1 // net_fdm.hxx -- defines a common net I/O interface to the flight
4 // Written by Curtis Olson - http://www.flightgear.org/~curt
5 // Started September 2001.
7 // This file is in the Public Domain, and comes with no warranty.
16 #include <time.h> // time_t
18 // NOTE: this file defines an external interface structure. Due to
19 // variability between platforms and architectures, we only used fixed
20 // length types here. Specifically, integer types can vary in length.
21 // I am not aware of any platforms that don't use 4 bytes for float
22 // and 8 bytes for double.
26 #elif defined( _MSC_VER ) || defined(__MINGW32__)
27 typedef signed char int8_t;
28 typedef signed short int16_t;
29 typedef signed int int32_t;
30 typedef signed __int64 int64_t;
31 typedef unsigned char uint8_t;
32 typedef unsigned short uint16_t;
33 typedef unsigned int uint32_t;
34 typedef unsigned __int64 uint64_t;
36 # error "Port me! Platforms that don't have <stdint.h> need to define int8_t, et. al."
39 const uint32_t FG_NET_FDM_VERSION = 22;
42 // Define a structure containing the top level flight dynamics model
55 uint32_t version; // increment when data values change
58 double longitude; // geodetic (radians)
59 double latitude; // geodetic (radians)
60 double altitude; // above sea level (meters)
61 float agl; // above ground level (meters)
62 float phi; // roll (radians)
63 float theta; // pitch (radians)
64 float psi; // yaw or true heading (radians)
65 float alpha; // angle of attack (radians)
66 float beta; // side slip angle (radians)
69 float phidot; // roll rate (radians/sec)
70 float thetadot; // pitch rate (radians/sec)
71 float psidot; // yaw rate (radians/sec)
72 float vcas; // calibrated airspeed
73 float climb_rate; // feet per second
74 float v_north; // north velocity in local/body frame, fps
75 float v_east; // east velocity in local/body frame, fps
76 float v_down; // down/vertical velocity in local/body frame, fps
77 float v_wind_body_north; // north velocity in local/body frame
78 // relative to local airmass, fps
79 float v_wind_body_east; // east velocity in local/body frame
80 // relative to local airmass, fps
81 float v_wind_body_down; // down/vertical velocity in local/body
82 // frame relative to local airmass, fps
85 float A_X_pilot; // X accel in body frame ft/sec^2
86 float A_Y_pilot; // Y accel in body frame ft/sec^2
87 float A_Z_pilot; // Z accel in body frame ft/sec^2
90 float stall_warning; // 0.0 - 1.0 indicating the amount of stall
91 float slip_deg; // slip ball deflection
96 uint32_t num_engines; // Number of valid engines
97 uint32_t eng_state[FG_MAX_ENGINES];// Engine state (off, cranking, running)
98 float rpm[FG_MAX_ENGINES]; // Engine RPM rev/min
99 float fuel_flow[FG_MAX_ENGINES]; // Fuel flow gallons/hr
100 float egt[FG_MAX_ENGINES]; // Exhuast gas temp deg F
101 float cht[FG_MAX_ENGINES]; // Cylinder head temp deg F
102 float mp_osi[FG_MAX_ENGINES]; // Manifold pressure
103 float tit[FG_MAX_ENGINES]; // Turbine Inlet Temperature
104 float oil_temp[FG_MAX_ENGINES]; // Oil temp deg F
105 float oil_px[FG_MAX_ENGINES]; // Oil pressure psi
108 uint32_t num_tanks; // Max number of fuel tanks
109 float fuel_quantity[FG_MAX_TANKS];
113 uint32_t wow[FG_MAX_WHEELS];
114 float gear_pos[FG_MAX_WHEELS];
115 float gear_steer[FG_MAX_WHEELS];
116 float gear_compression[FG_MAX_WHEELS];
119 uint32_t cur_time; // current unix time
120 // FIXME: make this uint64_t before 2038
121 int32_t warp; // offset in seconds to unix time
122 float visibility; // visibility in meters (for env. effects)
124 // Control surface positions (normalized values)
126 float elevator_trim_tab;
138 #endif // _NET_FDM_HXX