From 9d2581c8efd3ece6c15d50690ec232119167be7d Mon Sep 17 00:00:00 2001
From: Izzy <yzziizzy@gmail.com>
Date: Sat, 20 Apr 2019 18:53:41 -0600
Subject: [PATCH] storage tank unfinished version of pipeline

---
 lights.lua              |   2 +-
 magic_nodes.lua         |  26 +-
 models/storage_tank.obj | 652 ++++++++++++++++++++++++++++++++++++++++
 pipeline.lua            | 627 ++++++++++++++++++++++++++++++++++++++
 spills.lua              |   1 +
 5 files changed, 1304 insertions(+), 4 deletions(-)
 create mode 100644 models/storage_tank.obj
 create mode 100644 pipeline.lua

diff --git a/lights.lua b/lights.lua
index 6759700..2a6f516 100644
--- a/lights.lua
+++ b/lights.lua
@@ -150,7 +150,7 @@ minetest.register_node("bitumen:kerosene_light_on", {
 
 minetest.register_node("bitumen:magic_light", {
 	description = "Hidden Magic Light",
-	drawtype = "node",
+	drawtype = "airlike",
 --	tiles = {"default_mese.png"},
 	paramtype = "light",
 	sunlight_propagates = true,
diff --git a/magic_nodes.lua b/magic_nodes.lua
index fd87131..2df8340 100644
--- a/magic_nodes.lua
+++ b/magic_nodes.lua
@@ -18,9 +18,11 @@ bitumen.magic = {}
 minetest.register_node("bitumen:collision_node", {
 	paramtype = "light",
 	drawtype = "airlike",
-	--tiles = {"default_mese.png"},
+-- 	drawtype = "node",
+-- 	tiles = {"default_leaves.png"},
 	walkable = true,
 	sunlight_propagates = true,
+-- 	groups = {choppy = 1},
 })
 
 
@@ -42,8 +44,9 @@ bitumen.magic.set_nodes = function(pos, nodename, def)
 		
 		local p = add(pos, delta)
 		local n = minetest.get_node(p)
-		if true or n.name == "air" then
-			print("magic node at ".. minetest.pos_to_string(p))
+		local g = minetest.registered_nodes[n.name].groups
+		if g and not g.bitumen_magic_proof then
+		--	print("magic node at ".. minetest.pos_to_string(p))
 			minetest.set_node(p, {name= nodename})
 -- 			minetest.set_node(p, {name= "default:glass"})
 			
@@ -92,6 +95,23 @@ bitumen.magic.gensphere = function(center, radius)
 	return out
 end
 
+-- center is the base
+bitumen.magic.gencylinder = function(center, radius, height) 
+	local out = {}
+	
+	for x = -radius, radius do 
+	for z = -radius, radius do 
+		if math.sqrt(x * x + z * z) <= radius then 
+			for y = 0, height do 
+				table.insert(out, {center[1]+x, center[2]+y, center[3]+z})
+			end
+		end
+	end
+	end
+	
+	return out
+end
+
 bitumen.magic.gencube = function(low, high) 
 	local out = {}
 	
