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https://git.do.srb2.org/STJr/UltimateZoneBuilder.git
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763 lines
20 KiB
C#
763 lines
20 KiB
C#
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#region ================== Copyright (c) 2007 Pascal vd Heiden
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/*
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* Copyright (c) 2007 Pascal vd Heiden, www.codeimp.com
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* This program is released under GNU General Public License
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#endregion
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#region ================== Namespaces
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Text;
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using CodeImp.DoomBuilder.Geometry;
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using CodeImp.DoomBuilder.Rendering;
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using SlimDX.Direct3D;
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using System.Drawing;
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#endregion
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namespace CodeImp.DoomBuilder.Map
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{
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public sealed class Linedef
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{
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#region ================== Constants
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public const float SIDE_POINT_DISTANCE = 0.001f;
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public const int NUM_ARGS = 5;
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public static readonly byte[] EMPTY_ARGS = new byte[NUM_ARGS];
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#endregion
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#region ================== Variables
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// Map
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private MapSet map;
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// List items
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private LinkedListNode<Linedef> mainlistitem;
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private LinkedListNode<Linedef> startvertexlistitem;
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private LinkedListNode<Linedef> endvertexlistitem;
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// Vertices
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private Vertex start;
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private Vertex end;
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// Sidedefs
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private Sidedef front;
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private Sidedef back;
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// Cache
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private bool updateneeded;
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private float lengthsq;
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private float lengthsqinv;
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private float length;
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private float lengthinv;
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private float angle;
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private RectangleF rect;
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// Properties
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private int flags;
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private int action;
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private int tag;
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private byte[] args;
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// Additional fields
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private SortedList<string, object> fields;
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// Selections
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private bool selected;
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private bool marked;
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// Disposing
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private bool isdisposed = false;
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#endregion
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#region ================== Properties
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public MapSet Map { get { return map; } }
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public Vertex Start { get { return start; } }
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public Vertex End { get { return end; } }
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public Sidedef Front { get { return front; } }
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public Sidedef Back { get { return back; } }
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public bool IsDisposed { get { return isdisposed; } }
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public Line2D Line { get { return new Line2D(start.Position, end.Position); } }
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public int Flags { get { return flags; } set { flags = value; } }
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public int Action { get { return action; } set { action = value; } }
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public int Tag { get { return tag; } set { tag = value; if((tag < 0) || (tag > MapSet.HIGHEST_TAG)) throw new ArgumentOutOfRangeException("Tag", "Invalid tag number"); } }
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public bool Selected { get { return selected; } set { selected = value; } }
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public bool Marked { get { return marked; } set { marked = value; } }
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public float LengthSq { get { return lengthsq; } }
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public float Length { get { return length; } }
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public float LengthInv { get { return lengthinv; } }
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public float Angle { get { return angle; } }
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public int AngleDeg { get { return (int)(angle * Angle2D.PIDEG); } }
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public RectangleF Rect { get { return rect; } }
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public byte[] Args { get { return args; } }
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public SortedList<string, object> Fields { get { return fields; } }
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#endregion
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#region ================== Constructor / Disposer
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// Constructor
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internal Linedef(MapSet map, LinkedListNode<Linedef> listitem, Vertex start, Vertex end)
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{
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// Initialize
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this.map = map;
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this.mainlistitem = listitem;
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this.start = start;
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this.end = end;
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this.updateneeded = true;
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this.args = new byte[NUM_ARGS];
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// Attach to vertices
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startvertexlistitem = start.AttachLinedef(this);
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endvertexlistitem = end.AttachLinedef(this);
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// We have no destructor
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GC.SuppressFinalize(this);
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}
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// Disposer
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public void Dispose()
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{
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// Not already disposed?
