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__) || defined(sun)
27 typedef signed short int16_t;
28 typedef signed int int32_t;
29 typedef unsigned short uint16_t;
30 typedef unsigned int uint32_t;
32 # error "Port me! Platforms that don't have <stdint.h> need to define int8_t, et. al."
35 const uint32_t FG_NET_FDM_VERSION = 22;
38 // Define a structure containing the top level flight dynamics model
51 uint32_t version; // increment when data values change
54 double longitude; // geodetic (radians)
55 double latitude; // geodetic (radians)
56 double altitude; // above sea level (meters)
57 float agl; // above ground level (meters)
58 float phi; // roll (radians)
59 float theta; // pitch (radians)
60 float psi; // yaw or true heading (radians)
61 float alpha; // angle of attack (radians)
62 float beta; // side slip angle (radians)
65 float phidot; // roll rate (radians/sec)
66 float thetadot; // pitch rate (radians/sec)
67 float psidot; // yaw rate (radians/sec)
68 float vcas; // calibrated airspeed
69 float climb_rate; // feet per second
70 float v_north; // north velocity in local/body frame, fps
71 float v_east; // east velocity in local/body frame, fps
72 float v_down; // down/vertical velocity in local/body frame, fps
73 float v_wind_body_north; // north velocity in local/body frame
74 // relative to local airmass, fps
75 float v_wind_body_east; // east velocity in local/body frame
76 // relative to local airmass, fps
77 float v_wind_body_down; // down/vertical velocity in local/body
78 // frame relative to local airmass, fps
81 float A_X_pilot; // X accel in body frame ft/sec^2
82 float A_Y_pilot; // Y accel in body frame ft/sec^2
83 float A_Z_pilot; // Z accel in body frame ft/sec^2
86 float stall_warning; // 0.0 - 1.0 indicating the amount of stall
87 float slip_deg; // slip ball deflection
92 uint32_t num_engines; // Number of valid engines
93 uint32_t eng_state[FG_MAX_ENGINES];// Engine state (off, cranking, running)
94 float rpm[FG_MAX_ENGINES]; // Engine RPM rev/min
95 float fuel_flow[FG_MAX_ENGINES]; // Fuel flow gallons/hr
96 float egt[FG_MAX_ENGINES]; // Exhuast gas temp deg F
97 float cht[FG_MAX_ENGINES]; // Cylinder head temp deg F
98 float mp_osi[FG_MAX_ENGINES]; // Manifold pressure
99 float tit[FG_MAX_ENGINES]; // Turbine Inlet Temperature
100 float oil_temp[FG_MAX_ENGINES]; // Oil temp deg F
101 float oil_px[FG_MAX_ENGINES]; // Oil pressure psi
104 uint32_t num_tanks; // Max number of fuel tanks
105 float fuel_quantity[FG_MAX_TANKS];
109 uint32_t wow[FG_MAX_WHEELS];
110 float gear_pos[FG_MAX_WHEELS];
111 float gear_steer[FG_MAX_WHEELS];
112 float gear_compression[FG_MAX_WHEELS];
115 uint32_t cur_time; // current unix time
116 // FIXME: make this uint64_t before 2038
117 int32_t warp; // offset in seconds to unix time
118 float visibility; // visibility in meters (for env. effects)
120 // Control surface positions (normalized values)
122 float elevator_trim_tab;
134 #endif // _NET_FDM_HXX