From f2ac5f9dd6ba517edb87e777d94a7699426f2c8b Mon Sep 17 00:00:00 2001
From: adrido <robots_only_adrido@gmx.com>
Date: Sun, 21 Dec 2014 10:50:12 +0100
Subject: [PATCH] convert old nodes to the new meshnodes

---
 convert.lua | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 init.lua    |  6 ++++++
 2 files changed, 56 insertions(+)
 create mode 100644 convert.lua

diff --git a/convert.lua b/convert.lua
new file mode 100644
index 0000000..039fb7f
--- /dev/null
+++ b/convert.lua
@@ -0,0 +1,50 @@
+minetest.register_abm({
+	nodenames = {"cannons:cannon","cannons:bronze_canon","cannons:mithril_cannon"},
+	--neighbors = {"cannons:stand","cannons.stand_wood"},
+	interval = 1.0,
+	chance = 1,
+	action = function(pos, node, active_object_count, active_object_count_wider)
+		local stand_pos = {x= pos.x,y= pos.y-1,z=pos.z}
+		local stand = minetest.get_node(stand_pos)
+		if stand.name == "cannons:stand" or stand.name == "cannons:stand_wood" then -- cannon stand with cannon
+			if stand.name == "cannons:stand" then
+				minetest.set_node(stand_pos, {name = "default:cobble"})--replace stand with cobblestone
+			else
+				minetest.set_node(stand_pos, {name = "default:wood"})--replace stand with cobblestone
+			end
+			if node.name == "cannons:cannon" then 
+				node.name = "cannons:wood_stand_with_cannon_steel"
+			elseif node.name == "cannons:bronze_canon" then
+				node.name = "cannons:wood_stand_with_cannon_bronze"
+			elseif node.name == "cannons:mithril_cannon" then
+				node.name = "cannons:wood_stand_with_cannon_mithril"
+			--else if node.name == "cannons:bronze_canon" then
+			--	node.name = "cannons:wood_stand_with_bronze_cannon"
+			else --dont know what else can happen, but "Der Teufel ist ein Eichhörnchen"
+				node.name = "air"
+			end
+			
+			minetest.swap_node(pos, node)
+			
+		else --else its a single or disabled cannon
+			print("zweite if")
+			if node.name == "cannons:cannon" then 
+				node.name = "cannons:cannon_steel"
+			elseif node.name == "cannons:canon_bronze" then
+				node.name = "cannons:bronze_cannon"
+			elseif node.name == "cannons:cannon_mithril" then
+				node.name = "cannons:cannon_mithril"
+			--else if node.name == "cannons:bronze_canon" then
+			--	node.name = "cannons:wood_stand_with_bronze_cannon"
+			else --dont know what else can happen, but "Der Teufel ist ein Eichhörnchen"
+				node.name = "air"
+			end
+			minetest.swap_node(pos, node)
+		end
+	end,
+})
+
+--abm to clean single cannonstands
+--minetest.register_alias("name", "convert_to")
+minetest.register_alias("cannons:stand", "default:cobble")
+minetest.register_alias("cannons:stand_wood", "default:wood")
\ No newline at end of file
diff --git a/init.lua b/init.lua
index d6386e9..92c7cfc 100644
--- a/init.lua
+++ b/init.lua
@@ -12,6 +12,7 @@ local conf_table = cannons.config:to_table()
 local defaults = {
 enable_explosion = "true",
 enable_fire = "true",
+convert_old_nodes = "true",
 }
 
 for k, v in pairs(defaults) do
@@ -20,11 +21,16 @@ cannons.config:set(k, v)
 end
 end
 
+
 dofile(cannons.MODPATH .."/print_r.lua")
 dofile(cannons.MODPATH .."/functions.lua")
 dofile(cannons.MODPATH .."/items.lua")
 dofile(cannons.MODPATH .."/cannonballs.lua")
 
+if cannons.config:get("convert_old_nodes")=="true" then
+	dofile(cannons.MODPATH .."/convert.lua")
+end
+
 if minetest.get_modpath("locks") ~=nil then
 minetest.log("warning","locks mod enabled. dont execute locks.lua because this is an unstable beta version!")
 	--dofile(cannons.MODPATH .."/locks.lua")--if the locks mod is installed execute this file