summaryrefslogtreecommitdiff
path: root/item_transport.lua
blob: f01506bc5b2494af90adf106bb8d4c89b32084da (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
dofile(pipeworks.modpath.."/compat.lua")

--and an extra function for getting the right-facing vector
local function facedir_to_right_dir(facedir)
	
	--find the other directions
	local backdir = minetest.facedir_to_dir(facedir)
	local topdir = ({[0]={x=0, y=1, z=0},
									{x=0, y=0, z=1},
									{x=0, y=0, z=-1},
									{x=1, y=0, z=0},
									{x=-1, y=0, z=0},
									{x=0, y=-1, z=0}})[math.floor(facedir/4)]
	
	--return a cross product
		return {x=topdir.y*backdir.z - backdir.y*topdir.z,
						y=topdir.z*backdir.x - backdir.z*topdir.x,
						z=topdir.x*backdir.y - backdir.x*topdir.y}
end

local fakePlayer = {
    get_player_name = function() return ":pipeworks" end,
    -- any other player functions called by allow_metadata_inventory_take anywhere...
    -- perhaps a custom metaclass that errors specially when fakePlayer.<property> is not found?
}

function pipeworks.tube_item(pos, item)
	-- Take item in any format
	local stack = ItemStack(item)
	local obj = minetest.add_entity(pos, "pipeworks:tubed_item")
	obj:get_luaentity():set_item(stack:to_string())
	return obj
end

-- adding two tube functions
-- can_remove(pos,node,stack,dir) returns the maximum number of items of that stack that can be removed
-- remove_items(pos,node,stack,dir,count) removes count items and returns them
-- both optional w/ sensible defaults and fallback to normal allow_* function
-- XXX: possibly change insert_object to insert_item

local function set_filter_infotext(data, meta)
	local infotext = data.wise_desc.." Filter-Injector"
	if meta:get_int("slotseq_mode") == 2 then
		infotext = infotext .. " (slot #"..meta:get_int("slotseq_index").." next)"
	end
	meta:set_string("infotext", infotext)
end

local function set_filter_formspec(data, meta)
	local itemname = data.wise_desc.." Filter-Injector"
	local formspec = "size[8,8.5]"..
			"item_image[0,0;1,1;pipeworks:"..data.name.."]"..
			"label[1,0;"..minetest.formspec_escape(itemname).."]"..
			"label[0,1;Prefer item types:]"..
			"list[current_name;main;0,1.5;8,2;]"
	local slotseq_mode = meta:get_int("slotseq_mode")
	if slotseq_mode == 1 then
		formspec = formspec .. "button[0,3.5;4,1;slotseq_mode2;Sequence slots Randomly]"
	elseif slotseq_mode == 2 then
		formspec = formspec .. "button[0,3.5;4,1;slotseq_mode0;Sequence slots by Rotation]"
	else
		formspec = formspec .. "button[0,3.5;4,1;slotseq_mode1;Sequence slots by Priority]"
	end
	formspec = formspec .. "list[current_player;main;0,4.5;8,4;]"
	meta:set_string("formspec", formspec)
end

local function grabAndFire(data,slotseq_mode,filtmeta,frominv,frominvname,frompos,fromnode,filtername,fromtube,fromdef,dir,all)
	local sposes = {}
	for spos,stack in ipairs(frominv:get_list(frominvname)) do
		local matches
		if filtername == "" then
			matches = stack:get_name() ~= ""
		else
			matches = stack:get_name() == filtername
		end
		if matches then table.insert(sposes, spos) end
	end
	if #sposes == 0 then return false end
	if slotseq_mode == 1 then
		for i = #sposes, 2, -1 do
			local j = math.random(i)
			local t = sposes[j]
			sposes[j] = sposes[i]
			sposes[i] = t
		end
	elseif slotseq_mode == 2 then
		local headpos = filtmeta:get_int("slotseq_index")
		table.sort(sposes, function (a, b)
			if a >= headpos then
				if b < headpos then return true end
			else
				if b >= headpos then return false end
			end
			return a < b
		end)
	end
	for _, spos in ipairs(sposes) do
			local stack = frominv:get_stack(frominvname, spos)
			local doRemove = stack:get_count()
			if fromtube.can_remove then
				doRemove = fromtube.can_remove(frompos, fromnode, stack, dir)
			elseif fromdef.allow_metadata_inventory_take then
				doRemove = fromdef.allow_metadata_inventory_take(frompos, frominvname,spos, stack, fakePlayer)
			end
			-- stupid lack of continue statements grumble
			if doRemove > 0 then
				if slotseq_mode == 2 then
					local nextpos = spos + 1
					if nextpos > frominv:get_size(frominvname) then
						nextpos = 1
					end
					filtmeta:set_int("slotseq_index", nextpos)
					set_filter_infotext(data, filtmeta)
				end
				local item
				local count
				if all then
					count = math.min(stack:get_count(), doRemove)
				else
					count = 1
				end
				if fromtube.remove_items then
					-- it could be the entire stack...
					item = fromtube.remove_items(frompos, fromnode, stack, dir, count)
				else
					item = stack:take_item(count)
					frominv:set_stack(frominvname, spos, stack)
					if fromdef.on_metadata_inventory_take then
						fromdef.on_metadata_inventory_take(frompos, frominvname, spos, item, fakePlayer)
					end
				end
				local item1 = pipeworks.tube_item(vector.add(frompos, vector.multiply(dir, 1.4)), item)
				item1:get_luaentity().start_pos = vector.add(frompos, dir)
				item1:setvelocity(dir)
				item1:setacceleration({x=0, y=0, z=0})
				return true-- only fire one item, please
			end
	end
	return false
end

