commit 31d8424332fc44411700e530c96e33cc8664a6ea
Author: BlockMen <nmuelll@web.de>
Date:   Mon Nov 25 17:22:54 2013 +0100

    Initial commit

diff --git a/README.txt b/README.txt
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+Minetest mod "Ruins"
+=========================
+version: 0.1 Beta
+
+License of source code: WTFPL
+-----------------------------
+(c) Copyright BlockMen (2013)
+
+This program is free software. It comes without any warranty, to
+the extent permitted by applicable law. You can redistribute it
+and/or modify it under the terms of the Do What The Fuck You Want
+To Public License, Version 2, as published by Sam Hocevar. See
+http://sam.zoy.org/wtfpl/COPYING for more details.
+
+
+Using the mod:
+--------------
+
+This mod adds randomly generated ruins in grass lands and forrests
diff --git a/depends.txt b/depends.txt
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+default
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diff --git a/init.lua b/init.lua
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+local function can_replace(pos)
+	local n = minetest.get_node_or_nil(pos)
+	if n and n.name and minetest.registered_nodes[n.name] and not minetest.registered_nodes[n.name].walkable then
+		return true
+	elseif not n then
+		return true
+	else
+		return false
+	end
+end
+
+
+local function ground(pos)
+	local p2 = pos
+	local cnt = 0
+	local mat = "dirt"
+	p2.y = p2.y-1
+	while can_replace(p2)==true do--minetest.get_node(p2).name == "air" do
+		cnt = cnt+1
+		if cnt > 200 then break end
+		if cnt>math.random(2,4) then mat = "stone"end
+		minetest.set_node(p2, {name="default:"..mat})
+		p2.y = p2.y-1
+	end
+end
+
+local function door(pos)
+	pos.y = pos.y+1
+	if math.random(0,1) > 0 then
+		if math.random(0,1)>0 then pos.x=pos.x+6 end
+		pos.z = pos.z + 3
+	else
+		if math.random(0,1)>0 then pos.z=pos.z+6 end
+		pos.x = pos.x + 3
+	end
+	minetest.remove_node(pos)
+	pos.y = pos.y+1
+	minetest.remove_node(pos)
+end
+
+local function make(pos)
+local material = "mossycobble"
+if math.random(1,10) > 8 then material = "wood" end
+ for yi = 0,4 do
+	for xi = 0,6 do
+		for zi = 0,6 do
+			if yi == 0 then
+				local p = {x=pos.x+xi, y=pos.y, z=pos.z+zi}
+				minetest.set_node(p, {name="default:cobble"})
+				minetest.after(1,ground,p)--(p)
+			else
+				if xi < 1 or xi > 5 or zi<1 or zi>5 then
+					if math.random(1,yi) == 1 then
+						local new = material
+						if yi == 2 and math.random(1,10) == 3 then new = "glass" end
+						local n = minetest.get_node_or_nil({x=pos.x+xi, y=pos.y+yi-1, z=pos.z+zi})
+						if n and n.name ~= "air" then
+							minetest.set_node({x=pos.x+xi, y=pos.y+yi, z=pos.z+zi}, {name="default:"..new})
+						end
+					end
+				else
+					minetest.remove_node({x=pos.x+xi, y=pos.y+yi, z=pos.z+zi})
+				end
+			end
+		end
+	end
+ end
+ door(pos)
+end
+
+
+
+local perl1 = {
+	SEED1 = 9130, -- Values should match minetest mapgen V6 desert noise.
+	OCTA1 = 3,
+	PERS1 = 0.5,
+	SCAL1 = 250,
+}
+
+local is_set = false
+local function set_seed(seed)
+	if not is_set then
+		math.randomseed(seed)
+		is_set = true
+	end
+end
+
+minetest.register_on_generated(function(minp, maxp, seed)
+
+	if maxp.y < 0 then return end
+	if math.random(0,10)<8 then return end
+	set_seed(seed)
+
+	local perlin1 = minetest.env:get_perlin(perl1.SEED1, perl1.OCTA1, perl1.PERS1, perl1.SCAL1)
+	local noise1 = perlin1:get2d({x=minp.x,y=minp.y})--,z=minp.z})
+	if noise1 < 0.36 or noise1 > -0.36 then
+		local mpos = {x=math.random(minp.x,maxp.x), y=math.random(minp.y,maxp.y), z=math.random(minp.z,maxp.z)}
+		minetest.after(0.5, function()
+		 p2 = minetest.find_node_near(mpos, 25, {"default:dirt_with_grass"})	
+		 if not p2 or p2 == nil or p2.y < 0 then return end
+		
+		  make(p2)
+		end)
+	end
+end)
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