From eeb030dc7e7dd0b319de83446db6adb584c0ede4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Petr=20Mr=C3=A1zek?= <peterix@gmail.com>
Date: Wed, 17 Aug 2011 14:29:30 +0200
Subject: [PATCH] And don't designate over non-terrain tiles.

---
 plugins/vdig.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/plugins/vdig.cpp b/plugins/vdig.cpp
index 027511b1f..bdffb5629 100644
--- a/plugins/vdig.cpp
+++ b/plugins/vdig.cpp
@@ -415,6 +415,10 @@ DFhackCExport command_result expdig (Core * c, vector <string> & parameters)
                 if(tt == 0)
                     continue;
                 t_designation des = mx.designationAt(pos);
+                if(tileMaterial(tt) == CONSTRUCTED && !des.bits.hidden)
+                    continue;
+                if(!isWallTerrain(tt) && !des.bits.hidden)
+                    continue;
                 if(cross[y][x])
                 {
                     des.bits.dig = designation_default;