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UltimateZoneBuilder/Source/Core/Map/Linedef.cs

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#region ================== Copyright (c) 2007 Pascal vd Heiden
/*
* Copyright (c) 2007 Pascal vd Heiden, www.codeimp.com
* This program is released under GNU General Public License
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#endregion
#region ================== Namespaces
using System;
using System.Collections.Generic;
using CodeImp.DoomBuilder.Config;
using CodeImp.DoomBuilder.Data;
using CodeImp.DoomBuilder.Geometry;
using System.Drawing;
using CodeImp.DoomBuilder.IO;
#endregion
namespace CodeImp.DoomBuilder.Map
{
public sealed class Linedef : SelectableElement, IMultiTaggedMapElement
{
#region ================== Constants
public const double SIDE_POINT_DISTANCE = 0.01;
public const int NUM_ARGS = 5;
#endregion
#region ================== Variables
// Map
private MapSet map;
// List items
private LinkedListNode<Linedef> startvertexlistitem;
private LinkedListNode<Linedef> endvertexlistitem;
private LinkedListNode<Linedef> selecteditem;
// Vertices
private Vertex start;
private Vertex end;
// Sidedefs
private Sidedef front;
private Sidedef back;
// Cache
private bool updateneeded;
private double lengthsq;
private double lengthsqinv;
private double length;
private double lengthinv;
private double angle;
private RectangleF rect;
private bool impassableflag;
// Properties
private Dictionary<string, bool> flags;
private int action;
private int activate;
private List<int> tags; //mxd
private int[] args;
private bool frontinterior; // for drawing only
private int colorPresetIndex;//mxd
// Clone
private int serializedindex;
// Rendering
private int lastProcessed;
#endregion
#region ================== Properties
public MapSet Map { get { return map; } }
public Vertex Start { get { return start; } }
public Vertex End { get { return end; } }
public Sidedef Front { get { return front; } }
public Sidedef Back { get { return back; } }
public Line2D Line { get { return new Line2D(start.Position, end.Position); } }
internal Dictionary<string, bool> Flags { get { return flags; } }
public int Action { get { return action; } set { BeforePropsChange(); action = value; UpdateColorPreset(); } }
public int Activate { get { return activate; } set { BeforePropsChange(); activate = value; UpdateColorPreset(); } }
public int Tag { get { return tags[0]; } set { BeforePropsChange(); tags[0] = value; if((value < General.Map.FormatInterface.MinTag) || (value > General.Map.FormatInterface.MaxTag)) throw new ArgumentOutOfRangeException("Tag", "Invalid tag number"); } } //mxd
public List<int> Tags { get { return tags; } set { BeforePropsChange(); tags = value; } } //mxd
public double LengthSq { get { return lengthsq; } }
public double Length { get { return length; } }
public double LengthInv { get { return lengthinv; } }
public double Angle { get { return angle; } }
public int AngleDeg { get { return (int)(angle * Angle2D.PIDEG); } }
public RectangleF Rect { get { return rect; } }
public int[] Args { get { return args; } }
internal int SerializedIndex { get { return serializedindex; } set { serializedindex = value; } }
internal int LastProcessed { get { return lastProcessed; } set { lastProcessed = value; } }
internal bool FrontInterior { get { return frontinterior; } set { frontinterior = value; } }
internal bool ImpassableFlag { get { return impassableflag; } }
internal int ColorPresetIndex { get { return colorPresetIndex; } } //mxd
internal bool ExtraFloorFlag; //mxd
#endregion
#region ================== Constructor / Disposer
// Constructor
internal Linedef(MapSet map, int listindex, Vertex start, Vertex end)
{
// Initialize
this.elementtype = MapElementType.LINEDEF; //mxd
this.map = map;
this.listindex = listindex;
this.updateneeded = true;
this.args = new int[NUM_ARGS];
this.tags = new List<int> { 0 }; //mxd
this.flags = new Dictionary<string, bool>(StringComparer.Ordinal);
this.colorPresetIndex = -1;//mxd
// Attach to vertices
this.start = start;
this.startvertexlistitem = start.AttachLinedefP(this);
this.end = end;
this.endvertexlistitem = end.AttachLinedefP(this);
if(map == General.Map.Map)
General.Map.UndoRedo.RecAddLinedef(this);
// We have no destructor
GC.SuppressFinalize(this);
}
// Disposer
public override void Dispose()
{
// Not already disposed?
