public Vec3d Set(Vec3i pos)
{
this.X = pos.X;
this.Y = pos.Y;
this.Z = pos.Z;
return(this);
}
private BlockFacing(string code, byte flag, int index, int oppositeIndex, int horizontalAngleIndex, Vec3i facingVector, Vec3f planeCenter, EnumAxis axis, Cuboidf plane)
{
this.index = index;
this.meshDataIndex = (byte)(index + 1);
this.horizontalAngleIndex = horizontalAngleIndex;
this.flag = flag;
this.code = code;
this.oppositeIndex = oppositeIndex;
this.normali = facingVector;
this.normalf = new Vec3f(facingVector.X, facingVector.Y, facingVector.Z);
this.normald = new Vec3d((double)facingVector.X, (double)facingVector.Y, (double)facingVector.Z);
this.plane = plane;
normalPacked = NormalUtil.PackNormal(normalf.X, normalf.Y, normalf.Z);
normalb = (byte)(
(axis == EnumAxis.Z ? 1 : 0) << 0
| (facingVector.Z < 0 ? 1 : 0) << 1
| (axis == EnumAxis.Y ? 1 : 0) << 2
| (facingVector.Y < 0 ? 1 : 0) << 3
| (axis == EnumAxis.X ? 1 : 0) << 4
| (facingVector.X < 0 ? 1 : 0) << 5
);
normalPackedFlags = VertexFlags.PackNormal(normalf);
this.planeCenter = planeCenter;
this.axis = axis;
}
private BlockFacing GetExitingFullBlockFace(BlockPos pos, ref Vec3d exitPos)
{
for (int i = 0; i < BlockFacing.NumberOfFaces; i++)
{
BlockFacing blockSideFacing = BlockFacing.ALLFACES[i];
Vec3i planeNormal = blockSideFacing.Normali;
double demon = planeNormal.X * ray.dir.X + planeNormal.Y * ray.dir.Y + planeNormal.Z * ray.dir.Z;
if (demon > 0.00001)
{
Vec3d planePosition = pos.ToVec3d().Add(blockSideFacing.PlaneCenter);
Vec3d pt = Vec3d.Sub(planePosition, ray.origin);
double t = (pt.X * planeNormal.X + pt.Y * planeNormal.Y + pt.Z * planeNormal.Z) / demon;
if (t >= 0)
{
Vec3d pHit = new Vec3d(ray.origin.X + ray.dir.X * t, ray.origin.Y + ray.dir.Y * t, ray.origin.Z + ray.dir.Z * t);
exitPos = Vec3d.Sub(pHit, planePosition);
if (Math.Abs(exitPos.X) <= 0.5 && Math.Abs(exitPos.Y) <= 0.5 && Math.Abs(exitPos.Z) <= 0.5)
{
return(blockSideFacing);
}
}
}
}
return(null);
}
public static Vec3i[] GenCubicShellVectors(int r)
{
int[] ab = new int[2];
Vec3i[] vectors = new Vec3i[(2 * r + 1) * (2 * r + 1) * 6];
int j = 0;
foreach (BlockFacing facing in BlockFacing.ALLFACES)
{
for (ab[0] = -r; ab[0] <= r; ab[0]++)
{
for (ab[1] = -r; ab[1] <= r; ab[1]++)
{
Vec3i pos = new Vec3i(facing.Normali.X * r, facing.Normali.Y * r, facing.Normali.Z * r);
int l = 0;
if (pos.X == 0)
{
pos.X = ab[l++];
}
if (pos.Y == 0)
{
pos.Y = ab[l++];
}
if (l < 2 && pos.Z == 0)
{
pos.Z = ab[l++];
}
vectors[j++] = pos;
}
}
}
return(vectors);
}
public BlockPos Set(Vec3i pos)
{
X = pos.X;
Y = pos.Y;
Z = pos.Z;
return(this);
}
public static Cardinal FromNormali(Vec3i normali)
{
Cardinal card;
byNormali.TryGetValue(normali, out card);
return(card);
}
/// <summary>
/// Offsets the position by given xyz vector
/// </summary>
/// <param name="vector"></param>
/// <returns></returns>
public BlockPos Add(Vec3i vector)
{
X += vector.X;
Y += vector.Y;
Z += vector.Z;
return(this);
}
public static void PosInt3d(long index, long sizex, long sizez, Vec3i ret)
{
int x = (int)(index % sizex);
int y = (int)(index / (sizex * sizez));
int z = (int)((index / sizex) % sizez);
ret.X = x;
ret.Y = y;
ret.Z = z;
}
public static void PosInt3d(int index, long sizex, long sizez, Vec3i ret)
{
long x = index % sizex;
long y = index / (sizex * sizez);
long z = (index / sizex) % sizez;
ret.X = (int)x;
ret.Y = (int)y;
ret.Z = (int)z;
}
public static BlockFacing FromNormal(Vec3i vec)
{
Cardinal c = Cardinal.FromNormali(vec);
if (c == null)
{
return(null);
}
return(FromFirstLetter(c.Initial));
}
public Cardinal(string code, string initial, Vec3i normali, int index, int oppositeIndex, bool isDiagonal)