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if(!isdisposed)
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{
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// Already set isdisposed so that changes can be prohibited
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isdisposed = true;
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// Remove from main list
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mainlistitem.List.Remove(mainlistitem);
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// Detach from vertices
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start.DetachLinedef(startvertexlistitem);
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end.DetachLinedef(endvertexlistitem);
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startvertexlistitem = null;
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endvertexlistitem = null;
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// Dispose sidedefs
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if(front != null) front.Dispose();
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if(back != null) back.Dispose();
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// Clean up
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mainlistitem = null;
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start = null;
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end = null;
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front = null;
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back = null;
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map = null;
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}
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}
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#endregion
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#region ================== Management
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// This sets new start vertex
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public void SetStartVertex(Vertex v)
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{
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// Change start
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if(startvertexlistitem != null) start.DetachLinedef(startvertexlistitem);
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startvertexlistitem = null;
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start = v;
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startvertexlistitem = start.AttachLinedef(this);
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this.updateneeded = true;
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}
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// This sets new end vertex
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public void SetEndVertex(Vertex v)
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{
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// Change end
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if(endvertexlistitem != null) end.DetachLinedef(endvertexlistitem);
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endvertexlistitem = null;
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end = v;
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endvertexlistitem = end.AttachLinedef(this);
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this.updateneeded = true;
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}
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// This copies all properties to another line
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public void CopyPropertiesTo(Linedef l)
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{
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// Copy properties
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l.action = action;
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l.args = (byte[])args.Clone();
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l.flags = flags;
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l.tag = tag;
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l.updateneeded = true;
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if(fields != null) l.MakeFields(fields);
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l.selected = selected;
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}
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// This attaches a sidedef on the front
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public void AttachFront(Sidedef s)
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{
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// No sidedef here yet?
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if(front == null)
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{
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// Attach and recalculate
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front = s;
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updateneeded = true;
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}
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else throw new Exception("Linedef already has a front Sidedef.");
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}
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// This attaches a sidedef on the back
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public void AttachBack(Sidedef s)
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{
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// No sidedef here yet?
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if(back == null)
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{
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// Attach and recalculate
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back = s;
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updateneeded = true;
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}
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else throw new Exception("Linedef already has a back Sidedef.");
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}
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// This detaches a sidedef from the front
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public void DetachSidedef(Sidedef s)
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{
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// Sidedef is on the front?
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if(front == s)
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{
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// Remove sidedef reference
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front = null;
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updateneeded = true;
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}
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// Sidedef is on the back?
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else if(back == s)
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{
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// Remove sidedef reference
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back = null;
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updateneeded = true;
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}
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else throw new Exception("Specified Sidedef is not attached to this Linedef.");
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}
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// This updates the line when changes have been made
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public void UpdateCache()
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{
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Vector2D delta;
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float l, t, r, b;
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// Update if needed
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if(updateneeded)
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{
