Add a box wagon

Alongside with coding wagon inventories, and several bugfixes

1 files changed, 24 insertions, 1 deletions

diff --git a/helpers.lua b/helpers.lua
index ef3752a..6a8175f 100644
--- a/helpers.lua
+++ b/helpers.lua
@@ -223,4 +223,27 @@ function advtrains.pos_median(pos1, pos2)
 end

 function advtrains.abs_ceil(i)

 	return math.ceil(math.abs(i))*math.sign(i)

-end
\ No newline at end of file
+end

+

+function advtrains.serialize_inventory(inv)

+	local ser={}

+	local liszts=inv:get_lists()

+	for lisztname, liszt in pairs(liszts) do

+		ser[lisztname]={}

+		for idx, item in ipairs(liszt) do

+			local istring=item:to_string()

+			if istring~="" then

+				ser[lisztname][idx]=istring

+			end

+		end

+	end

+	return minetest.serialize(ser)

+end

+function advtrains.deserialize_inventory(sers, inv)

+	local ser=minetest.deserialize(sers)

+	if ser then

+		inv:set_lists(ser)

+		return true

+	end

+	return false

+end