From 96f5a4351db8c9650cd3406de3f066f2847f0a73 Mon Sep 17 00:00:00 2001
From: ubq323 <ubq323@ubq323.website>
Date: Mon, 2 Jan 2023 02:46:41 +0000
Subject: shop

---
 shop2.lua | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/shop2.lua b/shop2.lua
index 40e0e59..aeb1b66 100644
--- a/shop2.lua
+++ b/shop2.lua
@@ -30,6 +30,11 @@ local function pad(s,n)
 	local p = string.rep(" ",math.max(0,n-l))
 	return p..s
 end
+local function centre(s,w)
+	s=tostring(s)
+	local l = #s
+	local p = math.floor(math.max(0,w-l)/2))
+	return string.rep(" ",p)..s
 
 local function disp_shopscreen()
 	local m = peripheral.wrap"left"
@@ -59,6 +64,12 @@ local function disp_shopscreen()
 		fmt_row(m,ix+2,i[5],i[2],i[1],i[4])
 	end
 
+	local w,h = m.getSize()
+
+	printseq(m) {
+		{1,h-1}, colors.blue, centre("/pay <adr>@ac.kst <amount>",w)
+	}
+
 		
 end
 
-- 
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