quakeforge/libs/input/in_binding.c
Bill Currie 825d8b7a49 [input] Make a start on the new binding system
Input Mapping Tables are still at the core as they are a good concept,
however they include both axis and button mappings, and the size is not
hard-coded, but dependent on the known devices. Not much actually works
yet (nq segfaults when a key is pressed).
2021-11-03 19:02:39 +09:00

154 lines
4.1 KiB
C

/*
in_binding.c
Input binding management
Copyright (C) 2021 Bill Currie <bill@taniwha.org>
Author: Bill Currie <bill@taniwha.org>
Date: 2021/11/2
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:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include "QF/cmd.h"
#include "QF/hash.h"
#include "QF/input.h"
#include "QF/sys.h"
#include "QF/input/imt.h"
#include "QF/input/binding.h"
#include "QF/input/event.h"
#include "QF/input/imt.h"
typedef struct DARRAY_TYPE (in_devbindings_t) in_devbindingset_t;
static in_devbindingset_t devbindings = DARRAY_STATIC_INIT (8);
static void
in_binding_add_device (const IE_event_t *ie_event)
{
size_t devid = ie_event->device.devid;
if (devid >= devbindings.size) {
DARRAY_RESIZE (&devbindings, devid + 1);
memset (&devbindings.a[devid], 0, sizeof (in_devbindings_t));
}
in_devbindings_t *db = &devbindings.a[devid];
if (db->id) {
if (db->id != IN_GetDeviceId (devid)) {
Sys_Error ("in_binding_add_device: devid conflict: %zd", devid);
}
Sys_Printf ("in_binding_add_device: readd %s\n", db->id);
return;
}
db->id = IN_GetDeviceId (devid);
db->devid = devid;
IN_AxisInfo (devid, 0, &db->num_axes);
IN_ButtonInfo (devid, 0, &db->num_buttons);
db->axis_info = malloc (db->num_axes * sizeof (in_axisinfo_t)
+ db->num_buttons * sizeof (in_buttoninfo_t));
db->button_info = (in_buttoninfo_t *) &db->axis_info[db->num_axes];
IN_AxisInfo (devid, db->axis_info, &db->num_axes);
IN_ButtonInfo (devid, db->button_info, &db->num_buttons);
Sys_Printf ("in_binding_add_device: %s %d %d\n", db->id, db->num_axes,
db->num_buttons);
}
static void
in_binding_remove_device (const IE_event_t *ie_event)
{
size_t devid = ie_event->device.devid;
in_devbindings_t *db = &devbindings.a[devid];
if (devid >= devbindings.size) {
Sys_Error ("in_binding_remove_device: invalid devid: %zd", devid);
}
if (!db->id) {
return;
}
free (db->axis_info); // axis and button info in same block
memset (db, 0, sizeof (*db));
}
static void
in_binding_axis (const IE_event_t *ie_event)
{
size_t devid = ie_event->axis.devid;
int axis = ie_event->axis.axis;
int value = ie_event->axis.value;
in_devbindings_t *db = &devbindings.a[devid];
if (devid < devbindings.size && axis < db->num_axes) {
db->axis_info[axis].value = value;
if (db->axis_imt_id) {
IMT_ProcessAxis (db->axis_imt_id + axis, value);
}
}
}
static void
in_binding_button (const IE_event_t *ie_event)
{
size_t devid = ie_event->button.devid;
int button = ie_event->button.button;
int state = ie_event->button.state;
in_devbindings_t *db = &devbindings.a[devid];
if (devid < devbindings.size && button < db->num_buttons) {
db->button_info[button].state = state;
if (db->button_imt_id) {
IMT_ProcessButton (db->button_imt_id + button, state);
}
}
}
static int
in_binding_event_handler (const IE_event_t *ie_event, void *unused)
{
static void (*handlers[]) (const IE_event_t *ie_event) = {
[ie_add_device] = in_binding_add_device,
[ie_remove_device] = in_binding_remove_device,
[ie_axis] = in_binding_axis,
[ie_button] = in_binding_button,
};
if (ie_event->type < 0 || ie_event->type > ie_button
|| !handlers[ie_event->type]) {
return 0;
}
handlers[ie_event->type] (ie_event);
return 1;
}
void
IN_Binding_Init (void)
{
IE_Add_Handler (in_binding_event_handler, 0);
}