if(!isdisposed)
{
// Already set isdisposed so that changes can be prohibited
isdisposed = true;
// Dispose sidedefs
if((front != null) && map.AutoRemove) front.Dispose(); else AttachFrontP(null);
if((back != null) && map.AutoRemove) back.Dispose(); else AttachBackP(null);
if(map == General.Map.Map)
General.Map.UndoRedo.RecRemLinedef(this);
// Remove from main list
map.RemoveLinedef(listindex);
// Detach from vertices
if(startvertexlistitem != null) start.DetachLinedefP(startvertexlistitem);
startvertexlistitem = null;
start = null;
if(endvertexlistitem != null) end.DetachLinedefP(endvertexlistitem);
endvertexlistitem = null;
end = null;
// Clean up
start = null;
end = null;
front = null;
back = null;
map = null;
//mxd. Restore isdisposed so base classes can do their disposal job
isdisposed = false;
// Clean up base
base.Dispose();
}
}
#endregion
#region ================== Management
// Call this before changing properties
protected override void BeforePropsChange()
{
if(map == General.Map.Map)
General.Map.UndoRedo.RecPrpLinedef(this);
}
// Serialize / deserialize (passive: doesn't record)
new internal void ReadWrite(IReadWriteStream s)
{
if(!s.IsWriting)
{
BeforePropsChange();
updateneeded = true;
}
base.ReadWrite(s);
if(s.IsWriting)
{
s.wInt(flags.Count);
foreach(KeyValuePair<string, bool> f in flags)
{
s.wString(f.Key);
s.wBool(f.Value);
}
}
else
{
int c; s.rInt(out c);
flags = new Dictionary<string, bool>(c, StringComparer.Ordinal);
for(int i = 0; i < c; i++)
{
string t; s.rString(out t);
bool b; s.rBool(out b);
flags.Add(t, b);
}
}
s.rwInt(ref action);
s.rwInt(ref activate);
//mxd
if(s.IsWriting)
{
s.wInt(tags.Count);
foreach(int tag in tags) s.wInt(tag);
}
else
{
int c; s.rInt(out c);
tags = new List<int>(c);
for(int i = 0; i < c; i++)
{
int t; s.rInt(out t);
tags.Add(t);
}
}
for(int i = 0; i < NUM_ARGS; i++) s.rwInt(ref args[i]);
//mxd
if(!s.IsWriting) UpdateColorPreset();
}
// This sets new start vertex
public void SetStartVertex(Vertex v)
{
if(map == General.Map.Map)
General.Map.UndoRedo.RecRefLinedefStart(this);
// Change start
if(startvertexlistitem != null) start.DetachLinedefP(startvertexlistitem);
startvertexlistitem = null;
start = v;
if(start != null) startvertexlistitem = start.AttachLinedefP(this);
this.updateneeded = true;
}
// This sets new end vertex
public void SetEndVertex(Vertex v)
{
if(map == General.Map.Map)
General.Map.UndoRedo.RecRefLinedefEnd(this);
// Change end
if(endvertexlistitem != null) end.DetachLinedefP(endvertexlistitem);
endvertexlistitem = null;
end = v;
if(end != null) endvertexlistitem = end.AttachLinedefP(this);
this.updateneeded = true;
}
// This detaches a vertex
internal void DetachVertexP(Vertex v)
{
if(v == start)
{
if(startvertexlistitem != null) start.DetachLinedefP(startvertexlistitem);
startvertexlistitem = null;
start = null;
}
else if(v == end)
{
if(endvertexlistitem != null) end.DetachLinedefP(endvertexlistitem);
endvertexlistitem = null;
end = null;
}
else
throw new Exception("Specified Vertex is not attached to this Linedef.");
}
// This copies all properties to another line
public void CopyPropertiesTo(Linedef l)
{
l.BeforePropsChange();
// Copy properties
l.action = action;
l.args = (int[])args.Clone();
l.flags = new Dictionary<string, bool>(flags);
l.tags = new List<int>(tags); //mxd
l.updateneeded = true;
l.activate = activate;
l.impassableflag = impassableflag;
l.UpdateColorPreset();//mxd
base.CopyPropertiesTo(l);
}
// This attaches a sidedef on the front
internal void AttachFront(Sidedef s)
{
if(map == General.Map.Map)
General.Map.UndoRedo.RecRefLinedefFront(this);
// Attach and recalculate
AttachFrontP(s);
}
// Passive version, does not record the change
internal void AttachFrontP(Sidedef s)
{
// Attach and recalculate
front = s;
if(front != null) front.SetLinedefP(this);
updateneeded = true;
}
// This attaches a sidedef on the back
internal void AttachBack(Sidedef s)
{
if(map == General.Map.Map)
General.Map.UndoRedo.RecRefLinedefBack(this);
// Attach and recalculate
AttachBackP(s);
}
// Passive version, does not record the change
internal void AttachBackP(Sidedef s)
{
// Attach and recalculate
back = s;
if(back != null) back.SetLinedefP(this);
updateneeded = true;
}
// This detaches a sidedef from the front
internal void DetachSidedefP(Sidedef s)
{
// Sidedef is on the front?
if(front == s)
{
// Remove sidedef reference
if(front != null) front.SetLinedefP(null);
front = null;
updateneeded = true;
}
// Sidedef is on the back?
else if(back == s)
{
// Remove sidedef reference
if(back != null) back.SetLinedefP(null);
back = null;
updateneeded = true;
}
//else throw new Exception("Specified Sidedef is not attached to this Linedef.");
}
// This updates the line when changes have been made
public void UpdateCache()
{
// Update if needed
if(updateneeded)
{
// Delta vector
Vector2D delta = end.Position - start.Position;
// Recalculate values
lengthsq = delta.GetLengthSq();
length = Math.Sqrt(lengthsq);
if(length > 0.0) lengthinv = 1.0 / length; else lengthinv = 1.0 / 0.0000000001;
if(lengthsq > 0.0) lengthsqinv = 1.0 / lengthsq; else lengthsqinv = 1.0 / 0.0000000001;
angle = delta.GetAngle();
double l = Math.Min(start.Position.x, end.Position.x);
double t = Math.Min(start.Position.y, end.Position.y);
double r = Math.Max(start.Position.x, end.Position.x);
double b = Math.Max(start.Position.y, end.Position.y);
rect = new RectangleF((float)l, (float)t, (float)(r - l), (float)(b - t));
// Cached flags
impassableflag = IsFlagSet(General.Map.Config.ImpassableFlag);
//mxd. Color preset
UpdateColorPreset();
// Updated
updateneeded = false;
}
}
// This flags the line needs an update because it moved
public void NeedUpdate()
{
// Update this line
updateneeded = true;
// Update sectors as well
if(front != null) front.Sector.UpdateNeeded = true;
if(back != null) back.Sector.UpdateNeeded = true;
}
// This translates the flags and activations into UDMF fields
internal void TranslateToUDMF(Type previousmapformatinterfacetype)
{
// First make a single integer with all bits from activation and flags
int bits = activate;
int flagbit;
foreach(KeyValuePair<string, bool> f in flags)
if(int.TryParse(f.Key, out flagbit) && f.Value) bits |= flagbit;
// Now make the new flags
flags.Clear();
//mxd. Add default activation flag if needed
if(action != 0 && activate == 0 && !string.IsNullOrEmpty(General.Map.Config.DefaultLinedefActivationFlag))
flags[General.Map.Config.DefaultLinedefActivationFlag] = true;
foreach(FlagTranslation f in General.Map.Config.LinedefFlagsTranslation)
{
// Flag found in bits?
