private void ChangeTexture(string texture)
{
if (selection.Is3D())
{
GD.Print("3D Selections are not implemented!");
return;
}
var(start, end, normal) = selection.GetSelectionTuple();
if (normal == Vector3.Zero)
{
return;
}
// TODO: Stuff needs to be cached here for performance and memory.
foreach (int x in Range(start.x, end.x))
{
foreach (int y in Range(start.y, end.y))
{
foreach (int z in Range(start.z, end.z))
{
VoxelPos pos = new VoxelPos(x, y, z);
Voxel voxel = level.GetVoxel(pos, false);
if (voxel.IsEmpty())
{
continue;
}
if (normal == Vector3.Up)
{
voxel.topTexture = texture;
}
else if (normal == Vector3.Down)
{
voxel.bottomTexture = texture;
}
else if (normal == Vector3.Left)
{
voxel.leftTexture = texture;
}
else if (normal == Vector3.Right)
{
voxel.rightTexture = texture;
}
else if (normal == Vector3.Forward)
{
voxel.frontTexture = texture;
}
else if (normal == Vector3.Back)
{
voxel.backTexture = texture;
}
}
}
}
level.UpdateMesh();
}
public void ResetSelection()
{
start = VoxelPos.Origin;
end = VoxelPos.Origin;
normal = Vector3.Zero;
started = false;
completed = false;
}
public void UpdateSelection(VoxelPos pos)
{
if (completed)
{
throw new InvalidOperationException("Selection has been completed.");
}
if (!started)
{
throw new InvalidOperationException("Selection has not been started.");
}
end = pos;
}
public void StartSelection(VoxelPos pos, Vector3 normal)
{
if (started)
{
throw new InvalidOperationException("Selection has already been started!");
}
this.start = pos;
this.end = pos;
this.normal = normal;
started = true;
completed = false;
}
private void CreateVoxelShape(VoxelPos from, VoxelPos to, Voxel voxel)
{
for (int x = from.x; x <= to.x; x++)
{
for (int y = from.y; y <= to.y; y++)
{
for (int z = from.z; z <= to.z; z++)
{
var pos = new VoxelPos(x, y, z);
level.SetVoxel(pos, voxel.Copy());
}
}
}
}
public override bool Equals(object obj)
{
if (obj is VoxelPos)
{
VoxelPos other = (VoxelPos)obj;
if (x == other.x && y == other.y && z == other.z)
{
return(true);
}
}
return(false);
}
public Voxel GetVoxel(VoxelPos pos, bool addToLevel)
{
if (Voxels.ContainsKey(pos))
{
return(Voxels[pos]);
}
var voxel = new Voxel();
if (addToLevel)
{
Voxels[pos] = voxel;
}
return(voxel);
}
private void Extrude(bool intrude)
{
if (selection.Is3D())
{
GD.Print("3D Selections are not implemented!");
return;
}
var(start, end, normal) = selection.GetSelectionTuple();
if (normal == Vector3.Zero)
{
return;
}
// TODO: Stuff needs to be cached here for performance and memory.
foreach (int x in Range(start.x, end.x))
{
foreach (int y in Range(start.y, end.y))
{
foreach (int z in Range(start.z, end.z))
{
VoxelPos pos = new VoxelPos(x, y, z);
Voxel voxel = level.GetVoxel(pos, false);
string texture = "";
if (voxel.IsEmpty())
{
continue;
}
if (normal == Vector3.Up)
{
texture = voxel.topTexture;
}
else if (normal == Vector3.Down)
{
texture = voxel.bottomTexture;
}
else if (normal == Vector3.Left)
{
texture = voxel.leftTexture;
}
else if (normal == Vector3.Right)
{
texture = voxel.rightTexture;
}
else if (normal == Vector3.Forward)
{
texture = voxel.frontTexture;
}
else if (normal == Vector3.Back)
{
texture = voxel.backTexture;
}
if (texture == "")
{
texture = "white";
}
if (intrude)
{
level.RemoveVoxel(pos, texture);
}
else
{
pos = pos.Translate(normal);
level.SetVoxel(pos, new Voxel(texture));
}
}
}
}
if (intrude)
{
selection.Translate(-normal);
}
else
{
selection.Translate(normal);
}
UpdateSelectionHighlight();
}
private void UpdateSelection(Vector3 start, Vector3 direction)
{
var current = start;
// Prevent infinite looping.
for (int i = 0; i < 500; i++)
{
var next = current + direction;
var pos = VoxelPos.FromVector3(next);
//GD.Print(pos);
// Move head and tail of segment to origin.
