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
53 int fog; // Fog enabled/disabled
54 double fov; // Field of View
55 int fullscreen; // Full screen mode enabled/disabled
56 int shading; // shading method, 0 = Flat, 1 = Smooth
57 int skyblend; // Blend sky to haze (using polygons) or just clear
58 int textures; // Textures enabled/disabled
59 int wireframe; // Wireframe mode enabled/disabled
62 int tile_radius; // Square radius of rendered tiles (around center
64 int tile_diameter; // Diameter of rendered tiles. for instance
65 // if tile_diameter = 3 then a 3 x 3 grid of tiles will
66 // be drawn. Increase this to see terrain that is
70 int time_offset; // Offset true time by this many seconds
75 // Parse a single option
76 int parse_option( char *arg );
78 // Parse the command line options
79 int parse_command_line( int argc, char **argv );
81 // Parse the command line options
82 int parse_config_file( char *path );
84 // Print usage message
93 extern fgOPTIONS current_options;
96 #endif /* _OPTIONS_HXX */
100 // Revision 1.8 1998/05/16 13:08:36 curt
101 // C++ - ified views.[ch]xx
102 // Shuffled some additional view parameters into the fgVIEW class.
103 // Changed tile-radius to tile-diameter because it is a much better
105 // Added a WORLD_TO_EYE transformation to views.cxx. This allows us
106 // to transform world space to eye space for view frustum culling.
108 // Revision 1.7 1998/05/13 18:29:59 curt
109 // Added a keyboard binding to dynamically adjust field of view.
110 // Added a command line option to specify fov.
111 // Adjusted terrain color.
112 // Root path info moved to fgOPTIONS.
113 // Added ability to parse options out of a config file.
115 // Revision 1.6 1998/05/06 03:16:26 curt
116 // Added an averaged global frame rate counter.
117 // Added an option to control tile radius.
119 // Revision 1.5 1998/05/03 00:47:32 curt
120 // Added an option to enable/disable full-screen mode.
122 // Revision 1.4 1998/04/30 12:34:19 curt
123 // Added command line rendering options:
124 // enable/disable fog/haze
125 // specify smooth/flat shading
126 // disable sky blending and just use a solid color
127 // enable wireframe drawing mode
129 // Revision 1.3 1998/04/28 01:20:23 curt
130 // Type-ified fgTIME and fgVIEW.
131 // Added a command line option to disable textures.
133 // Revision 1.2 1998/04/25 15:11:13 curt
134 // Added an command line option to set starting position based on airport ID.
136 // Revision 1.1 1998/04/24 00:49:21 curt
137 // Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
138 // Trying out some different option parsing code.
139 // Some code reorganization.