--[[ NEED:

textures: 
	oil shale
	crushed oil shale

node defs:
	(tweak) oil shale

craftitem:
	crushed oil shale

ore reg:
	(tweak) oil shale

grinder recipe:
	oil shale -> crushed oil shale

extractor recipe:
	crushed oil shale -> bitumen

]]


 -- need to get the info for stone-type things
minetest.register_node( "bitumen:tar_sand", {
	description = "Tar Sand",
	tiles = { "default_sand.png^[colorize:black:180" },
	is_ground_content = true,
	groups = {crumbly=2, bitumen_mineral = 1, falling_node=1},
	sounds = default.node_sound_sand_defaults(),
}) 
minetest.register_node( "bitumen:oil_shale", {
	description = "Oil Shale",
	tiles = { "default_stone.png^[colorize:black:180" },
	is_ground_content = true,
	groups = {cracky=2, bitumen_mineral = 1},
	sounds = default.node_sound_stone_defaults(),
}) 
	






local function swap_node(pos, name)
	local node = minetest.get_node(pos)
	if node.name == name then
		return
	end
	node.name = name
	minetest.swap_node(pos, node)
end





--[[
local function grab_fuel(inv)
	
	local list = inv:get_list("fuel")
	for i,st in ipairs(list) do
	print(st:get_name())
		local fuel, remains
		fuel, remains = minetest.get_craft_result({
			method = "fuel", 
			width = 1, 
			items = {
				ItemStack(st:get_name())
			},
		})

		if fuel.time > 0 then
			-- Take fuel from fuel list
			st:take_item()
			inv:set_stack("fuel", i, st)
			
			return fuel.time
		end
	end
	
	return 0 -- no fuel found
end

]]

bitumen.register_burner({"bitumen:mineral_oil_furnace_on"}, {
	start_cook = function(pos) 
		local up = {x=pos.x, y=pos.y + 1, z=pos.z}
		local meta = minetest.get_meta(up)
		local inv = meta:get_inventory()
		
		local item = inv:remove_item("main", "bitumen:tar_sand 1")
		if item == nil or item:get_count() <= 0 then
			item = inv:remove_item("main", "bitumen:oil_shale 1")
			if item == nil or item:get_count() <= 0 then
				print("no minerals")
				return 0 -- no minerals to melt
			end
			
			return 6 -- oil shale takes longer
		end
		
		return 4 
	end,
	finish_cook = function(pos) 
		local node   = minetest.get_node(pos)
		
		local back_dir = minetest.facedir_to_dir(node.param2)
		local backpos = vector.add(pos, back_dir) 
		local backnet = bitumen.pipes.get_net(backpos)
		if backnet == nil then
			print("mineral furnace no backnet at "..minetest.pos_to_string(backpos))
			return
		end
		
		local pushed = bitumen.pipes.push_fluid(backpos, "bitumen:crude_oil", 32, 2)
		
	end,
	get_formspec_on = get_melter_active_formspec,
	turn_off = function(pos)
		swap_node(pos, "bitumen:mineral_oil_furnace")
	end,
})


minetest.register_node("bitumen:mineral_oil_furnace", {
	description = "Mineral Deposit Furnace",
	tiles = {
		"default_bronze_block.png", "default_bronze_block.png",
		"default_bronze_block.png", "default_bronze_block.png",
		"default_bronze_block.png", "default_furnace_front.png",
	},
	paramtype2 = "facedir",
	groups = {cracky=2, petroleum_fixture=1},
	is_ground_content = false,
	on_place = minetest.rotate_node,
	sounds = default.node_sound_stone_defaults(),
	--can_dig = can_dig,

	on_construct = function(pos)
		local meta = minetest.get_meta(pos)
		meta:set_string("formspec", bitumen.get_melter_active_formspec())
		local inv = meta:get_inventory()
		inv:set_size('fuel', 4)
		
		minetest.get_node_timer(pos):start(1.0)
		
	end,
	
	on_punch = function(pos)
		swap_node(pos, "bitumen:mineral_oil_furnace_on")
		minetest.get_node_timer(pos):start(1.0)
	end,
})

minetest.register_node("bitumen:mineral_oil_furnace_on", {
	description = "Mineral Deposit Furnace (Active)",
	tiles = {
		"default_bronze_block.png", "default_bronze_block.png",
		"default_bronze_block.png", "default_bronze_block.png",
		"default_bronze_block.png", {
			image = "default_furnace_front_active.png",
			backface_culling = false,
			animation = {
				type = "vertical_frames",
				aspect_w = 16,
				aspect_h = 16,
				length = 1.5
			},
		}
	},
	paramtype2 = "facedir",
	groups = {cracky=2, petroleum_fixture=1},
	is_ground_content = false,
	on_place = minetest.rotate_node,
	sounds = default.node_sound_stone_defaults(),
	--can_dig = can_dig,
	
	on_timer = bitumen.burner_on_timer,

	on_construct = function(pos)
		local meta = minetest.get_meta(pos)
		meta:set_string("formspec", bitumen.get_melter_active_formspec())
		local inv = meta:get_inventory()
		inv:set_size('fuel', 4)
		
		minetest.get_node_timer(pos):start(1.0)
		
	end,
	
	on_punch = function(pos)
		swap_node(pos, "bitumen:mineral_oil_furnace")
		minetest.get_node_timer(pos):start(1.0)
	end,
})





bitumen.register_blueprint({name="bitumen:mineral_oil_furnace"})






