625 lines
16 KiB
C
625 lines
16 KiB
C
/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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#ifdef SAVE_RCSID
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static char rcsid =
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"@(#) $Id$";
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#endif
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/*
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* Atari Joystick/Joypad drivers
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*
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* Patrice Mandin
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <sys/cookie.h>
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#include <mint/osbind.h>
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#include "SDL_types.h"
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#include "SDL_error.h"
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#include "SDL_joystick.h"
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#include "SDL_sysjoystick.h"
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#include "SDL_joystick_c.h"
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#include "../video/ataricommon/SDL_ikbdinterrupt_s.h"
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/*--- Const ---*/
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/* We can have:
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1 joystick on IKBD port 1 (port 0 is used by mouse)
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2 joypads on ports A,B
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or 4 joysticks on joypads ports A,B
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or 1 lightpen on joypad port A
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or 2 analog paddles on joypads ports A,B
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2 joysticks on parallel port
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*/
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enum {
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IKBD_JOY1=0,
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PORTA_PAD,
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PORTB_PAD,
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PORTA_JOY0,
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PORTA_JOY1,
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PORTB_JOY0,
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PORTB_JOY1,
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PORTA_LP,
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PORTA_ANPAD,
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PORTB_ANPAD,
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#if 0
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PARA_JOY0,
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PARA_JOY1,
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#endif
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MAX_JOYSTICKS
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};
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enum {
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MCH_ST=0,
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MCH_STE,
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MCH_TT,
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MCH_F30
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};
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/* Joypad buttons
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* Procontroller note:
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* L,R are connected to 4,6
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* X,Y,Z are connected to 7,8,9
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*/
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enum {
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JP_UP=0, JP_DOWN, JP_LEFT, JP_RIGHT,
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JP_KPMULT, JP_KP7, JP_KP4, JP_KP1,
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JP_KP0, JP_KP8, JP_KP5, JP_KP2,
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JP_KPNUM, JP_KP9, JP_KP6, JP_KP3,
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JP_PAUSE, JP_FIRE0, JP_UNDEF0, JP_FIRE1,
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JP_UNDEF1, JP_FIRE2, JP_UNDEF2, JP_OPTION
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};
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#define JP_NUM_BUTTONS 17
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#define PORT_JS_RIGHT (1<<0)
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#define PORT_JS_LEFT (1<<1)
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#define PORT_JS_DOWN (1<<2)
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#define PORT_JS_UP (1<<3)
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#define PORT_JS_FIRE (1<<4)
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/*--- Types ---*/
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typedef struct {
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SDL_bool enabled;
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unsigned char *name;
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Uint32 prevstate;
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} atarijoy_t;
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/*--- Variables ---*/
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static atarijoy_t atarijoysticks[MAX_JOYSTICKS]={
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{SDL_FALSE,"IKBD joystick port 1",0},
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{SDL_FALSE,"Joypad port A",0},
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{SDL_FALSE,"Joypad port B",0},
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{SDL_FALSE,"Joystick 0 port A",0},
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{SDL_FALSE,"Joystick 1 port A",0},
