Fix negative cylinder lengths (thanks @cornernote).

1 files changed, 12 insertions, 2 deletions

diff --git a/functions.lua b/functions.lua
index 2d16daf..eaac5d6 100644
--- a/functions.lua
+++ b/functions.lua
@@ -90,6 +90,11 @@ worldedit.hollow_cylinder = function(pos, axis, length, radius, nodename)
 	local currentpos = {x=pos.x, y=pos.y, z=pos.z}

 	local node = {name=nodename}

 	local count = 0

+	local step = 1

+	if length < 0

+		length = -length

+		step = -1

+	end

 	for i = 1, length do

 		local offset1, offset2 = 0, radius

 		local delta = -radius

@@ -126,7 +131,7 @@ worldedit.hollow_cylinder = function(pos, axis, length, radius, nodename)
 			end

 			offset1 = offset1 + 1

 		end

-		currentpos[axis] = currentpos[axis] + 1

+		currentpos[axis] = currentpos[axis] + step

 	end

 	return count

 end

@@ -146,6 +151,11 @@ worldedit.cylinder = function(pos, axis, length, radius, nodename)
 	local currentpos = {x=pos.x, y=pos.y, z=pos.z}

 	local node = {name=nodename}

 	local count = 0

+	local step = 1

+	if length < 0

+		length = -length

+		step = -1

+	end

 	for i = 1, length do

 		local offset1, offset2 = 0, radius

 		local delta = -radius

@@ -180,7 +190,7 @@ worldedit.cylinder = function(pos, axis, length, radius, nodename)
 				delta = delta - (offset2 * 2)

 			end

 		end

-		currentpos[axis] = currentpos[axis] + 1

+		currentpos[axis] = currentpos[axis] + step

 	end

 	return count

 end