summaryrefslogtreecommitdiff
path: root/drive_entity.lua
blob: c1e42851090490cfd7fccbfa428d27916e7fc36e (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
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
celevator.drives.entity = {
	name = "Drive",
	description = "Normal entity-based drive",
	nname = "celevator:drive",
	buzzsoundhandles = {},
	movementsoundhandles = {},
	movementsoundstate = {},
	entityinfo = {},
	sheaverefs = {},
}

local function update_ui(pos)
	local meta = minetest.get_meta(pos)
	local apos = tonumber(meta:get_string("apos")) or 0
	local status = "Idle"
	local vel = tonumber(meta:get_string("vel")) or 0
	local state = meta:get_string("state")
	if state == "running" and vel > 0 then
		status = string.format("Running: Up, %0.02f m/s",vel)
	elseif state == "running" and vel < 0 then
		status = string.format("Running: Down, %0.02f m/s",math.abs(vel))
	elseif state == "fakerunning" and vel > 0 then
		status = string.format("Running (simulated): Up, %0.02f m/s",vel)
	elseif state == "fakerunning" and vel < 0 then
		status = string.format("Running (simulated): Down, %0.02f m/s",math.abs(vel))
	end
	meta:set_string("infotext",string.format("Drive - %s - Position: %0.02f m",status,apos))
end

local function playbuzz(pos)
	local hash = minetest.hash_node_position(pos)
	if celevator.drives.entity.buzzsoundhandles[hash] == "cancel" then return end
	celevator.drives.entity.buzzsoundhandles[hash] = minetest.sound_play("celevator_drive_run",{
		pos = pos,
		loop = true,
		gain = 0.2,
	})
end

local function startbuzz(pos)
	local hash = minetest.hash_node_position(pos)
	if celevator.drives.entity.buzzsoundhandles[hash] == "cancel" then
		celevator.drives.entity.buzzsoundhandles[hash] = nil
		return
	end
	if celevator.drives.entity.buzzsoundhandles[hash] then return end
	celevator.drives.entity.buzzsoundhandles[hash] = "pending"
	minetest.after(0.5,playbuzz,pos)
end

local function stopbuzz(pos)
	local hash = minetest.hash_node_position(pos)
	if not celevator.drives.entity.buzzsoundhandles[hash] then return end
	if celevator.drives.entity.buzzsoundhandles[hash] == "pending" then
		celevator.drives.entity.buzzsoundhandles[hash] = "cancel"
	end
	if type(celevator.drives.entity.buzzsoundhandles[hash]) ~= "string" then
		minetest.sound_stop(celevator.drives.entity.buzzsoundhandles[hash])
		celevator.drives.entity.buzzsoundhandles[hash] = nil
	end
end

local function motorsound(pos,newstate)
	local hash = minetest.hash_node_position(pos)
	local oldstate = celevator.drives.entity.movementsoundstate[hash]
	oldstate = oldstate or "idle"
	if oldstate == newstate then return end
	local carid = minetest.get_meta(pos):get_int("carid")
	local carinfo = minetest.deserialize(celevator.storage:get_string(string.format("car%d",carid)))
	if not (carinfo and carinfo.machinepos) then return end
	local oldhandle = celevator.drives.entity.movementsoundhandles[hash]
	if newstate == "slow" then
		if oldstate == "idle" then
			minetest.sound_play("celevator_brake_release",{
				pos = carinfo.machinepos,
				gain = 1,
			},true)
			celevator.drives.entity.movementsoundhandles[hash] = minetest.sound_play("celevator_motor_slow",{
				pos = carinfo.machinepos,
				loop = true,
				gain = 1,
			})
		elseif oldstate == "accel" or oldstate == "fast" or oldstate == "decel" then
			if oldhandle then minetest.sound_stop(oldhandle) end
			celevator.drives.entity.movementsoundhandles[hash] = minetest.sound_play("celevator_motor_slow",{
				pos = carinfo.machinepos,
				loop = true,
				gain = 1,
			})
		end
	elseif newstate == "accel" then
		if oldhandle then minetest.sound_stop(oldhandle) end
		celevator.drives.entity.movementsoundhandles[hash] = minetest.sound_play("celevator_motor_accel",{
			pos = carinfo.machinepos,
			gain = 1,
		})
	elseif newstate == "fast" then
		if oldhandle then minetest.sound_stop(oldhandle) end
		celevator.drives.entity.movementsoundhandles[hash] = minetest.sound_play("celevator_motor_fast",{
			pos = carinfo.machinepos,
			loop = true,
			gain = 1,
		})
	elseif newstate == "decel" then
		if oldhandle then minetest.sound_stop(oldhandle) end
		celevator.drives.entity.movementsoundhandles[hash] = minetest.sound_play("celevator_motor_decel",{
			pos = carinfo.machinepos,
			gain = 1,
		})
	elseif newstate == "idle" then
		if oldhandle then minetest.sound_stop(oldhandle) end
		minetest.sound_play("celevator_brake_apply",{
			pos = carinfo.machinepos,
			gain = 1,
		},true)
	end
	celevator.drives.entity.movementsoundstate[hash] = newstate
end