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{SDL_FALSE,"Joystick 0 port B",0},
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{SDL_FALSE,"Joystick 1 port B",0},
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{SDL_FALSE,"Lightpen port A",0},
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{SDL_FALSE,"Analog paddle port A",0},
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{SDL_FALSE,"Analog paddle port B",0}
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#if 0
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,{SDL_FALSE,"Joystick 0 parallel port",0},
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{SDL_FALSE,"Joystick 1 parallel port",0}
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#endif
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};
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static const int jp_buttons[JP_NUM_BUTTONS]={
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JP_KPMULT, JP_KP7, JP_KP4, JP_KP1,
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JP_KP0, JP_KP8, JP_KP5, JP_KP2,
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JP_KPNUM, JP_KP9, JP_KP6, JP_KP3,
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JP_PAUSE, JP_FIRE0, JP_FIRE1, JP_FIRE2,
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JP_OPTION
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};
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static SDL_bool joypad_ports_enabled=SDL_FALSE;
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/* Updated joypad ports */
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static Uint16 jp_paddles[4];
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static Uint16 jp_lightpens[2];
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static Uint16 jp_directions;
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static Uint16 jp_fires;
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static Uint32 jp_joypads[2];
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/*--- Functions prototypes ---*/
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static int GetEnabledAtariJoystick(int index);
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static void UpdateJoypads(void);
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/*--- Functions ---*/
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int SDL_SYS_JoystickInit(void)
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{
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int i;
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unsigned long cookie_mch;
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const char *envr=getenv("SDL_JOYSTICK_ATARI");
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const char *env_evt=getenv("SDL_ATARI_EVENTSDRIVER");
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SDL_bool ikbd_enabled=SDL_FALSE;
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#define TEST_JOY_ENABLED(env,idstring,num) \
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if (strstr(env,idstring"-off")) { \
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atarijoysticks[num].enabled=SDL_FALSE; \
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} \
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if (strstr(env,idstring"-on")) { \
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atarijoysticks[num].enabled=SDL_TRUE; \
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}
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/* Cookie _MCH present ? if not, assume ST machine */
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if (Getcookie(C__MCH, &cookie_mch) != C_FOUND) {
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cookie_mch = MCH_ST << 16;
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}
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/* Enable some default joysticks */
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if ((cookie_mch == MCH_ST<<16) || ((cookie_mch>>16) == MCH_STE) ||
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(cookie_mch == MCH_TT<<16) || (cookie_mch == MCH_F30<<16)) {
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ikbd_enabled=SDL_TRUE;
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if (env_evt) {
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if (!strcmp(env_evt,"ikbd")) {
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ikbd_enabled=SDL_FALSE;
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}
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}
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atarijoysticks[IKBD_JOY1].enabled=ikbd_enabled;
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}
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if ((cookie_mch == MCH_STE<<16) || (cookie_mch == MCH_F30<<16)) {
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atarijoysticks[PORTA_PAD].enabled=SDL_TRUE;
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atarijoysticks[PORTB_PAD].enabled=SDL_TRUE;
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}
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/* Read environment for joysticks to enable */
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if (envr) {
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/* IKBD on any Atari, maybe clones */
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if ((cookie_mch == MCH_ST<<16) || ((cookie_mch>>16) == MCH_STE) ||
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(cookie_mch == MCH_TT<<16) || (cookie_mch == MCH_F30<<16)) {
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if (env_evt) {
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if (strcmp(env_evt,"ikbd")) {
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TEST_JOY_ENABLED(envr, "ikbd-joy1", IKBD_JOY1);
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}
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}
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}
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/* Joypads ports only on STE and Falcon */