diff --git a/models/storage_tank.obj b/models/storage_tank.obj
new file mode 100644
index 0000000..7992d26
--- /dev/null
+++ b/models/storage_tank.obj
@@ -0,0 +1,652 @@
+# Blender v2.72 (sub 0) OBJ File: 'storage_tank.blend'
+# www.blender.org
+o Cylinder
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diff --git a/pipeline.lua b/pipeline.lua
new file mode 100644
index 0000000..2a01b66
--- /dev/null
+++ b/pipeline.lua
@@ -0,0 +1,627 @@
+-- pipelines are like pipes except much larger and more performant
+-- pipelines are also only point-to-point; there are no joints
+-- pipelines need pumps to force the fluid through, even downhill
+
+
+local networks = {}
+local net_members = {}
+local netname = 1
+
+local mod_storage = minetest.get_mod_storage()
+
+
+
+networks = minetest.deserialize(mod_storage:get_string("pl_networks")) or {}
+net_members = minetest.deserialize(mod_storage:get_string("pl_net_members")) or {}
+netname = mod_storage:get_int("pl_netname") or 1
+
+
+local function save_data() 
+	--print("saving")
+	
+	mod_storage:set_string("pl_networks", minetest.serialize(networks))
+	mod_storage:set_string("pl_net_members", minetest.serialize(net_members))
+	mod_storage:set_int("pl_netname", netname)
+end
+
+
+-- centralized network creation for consistency
+local function new_network(pos) 
+	local hash = minetest.hash_node_position(pos)
+	print("new pipeline network: hash: ".. hash .." name: " ..netname); 
+	
+	networks[hash] = {
+		hash = hash,
+		pos = {x=pos.x, y=pos.y, z=pos.z},
+		fluid = 'air',
+		name = netname,
+		count = 1,
+		inputs = {
+			[hash] = 1,
+		},
+		outputs = {},
+		buffer = 0,
+		in_pressure = -32000,
+	}
+	
+	net_members[hash] = hash
+	
+	netname = netname + 1
+	
+	return networks[hash], hash
+end
+
+
+local function pnet_for(pos)
+	local hash = minetest.hash_node_position(pos)
+	local ph = net_members[hash]
+	if ph == nil then
+		return nil, hash
+	end
+	
+	return networks[ph], hash
+end
+
+
+
+-- merge a list of networks, if the are multiple nets in the list
+local function try_merge(merge_list)
+	if #merge_list > 1 then 
+		print("\n merging "..#merge_list.." networks")
+		
+		local biggest = {count = 0}
+		local mlookup = {}
+		
+		for _,n in ipairs(merge_list) do
+			mlookup[n.hash] = 1 
+			if n.count > biggest.count then
+				biggest = n
+			end
+		end
+		
+		mlookup[biggest.hash] = 0
+		
+		for k,v in pairs(net_members) do
+			if mlookup[v] == 1 then
+				net_members[k] = biggest.hash
+			end
+		end
+		
+		
+		for _,n in ipairs(merge_list) do
+			if n.hash ~= biggest.hash then
+				biggest.count = biggest.count + n.count
+				networks[n.hash] = nil -- delete old networks
+			end
+		end
+		
+		return biggest
+	end
+	
+	return merge_list[1]
+end
+
+
+
+-- check specific nearby nodes for existing networks
+local function check_merge(pos, npos1, npos2) 
+	local hash = minetest.hash_node_position(pos)
+	
+	local merge_list = {}
+	local current_net = nil
+	local found_net = 0
+	
+	local check_net = function(npos)
+		local nhash = minetest.hash_node_position(npos)
+		local nphash = net_members[nhash] 
+		if nphash ~= nil then
+			local pnet = networks[nphash]
+			
+			if nil == current_net then
+				print("joining existing network: ".. pnet.name)
+				net_members[hash] = nphash
+				current_net = nphash
+				pnet.count = pnet.count + 1
+				pnet.inputs[hash] = 1
+				table.insert(merge_list, pnet)
+			elseif current_net == nphash then
+				print("alternate connection to existing network")
+			else
+				print("found seconday network: "..pnet.name)
+				table.insert(merge_list, pnet)
+			end
+			
+			found_net = 1
+		end
+	end
+	
+	check_net(npos1)
+	check_net(npos2)
+	
+	return found_net, merge_list
+end
+
+
+
+
+bitumen.pipelines = {}
+
+-- used by external machines to find the network for a node
+bitumen.pipelines.get_net = function(pos)
+	local hash = minetest.hash_node_position(pos)
+	local phash = net_members[hash]