local function compareexchangesound(pos,compare,new)
	local hash = minetest.hash_node_position(pos)
	local oldstate = celevator.drives.entity.movementsoundstate[hash]
	if oldstate == compare then
		motorsound(pos,new)
	end
end

local function accelsound(pos)
	motorsound(pos,"slow")
	minetest.after(1,compareexchangesound,pos,"slow","accel")
	minetest.after(4,compareexchangesound,pos,"accel","fast")
end

local function decelsound(pos)
	motorsound(pos,"decel")
	minetest.after(2,compareexchangesound,pos,"decel","slow")
end

minetest.register_node("celevator:drive",{
	description = "Elevator "..celevator.drives.entity.name,
	groups = {
		cracky = 1,
		_celevator_drive = 1,
	},
	tiles = {
		"celevator_cabinet_sides.png",
		"celevator_cabinet_sides.png",
		"celevator_cabinet_sides.png",
		"celevator_cabinet_sides.png",
		"celevator_cabinet_sides.png",
		"celevator_drive_front.png",
	},
	paramtype = "light",
	paramtype2 = "facedir",
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{-0.4,-0.4,-0.1,0.4,0.4,0.5},
			{-0.5,-0.3,0.4,-0.4,-0.22,0.32},
			{-0.5,0.22,0.4,-0.4,0.3,0.32},
		},
	},
	_celevator_drive_type = "entity",
	after_place_node = function(pos)
		local meta = minetest.get_meta(pos)
		meta:set_string("apos","0")
		meta:set_string("dpos","0")
		meta:set_string("vel","0")
		meta:set_string("maxvel","0.2")
		meta:set_string("state","uninit")
		meta:set_string("startpos","0")
		meta:set_string("doorstate","closed")
		meta:mark_as_private({"apos","dpos","vel","maxvel","state","startpos","doorstate"})
		update_ui(pos)
	end,
	on_destruct = stopbuzz,
})

minetest.register_entity("celevator:car_moving",{
	initial_properties = {
		visual = "wielditem",
		visual_size = vector.new(0.667,0.667,0.667),
		wield_item = "default:dirt",
		static_save = false,
		glow = minetest.LIGHT_MAX,
		pointable = false,
	},
})

function celevator.drives.entity.gathercar(pos,yaw,nodes)
	if not nodes then nodes = {} end
	local hash = minetest.hash_node_position(pos)
	if nodes[hash] then return nodes end
	nodes[hash] = true
	if minetest.get_item_group(celevator.get_node(pos).name,"_connects_xp") == 1 then
		celevator.drives.entity.gathercar(vector.add(pos,vector.rotate_around_axis(vector.new(1,0,0),vector.new(0,1,0),yaw)),yaw,nodes)
	end
	if minetest.get_item_group(celevator.get_node(pos).name,"_connects_xm") == 1 then
		celevator.drives.entity.gathercar(vector.add(pos,vector.rotate_around_axis(vector.new(-1,0,0),vector.new(0,1,0),yaw)),yaw,nodes)
	end
	if minetest.get_item_group(celevator.get_node(pos).name,"_connects_yp") == 1 then
		celevator.drives.entity.gathercar(vector.add(pos,vector.new(0,1,0)),yaw,nodes)
	end
	if minetest.get_item_group(celevator.get_node(pos).name,"_connects_ym") == 1 then
		celevator.drives.entity.gathercar(vector.add(pos,vector.new(0,-1,0)),yaw,nodes)
	end
	if minetest.get_item_group(celevator.get_node(pos).name,"_connects_zp") == 1 then
		celevator.drives.entity.gathercar(vector.add(pos,vector.rotate_around_axis(vector.new(0,0,1),vector.new(0,1,0),yaw)),yaw,nodes)
	end
	if minetest.get_item_group(celevator.get_node(pos).name,"_connects_zm") == 1 then
		celevator.drives.entity.gathercar(vector.add(pos,vector.rotate_around_axis(vector.new(0,0,-1),vector.new(0,1,0),yaw)),yaw,nodes)
	end
	return nodes
end

function celevator.drives.entity.nodestoentities(nodes,ename)
	local refs = {}
	for _,pos in ipairs(nodes) do
		local node = celevator.get_node(pos)
		local attach = minetest.get_objects_inside_radius(pos,0.9)
		local eref = minetest.add_entity(pos,(ename or "celevator:car_moving"))
		eref:set_properties({
			wield_item = node.name,
		})
		eref:set_yaw(minetest.dir_to_yaw(minetest.fourdir_to_dir(node.param2)))
		table.insert(refs,eref)
		if node.name == "celevator:car_021" then
			local toppos = vector.add(pos,vector.new(0,1,0))
			local topattach = minetest.get_objects_inside_radius(toppos,0.9)
			for _,ref in pairs(topattach) do
				table.insert(attach,ref)
			end
		end
		if not ename then --If ename is set, something other than the car is moving
			for _,attachref in ipairs(attach) do
				local included = {
					["celevator:incar_pi_entity"] = true,
					["celevator:car_top_box"] = true,
					["celevator:car_door"] = true,
				}
				if attachref:get_luaentity() and included[attachref:get_luaentity().name] then
					table.insert(refs,attachref)
				else
					local attachpos = attachref:get_pos()
					local basepos = eref:get_pos()
					local attachoffset = vector.multiply(vector.subtract(attachpos,basepos),30)
					attachoffset = vector.rotate_around_axis(attachoffset,vector.new(0,-1,0),eref:get_yaw())
					attachref:set_attach(eref,"",attachoffset)
				end
			end
		end
		minetest.remove_node(pos)
	end
	return refs
end