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if ((cookie_mch == MCH_STE<<16) || (cookie_mch == MCH_F30<<16)) {
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TEST_JOY_ENABLED(envr, "porta-pad", PORTA_PAD);
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if (!atarijoysticks[PORTA_PAD].enabled) {
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TEST_JOY_ENABLED(envr, "porta-joy0", PORTA_JOY0);
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TEST_JOY_ENABLED(envr, "porta-joy1", PORTA_JOY1);
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if (!(atarijoysticks[PORTA_JOY0].enabled) && !(atarijoysticks[PORTA_JOY1].enabled)) {
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TEST_JOY_ENABLED(envr, "porta-lp", PORTA_LP);
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if (!atarijoysticks[PORTA_LP].enabled) {
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TEST_JOY_ENABLED(envr, "porta-anpad", PORTA_ANPAD);
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}
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}
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}
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TEST_JOY_ENABLED(envr, "portb-pad", PORTB_PAD);
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if (!atarijoysticks[PORTB_PAD].enabled) {
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TEST_JOY_ENABLED(envr, "portb-joy0", PORTB_JOY0);
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TEST_JOY_ENABLED(envr, "portb-joy1", PORTB_JOY1);
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if (!(atarijoysticks[PORTB_JOY0].enabled) && !(atarijoysticks[PORTB_JOY1].enabled)) {
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TEST_JOY_ENABLED(envr, "portb-anpad", PORTB_ANPAD);
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}
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}
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}
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#if 0
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/* Parallel port on any Atari, maybe clones */
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if ((cookie_mch == MCH_ST<<16) || ((cookie_mch>>16) == MCH_STE) ||
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(cookie_mch == MCH_TT<<16) || (cookie_mch == MCH_F30<<16)) {
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TEST_JOY_ENABLED(envr, "para-joy0", PARA_JOY0);
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TEST_JOY_ENABLED(envr, "para-joy1", PARA_JOY1);
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}
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#endif
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}
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/* Need to update joypad ports ? */
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joypad_ports_enabled=SDL_FALSE;
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for (i=PORTA_PAD;i<=PORTB_ANPAD;i++) {
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if (atarijoysticks[i].enabled) {
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joypad_ports_enabled=SDL_TRUE;
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break;
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}
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}
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SDL_numjoysticks = 0;
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for (i=0;i<MAX_JOYSTICKS;i++) {
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if (atarijoysticks[i].enabled) {
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++SDL_numjoysticks;
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}
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}
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return(SDL_numjoysticks);
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}
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static int GetEnabledAtariJoystick(int index)
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{
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int i,j;
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/* Return the nth'index' enabled atari joystick */
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j=0;
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for (i=0;i<MAX_JOYSTICKS;i++) {
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if (atarijoysticks[i].enabled) {
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if (j==index) {
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break;
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} else {
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j++;
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}
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}
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}
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if (i==MAX_JOYSTICKS)
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return -1;
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return i;
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}
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const char *SDL_SYS_JoystickName(int index)
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{
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int numjoystick;
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numjoystick=GetEnabledAtariJoystick(index);
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if (numjoystick==-1)
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return NULL;
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return(atarijoysticks[numjoystick].name);
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}
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int SDL_SYS_JoystickOpen(SDL_Joystick *joystick)
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{
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int numjoystick;
