1 // net_fdm.hxx -- defines a common net I/O interface to the flight
4 // Written by Curtis Olson, started September 2001.
6 // Copyright (C) 2001 Curtis L. Olson - curt@flightgear.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.
30 # error This library requires C++
33 #include <time.h> // time_t
35 const int FG_NET_FDM_VERSION = 6;
38 // Define a structure containing the top level flight dynamics model
45 int version; // increment when data values change
46 int pad; // keep doubles 64-bit aligned for some
47 // hardware platforms, such as the Sun
48 // SPARC, which don't like misaligned
51 static const int FG_MAX_ENGINES = 4;
52 static const int FG_MAX_WHEELS = 3;
53 static const int FG_MAX_TANKS = 2;
56 double longitude; // geodetic (radians)
57 double latitude; // geodetic (radians)
58 double altitude; // above sea level (meters)
59 double agl; // above ground level (meters)
60 double phi; // roll (radians)
61 double theta; // pitch (radians)
62 double psi; // yaw or true heading (radians)
65 double phidot; // roll rate (radians/sec)
66 double thetadot; // pitch rate (radians/sec)
67 double psidot; // yaw rate (radians/sec)
68 double vcas; // calibrated airspeed
69 double climb_rate; // feet per second
72 double A_X_pilot; // X accel in body frame ft/sec^2
73 double A_Y_pilot; // Y accel in body frame ft/sec^2
74 double A_Z_pilot; // Z accel in body frame ft/sec^2
77 int num_engines; // Number of valid engines
78 int eng_state[FG_MAX_ENGINES]; // Engine state (off, cranking, running)
79 double rpm[FG_MAX_ENGINES]; // Engine RPM rev/min
80 double fuel_flow[FG_MAX_ENGINES]; // Fuel flow gallons/hr
81 double EGT[FG_MAX_ENGINES]; // Exhuast gas temp deg F
82 double oil_temp[FG_MAX_ENGINES]; // Oil temp deg F
83 double oil_px[FG_MAX_ENGINES]; // Oil pressure psi
86 int num_tanks; // Max number of fuel tanks
87 double fuel_quantity[FG_MAX_TANKS];
91 bool wow[FG_MAX_WHEELS];
94 time_t cur_time; // current unix time
95 long int warp; // offset in seconds to unix time
96 double visibility; // visibility in meters (for env. effects)
100 #endif // _NET_FDM_HXX