Add optional bucket support for internal buffers

elepower_fapi/bucket.lua

@@ -0,0 +1,59 @@
+
+local b_enabled = minetest.get_modpath("bucket") ~= nil
+
+local function find_fluid(itemname)
+	for _,data in ipairs(bucket.liquids) do
+		if data.itemname and data.itemname == itemname then
+			return data.source
+		end
+	end
+	return nil
+end
+
+function elefluid.add_bucket_handler(nodedef)
+	if not b_enabled then return nodedef end
+
+	local orig = nodedef.on_rightclick
+	nodedef.on_rightclick = function (pos, node, clicker, itemstack, pointed_thing)
+		local bucket_name = itemstack:get_name()
+		local action = false
+
+		if bucket_name == "bucket:bucket_empty" then 
+			local buffers = elefluid.get_node_buffers(pos)
+			for buffer in pairs(buffers) do
+				if elefluid.can_take_from_buffer(pos, buffer, 1000) == 1000 then
+					local fluid = elefluid.take_from_buffer(pos, buffer, 1000)
+					if bucket.liquids[fluid] then
+						itemstack = ItemStack(bucket.liquids[fluid].itemname)
+						action = true
+					end
+					break
+				end
+			end
+		elseif find_fluid(bucket_name) then
+			local fluid   = find_fluid(bucket)
+			local buffers = elefluid.get_node_buffers(pos)
+			for buffer in pairs(buffers) do
+				if elefluid.can_insert_into_buffer(pos, buffer, fluid, 1000) == 1000 then
+					elefluid.insert_into_buffer(pos, buffer, fluid, 1000)
+					itemstack = ItemStack("bucket:bucket_empty")
+					action = true
+					break
+				end
+			end
+		end
+
+		-- Really stupid workaround so that the formspec closes after a bucket action was committed
+		if action and not orig and clicker then
+			minetest.close_formspec(clicker:get_player_name(), "")
+		end
+
+		if orig then
+			return orig(pos, node, clicker, itemstack, pointed_thing)
+		end
+
+		return itemstack
+	end
+
+	return nodedef
+end

elepower_fapi/buffer.lua

@@ -33,6 +33,7 @@ function elefluid.get_buffer_data(pos, buffer)
 	local amount    = meta:get_int(buffer .. "_fluid_storage")
 	local capacity  = buffers[buffer].capacity
 	local accepts   = buffers[buffer].accepts
+	local drainable = buffers[buffer].drainable or true
 
 	-- Fluidity tanks compatibility
 	if buffer == "fluidity" then
@@ -40,8 +41,9 @@ function elefluid.get_buffer_data(pos, buffer)
 
 		fluid     = ffluid
 		amount    = fluidcount
-		accepts  = true
 		capacity  = fcapacity
+		accepts   = true
+		drainable = true
 	end
 
 	return {
@@ -49,6 +51,7 @@ function elefluid.get_buffer_data(pos, buffer)
 		amount    = amount,
 		accepts   = accepts,
 		capacity  = capacity,
+		drainable = drainable,
 	}
 end
 
@@ -81,8 +84,8 @@ end
 
 function elefluid.can_insert_into_buffer(pos, buffer, fluid, count)
 	local bfdata = elefluid.get_buffer_data(pos, buffer)
-	if not bfdata then return nil end
+	if not bfdata then return 0 end
-	if bfdata.fluid ~= fluid and bfdata.fluid ~= "" then return nil end
+	if bfdata.fluid ~= fluid and bfdata.fluid ~= "" then return 0 end
 
 	local can_put = 0
 	if bfdata.amount + count > bfdata.capacity then
@@ -116,7 +119,7 @@ end
 
 function elefluid.can_take_from_buffer(pos, buffer, count)
 	local bfdata = elefluid.get_buffer_data(pos, buffer)
-	if not bfdata then return nil end
+	if not bfdata or not bfdata.drainable then return 0 end
 
 	local amount = bfdata.amount
 	local take_count = 0

elepower_fapi/init.lua

@@ -13,3 +13,4 @@ dofile(modpath.."/transfer.lua")
 dofile(modpath.."/transfer_node.lua")
 dofile(modpath.."/formspec.lua")
 dofile(modpath.."/buffer.lua")
+dofile(modpath.."/bucket.lua")

elepower_fapi/mod.conf

@@ -1,4 +1,4 @@
 name = elepower_fapi
 description = Elepower Fluid Transfer API
 depends = elepower_papi
-optional_depends = fluidity
+optional_depends = fluidity,bucket

elepower_farming/nodes/tree_extractor.lua

@@ -9,7 +9,7 @@ local fluid_table = {
 	["default:aspen_tree"]  = { fpc = 50,  fluid = "elepower_farming:resin_source" },
 }
 
-minetest.register_node("elepower_farming:tree_extractor", {
+minetest.register_node("elepower_farming:tree_extractor", elefluid.add_bucket_handler({
 	description = "Tree Fluid Extractor",
 	groups = {fluid_container = 1, oddly_breakable_by_hand = 1, cracky = 1},
 	tiles = {
@@ -23,7 +23,7 @@ minetest.register_node("elepower_farming:tree_extractor", {
 		}
 	},
 	paramtype2 = "facedir"
-})
+}))
 
 minetest.register_abm({
 	nodenames = {"elepower_farming:tree_extractor"},

elepower_farming/nodes/tree_processor.lua

@@ -131,11 +131,13 @@ ele.register_machine("elepower_farming:tree_processor", {
 	fluid_buffers = {
 		tree = {
 			capacity  = 8000,
-			accepts  = {"group:tree_fluid"}
+			accepts   = {"group:tree_fluid"},
+			drainable = false,
 		},
 		water = {
 			capacity  = 8000,
-			accepts  = {"default:water_source"}
+			accepts   = {"default:water_source"},
+			drainable = false,
 		},
 		output = {
 			capacity = 8000