2 // options.hxx -- class to handle command line options
4 // Written by Curtis Olson, started April 1998.
6 // Copyright (C) 1998 Curtis L. Olson - curt@me.umn.edu
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)
31 # error This library requires C++
35 #define FG_OPTIONS_OK 0
36 #define FG_OPTIONS_HELP 1
37 #define FG_OPTIONS_ERROR 2
43 // The flight gear "root" directory
46 // ID of initial starting airport
50 int hud_status; // HUD on/off
51 int panel_status; // Panel on/off
54 int fog; // Fog enabled/disabled
55 double fov; // Field of View
56 int fullscreen; // Full screen mode enabled/disabled
57 int shading; // shading method, 0 = Flat, 1 = Smooth
58 int skyblend; // Blend sky to haze (using polygons) or just clear
59 int textures; // Textures enabled/disabled
60 int wireframe; // Wireframe mode enabled/disabled
63 int tile_radius; // Square radius of rendered tiles (around center
65 int tile_diameter; // Diameter of rendered tiles. for instance
66 // if tile_diameter = 3 then a 3 x 3 grid of tiles will
67 // be drawn. Increase this to see terrain that is
71 int time_offset; // Offset true time by this many seconds
76 // Parse a single option
77 int parse_option( char *arg );
79 // Parse the command line options
80 int parse_command_line( int argc, char **argv );
82 // Parse the command line options
83 int parse_config_file( char *path );
85 // Print usage message
94 extern fgOPTIONS current_options;
97 #endif /* _OPTIONS_HXX */
101 // Revision 1.9 1998/06/27 16:54:34 curt
102 // Replaced "extern displayInstruments" with a entry in fgOPTIONS.
103 // Don't change the view port when displaying the panel.
105 // Revision 1.8 1998/05/16 13:08:36 curt
106 // C++ - ified views.[ch]xx
107 // Shuffled some additional view parameters into the fgVIEW class.
108 // Changed tile-radius to tile-diameter because it is a much better
110 // Added a WORLD_TO_EYE transformation to views.cxx. This allows us
111 // to transform world space to eye space for view frustum culling.
113 // Revision 1.7 1998/05/13 18:29:59 curt
114 // Added a keyboard binding to dynamically adjust field of view.
115 // Added a command line option to specify fov.
116 // Adjusted terrain color.
117 // Root path info moved to fgOPTIONS.
118 // Added ability to parse options out of a config file.
120 // Revision 1.6 1998/05/06 03:16:26 curt
121 // Added an averaged global frame rate counter.
122 // Added an option to control tile radius.
124 // Revision 1.5 1998/05/03 00:47:32 curt
125 // Added an option to enable/disable full-screen mode.
127 // Revision 1.4 1998/04/30 12:34:19 curt
128 // Added command line rendering options:
129 // enable/disable fog/haze
130 // specify smooth/flat shading
131 // disable sky blending and just use a solid color
132 // enable wireframe drawing mode
134 // Revision 1.3 1998/04/28 01:20:23 curt
135 // Type-ified fgTIME and fgVIEW.
136 // Added a command line option to disable textures.
138 // Revision 1.2 1998/04/25 15:11:13 curt
139 // Added an command line option to set starting position based on airport ID.
141 // Revision 1.1 1998/04/24 00:49:21 curt
142 // Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
143 // Trying out some different option parsing code.
144 // Some code reorganization.