+	if phash == nil then
+		return nil, nil, hash
+	end
+	
+	return networks[phash], phash, hash
+end
+
+
+
+bitumen.pipes.after_change = function(pos, opos1, opos2, npos1, npos2)
+
+	local o1net, o1phash, o1hash = bitumen.pipelines.get_net(opos1) 
+	local o2net, o2phash, o2hash = bitumen.pipelines.get_net(opos2) 
+	local n1net, n1phash, n1hash = bitumen.pipelines.get_net(npos1) 
+	local n2net, n2phash, n2hash = bitumen.pipelines.get_net(npos2) 
+	
+	local check_o1 = true
+	local check_o2 = true
+	local check_n1 = true
+	local check_n2 = true
+	
+	-- check if one of the nodes is still in the network. this will often be the case
+	if vector.equals(opos1, npos1) then
+		print("old pos 1 is new pos 1")
+		check_o1 = false
+		check_n1 = false
+	elseif vector.equals(opos1, npos2) then
+		print("old pos 1 is new pos 1")
+		check_o1 = false
+		check_n2 = false
+	end
+
+	if vector.equals(opos2, npos1) then
+		print("old pos 1 is new pos 1")
+		check_o2 = false
+		check_n1 = false
+	elseif vector.equals(opos2, npos2) then
+		print("old pos 1 is new pos 1")
+		check_o2 = false
+		check_n2 = false
+	end
+	
+	-- remove o1 from the network
+	if check_o1 then
+		
+		
+	end
+	
+	
+	-- merge with n1's network
+	if check_o1 then
+		
+		
+	end
+	
+	
+	
+	
+	
+	
+	
+	
+	local hash = minetest.hash_node_position(pos)
+	local phash = net_members[hash]
+	if phash == nil then
+		print("wtf: pipe has no network in after_destruct")
+		return
+	end
+	local pnet = networks[phash]
+	if pnet == nil then
+		print("wtf: no network in after_destruct for pipe")
+		return
+	end
+	
+	-- remove this node from the network
+	net_members[hash] = nil
+	pnet.count = pnet.count - 1
+	
+	-- neighboring nodes
+	local check_pos = {
+		{x=pos.x+1, y=pos.y, z=pos.z},
+		{x=pos.x-1, y=pos.y, z=pos.z},
+		{x=pos.x, y=pos.y+1, z=pos.z},
+		{x=pos.x, y=pos.y-1, z=pos.z},
+		{x=pos.x, y=pos.y, z=pos.z+1},
+		{x=pos.x, y=pos.y, z=pos.z-1},
+	}
+	
+	local stack = {}
+	local found = 0
+	-- check neighbors for network membership
+	for _,p in ipairs(check_pos) do
+		local h = minetest.hash_node_position(p)
+		
+		local lphash = net_members[h]
+		if lphash ~= nil then
+			local lpnet = networks[lphash]
+			
+			-- only process pipes/fixtures on the same network as the destroyed pipe
+			if lpnet and lpnet.name == pnet.name then
+				stack[h] = vector.new(p)
+				found = found + 1
+				--print("check stack: "..p.x..","..p.y..","..p.z)
+			else 
+				print("no lpnet")
+			end
+		else
+			print("no lphash "..p.x..","..p.y..","..p.z)
+		end
+	end
+	
+	-- don't need to split the network if this was just on the end
+	if found > 1 then
+		--print("check to split the network")
+		for h,p in pairs(stack) do
+			print(dump(p))
+			print(dump(h))
+		-- BUG: spouts and intakes can be counted as pipes when walking the network
+			
+			-- just rename the net
+			local new_pnet = rebase_network(p)
+		--	print("split off pnet ".. new_pnet.name .. " at " .. minetest.pos_to_string(p))
+			-- all fluid is lost in the network atm
+			-- some networks might get orphaned, for example, the first
+			--   net to be rebased in a loop
+		end
+		
+		
+	end
+	
+	save_data()
+end
+
+
+
+
+
+minetest.register_node("bitumen:pipeline", {
+	description = "Petroleum pipeline segment",
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{-.3, -.35, -.5, .3, .35, .5},
+			{-.35, -.3, -.5, .35, .3, .5},
+-- 			{-.4, -.4, -.4, .4, .4, .4},
+-- 			{-.4, -.4, -.4, .4, .4, .4},
+		},
+	},
+	paramtype = "light",
+	is_ground_content = false,
+	paramtype2 = "facedir",
+	is_ground_content = false,
+	tiles = { "default_gold_block.png" },
+	walkable = true,
+	groups = { cracky = 3, petroleum_pipeline = 1, },
+	on_place = minetest.rotate_node,
+	
+	on_construct = function(pos) 
+		print("\npipeline placed at "..pos.x..","..pos.y..","..pos.z)
+		
+		
+		local node   = minetest.get_node(pos)
+		
+		local back_dir = minetest.facedir_to_dir(node.param2)