if((bits & f.Flag) == f.Flag)
{
// Add fields and remove bits
bits &= ~f.Flag;
for(int i = 0; i < f.Fields.Count; i++)
flags[f.Fields[i]] = f.FieldValues[i];
}
else
{
// Add fields with inverted value
for(int i = 0; i < f.Fields.Count; i++)
{
if(!flags.ContainsKey(f.Fields[i])) //mxd
flags[f.Fields[i]] = !f.FieldValues[i];
}
}
}
//mxd. Hexen -> UDMF action translation. Hardcoded for now...
if(previousmapformatinterfacetype == typeof(HexenMapSetIO))
{
switch(Action)
{
case 121: //Line_SetIdentification
//Convert arg0 to tag
tags[0] = args[0] + args[4] * 256;
//Convert arg1 to flags
ConvertArgToFlags(1);
//clear action and arguments
action = 0;
for(int i = 0; i < args.Length; i++) args[i] = 0;
break;
case 208: //TranslucentLine
//Convert arg0 to tag
tags[0] = args[0];
//Convert arg3 to flags
ConvertArgToFlags(3);
break;
case 1: ConvertArgToTag(3, true); break; //Polyobj_StartLine
case 5: ConvertArgToTag(4, true); break; //Polyobj_ExplicitLine
case 181: ConvertArgToTag(2, true); break; //Plane_Align
case 215: ConvertArgToTag(0, true); break; //Teleport_Line
case 222: ConvertArgToTag(0, false); break; //Scroll_Texture_Model
case 160: //Sector_3DFloor
// Convert to UDMF
if((args[1] & 8) == 8) // arg4 is LineID?
{
tags[0] = args[4];
args[1] &= ~8; // Unset flag
}
else // It's sector's HiTag then
{
args[0] += args[4] * 256;
}
// Clear arg
args[4] = 0;
break;
}
}
//mxd. Update cached flags
impassableflag = IsFlagSet(General.Map.Config.ImpassableFlag);
// Update color preset
UpdateColorPreset();
}
// This translates UDMF fields back into the normal flags and activations
internal void TranslateFromUDMF()
{
//mxd. Clear UDMF-related properties
this.Fields.Clear();
ExtraFloorFlag = false;
// Make copy of the flags
Dictionary<string, bool> oldfields = new Dictionary<string, bool>(flags);
// Make the flags
flags.Clear();
foreach(KeyValuePair<string, string> f in General.Map.Config.LinedefFlags)
{
// Flag must be numeric
int flagbit;
if(int.TryParse(f.Key, out flagbit))
{
foreach(FlagTranslation ft in General.Map.Config.LinedefFlagsTranslation)
{
if(ft.Flag == flagbit)
{
// Only set this flag when the fields match
bool fieldsmatch = true;
for(int i = 0; i < ft.Fields.Count; i++)
{
if(!oldfields.ContainsKey(ft.Fields[i]) || (oldfields[ft.Fields[i]] != ft.FieldValues[i]))
{
fieldsmatch = false;
break;
}
}
// Field match? Then add the flag.
if(fieldsmatch)
{
flags.Add(f.Key, true);
break;
}
}
}
}
}
// Make the activation
foreach(LinedefActivateInfo a in General.Map.Config.LinedefActivates)
{
bool foundactivation = false;
foreach(FlagTranslation ft in General.Map.Config.LinedefFlagsTranslation)
{
if(ft.Flag == a.Index)
{
// Only set this activation when the fields match
bool fieldsmatch = true;
for(int i = 0; i < ft.Fields.Count; i++)
{
if(!oldfields.ContainsKey(ft.Fields[i]) || (oldfields[ft.Fields[i]] != ft.FieldValues[i]))
{
fieldsmatch = false;
break;
}
}
// Field match? Then add the flag.
if(fieldsmatch)
{
activate = a.Index;
foundactivation = true;
break;
}
}
}
if(foundactivation) break;
}
//mxd. UDMF -> Hexen action translation. Hardcoded for now...
if(General.Map.FormatInterface is HexenMapSetIO)
{
switch(action)
{
case 208: //TranslucentLine
//Convert tag to arg0
if(tags[0] < General.Map.FormatInterface.MinArgument || tags[0] > General.Map.FormatInterface.MaxArgument)
{
string message = "Linedef " + Index + ": unable to convert Tag (" + tags[0] + ") to LineID because it's outside of supported argument range [" + General.Map.FormatInterface.MinArgument + ".." + General.Map.FormatInterface.MaxArgument + "].";
General.ErrorLogger.Add(new MapElementErrorItem(ErrorType.Warning, this, message));
}
else
{
args[0] = tags[0];
}
//Convert flags to arg3
ConvertFlagsToArg(oldfields, 3);
break;
case 1: ConvertTagToArg(3); break; //Polyobj_StartLine
case 5: ConvertTagToArg(4); break; //Polyobj_ExplicitLine
case 181: ConvertTagToArg(2); break; //Plane_Align
case 215: ConvertTagToArg(0); break; //Teleport_Line
case 222: ConvertTagToArg(0); break; //Scroll_Texture_Model
case 160: //Sector_3DFloor
if(args[0] > General.Map.FormatInterface.MaxArgument) // Split sector tag?
{
int hitag = args[0] / 256;
int lotag = args[0] - hitag;
args[0] = lotag;
args[4] = hitag;
if(tags[0] != 0)
{
string message = "Linedef " + Index + ": unable to convert Tag (" + tags[0] + ") to LineID, because target sector tag (arg0) is greater than " + General.Map.FormatInterface.MaxArgument + ".";
General.ErrorLogger.Add(new MapElementErrorItem(ErrorType.Warning, this, message));
}
}
else if(args[0] < General.Map.FormatInterface.MinArgument)
{
string message = "Linedef " + Index + ": unable to convert arg0 (" + args[0] + "), because it's outside of supported argument range [" + General.Map.FormatInterface.MinArgument + ".." + General.Map.FormatInterface.MaxArgument + "].";
General.ErrorLogger.Add(new MapElementErrorItem(ErrorType.Warning, this, message));
}
else if(tags[0] > General.Map.FormatInterface.MinArgument) // Convert to LineID?
