public static double GetRayIntersectDistance(double maxValue, Vector3d direction, Vector3d startPosition)
{
Ray ray = new Ray(startPosition, direction);
double distance = 0.0;
BlockIndex index;
double? intersect;
while (distance <= maxValue)
{
index = new BlockIndex(direction * distance + startPosition);
intersect = index.GetBoundingBox().Intersects(ray);
if (intersect.HasValue && ChunkManager.GetBlock(index).Solidity)
{
return intersect.Value;
}
intersect = (index + BlockIndex.UnitX).GetBoundingBox().Intersects(ray);
if (intersect.HasValue && ChunkManager.GetBlock(index + BlockIndex.UnitX).Solidity)
{
return intersect.Value;
}
intersect = (index - BlockIndex.UnitX).GetBoundingBox().Intersects(ray);
if (intersect.HasValue && ChunkManager.GetBlock(index - BlockIndex.UnitX).Solidity)
{
return intersect.Value;
}
intersect = (index + BlockIndex.UnitY).GetBoundingBox().Intersects(ray);
if (intersect.HasValue && ChunkManager.GetBlock(index + BlockIndex.UnitY).Solidity)
{
return intersect.Value;
}
intersect = (index - BlockIndex.UnitY).GetBoundingBox().Intersects(ray);
if (intersect.HasValue && ChunkManager.GetBlock(index - BlockIndex.UnitY).Solidity)
{
return intersect.Value;
}
intersect = (index + BlockIndex.UnitZ).GetBoundingBox().Intersects(ray);
if (intersect.HasValue && ChunkManager.GetBlock(index + BlockIndex.UnitZ).Solidity)
{
return intersect.Value;
}
intersect = (index - BlockIndex.UnitZ).GetBoundingBox().Intersects(ray);
if (intersect.HasValue && ChunkManager.GetBlock(index - BlockIndex.UnitZ).Solidity)
{
return intersect.Value;
}
distance += 0.5F;
}
return maxValue;
}
private static BlockIndex GetCursorIntersect(double maxReach, Vector3d direction, Vector3d startPosition, out Vector3d intersectionPoint)
{
Ray ray = new Ray(startPosition, direction);
double distance = 0.0;
BlockIndex index;
double? intersect;
while (distance <= Constants.Player.BlockEditing.Reach)
{
index = new BlockIndex(direction * distance + startPosition);
intersect = index.GetBoundingBox().Intersects(ray);
if (intersect.HasValue && ChunkManager.GetBlock(index).Solidity)
{
intersectionPoint = intersect.Value * direction + startPosition;
return index;
}
intersect = (index + BlockIndex.UnitX).GetBoundingBox().Intersects(ray);
if (intersect.HasValue && ChunkManager.GetBlock(index + BlockIndex.UnitX).Solidity)
{
intersectionPoint = intersect.Value * direction + startPosition;
return index + BlockIndex.UnitX;
}
intersect = (index - BlockIndex.UnitX).GetBoundingBox().Intersects(ray);
if (intersect.HasValue && ChunkManager.GetBlock(index - BlockIndex.UnitX).Solidity)
{
intersectionPoint = intersect.Value * direction + startPosition;
return index - BlockIndex.UnitX;
}
intersect = (index + BlockIndex.UnitY).GetBoundingBox().Intersects(ray);
if (intersect.HasValue && ChunkManager.GetBlock(index + BlockIndex.UnitY).Solidity)
{
intersectionPoint = intersect.Value * direction + startPosition;
return index + BlockIndex.UnitY;
}
intersect = (index - BlockIndex.UnitY).GetBoundingBox().Intersects(ray);
if (intersect.HasValue && ChunkManager.GetBlock(index - BlockIndex.UnitY).Solidity)
{
intersectionPoint = intersect.Value * direction + startPosition;
return index - BlockIndex.UnitY;
}
intersect = (index + BlockIndex.UnitZ).GetBoundingBox().Intersects(ray);
if (intersect.HasValue && ChunkManager.GetBlock(index + BlockIndex.UnitZ).Solidity)
{
intersectionPoint = intersect.Value * direction + startPosition;
return index + BlockIndex.UnitZ;
}
intersect = (index - BlockIndex.UnitZ).GetBoundingBox().Intersects(ray);
if (intersect.HasValue && ChunkManager.GetBlock(index - BlockIndex.UnitZ).Solidity)
{
intersectionPoint = intersect.Value * direction + startPosition;
return index - BlockIndex.UnitZ;
}
distance += 0.5F;
}
intersectionPoint = Vector3d.Zero;
return null;
}
public double? Intersects(Ray ray)
{
return ray.Intersects(this);
}