// This sets the linedef (passive: this doesn't tell the linedef and doesn't record)
internal void SetLinedefP(Linedef ld)
{
linedef = ld;
}
// This puts a single linedef in all blocks it crosses
public virtual void AddLinedef(Linedef line)
{
int dirx, diry;
// Get coordinates
Vector2D v1 = line.Start.Position;
Vector2D v2 = line.End.Position;
// Find start and end block
Point pos = GetBlockCoordinates(v1);
Point end = GetBlockCoordinates(v2);
v1 -= rangelefttop;
v2 -= rangelefttop;
// Horizontal straight line?
if (pos.Y == end.Y)
{
// Simple loop
pos.X = CropToRangeX(pos.X);
end.X = CropToRangeX(end.X);
if (IsInRange(new Point(pos.X, pos.Y)))
{
dirx = Math.Sign(v2.x - v1.x);
if (dirx != 0)
{
for (int x = pos.X; x != end.X; x += dirx)
{
blockmap[x, pos.Y].Lines.Add(line);
}
}
blockmap[end.X, end.Y].Lines.Add(line);
}
}
// Vertical straight line?
else if (pos.X == end.X)
{
// Simple loop
pos.Y = CropToRangeY(pos.Y);
end.Y = CropToRangeY(end.Y);
if (IsInRange(new Point(pos.X, pos.Y)))
{
diry = Math.Sign(v2.y - v1.y);
if (diry != 0)
{
for (int y = pos.Y; y != end.Y; y += diry)
{
blockmap[pos.X, y].Lines.Add(line);
}
}
blockmap[end.X, end.Y].Lines.Add(line);
}
}
else
{
// Add lines to this block
if (IsInRange(pos))
{
blockmap[pos.X, pos.Y].Lines.Add(line);
}
// Moving outside the block?
if (pos != end)
{
// Calculate current block edges
float cl = pos.X * blocksize;
float cr = (pos.X + 1) * blocksize;
float ct = pos.Y * blocksize;
float cb = (pos.Y + 1) * blocksize;
// Line directions
dirx = Math.Sign(v2.x - v1.x);
diry = Math.Sign(v2.y - v1.y);
// Calculate offset and delta movement over x
float posx, deltax;
if (dirx == 0)
{
posx = float.MaxValue;
deltax = float.MaxValue;
}
else if (dirx > 0)
{
posx = (cr - v1.x) / (v2.x - v1.x);
deltax = blocksize / (v2.x - v1.x);
}
else
{
// Calculate offset and delta movement over x
posx = (v1.x - cl) / (v1.x - v2.x);
deltax = blocksize / (v1.x - v2.x);
}
// Calculate offset and delta movement over y
float posy, deltay;
if (diry == 0)
{
posy = float.MaxValue;
deltay = float.MaxValue;
}
else if (diry > 0)
{
posy = (cb - v1.y) / (v2.y - v1.y);
deltay = blocksize / (v2.y - v1.y);
}
else
{
posy = (v1.y - ct) / (v1.y - v2.y);
deltay = blocksize / (v1.y - v2.y);
}
// Continue while not reached the end
while (pos != end)
{
// Check in which direction to move
if (posx < posy)
{
// Move horizontally
posx += deltax;
if (pos.X != end.X)
{
pos.X += dirx;
}
}
else
{
// Move vertically
posy += deltay;
if (pos.Y != end.Y)
{
pos.Y += diry;
}
}
// Add lines to this block
if (IsInRange(pos))
{
blockmap[pos.X, pos.Y].Lines.Add(line);
}
}
}
}
}
//mxd
public static Geometry.Plane GetCeilingPlane(Sector s)
{
if (General.Map.UDMF)
{
// UDMF Sector slope?
