Added Forcefield generator by ShadowNinja

technic/forcefield.lua

@@ -0,0 +1,213 @@
+--Forcefield mod by ShadowNinja
+
+local forcefield_emitter_buffer_size = 10000
+local forcefield_emitter_power_consumption = 1
+local forcefield_update_interval = 1
+
+minetest.register_craft({
+	output = 'technic:forcefield_emitter_off',
+	recipe = {
+			{'default:mese',         'technic:deployer_off', 'default:mese'        },
+			{'technic:deployer_off', 'technic:motor',        'technic:deployer_off'},
+			{'default:mese',         'technic:deployer_off', 'default:mese'        },
+	}
+})
+
+local function get_forcefield_count(range)
+	local count = 0
+	for x=-range,range do
+	for y=0,range do
+	for z=-range,range do
+		if ((x*x+y*y+z*z) <= (range * range + range)) then
+			if (y == 0) or ((range-1) * (range-1) + (range-1) <= x*x+y*y+z*z) then
+				count = count + 1
+			end
+		end
+	end
+	end
+	end
+	return count
+end
+
+local function add_forcefield(pos, range)
+	for x=-range,range do
+	for y=-range,range do
+	for z=-range,range do
+		if ((x*x+y*y+z*z) <= (range * range + range)) then
+			if ((range-1) * (range-1) + (range-1) <= x*x+y*y+z*z) then
+				local np={x=pos.x+x,y=pos.y+y,z=pos.z+z}
+				local n = minetest.env:get_node(np).name
+				if (n == "air") then
+					minetest.env:add_node(np, {name = "technic:forcefield"})
+				end
+			end
+		end
+	end
+	end
+	end
+	return true
+end
+
+local function remove_forcefield(p, range)
+	for x=-range,range do
+	for y=-range,range do
+	for z=-range,range do
+		if ((x*x+y*y+z*z) <= (range * range + range)) then
+			if ((range-1) * (range-1) + (range-1) <= x*x+y*y+z*z) then
+				local np={x=p.x+x,y=p.y+y,z=p.z+z}
+				local n = minetest.env:get_node(np).name
+				if (n == "technic:forcefield") then
+					minetest.env:remove_node(np)
+				end
+			end
+		end
+	end
+	end
+	end
+end
+
+forcefield_receive_fields = function(pos, formname, fields, sender)
+	local meta = minetest.env:get_meta(pos)
+	local range = meta:get_int("range")
+	if fields.add then range = range + 1 end
+	if fields.subtract then range = range - 1 end
+	if range <= 20 and range >= 0 and meta:get_int("range") ~= range then
+		remove_forcefield(pos, meta:get_int("range"))
+		meta:set_int("range", range)
+		local buffer = meta:get_float("internal_EU_buffer")
+		local buffer_size = meta:get_float("internal_EU_buffer_size")
+		local load = math.floor(buffer / buffer_size * 100)
+		meta:set_string("formspec", get_forcefield_formspec(range, 0))
+	end
+end
+
+function get_forcefield_formspec(range, load)
+	if not load then load = 0 end
+	return "invsize[8,9;]"..
+	"label[0,0;Forcefield emitter]"..
+	"label[1,3;Power level]"..
+	"image[1,1;1,2;technic_power_meter_bg.png^[lowpart:"..
+	load..":technic_power_meter_fg.png]"..
+	"label[4,1;Range]"..
+	"label[4,2;"..range.."]"..
+	"button[3,2;1,1;add;+]"..
+	"button[5,2;1,1;subtract;-]"..
+	"list[current_player;main;0,5;8,4;]"
+end
+
+local function forcefield_check(pos)
+	local meta = minetest.env:get_meta(pos)
+	local node = minetest.env:get_node(pos)
+	local internal_EU_buffer=meta:get_float("internal_EU_buffer")
+	local internal_EU_buffer_size=meta:get_float("internal_EU_buffer_size")
+
+	local load = math.floor(internal_EU_buffer/internal_EU_buffer_size * 100)
+	meta:set_string("formspec", get_forcefield_formspec(meta:get_int("range"), load))
+
+	local power_requirement = get_forcefield_count(meta:get_int("range")) * forcefield_emitter_power_consumption
+	if meta:get_int("mesecons_powered") == 0 and internal_EU_buffer >= power_requirement then
+		if node.name == "technic:forcefield_emitter_off" then
+			hacky_swap_node(pos, "technic:forcefield_emitter_on")
+			minetest.env:get_node_timer(pos):start(forcefield_update_interval)
+		end
+		internal_EU_buffer=internal_EU_buffer-power_requirement;
+		meta:set_float("internal_EU_buffer", internal_EU_buffer)