{
if(tags[0] > General.Map.FormatInterface.MaxArgument)
{
string message = "Linedef " + Index + ": unable to convert Tag (" + tags[0] + ") to LineID, because linedef tag is greater than " + General.Map.FormatInterface.MaxArgument + ".";
General.ErrorLogger.Add(new MapElementErrorItem(ErrorType.Warning, this, message));
}
else
{
args[4] = tags[0];
args[1] |= 8; // Add "Use arg4 as LineID" flag
}
}
break;
default: // Convert tag to Line_SetIdentification?
if(tags[0] > General.Map.FormatInterface.MinArgument)
{
if(action != 0)
{
string message = "Linedef " + Index + ": unable to convert Tag (" + tags[0] + ") to LineID, because linedef already has an action.";
General.ErrorLogger.Add(new MapElementErrorItem(ErrorType.Warning, this, message));
}
else // Convert to Line_SetIdentification
{
int hiid = tags[0] / 256;
int loid = tags[0] - hiid;
action = 121;
args[0] = loid;
args[4] = hiid;
ConvertFlagsToArg(oldfields, 1);
}
}
else if(tags[0] < General.Map.FormatInterface.MinArgument)
{
string message = "Linedef " + Index + ": unable to convert Tag (" + tags[0] + ") to LineID, because it's outside of supported argument range [" + General.Map.FormatInterface.MinArgument + ".." + General.Map.FormatInterface.MaxArgument + "].";
General.ErrorLogger.Add(new MapElementErrorItem(ErrorType.Warning, this, message));
}
break;
}
// Clear tag
tags[0] = 0;
}
//mxd. Update cached flags
impassableflag = IsFlagSet(General.Map.Config.ImpassableFlag);
// Update color preset
UpdateColorPreset();
}
//mxd
private void ConvertArgToTag(int argnum, bool cleararg)
{
// Convert arg to tag
tags[0] = args[argnum];
// Clear obsolete arg
if(cleararg) args[argnum] = 0;
}
//mxd
private void ConvertTagToArg(int argnum)
{
if(tags[0] < General.Map.FormatInterface.MinArgument || tags[0] > General.Map.FormatInterface.MaxArgument)
{
General.ErrorLogger.Add(ErrorType.Warning, "Linedef " + Index + ": unable to convert Tag (" + tags[0] + ") to LineID because it's outside of supported argument range [" + General.Map.FormatInterface.MinArgument + ".." + General.Map.FormatInterface.MaxArgument + "].");
}
else
{
args[argnum] = tags[0];
}
}
//mxd
private void ConvertArgToFlags(int argnum)
{
if(args[argnum] == 0) return;
// Convert to flags
if((args[argnum] & 1) == 1) flags["zoneboundary"] = true;
if((args[argnum] & 2) == 2) flags["jumpover"] = true;
if((args[argnum] & 4) == 4) flags["blockfloaters"] = true;
if((args[argnum] & 8) == 8) flags["clipmidtex"] = true;
if((args[argnum] & 16) == 16) flags["wrapmidtex"] = true;
if((args[argnum] & 32) == 32) flags["midtex3d"] = true;
if((args[argnum] & 64) == 64) flags["checkswitchrange"] = true;
if((args[argnum] & 128) == 128) flags["firstsideonly"] = true;
// Clear obsolete arg
args[argnum] = 0;
}
//mxd
private void ConvertFlagsToArg(Dictionary<string, bool> oldflags, int argnum)
{
int bits = 0;
if(oldflags.ContainsKey("zoneboundary") && oldflags["zoneboundary"]) bits &= 1;
if(oldflags.ContainsKey("jumpover") && oldflags["jumpover"]) bits &= 2;
if(oldflags.ContainsKey("blockfloaters") && oldflags["blockfloaters"]) bits &= 4;
if(oldflags.ContainsKey("clipmidtex") && oldflags["clipmidtex"]) bits &= 8;
if(oldflags.ContainsKey("wrapmidtex") && oldflags["wrapmidtex"]) bits &= 16;
if(oldflags.ContainsKey("midtex3d") && oldflags["midtex3d"]) bits &= 32;
if(oldflags.ContainsKey("checkswitchrange") && oldflags["checkswitchrange"]) bits &= 64;
if(oldflags.ContainsKey("firstsideonly") && oldflags["firstsideonly"]) bits &= 128;
// Set arg
args[argnum] = bits;
}
// Selected
protected override void DoSelect()
{
base.DoSelect();
selecteditem = map.SelectedLinedefs.AddLast(this);
}
// Deselect
protected override void DoUnselect()
{
base.DoUnselect();
if(selecteditem.List != null) selecteditem.List.Remove(selecteditem);
selecteditem = null;
}
#endregion
#region ================== Methods
// Determine if this line and another line are associated by action and tag.