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// Delta vector
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delta = end.Position - start.Position;
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// Recalculate values
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lengthsq = delta.GetLengthSq();
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length = (float)Math.Sqrt(lengthsq);
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if(length > 0f) lengthinv = 1f / length; else lengthinv = 1f / 0.0000000001f;
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if(lengthsq > 0f) lengthsqinv = 1f / lengthsq; else lengthsqinv = 1f / 0.0000000001f;
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angle = delta.GetAngle();
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l = Math.Min(start.Position.x, end.Position.x);
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t = Math.Min(start.Position.y, end.Position.y);
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r = Math.Max(start.Position.x, end.Position.x);
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b = Math.Max(start.Position.y, end.Position.y);
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rect = new RectangleF(l, t, r - l, b - t);
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// Updated
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updateneeded = false;
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}
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}
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// This flags the line needs an update because it moved
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public void NeedUpdate()
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{
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// Update this line
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updateneeded = true;
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// Update sectors as well
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if(front != null) front.Sector.UpdateNeeded = true;
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if(back != null) back.Sector.UpdateNeeded = true;
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}
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#endregion
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#region ================== Fields
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// This makes new fields
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public void MakeFields()
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{
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if(fields != null) fields = new SortedList<string, object>();
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}
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// This makes fields from another list of fields
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public void MakeFields(SortedList<string, object> copyfrom)
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{
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if(fields != null) fields = new SortedList<string, object>();
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foreach(KeyValuePair<string, object> f in copyfrom) fields[f.Key] = f.Value;
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}
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#endregion
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#region ================== Methods
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// This flips the linedef's vertex attachments
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public void FlipVertices()
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{
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// Flip vertices
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Vertex v = start;
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start = end;
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end = v;
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// Flip tickets accordingly
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LinkedListNode<Linedef> vn = startvertexlistitem;
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startvertexlistitem = endvertexlistitem;
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endvertexlistitem = vn;
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// Update required (angle changed)
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NeedUpdate();
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}
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// This flips the sidedefs
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public void FlipSidedefs()
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{
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// Flip sidedefs
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Sidedef sd = front;
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front = back;
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back = sd;
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}
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// This returns a point for testing on one side
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public Vector2D GetSidePoint(bool front)
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{
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Vector2D n = new Vector2D();
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n.x = (end.Position.x - start.Position.x) * lengthinv * SIDE_POINT_DISTANCE;
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n.y = (end.Position.y - start.Position.y) * lengthinv * SIDE_POINT_DISTANCE;
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if(front)
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{
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n.x = -n.x;
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n.y = -n.y;
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}
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Vector2D p = new Vector2D();
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p.x = start.Position.x + (end.Position.x - start.Position.x) * 0.5f - n.y;
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p.y = start.Position.y + (end.Position.y - start.Position.y) * 0.5f + n.x;
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return p;
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}
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// This applies single/double sided flags
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public void ApplySidedFlags()
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{
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// Doublesided?
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if((front != null) && (back != null))
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{
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// Apply or remove flags for doublesided line
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flags &= ~General.Map.Config.SingleSidedFlags;
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flags |= General.Map.Config.DoubleSidedFlags;
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}
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else
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{
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// Apply or remove flags for singlesided line
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flags &= ~General.Map.Config.DoubleSidedFlags;
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flags |= General.Map.Config.SingleSidedFlags;
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}
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}
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// This returns all points at which the line intersects with the grid
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public List<Vector2D> GetGridIntersections()
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{