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numjoystick=GetEnabledAtariJoystick(joystick->index);
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if (numjoystick==-1)
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return -1;
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if ((numjoystick==PORTA_PAD) || (numjoystick==PORTB_PAD)) {
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joystick->nbuttons=JP_NUM_BUTTONS;
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} else if ((numjoystick==PORTA_LP) || (numjoystick==PORTA_ANPAD) ||
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(numjoystick==PORTB_ANPAD)) {
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joystick->nbuttons=2;
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} else {
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joystick->nbuttons=1;
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}
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joystick->naxes=2;
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joystick->nballs=0;
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joystick->nhats=0;
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return(0);
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}
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void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick)
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{
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int numjoystick;
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Uint32 curstate,prevstate;
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Sint16 curaxis;
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numjoystick=GetEnabledAtariJoystick(joystick->index);
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if (numjoystick==-1)
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return;
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prevstate = atarijoysticks[numjoystick].prevstate;
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if (joypad_ports_enabled) {
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Supexec(UpdateJoypads);
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}
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switch (numjoystick) {
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case IKBD_JOY1:
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{
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curstate = SDL_AtariIkbd_joystick & 0xff;
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if (curstate != prevstate) {
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/* X axis */
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if ((curstate & (IKBD_JOY_LEFT|IKBD_JOY_RIGHT)) != (prevstate & (IKBD_JOY_LEFT|IKBD_JOY_RIGHT))) {
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curaxis=0;
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if (curstate & IKBD_JOY_LEFT) {
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curaxis=-128;
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} else if (curstate & IKBD_JOY_RIGHT) {
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curaxis=127;
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}
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SDL_PrivateJoystickAxis(joystick,0,curaxis);
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}
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/* Y axis */
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if ((curstate & (IKBD_JOY_UP|IKBD_JOY_DOWN)) != (prevstate & (IKBD_JOY_UP|IKBD_JOY_DOWN))) {
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curaxis=0;
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if (curstate & IKBD_JOY_UP) {
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curaxis=-128;
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} else if (curstate & IKBD_JOY_DOWN) {
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curaxis=127;
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}
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SDL_PrivateJoystickAxis(joystick,1,curaxis);
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}
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/* Button */
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if ((curstate & IKBD_JOY_FIRE) && !(prevstate & IKBD_JOY_FIRE)) {
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SDL_PrivateJoystickButton(joystick,0,SDL_PRESSED);
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}
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if (!(curstate & IKBD_JOY_FIRE) && (prevstate & IKBD_JOY_FIRE)) {
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SDL_PrivateJoystickButton(joystick,0,SDL_RELEASED);
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}
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}
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atarijoysticks[IKBD_JOY1].prevstate = curstate;
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}
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break;
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case PORTA_PAD:
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case PORTB_PAD:
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{
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int numjoypad,i;
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numjoypad=0;
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/* if (numjoystick==PORTA_PAD) numjoypad=0;*/
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if (numjoystick==PORTB_PAD) numjoypad=1;
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curstate=jp_joypads[numjoypad];
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if (curstate!=prevstate) {
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/* X axis */
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if ((curstate & ((1<<JP_LEFT)|(1<<JP_RIGHT))) != (prevstate & ((1<<JP_LEFT)|(1<<JP_RIGHT)))) {
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curaxis=0;
