1 files changed, 3 insertions, 16 deletions
diff --git a/src/2022/day15/aoc.h b/src/2022/day15/aoc.h
index b35c85b..87c3208 100644
--- a/src/2022/day15/aoc.h
+++ b/src/2022/day15/aoc.h
@@ -1,5 +1,6 @@
 #include "common.h"
 #include <vector>
+#include <set>
 
 namespace aoc2022 {
 
@@ -30,6 +31,7 @@ struct sensor {
 
   static int minx;
   static int maxx;
+  static std::set<pos> beacons;
 
   pos ps[2] = {{0,0},{0,0}};
 
@@ -56,22 +58,6 @@ struct sensor {
     printf("S(%d, %d) B(%d, %d)\n", ps[0].x, ps[0].y, ps[1].x, ps[1].y);
   }
 
-  bool inscope(pos p) {
-    auto d1 = mdistance(ps[0], ps[1]);
-    auto d2 = mdistance(ps[0], p);
-    return d2 <= d1;
-  }
-
-  line line_by_dy(int dy) {
-    int d = mdistance(ps[0], ps[1]);
-    int y = ps[0].y + dy; 
-    int dx = d - std::abs(dy);
-    int x = ps[0].x - dx;
-    pos p0 = {x, y};
-    pos p1 = {x + 2 * dx, y};
-    return {p0 , p1};
-  }
-
   sensor(line_view lv) {
     const char* p = lv.line;
     int *is[] = {&ps[0].x, &ps[0].y, &ps[1].x, &ps[1].y};
@@ -85,6 +71,7 @@ struct sensor {
       }
       p++;
     }
+    beacons.insert(ps[1]);
     auto x1 = ps[0].x - mdistance(ps[0], ps[1]);
     auto x2 = ps[0].x + mdistance(ps[0], ps[1]);
     if (minx > x1) minx = x1;