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Fixed a bug where flipping a line resulted in a crash, if its start vertex did not belong to any other line

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boris_i 2009-06-28 14:47:21 +00:00
parent a42d9143e0
commit 6eb77d0bc0
1 changed files with 6 additions and 0 deletions
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6
Source/Core/Map/Linedef.cs
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@ -547,12 +547,18 @@ namespace CodeImp.DoomBuilder.Map
// 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;