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if (curstate & (1<<JP_LEFT)) {
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curaxis=-128;
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} else if (curstate & (1<<JP_RIGHT)) {
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curaxis=127;
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}
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SDL_PrivateJoystickAxis(joystick,0,curaxis);
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}
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/* Y axis */
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if ((curstate & ((1<<JP_UP)|(1<<JP_DOWN))) != (prevstate & ((1<<JP_UP)|(1<<JP_DOWN)))) {
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curaxis=0;
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if (curstate & (1<<JP_UP)) {
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curaxis=-128;
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} else if (curstate & (1<<JP_DOWN)) {
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curaxis=127;
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}
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SDL_PrivateJoystickAxis(joystick,1,curaxis);
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}
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/* Buttons */
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for (i=0;i<JP_NUM_BUTTONS;i++) {
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int button;
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button=1<<jp_buttons[i];
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if ((curstate & button) && !(prevstate & button)) {
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SDL_PrivateJoystickButton(joystick,i,SDL_PRESSED);
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}
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if (!(curstate & button) && (prevstate & button)) {
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SDL_PrivateJoystickButton(joystick,i,SDL_RELEASED);
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}
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}
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}
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atarijoysticks[numjoystick].prevstate = curstate;
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}
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break;
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case PORTA_JOY0:
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case PORTA_JOY1:
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case PORTB_JOY0:
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case PORTB_JOY1:
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{
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int fire_shift=0,dir_shift=0;
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if (numjoystick==PORTA_JOY0) { fire_shift=0; dir_shift=0; }
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if (numjoystick==PORTA_JOY1) { fire_shift=1; dir_shift=4; }
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if (numjoystick==PORTB_JOY0) { fire_shift=2; dir_shift=8; }
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if (numjoystick==PORTB_JOY1) { fire_shift=3; dir_shift=12; }
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curstate = (jp_directions>>dir_shift) & 15;
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curstate |= ((jp_fires>>fire_shift) & 1)<<4;
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if (curstate != prevstate) {
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/* X axis */
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if ((curstate & (PORT_JS_LEFT|PORT_JS_RIGHT)) != (prevstate & (PORT_JS_LEFT|PORT_JS_RIGHT))) {
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curaxis=0;
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if (curstate & PORT_JS_LEFT) {
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curaxis=-128;
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} else if (curstate & PORT_JS_RIGHT) {
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curaxis=127;
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}
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SDL_PrivateJoystickAxis(joystick,0,curaxis);
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}
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/* Y axis */
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if ((curstate & (PORT_JS_UP|PORT_JS_DOWN)) != (prevstate & (PORT_JS_UP|PORT_JS_DOWN))) {
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curaxis=0;
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if (curstate & PORT_JS_UP) {
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curaxis=-128;
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} else if (curstate & PORT_JS_DOWN) {
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curaxis=127;
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}
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SDL_PrivateJoystickAxis(joystick,1,curaxis);
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}
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/* Button */
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if ((curstate & PORT_JS_FIRE) && !(prevstate & PORT_JS_FIRE)) {
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SDL_PrivateJoystickButton(joystick,0,SDL_PRESSED);
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}
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if (!(curstate & PORT_JS_FIRE) && (prevstate & PORT_JS_FIRE)) {
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SDL_PrivateJoystickButton(joystick,0,SDL_RELEASED);
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}
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}
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atarijoysticks[numjoystick].prevstate = curstate;
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}
