aboutsummaryrefslogtreecommitdiff
path: root/advtrains/atc.lua
blob: 0005093f0b25544809fbbdd9f307516b7a933e27 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
--atc.lua
--registers and controls the ATC system

local atc={}

local eval_conditional

-- ATC persistence table. advtrains.atc is created by init.lua when it loads the save file.
atc.controllers = {}
function atc.load_data(data)
	local temp = data and data.controllers or {}
	--transcode atc controller data to node hashes: table access times for numbers are far less than for strings
	for pts, data in pairs(temp) do
		if type(pts)=="number" then
			pts=minetest.pos_to_string(minetest.get_position_from_hash(pts))
		end
		atc.controllers[pts] = data
	end
end
function atc.save_data()
	return {controllers = atc.controllers}
end
--contents: {command="...", arrowconn=0-15 where arrow points}

--general
function atc.train_set_command(train, command, arrow)
	atc.train_reset_command(train, true)
	train.atc_delay = 0
	train.atc_arrow = arrow
	train.atc_command = command
end

function atc.send_command(pos, par_tid)
	local pts=minetest.pos_to_string(pos)
	if atc.controllers[pts] then
		--atprint("Called send_command at "..pts)
		local train_id = par_tid or advtrains.get_train_at_pos(pos)
		if train_id then
			if advtrains.trains[train_id] then
				--atprint("send_command inside if: "..sid(train_id))
				if atc.controllers[pts].arrowconn then
					atlog("ATC controller at",pts,": This controller had an arrowconn of", atc.controllers[pts].arrowconn, "set. Since this field is now deprecated, it was removed.")
					atc.controllers[pts].arrowconn = nil
				end
				
				local train = advtrains.trains[train_id]
				local index = advtrains.path_lookup(train, pos)
				
				local iconnid = 1
				if index then
					iconnid = train.path_cn[index]
				else
					atwarn("ATC rail at", pos, ": Rail not on train's path! Can't determine arrow direction. Assuming +!")
				end
				
				local command = atc.controllers[pts].command
				
				atc.train_set_command(train, command, iconnid==1)
				atprint("Sending ATC Command to", train_id, ":", command, "iconnid=",iconnid)
				return true
				
			else
				atwarn("ATC rail at", pos, ": Sending command failed: The train",train_id,"does not exist. This seems to be a bug.")
			end
		else
			atwarn("ATC rail at", pos, ": Sending command failed: There's no train at this position. This seems to be a bug.")
			-- huch
			--local train = advtrains.trains[train_id_temp_debug]
			--atlog("Train speed is",train.velocity,", have moved",train.dist_moved_this_step,", lever",train.lever)
			--advtrains.path_print(train, atlog)
			-- TODO track again when ATC bugs occur...
			
		end
	else
		atwarn("ATC rail at", pos, ": Sending command failed: Entry for controller not found.")
		atwarn("ATC rail at", pos, ": Please visit controller and click 'Save'")
	end
	return false
end

-- Resets any ATC commands the train is currently executing, including the target speed (tarvelocity) it is instructed to hold
-- if keep_tarvel is set, does not clear the tarvelocity
function atc.train_reset_command(train, keep_tarvel)
	train.atc_command=nil
	train.atc_delay=nil
	train.atc_brake_target=nil
	train.atc_wait_finish=nil
	train.atc_arrow=nil
	if not keep_tarvel then
		train.tarvelocity=nil
	end
end

