84 lines
2.2 KiB
C++
84 lines
2.2 KiB
C++
// net_fdm_mini.hxx -- defines a simple subset I/O interface to the flight
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// dynamics model variables
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//
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// Written by Curtis Olson - http://www.flightgear.org/~curt
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// Started January 2002.
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//
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// This file is in the Public Domain, and comes with no warranty.
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//
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// $Id$
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#ifndef _NET_FDM_MINI_HXX
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#define _NET_FDM_MINI_HXX
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#ifndef __cplusplus
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# error This library requires C++
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#endif
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// NOTE: this file defines an external interface structure. Due to
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// variability between platforms and architectures, we only used fixed
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// length types here. Specifically, integer types can vary in length.
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// I am not aware of any platforms that don't use 4 bytes for float
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// and 8 bytes for double.
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#ifdef HAVE_STDINT_H
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# include <stdint.h>
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#elif defined( _MSC_VER ) || defined(__MINGW32__)
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typedef signed char int8_t;
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typedef signed short int16_t;
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typedef signed int int32_t;
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typedef signed __int64 int64_t;
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typedef unsigned char uint8_t;
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typedef unsigned short uint16_t;
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typedef unsigned int uint32_t;
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typedef unsigned __int64 uint64_t;
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#else
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# error "Port me! Platforms that don't have <stdint.h> need to define int8_t, et. al."
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#endif
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const uint32_t FG_NET_FDM_MINI_VERSION = 2;
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// Define a structure containing the top level flight dynamics model
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// parameters
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class FGNetMiniFDM {
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public:
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enum {
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FG_MAX_ENGINES = 4,
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FG_MAX_WHEELS = 3,
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FG_MAX_TANKS = 4
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};
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uint32_t version; // increment when data values change
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// Positions
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double longitude; // geodetic (radians)
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double latitude; // geodetic (radians)
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double altitude; // above sea level (meters)
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double agl; // above ground level (meters)
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double phi; // roll (radians)
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double theta; // pitch (radians)
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double psi; // yaw or true heading (radians)
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// Velocities
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double vcas;
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double climb_rate; // feet per second
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// Consumables
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uint32_t num_tanks; // Max number of fuel tanks
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double fuel_quantity[FG_MAX_TANKS];
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// Environment
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uint32_t cur_time; // current unix time
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int32_t warp; // offset in seconds to unix time
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};
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#endif // _NET_FDM_MINI_HXX
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