private void InitializePath(MyEnvironmentalParticle particle)
{
var pathData = new PathData();
if (pathData.PathPoints == null)
{
pathData.PathPoints = new Vector3D[PathData.PathPointCount + 2];
}
var gravity = MyGravityProviderSystem.CalculateNaturalGravityInPoint(particle.Position);
var gravityDirection = Vector3D.Normalize(gravity);
pathData.PathPoints[1] = particle.Position - gravityDirection * MyRandom.Instance.NextFloat() * 2.5f;
// TODO general direction of movement
for (int index = 2; index < PathData.PathPointCount + 1; ++index)
{
var pathLength = 5.0f;
Vector3D randomNormal = Vector3D.Normalize(new Vector3D(MyRandom.Instance.NextFloat(), MyRandom.Instance.NextFloat(), MyRandom.Instance.NextFloat()) * 2.0f - Vector3D.One - 0.25 * gravityDirection);
pathData.PathPoints[index] = pathData.PathPoints[index - 1] + randomNormal * (MyRandom.Instance.NextFloat() + 1.0f) * pathLength - gravityDirection / (float)index * pathLength;
}
pathData.PathPoints[0] = pathData.PathPoints[1] - gravityDirection;
pathData.PathPoints[PathData.PathPointCount + 1] = pathData.PathPoints[PathData.PathPointCount] + Vector3D.Normalize(pathData.PathPoints[PathData.PathPointCount] - pathData.PathPoints[PathData.PathPointCount - 1]);
particle.UserData = pathData;
}
private Vector3D GetInterpolatedPosition(MyEnvironmentalParticle particle)
{
Vector3D newPosition = particle.Position;
Debug.Assert(particle.UserData != null);
if (particle.UserData == null)
{
return(newPosition);
}
double globalRatio = MathHelper.Clamp((double)(MySandboxGame.TotalGamePlayTimeInMilliseconds - particle.BirthTime) / (double)particle.LifeTime, 0.0, 1.0);
var pointCount = PathData.PathPointCount - 2;
int pathIndex = 1 + (int)(globalRatio * pointCount);
float localRatio = (float)(globalRatio * pointCount - Math.Truncate(globalRatio * pointCount));
PathData pathData = (particle.UserData as PathData?).Value;
newPosition = Vector3D.CatmullRom(pathData.PathPoints[pathIndex - 1], pathData.PathPoints[pathIndex], pathData.PathPoints[pathIndex + 1], pathData.PathPoints[pathIndex + 2], localRatio);
if (!newPosition.IsValid())
{
newPosition = particle.Position;
}
return(newPosition);
}
protected bool Despawn(MyEnvironmentalParticle particle)
{
if (particle == null)
{
return(false);
}
foreach (var activeParticle in m_activeParticles)
{
if (particle != activeParticle)
{
continue;
}
m_activeParticles.Remove(particle);
particle.Deactivate();
m_nonActiveParticles.Add(particle);
return(true);
}
return(false);
}
private Vector3D GetInterpolatedPosition(MyEnvironmentalParticle particle)
{
Vector3D newPosition = particle.Position;
Debug.Assert(particle.UserData != null);
if (particle.UserData == null)
return newPosition;
double globalRatio = MathHelper.Clamp((double)(MySandboxGame.TotalGamePlayTimeInMilliseconds - particle.BirthTime) / (double)particle.LifeTime, 0.0, 1.0);
var pointCount = PathData.PathPointCount - 2;
int pathIndex = 1 + (int)(globalRatio * pointCount);
float localRatio = (float)(globalRatio * pointCount - Math.Truncate(globalRatio * pointCount));
PathData pathData = (particle.UserData as PathData?).Value;
newPosition = Vector3D.CatmullRom(pathData.PathPoints[pathIndex - 1], pathData.PathPoints[pathIndex], pathData.PathPoints[pathIndex + 1], pathData.PathPoints[pathIndex + 2], localRatio);
if (!newPosition.IsValid())
newPosition = particle.Position;
return newPosition;
}
private void InitializePath(MyEnvironmentalParticle particle)
{
var pathData = new PathData();
if(pathData.PathPoints == null)
pathData.PathPoints = new Vector3D[PathData.PathPointCount+2];
var gravityDirection = Vector3D.Normalize(MyGravityProviderSystem.CalculateNaturalGravityInPoint(particle.Position));
pathData.PathPoints[1] = particle.Position - Vector3D.Normalize(MyGravityProviderSystem.CalculateNaturalGravityInPoint(particle.Position)) * MyRandom.Instance.NextFloat()*2.5f;
for (int index = 2; index < PathData.PathPointCount+1; ++index )
{
var pathLength = 5.0f;
Vector3D randomNormal = Vector3D.Normalize(new Vector3D(MyRandom.Instance.NextFloat(), MyRandom.Instance.NextFloat(), MyRandom.Instance.NextFloat()) * 2.0f - Vector3D.One);
pathData.PathPoints[index] = pathData.PathPoints[index-1] + randomNormal * (MyRandom.Instance.NextFloat() + 1.0f) * pathLength - gravityDirection / (float)index * pathLength;
}
pathData.PathPoints[0] = pathData.PathPoints[1] - gravityDirection;
pathData.PathPoints[PathData.PathPointCount + 1] = pathData.PathPoints[PathData.PathPointCount] + Vector3D.Normalize(pathData.PathPoints[PathData.PathPointCount] - pathData.PathPoints[PathData.PathPointCount - 1]);
particle.UserData = pathData; // TODO: Boxing
}
protected bool Despawn(MyEnvironmentalParticle particle)
{
if (particle == null)
return false;
foreach(var activeParticle in m_activeParticles)
{
if (particle != activeParticle)
continue;
m_activeParticles.Remove(particle);
particle.Deactivate();
m_nonActiveParticles.Add(particle);
return true;
}
return false;
}