+		local backpos = vector.add(pos, back_dir) 
+		local frontpos = vector.subtract(pos, back_dir) 
+		
+	--	minetest.set_node(backpos, {name="default:dirt"})
+		
+	--	local found_net, merge_list = check_merge(pos)
+		
+		--if found_net == 0 then 
+		--	local net = new_network(pos)
+		--end
+		
+	--	try_merge(merge_list)
+		
+		--save_data()
+	end,
+	
+	--after_destruct = bitumen.pipes.after_destruct,
+})
+
+
+
+
+
+
+minetest.register_node("bitumen:pipeline_elbow", {
+	description = "Petroleum pipeline elbow",
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{-.3, -.35, -.5, .3, .35, .3},
+			{-.35, -.3, -.5, .35, .3, .3},
+			
+			{-.3, -.3, -.35, .3, .5, .35},
+			{-.35, -.3, -.3, .35, .5, .3},
+-- 			{-.4, -.4, -.4, .4, .4, .4},
+-- 			{-.4, -.4, -.4, .4, .4, .4},
+		},
+	},
+	paramtype = "light",
+	is_ground_content = false,
+	paramtype2 = "facedir",
+	is_ground_content = false,
+	tiles = { "default_gold_block.png" },
+	walkable = true,
+	groups = { cracky = 3, petroleum_pipeline = 1, },
+	on_place = minetest.rotate_node,
+	
+	on_rotate = function(pos, node, player, mode, new_param2)
+		
+		
+		
+		local oldback_dir = minetest.facedir_to_dir(node.param2)
+		local oldfrontpos = vector.subtract(pos, oldback_dir) 
+		
+		local oldtop_dir = ({[0]={x=0, y=1, z=0},
+			{x=0, y=0, z=1},
+			{x=0, y=0, z=-1},
+			{x=1, y=0, z=0},
+			{x=-1, y=0, z=0},
+			{x=0, y=-1, z=0}})[math.floor(node.param2/4)]
+		
+		local oldtoppos = vector.add(pos, oldtop_dir)
+		
+		minetest.set_node(oldfrontpos, {name="default:glass"})
+		minetest.set_node(oldtoppos, {name="default:glass"})
+		
+		
+		
+		local back_dir = minetest.facedir_to_dir(new_param2)
+		local frontpos = vector.subtract(pos, back_dir) 
+		
+		local top_dir = ({[0]={x=0, y=1, z=0},
+			{x=0, y=0, z=1},
+			{x=0, y=0, z=-1},
+			{x=1, y=0, z=0},
+			{x=-1, y=0, z=0},
+			{x=0, y=-1, z=0}})[math.floor(new_param2/4)]
+		
+		local toppos = vector.add(pos, top_dir)
+		
+		minetest.set_node(frontpos, {name="default:dirt"})
+		minetest.set_node(toppos, {name="default:cobble"})
+	end,
+	
+	on_construct = function(pos) 
+		print("\npipeline elbow placed at "..pos.x..","..pos.y..","..pos.z)
+		
+		
+		local node   = minetest.get_node(pos)
+		
+			
+		local back_dir = minetest.facedir_to_dir(node.param2)
+		local frontpos = vector.subtract(pos, back_dir) 
+		
+		local top_dir = ({[0]={x=0, y=1, z=0},
+			{x=0, y=0, z=1},
+			{x=0, y=0, z=-1},
+			{x=1, y=0, z=0},
+			{x=-1, y=0, z=0},
+			{x=0, y=-1, z=0}})[math.floor(node.param2/4)]
+		
+		local toppos = vector.add(pos, top_dir)
+		
+		minetest.set_node(frontpos, {name="default:dirt"})
+		minetest.set_node(toppos, {name="default:cobble"})
+		
+	--	local found_net, merge_list = check_merge(pos)
+		
+		--if found_net == 0 then 
+		--	local net = new_network(pos)
+		--end
+		
+	--	try_merge(merge_list)
+		
+		--save_data()
+	end,
+	
+	--after_destruct = bitumen.pipelines.after_destruct,
+})
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+local storage_tank_builder_formspec =
+	"size[10,8;]" ..
+	default.gui_bg ..
+	default.gui_bg_img ..
+	default.gui_slots ..
+	"list[context;main;0,0.3;4,3;]" ..
+	"button[5,1;1,4;build;Build]" ..
+	"list[current_player;main;0,3.85;8,1;]" ..
+	"list[current_player;main;0,5.08;8,3;8]" ..
+	"listring[context;main]" ..
+	"listring[current_player;main]" ..
+	default.get_hotbar_bg(0, 3.85)
+
+
+minetest.register_node("bitumen:storage_tank_constructor", {
+	description = "Storage Tank Constructor",
+	drawtype = "normal",
+	paramtype2 = "facedir",
+	on_rotate = screwdriver.rotate_simple,
+	groups = {cracky=1},
+	tiles = {
+		"default_copper_block.png","default_tin_block.png",
+	},
+	
+	on_construct = function(pos)
+		local meta = minetest.get_meta(pos)
+		local inv = meta:get_inventory()
+		inv:set_size("main", 12)
+		
+		meta:set_string("formspec", storage_tank_builder_formspec);
+	end,
+	
+
+	on_receive_fields = function(pos, form, fields, player)