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List<Vector2D> coords = new List<Vector2D>();
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Vector2D v = new Vector2D();
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float gx, gy, minx, maxx, miny, maxy;
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bool reversex, reversey;
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if(start.Position.x > end.Position.x)
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{
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minx = end.Position.x;
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maxx = start.Position.x;
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reversex = true;
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}
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else
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{
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minx = start.Position.x;
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maxx = end.Position.x;
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reversex = false;
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}
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if(start.Position.y > end.Position.y)
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{
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miny = end.Position.y;
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maxy = start.Position.y;
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reversey = true;
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}
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else
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{
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miny = start.Position.y;
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maxy = end.Position.y;
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reversey = false;
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}
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// Go for all vertical grid lines in between line start and end
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gx = General.Map.Grid.GetHigher(minx);
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if(gx < maxx)
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{
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for(; gx < maxx; gx += General.Map.Grid.GridSizeF)
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{
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// Add intersection point at this x coordinate
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float u = (gx - minx) / (maxx - minx);
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if(reversex) u = 1.0f - u;
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v.x = gx;
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v.y = start.Position.y + (end.Position.y - start.Position.y) * u;
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coords.Add(v);
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}
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}
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// Go for all horizontal grid lines in between line start and end
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gy = General.Map.Grid.GetHigher(miny);
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if(gy < maxy)
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{
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for(; gy < maxy; gy += General.Map.Grid.GridSizeF)
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{
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// Add intersection point at this y coordinate
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float u = (gy - miny) / (maxy - miny);
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if(reversey) u = 1.0f - u;
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v.x = start.Position.x + (end.Position.x - start.Position.x) * u;
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v.y = gy;
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coords.Add(v);
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}
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}
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// Profit
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return coords;
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}
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// This returns the closest coordinates ON the line
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public Vector2D NearestOnLine(Vector2D pos)
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{
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float u = Line2D.GetNearestOnLine(start.Position, end.Position, pos);
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if(u < 0f) u = 0f; else if(u > 1f) u = 1f;
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return Line2D.GetCoordinatesAt(start.Position, end.Position, u);
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}
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// This returns the shortest distance from given coordinates to line
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public float SafeDistanceToSq(Vector2D p, bool bounded)
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{
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Vector2D v1 = start.Position;
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Vector2D v2 = end.Position;
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// Calculate intersection offset
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float u = ((p.x - v1.x) * (v2.x - v1.x) + (p.y - v1.y) * (v2.y - v1.y)) * lengthsqinv;
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// Limit intersection offset to the line
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if(bounded) if(u < lengthinv) u = lengthinv; else if(u > (1f - lengthinv)) u = 1f - lengthinv;
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// Calculate intersection point
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Vector2D i = v1 + u * (v2 - v1);
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// Return distance between intersection and point
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// which is the shortest distance to the line
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float ldx = p.x - i.x;
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float ldy = p.y - i.y;
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return ldx * ldx + ldy * ldy;
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}
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// This returns the shortest distance from given coordinates to line
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public float SafeDistanceTo(Vector2D p, bool bounded)
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{
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return (float)Math.Sqrt(SafeDistanceToSq(p, bounded));
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}
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// This returns the shortest distance from given coordinates to line
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public float DistanceToSq(Vector2D p, bool bounded)
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{
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Vector2D v1 = start.Position;
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Vector2D v2 = end.Position;
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// Calculate intersection offset
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float u = ((p.x - v1.x) * (v2.x - v1.x) + (p.y - v1.y) * (v2.y - v1.y)) * lengthsqinv;
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// Limit intersection offset to the line
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if(bounded) if(u < 0f) u = 0f; else if(u > 1f) u = 1f;
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// Calculate intersection point
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Vector2D i = v1 + u * (v2 - v1);