var offset = pos.ToVector3();
var head = next - offset;
var tail = current - offset;
var voxel = level.GetVoxel(pos, false);
//GD.Print(voxel);
List <Plane> faces = new List <Plane>();
if (voxel.HasTop())
{
faces.Add(TopPlane);
}
if (voxel.HasBottom())
{
faces.Add(BottomPlane);
}
if (voxel.HasLeft())
{
faces.Add(LeftPlane);
}
if (voxel.HasRight())
{
faces.Add(RightPlane);
}
if (voxel.HasFront())
{
faces.Add(FrontPlane);
}
if (voxel.HasBack())
{
faces.Add(BackPlane);
}
if (faces.Count > 0)
{
foreach (Plane face in faces)
{
//GD.Print("here!");
Vector3?intersection = face.IntersectSegment(tail, head);
// Note: Both the head and the tail are allowed to end up inside the voxel; because I can't be bothered to properly account for that edge case,
// This null check is necessary.
if (intersection != null)
{
Vector3 point = (Vector3)intersection;
var normal = face.Normal;
// Continue to the next face if the intersection is not within bounds.
if (normal.x == 0 && (point.x < 0 || point.x > 1))
{
continue;
}
if (normal.y == 0 && (point.y < 0 || point.y > 1))
{
continue;
}
if (normal.z == 0 && (point.z < 0 || point.z > 1))
{
continue;
}
// Update the selection and exit the search.
if (selection.Started())
{
selection.UpdateSelection(pos);
}
else
{
selection.StartSelection(pos, normal);
}
UpdateSelectionHighlight();
return;
}
}
}
current = next;
}
UpdateSelectionHighlight();
}
public void SetVoxel(VoxelPos pos, Voxel voxel)
{
var positions = new VoxelPos[] { pos.Forward(), pos.Backwards(), pos.Right(), pos.Left(), pos.Up(), pos.Down() }.ToList();
for (int i = 0; i < 6; i++)
{
var neighborPos = positions[i];
var neighbor = GetVoxel(neighborPos, false);
if (!neighbor.IsEmpty())
{
switch (i)
{
// Front Neighbor
case 0:
if (neighbor.HasBack())
{
neighbor.backTexture = "";
voxel.frontTexture = "";
}
break;
// Back Neighbord
case 1:
if (neighbor.HasFront())
{
neighbor.frontTexture = "";
voxel.backTexture = "";
}
break;
// Right Neighbor
case 2:
if (neighbor.HasLeft())
{
neighbor.leftTexture = "";
voxel.rightTexture = "";
}
break;
// Left Neighbor
case 3:
if (neighbor.HasRight())
{
neighbor.rightTexture = "";
voxel.leftTexture = "";
}
break;
// Up Neighbor
case 4:
if (neighbor.HasBottom())
{
neighbor.bottomTexture = "";
voxel.topTexture = "";
}
break;
// Down Neighbor
case 5:
if (neighbor.HasTop())
{
neighbor.topTexture = "";
voxel.bottomTexture = "";
}
break;
}
}
if (neighbor.IsEmpty())
{
Voxels.Remove(neighborPos);
}
}
Voxels[pos] = voxel;
updateMesh = true;
}
public void RemoveVoxel(VoxelPos pos, string texture)
{
var offsets = new Vector3[] { Vector3.Forward, Vector3.Back, Vector3.Left, Vector3.Right, Vector3.Up, Vector3.Down }.ToList();
var voxel = GetVoxel(pos, false);
for (int i = 0; i < 6; i++)
{
var neighborPos = pos.Translate(offsets[i]);
var neighbor = GetVoxel(neighborPos, true);
switch (i)
{
// Front Neighbor
case 0:
if (!voxel.HasFront())
{
neighbor.backTexture = texture;
}
break;
// Back Neighbord
case 1:
if (!voxel.HasBack())
{
neighbor.frontTexture = texture;
}
break;
// Left Neighbor
case 2:
if (!voxel.HasLeft())
{
neighbor.rightTexture = texture;
}
break;
// Right Neighbor
case 3:
if (!voxel.HasRight())
{
neighbor.leftTexture = texture;
}
break;
// Up Neighbor
case 4:
if (!voxel.HasTop())
{
neighbor.bottomTexture = texture;
}
break;
// Down Neighbor
case 5:
if (!voxel.HasBottom())
{
neighbor.topTexture = texture;
}
break;
}
}
Voxels.Remove(pos);
updateMesh = true;
}
public void Translate(Vector3 normal)
{
start = start.Translate(normal);
end = end.Translate(normal);
}