--nodes
local idxtrans={static=1, mesecon=2, digiline=3}
local apn_func=function(pos)
	-- FIX for long-persisting ndb bug: there's no node in parameter 2 of this function!
	local meta=minetest.get_meta(pos)
	if meta then
		meta:set_string("infotext", attrans("ATC controller, unconfigured."))
		meta:set_string("formspec", atc.get_atc_controller_formspec(pos, meta))
	end
end

advtrains.atc_function = function(def, preset, suffix, rotation)
		return {
			after_place_node=apn_func,
			after_dig_node=function(pos)
				advtrains.invalidate_all_paths(pos)
				advtrains.ndb.clear(pos)
				local pts=minetest.pos_to_string(pos)
				atc.controllers[pts]=nil
			end,
			on_receive_fields = function(pos, formname, fields, player)
				if advtrains.is_protected(pos, player:get_player_name()) then
					minetest.record_protection_violation(pos, player:get_player_name())
					return
				end
				local meta=minetest.get_meta(pos)
				if meta then
					if not fields.save then 
						--[[--maybe only the dropdown changed
						if fields.mode then
							meta:set_string("mode", idxtrans[fields.mode])
							if fields.mode=="digiline" then
								meta:set_string("infotext", attrans("ATC controller, mode @1\nChannel: @2", fields.mode, meta:get_string("command")) )
							else
								meta:set_string("infotext", attrans("ATC controller, mode @1\nCommand: @2", fields.mode, meta:get_string("command")) )
							end
							meta:set_string("formspec", atc.get_atc_controller_formspec(pos, meta))
						end]]--
						return
					end
					--meta:set_string("mode", idxtrans[fields.mode])
					meta:set_string("command", fields.command)
					--meta:set_string("command_on", fields.command_on)
					meta:set_string("channel", fields.channel)
					--if fields.mode=="digiline" then
					--	meta:set_string("infotext", attrans("ATC controller, mode @1\nChannel: @2", fields.mode, meta:get_string("command")) )
					--else
					meta:set_string("infotext", attrans("ATC controller, mode @1\nCommand: @2", "-", meta:get_string("command")) )
					--end
					meta:set_string("formspec", atc.get_atc_controller_formspec(pos, meta))
					
					local pts=minetest.pos_to_string(pos)
					local _, conns=advtrains.get_rail_info_at(pos, advtrains.all_tracktypes)
					atc.controllers[pts]={command=fields.command}
					if #advtrains.occ.get_trains_at(pos) > 0 then
						atc.send_command(pos)
					end
				end
			end,
			advtrains = {
				on_train_enter = function(pos, train_id)
					atc.send_command(pos, train_id)
				end,
			},
		}
end

function atc.get_atc_controller_formspec(pos, meta)
	local mode=tonumber(meta:get_string("mode")) or 1
	local command=meta:get_string("command")
	local command_on=meta:get_string("command_on")
	local channel=meta:get_string("channel")
	local formspec="size[8,6]"
	--	"dropdown[0,0;3;mode;static,mesecon,digiline;"..mode.."]"
	if mode<3 then
		formspec=formspec
			.."style[command;font=mono]"
			.."field[0.8,1.5;7,1;command;"..attrans("Command")..";"..minetest.formspec_escape(command).."]"
		if tonumber(mode)==2 then
			formspec=formspec
				.."style[command_on;font=mono]"
				.."field[0.8,3;7,1;command_on;"..attrans("Command (on)")..";"..minetest.formspec_escape(command_on).."]"
		end
	else
		formspec=formspec.."field[0.8,1.5;7,1;channel;"..attrans("Digiline channel")..";"..minetest.formspec_escape(channel).."]"
	end
	return formspec.."button_exit[0.5,4.5;7,1;save;"..attrans("Save").."]"
end

function atc.execute_atc_command(id, train)
	local w, e = advtrains.atcjit.execute(id, train)
	if w then
		for i = 1, #w, 1 do
			atwarn(sid(id),w[i])
		end
	end
	if e then
		atwarn(sid(id),e)
		atc.train_reset_command(train, true)
	end
end

minetest.register_chatcommand("at_get_lua",{
	params = "<command>",
	description = "Compile the given ATC command into Lua code and show the given code",
	privs = {train_admin = true},
	func = function(name, params)
		local f, s = advtrains.atcjit.compile(params)
		if not f then	
			return false, s or ("Unknown compilation error")
		else
			return true, s
		end
	end,
})

--move table to desired place
advtrains.atc=atc