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115 lines
5.0 KiB
C
115 lines
5.0 KiB
C
/*****************************************************************************/
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/* */
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/* joystick.h */
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/* */
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/* Read the joystick on systems that support it */
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/* */
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/* */
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/* */
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/* (C) 1998-2004 Ullrich von Bassewitz */
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/* Römerstrasse 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.org */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#ifndef _JOYSTICK_H
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#define _JOYSTICK_H
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/*****************************************************************************/
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/* Definitions */
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/*****************************************************************************/
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/* Error codes */
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#define JOY_ERR_OK 0 /* No error */
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#define JOY_ERR_NO_DRIVER 1 /* No driver available */
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#define JOY_ERR_CANNOT_LOAD 2 /* Error loading driver */
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#define JOY_ERR_INV_DRIVER 3 /* Invalid driver */
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#define JOY_ERR_NO_DEVICE 4 /* Device (hardware) not found */
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/* Argument for the joy_read function */
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#define JOY_1 0
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#define JOY_2 1
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/* The following codes are *indices* into the joy_masks array */
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#define JOY_UP 0
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#define JOY_DOWN 1
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#define JOY_LEFT 2
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#define JOY_RIGHT 3
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#define JOY_FIRE 4
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#define JOY_FIRE2 5 /* Second fire button if available */
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/* Array of masks used to check the return value of joy_read for a state */
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extern const unsigned char joy_masks[8];
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/* Macros that evaluate the return code of joy_read */
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#define JOY_BTN_UP(v) ((v) & joy_masks[JOY_UP])
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#define JOY_BTN_DOWN(v) ((v) & joy_masks[JOY_DOWN])
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#define JOY_BTN_LEFT(v) ((v) & joy_masks[JOY_LEFT])
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#define JOY_BTN_RIGHT(v) ((v) & joy_masks[JOY_RIGHT])
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#define JOY_BTN_FIRE(v) ((v) & joy_masks[JOY_FIRE])
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#define JOY_BTN_FIRE2(v) ((v) & joy_masks[JOY_FIRE2])
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/* The name of the standard joystick driver for a platform */
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extern const char joy_stddrv[];
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/*****************************************************************************/
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/* Functions */
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/*****************************************************************************/
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unsigned char __fastcall__ joy_load_driver (const char* driver);
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/* Load and install a joystick driver. Return an error code. */
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unsigned char __fastcall__ joy_unload (void);
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/* Uninstall, then unload the currently loaded driver. */
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unsigned char __fastcall__ joy_install (void* driver);
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/* Install an already loaded driver. Return an error code. */
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unsigned char __fastcall__ joy_uninstall (void);
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/* Uninstall the currently loaded driver and return an error code.
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* Note: This call does not free allocated memory.
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*/
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unsigned char __fastcall__ joy_count (void);
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/* Return the number of joysticks supported by the driver */
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unsigned char __fastcall__ joy_read (unsigned char joystick);
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/* Read a particular joystick */
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/* End of joystick.h */
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#endif
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