public bool IsAssociatedWith(Linedef ld)
{
LinedefActionInfo actioninfo;
return this != ld &&
Action > 0 &&
ld.Tag > 0 &&
tags.Contains(ld.Tag) &&
(actioninfo = General.Map.Config.GetLinedefActionInfo(Action)).LineToLineTag &&
(!actioninfo.LineToLineSameAction || Action == ld.Action);
}
// This checks and returns a flag without creating it
public bool IsFlagSet(string flagname)
{
return flags.ContainsKey(flagname) && flags[flagname];
}
// This sets a flag
public void SetFlag(string flagname, bool value)
{
if(!flags.ContainsKey(flagname) || (IsFlagSet(flagname) != value))
{
BeforePropsChange();
flags[flagname] = value;
// Cached flags
if(flagname == General.Map.Config.ImpassableFlag) impassableflag = value;
//mxd
UpdateColorPreset();
}
}
// This returns a copy of the flags dictionary
public Dictionary<string, bool> GetFlags()
{
return new Dictionary<string, bool>(flags);
}
//mxd. This returns enabled flags
public HashSet<string> GetEnabledFlags()
{
HashSet<string> result = new HashSet<string>();
foreach(KeyValuePair<string, bool> group in flags)
if(group.Value) result.Add(group.Key);
return result;
}
// This clears all flags
public void ClearFlags()
{
BeforePropsChange();
flags.Clear();
impassableflag = false;
//mxd
UpdateColorPreset();
}
// This flips the linedef's vertex attachments
public void FlipVertices()
{
// make sure the start/end vertices are not automatically
// deleted if they do not belong to any other line
General.Map.Map.AutoRemove = false;
// Flip vertices
Vertex oldstart = start;
Vertex oldend = end;
SetStartVertex(oldend);
SetEndVertex(oldstart);
General.Map.Map.AutoRemove = true;
// For drawing, the interior now lies on the other side
frontinterior = !frontinterior;
// Update required (angle changed)
NeedUpdate();
General.Map.IsChanged = true;
}
// This flips the sidedefs
public void FlipSidedefs()
{
// Flip sidedefs
Sidedef oldfront = front;
Sidedef oldback = back;
AttachFront(oldback);
AttachBack(oldfront);
General.Map.IsChanged = true;
}
// This returns a point for testing on one side
public Vector2D GetSidePoint(bool front)
{
Vector2D n = new Vector2D();
n.x = (end.Position.x - start.Position.x) * lengthinv * SIDE_POINT_DISTANCE;
n.y = (end.Position.y - start.Position.y) * lengthinv * SIDE_POINT_DISTANCE;
if(front)
{
n.x = -n.x;
n.y = -n.y;
}
Vector2D p = new Vector2D();
p.x = start.Position.x + (end.Position.x - start.Position.x) * 0.5 - n.y;
p.y = start.Position.y + (end.Position.y - start.Position.y) * 0.5 + n.x;
return p;
}
// This returns a point in the middle of the line
public Vector2D GetCenterPoint()
{
return start.Position + (end.Position - start.Position) * 0.5;
}
// This applies single/double sided flags
public void ApplySidedFlags()
{
// Doublesided?
if((front != null) && (back != null))
{
// Apply or remove flags for doublesided line
SetFlag(General.Map.Config.SingleSidedFlag, false);
SetFlag(General.Map.Config.DoubleSidedFlag, true);
}
else
{
// Apply or remove flags for singlesided line
SetFlag(General.Map.Config.SingleSidedFlag, true);
SetFlag(General.Map.Config.DoubleSidedFlag, false);
}
General.Map.IsChanged = true;
}
// This returns all points at which the line intersects with the grid
public List<Vector2D> GetGridIntersections()
{
return GetGridIntersections(0.0);
}
public List<Vector2D> GetGridIntersections(double gridrotation, double gridoriginx = 0.0, double gridoriginy = 0.0)
{
return GetGridIntersections(new Vector2D(), gridrotation, gridoriginx, gridoriginy);
}
// This returns all points at which the line intersects with the grid
public List<Vector2D> GetGridIntersections(Vector2D gridoffset, double gridrotation = 0.0, double gridoriginx = 0.0, double gridoriginy = 0.0)
{
List<Vector2D> coords = new List<Vector2D>();
Vector2D v = new Vector2D();
double minx, maxx, miny, maxy;
bool reversex, reversey;
Vector2D v1 = start.Position;
Vector2D v2 = end.Position;
bool transformed = Math.Abs(gridrotation) > 1e-4 || Math.Abs(gridoriginx) > 1e-4 || Math.Abs(gridoriginy) > 1e-4;
if (transformed)
{
v1 = (v1 - new Vector2D(gridoriginx, gridoriginy)).GetRotated(-gridrotation);
v2 = (v2 - new Vector2D(gridoriginx, gridoriginy)).GetRotated(-gridrotation);
}
if(v1.x > v2.x)
{
minx = v2.x;
maxx = v1.x;
reversex = true;
}
else
{
minx = v1.x;
maxx = v2.x;
reversex = false;
}
if(v1.y > v2.y)
{
miny = v2.y;
maxy = v1.y;
reversey = true;
}
else
{
miny = v1.y;
maxy = v2.y;
reversey = false;
}
// Go for all vertical grid lines in between line start and end
double gx = General.Map.Grid.GetHigher(minx) + gridoffset.x;
if(gx < maxx)
{
for(; gx < maxx; gx += General.Map.Grid.GridSizeF)
{
// Add intersection point at this x coordinate
double u = (gx - minx) / (maxx - minx);
if(reversex) u = 1.0 - u;
v.x = gx;
v.y = v1.y + (v2.y - v1.y) * u;
coords.Add(v);
}
}
// Go for all horizontal grid lines in between line start and end
double gy = General.Map.Grid.GetHigher(miny) + gridoffset.y;
if(gy < maxy)
{
for(; gy < maxy; gy += General.Map.Grid.GridSizeF)
{
// Add intersection point at this y coordinate
double u = (gy - miny) / (maxy - miny);
if(reversey) u = 1.0 - u;
v.x = v1.x + (v2.x - v1.x) * u;
v.y = gy;
coords.Add(v);
}
}
if (transformed)
{
for (int i = 0; i < coords.Count; i++)
{
coords[i] = coords[i].GetRotated(gridrotation) + new Vector2D(gridoriginx, gridoriginy);
}
}
// Profit
return coords;
}
// This returns the closest coordinates ON the line
public Vector2D NearestOnLine(Vector2D pos)
{
double u = Line2D.GetNearestOnLine(start.Position, end.Position, pos);
if(u < 0.0) u = 0.0; else if(u > 1.0) u = 1.0;
return Line2D.GetCoordinatesAt(start.Position, end.Position, u);
}
// This returns the shortest distance from given coordinates to line
public double SafeDistanceToSq(Vector2D p, bool bounded)
{
Vector2D v1 = start.Position;
Vector2D v2 = end.Position;
// Calculate intersection offset
double u = ((p.x - v1.x) * (v2.x - v1.x) + (p.y - v1.y) * (v2.y - v1.y)) * lengthsqinv;
