From a8ceb21d34bac8227acf7be4dc8c87f404c40555 Mon Sep 17 00:00:00 2001
From: June McEnroe <june@causal.agency>
Date: Thu, 8 Dec 2022 13:17:33 -0500
Subject: Solve day 8 part 2

---
 2022/day08.awk | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/2022/day08.awk b/2022/day08.awk
index 35505e4..3ce1a50 100644
--- a/2022/day08.awk
+++ b/2022/day08.awk
@@ -19,6 +19,28 @@ function visible(x, y) {
 	if (yy > bottom) return 1;
 	return 0;
 }
+function view(x, y) {
+	if (x == 1 || x == right) return 0;
+	if (y == 1 || y == bottom) return 0;
+	v = 1;
+	for (xx = x-1; xx > 1; --xx) {
+		if (m[xx,y] >= m[x,y]) break;
+	}
+	v *= x-xx;
+	for (xx = x+1; xx < right; ++xx) {
+		if (m[xx,y] >= m[x,y]) break;
+	}
+	v *= xx-x;
+	for (yy = y-1; yy > 1; --yy) {
+		if (m[x,yy] >= m[x,y]) break;
+	}
+	v *= y-yy;
+	for (yy = y+1; yy < bottom; ++yy) {
+		if (m[x,yy] >= m[x,y]) break;
+	}
+	v *= yy-y;
+	return v;
+}
 BEGIN {
 	FS = "";
 }
@@ -33,7 +55,9 @@ END {
 	for (x = 1; x <= right; ++x) {
 		for (y = 1; y <= bottom; ++y) {
 			if (visible(x, y)) vis++;
+			if (view(x, y) > max) max = view(x, y);
 		}
 	}
 	print vis;
+	print max;
 }
-- 
cgit 1.4.1