, "map");
				mysnprintf(value, countof(value), "%d", joy->GetAxisMap(i));
				GameConfig->SetValueForKey(key, value);
			}
		}
		// If the joystick is entirely at its defaults, delete this section
		// so that we don't write out a lone section header.
		if (GameConfig->SectionIsEmpty())
		{
			GameConfig->DeleteCurrentSection();
		}
	}
}