{
this.Code = code;
this.Initial = initial;
this.Normali = normali;
this.Index = index;
this.IsDiagnoal = isDiagonal;
this.OppositeIndex = oppositeIndex;
byNormali.Add(normali, this);
byInitial.Add(initial, this);
}
public static BlockFacing FromNormal(Vec3i vec)
{
for (int i = 0; i < ALLFACES.Length; i++)
{
BlockFacing f = ALLFACES[i];
if (f.normali.Equals(vec))
{
return(f);
}
}
return(null);
}
public bool RayIntersectsWithCuboid(Cuboidd selectionBox, ref BlockFacing hitOnBlockFace, ref Vec3d hitPosition)
{
if (selectionBox == null)
{
return(false);
}
double w = selectionBox.X2 - selectionBox.X1;
double h = selectionBox.Y2 - selectionBox.Y1;
double l = selectionBox.Z2 - selectionBox.Z1;
for (int i = 0; i < BlockFacing.NumberOfFaces; i++)
{
BlockFacing blockSideFacing = BlockFacing.ALLFACES[i];
Vec3i planeNormal = blockSideFacing.Normali;
// Dot product of 2 vectors
// If they are parallel the dot product is 1
// At 90 degrees the dot product is 0
double demon = planeNormal.X * ray.dir.X + planeNormal.Y * ray.dir.Y + planeNormal.Z * ray.dir.Z;
// Does intersect this plane somewhere (only negative because we are not interested in the ray leaving a face, negative because the ray points into the cube, the plane normal points away from the cube)
if (demon < -0.00001)
{
Vec3d planeCenterPosition = blockSideFacing.PlaneCenter
.ToVec3d()
.Mul(w, h, l)
.Add(selectionBox.X1, selectionBox.Y1, selectionBox.Z1)
;
Vec3d pt = Vec3d.Sub(planeCenterPosition, ray.origin);
double t = (pt.X * planeNormal.X + pt.Y * planeNormal.Y + pt.Z * planeNormal.Z) / demon;
if (t >= 0)
{
hitPosition = new Vec3d(ray.origin.X + ray.dir.X * t, ray.origin.Y + ray.dir.Y * t, ray.origin.Z + ray.dir.Z * t);
lastExitedBlockFacePos = Vec3d.Sub(hitPosition, planeCenterPosition);
// Does intersect this plane within the block
if (Math.Abs(lastExitedBlockFacePos.X) <= w / 2 && Math.Abs(lastExitedBlockFacePos.Y) <= h / 2 && Math.Abs(lastExitedBlockFacePos.Z) <= l / 2)
{
hitOnBlockFace = blockSideFacing;
return(true);
}
}
}
}
return(false);
}
public bool RayIntersectsBlockSelectionBox(BlockPos pos, BlockFilter filter)
{
if (filter?.Invoke(pos, blockSelectionTester.GetBlock(pos)) == false)
{
return(false);
}
Cuboidf[] selectionBoxes = blockSelectionTester.GetBlockIntersectionBoxes(pos);
if (selectionBoxes == null)
{
return(false);
}
bool intersects = false;
bool wasDecor = false;
for (int i = 0; i < selectionBoxes.Length; i++)
{
tmpCuboidd.Set(selectionBoxes[i]).Translate(pos.X, pos.Y, pos.Z);
if (RayIntersectsWithCuboid(tmpCuboidd, ref hitOnBlockFaceTmp, ref hitPositionTmp))
{
bool isDecor = selectionBoxes[i] is DecorSelectionBox;
if (intersects && (!wasDecor || isDecor) && hitPosition.SquareDistanceTo(ray.origin) <= hitPositionTmp.SquareDistanceTo(ray.origin))
{
continue;
}
hitOnSelectionBox = i;
intersects = true;
wasDecor = isDecor;
hitOnBlockFace = hitOnBlockFaceTmp;
hitPosition.Set(hitPositionTmp);
}
}
if (intersects && selectionBoxes[hitOnSelectionBox] is DecorSelectionBox dsb)
{
Vec3i posAdjust = dsb.PosAdjust;
if (posAdjust != null)
{
pos.Add(posAdjust);
}
}
return(intersects);
}
public Vec3f(Vec3i vec3i)
{
this.X = vec3i.X;
this.Y = vec3i.Y;
this.Z = vec3i.Z;
}
public Cuboidi(Vec3i startPos, Vec3i endPos)
{
Set(startPos.X, startPos.Y, startPos.Z, endPos.X, endPos.Y, endPos.Z);
}
/// <summary>
/// Creates a copy of this blocks position and offsets it by given xyz
/// </summary>
/// <param name="vector"></param>
/// <returns></returns>
public BlockPos AddCopy(Vec3i vector)
{
return(new BlockPos(X + vector.X, Y + vector.Y, Z + vector.Z));
}
public BlockPos(Vec3i vec)
{
this.X = vec.X;
this.Y = vec.Y;
this.Z = vec.Z;
}
