From 9777a259e0cf73cdc0a7a2a4984f257ef1d9c582 Mon Sep 17 00:00:00 2001
From: flux <25628292+fluxionary@users.noreply.github.com>
Date: Sun, 19 Feb 2023 15:34:01 -0800
Subject: [PATCH] add option to disable printing inside a luacontroller

---
 mesecons_luacontroller/init.lua | 12 +++++++-----
 settingtypes.txt                |  4 ++++
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua
index 2eba817..72bee24 100644
--- a/mesecons_luacontroller/init.lua
+++ b/mesecons_luacontroller/init.lua
@@ -203,11 +203,13 @@ end
 -------------------------
 
 local function safe_print(param)
-	local string_meta = getmetatable("")
-	local sandbox = string_meta.__index
-	string_meta.__index = string -- Leave string sandbox temporarily
-	print(dump(param))
-	string_meta.__index = sandbox -- Restore string sandbox
+	if mesecon.setting("luacontroller_print_behavior", "log") == "log" then
+		local string_meta = getmetatable("")
+		local sandbox = string_meta.__index
+		string_meta.__index = string -- Leave string sandbox temporarily
+		minetest.log("action", string.format("[mesecons_luacontroller] print(%s)", dump(param)))
+		string_meta.__index = sandbox -- Restore string sandbox
+	end
 end
 
 local function safe_date()
diff --git a/settingtypes.txt b/settingtypes.txt
index 5627440..aebbfaa 100644
--- a/settingtypes.txt
+++ b/settingtypes.txt
@@ -28,6 +28,10 @@ mesecon.luacontroller_memsize (Controller memory limit) int 100000 10000 1000000
 # IID is ignored and at most one interrupt may be queued if this setting is enabled.
 mesecon.luacontroller_lightweight_interrupts (Lightweight interrupts) bool false
 
+# behavior of "print" inside a luacontroller. by default, this emits a message into debug.txt.
+# set it to noop if you wish to disable that behavior.
+mesecon.luacontroller_print_behavior (behavior of print) enum log log,noop
+
 [mesecons_mvps]
 
 # In pre-existing world, MVPS may not be labelled with the owner.