From: PilzAdam <pilzadam@minetest.net>
Date: Mon, 15 Dec 2014 21:12:21 +0000 (+0100)
Subject: Don't override param2 bits that are not used for rotation in screwdriver
X-Git-Tag: 0.4.11~1
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=1237bc3a4b3c6f435059d669345446fa44768f32;p=oweals%2Fminetest_game.git

Don't override param2 bits that are not used for rotation in screwdriver
---

diff --git a/mods/screwdriver/init.lua b/mods/screwdriver/init.lua
index 49ea6156..6e3fe816 100644
--- a/mods/screwdriver/init.lua
+++ b/mods/screwdriver/init.lua
@@ -37,16 +37,18 @@ local function screwdriver_handler(itemstack, user, pointed_thing, mode)
 	end
 
 	-- Set param2
-	local n = node.param2
-	local axisdir = math.floor(n / 4)
-	local rotation = n - axisdir * 4
+	local rotationPart = node.param2 % 32 -- get first 4 bits
+	local preservePart = node.param2 - rotationPart
+
+	local axisdir = math.floor(rotationPart / 4)
+	local rotation = rotationPart - axisdir * 4
 	if mode == ROTATE_FACE then
-		n = axisdir * 4 + nextrange(rotation, 3)
+		rotationPart = axisdir * 4 + nextrange(rotation, 3)
 	elseif mode == ROTATE_AXIS then
-		n = nextrange(axisdir, 5) * 4
+		rotationPart = nextrange(axisdir, 5) * 4
 	end
 
-	node.param2 = n
+	node.param2 = preservePart + rotationPart
 	minetest.swap_node(pos, node)
 
 	if not minetest.setting_getbool("creative_mode") then