aboutsummaryrefslogtreecommitdiff
path: root/advtrains/init.lua
blob: 99849cbf89a6e06045391fadb73ea03a6511c33f (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
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
-- Boilerplate to support localized strings if intllib mod is installed.
if minetest.get_modpath("intllib") then
    attrans = intllib.Getter()
else
    attrans = function(s,a,...)a={a,...}return s:gsub("@(%d+)",function(n)return a[tonumber(n)]end)end
end

--advtrains

--Constant for maximum connection value/division of the circle
AT_CMAX = 16

advtrains = {trains={}, wagon_save={}, player_to_train_mapping={}}

--pcall
local no_action=false

local function reload_saves()
	atwarn("Restoring saved state in 1 second...")
	no_action=true
	--read last save state and continue, as if server was restarted
	for aoi, le in pairs(minetest.luaentities) do
		if le.is_wagon then
			le.object:remove()
		end
	end
	minetest.after(1, function()
		advtrains.load()
		atwarn("Reload successful!")
		advtrains.ndb.restore_all()
	end)
end

function advtrains.pcall(fun)
	if no_action then return end
	
	local succ, return1, return2, return3, return4=xpcall(fun, function(err)
			if advtrains.atprint_context_tid then
				local train=advtrains.trains[advtrains.atprint_context_tid_full]
				advtrains.dumppath(train.path)
				atwarn("Dumping last debug outputs: ", err)
				atprint("Train state: index",train.index,"end_index", train.end_index,"| max_iot", train.max_index_on_track, "min_iot", train.min_index_on_track, "<> pe_min", train.path_extent_min,"pe_max", train.path_extent_max)
				if minetest.settings:get_bool("advtrains_enable_debugging") then
					advtrains.drb_dump(advtrains.atprint_context_tid)
				end
			end
			atwarn("Lua Error occured: ", err)
			atwarn(debug.traceback())
		end)
	if not succ then
		reload_saves()
	else
		return return1, return2, return3, return4
	end
end


advtrains.modpath = minetest.get_modpath("advtrains")

function advtrains.print_concat_table(a)
	local str=""
	local stra=""
	local t
	for i=1,20 do
		t=a[i]
		if t==nil then
			stra=stra.."nil "
		else
			str=str..stra
			stra=""
			if type(t)=="table" then
				if t.x and t.y and t.z then
					str=str..minetest.pos_to_string(t)
				else
					str=str..dump(t)
				end
			elseif type(t)=="boolean" then
				if t then
					str=str.."true"
				else
					str=str.."false"
				end
			else
				str=str..t
			end
			str=str.." "
		end
	end
	return str
end

atprint=function() end
atdebug=function() end
atlog=function(t, ...)
	local text=advtrains.print_concat_table({t, ...})
	minetest.log("action", "[advtrains]"..text)
end
atwarn=function(t, ...)
	local text=advtrains.print_concat_table({t, ...})
	minetest.log("warning", "[advtrains]"..text)
	minetest.chat_send_all("[advtrains] -!- "..text)
end
sid=function(id) if id then return string.sub(id, -6) end end

--TEMP
atdebug=function(t, ...)
		local text=advtrains.print_concat_table({t, ...})
		minetest.log("action", "[advtrains]"..text)
		minetest.chat_send_all("[advtrains]"..text)
	end

if minetest.settings:get_bool("advtrains_enable_debugging") then
	atprint=function(t, ...)
		local context=advtrains.atprint_context_tid or ""
		if not context then return end
		local text=advtrains.print_concat_table({t, ...})
		advtrains.drb_record(context, text)
		
		--atlog("@@",advtrains.atprint_context_tid,t,...)
	end
	atdebug=function(t, ...)
		local text=advtrains.print_concat_table({t, ...})
		minetest.log("action", "[advtrains]"..text)
		minetest.chat_send_all("[advtrains]"..text)
	end
	dofile(advtrains.modpath.."/debugringbuffer.lua")
end

dofile(advtrains.modpath.."/helpers.lua");
--dofile(advtrains.modpath.."/debugitems.lua");

advtrains.meseconrules = 
{{x=0,  y=0,  z=-1},
 {x=1,  y=0,  z=0},
 {x=-1, y=0,  z=0},
 {x=0,  y=0,  z=1},
 {x=1,  y=1,  z=0},
 {x=1,  y=-1, z=0},
 {x=-1, y=1,  z=0},
 {x=-1, y=-1, z=0},
 {x=0,  y=1,  z=1},
 {x=0,  y=-1, z=1},
 {x=0,  y=1,  z=-1},
 {x=0,  y=-1, z=-1},
 {x=0, y=-2, z=0}}
 