function celevator.drives.entity.entitiestonodes(refs,carid)
	local ok = true
	for _,eref in ipairs(refs) do
		local pos = eref:get_pos()
		local top = false
		if pos and (eref:get_luaentity().name == "celevator:car_moving" or eref:get_luaentity().name == "celevator:hwdoor_moving") then
			pos = vector.round(pos)
			local node = {
				name = eref:get_properties().wield_item,
				param2 = minetest.dir_to_fourdir(minetest.yaw_to_dir(eref:get_yaw()))
			}
			if minetest.get_item_group(eref:get_properties().wield_item,"_connects_yp") ~= 1 then top = true end
			minetest.set_node(pos,node)
			eref:remove()
			if carid then celevator.get_meta(pos):set_int("carid",carid) end
		elseif pos and eref:get_luaentity().name == "celevator:incar_pi_entity" then
			pos = vector.new(pos.x,math.floor(pos.y+0.5),pos.z)
			eref:set_pos(pos)
		elseif not ok then
			eref:remove()
		else
			if not pos then ok = false end
		end
		if pos then
			for _,i in ipairs(minetest.get_objects_inside_radius(pos,1)) do
				i:set_velocity(vector.new(0,0,0))
				if i:is_player() then
					local ppos = i:get_pos()
					ppos.y=ppos.y-0.4
					if top then ppos.y = ppos.y+1.1 end
					i:set_pos(ppos)
					minetest.after(0.5,i.set_pos,i,ppos)
				elseif i:get_luaentity().name == "celevator:car_top_box" or i:get_luaentity().name == "celevator:car_door" then
					local epos = i:get_pos()
					epos.y = math.floor(epos.y+0.5)
					if i:get_luaentity().name == "celevator:car_top_box" then
						epos.y = epos.y+0.1
					end
					i:set_pos(epos)
				end
			end
		end
	end
	return ok
end

