src/chat_interface.h

--trainhud.lua: holds all the code for train controlling

advtrains.hud = {}

minetest.register_on_leaveplayer(function(player)
advtrains.hud[player:get_player_name()] = nil
end)

local mletter={[1]="F", [-1]="R", [0]="N"}
local doorstr={[-1]="|<>| >|<", [0]=">|< >|<", [1]=">|< |<>|"}

function advtrains.on_control_change(pc, train, flip)
	if pc.sneak then
		if pc.up then
			train.tarvelocity = train.max_speed or 10
		end
		if pc.down then
			train.tarvelocity = 0
		end
		if pc.left then
			train.tarvelocity = 4
		end
		if pc.right then
			train.tarvelocity = 8
		end
		if pc.jump then
			train.brake = true
			--0: released, 1: brake and pressed, 2: released and brake, 3: pressed and brake
			if not train.brake_hold_state or train.brake_hold_state==0 then
				train.brake_hold_state = 1
			elseif train.brake_hold_state==2 then
				train.brake_hold_state = 3
			end
		elseif train.brake_hold_state==1 then
			train.brake_hold_state = 2
		elseif train.brake_hold_state==3 then
			train.brake = false
			train.brake_hold_state = 0
		end
		--shift+use:see wagons.lua
	else
		if pc.up then
			train.tarvelocity = train.tarvelocity + 1
		end
		if pc.down then
			if train.velocity>0 then
				train.tarvelocity = math.max(train.tarvelocity - 1, 0)
			else
				train.movedir = -train.movedir
			end
		end
		if pc.left then
			if train.door_open ~= 0 then
				train.door_open = 0
			else
				train.door_open = -train.movedir
			end
		end
		if pc.right then
			if train.door_open ~= 0 then
				train.door_open = 0
			else
				train.door_open = train.movedir
			end
		end
		if train.brake_hold_state~=2 then
			train.brake = false
		end
		if pc.jump then
			train.brake = true
		end
		if pc.aux1 then
			--horn
		end
	end
end
function advtrains.update_driver_hud(pname, train, flip)
	advtrains.set_trainhud(pname, advtrains.hud_train_format(train, flip))
end
function advtrains.clear_driver_hud(pname)
	advtrains.set_trainhud(pname, "")
end

function advtrains.set_trainhud(name, text)
	local hud = advtrains.hud[name]
	local player=minetest.get_player_by_name(name)
	if not player then
	   return
	end
	if not hud then
		hud = {}
		advtrains.hud[name] = hud
		hud.id = player:hud_add({
			hud_elem_type = "text",
			name = "ADVTRAINS",
			number = 0xFFFFFF,
			position = {x=0.5, y=0.7},
			offset = {x=0, y=0},
			text = text,
			scale = {x=200, y=60},
			alignment = {x=0, y=0},
		})
		hud.oldText=text
		return
	elseif hud.oldText ~= text then
		player:hud_change(hud.id, "text", text)
		hud.oldText=text
	end
end
function advtrains.hud_train_format(train, flip)
	local fct=flip and -1 or 1
	if not train then return "" end
	
	local max=train.max_speed or 10
	local vel=advtrains.abs_ceil(train.velocity)
	local tvel=advtrains.abs_ceil(train.tarvelocity)
	local topLine, firstLine, secondLine
	
	topLine="  ["..mletter[fct*train.movedir].."]  "..doorstr[(train.door_open or 0) * train.movedir].."  "..(train.brake and "="..( train.brake_hold_state==2 and "^" or "" ).."B=" or "")
	firstLine=attrans("Speed:").." |"..string.rep("+", vel)..string.rep("_", max-vel)..">"
	secondLine=attrans("Target:").." |"..string.rep("+", tvel)..string.rep("_", max-tvel)..">"
	
	return topLine.."\n"..firstLine.."\n"..secondLine
end
	Commit message (Collapse)	Author	Age
*	Add server side ncurses terminal	est31	2015-11-06
	This adds a chat console the server owner can use for administration or to talk with players. It runs in its own thread, which makes the user interface immune to the server's lag, behaving just like a client, except timeout. As it uses the same console code as the f10 console, things like nick completion or a scroll buffer basically come for free. The terminal itself is written in a general way so that adding a client version later on is just about implementing an interface. Fatal errors are printed after the console exists and the ncurses terminal buffer gets cleaned up with endwin(), so that the error still remains visible. The server owner can chose their username their entered text will have in chat and where players can send PMs to. Once the username is secured with a password to prevent anybody to take over the server, the owner can execute admin tasks over the console. This change includes a contribution by @kahrl who has improved ncurses library detection.