static ConnectionInfo OtherComms(Vessel v, KAntennaInfo antenna, HashSet <Guid> avoid_inf_recursion)
{
// hard-coded transmission rate and cost
const double ext_rate = 0.064;
const double ext_cost = 0.1;
// if RemoteTech is present and enabled
if (RemoteTech.Enabled())
{
return(RemoteTech.Connected(v.id)
? new ConnectionInfo(LinkStatus.direct_link, ext_rate, ext_cost)
: new ConnectionInfo(LinkStatus.no_link));
}
// if CommNet is enabled
else if (Features.KCommNet)
{
return(v.connection != null && v.connection.IsConnected
? new ConnectionInfo(LinkStatus.direct_link, ext_rate * v.connection.SignalStrength, ext_cost)
: new ConnectionInfo(LinkStatus.no_link));
}
// the simple stupid signal system
else
{
return(new ConnectionInfo(LinkStatus.direct_link, ext_rate, ext_cost));
}
}
public double Indirect_Rate(double d, KAntennaInfo relay_antenna)
{
double r = 0.0;
for (int i = 0; i < type.Count; ++i)
{
if (type[i] == KAntennaType.low_gain)
{
r += Antenna.Calculate_Rate(d, dist[i], rate[i]);
}
}
double indirect_r = 0.0;
for (int i = 0; i < relay_antenna.type.Count; ++i)
{
if (relay_antenna.type[i] == KAntennaType.low_gain && relay_antenna.relay[i])
{
indirect_r += Antenna.Calculate_Rate(d, relay_antenna.dist[i], relay_antenna.rate[i]);
}
}
return(Math.Min(r, indirect_r));
}
public static ConnectionInfo Connection(Vessel v, Vector3d position, KAntennaInfo antenna, bool blackout, HashSet <Guid> avoid_inf_recursion)
{
// if signal mechanic is disabled, use RemoteTech/CommNet/S4
if (!Features.Signal)
{
return(OtherComms(v, antenna, avoid_inf_recursion));
}
// if it has no antenna
if (antenna.no_antenna)
{
return(new ConnectionInfo(LinkStatus.no_antenna));
}
// if there is a storm and the vessel is inside a magnetosphere
if (blackout)
{
return(new ConnectionInfo(LinkStatus.blackout));
}
// store raytracing data
bool visible;
// store other data
double rate;
List <ConnectionInfo> connections = new List <ConnectionInfo>();
// raytrace home body
visible = Sim.RaytraceBody(v, position, FlightGlobals.GetHomeBody(), out Vector3d dir, out double dist);
// get rate
rate = antenna.Direct_Rate(dist);
// if directly linked
if (visible && rate > 0.0)
{
ConnectionInfo conn = new ConnectionInfo(LinkStatus.direct_link, rate, antenna.direct_cost);
connections.Add(conn);
}
// for each other vessel
foreach (Vessel w in FlightGlobals.Vessels)
{
// do not test with itself
if (v == w)
{
continue;
}
// skip vessels already in this chain
if (avoid_inf_recursion.Contains(w.id))
{
continue;
}
// get vessel from the cache
// - when:
// . cache is empty (eg: new savegame loaded)
// - we avoid single-tick wrong paths arising from this situation:
// . vessel A is directly linked
// . vessel B is indirectly linked through A
// . cache is cleared (after loading a savegame)
// . cache of A is computed
// . in turn, cache of B is computed ignoring A (and stored)
// . until cache of B is re-computed, B will result incorrectly not linked
// - in this way:
// . cache of A is computed
// . in turn, cache of B is computed ignoring A (but not stored)
// . cache of B is then computed correctly
// . do not degenerate into O(N^3) by using non-optimal path
if (!Cache.HasVesselInfo(w, out Vessel_Info wi))
{
if (connections.Count > 0)
{
continue;
}
else
{
wi = new Vessel_Info(w, Lib.VesselID(w), 0);
}
}
// skip invalid vessels
if (!wi.is_valid)
{
continue;
}
// skip non-relays and non-linked relays
if (!wi.kAntenna.is_relay || !wi.connection.linked)
{
continue;
}
// raytrace the other vessel
visible = Sim.RaytraceVessel(v, w, position, Lib.VesselPosition(w), out dir, out dist);
// get rate
rate = antenna.Indirect_Rate(dist, wi.kAntenna);
// if indirectly linked
// - relays with no EC have zero relay_range
// - avoid relay loops
if (visible && rate > 0.0 && !wi.connection.path.Contains(v))
{
// create indirect link data
ConnectionInfo conn = new ConnectionInfo(wi.connection)
{
// update the link data and return it
status = LinkStatus.indirect_link,
cost = antenna.indirect_cost
};
conn.rate = Math.Min(conn.rate, rate);