+		add_forcefield(pos, meta:get_int("range"))
+	else
+		remove_forcefield(pos, meta:get_int("range"))
+		if node.name == "technic:forcefield_emitter_on" then
+			hacky_swap_node(pos, "technic:forcefield_emitter_off")
+			minetest.env:get_node_timer(pos):start(forcefield_update_interval)
+		end
+	end
+	return true
+
+end
+
+minetest.register_node("technic:forcefield_emitter_off", {
+	description = "Forcefield emitter",
+	inventory_image = minetest.inventorycube("technic_forcefield_emitter_off.png"),
+	tiles = {"technic_forcefield_emitter_off.png"},
+	is_ground_content = true,
+	groups = {cracky = 1},
+	technic_power_machine=1,
+	on_timer = forcefield_check,
+	on_receive_fields = forcefield_receive_fields,
+	on_construct = function(pos)
+		minetest.env:get_node_timer(pos):start(forcefield_update_interval)
+		local meta = minetest.env:get_meta(pos)
+		meta:set_float("technic_power_machine", 1)
+		meta:set_float("internal_EU_buffer", 0)
+		meta:set_float("internal_EU_buffer_size", forcefield_emitter_buffer_size)
+		meta:set_int("range", 10)
+		meta:set_int("mesecons_powered", 0)
+		meta:set_string("formspec", get_forcefield_formspec(meta:get_int("range", 0)))
+		meta:set_string("infotext", "Forcefield emitter");
+	end,
+	mesecons = {effector = {
+		action_on = function (pos, node)
+			minetest.env:get_meta(pos):set_int("mesecons_powered", 1)
+		end,
+		action_off = function(pos, node)
+			minetest.env:get_meta(pos):set_int("mesecons_powered", 0)
+		end
+	}}
+})
+
+minetest.register_node("technic:forcefield_emitter_on", {
+	description = "Forcefield emitter on (you hacker you)",
+	tiles = {"technic_forcefield_emitter_on.png"},
+	is_ground_content = true,
+	groups = {cracky = 1, not_in_creative_inventory=1},
+	drop='"technic:forcefield_emitter_off" 1',
+	on_timer = forcefield_check,
+	on_receive_fields = forcefield_receive_fields,
+	on_construct = function(pos) 
+		minetest.env:get_node_timer(pos):start(forcefield_update_interval)
+		local meta = minetest.env:get_meta(pos)
+		meta:set_float("technic_power_machine", 1)
+		meta:set_float("internal_EU_buffer", 0)
+		meta:set_float("internal_EU_buffer_size", forcefield_emitter_buffer_size)
+		meta:set_int("range", 10)
+		meta:set_int("mesecons_powered", 0)
+		meta:set_string("formspec", get_forcefield_formspec(meta:get_int("range"), 0))
+		meta:set_string("infotext", "Forcefield emitter");
+	end,
+	on_dig = function(pos, node, digger)	
+		remove_forcefield(pos, minetest.env:get_meta(pos):get_int("range"))
+		return minetest.node_dig(pos, node, digger)
+	end,
+	technic_power_machine=1,
+	mesecons = {effector = {
+		action_on = function(pos, node)
+			minetest.env:get_meta(pos):set_int("mesecons_powered", 1)
+		end,
+		action_off = function(pos, node)
+			minetest.env:get_meta(pos):set_int("mesecons_powered", 0)
+		end
+	}}
+})
+
+minetest.register_node("technic:forcefield", {
+	description = "Forcefield (you hacker you)",
+	sunlight_propagates = true,
+	drop = '',
+	tiles = {{name="technic_forcefield_animated.png", animation={type="vertical_frames", aspect_w=16, aspect_h=16, length=2.0}}},
+	is_ground_content = true,
+	groups = {not_in_creative_inventory=1, unbreakable=1},
+	paramtype = "light",
+	drawtype = "nodebox",
+	node_box = {  --hacky way to get the field blue and not see through the ground
+		type = "fixed",
+		fixed={
+			{-.5,-.5,-.5,.5,.5,.5},
+		},
+	},
+})
+
+register_MV_machine ("technic:forcefield_emitter_on","RE")
+register_MV_machine ("technic:forcefield_emitter_off","RE")
+
+
+
+

technic/init.lua

@@ -43,6 +43,7 @@ dofile(modpath.."/battery_box_mv.lua")
 dofile(modpath.."/solar_panel_mv.lua")
 dofile(modpath.."/electric_furnace_mv.lua")
 dofile(modpath.."/alloy_furnace_mv.lua")
+dofile(modpath.."/forcefield.lua")
 
 --Tools
 if enable_mining_drill==true then dofile(modpath.."/mining_drill.lua") end