From c637dd4322971d49b86dab96580e665b8bfdfe1e Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Wed, 14 Sep 2022 18:01:26 +0200
Subject: [PATCH] line patterns:: 'triangle grid: rings' renamed to 'lines of
 equal distance' and also work better now

---
 pattern2.cpp | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/pattern2.cpp b/pattern2.cpp
index 8e126c78..d9fc6831 100644
--- a/pattern2.cpp
+++ b/pattern2.cpp
@@ -2852,12 +2852,20 @@ EX namespace linepatterns {
         }
       )
     );
-  EX linepattern patTriRings = linepattern("triangle grid: rings", 0xFFFFFF00, always_available, 
+  EX linepattern patTriRings = linepattern("lines of equal distance", 0xFFFFFF00, trees_known,
     ALLCELLS(
-      forCellIdEx(c2, i, c) {
-        if(S3 == 4) c2 = (cellwalker(c, i) + wstep + 1).cpeek();
-        if(c2 > c) if(curr_dist(c) == curr_dist(c2)) 
-          gridlinef(V, C0, V * currentmap->adj(c, i), C0, col, 2 + vid.linequality);
+      if(valence() == 3) {
+        forCellIdEx(c2, i, c) {
+          if(c2 > c) if(curr_dist(c) == curr_dist(c2))
+            gridlinef(V, C0, V * currentmap->adj(c, i), C0, col, 2 + vid.linequality);
+          }
+        }
+      else {
+        dynamicval<int> dmar(mine_adjacency_rule, 1);
+        int d = curr_dist(c);
+        for(auto p: adj_minefield_cells_full(c))
+          if(p.c < c && d == curr_dist(p.c))
+            gridlinef(V, C0, V, tC0(p.T), col, 2 + vid.linequality);
         }
       )
     );