local function punch_filter(data, filtpos, filtnode)
	local filtmeta = minetest.get_meta(filtpos)
	local filtinv = filtmeta:get_inventory()
	local dir = facedir_to_right_dir(filtnode.param2)
	local frompos = {x=filtpos.x - dir.x, y=filtpos.y - dir.y, z=filtpos.z - dir.z}
	local fromnode = minetest.get_node(frompos)
	if not fromnode then return end
	local fromdef = minetest.registered_nodes[fromnode.name]
	if not fromdef then return end
	local fromtube = fromdef.tube
	if not (fromtube and fromtube.input_inventory) then return end
	local filters = {}
	for _, filterstack in ipairs(filtinv:get_list("main")) do
		local filtername = filterstack:get_name()
		if filtername ~= "" then table.insert(filters, filtername) end
	end
	if #filters == 0 then table.insert(filters, "") end
	local slotseq_mode = filtmeta:get_int("slotseq_mode")
	local frommeta = minetest.get_meta(frompos)
	local frominv = frommeta:get_inventory()
	if fromtube.before_filter then fromtube.before_filter(frompos) end
	for _, frominvname in ipairs(type(fromtube.input_inventory) == "table" and fromtube.input_inventory or {fromtube.input_inventory}) do
		local done = false
		for _, filtername in ipairs(filters) do
			if grabAndFire(data, slotseq_mode, filtmeta, frominv, frominvname, frompos, fromnode, filtername, fromtube, fromdef, dir, data.stackwise) then
				done = true
				break
			end
		end
		if done then break end
	end
	if fromtube.after_filter then fromtube.after_filter(frompos) end
end

for _, data in ipairs({
	{
		name = "filter",
		wise_desc = "Itemwise",
		stackwise = false,
	},
	{
		name = "mese_filter",
		wise_desc = "Stackwise",
		stackwise = true,
	},
}) do
	minetest.register_node("pipeworks:"..data.name, {
		description = data.wise_desc.." Filter-Injector",
		tiles = {
			"pipeworks_"..data.name.."_top.png",
			"pipeworks_"..data.name.."_top.png",
			"pipeworks_"..data.name.."_output.png",
			"pipeworks_"..data.name.."_input.png",
			"pipeworks_"..data.name.."_side.png",
			"pipeworks_"..data.name.."_top.png",
		},
		paramtype2 = "facedir",
		groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2,tubedevice=1,mesecon=2},
		legacy_facedir_simple = true,
		sounds = default.node_sound_wood_defaults(),
		on_construct = function(pos)
			local meta = minetest.get_meta(pos)
			set_filter_formspec(data, meta)
			set_filter_infotext(data, meta)
			local inv = meta:get_inventory()
			inv:set_size("main", 8*2)
		end,
		on_receive_fields = function(pos, formname, fields, sender)
			local meta = minetest.get_meta(pos)
			for k, _ in pairs(fields) do
				if k:sub(1, 12) == "slotseq_mode" then
					local mode = tonumber(k:sub(13, 13))
					meta:set_int("slotseq_mode", mode)
					meta:set_int("slotseq_index", mode == 2 and 1 or 0)
				end
			end
			set_filter_formspec(data, meta)
			set_filter_infotext(data, meta)
		end,
		can_dig = function(pos,player)
			local meta = minetest.get_meta(pos)
			local inv = meta:get_inventory()
			return inv:is_empty("main")
		end,
		after_place_node = function(pos)
			pipeworks.scan_for_tube_objects(pos)
		end,
		after_dig_node = function(pos)
			pipeworks.scan_for_tube_objects(pos)
		end,
		mesecons = {
			effector = {
				action_on = function(pos, node)
					punch_filter(data, pos, node)
				end,
			},
		},
		tube={connect_sides={right=1}},
		on_punch = function (pos, node, puncher)
			punch_filter(data, pos, node)
		end,
	})
end

local function roundpos(pos)
	return {x=math.floor(pos.x+0.5),y=math.floor(pos.y+0.5),z=math.floor(pos.z+0.5)}
end

