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Added SDL joystick support.

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This commit is contained in:
Ryan C. Gordon 2005-08-31 21:13:02 +00:00
parent 5af249432d
commit db2b964527
1 changed files with 85 additions and 71 deletions
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156
code/unix/linux_glimp_sdl.c
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@ -109,14 +109,6 @@ cvar_t *joy_threshold = NULL;
cvar_t *r_allowSoftwareGL; // don't abort out if the pixelformat claims software
cvar_t *r_previousglDriver;
static int win_x, win_y;
static int num_vidmodes;
static int mouse_accel_numerator;
static int mouse_accel_denominator;
static int mouse_threshold;
/*
* Find the first occurrence of find in s.
*/
@ -1280,6 +1272,13 @@ extern cvar_t * in_joystick;
extern cvar_t * in_joystickDebug;
extern cvar_t * joy_threshold;
#define ARRAYLEN(x) (sizeof (x) / sizeof (x[0]))
struct
{
qboolean buttons[16]; // !!! FIXME: these might be too many.
unsigned int oldaxes;
} stick_state;
/**********************************************/
/* Joystick routines. */
@ -1294,6 +1293,7 @@ void IN_StartupJoystick( void )
SDL_JoystickClose(stick);
stick = NULL;
memset(&stick_state, '\0', sizeof (stick_state));
if( !in_joystick->integer ) {
Com_Printf( "Joystick is not active.\n" );
@ -1325,6 +1325,7 @@ void IN_StartupJoystick( void )
Com_Printf( "Joystick %d opened\n", i );
Com_Printf( "Name: %s\n", SDL_JoystickName(i) );
Com_Printf( "Axes: %d\n", SDL_JoystickNumAxes(stick) );
Com_Printf( "Hats: %d\n", SDL_JoystickNumHats(stick) );
Com_Printf( "Buttons: %d\n", SDL_JoystickNumButtons(stick) );
Com_Printf( "Balls: %d\n", SDL_JoystickNumBalls(stick) );
@ -1343,83 +1344,96 @@ void IN_StartupJoystick( void )
void IN_JoyMove( void )
{
if (!stick)
return;
qboolean joy_pressed[ARRAYLEN(joy_keys)];
unsigned int axes = 0;
int total = 0;
int i = 0;
SDL_JoystickUpdate();
if (!stick)
return;
#if 0 // !!! FIXME: convert this from the Linux codebase.
/* Store instantaneous joystick state. Hack to get around
* event model used in Linux joystick driver.
*/
static int axes_state[16];
/* Old bits for Quake-style input compares. */
static unsigned int old_axes = 0;
/* Our current goodies. */
unsigned int axes = 0;
int i = 0;
SDL_JoystickUpdate();
if( joy_fd == -1 ) {
return;
}
memset(joy_pressed, '\0', sizeof (joy_pressed));
/* Empty the queue, dispatching button presses immediately
* and updating the instantaneous state for the axes.
*/
do {
int n = -1;
struct js_event event;
n = read( joy_fd, &event, sizeof( event ) );
if( n == -1 ) {
/* No error, we're non-blocking. */
break;
// update the ball state.
total = SDL_JoystickNumBalls(stick);
if (total > 0)
{
int balldx = 0;
int balldy = 0;
for (i = 0; i < total; i++)
{
int dx = 0;
int dy = 0;
SDL_JoystickGetBall(stick, i, &dx, &dy);
balldx += dx;
balldy += dy;
}
if (balldx || balldy)
{
// !!! FIXME: is this good for stick balls, or just mice?
// Scale like the mouse input...
if (abs(balldx) > 1)
balldx *= 2;
if (abs(balldy) > 1)
balldy *= 2;
Sys_QueEvent( 0, SE_MOUSE, balldx, balldy, 0, NULL );
}
}
if( event.type & JS_EVENT_BUTTON ) {
Sys_QueEvent( 0, SE_KEY, K_JOY1 + event.number, event.value, 0, NULL );
} else if( event.type & JS_EVENT_AXIS ) {
if( event.number >= 16 ) {
continue;
}
axes_state[event.number] = event.value;
} else {
Com_Printf( "Unknown joystick event type\n" );
// now query the stick buttons...
total = SDL_JoystickNumButtons(stick);
if (total > 0)
{
if (total > ARRAYLEN(stick_state.buttons))
total = ARRAYLEN(stick_state.buttons);
for (i = 0; i < total; i++)
{
qboolean pressed = (SDL_JoystickGetButton(stick, i) != 0);
if (pressed != stick_state.buttons[i])
{
Sys_QueEvent( 0, SE_KEY, K_JOY1 + i, pressed, 0, NULL );
stick_state.buttons[i] = pressed;
}
}
}
} while( 1 );
// !!! FIXME: look at the hats...
/* Translate our instantaneous state to bits. */
for( i = 0; i < 16; i++ ) {
float f = ( (float) axes_state[i] ) / 32767.0f;
if( f < -joy_threshold->value ) {
axes |= ( 1 << ( i * 2 ) );
} else if( f > joy_threshold->value ) {
axes |= ( 1 << ( ( i * 2 ) + 1 ) );
// finally, look at the axes...
total = SDL_JoystickNumAxes(stick);
if (total > 0)
{
if (total > 16) total = 16;
for (i = 0; i < total; i++)
{
Sint16 axis = SDL_JoystickGetAxis(stick, i);
float f = ( (float) axis ) / 32767.0f;
if( f < -joy_threshold->value ) {
axes |= ( 1 << ( i * 2 ) );
} else if( f > joy_threshold->value ) {
axes |= ( 1 << ( ( i * 2 ) + 1 ) );
}
}
}
}
/* Time to update axes state based on old vs. new. */
if (axes != stick_state.oldaxes)
{
for( i = 0; i < 16; i++ ) {
if( ( axes & ( 1 << i ) ) && !( stick_state.oldaxes & ( 1 << i ) ) ) {
Sys_QueEvent( 0, SE_KEY, joy_keys[i], qtrue, 0, NULL );
}
/* Time to update axes state based on old vs. new. */
for( i = 0; i < 16; i++ ) {
if( ( axes & ( 1 << i ) ) && !( old_axes & ( 1 << i ) ) ) {
Sys_QueEvent( 0, SE_KEY, joy_keys[i], qtrue, 0, NULL );
if( !( axes & ( 1 << i ) ) && ( stick_state.oldaxes & ( 1 << i ) ) ) {
Sys_QueEvent( 0, SE_KEY, joy_keys[i], qfalse, 0, NULL );
}
}
}
if( !( axes & ( 1 << i ) ) && ( old_axes & ( 1 << i ) ) ) {
Sys_QueEvent( 0, SE_KEY, joy_keys[i], qfalse, 0, NULL );
}
}
/* Save for future generations. */
old_axes = axes;
#endif
/* Save for future generations. */
stick_state.oldaxes = axes;
}
#endif // USE_SDL