diff options
Diffstat (limited to 'bowshock/include/bow/lgc.h')
| -rw-r--r-- | bowshock/include/bow/lgc.h | 37 |
1 files changed, 24 insertions, 13 deletions
diff --git a/bowshock/include/bow/lgc.h b/bowshock/include/bow/lgc.h index acf796b..6cbca87 100644 --- a/bowshock/include/bow/lgc.h +++ b/bowshock/include/bow/lgc.h @@ -60,11 +60,11 @@ typedef enum { struct bow_impl_obj { bow_objtyp typ; - bow_xyz pos; - bow_xyz rot; // radians - bow_xyz posvel; - bow_xyz rotvel; - double mass; + bow_xyz pos; // astronomical units + bow_xyz rot; // radians + bow_xyz posvel; // astronomical units per second + bow_xyz rotvel; // radians per second + double mass; // kilograms union { bow_wrld wrldtyp; bow_ship shiptyp; @@ -85,15 +85,26 @@ struct bow_impl_playdat { bow_obj ship; }; -constexpr double bow_tmmod = 0x1p-14; // time modifier +constexpr double bow_distmod = 0x1.16A5D2D3p37; // distance modifier (1 au) +constexpr double bow_massmod = 0x1p0; // mass modifier +constexpr double bow_tmmod = 0x1p12; // time modifier -constexpr double bow_gravconst = 0x1.2589EFFFp-34/(bow_tmmod*bow_tmmod); // gravitational constant (s^2*m*t^2) +constexpr double bow_gravconstfac = (bow_massmod*(bow_tmmod*bow_tmmod))/((bow_distmod*bow_distmod*bow_distmod)); // inverse + +constexpr double bow_gravconst = 0x1.2589EFFFp-34*bow_gravconstfac; // gravitational constant (s^2*m*t^2) + +char const * bow_objtypstr(bow_objtyp typ); + +[[unsequenced]] double bow_shipmass(bow_ship id); + +void bow_gravsys( bow_objroot * sys); +void bow_gravobjs(bow_objroot * sys,bow_objroot * objs); +void bow_mv( bow_obj * obj); +void bow_mvobjs( bow_objroot * root); + +void bow_sim(bow_objroot * sys,zap_i04 dur); bow_obj * bow_addobj( bow_objroot * root,bow_obj const * obj); -void bow_freeobjs(bow_objroot const * root); +void bow_freeobjs(bow_objroot * root); -void bow_grav( bow_obj * obj, bow_obj * par); -void bow_gravsys( bow_objroot const * sys); -void bow_gravobjs(bow_objroot const * sys,bow_objroot const * objs); -void bow_mv( bow_obj * obj); -void bow_mvobjs( bow_objroot const * root); +void bow_gensys(bow_objroot * sys,zap_i04 id,zap_i04 tm); |