if (s.CeilSlope.GetLengthSq() > 0 && !float.IsNaN(s.CeilSlopeOffset / s.CeilSlope.z))
{
return(new Geometry.Plane(s.CeilSlope, s.CeilSlopeOffset));
}
if (s.sidedefs.Count == 3)
{
Geometry.Plane ceiling = new Geometry.Plane(new Vector3D(0, 0, -1), s.CeilHeight);
Vector3D[] verts = new Vector3D[3];
bool sloped = false;
int index = 0;
// Check vertices
foreach (Sidedef sd in s.Sidedefs)
{
Vertex v = sd.IsFront ? sd.Line.End : sd.Line.Start;
//create "normal" vertices
verts[index] = new Vector3D(v.Position);
// Check floor
if (!float.IsNaN(v.ZCeiling))
{
//vertex offset is absolute
verts[index].z = v.ZCeiling;
sloped = true;
}
else
{
verts[index].z = ceiling.GetZ(v.Position);
}
index++;
}
// Have slope?
return(sloped ? new Geometry.Plane(verts[0], verts[2], verts[1], false) : ceiling);
}
}
// Have line slope?
foreach (Sidedef side in s.sidedefs)
{
// Carbon copy of EffectLineSlope class here...
if (side.Line.Action == 181 && ((side.Line.Args[1] == 1 && side == side.Line.Front) || side.Line.Args[1] == 2) && side.Other != null)
{
Linedef l = side.Line;
// Find the vertex furthest from the line
Vertex foundv = null;
float founddist = -1.0f;
foreach (Sidedef sd in s.Sidedefs)
{
Vertex v = sd.IsFront ? sd.Line.Start : sd.Line.End;
float d = l.DistanceToSq(v.Position, false);
if (d > founddist)
{
foundv = v;
founddist = d;
}
}
Vector3D v1 = new Vector3D(l.Start.Position.x, l.Start.Position.y, side.Other.Sector.CeilHeight);
Vector3D v2 = new Vector3D(l.End.Position.x, l.End.Position.y, side.Other.Sector.CeilHeight);
Vector3D v3 = new Vector3D(foundv.Position.x, foundv.Position.y, s.CeilHeight);
return(l.SideOfLine(v3) > 0.0f ? new Geometry.Plane(v1, v2, v3, false) : new Geometry.Plane(v2, v1, v3, false));
}
}
//TODO: other types of slopes...
// Normal (flat) ceiling plane
return(new Geometry.Plane(new Vector3D(0, 0, -1), s.CeilHeight));
}
// This joins the line with another line
// This line will be disposed
// Returns false when the operation could not be completed
public bool Join(Linedef other)
{
Sector l1fs, l1bs, l2fs, l2bs;
bool l1was2s, l2was2s;
// Check which lines were 2 sided
l1was2s = ((other.Front != null) && (other.Back != null));
l2was2s = ((this.Front != null) && (this.Back != null));
// Get sector references
if (other.front != null)
{
l1fs = other.front.Sector;
}
else
{
l1fs = null;
}
if (other.back != null)
{
l1bs = other.back.Sector;
}
else
{
l1bs = null;
}
if (this.front != null)
{
l2fs = this.front.Sector;
}
else
{
l2fs = null;
}
if (this.back != null)
{
l2bs = this.back.Sector;
}
else
{
l2bs = null;
}
// This line has no sidedefs?
if ((l2fs == null) && (l2bs == null))
{
// We have no sidedefs, so we have no influence
// Nothing to change on the other line
}
// Other line has no sidedefs?