dofile(advtrains.modpath.."/path.lua")
dofile(advtrains.modpath.."/trainlogic.lua")
dofile(advtrains.modpath.."/trainhud.lua")
dofile(advtrains.modpath.."/trackplacer.lua")
dofile(advtrains.modpath.."/tracks.lua")
dofile(advtrains.modpath.."/atc.lua")
dofile(advtrains.modpath.."/wagons.lua")

dofile(advtrains.modpath.."/trackdb_legacy.lua")
dofile(advtrains.modpath.."/nodedb.lua")
dofile(advtrains.modpath.."/couple.lua")

dofile(advtrains.modpath.."/signals.lua")
dofile(advtrains.modpath.."/misc_nodes.lua")
dofile(advtrains.modpath.."/crafting.lua")
dofile(advtrains.modpath.."/craft_items.lua")

if minetest.global_exists("digtron") then
	dofile(advtrains.modpath.."/digtron.lua")
end

--load/save

advtrains.fpath=minetest.get_worldpath().."/advtrains"

function advtrains.avt_load()
	local file, err = io.open(advtrains.fpath, "r")
	if not file then
		minetest.log("error", " Failed to read advtrains save data from file "..advtrains.fpath..": "..(err or "Unknown Error"))
	else
		local tbl = minetest.deserialize(file:read("*a"))
		if type(tbl) == "table" then
			if tbl.version then
				--congrats, we have the new save format.
				advtrains.trains = tbl.trains
				advtrains.wagon_save = tbl.wagon_save
				advtrains.player_to_train_mapping = tbl.ptmap or {}
				advtrains.ndb.load_data(tbl.ndb)
				advtrains.atc.load_data(tbl.atc)
				--remove wagon_save entries that are not part of a train
				local todel=advtrains.merge_tables(advtrains.wagon_save)
				for tid, train in pairs(advtrains.trains) do
					for _, wid in ipairs(train.trainparts) do
						todel[wid]=nil
					end
				end
				for wid, _ in pairs(todel) do
					atwarn("Removing unused wagon", wid, "from wagon_save table.")
					advtrains.wagon_save[wid]=nil
				end
			else
				--oh no, its the old one...
				advtrains.trains=tbl
				--load ATC
				advtrains.fpath_atc=minetest.get_worldpath().."/advtrains_atc"
				local file, err = io.open(advtrains.fpath_atc, "r")
				if not file then
					local er=err or "Unknown Error"
					atprint("Failed loading advtrains atc save file "..er)
				else
					local tbl = minetest.deserialize(file:read("*a"))
					if type(tbl) == "table" then
						advtrains.atc.controllers=tbl.controllers
					end
					file:close()
				end
				--load wagon saves
				advtrains.fpath_ws=minetest.get_worldpath().."/advtrains_wagon_save"
				local file, err = io.open(advtrains.fpath_ws, "r")
				if not file then
					local er=err or "Unknown Error"
					atprint("Failed loading advtrains save file "..er)
				else
					local tbl = minetest.deserialize(file:read("*a"))
					if type(tbl) == "table" then
						advtrains.wagon_save=tbl
					end
					file:close()
				end
			end
		else
			minetest.log("error", " Failed to deserialize advtrains save data: Not a table!")
		end
		file:close()
	end
end

advtrains.avt_save = function(remove_players_from_wagons)
	--atprint("saving")
	--No more invalidating.
	--Instead, remove path a.s.o from the saved table manually
	
	-- update wagon saves
	for _,wagon in pairs(minetest.luaentities) do
		if wagon.is_wagon and wagon.initialized then
			wagon:get_staticdata()
		end
	end
	--cross out userdata
	for w_id, data in pairs(advtrains.wagon_save) do
		data.name=nil
		data.object=nil
		if data.driver then
			data.driver_name=data.driver:get_player_name()
			data.driver=nil
		else
			data.driver_name=nil
		end
		if data.discouple then
			data.discouple.object:remove()
			data.discouple=nil
		end
		if remove_players_from_wagons then
			data.seatp={}
		end
	end
	if remove_players_from_wagons then
		advtrains.player_to_train_mapping={}
	end
	
	local tmp_trains={}
	for id, train in pairs(advtrains.trains) do
		--first, deep_copy the train
		local v=advtrains.save_keys(train, {
			"last_pos", "last_pos_prev", "movedir", "velocity", "tarvelocity",
			"trainparts", "savedpos_off_track_index_offset", "recently_collided_with_env",
			"atc_brake_target", "atc_wait_finish", "atc_command", "atc_delay", "door_state"
		})
		--then invalidate
		if train.index then
			v.restore_add_index=train.index-math.floor(train.index+1)
		end
		--then save it
		tmp_trains[id]=v
	end
	
