public static bool CalculateLunarTravelPath(MySpawnGroupDefinition spawnGroup, Vector3D startCoords, out Vector3D startPathCoords, out Vector3D endPathCoords)
{
startPathCoords = Vector3D.Zero;
endPathCoords = Vector3D.Zero;
SpawnResources.RefreshEntityLists();
MyPlanet planet = SpawnResources.GetNearestPlanet(startCoords);
if (planet == null)
{
return(false);
}
var planetEntity = planet as IMyEntity;
for (int i = 0; i < Settings.SpaceCargoShips.MaxSpawnAttempts; i++)
{
var spawnAltitude = (double)SpawnResources.rnd.Next((int)Settings.SpaceCargoShips.MinLunarSpawnHeight, (int)Settings.SpaceCargoShips.MaxLunarSpawnHeight);
var abovePlayer = SpawnResources.CreateDirectionAndTarget(planetEntity.GetPosition(), startCoords, startCoords, spawnAltitude);
var midpointDist = (double)SpawnResources.rnd.Next((int)Settings.SpaceCargoShips.MinPathDistanceFromPlayer, (int)Settings.SpaceCargoShips.MaxPathDistanceFromPlayer);
var pathMidpoint = SpawnResources.GetRandomCompassDirection(abovePlayer, planet) * midpointDist + abovePlayer;
var pathDist = (double)SpawnResources.rnd.Next((int)Settings.SpaceCargoShips.MinPathDistance, (int)Settings.SpaceCargoShips.MaxPathDistance);
var pathDir = SpawnResources.GetRandomCompassDirection(abovePlayer, planet);
var pathHalfDist = pathDist / 2;
var tempPathStart = pathDir * pathHalfDist + pathMidpoint;
pathDir = pathDir * -1;
var tempPathEnd = pathDir * pathHalfDist + pathMidpoint;
bool badPath = false;
IHitInfo hitInfo = null;
if (MyAPIGateway.Physics.CastLongRay(tempPathStart, tempPathEnd, out hitInfo, true) == true)
{
continue;
}
foreach (var entity in SpawnResources.EntityList)
{
if (Vector3D.Distance(tempPathStart, entity.GetPosition()) < Settings.SpaceCargoShips.MinSpawnDistFromEntities)
{
badPath = true;
break;
}
}
if (badPath == true)
{
continue;
}
var upDir = Vector3D.CalculatePerpendicularVector(pathDir);
var pathMatrix = MatrixD.CreateWorld(tempPathStart, pathDir, upDir);
foreach (var prefab in spawnGroup.Prefabs)
{
double stepDistance = 0;
var tempPrefabStart = Vector3D.Transform((Vector3D)prefab.Position, pathMatrix);
while (stepDistance < pathDist)
{
stepDistance += Settings.SpaceCargoShips.PathCheckStep;
var pathCheckCoords = pathDir * stepDistance + tempPrefabStart;
if (SpawnResources.IsPositionInSafeZone(pathCheckCoords) == true || SpawnResources.IsPositionInGravity(pathCheckCoords, planet) == true)
{
badPath = true;
break;
}
}
if (badPath == true)
{
break;
}
}
if (badPath == true)
{
continue;
}
startPathCoords = tempPathStart;
endPathCoords = tempPathEnd;
return(true);
}
return(false);
}