function celevator.drives.entity.step(dtime)
	local entitydrives_running = minetest.deserialize(celevator.storage:get_string("entitydrives_running")) or {}
	local save = false
	for i,hash in ipairs(entitydrives_running) do
		save = true
		local pos = minetest.get_position_from_hash(hash)
		local node = celevator.get_node(pos)
		local sound = false
		if node.name == "ignore" then
			minetest.forceload_block(pos,true)
		elseif node.name ~= "celevator:drive" then
			table.remove(entitydrives_running,i)
		else
			local meta = celevator.get_meta(pos)
			local carid = meta:get_int("carid")
			local state = meta:get_string("state")
			if not (state == "running" or state == "start" or state == "fakerunning") then
				table.remove(entitydrives_running,i)
			else
				local dpos = tonumber(meta:get_string("dpos")) or 0
				local maxvel = tonumber(meta:get_string("maxvel")) or 0.2
				local startpos = tonumber(meta:get_string("startpos")) or 0
				local origin = minetest.string_to_pos(meta:get_string("origin"))
				if not origin then
					minetest.log("error","[celevator] [entity drive] Invalid origin for drive at "..minetest.pos_to_string(pos))
					meta:set_string("fault","badorigin")
					table.remove(entitydrives_running,i)
					return
				end
				if state == "start" then
					if math.abs(dpos-startpos) > 0.1 then
						sound = true
						if maxvel > 0.2 then
							accelsound(pos)
						else
							motorsound(pos,"slow")
						end
					end
					local startv = vector.add(origin,vector.new(0,startpos,0))
					local hashes = celevator.drives.entity.gathercar(startv,minetest.dir_to_yaw(minetest.fourdir_to_dir(celevator.get_node(startv).param2)))
					local nodes = {}
					for carhash in pairs(hashes) do
						local carpos = minetest.get_position_from_hash(carhash)
						if vector.equals(startv,carpos) then
							table.insert(nodes,1,carpos) --0,0,0 node must be first in the list
						else
							table.insert(nodes,carpos)
						end
					end
					local carparam2 = celevator.get_node(nodes[1]).param2
					meta:set_int("carparam2",carparam2)
					local handles = celevator.drives.entity.nodestoentities(nodes)
					celevator.drives.entity.entityinfo[hash] = {
						handles = handles,
					}
					meta:set_string("state","running")
					celevator.drives.entity.sheavetoentity(carid)
				elseif state == "running" then
					if not celevator.drives.entity.entityinfo[hash] then
						meta:set_string("state","fakerunning")
						return
					end
					local handles = celevator.drives.entity.entityinfo[hash].handles
					if (not handles) or (not handles[1]:get_pos()) then
						meta:set_string("state","fakerunning")
						return
					end
					local apos = handles[1]:get_pos().y - origin.y
					local sheaverefs = celevator.drives.entity.sheaverefs[carid]
					if sheaverefs and sheaverefs[1] then
						local rotation = sheaverefs[1]:get_rotation()
						if rotation then
							rotation.z = math.pi*apos*-1
							sheaverefs[1]:set_rotation(rotation)
						end
					end
					local dremain = math.abs(dpos-apos)
					local dmoved = math.abs(apos-startpos)
					local vel
					if dremain < 0.01 then
						vel = 0
						meta:set_string("state","stopped")
						motorsound(pos,"idle")
						celevator.drives.entity.sheavetonode(carid)
						local ok = celevator.drives.entity.entitiestonodes(handles,carid)
						if not ok then
							local carparam2 = meta:get_int("carparam2")
							celevator.car.spawncar(vector.round(vector.add(origin,vector.new(0,apos,0))),minetest.dir_to_yaw(minetest.fourdir_to_dir(carparam2)),carid)
						end
						apos = math.floor(apos+0.5)
						minetest.after(0.25,celevator.drives.entity.updatecopformspec,pos)
					elseif dremain < 0.2 then
						vel = 0.2
					elseif dremain < 2*maxvel and dremain < dmoved then
						vel = math.min(dremain,maxvel)
						if celevator.drives.entity.movementsoundstate[hash] == "fast" or celevator.drives.entity.movementsoundstate[hash] == "accel" then
							decelsound(pos)
						end
					elseif dmoved+0.1 > maxvel then
						vel = maxvel
					else
						vel = dmoved+0.1
					end
					if dpos < apos then vel = 0-vel end
					for _,eref in ipairs(handles) do
						eref:set_velocity(vector.new(0,vel,0))
					end
					meta:set_string("apos",tostring(apos))
					sound = vel ~= 0
					meta:set_string("vel",tostring(vel))
				elseif state == "fakerunning" then
					local apos = tonumber(meta:get_string("apos")) or 0
					local sheaverefs = celevator.drives.entity.sheaverefs[carid]
					if sheaverefs and sheaverefs[1] then
						local rotation = sheaverefs[1]:get_rotation()
						if rotation then
							rotation.z = math.pi*apos*-1
							sheaverefs[1]:set_rotation(rotation)
						end
					end
					local dremain = math.abs(dpos-apos)
					local dmoved = math.abs(apos-startpos)
					local vel
					if dremain < 0.01 then
						vel = 0
						meta:set_string("state","stopped")
						motorsound(pos,"idle")
						celevator.drives.entity.sheavetonode(carid)
						local carparam2 = meta:get_int("carparam2")
						celevator.car.spawncar(vector.round(vector.add(origin,vector.new(0,apos,0))),minetest.dir_to_yaw(minetest.fourdir_to_dir(carparam2)),carid)
						apos = math.floor(apos+0.5)
						minetest.after(0.25,celevator.drives.entity.updatecopformspec,pos)
					elseif dremain < 0.2 then
						vel = 0.2
					elseif dremain < 2*maxvel and dremain < dmoved then
						vel = math.min(dremain,maxvel)
						if celevator.drives.entity.movementsoundstate[hash] == "fast" or celevator.drives.entity.movementsoundstate[hash] == "accel" then
							decelsound(pos)
						end
					elseif dmoved+0.1 > maxvel then
						vel = maxvel
					else
						vel = dmoved+0.1
					end
					if dpos < apos then vel = 0-vel end
					apos = apos+(vel*dtime)
					meta:set_string("apos",tostring(apos))
					sound = vel ~= 0
					meta:set_string("vel",tostring(vel))
				end
			end
		end
		update_ui(pos)
		if sound then
			startbuzz(pos)
		else
			stopbuzz(pos)
		end
	end
	if save then
		celevator.storage:set_string("entitydrives_running",minetest.serialize(entitydrives_running))
	end
end

minetest.register_globalstep(celevator.drives.entity.step)

function celevator.drives.entity.moveto(pos,target)
	local meta = celevator.get_meta(pos)
	meta:mark_as_private({"apos","dpos","vel","maxvel","state","startpos","doorstate"})
	local carid = celevator.get_meta(pos):get_int("carid")
	local carinfo = minetest.deserialize(celevator.storage:get_string(string.format("car%d",carid)))
	if not (carinfo and carinfo.machinepos) then return end
	local origin = minetest.string_to_pos(meta:get_string("origin"))
	if not origin then
		minetest.log("error","[celevator] [entity drive] Invalid origin for drive at "..minetest.pos_to_string(pos))
		meta:set_string("fault","badorigin")
		return
	end
	if target < 0 or origin.y + target > (carinfo.machinepos.y-3) then
		meta:set_string("fault","outofbounds")
		return
	end
	if meta:get_string("state") ~= "stopped" then
		local apos = tonumber(meta:get_string("apos"))
		local vel = tonumber(meta:get_string("vel"))
		if vel > 0 then
			if target < apos+(vel*2) then return end
		elseif vel < 0 then
			if target > apos-(vel*-2) then return end
		else
			return
		end
	end
	meta:set_string("dpos",tostring(target))
	if meta:get_string("state") == "stopped" then
		meta:set_string("state","start")
		meta:set_string("startpos",meta:get_string("apos"))
		local hash = minetest.hash_node_position(pos)
		local entitydrives_running = minetest.deserialize(celevator.storage:get_string("entitydrives_running")) or {}
		local running = false
		for _,dhash in ipairs(entitydrives_running) do
			if hash == dhash then
				running = true
				break
			end
		end
		if not running then
			table.insert(entitydrives_running,hash)
			celevator.storage:set_string("entitydrives_running",minetest.serialize(entitydrives_running))
			--Controller needs to see something so it knows the drive is running
			local apos = tonumber(meta:get_string("apos"))
			if apos and apos > target then
				meta:set_string("vel","-0.0001")
			else
				meta:set_string("vel","0.0001")
			end
		end
	end
end