// Limit intersection offset to the line
if (bounded)
{
// We really don't want u to be 0 or 1, because that'd mean the distance will be measured
// from the vertices, which will result in linedefs being equally far away. We still need
// special handling for linedefs that are shorter than 1 mu (which is possible in UDMF)
// Detailed explanation here: https://github.com/jewalky/GZDoom-Builder-Bugfix/issues/307
if (lengthinv > 1.0)
{
u = Math.Max(0, Math.Min(1.0, u));
}
else
{
u = Math.Max(lengthinv, Math.Min(1.0 - lengthinv, u));
}
}
/*
// Calculate intersection point
Vector2D i = v1 + u * (v2 - v1);
// Return distance between intersection and point
// which is the shortest distance to the line
float ldx = p.x - i.x;
float ldy = p.y - i.y;
*/
// ano - let's check to see if we can do the previous faster without using operator overloading and etc
// the answer: running it int.MaxValue / 64 times it tended to be around 100ms faster
double ldx = p.x - (v1.x + u * (v2.x - v1.x));
double ldy = p.y - (v1.y + u * (v2.y - v1.y));
return ldx * ldx + ldy * ldy;
}
// This returns the shortest distance from given coordinates to line
public double SafeDistanceTo(Vector2D p, bool bounded)
{
return Math.Sqrt(SafeDistanceToSq(p, bounded));
}
// This returns the shortest distance from given coordinates to line
public double DistanceToSq(Vector2D p, bool bounded)
{
Vector2D v1 = start.Position;
Vector2D v2 = end.Position;
// Calculate intersection offset
double u = ((p.x - v1.x) * (v2.x - v1.x) + (p.y - v1.y) * (v2.y - v1.y)) * lengthsqinv;
// Limit intersection offset to the line
if(bounded) if(u < 0.0) u = 0.0; else if(u > 1.0) u = 1.0;
// Calculate intersection point
Vector2D i = v1 + u * (v2 - v1);
// Return distance between intersection and point
// which is the shortest distance to the line
double ldx = p.x - i.x;
double ldy = p.y - i.y;
return ldx * ldx + ldy * ldy;
}
// This returns the shortest distance from given coordinates to line
public double DistanceTo(Vector2D p, bool bounded)
{
return Math.Sqrt(DistanceToSq(p, bounded));
}
// This tests on which side of the line the given coordinates are
// returns < 0 for front (right) side, > 0 for back (left) side and 0 if on the line
public double SideOfLine(Vector2D p)
{
Vector2D v1 = start.Position;
Vector2D v2 = end.Position;
// Calculate and return side information
return (p.y - v1.y) * (v2.x - v1.x) - (p.x - v1.x) * (v2.y - v1.y);
}
// This splits this line by vertex v
// Returns the new line resulting from the split, or null when it failed
public Linedef Split(Vertex v)
{
Sidedef nsd;
// Copy linedef and change vertices
Linedef nl = map.CreateLinedef(v, end);
if(nl == null) return null;
CopyPropertiesTo(nl);
SetEndVertex(v);
nl.Selected = this.Selected;
nl.marked = this.marked;
nl.ExtraFloorFlag = this.ExtraFloorFlag; //mxd
// Copy front sidedef if exists
if(front != null)
{
nsd = map.CreateSidedef(nl, true, front.Sector);
if(nsd == null) return null;
front.CopyPropertiesTo(nsd);
nsd.Marked = front.Marked;
}
// Copy back sidedef if exists
if(back != null)
{
nsd = map.CreateSidedef(nl, false, back.Sector);
if(nsd == null) return null;
back.CopyPropertiesTo(nsd);
nsd.Marked = back.Marked;
}
//mxd
AdjustSplitCoordinates(this, nl, General.Settings.SplitLineBehavior);
// Return result
General.Map.IsChanged = true;
return nl;
}
// 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)
{
// Check which lines were 2 sided
bool otherwas2s = ((other.Front != null) && (other.Back != null));
bool thiswas2s = ((this.Front != null) && (this.Back != null));
// Get sector references
Sector otherfs = (other.front != null ? other.front.Sector : null);
Sector otherbs = (other.back != null ? other.back.Sector : null);
Sector thisfs = (this.front != null ? this.front.Sector : null);
Sector thisbs = (this.back != null ? this.back.Sector : null);
// This line has no sidedefs?
if((thisfs == null) && (thisbs == null))
{
// We have no sidedefs, so we have no influence
// Nothing to change on the other line
}
// Other line has no sidedefs?
else if((otherfs == null) && (otherbs == 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((otherfs != null) && (otherfs == thisfs))
{
// 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((otherbs != null) && (otherbs == thisbs))
{
// 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((otherfs != null) && (otherfs == thisbs))
{
// 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((otherbs != null) && (otherbs == thisfs))
{
// 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(this.back != null) this.back.AddTexturesTo(other.front);
// Change sidedefs?
if(!JoinChangeSidedefs(other, false, front)) return false;
}
else
{
// Copy textures
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)
{
if(otherbs == null)
{
// Copy textures
if(other.back != null) other.back.AddTexturesTo(this.front);
// Change sidedefs
if(!JoinChangeSidedefs(other, false, front)) return false;
}
}
else
{
if(otherfs == null)
{
// Copy textures
if(other.front != null) other.front.AddTexturesTo(this.front);
// 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;
}
// Both lines face the same way
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( (!otherwas2s && (other.Front != null && other.Back != null)) ||
(otherwas2s && (other.Front == null || other.Back == null)) )
other.ApplySidedFlags();
// Remove unneeded textures
if(other.front != null) other.front.RemoveUnneededTextures(!(otherwas2s && thiswas2s));
if(other.back != null) other.back.RemoveUnneededTextures(!(otherwas2s && thiswas2s));
}
// 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;
}
// This changes sidedefs (used for joining lines)
// target: The linedef on which to remove or create a new sidedef
// front: Side on which to remove or create the sidedef (true for front side)
// newside: The side from which to copy the properties to the new sidedef.