	--versions:
	-- 1 - Initial new save format.
	local save_tbl={
		trains = tmp_trains,
		wagon_save = advtrains.wagon_save,
		ptmap = advtrains.player_to_train_mapping,
		atc = advtrains.atc.save_data(),
		ndb = advtrains.ndb.save_data(),
		version = 1,
	}
	local datastr = minetest.serialize(save_tbl)
	if not datastr then
		minetest.log("error", " Failed to serialize advtrains save data!")
		return
	end
	local file, err = io.open(advtrains.fpath, "w")
	if err then
		minetest.log("error", " Failed to write advtrains save data to file "..advtrains.fpath..": "..(err or "Unknown Error"))
		return
	end
	file:write(datastr)
	file:close()
end

--## MAIN LOOP ##--
--Calls all subsequent main tasks of both advtrains and atlatc
local init_load=false
local save_interval=20
local save_timer=save_interval
advtrains.mainloop_runcnt=0

minetest.register_globalstep(function(dtime_mt)
	return advtrains.pcall(function()
		advtrains.mainloop_runcnt=advtrains.mainloop_runcnt+1
		--atprint("Running the main loop, runcnt",advtrains.mainloop_runcnt)
		--call load once. see advtrains.load() comment
		if not init_load then
			advtrains.load()
		end
		--limit dtime: if trains move too far in one step, automation may cause stuck and wrongly braking trains
		local dtime=dtime_mt
		if dtime>0.2 then
			atprint("Limiting dtime to 0.2!")
			dtime=0.2
		end
		
		advtrains.mainloop_trainlogic(dtime)
		if advtrains_itm_mainloop then
			advtrains_itm_mainloop(dtime)
		end
		if atlatc then
			atlatc.mainloop_stepcode(dtime)
			atlatc.interrupt.mainloop(dtime)
		end
		
		
		--trigger a save when necessary
		save_timer=save_timer-dtime
		if save_timer<=0 then
			local t=os.clock()
			--save
			advtrains.save()
			save_timer=save_interval
			atprintbm("saving", t)
		end
	end)
end)

--if something goes wrong in these functions, there is no help. no pcall here.

--## MAIN LOAD ROUTINE ##
-- Causes the loading of everything
-- first time called in main loop (after the init phase) because luaautomation has to initialize first.
function advtrains.load()
	advtrains.avt_load() --loading advtrains. includes ndb at advtrains.ndb.load_data()
	if atlatc then
		atlatc.load() --includes interrupts
	end
	if advtrains_itm_init then
		advtrains_itm_init()
	end
	init_load=true
	no_action=false
	atlog("[load_all]Loaded advtrains save files")
end

--## MAIN SAVE ROUTINE ##
-- Causes the saving of everything
function advtrains.save(remove_players_from_wagons)
	if not init_load then
		--wait... we haven't loaded yet?!
		atwarn("Instructed to save() but load() was never called!")
		return
	end
	advtrains.avt_save(remove_players_from_wagons) --saving advtrains. includes ndb at advtrains.ndb.save_data()
	if atlatc then
		atlatc.save()
	end
	atprint("[save_all]Saved advtrains save files")
end
minetest.register_on_shutdown(advtrains.save)

-- This chat command provides a solution to the problem known on the LinuxWorks server
-- There are many players that joined a single time, got on a train and then left forever
-- These players still occupy seats in the trains.
minetest.register_chatcommand("at_empty_seats",
	{
        params = "", -- Short parameter description
        description = "Detach all players, especially the offline ones, from all trains. Use only when no one serious is on a train.", -- Full description
        privs = {train_operator=true, server=true}, -- Require the "privs" privilege to run
        func = function(name, param)
			return advtrains.pcall(function()
				atwarn("Data is being saved. While saving, advtrains will remove the players from trains. Save files will be reloaded afterwards!")
				advtrains.save(true)
				reload_saves()
			end)
        end,
})
-- This chat command solves another problem: Trains getting randomly stuck.
minetest.register_chatcommand("at_reroute",
	{
        params = "", 
        description = "Delete all train routes, force them to recalculate", 
        privs = {train_operator=true}, -- Only train operator is required, since this is relatively safe.
        func = function(name, param)
			return advtrains.pcall(function()
				atwarn("Train routes will be recalculated now")
				advtrains.save(false)
				reload_saves()
			end)
        end,
})