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event.c
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event.c
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#include "control.h"
#include "config.h"
#include "event.h"
#include "menu.h"
#include "submenu.h"
#include "game_sel.h"
#include "focus.h"
#include "sdl_wrapper.h"
#include <SDL2/SDL.h>
#define MAX_JOYSTICKS 8
static const char *event_str[] = {
"none",
"up", "down", "left", "right",
"select", "back", "quit"
};
static const int AXIS_THRESHOLD = 8000;
static const int BALL_THRESHOLD = 10;
static const int MOUSE_THRESHOLD = 10;
static int num_joysticks = 0;
static SDL_Joystick *joysticks[MAX_JOYSTICKS];
static int event = EVENT_NONE;
static struct event events[NUM_EVENTS];
int event_init( void ) {
const struct config* config = config_get();
int i;
num_joysticks = SDL_NumJoysticks();
if( num_joysticks > MAX_JOYSTICKS )
num_joysticks = MAX_JOYSTICKS;
for( i = 0 ; i < num_joysticks ; i++ ) {
SDL_JoystickOpen( i );
}
for( i = 1 ; i < NUM_EVENTS ; i++ ) {
events[i].device_type = config->iface.controls[i].device_type;
events[i].device_id = config->iface.controls[i].device_id;
events[i].control_type = config->iface.controls[i].control_type;
events[i].control_id = config->iface.controls[i].control_id;
events[i].value = config->iface.controls[i].value;
/* printf("%s: %s%d %s%d = %d\n",
event_name(i),
device_name(events[i].device_type),
events[i].device_id,
control_name(events[i].control_type),
events[i].control_id,
events[i].value
); */
}
return 0;
}
void event_free( void ) {
int i;
for( i = 0 ; i < num_joysticks ; i++ ) {
SDL_JoystickClose( joysticks[i] );
}
}
void event_pause( void ) {
event_free();
}
int event_resume( void ) {
return event_init();
}
int event_set( int id, struct event *event ) {
if( id < 1 || id >= NUM_EVENTS ) {
fprintf( stderr, "Warning: Can't set non-existent event %d\n", id );
return -1;
}
memcpy( &events[id], event, sizeof(struct event) );
return 0;
}
struct event *event_get( int id ) {
if( id < 1 || id >= NUM_EVENTS ) {
fprintf( stderr, "Warning: Can't get non-existent event %d\n", id );
return NULL;
}
return &events[id];
}
void event_flush( void ) {
SDL_Event sdl_event;
while( SDL_PollEvent( &sdl_event ) );
}
int event_poll( void ) {
SDL_Event sdl_event;
int i;
if( SDL_PollEvent( &sdl_event ) ) {
event = EVENT_NONE;
if( sdl_event.type == SDL_QUIT ) {
event = EVENT_QUIT;
}
for( i = 1 ; i < NUM_EVENTS ; i++ ) {
if( events[i].device_type == DEV_KEYBOARD ) {
if( sdl_event.type == SDL_KEYDOWN && sdl_event.key.keysym.sym == events[i].value ) {
event = i;
}
}
else if( events[i].device_type == DEV_JOYSTICK ) {
if( sdl_event.type == SDL_JOYAXISMOTION
&& sdl_event.jaxis.which == events[i].device_id
&& events[i].control_type == CTRL_AXIS
&& sdl_event.jaxis.axis == events[i].control_id ) {
if( sdl_event.jaxis.value < -AXIS_THRESHOLD && events[i].value < 0 ) {
event = i;
}
else if ( sdl_event.jaxis.value > AXIS_THRESHOLD && events[i].value > 0 ) {
event = i;
}
}
else if ( sdl_event.type == SDL_JOYBUTTONDOWN
&& sdl_event.jbutton.which == events[i].device_id
&& events[i].control_type == CTRL_BUTTON
&& sdl_event.jbutton.button == events[i].value ) {
event = i;
}
else if ( sdl_event.type == SDL_JOYHATMOTION
&& sdl_event.jhat.which == events[i].device_id
&& events[i].control_type == CTRL_HAT
&& sdl_event.jhat.hat == events[i].control_id
&& sdl_hat_dir_value( sdl_event.jhat.value ) == events[i].value ) {
event = i;
}
else if ( sdl_event.type == SDL_JOYBALLMOTION
&& sdl_event.jball.which == events[i].device_id
&& events[i].control_type == CTRL_BALL
&& sdl_event.jball.ball == events[i].control_id ) {
if( events[i].value == DIR_DOWN && sdl_event.jball.yrel > BALL_THRESHOLD ) {
event = i;
}
else if( events[i].value == DIR_UP && sdl_event.jball.yrel < -BALL_THRESHOLD ) {
event = i;
}
else if( events[i].value == DIR_LEFT && sdl_event.jball.xrel < -BALL_THRESHOLD ) {
event = i;
}
