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- /*
- ** wt -- a 3d game engine
- **
- ** Copyright (C) 1994 by Chris Laurel
- ** email: claurel@mr.net
- ** snail mail: Chris Laurel, 5700 W Lake St #208, St. Louis Park, MN 55416
- **
- ** 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 the Free Software
- ** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
- #include <X11/Xlib.h>
- #include <X11/Xutil.h>
- #include <X11/keysym.h>
-
- #include "wt.h"
- #include "error.h"
- #include "input.h"
- #include "x11graphics.h"
-
-
- static void add_special(Intent *intent, int special);
-
- static Boolean rotating_cw = False;
- static Boolean rotating_ccw = False;
- static Boolean moving_forward = False;
- static Boolean moving_backward = False;
- static Boolean running = False;
- static Boolean strafing = False;
-
-
- void init_input_devices(void)
- {
- XSelectInput(display, wtwin,
- KeyPressMask | KeyReleaseMask | ExposureMask |
- EnterWindowMask | LeaveWindowMask);
- }
-
-
- void end_input_devices(void)
- {
- }
-
-
- Intent *read_input_devices(void)
- {
- static Intent intent;
- int count;
- char buffer[20];
- KeySym key;
- XComposeStatus compose;
- XEvent event;
- int n_events;
-
-
- n_events = XEventsQueued(display, QueuedAlready);
- intent.force_x = intent.force_y = intent.force_z = 0.0;
- intent.force_rotate = 0.0;
- intent.n_special = 0;
-
- while (n_events--) {
- XNextEvent(display, &event);
-
- if (event.type == KeyPress) {
- count = XLookupString(&event.xkey, buffer, 20, &key, &compose);
-
- switch (key) {
- case XK_Left:
- rotating_ccw = True;
- break;
-
- case XK_Right:
- rotating_cw = True;
- break;
-
- case XK_Up:
- moving_forward = True;
- break;
-
- case XK_Down:
- moving_backward = True;
- break;
-
- case XK_Shift_L:
- case XK_Shift_R:
- running = True;
- break;
-
- case XK_Meta_R:
- case XK_Meta_L:
- case XK_Alt_R:
- case XK_Alt_L:
- case XK_slash:
- strafing = True;
- break;
-
- case XK_space:
- add_special(&intent, INTENT_JUMP);
- break;
-
- case XK_q:
- add_special(&intent, INTENT_END_GAME);
- break;
-
- default:
- break;
- }
-
- } else if (event.type == KeyRelease) {
-
- count = XLookupString(&event.xkey, buffer, 20, &key, &compose);
-
- switch (key) {
- case XK_Left:
- rotating_ccw = False;
- break;
-
- case XK_Right:
- rotating_cw = False;
- break;
-
- case XK_Up:
- moving_forward = False;
- break;
-
- case XK_Down:
- moving_backward = False;
- break;
-
- case XK_Shift_L:
- case XK_Shift_R:
- running = False;
- break;
-
- case XK_Meta_R:
- case XK_Meta_L:
- case XK_Alt_R:
- case XK_Alt_L:
- case XK_slash:
- strafing = False;
- break;
-
- default:
- break;
- }
-
- }
- }
-
- if (rotating_cw) {
- if (strafing)
- intent.force_y -= 0.5;
- else
- intent.force_rotate -= 0.5;
- }
- if (rotating_ccw) {
- if (strafing) {
- intent.force_y += 0.5;
- } else
- intent.force_rotate += 0.5;
- }
- if (moving_forward)
- intent.force_x += 0.5;
- if (moving_backward)
- intent.force_x -= 0.5;
- if (running) {
- intent.force_x *= 2.0;
- intent.force_y *= 2.0;
- intent.force_z *= 2.0;
- intent.force_rotate *= 2.0;
- }
-
- return &intent;
- }
-
-
- void add_special(Intent *intent, int special)
- {
- if (intent->n_special < MAX_SPECIAL_INTENTIONS) {
- intent->special[intent->n_special] = special;
- intent->n_special++;
- }
- }
-