#ifndef _NET_GUI_HXX
#define _NET_GUI_HXX
+#include <simgear/misc/stdint.hxx>
-#ifndef __cplusplus
-# error This library requires C++
-#endif
+// NOTE: this file defines an external interface structure. Due to
+// variability between platforms and architectures, we only used fixed
+// length types here. Specifically, integer types can vary in length.
+// I am not aware of any platforms that don't use 4 bytes for float
+// and 8 bytes for double.
-const int FG_NET_GUI_VERSION = 5;
+const uint32_t FG_NET_GUI_VERSION = 7;
// Define a structure containing the top level flight dynamics model
FG_MAX_TANKS = 4
};
- int version; // increment when data values change
- int pad; // keep doubles 64-bit aligned for some
- // hardware platforms, such as the Sun
- // SPARC, which don't like misaligned
- // data
+ uint32_t version; // increment when data values change
// Positions
double longitude; // geodetic (radians)
float climb_rate; // feet per second
// Consumables
- int num_tanks; // Max number of fuel tanks
+ uint32_t num_tanks; // Max number of fuel tanks
float fuel_quantity[FG_MAX_TANKS];
// Environment
- time_t cur_time; // current unix time
- long int warp; // offset in seconds to unix time
+ uint32_t cur_time; // current unix time
+ // FIXME: make this uint64_t before 2038
+ uint32_t warp; // offset in seconds to unix time
float ground_elev; // ground elev (meters)
// Approach
float tuned_freq; // currently tuned frequency
float nav_radial; // target nav radial
- int in_range; // tuned navaid is in range?
+ uint32_t in_range; // tuned navaid is in range?
float dist_nm; // distance to tuned navaid in nautical miles
float course_deviation_deg; // degrees off target course
float gs_deviation_deg; // degrees off target glide slope