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Fixed: SplitLinesByVertices could leave disposed lines for iteration, which resulted in crashes on certain geometry while using 'Replace with Dragged Geometry'.

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ZZYZX 2017-02-20 09:13:35 +02:00 committed by spherallic
parent 03a1d26302
commit 12ea1aa313
1 changed files with 23 additions and 13 deletions
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14
Source/Core/Map/MapSet.cs
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@ -2107,7 +2107,7 @@ namespace CodeImp.DoomBuilder.Map
return false;
// Split non-moving lines with selected vertices
fixedlines = FilterByArea(fixedlines, ref editarea);
fixedlines = new HashSet<Linedef>(fixedlines.Where(fixedline => !fixedline.IsDisposed));
if(!SplitLinesByVertices(fixedlines, movingverts, STITCH_DISTANCE, movinglines, mergemode))
return false;
@ -2352,6 +2352,8 @@ namespace CodeImp.DoomBuilder.Map
{
LinedefSide ls = edges[i];
if (ls.Ignore || ls.Line == null) continue;
if (ls.Line.Start == null || ls.Line.End == null)
throw new Exception("ls line is null");
if(ls.Front)
{
@ -3077,11 +3079,19 @@ namespace CodeImp.DoomBuilder.Map
}
}
// [ZZ] note: disposing a vertex means also disposing all attached linedefs!
// we need to iterate through our lines collection and make sure no disposed linedefs exist there.
// also, just in case, do it for vertices as well, because vertices can be chain-disposed.
foreach (Linedef line in lines.Where(line => line.IsDisposed).ToList())
while (lines.Remove(line));
foreach (Vertex vert in verts.Where(vert => vert.IsDisposed).ToList())
while (verts.Remove(vert));
return true;
}
/// <summary>Splits lines by lines. Adds new lines to the second collection. Returns false when the operation failed.</summary>
public static bool SplitLinesByLines(HashSet<Linedef> lines, HashSet<Linedef> changedlines, MergeGeometryMode mergemode) //mxd
public static bool SplitLinesByLines(ICollection<Linedef> lines, HashSet<Linedef> changedlines, MergeGeometryMode mergemode) //mxd
{
if(lines.Count == 0 || changedlines.Count == 0 || mergemode == MergeGeometryMode.CLASSIC) return true;