function celevator.drives.entity.resetpos(pos)
	celevator.drives.entity.moveto(pos,0)
end

function celevator.drives.entity.estop(pos)
	local meta = celevator.get_meta(pos)
	if meta:get_string("state") ~= "running" then return end
	local apos = math.floor(tonumber(meta:get_string("apos"))+0.5)
	meta:set_string("dpos",tostring(apos))
	meta:set_string("apos",tostring(apos))
	local hash = minetest.hash_node_position(pos)
	local handles = celevator.drives.entity.entityinfo[hash].handles
	meta:set_string("state","stopped")
	meta:set_string("vel","0")
	local carid = meta:get_int("carid")
	celevator.drives.entity.entitiestonodes(handles,carid)
	stopbuzz(pos)
	motorsound(pos,"idle")
	if carid ~= 0 then celevator.drives.entity.sheavetonode(carid) end
	minetest.after(0.25,celevator.drives.entity.updatecopformspec,pos)
end


function celevator.drives.entity.setmaxvel(pos,maxvel)
	local meta = celevator.get_meta(pos)
	meta:set_string("maxvel",tostring(maxvel))
end


function celevator.drives.entity.rezero(pos)
	celevator.drives.entity.moveto(pos,0)
end

function celevator.drives.entity.getstatus(pos,call2)
	local node = minetest.get_node(pos)
	if node.name == "ignore" and not call2 then
		minetest.forceload_block(pos,true)
		return celevator.drives.entity.get_status(pos,true)
	elseif node.name ~= "celevator:drive" then
		minetest.log("error","[celevator] [entity drive] Could not load drive status at "..minetest.pos_to_string(pos))
		return {fault = "metaload"}
	else
		local meta = celevator.get_meta(pos)
		local ret = {}
		ret.apos = tonumber(meta:get_string("apos")) or 0
		ret.dpos = tonumber(meta:get_string("dpos")) or 0
		ret.vel = tonumber(meta:get_string("vel")) or 0
		ret.maxvel = tonumber(meta:get_string("maxvel")) or 0.2
		ret.state = meta:get_string("state")
		ret.doorstate = meta:get_string("doorstate")
		ret.fault = meta:get_string("fault")
		ret.neareststop = ret.apos+(ret.vel*2)
		if ret.fault == "" then ret.fault = nil end
		return ret
	end
end

function celevator.drives.entity.movedoors(drivepos,direction)
	local drivehash = minetest.hash_node_position(drivepos)
	local entitydrives_running = minetest.deserialize(celevator.storage:get_string("entitydrives_running")) or {}
	local drivemeta = celevator.get_meta(drivepos)
	for _,hash in pairs(entitydrives_running) do
		if drivehash == hash then
			minetest.log("error","[celevator] [entity drive] Attempted to open doors while drive at "..minetest.pos_to_string(drivepos).." was still moving")
			drivemeta:set_string("fault","doorinterlock")
			return
		end
	end
	local origin = minetest.string_to_pos(drivemeta:get_string("origin"))
	if not origin then
		minetest.log("error","[celevator] [entity drive] Invalid origin for drive at "..minetest.pos_to_string(drivepos))
		drivemeta:set_string("fault","badorigin")
		return
	end
	local apos = tonumber(drivemeta:get_string("apos")) or 0
	local carpos = vector.add(origin,vector.new(0,apos,0))
	local carnode = celevator.get_node(carpos)
	local hwdoorpos = vector.add(carpos,vector.rotate_around_axis(minetest.fourdir_to_dir(carnode.param2),vector.new(0,1,0),math.pi))
	if direction == "open" and (minetest.get_item_group(celevator.get_node(hwdoorpos).name,"_celevator_hwdoor_root") == 1 or drivemeta:get_string("doorstate") == "closing") then
		celevator.doors.hwopen(hwdoorpos,drivepos)
		drivemeta:set_string("doorstate","opening")
	elseif direction == "close" and celevator.get_node(hwdoorpos).name == "celevator:hwdoor_placeholder" then
		celevator.doors.hwclose(hwdoorpos,drivepos)
		drivemeta:set_string("doorstate","closing")
	end
end

function celevator.drives.entity.resetfault(pos)
	celevator.get_meta(pos):set_string("fault","")
end