conn.path.Add(w);
connections.Add(conn);
}
}
// if at least a connection has been found
if (connections.Count > 0)
{
// select the best connection
double best_rate = 0.0;
int best_index = 0;
for (int i = 0; i < connections.Count; ++i)
{
if (connections[i].rate > best_rate)
{
best_rate = connections[i].rate;
best_index = i;
}
}
// and return it
return(connections[best_index]);
}
// no link
return(new ConnectionInfo(LinkStatus.no_link));
}
// ctor
public Vessel_Info(Vessel v, uint vessel_id, UInt64 inc)
{
// NOTE: anything used here can't in turn use cache, unless you know what you are doing
// NOTE: you can't cache vessel position
// at any point in time all vessel/body positions are relative to a different frame of reference
// so comparing the current position of a vessel, with the cached one of another make no sense
// associate with an unique incremental id
this.inc = inc;
// determine if this is a valid vessel
is_vessel = Lib.IsVessel(v);
if (!is_vessel)
{
return;
}
// determine if this is a rescue mission vessel
is_rescue = Misc.IsRescueMission(v);
if (is_rescue)
{
return;
}
// dead EVA are not valid vessels
if (EVA.IsDead(v))
{
return;
}
// shortcut for common tests
is_valid = true;
// generate id once
id = vessel_id;
// calculate crew info for the vessel
crew_count = Lib.CrewCount(v);
crew_capacity = Lib.CrewCapacity(v);
// get vessel position
Vector3d position = Lib.VesselPosition(v);
// this should never happen again
if (Vector3d.Distance(position, v.mainBody.position) < 1.0)
{
throw new Exception("Shit hit the fan for vessel " + v.vesselName);
}
// determine if in sunlight, calculate sun direction and distance
sunlight = Sim.RaytraceBody(v, position, FlightGlobals.Bodies[0], out sun_dir, out sun_dist) ? 1.0 : 0.0;
// at the two highest timewarp speed, the number of sun visibility samples drop to the point that
// the quantization error first became noticeable, and then exceed 100%
// to solve this, we switch to an analytical estimation of the portion of orbit that was in sunlight
// - we check against timewarp rate, instead of index, to avoid issues during timewarp blending
if (v.mainBody.flightGlobalsIndex != 0 && TimeWarp.CurrentRate > 1000.0f)
{
sunlight = 1.0 - Sim.ShadowPeriod(v) / Sim.OrbitalPeriod(v);
}
// environment stuff
atmo_factor = Sim.AtmosphereFactor(v.mainBody, position, sun_dir);
gamma_transparency = Sim.GammaTransparency(v.mainBody, v.altitude);
underwater = Sim.Underwater(v);
breathable = Sim.Breathable(v, underwater);
landed = Lib.Landed(v);
// temperature at vessel position
temperature = Sim.Temperature(v, position, sunlight, atmo_factor, out solar_flux, out albedo_flux, out body_flux, out total_flux);
temp_diff = Sim.TempDiff(temperature, v.mainBody, landed);
// radiation
radiation = Radiation.Compute(v, position, gamma_transparency, sunlight, out blackout, out magnetosphere, out inner_belt, out outer_belt, out interstellar);
// extended atmosphere
thermosphere = Sim.InsideThermosphere(v);
exosphere = Sim.InsideExosphere(v);
// malfunction stuff
malfunction = Reliability.HasMalfunction(v);
critical = Reliability.HasCriticalFailure(v);
// signal info
if (Features.KCommNet)
{
antenna = Cache.AntennaInfo(v);
avoid_inf_recursion.Add(v.id);
}
else
{
kAntenna = new KAntennaInfo(v);
avoid_inf_recursion.Add(v.id);
}
// TODO: Need to create a Signal integrated with CommNet
connection = Signal.Connection(v, position, kAntenna, blackout, avoid_inf_recursion);
transmitting = Science.Transmitting(v, connection.linked);
relaying = Signal.Relaying(v, avoid_inf_recursion);
avoid_inf_recursion.Remove(v.id);
// habitat data
volume = Habitat.Total_Volume(v);
surface = Habitat.Total_Surface(v);
pressure = Habitat.Pressure(v);
poisoning = Habitat.Poisoning(v);
shielding = Habitat.Shielding(v);
living_space = Habitat.Living_Space(v);
comforts = new Comforts(v, landed, crew_count > 1, true); // TODO: replace 'true' for connection.linked
// data about greenhouses
greenhouses = Greenhouse.Greenhouses(v);
// other stuff
gravioli = Sim.Graviolis(v);
}