+		
+		local meta = minetest.get_meta(pos)
+		
+		if fields.build then
+			-- tanks can only be built on thick foundations
+			local ret = bitumen.check_foundation(
+				{x = pos.x - 15, y = pos.y - 3, z = pos.z - 15},
+				{x = pos.x + 15, y = pos.y - 1, z = pos.z + 15},
+				{
+					["default:steelblock"] = 1,
+					["bitumen:concrete"] = 1,
+				}
+			)
+			
+			if ret == false then
+				minetest.chat_send_player(player:get_player_name(), "Foundation is incomplete: 15x3x15")
+				return
+			else
+				minetest.chat_send_player(player:get_player_name(), "Foundation is complete.")
+			end
+			
+			-- tanks need room
+			local ret = bitumen.check_foundation(
+				{x = pos.x - 16, y = pos.y    , z = pos.z - 16},
+				{x = pos.x + 16, y = pos.y + 12, z = pos.z + 16},
+				{
+					["air"] = 1,
+					["bitumen:storage_tank_constructor"] = 1,
+				}
+			)
+			
+			if ret == false then
+				minetest.chat_send_player(player:get_player_name(), "Area is not clear: 16x12x16")
+				return
+			else
+				minetest.chat_send_player(player:get_player_name(), "Area is clear.")
+			end
+			
+			local inv = meta:get_inventory();
+			
+			-- should be ~1500 sheets
+			if (inv:contains_item("main", "bitumen:galv_steel_sheet 99") and 
+				inv:contains_item("main", "default:coal_lump 20")) then
+				
+				inv:remove_item("main", "bitumen:galv_steel_sheet 99")
+				inv:remove_item("main", "default:coal_lump 20")
+			else
+				minetest.chat_send_player(player:get_player_name(), "Not enough materials: 99x Galvanized Steel Sheet, 20x Coal Lump")
+				return
+			end
+			
+			-- ready to go
+			minetest.chat_send_player(player:get_player_name(), "Clear area, construction starting...")
+			
+			for i = 9,1,-1 do
+				minetest.after(10-i, (function(n)
+					return function() 
+						minetest.chat_send_player(
+							player:get_player_name(),
+							"Storage Tank construction in "..n.."..."
+						) 
+					end
+				end)(i))
+			end
+			
+			minetest.after(10, function()
+				minetest.set_node(pos, {name="bitumen:storage_tank"})
+			end)
+			
+		end
+	end,
+})
+
+
+
+bitumen.register_blueprint({
+	name = "bitumen:storage_tank",
+})
+
+
+
+
+
+minetest.register_node("bitumen:storage_tank", {
+	paramtype = "light",
+	drawtype = "mesh",
+	mesh = "storage_tank.obj",
+	description = "Storage Tank",
+	tiles = {
+		"default_sand.png",
+	},
+ 	inventory_image = "default_sand.png",
+ 	selection_box = {
+		type = "fixed",
+		fixed = {
+			{ -.5, -.5, -.5, .5, 1.5, .5 },
+-- 			{ -8.2, -.5, -.2, -7.8, 10, .2 },
+-- 			{ -.2, -.5, -8.2, .2, 10, -7.8 },
+-- 			{ 8.2, -.5, -.2, 7.8, 10, .2 },
+-- 			{ -.2, -.5, 8.2, .2, 10, 7.8 },
+		},
+ 	},
+ 	collision_box = {
+		type = "fixed",
+		fixed = {
+			{ -.5, -.5, -.5, .5, 1.5, .5 },
+		}
+ 	},
+	paramtype2 = "facedir",
+	groups = {choppy=1, petroleum_fixture=1, bitumen_magic_proof=1 },
+	sounds = default.node_sound_wood_defaults(),
+	
+	on_construct = function(pos)
+		local meta = minetest.get_meta(pos)
+		if placer then
+			local owner = placer:get_player_name()
+			meta:set_string("owner", owner)
+		end
+	--	meta:set_float("fluid_level", 0)
+	--	meta:set_float("capacity", math.floor(3.14159 * .75 * 9 * 9 * 9 * 64))
+	--	meta:set_string("infotext", "0%")
+	
+		bitumen.magic.set_collision_nodes(pos, bitumen.magic.gencylinder({0, 0, 0}, 14.99, 9)) 
+		
+-- 		bitumen.pipes.on_construct(pos)
+	end,
+	
+	on_destruct = bitumen.magic.on_destruct,
+	
+	can_dig = function(pos, player)
+-- 		local meta = minetest.get_meta(pos);
+-- 		local owner = meta:get_string("owner")
+-- 		local fluid_level = meta:get_float("fluid_level") or 0
+-- 		return player:get_player_name() ~= owner and fluid_level <= 0.01
+		return true
+	end,
+})
+
diff --git a/spills.lua b/spills.lua
index 8a7d60a..0fe2d10 100644
--- a/spills.lua
+++ b/spills.lua
@@ -122,6 +122,7 @@ end
 
 
 -- TODO: wool, stairs, walls, seasons
+
 for _,n in ipairs(spill_nodes) do
 	register_spill_node(n)
 end