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/*
Official ShipWars Reality Constants
Notation legend:
ms = milliseconds
us = microseconds
rl = real life
ru = XSW real units
su = screen units
Unit conversion legend:
1 XSW second = 1 real life second
1 screen unit = 1 pixel (at 1:1 zoom)
1 screen unit = 0.001 XSW real units
1 screen unit = 8 meters
1 XSW real unit = 1000 screen units
1 XSW real unit = 8000 meters
1 meter = 0.125 screen units
1 meter = 0.000125 XSW real units
*/
#ifndef REALITY_H
#define REALITY_H
/*
* Cyclic Time Lapse:
*
* The main loop should usleep() for CYCLIC_MICROTIME_LAPSE
* microseconds. All speed calculations are pre these numbers.
*
* In addition, catchup time for speed should be multiplied by the
* differance of this value. Example:
* Suppose you calculated x to be 50 (meters per second).
* Then you multiply x with ( last_millitime / CYCLIC_MILLITIME_LAPSE )
* to correct x for any time lost in the previous loop.
* last_millitime in this example would be the millitime of the last
* loop.
*/
#define CYCLE_LAPSE_MS 16
#define CYCLE_LAPSE_US 16000
/*
* Sector sizes:
*
* In XSW real units. Total length of one sector is 163840.
*/
#define SECTOR_SIZE_X_MIN -1024
#define SECTOR_SIZE_X_MAX 1024
#define SECTOR_SIZE_Y_MIN -1024
#define SECTOR_SIZE_Y_MAX 1024
#define SECTOR_SIZE_Z_MIN -1024
#define SECTOR_SIZE_Z_MAX 1024
/*
* Drag Coefficents:
*/
#define SUBLIGHT_DRAG_COEF 0.0
#define WARP_DRAG_COEF 0.009
#define TRANSWARP_DRAG_COEF 0.03
/*
* Velocity thresholds:
*/
#define WARP_THRESHOLD 0.04
#define TRANSWARP_THRESHOLD 0.3
/*
* Frequency ranges (in kHz):
*
* (Note: Frequency compare resolution is 2 decimal places).
*/
#define SWR_FREQ_MIN 1.00
#define SWR_FREQ_MAX 900.00
/*
* Short-range (non subspace) communications range:
*
* Radius range for sending regular communication messages and
* hails. Units are in XSW Real units.
*/
#define COM_SHORT_RANGE_MAX 100
/*
* Shield phaze visibility interval:
*
* In milliseconds.
*/
#define SHIELD_VISIBILITY_INTERVAL 3000
/*
* Visibility in a nebula:
*/
#define VISIBILITY_NEBULA 0.15
/*
* Maximum switchable throttle power:
*
* Cannot switch throttle to reverse if throttle setting is
* greater than this value.
*/
#define THROTTLE_MAX_SWITCH 0.3
/*
* PI Constants:
*/
#ifndef PI
#define PI 3.141592654
#endif
#ifndef TWOPI
#define TWOPI 6.283185307
#endif
#ifndef HALFPI
#define HALFPI 1.570796327
#endif
/*
* Unit conversion defaults:
*
* Must be greater than 0!
*
* 1 AU = 149,600,000 km
*/
#define DEF_UNITCONV_RU_TO_AU 0.1
/*
* Unit conversions:
*/
typedef struct {
double ru_to_au; /* SW Real units to Astronomical units. */
} sw_units_struct;
sw_units_struct sw_units;
#endif /* REALITY_H */
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