public bool isGridBlock(VoxelHitInfo hitInfo)
{
return(hitInfo.voxelCenter.y == 0.5f);
}
/// <summary>
/// Perform ray cast against all terrain
/// </summary>
/// <param name="R">Ray in unit space</param>
/// <param name="MaxDistance"></param>
/// <param name="Hit">Information of the hit, if hit successfully</param>
/// <param name="IgnoreTransparent">Should voxels with transparent type just be ignoreed in this check</param>
/// <param name="TypeMask">Bit mask to determine what voxel types to check against</param>
/// <returns>Does the ray hit</returns>
public bool PerformRayCast(Ray R, out VoxelHitInfo Hit, float MaxDistance = 32.0f, bool IgnoreTransparent = false, int TypeMask = int.MaxValue)
{
Point lastCheck = new Point();
bool started = false;
for (float i = 0; i < MaxDistance; i += 0.5f)
{
Point check = new Point((R.origin + R.direction * i) * WorldManager.UnitToVoxelScale);
// Don't repeat checks
if (started && lastCheck == check)
{
continue;
}
// Ignore invalid height
if (check.y < 0 || check.y >= VoxelChunk.ChunkHeight)
{
// If we were in bounds exit out, as we've left
if (started)
{
break;
}
// Ignore invalid height until we get in bounds
else
{
continue;
}
}
lastCheck = check;
started = true;
VoxelInstance voxel = GetVoxel(check.x, check.y, check.z);
// Ignore invalid checks
if (voxel == null || voxel.mType == VoxelType.None || ((1 << (int)voxel.mType) & TypeMask) == 0 || (IgnoreTransparent && voxel.bIsTransparent))
{
continue;
}
// Intersect ray against bounding box and see if it hits
Bounds bounds = new Bounds(new Vector3(check.x, check.y, check.z) * WorldManager.VoxelToUnitScale, new Vector3(1, 1, 1) * WorldManager.VoxelToUnitScale);
float d;
if (bounds.IntersectRay(R, out d))
{
Vector3 c = bounds.ClosestPoint(R.origin + R.direction * (d - 0.0001f));
Vector3 normal = new Vector3(0, 0, 0);
// Work out normal based on closest point
if (c.y == bounds.min.y)
{
normal.y = -1;
}
if (c.y == bounds.max.y)
{
normal.y = 1;
}
if (c.x == bounds.min.x)
{
normal.x = -1;
}
if (c.x == bounds.max.x)
{
normal.x = 1;
}
if (c.z == bounds.min.z)
{
normal.z = -1;
}
if (c.z == bounds.max.z)
{
normal.z = 1;
}
Hit = new VoxelHitInfo(check.x, check.y, check.z, voxel, normal.normalized);
return(true);
}
}
Hit = new VoxelHitInfo();
return(false);
}