--[[



bitumen.register_burner({"bitumen:engine_on"}, {
	start_cook = function() 
		print("starting-") 
		return 8 
	end,
	finish_cook = function() 
		print("ending-") 
	end,
	get_formspec_on = get_melter_active_formspec,
})

minetest.register_node("bitumen:engine", {
	description = "Engine",
	tiles = {
		"default_bronze_block.png", "default_bronze_block.png",
		"default_bronze_block.png", "default_bronze_block.png",
		"default_bronze_block.png", "default_furnace_front.png",
	},
	paramtype2 = "facedir",
	groups = {cracky=2, petroleum_fixture=1},
	is_ground_content = false,
	sounds = default.node_sound_stone_defaults(),
	--can_dig = can_dig,
	
	--on_timer = burner_on_timer,

	on_construct = function(pos)
		local meta = minetest.get_meta(pos)
		meta:set_string("formspec", get_melter_active_formspec())
		local inv = meta:get_inventory()
		inv:set_size('fuel', 4)
		
		minetest.get_node_timer(pos):start(1.0)
		
	end,

-- 	on_metadata_inventory_move = function(pos)
-- 		minetest.get_node_timer(pos):start(1.0)
-- 	end,
-- 	on_metadata_inventory_put = function(pos)
-- 		-- start timer function, it will sort out whether furnace can burn or not.
-- 		minetest.get_node_timer(pos):start(1.0)
-- 	end,
-- 	
	
	on_punch = function(pos)
		swap_node(pos, "bitumen:engine_on")
		minetest.get_node_timer(pos):start(1.0)
	end,
	
	
-- 	on_blast = function(pos)
-- 		local drops = {}
-- 		default.get_inventory_drops(pos, "src", drops)
-- 		default.get_inventory_drops(pos, "fuel", drops)
-- 		default.get_inventory_drops(pos, "dst", drops)
-- 		drops[#drops+1] = "machines:machine"
-- 		minetest.remove_node(pos)
-- 		return drops
-- 	end,

	allow_metadata_inventory_put = allow_metadata_inventory_put,
	allow_metadata_inventory_move = allow_metadata_inventory_move,
	allow_metadata_inventory_take = allow_metadata_inventory_take,
})

	
minetest.register_node("bitumen:engine_on", {
	description = "Engine",
	tiles = {
		"default_tin_block.png", "default_bronze_block.png",
		"default_bronze_block.png", "default_tin_block.png",
		"default_tin_block.png",
		{
			image = "default_furnace_front_active.png",
			backface_culling = false,
			animation = {
				type = "vertical_frames",
				aspect_w = 16,
				aspect_h = 16,
				length = 1.5
			},
		}
	},
	paramtype2 = "facedir",
	groups = {cracky=2, petroleum_fixture=1, not_in_creative_inventory=1},
	is_ground_content = false,
	sounds = default.node_sound_stone_defaults(),
	--can_dig = can_dig,
	
	on_timer = bitumen.burner_on_timer,

	on_construct = function(pos)
		local meta = minetest.get_meta(pos)
		meta:set_string("formspec", get_melter_active_formspec())
		local inv = meta:get_inventory()
		inv:set_size('fuel', 4)
		
		minetest.get_node_timer(pos):start(1.0)
		
	end,

-- 	on_metadata_inventory_move = function(pos)
-- 		minetest.get_node_timer(pos):start(1.0)
-- 	end,
-- 	on_metadata_inventory_put = function(pos)
-- 		-- start timer function, it will sort out whether furnace can burn or not.
-- 		minetest.get_node_timer(pos):start(1.0)
-- 	end,
-- 	
	
	on_punch = function(pos)
		swap_node(pos, "bitumen:engine")
	end,

	allow_metadata_inventory_put = allow_metadata_inventory_put,
	allow_metadata_inventory_move = allow_metadata_inventory_move,
	allow_metadata_inventory_take = allow_metadata_inventory_take,
})









]]










--[[	
minetest.register_ore({
      ore_type        = "stratum",
      ore             = "default:meselamp",
      wherein         = {"default:stone"},
      clust_scarcity  = 1,
      y_min           = -8,
      y_max           = 72,
      noise_params    = {
         offset = 32,
         scale = 16,
         spread = {x = 256, y = 256, z = 256},
         seed = 90122,
         octaves = 3,
         persist = 0.5
      },
      np_stratum_thickness = {
         offset = 8,
         scale = 4,
         spread = {x = 128, y = 128, z = 128},
         seed = -316,
         octaves = 1,
         persist = 0.0
      },
   })
]]