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break;
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case PORTA_LP:
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{
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int i;
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curstate = jp_lightpens[0]>>1;
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curstate |= (jp_lightpens[1]>>1)<<15;
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curstate |= (jp_fires & 3)<<30;
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if (curstate != prevstate) {
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/* X axis */
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SDL_PrivateJoystickAxis(joystick,0,(jp_lightpens[0]>>8)-128);
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/* Y axis */
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SDL_PrivateJoystickAxis(joystick,1,(jp_lightpens[1]>>8)-128);
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/* Buttons */
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for (i=0;i<2;i++) {
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int button;
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button=1<<(30+i);
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if ((curstate & button) && !(prevstate & button)) {
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SDL_PrivateJoystickButton(joystick,i,SDL_PRESSED);
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}
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if (!(curstate & button) && (prevstate & button)) {
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SDL_PrivateJoystickButton(joystick,i,SDL_RELEASED);
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}
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}
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}
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atarijoysticks[numjoystick].prevstate = curstate;
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}
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break;
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case PORTA_ANPAD:
|
|
case PORTB_ANPAD:
|
|
{
|
|
int numpaddle, i;
|
|
|
|
numpaddle=0<<1;
|
|
if (numjoystick==PORTB_ANPAD) numpaddle=1<<1;
|
|
|
|
curstate = jp_paddles[numpaddle]>>1;
|
|
curstate |= (jp_paddles[numpaddle+1]>>1)<<15;
|
|
curstate |= ((jp_fires>>numpaddle) & 3)<<30;
|
|
|
|
if (curstate != prevstate) {
|
|
/* X axis */
|
|
SDL_PrivateJoystickAxis(joystick,0,(jp_paddles[numpaddle]>>8)-128);
|
|
/* Y axis */
|
|
SDL_PrivateJoystickAxis(joystick,1,(jp_paddles[numpaddle+1]>>8)-128);
|
|
/* Buttons */
|
|
for (i=0;i<2;i++) {
|
|
int button;
|
|
|
|
button=1<<(30+i);
|
|
|
|
if ((curstate & button) && !(prevstate & button)) {
|
|
SDL_PrivateJoystickButton(joystick,i,SDL_PRESSED);
|
|
}
|
|
if (!(curstate & button) && (prevstate & button)) {
|
|
SDL_PrivateJoystickButton(joystick,i,SDL_RELEASED);
|
|
}
|
|
}
|
|
}
|
|
atarijoysticks[numjoystick].prevstate = curstate;
|
|
}
|
|
break;
|
|
#if 0
|
|
case PARA_JOY0:
|
|
case PARA_JOY1:
|
|
break;
|
|
#endif
|
|
};
|
|
|
|
return;
|
|
}
|
|
|
|
void SDL_SYS_JoystickClose(SDL_Joystick *joystick)
|
|
{
|
|
return;
|
|
}
|
|
|
|
void SDL_SYS_JoystickQuit(void)
|
|
{
|
|
SDL_numjoysticks=0;
|
|
return;
|
|
}
|
|
|
|
/*--- Joypad I/O read/write interface ---*/
|
|
|
|
#define JOYPAD_IO_BASE (0xffff9200)
|
|
struct JOYPAD_IO_S {
|
|
Uint16 fires;
|
|
Uint16 directions;
|
|
Uint16 dummy1[6];
|
|
Uint16 paddles[4];
|
|
Uint16 dummy2[4];
|
|
Uint16 lightpens[2];
|
|
};
|
|
#define JOYPAD_IO ((*(volatile struct JOYPAD_IO_S *)JOYPAD_IO_BASE))
|
|
|
|
static void UpdateJoypads(void)
|
|
{
|
|
Uint16 tmp;
|
|
|
|
/*--- This function is called in supervisor mode ---*/
|
|
|
|
/* Update joysticks */
|
|
jp_fires = (~(JOYPAD_IO.fires)) & 15;
|
|
jp_directions = (~(JOYPAD_IO.directions));
|
|
|
|
/* Update lightpen */
|
|
tmp = JOYPAD_IO.lightpens[0] & 1023;
|
|
jp_lightpens[0] = (tmp<<6) | (tmp>>4);
|
|
tmp = JOYPAD_IO.lightpens[1] & 1023;
|
|
jp_lightpens[1] = (tmp<<6) | (tmp>>4);
|
|
|
|
/* Update paddles */
|
|
tmp = (JOYPAD_IO.paddles[0] & 255);
|
|
jp_paddles[0] = (tmp<<8) | tmp;
|
|
tmp = (JOYPAD_IO.paddles[1] & 255);
|
|
jp_paddles[1] = (tmp<<8) | tmp;
|
|
tmp = (JOYPAD_IO.paddles[2] & 255);
|
|
jp_paddles[2] = (tmp<<8) | tmp;
|
|
tmp = (JOYPAD_IO.paddles[3] & 255);
|
|
jp_paddles[3] = (tmp<<8) | tmp;
|
|
|
|
/* Update joypad 0 */
|
|
JOYPAD_IO.directions=0xfffe;
|
|
jp_joypads[0]=((~(JOYPAD_IO.fires)) & 3)<<(16);
|
|
JOYPAD_IO.directions=0xfffe;
|
|
jp_joypads[0] |= ((~(JOYPAD_IO.directions))>>8) & 15;
|
|
|
|
JOYPAD_IO.directions=0xfffd;
|
|
jp_joypads[0] |= ((~(JOYPAD_IO.fires)) & 3)<<(16+2);
|
|
JOYPAD_IO.directions=0xfffd;
|
|
jp_joypads[0] |= (((~(JOYPAD_IO.directions))>>8) & 15)<<4;
|
|
|
|
JOYPAD_IO.directions=0xfffb;
|
|
jp_joypads[0] |= ((~(JOYPAD_IO.fires)) & 3)<<(16+4);
|
|
JOYPAD_IO.directions=0xfffb;
|
|
jp_joypads[0] |= (((~(JOYPAD_IO.directions))>>8) & 15)<<8;
|
|
|
|
JOYPAD_IO.directions=0xfff7;
|
|
jp_joypads[0] |= ((~(JOYPAD_IO.fires)) & 3)<<(16+6);
|
|
JOYPAD_IO.directions=0xfff7;
|
|
jp_joypads[0] |= (((~(JOYPAD_IO.directions))>>8) & 15)<<12;
|
|
|
|
/* Update joypad 1 */
|
|
JOYPAD_IO.directions=0xffef;
|
|
jp_joypads[1]=((~(JOYPAD_IO.fires)) & (3<<2))<<(16-2);
|
|
JOYPAD_IO.directions=0xffef;
|
|
jp_joypads[1] |= ((~(JOYPAD_IO.directions))>>12) & 15;
|
|
|
|
JOYPAD_IO.directions=0xffdf;
|
|
jp_joypads[1] |= ((~(JOYPAD_IO.fires)) & (3<<2))<<(16);
|
|
JOYPAD_IO.directions=0xffdf;
|
|
jp_joypads[1] |= (((~(JOYPAD_IO.directions))>>12) & 15)<<4;
|
|
|
|
JOYPAD_IO.directions=0xffbf;
|
|
jp_joypads[1] |= ((~(JOYPAD_IO.fires)) & (3<<2))<<(16+2);
|
|
JOYPAD_IO.directions=0xffbf;
|
|
jp_joypads[1] |= (((~(JOYPAD_IO.directions))>>12) & 15)<<8;
|
|
|
|
JOYPAD_IO.directions=0xff7f;
|
|
jp_joypads[1] |= ((~(JOYPAD_IO.fires)) & (3<<2))<<(16+4);
|
|
JOYPAD_IO.directions=0xff7f;
|
|
jp_joypads[1] |= (((~(JOYPAD_IO.directions))>>12) & 15)<<12;
|
|
}
|