// If this is null, no sidedef will be created (only removed)
// Returns false when the operation could not be completed.
private bool JoinChangeSidedefs(Linedef target, bool front, Sidedef newside)
{
// Change sidedefs
if(front)
{
if(target.front != null) target.front.Dispose();
}
else
{
if(target.back != null) target.back.Dispose();
}
if(newside != null)
{
Sidedef sd = map.CreateSidedef(target, front, newside.Sector);
if(sd == null) return false;
newside.CopyPropertiesTo(sd);
sd.Marked = newside.Marked;
}
return true;
}
//mxd
internal void UpdateColorPreset()
{
for(int i = 0; i < General.Map.ConfigSettings.LinedefColorPresets.Length; i++)
{
if(General.Map.ConfigSettings.LinedefColorPresets[i].Matches(this))
{
colorPresetIndex = i;
return;
}
}
colorPresetIndex = -1;
}
/// <summary>
/// Changes the linedef's index to a new index.
/// </summary>
/// <param name="newindex">The new index to set</param>
public void ChangeIndex(int newindex)
{
General.Map.UndoRedo.RecIndexLinedef(Index, newindex);
map?.ChangeLindefIndex(Index, newindex);
}
// String representation
public override string ToString()
{
#if DEBUG
string starttext = (start != null ? " (" + start : string.Empty);
string endtext = (end != null ? ", " + end + ")" : string.Empty);
return "Linedef " + listindex + (marked ? " (marked)" : "") + starttext + endtext; //mxd
#else
return "Linedef " + listindex;
#endif
}
#endregion
#region ================== Changes
// This updates all properties
public void Update(Dictionary<string, bool> flags, int activate, List<int> tags, int action, int[] args)
{
BeforePropsChange();
// Apply changes
this.flags = new Dictionary<string, bool>(flags);
this.tags = new List<int>(tags); //mxd
this.activate = activate;
this.action = action;
this.args = new int[NUM_ARGS];
args.CopyTo(this.args, 0);
this.updateneeded = true;
}
// mxd. Moved here from BuilderModes.BuilderPlug
// This adjusts texture coordinates for splitted lines according to the user preferences
private static void AdjustSplitCoordinates(Linedef oldline, Linedef newline, SplitLineBehavior splitlinebehavior)
{
switch(splitlinebehavior)
{
case SplitLineBehavior.Interpolate:
//Make texture offset adjustments
if(oldline.back != null)
{
if((oldline.back.MiddleRequired() && oldline.back.LongMiddleTexture != MapSet.EmptyLongName) || oldline.back.HighRequired() || oldline.back.LowRequired())
{
int distance = (int)Vector2D.Distance(newline.start.Position, newline.end.Position);
if(General.Map.UDMF && General.Map.Config.UseLocalSidedefTextureOffsets)
{
if(distance != 0) oldline.back.SetUdmfTextureOffsetX(distance);
}
else
{
oldline.back.OffsetX += distance;
}
}
}
if(newline.front != null && ((newline.front.MiddleRequired() || newline.front.LongMiddleTexture != MapSet.EmptyLongName) || newline.front.HighRequired() || newline.front.LowRequired()))
{
int distance = (int)Vector2D.Distance(oldline.start.Position, oldline.end.Position);
if(General.Map.UDMF && General.Map.Config.UseLocalSidedefTextureOffsets)
{
if(distance != 0) newline.front.SetUdmfTextureOffsetX(distance);
}
else
{
newline.front.OffsetX += distance;
}
}
//Clamp texture coordinates
if((oldline.front != null) && (newline.front != null))
{
//get texture
ImageData texture = null;
if(newline.front.MiddleRequired() && newline.front.LongMiddleTexture != MapSet.EmptyLongName && General.Map.Data.GetTextureExists(newline.front.LongMiddleTexture))
texture = General.Map.Data.GetTextureImage(newline.front.MiddleTexture);
else if(newline.front.HighRequired() && newline.front.LongHighTexture != MapSet.EmptyLongName && General.Map.Data.GetTextureExists(newline.front.LongHighTexture))
texture = General.Map.Data.GetTextureImage(newline.front.HighTexture);
else if(newline.front.LowRequired() && newline.front.LongLowTexture != MapSet.EmptyLongName && General.Map.Data.GetTextureExists(newline.front.LongLowTexture))
texture = General.Map.Data.GetTextureImage(newline.front.LowTexture);
//clamp offsetX
if(texture != null && texture.IsImageLoaded)
newline.front.OffsetX %= texture.Width;
}
if((oldline.back != null) && (newline.back != null))
{
//get texture
ImageData texture = null;
if(newline.back.MiddleRequired() && newline.back.LongMiddleTexture != MapSet.EmptyLongName && General.Map.Data.GetTextureExists(newline.back.LongMiddleTexture))
texture = General.Map.Data.GetTextureImage(newline.back.MiddleTexture);
else if(newline.back.HighRequired() && newline.back.LongHighTexture != MapSet.EmptyLongName && General.Map.Data.GetTextureExists(newline.back.LongHighTexture))
texture = General.Map.Data.GetTextureImage(newline.back.HighTexture);
