1 /*
2 Copyright (C) 1996-1997 Id Software, Inc.
3
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12
13 See the GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18
19 */
20 // in_sun.c -- SUN/X mouse input handler
21
22 #include <sys/time.h>
23 #include <sys/types.h>
24 #include <unistd.h>
25 #include <signal.h>
26 #include <stdlib.h>
27 #include <stdio.h>
28 #include <string.h>
29 #include <sys/ipc.h>
30 #include <sys/shm.h>
31 #include <X11/Xlib.h>
32 #include <X11/Xutil.h>
33 #include <X11/Xatom.h>
34 #include <X11/keysym.h>
35
36 #include "quakedef.h"
37
38
39 //
40 // typedefs and defines
41 //
42
43 #define MOUSE_SCALE 4
44
45 //
46 // externs
47 //
48
49 extern Display *x_disp;
50 extern int x_screen, x_screen_width, x_screen_height;
51 extern int x_center_height, x_center_width;
52 extern int x_std_event_mask;
53 extern Window x_win, x_root_win;
54 extern qboolean x_fullscreen;
55 extern qboolean x_focus;
56 extern int global_dx, global_dy;
57 //
58 // globals
59 //
60
61 cvar_t _windowed_mouse = {"_windowed_mouse","1", true};
62 int x_root, y_root;
63 int x_root_old, y_root_old;
64 //
65 // locals
66 //
67
68 static int x_mouse_num, x_mouse_denom, x_mouse_thresh;
69
70
71 static qboolean x_grabbed = false;
72
73 //
74 // IN_CenterMouse - center the mouse in the screen
75 //
76
IN_CenterMouse(void)77 void IN_CenterMouse( void )
78 {
79 CheckMouseState();
80
81 if (!x_grabbed)
82 return;
83
84 XSelectInput( x_disp, x_win, x_std_event_mask & ~PointerMotionMask );
85 XWarpPointer( x_disp, None, x_root_win, 0, 0, 0, 0, x_center_width,
86 x_center_height );
87 XSelectInput( x_disp, x_win, x_std_event_mask );
88 }
89
90 //
91 // Check to see if we have grabbed the mouse or not and deal with it
92 // appropriately
93 //
CheckMouseState(void)94 static void CheckMouseState(void)
95 {
96 if (x_focus && _windowed_mouse.value && !x_grabbed) {
97 x_grabbed = true;
98 printf("fooling with mouse!\n");
99 if (XGetPointerControl( x_disp, &x_mouse_num, &x_mouse_denom, &x_mouse_thresh ))
100 printf( "XGetPointerControl failed!\n" );
101 //printf( "mouse %d/%d thresh %d\n", x_mouse_num, x_mouse_denom, x_mouse_thresh );
102
103 // make input rawer
104 XAutoRepeatOff(x_disp);
105 XGrabKeyboard(x_disp, x_win, True, GrabModeAsync, GrabModeAsync, CurrentTime);
106 XGrabPointer(x_disp, x_win, True,
107 PointerMotionMask | ButtonPressMask | ButtonReleaseMask,
108 GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
109
110 // if (XChangePointerControl( x_disp, True, True, 1, MOUSE_SCALE, x_mouse_thresh ))
111 // printf( "XChangePointerControl failed!\n" );
112
113 IN_CenterMouse();
114
115 // safe initial values
116 x_root = x_root_old = vid.width >> 1;
117 y_root = y_root_old = vid.height >> 1;
118 } else if (x_grabbed && (!_windowed_mouse.value || !x_focus)) {
119 printf("fooling with mouse!\n");
120 x_grabbed = false;
121 // undo mouse warp
122 if (XChangePointerControl( x_disp, True, True, x_mouse_num, x_mouse_denom, x_mouse_thresh ))
123 printf( "XChangePointerControl failed!\n" );
124
125 XUngrabPointer( x_disp, CurrentTime );
126 XUngrabKeyboard( x_disp, CurrentTime );
127 XAutoRepeatOn( x_disp );
128 }
129 }
130
131
132 //
133 // IN_Init - setup mouse input
134 //
135
IN_Init(void)136 void IN_Init (void)
137 {
138 if (!x_disp) Sys_Error( "X display not open!\n" );
139
140 Cvar_RegisterVariable (&_windowed_mouse);
141
142 // we really really want to clean these up...
143 atexit( IN_Shutdown );
144 }
145
146 //
147 // IN_Shutdown - clean up mouse settings (must be done from signal handler too!)
148 //
149
IN_Shutdown(void)150 void IN_Shutdown (void)
151 {
152 if (!x_disp) return;
153
154 // undo mouse warp
155 if (XChangePointerControl( x_disp, True, True, x_mouse_num, x_mouse_denom, x_mouse_thresh ))
156 printf( "XChangePointerControl failed!\n" );
157
158 XUngrabPointer( x_disp, CurrentTime );
159 XUngrabKeyboard( x_disp, CurrentTime );
160 XAutoRepeatOn( x_disp );
161 }
162
163 //
164 // IN_Commands - process buttons
165 //
166
IN_Commands(void)167 void IN_Commands (void)
168 {
169 // done in X event handler
170 }
171
172 //
173 // IN_Move - process mouse moves
174 //
175
176 void
IN_Move(usercmd_t * cmd)177 IN_Move (usercmd_t *cmd)
178 {
179 static int last_dx, last_dy;
180 static long long last_movement;
181 long long now, gethrtime();
182
183 int dx, dy;
184
185 CheckMouseState();
186
187
188 if (!x_grabbed)
189 return; // no mouse movement
190
191
192 now = gethrtime();
193
194 dx = global_dx;
195 global_dx = 0;
196
197 dy = global_dy;
198 global_dy = 0;
199
200 // printf("GOT: dx %d dy %d\n", dx, dy);
201
202 dx *= sensitivity.value;
203 dy *= sensitivity.value;
204
205 //
206 // implement low pass filter to smooth motion a bit
207 //
208 if (now - last_movement > 100000000) {
209 dx = .6 * dx;
210 dy = .6 * dy;
211 }
212 last_movement = now;
213
214 dx = .6 * dx + .4 * last_dx;
215 dy = .6 * dy + .4 * last_dy;
216
217
218 last_dx = dx;
219 last_dy = dy;
220
221 if (!dx && !dy) {
222 if (in_mlook.state & 1)
223 V_StopPitchDrift ();
224 return;
225 }
226
227 // add mouse X/Y movement to cmd
228 if ((in_strafe.state & 1) || (lookstrafe.value && (in_mlook.state & 1)))
229 cmd->sidemove += m_side.value * dx;
230 else
231 cl.viewangles[YAW] -= m_yaw.value * dx;
232
233 if (in_mlook.state & 1)
234 V_StopPitchDrift ();
235
236 if ((in_mlook.state & 1) && !(in_strafe.state & 1)) {
237 cl.viewangles[PITCH] += m_pitch.value * dy;
238 if (cl.viewangles[PITCH] > 80) cl.viewangles[PITCH] = 80;
239 if (cl.viewangles[PITCH] < -70) cl.viewangles[PITCH] = -70;
240 }
241 else {
242 if ((in_strafe.state & 1) && noclip_anglehack) cmd->upmove -= m_forward.value * dy;
243 else cmd->forwardmove -= m_forward.value * dy;
244 }
245 }
246