glfw/src/joystick.c
2012-08-29 18:58:16 +02:00

129 lines
3.7 KiB
C

//========================================================================
// GLFW - An OpenGL library
// Platform: Any
// API version: 3.0
// WWW: http://www.glfw.org/
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
#include "internal.h"
//////////////////////////////////////////////////////////////////////////
////// GLFW public API //////
//////////////////////////////////////////////////////////////////////////
//========================================================================
// Determine joystick capabilities
//========================================================================
GLFWAPI int glfwGetJoystickParam(int joy, int param)
{
if (!_glfwInitialized)
{
_glfwSetError(GLFW_NOT_INITIALIZED, NULL);
return 0;
}
if (joy < 0 || joy > GLFW_JOYSTICK_LAST)
{
_glfwSetError(GLFW_INVALID_ENUM, NULL);
return 0;
}
return _glfwPlatformGetJoystickParam(joy, param);
}
//========================================================================
// Get joystick axis positions
//========================================================================
GLFWAPI int glfwGetJoystickAxes(int joy, float* axes, int numaxes)
{
int i;
if (!_glfwInitialized)
{
_glfwSetError(GLFW_NOT_INITIALIZED, NULL);
return 0;
}
if (joy < 0 || joy > GLFW_JOYSTICK_LAST)
{
_glfwSetError(GLFW_INVALID_ENUM, NULL);
return 0;
}
if (axes == NULL || numaxes < 0)
{
_glfwSetError(GLFW_INVALID_VALUE, NULL);
return 0;
}
// Clear positions
for (i = 0; i < numaxes; i++)
axes[i] = 0.0f;
return _glfwPlatformGetJoystickAxes(joy, axes, numaxes);
}
//========================================================================
// Get joystick button states
//========================================================================
GLFWAPI int glfwGetJoystickButtons(int joy,
unsigned char* buttons,
int numbuttons)
{
int i;
if (!_glfwInitialized)
{
_glfwSetError(GLFW_NOT_INITIALIZED, NULL);
return 0;
}
if (joy < 0 || joy > GLFW_JOYSTICK_LAST)
{
_glfwSetError(GLFW_INVALID_ENUM, NULL);
return 0;
}
if (buttons == NULL || numbuttons < 0)
{
_glfwSetError(GLFW_INVALID_VALUE, NULL);
return 0;
}
// Clear button states
for (i = 0; i < numbuttons; i++)
buttons[i] = GLFW_RELEASE;
return _glfwPlatformGetJoystickButtons(joy, buttons, numbuttons);
}