From a83c910cc77fae62b6a993dadd8f60da6221bdc7 Mon Sep 17 00:00:00 2001
From: setop <setop@zoocoop.com>
Date: Sun, 1 Jan 2023 19:45:07 +0100
Subject: [PATCH] day 10, part 2, no need to buffer, spare 6 loc

---
 d10/part2.awk | 20 +++++++-------------
 1 file changed, 7 insertions(+), 13 deletions(-)

diff --git a/d10/part2.awk b/d10/part2.awk
index a58678f..15563de 100644
--- a/d10/part2.awk
+++ b/d10/part2.awk
@@ -1,20 +1,14 @@
-BEGIN { x=1 }
 function inc() {
-  i = (c%40)
-	A[c+1] = (i==x-1||i==x||i==x+1) ? "█" : "░"
-	c+=1
+	i = (c%40)
+	r = r ((i==x||i==x+1||i==x+2) ? "█" : " ")
+	if (i == 39) {
+		print r
+		r = ""
+	}
+	c++
 }
 { inc() }
 $1 == "addx" {
 	inc()
 	x+=$2
 }
-END {
-	for (i=0;i<=5;i++) {
-		r = ""
-		for (j=1;j<=40;j++) {
-			r = r A[i*40+j]
-		}
-		print r
-	}
-}
\ No newline at end of file