else if ((l1fs == null) && (l1bs == null))
{
// The other has no sidedefs, so it has no influence
// Copy my sidedefs to the other
if (this.Start == other.Start)
{
if (!JoinChangeSidedefs(other, true, front))
{
return(false);
}
if (!JoinChangeSidedefs(other, false, back))
{
return(false);
}
}
else
{
if (!JoinChangeSidedefs(other, false, front))
{
return(false);
}
if (!JoinChangeSidedefs(other, true, back))
{
return(false);
}
}
// Copy my properties to the other
this.CopyPropertiesTo(other);
}
else
{
// Compare front sectors
if ((l1fs != null) && (l1fs == l2fs))
{
// Copy textures
if (other.front != null)
{
other.front.AddTexturesTo(this.back);
}
if (this.front != null)
{
this.front.AddTexturesTo(other.back);
}
// Change sidedefs
if (!JoinChangeSidedefs(other, true, back))
{
return(false);
}
}
// Compare back sectors
else if ((l1bs != null) && (l1bs == l2bs))
{
// Copy textures
if (other.back != null)
{
other.back.AddTexturesTo(this.front);
}
if (this.back != null)
{
this.back.AddTexturesTo(other.front);
}
// Change sidedefs
if (!JoinChangeSidedefs(other, false, front))
{
return(false);
}
}
// Compare front and back
else if ((l1fs != null) && (l1fs == l2bs))
{
// Copy textures
if (other.front != null)
{
other.front.AddTexturesTo(this.front);
}
if (this.back != null)
{
this.back.AddTexturesTo(other.back);
}
// Change sidedefs
if (!JoinChangeSidedefs(other, true, front))
{
return(false);
}
}
// Compare back and front
else if ((l1bs != null) && (l1bs == l2fs))
{
// Copy textures
if (other.back != null)
{
other.back.AddTexturesTo(this.back);
}
if (this.front != null)
{
this.front.AddTexturesTo(other.front);
}
// Change sidedefs
if (!JoinChangeSidedefs(other, false, back))
{
return(false);
}
}
else
{
// Other line single sided?
if (other.back == null)
{
// This line with its back to the other?
if (this.start == other.end)
{
// Copy textures
if (other.back != null)
{
other.back.AddTexturesTo(this.front);
}
if (this.back != null)
{
this.back.AddTexturesTo(other.front);
}
// Change sidedefs
if (!JoinChangeSidedefs(other, false, front))
{
return(false);
}
}
else
{
// Copy textures
if (other.back != null)
{
other.back.AddTexturesTo(this.back);
}
if (this.front != null)
{
this.front.AddTexturesTo(other.front);
}
// Change sidedefs
if (!JoinChangeSidedefs(other, false, back))
{
return(false);
}
}
}
// This line single sided?
else if (this.back == null)
{
// Other line with its back to this?
if (other.start == this.end)
{
// Copy textures
if (other.back != null)
{
other.back.AddTexturesTo(this.front);
}
if (this.back != null)
{
this.back.AddTexturesTo(other.front);
}
// Change sidedefs
if (!JoinChangeSidedefs(other, false, front))
{
return(false);
}
}
else
{
// Copy textures
if (other.front != null)
{
other.front.AddTexturesTo(this.front);
}
if (this.back != null)
{
this.back.AddTexturesTo(other.back);
}
// Change sidedefs
if (!JoinChangeSidedefs(other, true, front))
{
return(false);
}
}
}
else
{
// This line with its back to the other?
if (this.start == other.end)
{
// Copy textures
if (other.back != null)
{
other.back.AddTexturesTo(this.front);
}
if (this.back != null)
{
this.back.AddTexturesTo(other.front);
}
// Change sidedefs
if (!JoinChangeSidedefs(other, false, front))
{
return(false);
}
}
else
{
// Copy textures
if (other.back != null)
{
other.back.AddTexturesTo(this.back);
}
if (this.front != null)
{
this.front.AddTexturesTo(other.front);
}
// Change sidedefs
if (!JoinChangeSidedefs(other, false, back))
{
return(false);
}
}
}
}
// Apply single/double sided flags if the double-sided-ness changed
if ((!l1was2s && ((other.Front != null) && (other.Back != null))) ||
(l1was2s && ((other.Front == null) || (other.Back == null))))
{
other.ApplySidedFlags();
}
// Remove unneeded textures
if (other.front != null)
{
other.front.RemoveUnneededTextures(!(l1was2s && l2was2s));
}
if (other.back != null)
{
other.back.RemoveUnneededTextures(!(l1was2s && l2was2s));
}
}
// If either of the two lines was selected, keep the other selected
if (this.Selected)
{
other.Selected = true;
}
if (this.marked)
{
other.marked = true;
}
// I got killed by the other.
this.Dispose();
General.Map.IsChanged = true;
return(true);
}