function celevator.drives.entity.pibeep(drivepos)
	local drivemeta = celevator.get_meta(drivepos)
	local origin = minetest.string_to_pos(drivemeta:get_string("origin"))
	if not origin then
		minetest.log("error","[celevator] [entity drive] Invalid origin for drive at "..minetest.pos_to_string(drivepos))
		drivemeta:set_string("fault","badorigin")
		return
	end
	local apos = tonumber(drivemeta:get_string("apos")) or 0
	local beeppos = vector.add(origin,vector.new(0,apos+2,0))
	minetest.sound_play("celevator_pi_beep",{
		pos = beeppos,
		gain = 1,
	},true)
end

local function carsearch(pos)
	for i=1,500,1 do
		local searchpos = vector.subtract(pos,vector.new(0,i,0))
		local node = celevator.get_node(searchpos)
		if minetest.get_item_group(node.name,"_celevator_car") == 1 then
			local yaw = minetest.dir_to_yaw(minetest.fourdir_to_dir(node.param2))
			local offsettext = minetest.registered_nodes[node.name]._position
			local xoffset = tonumber(string.sub(offsettext,1,1))
			local yoffset = tonumber(string.sub(offsettext,2,2))
			local zoffset = tonumber(string.sub(offsettext,3,3))
			local offset = vector.new(xoffset,yoffset,zoffset)
			offset = vector.rotate_around_axis(offset,vector.new(0,1,0),yaw)
			return vector.subtract(searchpos,offset)
		end
	end
end

local function updatecarpos(pos)
	local meta = celevator.get_meta(pos)
	if meta:get_int("carid") == 0 then return end
	local carpos = carsearch(pos)
	if carpos then
		meta:set_string("origin",minetest.pos_to_string(carpos))
		celevator.get_meta(carpos):set_string("machinepos",minetest.pos_to_string(pos))
		meta:set_string("infotext",string.format("Using car with origin %s",minetest.pos_to_string(carpos)))
		local carid = meta:get_int("carid")
		local carinfo = minetest.deserialize(celevator.storage:get_string(string.format("car%d",carid)))
		if not carinfo then return end
		carinfo.origin = carpos
		celevator.storage:set_string(string.format("car%d",carid),minetest.serialize(carinfo))
		local drivepos = celevator.controller.finddrive(carinfo.controllerpos)
		if drivepos then
			local drivemeta = celevator.get_meta(drivepos)
			if drivemeta:get_string("state") == "uninit" then
				drivemeta:set_string("origin",minetest.pos_to_string(carpos))
				drivemeta:set_string("state","stopped")
				drivemeta:set_int("carid",carid)
			end
		end
		local caryaw = minetest.dir_to_yaw(minetest.fourdir_to_dir(celevator.get_node(carpos).param2))
		local carnodes = celevator.drives.entity.gathercar(carpos,caryaw)
		for hash in pairs(carnodes) do
			local carmeta = celevator.get_meta(minetest.get_position_from_hash(hash))
			carmeta:set_int("carid",carid)
		end
	else
		meta:set_string("infotext","No car found! Punch to try again")
	end
end

