From a17445bee751f0d8fffb8d67c04d4dc3feebae49 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Fri, 6 Apr 2018 23:28:58 +0200
Subject: [PATCH] improved insightrange

---
 cell.cpp  | 17 +++++++++++++++++
 graph.cpp |  4 +++-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/cell.cpp b/cell.cpp
index 65134736..878d493b 100644
--- a/cell.cpp
+++ b/cell.cpp
@@ -1344,6 +1344,23 @@ cell *heptatdir(cell *c, int d) {
   else return createMov(c, d);
   }
 
+int heptdistance(heptagon *h1, heptagon *h2) {
+  // very rough distance
+  int d = 0;
+  while(true) {
+    if(h1 == h2) return d;
+    for(int i=0; i<S7; i++) if(h1->move[i] == h2) return d + 1;
+    int d1 = h1->distance, d2 = h2->distance;
+    if(d1 >= d2) d++, h1 = h1->move[0];
+    if(d2 >= d1) d++, h2 = h2->move[0];
+    }
+  }
+
+int heptdistance(cell *c1, cell *c2) {
+  if(!hyperbolic || quotient) return celldistance(c1, c2);
+  else return heptdistance(c1->master, c2->master);
+  }
+
 int celldistance(cell *c1, cell *c2) {
   int d = 0;
   
diff --git a/graph.cpp b/graph.cpp
index 8b01fe7f..ef567a86 100644
--- a/graph.cpp
+++ b/graph.cpp
@@ -5925,6 +5925,8 @@ cell *viewcenter() {
   }
 
 bool inscreenrange(cell *c) {
-  return celldistance(viewcenter(), c) <= (euclid ? get_sightrange() : nonbitrunc ? 9 : 13);
+  if(sphere) return true;
+  if(euclid) return celldistance(viewcenter(), c) <= get_sightrange();
+  return heptdistance(viewcenter(), c) <= 5;
   }