commit 21be5443709d1c4affc2815fa2097a75833c4218
Author: Maverick2797 <git.maverick2797@gmail.com>
Date:   Mon Apr 18 11:23:42 2022 +0800

    Working Code
    
    still need to add translation functions throughout

diff --git a/init.lua b/init.lua
new file mode 100755
index 0000000..b9187d8
--- /dev/null
+++ b/init.lua
@@ -0,0 +1,216 @@
+local modname = minetest.get_current_modname()
+local function trans(st,...)
+	return minetest.translate(modname,st,...)
+end
+local function fs_t(st,...)
+	return minetest.formspec_escape(trans(st,...))
+end
+local function show_formspec(itemstack,pname)
+	local formspec = ""
+	formspec = formspec.."formspec_version[3]"
+	formspec = formspec.."size[10.5,7.5]"
+
+	formspec = formspec.."label[0.2,0.4;Advanced Trains Remote Control v1]"
+
+	formspec = formspec.."button_exit[6.6,0.2;3.7,0.8;bind_train;Bind To New Train]"
+
+	local train_id = itemstack:get_meta():get("bound_train")
+	if not train_id or not advtrains.trains[train_id] then
+		formspec = formspec.."label[0.2,1.2;Remote Control: Not Bound]"
+		formspec = formspec.."label[0.2,1.6;Punch a train with the controller to bind it]"
+	else
+		formspec = formspec.."label[0.2,1.2;Remote Control: Train %s]"
+		formspec = formspec.."label[0.2,1.6;Train Length: %s wagon(s)]"
+		formspec = formspec.."label[0.2,2;Train Length: %sm]"
+
+		formspec = formspec.."textarea[0.2,2.9;5.8,0.8;ext_disp;External Display;%s]"
+		formspec = formspec.."textarea[0.2,4.1;5.8,0.8;int_disp;Internal Display;%s]"
+		formspec = formspec.."field[0.2,6.5;2.8,0.8;line;Line;%s]"
+		formspec = formspec.."field[0.2,5.3;5.8,0.8;rc;Routing Code;%s]"
+		formspec = formspec.."button[3.2,6.5;2.8,0.8;update_info;Update Train Info]"
+
+		formspec = formspec.."label[6.6,1.6;Maximum Speed: %s m/s]"
+		formspec = formspec.."field[6.6,2.9;1.9,0.8;speed_input;Set Speed;%d]"
+		formspec = formspec.."button[8.8,2.9;1.5,0.8;send_speed;Confirm]"
+		formspec = formspec.."field[6.6,4.1;1.9,0.8;atc_input;Send ATC Command;]"
+		formspec = formspec.."button[8.8,4.1;1.5,0.8;send_atc;Send]"
+		formspec = formspec.."button[6.6,5.3;3.7,0.8;reverse;Reverse]"
+
+		formspec = formspec.."label[6.6,2;Door Control]"
+		formspec = formspec.."scrollbaroptions[min=1;max=3;smallstep=1;largestep=1;thumbsize=1;arrows=hide]scrollbar[6.6,2.2;3.7,0.2;horizontal;door;%d]"
+		
+		formspec = formspec.."checkbox[6.6,6.6;ars_disable;Disable ARS;%s]"
+		formspec = formspec.."checkbox[6.6,7.1;autocouple;Autocouple;%s]"
+
+		formspec = formspec.."button[9.1,6.5;1.2,0.8;estop;STOP!]"
+				
+		local train = advtrains.trains[train_id]
+	
+		formspec = string.format(formspec,
+			train_id,
+			#train.trainparts,
+			train.trainlen,
+			train.text_outside or "",
+			train.text_inside or "",
+			train.line or "",
+			train.routingcode or "",
+			train.max_speed,
+			train.velocity,
+			((train.door_open or 0) + 2),
+			tostring(train.ars_disable),
+			tostring(train.autocouple or train.atc_wait_autocouple)
+		)
+	end
+	minetest.show_formspec(pname,modname..":controller",formspec)
+end
+
+minetest.register_on_player_receive_fields(function(player,formname,fields)
+	if formname ~= modname..":controller" then return end
+	local pname = player:get_player_name()
+	if not pname then return end
+	local itemstack = player:get_wielded_item()
+	if itemstack:get_name() ~= modname..":remote_control" then return end
+	
+	local item_meta = itemstack:get_meta()
+	local train_id = item_meta:get("bound_train")
+	if not train_id and not fields.bind_train then
+		return
+	end
+	local train = advtrains.trains[train_id]
+	local door_scroll = minetest.explode_scrollbar_event(fields.door)
+	--[[list of fields:
+		active fields:
+			bind_train
+			update_info
+			send_speed
+			send_atc
+			reverse
+			door
+			ars_disable
+			autocouple
+			estop
+		data fields:
+			ext_disp
+			int_disp
+			line
+			rc
+			speed_input
+			atc_input
+	--]]
+	
+	--bind train
+	if fields.bind_train then
+		item_meta:set_string("bound_train","")
+		item_meta:set_string("description","Unbound Controller")
+		player:set_wielded_item(itemstack)
+		minetest.chat_send_player(pname,trans("Punch a train with the controller to bind it"))