minetest.register_node("celevator:machine",{
	description = "Elevator Hoist Machine",
	groups = {
		dig_immediate = 2,
		_celevator_machine = 1,
	},
	paramtype = "light",
	paramtype2 = "4dir",
	tiles = {
		"celevator_machine_top.png",
		"celevator_machine_top.png",
		"celevator_machine_sides.png",
		"celevator_machine_sides.png",
		"celevator_machine_front.png",
		"celevator_machine_front.png",
	},
	inventory_image = "celevator_machine_inventory.png",
	wield_image = "celevator_machine_inventory.png",
	wield_scale = vector.new(1,1,3),
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{-0.3,-0.5,-0.2,0.3,0.4,0.2}, -- Main body
			{-0.2,0.4,-0.2,0.2,0.5,0.2}, -- Top of circle
			{-0.4,-0.1,-0.2,-0.3,0.3,0.2}, -- Left of circle
			{0.3,-0.1,-0.2,0.4,0.3,0.2}, -- Right of circle
			{-0.42,0.075,-0.22,0.42,0.125,0.22}, -- Sealing flanges
			{0.3,-0.3,-0.1,0.35,-0.1,0.1}, -- Bearing cap opposite motor
			{-0.35,-0.3,-0.1,-0.3,-0.1,0.1}, -- Bearing cap on motor side
			{-0.1,0,-0.5,0.1,0.2,-0.2}, -- Shaft to sheave
			{-0.15,-0.05,0.2,0.15,0.25,0.25}, -- Bearing cap opposite sheave
			{-0.15,-0.05,-0.25,0.15,0.25,-0.2}, -- Bearing cap on sheave side
			{-0.5,-0.25,-0.05,-0.35,-0.15,0.05} -- Shaft from motor
		},
	},
	selection_box = {
		type = "fixed",
		fixed = {
			{-1.5,-0.5,-0.5,0.5,0.5,0.5},
			{-0.5,-0.5,-0.8,0.5,0.5,-0.5},
		},
	},
	after_place_node = function(pos,player)
		if not player:is_player() then
			minetest.remove_node(pos)
			return true
		end
		local newnode = minetest.get_node(pos)
		local facedir = minetest.dir_to_yaw(minetest.fourdir_to_dir(newnode.param2))
		local motorpos = vector.add(pos,vector.rotate_around_axis(vector.new(-1,0,0),vector.new(0,1,0),facedir))
		local motorreplaces = minetest.get_node(motorpos).name
		local sheavepos = vector.add(pos,vector.rotate_around_axis(vector.new(0,0,-1),vector.new(0,1,0),facedir))
		local sheavereplaces = minetest.get_node(sheavepos).name
		local name = player:get_player_name()
		if not (minetest.registered_nodes[motorreplaces] and minetest.registered_nodes[motorreplaces].buildable_to) then
			minetest.chat_send_player(name,"Can't place machine here - no room for the motor (to the left)!")
			minetest.remove_node(pos)
			return true
		end
		if minetest.is_protected(motorpos,name) and not minetest.check_player_privs(name,{protection_bypass=true}) then
			minetest.chat_send_player(name,"Can't place machine here - space for the motor (to the left) is protected!")
			minetest.record_protection_violation(motorpos,name)
			minetest.remove_node(pos)
			return true
		end
		if not (minetest.registered_nodes[sheavereplaces] and minetest.registered_nodes[sheavereplaces].buildable_to) then
			minetest.chat_send_player(name,"Can't place machine here - no room for the sheave (in front)!")
			minetest.remove_node(pos)
			return true
		end
		if minetest.is_protected(sheavepos,name) and not minetest.check_player_privs(name,{protection_bypass=true}) then
			minetest.chat_send_player(name,"Can't place machine here - space for the sheave (in front) is protected!")
			minetest.record_protection_violation(sheavepos,name)
			minetest.remove_node(pos)
			return true
		end
		local meta = minetest.get_meta(pos)
		meta:set_string("formspec","formspec_version[7]size[8,5]field[0.5,0.5;7,1;carid;Car ID;]button[3,3.5;2,1;save;Save]")
		minetest.set_node(motorpos,{name="celevator:motor",param2=newnode.param2})
		minetest.set_node(sheavepos,{name="celevator:sheave",param2=newnode.param2})
	end,
	after_dig_node = function(pos,node)
		local facedir = minetest.dir_to_yaw(minetest.fourdir_to_dir(node.param2))
		local motorpos = vector.add(pos,vector.rotate_around_axis(vector.new(-1,0,0),vector.new(0,1,0),facedir))
		if minetest.get_node(motorpos).name == "celevator:motor" then
			minetest.remove_node(motorpos)
		end
		local sheavepos = vector.add(pos,vector.rotate_around_axis(vector.new(0,0,-1),vector.new(0,1,0),facedir))
		if minetest.get_node(sheavepos).name == "celevator:sheave" then
			minetest.remove_node(sheavepos)
		end
		local erefs = minetest.get_objects_inside_radius(sheavepos,0.5)
		for _,ref in pairs(erefs) do
			if ref:get_luaentity().name == "celevator:sheave_moving" then
				ref:remove()
			end
		end
	end,
	on_punch = function(pos)
		local meta = minetest.get_meta(pos)
		if not minetest.string_to_pos(meta:get_string("origin")) then
			updatecarpos(pos)
		end
	end,
	on_receive_fields = function(pos,_,fields)
		if tonumber(fields.carid) then
			local carid = tonumber(fields.carid)
			local carinfo = minetest.deserialize(celevator.storage:get_string(string.format("car%d",carid)))
			if not carinfo then return end
			carinfo.machinepos = pos
			celevator.storage:set_string(string.format("car%d",carid),minetest.serialize(carinfo))
			local meta = minetest.get_meta(pos)
			meta:set_int("carid",carid)
			meta:set_string("formspec","")
			updatecarpos(pos)
		end
	end,
})

minetest.register_node("celevator:motor",{
	description = "Hoist Motor (you hacker you!)",
	groups = {
		not_in_creative_inventory = 1,
	},
	drop = "",
	paramtype = "light",
	paramtype2 = "4dir",
	tiles = {
		"celevator_machine_top.png",
		"celevator_machine_top.png",
		"celevator_motor_sides.png",
		"celevator_motor_sides.png",
		"celevator_machine_top.png",
		"celevator_machine_top.png",
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{-0.5,-0.5,-0.3,0.1,0.1,0.3}, -- Motor body
			{0.1,-0.25,-0.05,0.5,-0.15,0.05}, -- Shaft
			{0.3,-0.4,-0.2,0.35,0,0.2}, -- Brake disc
			{0.275,-0.3,-0.1,0.375,-0.1,0.1}, -- Brake disc clamp
			{0.2,-0.5,0.15,0.45,0.1,0.3}, -- Brake housing
			{-0.4,0.1,-0.2,0,0.3,0.2}, -- Junction box
		},
	},
	selection_box = {
		type = "fixed",
		fixed = {},
	},
})

minetest.register_node("celevator:sheave",{
	description = "Sheave (you hacker you!)",
	groups = {
		not_in_creative_inventory = 1,
	},
	drop = "",
	paramtype = "light",
	paramtype2 = "4dir",
	tiles = {
		"celevator_sheave_sides.png^[transformR90",
		"celevator_sheave_sides.png^[transformR270",
		"celevator_sheave_sides.png",
		"celevator_sheave_sides.png^[transformR180",
		"celevator_sheave_front.png",
		"celevator_sheave_front.png",
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{-0.3,-0.2,0.2,0.3,0.4,0.5},
			{-0.4,-0.1,0.2,-0.3,0.3,0.5},
			{0.3,-0.1,0.2,0.4,0.3,0.5},
			{-0.2,0.4,0.2,0.2,0.5,0.5},
			{-0.2,-0.3,0.2,0.2,-0.2,0.5},
		},
	},
	selection_box = {
		type = "fixed",
		fixed = {},
	},
})