else if( events[i].value == DIR_RIGHT && sdl_event.jball.xrel > BALL_THRESHOLD ) {
event = i;
}
}
}
else if( events[i].device_type == DEV_MOUSE ) {
if( sdl_event.type == SDL_MOUSEBUTTONDOWN
&& sdl_event.button.which == events[i].device_id
&& events[i].control_type == CTRL_BUTTON
&& sdl_event.button.button == events[i].value ) {
event = i;
}
else if ( sdl_event.type == SDL_MOUSEMOTION
&& sdl_event.motion.which == events[i].device_id
&& events[i].control_type == CTRL_AXIS ) {
if( events[i].value == DIR_DOWN && sdl_event.motion.yrel > MOUSE_THRESHOLD ) {
event = i;
}
else if( events[i].value == DIR_UP && sdl_event.motion.yrel < -MOUSE_THRESHOLD ) {
event = i;
}
else if( events[i].value == DIR_LEFT && sdl_event.motion.xrel < -MOUSE_THRESHOLD ) {
event = i;
}
else if( events[i].value == DIR_RIGHT && sdl_event.motion.xrel > MOUSE_THRESHOLD ) {
event = i;
}
}
}
}
}
return event;
}
int event_probe( int timeout, struct event *event ) {
SDL_Event sdl_event;
event->device_type = DEV_UNKNOWN;
event->device_id = 0;
event->control_type = CTRL_UNKNOWN;
event->control_id = 0;
while( timeout > 0 ) {
SDL_PollEvent( &sdl_event );
switch( sdl_event.type ) {
case SDL_KEYDOWN:
event->device_type = DEV_KEYBOARD;
event->device_id = sdl_event.key.windowID;
event->value = sdl_event.key.keysym.sym;
return 1;
case SDL_JOYAXISMOTION:
event->device_type = DEV_JOYSTICK;
event->device_id = sdl_event.jaxis.which;
event->control_type = CTRL_AXIS;
event->control_id = sdl_event.jaxis.axis;
if( sdl_event.jaxis.value > AXIS_THRESHOLD )
event->value = 1;
else if( sdl_event.jaxis.value < -AXIS_THRESHOLD )
event->value = -1;
else
return -1;
return 1;
case SDL_JOYBUTTONDOWN:
event->device_type = DEV_JOYSTICK;
event->device_id = sdl_event.jbutton.which;
event->control_type = CTRL_BUTTON;
event->value = sdl_event.jbutton.button;
return 1;
case SDL_JOYHATMOTION:
event->device_type = DEV_JOYSTICK;
event->device_id = sdl_event.jhat.which;
event->control_type = CTRL_HAT;
event->control_id = sdl_event.jhat.hat;
event->value = sdl_hat_dir_value( sdl_event.jhat.value );
return 1;
case SDL_JOYBALLMOTION:
event->device_type = DEV_JOYSTICK;
event->device_id = sdl_event.jball.which;
event->control_type = CTRL_BALL;
event->control_id = sdl_event.jball.ball;
if( sdl_event.jball.xrel > BALL_THRESHOLD )
event->value = DIR_LEFT;
else if( sdl_event.jball.xrel < -BALL_THRESHOLD )
event->value = DIR_RIGHT;
else if( sdl_event.jball.yrel > BALL_THRESHOLD )
event->value = DIR_DOWN;
else if( sdl_event.jball.yrel < -BALL_THRESHOLD )
event->value = DIR_UP;
else
return -1;
return 1;
case SDL_MOUSEBUTTONDOWN:
event->device_type = DEV_MOUSE;
event->device_id = sdl_event.button.which;
event->control_type = CTRL_BUTTON;
event->value = sdl_event.button.button;
return 1;
case SDL_MOUSEMOTION:
event->device_type = DEV_MOUSE;
event->device_id = sdl_event.motion.which;
event->control_type = CTRL_AXIS;
if( sdl_event.motion.xrel > MOUSE_THRESHOLD )
event->value = DIR_LEFT;
else if( sdl_event.motion.xrel < -MOUSE_THRESHOLD )
event->value = DIR_RIGHT;
else if( sdl_event.motion.yrel > MOUSE_THRESHOLD )
event->value = DIR_DOWN;
else if( sdl_event.motion.yrel < -MOUSE_THRESHOLD )
event->value = DIR_UP;
else
return -1;
return 1;
}
SDL_Delay( 10 );
timeout -= 10;
}
return 0;
}
int event_process( int e ) {
switch( focus_has() ) {
case FOCUS_MENU:
menu_event( e );
break;
case FOCUS_SUBMENU:
submenu_event( e );
break;
case FOCUS_GAMESEL:
game_sel_event( e );
break;
default:
fprintf( stderr, "Error: Unknown focus %d\n", focus_has() );
return -1;
break;
}
return 0;
}
int event_id( char *name ) {
int i;
if( name == NULL ) {
fprintf( stderr, "Warning: Null event name\n" );
return EVENT_NONE;
}
for( i = 0 ; i < NUM_EVENTS ; i++ ) {
if( strcasecmp( name, event_str[i] ) == 0 ) return i;
}
fprintf( stderr, "Warning: Unknown event name '%s'\n", name );
return EVENT_NONE;
}
const char *event_name( int event ) {
if( event < 0 || event > NUM_EVENTS )
return NULL;
else
return event_str[event];
}