+		return
+	--update info
+	elseif fields.update_info then
+		train.text_outside = fields.ext_disp or ""
+		train.text_inside = fields.int_disp or ""
+		train.line = fields.line or ""
+		train.routingcode = fields.rc or ""
+		minetest.after(0, advtrains.invalidate_path, train_id)
+		return
+	--send speed command
+	elseif fields.send_speed then
+		local current_v,speed_input = train.velocity,tonumber(fields.speed_input)
+		if not tonumber(speed_input) then
+			minetest.chat_send_player(pname,trans("Speed must be a number"))
+			return
+		end
+		local command
+		local acc
+		speed_input = tonumber(speed_input)
+		if current_v == speed_input then
+			minetest.chat_send_player(pname,trans("Speed unchanged"))
+			return
+		elseif current_v < speed_input then
+			command = "S"..speed_input
+			acc = "accelerating"
+		elseif current_v > speed_input then
+			command = "B"..speed_input
+			acc = "braking"
+		end
+		advtrains.atc.train_set_command(train,command,true)
+		minetest.chat_send_player(pname,trans("Train "..acc.." to "..speed_input))
+		return
+	--send atc command
+	elseif fields.send_atc then
+		if fields.atc_input == "" then
+			minetest.chat_send_player(pname,trans("No ATC command to send"))
+			return
+		end
+		advtrains.atc.train_set_command(train,fields.atc_input,true)
+		return
+	-- send reverse command
+	elseif fields.reverse then
+		if train.velocity ~= 0 then
+			minetest.chat_send_player(pname,trans("Please stop the train before reversing"))
+			return
+		end
+		advtrains.invert_train(train_id)
+		advtrains.train_ensure_init(train_id,train)
+		-- advtrains.atc.train_reset_command(train)
+		minetest.chat_send_player(pname,trans("Train reversed"))
+		return
+	--door control
+	elseif door_scroll.type == "CHG" then
+		train.door_open = door_scroll.value-2
+		return
+	-- ars_disable
+	elseif fields.ars_disable then
+		if not advtrains.interlocking then
+			return
+		end
+		advtrains.interlocking.ars_set_disable(train,minetest.is_yes(fields.ars_disable))
+		return
+	-- autocouple
+	elseif fields.autocouple == "true" then
+		train.autocouple = true
+		return
+	elseif fields.autocouple == "false" then
+		train.autocouple = nil
+		return
+	-- emergency stop button
+	elseif fields.estop then
+		advtrains.atc.train_set_command(train,"BB",true)
+		minetest.chat_send_player(pname,trans("Emergency Brake applied"))
+		return
+	end
+end)
+
+minetest.register_craftitem(modname..":remote_control",{
+	description = trans("Train Controller"),
+	short_description = trans("Unbound Train Controller"),
+	groups = {},
+	inventory_image = "advtrains_rc_controller.png",
+	wield_image = "advtrains_rc_controller.png",
+	stack_max = 1,
+	on_use = function(itemstack, user, pointed_thing)
+		local pname = user:get_player_name()
+		if not pname or pname == "" then
+			return
+		end
+		if not minetest.check_player_privs(pname, {train_admin=true}) then
+			minetest.chat_send_player(pname, "Insufficient privileges to use this!")
+			return
+		end
+		
+		local meta = itemstack:get_meta()
+		local bound_train = meta:get_string("bound_train") -- set to nil to enable bind-mode
+		if bound_train == "" then bound_train = nil end
+		if pointed_thing.type == "object" then
+			local object = pointed_thing.ref:get_luaentity()
+			local data = advtrains.wagons[object.id]
+			if data == nil then return end
+			if not bound_train then -- bind to this train
+				meta:set_string("bound_train",data.train_id)
+				meta:set_string("description",string.format("Train Controller\nBound to %s",data.train_id))
+			end
+		end
+		show_formspec(itemstack,pname)
+		return itemstack
+	end,
+})
\ No newline at end of file
diff --git a/mod.conf b/mod.conf
new file mode 100755
index 0000000..2b1a075
--- /dev/null
+++ b/mod.conf
@@ -0,0 +1,3 @@
+name=advtrains_portable_remote_control
+description=Remote Control for Advtrains
+depends=advtrains
\ No newline at end of file
diff --git a/textures/advtrains_rc_controller.png b/textures/advtrains_rc_controller.png
new file mode 100755
index 0000000..0632ca2
Binary files /dev/null and b/textures/advtrains_rc_controller.png differ