minetest.register_node("celevator:sheave_centered",{
	description = "Centered Sheave (you hacker you!)",
	groups = {
		not_in_creative_inventory = 1,
	},
	drop = "",
	paramtype = "light",
	paramtype2 = "4dir",
	tiles = {
		"celevator_sheave_sides.png^[transformR90",
		"celevator_sheave_sides.png^[transformR270",
		"celevator_sheave_sides.png",
		"celevator_sheave_sides.png^[transformR180",
		"celevator_sheave_front_centered.png",
		"celevator_sheave_front_centered.png",
	},
	drawtype = "nodebox",
	node_box = {
		type = "fixed",
		fixed = {
			{-0.3,-0.3,0.2,0.3,0.3,0.5},
			{-0.4,-0.2,0.2,-0.3,0.2,0.5},
			{0.3,-0.2,0.2,0.4,0.2,0.5},
			{-0.2,0.3,0.2,0.2,0.4,0.5},
			{-0.2,-0.4,0.2,0.2,-0.3,0.5},
		},
	},
	selection_box = {
		type = "fixed",
		fixed = {},
	},
})

minetest.register_entity("celevator:sheave_moving",{
	initial_properties = {
		visual = "wielditem",
		visual_size = vector.new(0.667,0.667,0.667),
		wield_item = "celevator:sheave_centered",
		static_save = false,
		pointable = false,
	},
})

function celevator.drives.entity.sheavetoentity(carid)
	local carinfo = minetest.deserialize(celevator.storage:get_string(string.format("car%d",carid)))
	if not (carinfo and carinfo.machinepos) then return end
	local dir = minetest.fourdir_to_dir(celevator.get_node(carinfo.machinepos).param2)
	local pos = vector.add(carinfo.machinepos,vector.multiply(dir,-1))
	minetest.set_node(pos,{
		name = "celevator:sheave",
		param2 = minetest.dir_to_fourdir(dir),
	})
	local sheaverefs = celevator.drives.entity.nodestoentities({pos},"celevator:sheave_moving")
	celevator.drives.entity.sheaverefs[carid] = sheaverefs
	sheaverefs[1]:set_properties({wield_item = "celevator:sheave_centered"})
	sheaverefs[1]:set_pos(vector.add(pos,vector.new(0,0.1,0)))
end

function celevator.drives.entity.sheavetonode(carid)
	local carinfo = minetest.deserialize(celevator.storage:get_string(string.format("car%d",carid)))
	if not (carinfo and carinfo.machinepos) then return end
	local dir = minetest.fourdir_to_dir(celevator.get_node(carinfo.machinepos).param2)
	local pos = vector.add(carinfo.machinepos,vector.multiply(dir,-1))
	local erefs = celevator.drives.entity.sheaverefs[carid]
	if erefs and erefs[1] then
		erefs[1]:remove()
	end
	minetest.set_node(pos,{
		name = "celevator:sheave",
		param2 = minetest.dir_to_fourdir(dir),
	})
end

function celevator.drives.entity.updatecopformspec(drivepos)
	local entitydrives_running = minetest.deserialize(celevator.storage:get_string("entitydrives_running")) or {}
	if entitydrives_running[minetest.hash_node_position(drivepos)] then return end
	local drivemeta = celevator.get_meta(drivepos)
	local carid = drivemeta:get_int("carid")
	if carid == 0 then return end
	local carinfo = minetest.deserialize(celevator.storage:get_string(string.format("car%d",carid)))
	if not carinfo then return end
	local copformspec = celevator.get_meta(carinfo.controllerpos):get_string("copformspec")
	local switchformspec = celevator.get_meta(carinfo.controllerpos):get_string("switchformspec")
	local origin = minetest.string_to_pos(drivemeta:get_string("origin"))
	if not origin then
		minetest.log("error","[celevator] [entity drive] Invalid origin for drive at "..minetest.pos_to_string(drivepos))
		drivemeta:set_string("fault","badorigin")
		return
	end
	local apos = tonumber(drivemeta:get_string("apos")) or 0
	if apos == math.floor(apos) then
		local carpos = vector.add(origin,vector.new(0,apos,0))
		local carnodes = celevator.drives.entity.gathercar(carpos,minetest.dir_to_yaw(minetest.fourdir_to_dir(celevator.get_node(carpos).param2)))
		for hash in pairs(carnodes) do
			local piecepos = minetest.get_position_from_hash(hash)
			local piece = celevator.get_node(piecepos)
			if piece.name == "celevator:car_010" then
				celevator.get_meta(piecepos):set_string("formspec",copformspec)
			elseif piece.name == "celevator:car_000" then
				celevator.get_meta(piecepos):set_string("formspec",switchformspec)
			end
		end
	end
end