physics.h

/*
 * See Licensing and Copyright notice in naev.h
 */
#pragma once
 
#include "vec2.h"
 
/*
 * Update options.
 */
#define SOLID_UPDATE_RK4      0 
#define SOLID_UPDATE_EULER    1 
typedef struct Solid_ {
   double mass; 
   double dir; 
   double dir_vel; 
   vec2 vel; 
   vec2 pos; 
   double thrust; 
   double speed_max; 
   void (*update)( struct Solid_*, double ); 
} Solid;
 
/*
 * solid manipulation
 */
double solid_maxspeed( const Solid *s, double speed, double thrust );
void solid_init( Solid* dest, double mass, double dir,
      const vec2* pos, const vec2* vel, int update );
Solid* solid_create( double mass, double dir,
      const vec2* pos, const vec2* vel, int update );
void solid_free( Solid* src );
 
/*
 * misc
 */
double angle_diff( double ref, double a );