1 /**************************************************************************
2 * controls.c -- defines a standard interface to all flight sim controls
4 * Written by Curtis Olson, started May 1997.
6 * Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of the
11 * License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 * (Log is kept at end of this file)
24 **************************************************************************/
27 #include <Controls/controls.h>
28 #include <Aircraft/aircraft.h>
31 void fgControlsInit( void ) {
34 c = ¤t_aircraft.controls;
37 FG_Elev_Trim = 1.969572E-03;
41 for ( i = 0; i < FG_MAX_ENGINES; i++ ) {
48 void fgElevMove(double amt) {
50 c = ¤t_aircraft.controls;
54 if ( FG_Elevator < -1.0 ) FG_Elevator = -1.0;
55 if ( FG_Elevator > 1.0 ) FG_Elevator = 1.0;
58 void fgElevSet(double pos) {
60 c = ¤t_aircraft.controls;
64 if ( FG_Elevator < -1.0 ) FG_Elevator = -1.0;
65 if ( FG_Elevator > 1.0 ) FG_Elevator = 1.0;
68 void fgElevTrimMove(double amt) {
70 c = ¤t_aircraft.controls;
74 if ( FG_Elev_Trim < -1.0 ) FG_Elev_Trim = -1.0;
75 if ( FG_Elev_Trim > 1.0 ) FG_Elev_Trim = 1.0;
78 void fgElevTrimSet(double pos) {
80 c = ¤t_aircraft.controls;
84 if ( FG_Elev_Trim < -1.0 ) FG_Elev_Trim = -1.0;
85 if ( FG_Elev_Trim > 1.0 ) FG_Elev_Trim = 1.0;
88 void fgAileronMove(double amt) {
90 c = ¤t_aircraft.controls;
94 if ( FG_Aileron < -1.0 ) FG_Aileron = -1.0;
95 if ( FG_Aileron > 1.0 ) FG_Aileron = 1.0;
98 void fgAileronSet(double pos) {
100 c = ¤t_aircraft.controls;
104 if ( FG_Aileron < -1.0 ) FG_Aileron = -1.0;
105 if ( FG_Aileron > 1.0 ) FG_Aileron = 1.0;
108 void fgRudderMove(double amt) {
109 struct fgCONTROLS *c;
110 c = ¤t_aircraft.controls;
114 if ( FG_Rudder < -1.0 ) FG_Rudder = -1.0;
115 if ( FG_Rudder > 1.0 ) FG_Rudder = 1.0;
118 void fgRudderSet(double pos) {
119 struct fgCONTROLS *c;
120 c = ¤t_aircraft.controls;
124 if ( FG_Rudder < -1.0 ) FG_Rudder = -1.0;
125 if ( FG_Rudder > 1.0 ) FG_Rudder = 1.0;
128 void fgThrottleMove(int engine, double amt) {
130 struct fgCONTROLS *c;
131 c = ¤t_aircraft.controls;
133 if ( engine == FG_Throttle_All ) {
134 for ( i = 0; i < FG_MAX_ENGINES; i++ ) {
135 FG_Throttle[i] += amt;
136 if ( FG_Throttle[i] < 0.0 ) FG_Throttle[i] = 0.0;
137 if ( FG_Throttle[i] > 1.0 ) FG_Throttle[i] = 1.0;
140 if ( (engine >= 0) && (engine < FG_MAX_ENGINES) ) {
141 FG_Throttle[engine] += amt;
142 if ( FG_Throttle[engine] < 0.0 ) FG_Throttle[engine] = 0.0;
143 if ( FG_Throttle[engine] > 1.0 ) FG_Throttle[engine] = 1.0;
148 void fgThrottleSet(int engine, double pos) {
150 struct fgCONTROLS *c;
151 c = ¤t_aircraft.controls;
153 if ( engine == FG_Throttle_All ) {
154 for ( i = 0; i < FG_MAX_ENGINES; i++ ) {
155 FG_Throttle[i] = pos;
156 if ( FG_Throttle[i] < 0.0 ) FG_Throttle[i] = 0.0;
157 if ( FG_Throttle[i] > 1.0 ) FG_Throttle[i] = 1.0;
160 if ( (engine >= 0) && (engine < FG_MAX_ENGINES) ) {
161 FG_Throttle[engine] = pos;
162 if ( FG_Throttle[engine] < 0.0 ) FG_Throttle[engine] = 0.0;
163 if ( FG_Throttle[engine] > 1.0 ) FG_Throttle[engine] = 1.0;
170 /* Revision 1.6 1998/01/19 19:27:02 curt
171 /* Merged in make system changes from Bob Kuehne <rpk@sgi.com>
172 /* This should simplify things tremendously.
174 * Revision 1.5 1998/01/19 18:40:22 curt
175 * Tons of little changes to clean up the code and to remove fatal errors
176 * when building with the c++ compiler.
178 * Revision 1.4 1997/12/10 22:37:41 curt
179 * Prepended "fg" on the name of all global structures that didn't have it yet.
180 * i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
182 * Revision 1.3 1997/08/27 03:30:01 curt
183 * Changed naming scheme of basic shared structures.
185 * Revision 1.2 1997/06/21 17:12:48 curt
186 * Capitalized subdirectory names.
188 * Revision 1.1 1997/05/31 19:24:04 curt