📄 sdl_sysjoystick.c
字号:
int numjoystick;
Uint32 curstate,prevstate;
Sint16 curaxis;
numjoystick=GetEnabledAtariJoystick(joystick->index);
if (numjoystick==-1)
return;
prevstate = atarijoysticks[numjoystick].prevstate;
if (joypad_ports_enabled) {
Supexec(UpdateJoypads);
}
switch (numjoystick) {
case IKBD_JOY1:
case XBIOS_JOY1:
{
curstate = 0;
if (numjoystick==IKBD_JOY1) {
curstate = SDL_AtariIkbd_joystick & 0xff;
}
if (numjoystick==XBIOS_JOY1) {
curstate = SDL_AtariXbios_joystick & 0xff;
}
if (curstate != prevstate) {
/* X axis */
if ((curstate & (IKBD_JOY_LEFT|IKBD_JOY_RIGHT)) != (prevstate & (IKBD_JOY_LEFT|IKBD_JOY_RIGHT))) {
curaxis=0;
if (curstate & IKBD_JOY_LEFT) {
curaxis=-128;
} else if (curstate & IKBD_JOY_RIGHT) {
curaxis=127;
}
SDL_PrivateJoystickAxis(joystick,0,curaxis);
}
/* Y axis */
if ((curstate & (IKBD_JOY_UP|IKBD_JOY_DOWN)) != (prevstate & (IKBD_JOY_UP|IKBD_JOY_DOWN))) {
curaxis=0;
if (curstate & IKBD_JOY_UP) {
curaxis=-128;
} else if (curstate & IKBD_JOY_DOWN) {
curaxis=127;
}
SDL_PrivateJoystickAxis(joystick,1,curaxis);
}
/* Button */
if ((curstate & IKBD_JOY_FIRE) && !(prevstate & IKBD_JOY_FIRE)) {
SDL_PrivateJoystickButton(joystick,0,SDL_PRESSED);
}
if (!(curstate & IKBD_JOY_FIRE) && (prevstate & IKBD_JOY_FIRE)) {
SDL_PrivateJoystickButton(joystick,0,SDL_RELEASED);
}
}
atarijoysticks[numjoystick].prevstate = curstate;
}
break;
case PORTA_PAD:
case PORTB_PAD:
{
int numjoypad,i;
numjoypad=0;
/* if (numjoystick==PORTA_PAD) numjoypad=0;*/
if (numjoystick==PORTB_PAD) numjoypad=1;
curstate=jp_joypads[numjoypad];
if (curstate!=prevstate) {
/* X axis */
if ((curstate & ((1<<JP_LEFT)|(1<<JP_RIGHT))) != (prevstate & ((1<<JP_LEFT)|(1<<JP_RIGHT)))) {
curaxis=0;
if (curstate & (1<<JP_LEFT)) {
curaxis=-128;
} else if (curstate & (1<<JP_RIGHT)) {
curaxis=127;
}
SDL_PrivateJoystickAxis(joystick,0,curaxis);
}
/* Y axis */
if ((curstate & ((1<<JP_UP)|(1<<JP_DOWN))) != (prevstate & ((1<<JP_UP)|(1<<JP_DOWN)))) {
curaxis=0;
if (curstate & (1<<JP_UP)) {
curaxis=-128;
} else if (curstate & (1<<JP_DOWN)) {
curaxis=127;
}
SDL_PrivateJoystickAxis(joystick,1,curaxis);
}
/* Buttons */
for (i=0;i<JP_NUM_BUTTONS;i++) {
int button;
button=1<<jp_buttons[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;
case PORTA_JOY0:
case PORTA_JOY1:
case PORTB_JOY0:
case PORTB_JOY1:
{
int fire_shift=0,dir_shift=0;
if (numjoystick==PORTA_JOY0) { fire_shift=0; dir_shift=0; }
if (numjoystick==PORTA_JOY1) { fire_shift=1; dir_shift=4; }
if (numjoystick==PORTB_JOY0) { fire_shift=2; dir_shift=8; }
if (numjoystick==PORTB_JOY1) { fire_shift=3; dir_shift=12; }
curstate = (jp_directions>>dir_shift) & 15;
curstate |= ((jp_fires>>fire_shift) & 1)<<4;
if (curstate != prevstate) {
/* X axis */
if ((curstate & (PORT_JS_LEFT|PORT_JS_RIGHT)) != (prevstate & (PORT_JS_LEFT|PORT_JS_RIGHT))) {
curaxis=0;
if (curstate & PORT_JS_LEFT) {
curaxis=-128;
} else if (curstate & PORT_JS_RIGHT) {
curaxis=127;
}
SDL_PrivateJoystickAxis(joystick,0,curaxis);
}
/* Y axis */
if ((curstate & (PORT_JS_UP|PORT_JS_DOWN)) != (prevstate & (PORT_JS_UP|PORT_JS_DOWN))) {
curaxis=0;
if (curstate & PORT_JS_UP) {
curaxis=-128;
} else if (curstate & PORT_JS_DOWN) {
curaxis=127;
}
SDL_PrivateJoystickAxis(joystick,1,curaxis);
}
/* Button */
if ((curstate & PORT_JS_FIRE) && !(prevstate & PORT_JS_FIRE)) {
SDL_PrivateJoystickButton(joystick,0,SDL_PRESSED);
}
if (!(curstate & PORT_JS_FIRE) && (prevstate & PORT_JS_FIRE)) {
SDL_PrivateJoystickButton(joystick,0,SDL_RELEASED);
}
}
atarijoysticks[numjoystick].prevstate = curstate;
}
break;
case PORTA_LP:
{
int i;
curstate = jp_lightpens[0]>>1;
curstate |= (jp_lightpens[1]>>1)<<15;
curstate |= (jp_fires & 3)<<30;
if (curstate != prevstate) {
/* X axis */
SDL_PrivateJoystickAxis(joystick,0,(jp_lightpens[0]>>8)-128);
/* Y axis */
SDL_PrivateJoystickAxis(joystick,1,(jp_lightpens[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;
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;
}
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