else if(newline.back.LowRequired() && newline.back.LongLowTexture != MapSet.EmptyLongName && General.Map.Data.GetTextureExists(newline.back.LongLowTexture))
texture = General.Map.Data.GetTextureImage(newline.back.LowTexture);
//clamp offsetX
if(texture != null && texture.IsImageLoaded)
newline.back.OffsetX %= texture.Width;
}
break;
case SplitLineBehavior.CopyXY:
if((oldline.front != null) && (newline.front != null))
{
newline.front.OffsetX = oldline.front.OffsetX;
newline.front.OffsetY = oldline.front.OffsetY;
//mxd. Copy UDMF offsets as well
if(General.Map.UDMF && General.Map.Config.UseLocalSidedefTextureOffsets)
{
UniFields.SetFloat(newline.front.Fields, "offsetx_top", oldline.front.Fields.GetValue("offsetx_top", 0.0));
UniFields.SetFloat(newline.front.Fields, "offsetx_mid", oldline.front.Fields.GetValue("offsetx_mid", 0.0));
UniFields.SetFloat(newline.front.Fields, "offsetx_bottom", oldline.front.Fields.GetValue("offsetx_bottom", 0.0));
UniFields.SetFloat(newline.front.Fields, "offsety_top", oldline.front.Fields.GetValue("offsety_top", 0.0));
UniFields.SetFloat(newline.front.Fields, "offsety_mid", oldline.front.Fields.GetValue("offsety_mid", 0.0));
UniFields.SetFloat(newline.front.Fields, "offsety_bottom", oldline.front.Fields.GetValue("offsety_bottom", 0.0));
}
}
if((oldline.back != null) && (newline.back != null))
{
newline.back.OffsetX = oldline.back.OffsetX;
newline.back.OffsetY = oldline.back.OffsetY;
//mxd. Copy UDMF offsets as well
if(General.Map.UDMF && General.Map.Config.UseLocalSidedefTextureOffsets)
{
UniFields.SetFloat(newline.back.Fields, "offsetx_top", oldline.back.Fields.GetValue("offsetx_top", 0.0));
UniFields.SetFloat(newline.back.Fields, "offsetx_mid", oldline.back.Fields.GetValue("offsetx_mid", 0.0));
UniFields.SetFloat(newline.back.Fields, "offsetx_bottom", oldline.back.Fields.GetValue("offsetx_bottom", 0.0));
UniFields.SetFloat(newline.back.Fields, "offsety_top", oldline.back.Fields.GetValue("offsety_top", 0.0));
UniFields.SetFloat(newline.back.Fields, "offsety_mid", oldline.back.Fields.GetValue("offsety_mid", 0.0));
UniFields.SetFloat(newline.back.Fields, "offsety_bottom", oldline.back.Fields.GetValue("offsety_bottom", 0.0));
}
}
break;
case SplitLineBehavior.ResetXCopyY:
if((oldline.front != null) && (newline.front != null))
{
newline.front.OffsetX = 0;
newline.front.OffsetY = oldline.front.OffsetY;
//mxd. Reset UDMF X offset as well
if(General.Map.UDMF && General.Map.Config.UseLocalSidedefTextureOffsets)
{
UniFields.SetFloat(newline.front.Fields, "offsetx_top", 0.0);
UniFields.SetFloat(newline.front.Fields, "offsetx_mid", 0.0);
UniFields.SetFloat(newline.front.Fields, "offsetx_bottom", 0.0);
}
}
if((oldline.back != null) && (newline.back != null))
{
newline.back.OffsetX = 0;
newline.back.OffsetY = oldline.back.OffsetY;
//mxd. Reset UDMF X offset and copy Y offset as well
if(General.Map.UDMF && General.Map.Config.UseLocalSidedefTextureOffsets)
{
UniFields.SetFloat(newline.back.Fields, "offsetx_top", 0.0);
UniFields.SetFloat(newline.back.Fields, "offsetx_mid", 0.0);
UniFields.SetFloat(newline.back.Fields, "offsetx_bottom", 0.0);
UniFields.SetFloat(newline.back.Fields, "offsety_top", oldline.back.Fields.GetValue("offsety_top", 0.0));
UniFields.SetFloat(newline.back.Fields, "offsety_mid", oldline.back.Fields.GetValue("offsety_mid", 0.0));
UniFields.SetFloat(newline.back.Fields, "offsety_bottom", oldline.back.Fields.GetValue("offsety_bottom", 0.0));
}
}
break;
case SplitLineBehavior.ResetXY:
if(newline.front != null)
{
newline.front.OffsetX = 0;
newline.front.OffsetY = 0;
if(General.Map.UDMF && General.Map.Config.UseLocalSidedefTextureOffsets)
{
UniFields.SetFloat(newline.front.Fields, "offsetx_top", 0.0);
UniFields.SetFloat(newline.front.Fields, "offsetx_mid", 0.0);
UniFields.SetFloat(newline.front.Fields, "offsetx_bottom", 0.0);
UniFields.SetFloat(newline.front.Fields, "offsety_top", 0.0);
UniFields.SetFloat(newline.front.Fields, "offsety_mid", 0.0);
UniFields.SetFloat(newline.front.Fields, "offsety_bottom", 0.0);
}
}
if(newline.back != null)
{
newline.back.OffsetX = 0;
newline.back.OffsetY = 0;
if(General.Map.UDMF && General.Map.Config.UseLocalSidedefTextureOffsets)
{
UniFields.SetFloat(newline.back.Fields, "offsetx_top", 0.0);
UniFields.SetFloat(newline.back.Fields, "offsetx_mid", 0.0);
UniFields.SetFloat(newline.back.Fields, "offsetx_bottom", 0.0);
UniFields.SetFloat(newline.back.Fields, "offsety_top", 0.0);
UniFields.SetFloat(newline.back.Fields, "offsety_mid", 0.0);
UniFields.SetFloat(newline.back.Fields, "offsety_bottom", 0.0);
}
}
break;
}
}
#endregion
}
}
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