[fceu.git] / drivers / cli / sdl-joystick.c

/* FCE Ultra - NES/Famicom Emulator
 *
 * Copyright notice for this file:
 *  Copyright (C) 2002 Ben Parnell
 *  Copyright (C) 2002 Paul Kuliniewicz
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/* PK: SDL joystick input stuff */

#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>

#include "sdl.h"
#ifndef GP2X
static SDL_Joystick *jo[4] = {NULL, NULL, NULL, NULL};
static void ConfigJoystick (int z);

#define JOY_A		0x01
#define JOY_B		0x02
#define JOY_SELECT	0x04
#define JOY_START	0x08
#define JOY_UP		0x10
#define JOY_DOWN	0x20
#define JOY_LEFT	0x40
#define JOY_RIGHT	0x80
#endif

/* Gets the current joystick position information. */
uint32 GetJSOr (void)
{
#ifndef GP2X
	int n;			/* joystick index */
	int b;			/* button index */
	int *joym;		/* pointer to a joystick's button map */
	Sint16 pos;		/* axis position */
	uint32 ret = 0;		/* return value */

	for (n = 0; n < 4; n++)
	{
		if (joy[n] == 0)
			continue;
		joym = joyBMap[n];

		/* Axis information. */
		pos = SDL_JoystickGetAxis(jo[n], joyAMap[n][0]);
		if (pos <= -16383)
			ret |= JOY_LEFT << (n << 3);
		else if (pos >= 16363)
			ret |= JOY_RIGHT << (n << 3);
		pos = SDL_JoystickGetAxis(jo[n], joyAMap[n][1]);
		if (pos <= -16383)
			ret |= JOY_UP << (n << 3);
		else if (pos >= 16383)
			ret |= JOY_DOWN << (n << 3);

		/* Button information. */
		for (b = 0; b < 4; b++)
		{
			if (SDL_JoystickGetButton(jo[n], joym[b]))
				ret |= (1 << b) << (n << 3);
		}
	}

	return ret;
#else
	return 0;
#endif
}

/* Cleanup opened joysticks. */
void KillJoysticks (void)
{
#ifndef GP2X
	int n;			/* joystick index */

	for (n = 0; n < 4; n++)
	{
		if (joy[n] != 0)
			SDL_JoystickClose(jo[n]);
	}
	SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
	return;
#endif
}

/* Initialize joysticks. */
int InitJoysticks (void)
{
#ifndef GP2X
	int n;			/* joystick index */
	if(!(joy[0]|joy[1]|joy[2]|joy[3]))
	 return(0);
	SDL_InitSubSystem(SDL_INIT_JOYSTICK);
	for (n = 0; n < 4; n++)
	{
		if (joy[n] == 0)
			continue;
		
		/* Open the joystick under SDL. */
		jo[n] = SDL_JoystickOpen(joy[n] - 1);
		if (jo[n] == NULL)
		{
			printf("Could not open joystick %d: %s.\n",
				joy[n] - 1, SDL_GetError());
			joy[n] = 0;
			continue;
		}

		/* Check for a button map. */
		if (!(joyBMap[n][0] | joyBMap[n][1] | joyBMap[n][2] |
			joyBMap[n][3]))
		{
			ConfigJoystick(n);
		}
	}

	return (1);
#endif
}

#define WNOINPUT(); for(;;){uint8 t; if(read(fileno(stdin),&t,1)==-1) \
			{break;}}

/* Configure a joystick button. */
static void BConfig (int n, int b)
{
#ifndef GP2X
	SDL_Event event;		/* SDL event structure */
	WNOINPUT();
	while (1)
	{
		uint8 t;
		if (read(fileno(stdin), &t, 1) == -1)
		{
			if (errno != EAGAIN)
				break;
		}
		else
			break;
		
		if (SDL_PollEvent(&event) && event.type == SDL_JOYBUTTONDOWN)
		{
			joyBMap[n][b] = event.jbutton.button;
			goto endsa;
		}
	}

	endsa:
	WNOINPUT();

	return;
#endif
}

/* Joystick button and axis configuration. */
void ConfigJoystick (int n)
{
#ifndef GP2X
	int sa;			/* buffer value */
	char buf[128];		/* input buffer */

