public static bool CalculateAtmoTravelPath(ImprovedSpawnGroup spawnGroup, Vector3D startCoords, MyPlanet planet, out Vector3D startPathCoords, out Vector3D endPathCoords, out MatrixD startMatrix)
{
startPathCoords = Vector3D.Zero;
endPathCoords = Vector3D.Zero;
startMatrix = MatrixD.CreateWorld(Vector3D.Zero, Vector3D.Forward, Vector3D.Up);
SpawnResources.RefreshEntityLists();
if (planet == null)
{
return(false);
}
var planetEntity = planet as IMyEntity;
for (int i = 0; i < Settings.PlanetaryCargoShips.MaxSpawnAttempts; i++)
{
//Get Starting Point
var randDirFromPlayer = SpawnResources.GetRandomCompassDirection(startCoords, planet);
var pathDist = SpawnResources.GetRandomPathDist(Settings.PlanetaryCargoShips.MinPathDistanceFromPlayer, Settings.PlanetaryCargoShips.MaxPathDistanceFromPlayer);
var midPointSurface = SpawnResources.GetNearestSurfacePoint(randDirFromPlayer * pathDist + startCoords, planet);
var upDir = Vector3D.Normalize(midPointSurface - planetEntity.GetPosition());
var altitudeFromMid = SpawnResources.GetRandomPathDist(Settings.PlanetaryCargoShips.MinSpawningAltitude, Settings.PlanetaryCargoShips.MaxSpawningAltitude);
var tempStartPath = upDir * altitudeFromMid + midPointSurface;
if (spawnGroup.PlanetRequiresAtmo == true && planet.GetAirDensity(tempStartPath) < Settings.PlanetaryCargoShips.MinAirDensity)
{
tempStartPath = upDir * Settings.PlanetaryCargoShips.MinSpawningAltitude + midPointSurface;
if (spawnGroup.PlanetRequiresAtmo == true && planet.GetAirDensity(tempStartPath) < Settings.PlanetaryCargoShips.MinAirDensity)
{
continue;
}
}
if (SpawnResources.IsPositionNearEntities(tempStartPath, Settings.PlanetaryCargoShips.MinSpawnFromGrids) == true)
{
continue;
}
var startCoordsDistFromCenter = Vector3D.Distance(planetEntity.GetPosition(), tempStartPath);
//Get Ending Point
var randPathDir = SpawnResources.GetRandomCompassDirection(tempStartPath, planet);
var randPathDist = SpawnResources.GetRandomPathDist(Settings.PlanetaryCargoShips.MinPathDistance, Settings.PlanetaryCargoShips.MaxPathDistance);
var endPathA = randPathDir * randPathDist + tempStartPath;
var endPathB = -randPathDir * randPathDist + tempStartPath;
var tempEndPath = Vector3D.Zero;
if (Vector3D.Distance(endPathA, startCoords) < Vector3D.Distance(endPathB, startCoords))
{
tempEndPath = endPathA;
}
else
{
tempEndPath = endPathB;
randPathDir *= -1;
}
//TODO: Set At Same Height From Sealevel As Start
var endUpDir = Vector3D.Normalize(tempEndPath - planetEntity.GetPosition());
tempEndPath = endUpDir * startCoordsDistFromCenter + planetEntity.GetPosition();
//Check Path
var tempMatrix = MatrixD.CreateWorld(tempStartPath, randPathDir, upDir);
var truePathDir = Vector3D.Normalize(tempEndPath - tempStartPath);
bool badPath = false;
foreach (var prefab in spawnGroup.SpawnGroup.Prefabs)
{
var modifiedStart = Vector3D.Transform((Vector3D)prefab.Position, tempMatrix);
double totalSteps = 0;
while (totalSteps < randPathDist)
{
var testPath = totalSteps * truePathDir + modifiedStart;
if (SpawnResources.IsPositionInSafeZone(testPath) == true)
{
badPath = true;
break;
}
if (SpawnResources.GetDistanceFromSurface(testPath, planet) < Settings.PlanetaryCargoShips.MinPathAltitude)
{
badPath = true;
break;
}
totalSteps += Settings.PlanetaryCargoShips.PathStepCheckDistance;
}
if (badPath == true)
{
break;
}
}
if (badPath == true)
{
continue;
}
startPathCoords = tempStartPath;
endPathCoords = tempEndPath;
startMatrix = tempMatrix;
return(true);
}
return(false);
}