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// Return distance between intersection and point
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// which is the shortest distance to the line
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float ldx = p.x - i.x;
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float ldy = p.y - i.y;
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return ldx * ldx + ldy * ldy;
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}
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// This returns the shortest distance from given coordinates to line
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public float DistanceTo(Vector2D p, bool bounded)
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{
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return (float)Math.Sqrt(DistanceToSq(p, bounded));
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}
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// This tests on which side of the line the given coordinates are
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// returns < 0 for front (right) side, > 0 for back (left) side and 0 if on the line
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public float SideOfLine(Vector2D p)
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{
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Vector2D v1 = start.Position;
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Vector2D v2 = end.Position;
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// Calculate and return side information
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return (p.y - v1.y) * (v2.x - v1.x) - (p.x - v1.x) * (v2.y - v1.y);
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}
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// This splits this line by vertex v
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// Returns the new line resulting from the split
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public Linedef Split(Vertex v)
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{
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Linedef nl;
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Sidedef nsd;
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// Copy linedef and change vertices
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nl = map.CreateLinedef(v, end);
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CopyPropertiesTo(nl);
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SetEndVertex(v);
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nl.selected = this.selected;
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nl.marked = this.marked;
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// Copy front sidedef if exists
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if(front != null)
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{
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nsd = map.CreateSidedef(nl, true, front.Sector);
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front.CopyPropertiesTo(nsd);
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nsd.Marked = front.Marked;
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}
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// Copy back sidedef if exists
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if(back != null)
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{
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nsd = map.CreateSidedef(nl, false, back.Sector);
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back.CopyPropertiesTo(nsd);
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nsd.Marked = back.Marked;
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}
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// Return result
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return nl;
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}
|
|
|
|
// This joins the line with another line
|
|
// This line will be disposed
|
|
public void 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)
|
|
{
|
|
JoinChangeSidedefs(other, true, front);
|
|
JoinChangeSidedefs(other, false, back);
|
|
}
|
|
else
|
|
{
|
|
JoinChangeSidedefs(other, false, front);
|
|
JoinChangeSidedefs(other, true, back);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Compare front sectors
|
|
if(l1fs == l2fs)
|
|
{
|
|
// Copy textures
|
|
if(other.front != null) other.front.AddTexturesTo(this.back);
|
|
if(this.front != null) this.front.AddTexturesTo(other.back);
|
|
|
|
// Change sidedefs
|
|
JoinChangeSidedefs(other, true, back);
|
|
}
|
|
// Compare back sectors
|
|
else if(l1bs == l2bs)
|
|
{
|
|
// Copy textures
|
|
if(other.back != null) other.back.AddTexturesTo(this.front);
|
|
if(this.back != null) this.back.AddTexturesTo(other.front);
|
|
|
|
// Change sidedefs
|
|
JoinChangeSidedefs(other, false, front);
|
|
}
|
|
// Compare front and back
|
|
else if(l1fs == l2bs)
|
|
{
|
|
// Copy textures
|
|
if(other.front != null) other.front.AddTexturesTo(this.front);
|
|
if(this.back != null) this.back.AddTexturesTo(other.back);
|
|
|
|
// Change sidedefs
|
|
JoinChangeSidedefs(other, true, front);
|
|
}
|
|
// Compare back and front
|
|
else if(l1bs == l2fs)
|
|
{
|
|
// Copy textures
|
|
if(other.back != null) other.back.AddTexturesTo(this.back);
|
|
if(this.front != null) this.front.AddTexturesTo(other.front);
|
|
|
|
// Change sidedefs
|
|
JoinChangeSidedefs(other, false, back);
|
|
}
|
|
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
|
|
JoinChangeSidedefs(other, false, front);
|
|
}
|
|
else
|
|
{
|
|
// Copy textures
|
|
if(other.back != null) other.back.AddTexturesTo(this.back);
|
|
if(this.front != null) this.front.AddTexturesTo(other.front);
|
|
|
|
// Change sidedefs
|
|
JoinChangeSidedefs(other, false, back);
|
|
}
|
|
}
|
|
// This line single sided?
|
|
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
|
|
JoinChangeSidedefs(other, false, front);
|
|
}
|
|
else
|
|
{
|
|
// Copy textures
|
|
if(other.front != null) other.front.AddTexturesTo(this.front);
|
|
if(this.back != null) this.back.AddTexturesTo(other.back);
|
|
|
|
// Change sidedefs
|
|
JoinChangeSidedefs(other, true, front);
|
|
}
|
|
}
|
|
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
|
|
JoinChangeSidedefs(other, false, front);
|
|
}
|
|
else
|
|
{
|
|
// Copy textures
|
|
if(other.back != null) other.back.AddTexturesTo(this.back);
|
|
if(this.front != null) this.front.AddTexturesTo(other.front);
|
|
|
|
// Change sidedefs
|
|
JoinChangeSidedefs(other, false, back);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// If either of the two lines was selected, keep the other selected
|
|
if(this.selected) other.selected = true;
|
|
if(this.marked) other.marked = true;
|
|
|
|
// Apply single/double sided flags
|
|
other.ApplySidedFlags();
|
|
|
|
// Remove unneeded textures
|
|
if(other.front != null) other.front.RemoveUnneededTextures(!(l1was2s && l2was2s));
|
|
if(other.back != null) other.back.RemoveUnneededTextures(!(l1was2s && l2was2s));
|
|
|
|
// I got killed by the other.
|
|
this.Dispose();
|
|
}
|
|
|
|
// This changes sidedefs (used for joining lines)
|
|
private void JoinChangeSidedefs(Linedef other, bool front, Sidedef newside)
|
|
{
|
|
Sidedef sd;
|
|
|
|
// Change sidedefs
|
|
if(front)
|
|
{
|
|
if(other.front != null) other.front.Dispose();
|
|
}
|
|
else
|
|
{
|
|
if(other.back != null) other.back.Dispose();
|
|
}
|
|
|
|
if(newside != null)
|
|
{
|
|
sd = map.CreateSidedef(other, front, newside.Sector);
|
|
newside.CopyPropertiesTo(sd);
|
|
sd.Marked = newside.Marked;
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region ================== Changes
|
|
|
|
// This updates all properties
|
|
public void Update(int flags, int tag, int action, byte[] args)
|
|
{
|
|
// Apply changes
|
|
this.flags = flags;
|
|
this.tag = tag;
|
|
this.action = action;
|
|
this.args = new byte[NUM_ARGS];
|
|
args.CopyTo(this.args, 0);
|
|
this.updateneeded = true;
|
|
}
|
|
|
|
#endregion
|
|
}
|
|
}
|