	printf("\n\n Joystick button and axis configuration:\n\n");
	printf("   Select the joystick axes to use for the virtual d-pad.\n");
	printf("   If you do not wish to assign an axis, press Enter to skip\n");
	printf("   that axis.\n");
	printf("   Push the button to map to the virtual joystick.\n");
	printf("   If you do not wish to assign a button, press Enter to skip\n");
	printf("   that button.\n   Press enter to continue...\n");
	getchar();
	printf("****  Configuring joystick %d ****\n\n", n + 1);

	printf("** Enter axis to use for the x-axis (default 0).\n");
	fgets(buf, sizeof(buf), stdin);
	joyAMap[n][0] = ('0' <= buf[0] && buf[9] <= '9') ? atoi(buf) : 0;

	printf("** Enter axis to use for the y-axis (default 1).\n");
	fgets(buf, sizeof(buf), stdin);
	joyAMap[n][1] = ('0' <= buf[0] && buf[9] <= '9') ? atoi(buf) : 1;

	sa = fcntl(fileno(stdin), F_GETFL);
	fcntl(fileno(stdin), F_SETFL, O_NONBLOCK);

	printf("** Press button for \"Select\".\n");
	BConfig(n, 2);

	printf("** Press button for \"Start\".\n");
	BConfig(n, 3);

	printf("** Press button for \"B\".\n");
	BConfig(n, 1);

	printf("** Press button for \"A\".\n");
	BConfig(n, 0);
	
