From 8337a6c192b9961f8947767690c13951696c3c1e Mon Sep 17 00:00:00 2001
From: Calinou <calinou@opmbx.org>
Date: Sun, 9 Mar 2014 10:38:18 +0100
Subject: Merge ShadowNinja's rewrite.

---
 stairsplus/conversion.lua | 132 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 stairsplus/conversion.lua

(limited to 'stairsplus/conversion.lua')

diff --git a/stairsplus/conversion.lua b/stairsplus/conversion.lua
new file mode 100644
index 0000000..d3f7988
--- /dev/null
+++ b/stairsplus/conversion.lua
@@ -0,0 +1,132 @@
+-- Function to convert all stairs/slabs/etc nodes from
+-- inverted, wall, etc to regular + 6d facedir
+
+local dirs1 = {21, 20, 23, 22, 21}
+local dirs2 = {15, 8, 17, 6, 15}
+local dirs3 = {14, 11, 16, 5, 14}
+
+function stairsplus:register_6dfacedir_conversion(modname, material)
+	--print("Register stairsplus 6d facedir conversion")
+	--print('ABM for '..modname..' "'..material..'"')
+
+	local objects_list1 = {
+		modname..":slab_"..material.."_inverted",
+		modname..":slab_"..material.."_quarter_inverted",
+		modname..":slab_"..material.."_three_quarter_inverted",
+		modname..":stair_"..material.."_inverted",
+		modname..":stair_"..material.."_wall",
+		modname..":stair_"..material.."_wall_half",
+		modname..":stair_"..material.."_wall_half_inverted",
+		modname..":stair_"..material.."_half_inverted",
+		modname..":stair_"..material.."_right_half_inverted",
+		modname..":panel_"..material.."_vertical",
+		modname..":panel_"..material.."_top",
+	}
+
+	local objects_list2 = {
+		modname..":slab_"..material.."_wall",
+		modname..":slab_"..material.."_quarter_wall",
+		modname..":slab_"..material.."_three_quarter_wall",
+		modname..":stair_"..material.."_inner_inverted",
+		modname..":stair_"..material.."_outer_inverted",
+		modname..":micro_"..material.."_top"
+	}
+
+	for _, object in pairs(objects_list1) do
+		local flip_upside_down = false
+		local flip_to_wall = false
+
+		local dest_object = object
+
+		if string.find(dest_object, "_inverted") then
+			flip_upside_down = true
+			dest_object = string.gsub(dest_object, "_inverted", "")
+		end
+
+		if string.find(object, "_top") then
+			flip_upside_down = true
+			dest_object = string.gsub(dest_object, "_top", "")
+		end
+
+		if string.find(dest_object, "_wall") then
+			flip_to_wall = true
+			dest_object = string.gsub(dest_object, "_wall", "")
+		end
+
+		if string.find(dest_object, "_vertical") then
+			flip_to_wall = true
+			dest_object = string.gsub(dest_object, "_vertical", "")
+		end
+
+		if string.find(dest_object, "_half") and not string.find(dest_object, "_right_half") then
+			dest_object = string.gsub(dest_object, "_half", "_right_half")
+		elseif string.find(dest_object, "_right_half") then
+			dest_object = string.gsub(dest_object, "_right_half", "_half")
+		end
+
+		--print("    +---> convert "..object)
+		--print("    |     to "..dest_object)
+
+		minetest.register_abm({
+			nodenames = {object},
+			interval = 1,
+			chance = 1,
+			action = function(pos, node, active_object_count, active_object_count_wider)
+				local fdir = node.param2 or 0
+
+				if flip_upside_down and not flip_to_wall then 
+					nfdir = dirs1[fdir + 2]
+				elseif flip_to_wall and not flip_upside_down then
+					nfdir = dirs2[fdir + 1]
+				elseif flip_to_wall and flip_upside_down then
+					nfdir = dirs3[fdir + 2]
+				end
+				minetest.set_node(pos, {name = dest_object, param2 = nfdir})
+			end
+		})
+	end
+
+	for _, object in pairs(objects_list2) do
+		local flip_upside_down = false
+		local flip_to_wall = false
+
+		local dest_object = object
+
+		if string.find(dest_object, "_inverted") then
+			flip_upside_down = true
+			dest_object = string.gsub(dest_object, "_inverted", "")
+		end
+
+		if string.find(dest_object, "_top") then
+			flip_upside_down = true
+			dest_object = string.gsub(dest_object, "_top", "")
+		end
+
+		if string.find(dest_object, "_wall") then
+			flip_to_wall = true
+			dest_object = string.gsub(dest_object, "_wall", "")
+		end
+
+		--print("    +---> convert "..object)
+		--print("    |     to "..dest_object)
+
+		minetest.register_abm({
+			nodenames = {object},
+			interval = 1,
+			chance = 1,
+			action = function(pos, node, active_object_count, active_object_count_wider)
+				local fdir = node.param2
+				local nfdir = 20
+
+				if flip_upside_down and not flip_to_wall then 
+					nfdir = dirs1[fdir + 1]
+				elseif flip_to_wall and not flip_upside_down then
+					nfdir = dirs2[fdir + 2]
+
+				end
+				minetest.set_node(pos, {name = dest_object, param2 = nfdir})
+			end
+		})
+	end
+end
+
-- 
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