From e39493e789d77f98af4cdc17de21ca1ef0547571 Mon Sep 17 00:00:00 2001
From: sfan5 <sfan5@live.de>
Date: Sun, 19 Aug 2012 09:36:11 +0200
Subject: Add //spiral and worldedit.spiral API function

---
 functions.lua | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

(limited to 'functions.lua')

diff --git a/functions.lua b/functions.lua
index 270b50e..ee549de 100644
--- a/functions.lua
+++ b/functions.lua
@@ -1,3 +1,4 @@
+dofile(minetest.get_modpath("worldedit") .. "/spirals.lua")
 --modifies positions `pos1` and `pos2` so that each component of `pos1` is less than or equal to its corresponding conent of `pos2`, returning two new positions
 worldedit.sort_pos = function(pos1, pos2)
 	pos1 = {x=pos1.x, y=pos1.y, z=pos1.z}
@@ -182,6 +183,26 @@ worldedit.cylinder = function(pos, axis, length, radius, nodename)
 	return count
 end
 
+--adds a spiral at `pos` with size `size`, returning the number of nodes changed
+worldedit.spiral = function(pos, size, nodename)
+    local shift_x,shift_y
+	sa = spiralt(size)
+    shift_y = #sa -- "Height" of the Array
+    local fe = sa[1]
+    shift_x = #fe -- "Width" of the Array
+    fe = nil
+    
+    local count = 0
+    for x,v in ipairs(sa) do
+        for y, z in ipairs(v) do
+            minetest.env:add_node({x=pos.x-shift_x+x,y=pos.y-shift_y+y,z=pos.z+z}, {name=nodename})
+            count = count + 1
+        end
+    end
+	
+	return count
+end
+
 --copies the region defined by positions `pos1` and `pos2` along the `axis` axis ("x" or "y" or "z") by `amount` nodes, returning the number of nodes copied
 worldedit.copy = function(pos1, pos2, axis, amount)
 	local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
@@ -476,4 +497,4 @@ worldedit.deserialize_old = function(originpos, value)
 		count = count + 1
 	end
 	return count
-end
\ No newline at end of file
+end
-- 
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