	fcntl(fileno(stdin), F_SETFL, sa);
#endif
}
Commit	Line	Data
c62d2810	1	/* FCE Ultra - NES/Famicom Emulator
	2	*
	3	* Copyright notice for this file:
	4	* Copyright (C) 2002 Ben Parnell
	5	* Copyright (C) 2002 Paul Kuliniewicz
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	20	*/
	21
	22	/* PK: SDL joystick input stuff */
	23
	24	#include <stdlib.h>
	25	#include <unistd.h>
	26	#include <fcntl.h>
	27	#include <errno.h>
	28
	29	#include "sdl.h"
5232c20c	30	#ifndef GP2X
c62d2810	31	static SDL_Joystick *jo[4] = {NULL, NULL, NULL, NULL};
c62d2810	32	static void ConfigJoystick (int z);
	33
	34	#define JOY_A 0x01
	35	#define JOY_B 0x02
	36	#define JOY_SELECT 0x04
	37	#define JOY_START 0x08
	38	#define JOY_UP 0x10
	39	#define JOY_DOWN 0x20
	40	#define JOY_LEFT 0x40
	41	#define JOY_RIGHT 0x80
5232c20c	42	#endif
c62d2810	43
	44	/* Gets the current joystick position information. */
	45	uint32 GetJSOr (void)
	46	{
5232c20c	47	#ifndef GP2X
c62d2810	48	int n; /* joystick index */
	49	int b; /* button index */
	50	int joym; / pointer to a joystick's button map */
	51	Sint16 pos; /* axis position */
	52	uint32 ret = 0; /* return value */
	53
	54	for (n = 0; n < 4; n++)
	55	{
	56	if (joy[n] == 0)
	57	continue;
	58	joym = joyBMap[n];
	59
	60	/* Axis information. */
	61	pos = SDL_JoystickGetAxis(jo[n], joyAMap[n][0]);
	62	if (pos <= -16383)
	63	ret \|= JOY_LEFT << (n << 3);
	64	else if (pos >= 16363)
	65	ret \|= JOY_RIGHT << (n << 3);
	66	pos = SDL_JoystickGetAxis(jo[n], joyAMap[n][1]);
	67	if (pos <= -16383)
	68	ret \|= JOY_UP << (n << 3);
	69	else if (pos >= 16383)
	70	ret \|= JOY_DOWN << (n << 3);
	71
	72	/* Button information. */
	73	for (b = 0; b < 4; b++)
	74	{
	75	if (SDL_JoystickGetButton(jo[n], joym[b]))
	76	ret \|= (1 << b) << (n << 3);
	77	}
	78	}
	79
	80	return ret;
5232c20c	81	#else
	82	return 0;
	83	#endif
c62d2810	84	}
	85
	86	/* Cleanup opened joysticks. */
	87	void KillJoysticks (void)
	88	{
5232c20c	89	#ifndef GP2X
c62d2810	90	int n; /* joystick index */
	91
	92	for (n = 0; n < 4; n++)
	93	{
	94	if (joy[n] != 0)
	95	SDL_JoystickClose(jo[n]);
	96	}
	97	SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
	98	return;
5232c20c	99	#endif
c62d2810	100	}
	101
	102	/* Initialize joysticks. */
	103	int InitJoysticks (void)
	104	{
5232c20c	105	#ifndef GP2X
c62d2810	106	int n; /* joystick index */
	107	if(!(joy[0]\|joy[1]\|joy[2]\|joy[3]))
	108	return(0);
	109	SDL_InitSubSystem(SDL_INIT_JOYSTICK);
	110	for (n = 0; n < 4; n++)
	111	{
	112	if (joy[n] == 0)
	113	continue;
	114
	115	/* Open the joystick under SDL. */
	116	jo[n] = SDL_JoystickOpen(joy[n] - 1);
	117	if (jo[n] == NULL)
	118	{
	119	printf("Could not open joystick %d: %s.\n",
	120	joy[n] - 1, SDL_GetError());
	121	joy[n] = 0;
	122	continue;
	123	}
	124
	125	/* Check for a button map. */
	126	if (!(joyBMap[n][0] \| joyBMap[n][1] \| joyBMap[n][2] \|
	127	joyBMap[n][3]))
	128	{
	129	ConfigJoystick(n);
	130	}
	131	}
	132
	133	return (1);
5232c20c	134	#endif
c62d2810	135	}
	136
	137	#define WNOINPUT(); for(;;){uint8 t; if(read(fileno(stdin),&t,1)==-1) \
	138	{break;}}
	139
	140	/* Configure a joystick button. */
	141	static void BConfig (int n, int b)
	142	{
5232c20c	143	#ifndef GP2X
c62d2810	144	SDL_Event event; /* SDL event structure */
	145	WNOINPUT();
	146	while (1)
	147	{
	148	uint8 t;
	149	if (read(fileno(stdin), &t, 1) == -1)
	150	{
	151	if (errno != EAGAIN)
	152	break;
	153	}
	154	else
	155	break;
	156
	157	if (SDL_PollEvent(&event) && event.type == SDL_JOYBUTTONDOWN)
	158	{
	159	joyBMap[n][b] = event.jbutton.button;
	160	goto endsa;
	161	}
	162	}
	163
	164	endsa:
	165	WNOINPUT();
	166
	167	return;
5232c20c	168	#endif
c62d2810	169	}
	170
	171	/* Joystick button and axis configuration. */
	172	void ConfigJoystick (int n)
	173	{
5232c20c	174	#ifndef GP2X
c62d2810	175	int sa; /* buffer value */
	176	char buf[128]; /* input buffer */
	177
	178	printf("\n\n Joystick button and axis configuration:\n\n");
	179	printf(" Select the joystick axes to use for the virtual d-pad.\n");
	180	printf(" If you do not wish to assign an axis, press Enter to skip\n");
	181	printf(" that axis.\n");
	182	printf(" Push the button to map to the virtual joystick.\n");
	183	printf(" If you do not wish to assign a button, press Enter to skip\n");
	184	printf(" that button.\n Press enter to continue...\n");
	185	getchar();
	186	printf("** Configuring joystick %d **\n\n", n + 1);
	187
	188	printf("** Enter axis to use for the x-axis (default 0).\n");
	189	fgets(buf, sizeof(buf), stdin);
	190	joyAMap[n][0] = ('0' <= buf[0] && buf[9] <= '9') ? atoi(buf) : 0;
	191
	192	printf("** Enter axis to use for the y-axis (default 1).\n");
	193	fgets(buf, sizeof(buf), stdin);
	194	joyAMap[n][1] = ('0' <= buf[0] && buf[9] <= '9') ? atoi(buf) : 1;
	195
	196	sa = fcntl(fileno(stdin), F_GETFL);
	197	fcntl(fileno(stdin), F_SETFL, O_NONBLOCK);
	198
	199	printf("** Press button for \"Select\".\n");
	200	BConfig(n, 2);
	201
	202	printf("** Press button for \"Start\".\n");
	203	BConfig(n, 3);
	204
	205	printf("** Press button for \"B\".\n");
	206	BConfig(n, 1);
	207
	208	printf("** Press button for \"A\".\n");
	209	BConfig(n, 0);
	210
	211	fcntl(fileno(stdin), F_SETFL, sa);
5232c20c	212	#endif
c62d2810	213	}