local function addVect(pos,vect)
	return {x=pos.x+vect.x,y=pos.y+vect.y,z=pos.z+vect.z}
end

local adjlist={{x=0,y=0,z=1},{x=0,y=0,z=-1},{x=0,y=1,z=0},{x=0,y=-1,z=0},{x=1,y=0,z=0},{x=-1,y=0,z=0}}

function pipeworks.notvel(tbl, vel)
	local tbl2={}
	for _,val in ipairs(tbl) do
		if val.x ~= -vel.x or val.y ~= -vel.y or val.z ~= -vel.z then table.insert(tbl2, val) end
	end
	return tbl2
end

local function go_next(pos, velocity, stack)
	local chests = {}
	local tubes = {}
	local cnode = minetest.get_node(pos)
	local cmeta = minetest.get_meta(pos)
	local n
	local can_go
	local speed = math.abs(velocity.x + velocity.y + velocity.z)
	local vel = {x = velocity.x/speed, y = velocity.y/speed, z = velocity.z/speed,speed=speed}
	if speed >= 4.1 then
		speed = 4
	elseif speed >= 1.1 then
		speed = speed-0.1
	else
		speed = 1
	end
	vel.speed = speed
	if minetest.registered_nodes[cnode.name] and minetest.registered_nodes[cnode.name].tube and minetest.registered_nodes[cnode.name].tube.can_go then
		can_go = minetest.registered_nodes[cnode.name].tube.can_go(pos, cnode, vel, stack)
	else
		can_go = pipeworks.notvel(adjlist, vel)
	end
	local meta = nil
	for _,vect in ipairs(can_go) do
		local npos = addVect(pos,vect)
		local node = minetest.get_node(npos)
		local tube_receiver = minetest.get_item_group(node.name,"tubedevice_receiver")
		meta = minetest.get_meta(npos)
		local tubelike = meta:get_int("tubelike")
		if tube_receiver == 1 then
			if minetest.registered_nodes[node.name].tube and
				minetest.registered_nodes[node.name].tube.can_insert and
				minetest.registered_nodes[node.name].tube.can_insert(npos, node, stack, vect) then
				local i = #chests + 1
				chests[i] = {}
				chests[i].pos = npos
				chests[i].vect = vect
			end
		elseif tubelike == 1 then
			local i = #tubes + 1
			tubes[i] = {}
			tubes[i].pos = npos
			tubes[i].vect = vect
		end
	end
	if chests[1] == nil then--no chests found
		if tubes[1] == nil then
			return 0
		else
			n = (cmeta:get_int("tubedir")%(#tubes)) + 1
			if pipeworks.enable_cyclic_mode then
				cmeta:set_int("tubedir",n)
			end
			velocity.x = tubes[n].vect.x*vel.speed
			velocity.y = tubes[n].vect.y*vel.speed
			velocity.z = tubes[n].vect.z*vel.speed
		end
	else
		n = (cmeta:get_int("tubedir")%(#chests))+1
		if pipeworks.enable_cyclic_mode then
			cmeta:set_int("tubedir",n)
		end
		velocity.x = chests[n].vect.x*speed
		velocity.y = chests[n].vect.y*speed
		velocity.z = chests[n].vect.z*speed
	end
	return 1
end

minetest.register_entity("pipeworks:tubed_item", {
	initial_properties = {
		hp_max = 1,
		physical = false,
--		collisionbox = {0,0,0,0,0,0},
		collisionbox = {0.1, 0.1, 0.1, 0.1, 0.1, 0.1},
		visual = "wielditem",
		visual_size = {x = 0.15, y = 0.15},
		textures = {""},
		spritediv = {x = 1, y = 1},
		initial_sprite_basepos = {x = 0, y = 0},
		is_visible = false,
		start_pos = {},
		route = {},
		removed = false
	},
	
	itemstring = '',
	physical_state = false,

	set_item = function(self, itemstring)
		self.itemstring = itemstring
		local stack = ItemStack(itemstring)
		self.object:set_properties({
			is_visible = true,
			textures = { stack:get_name() },
		})
		local def = stack:get_definition()
		self.object:setyaw((def and def.type == "node") and 0 or math.pi * 0.25)
	end,

	get_staticdata = function(self)
		if self.start_pos == nil or self.removed then
			return
		end
		local velocity = self.object:getvelocity()
		self.object:setpos(self.start_pos)
		return	minetest.serialize({
			itemstring = self.itemstring,
			velocity = velocity,
			start_pos = self.start_pos
		})
	end,

	on_activate = function(self, staticdata)
		if  staticdata=="" or staticdata==nil then return end
		local item = minetest.deserialize(staticdata)
		local stack = ItemStack(item.itemstring)
		local itemtable = stack:to_table()
		local itemname = nil
		if itemtable then
			itemname = stack:to_table().name
		end
		
		if itemname then 
		self.start_pos=item.start_pos
		self.object:setvelocity(item.velocity)
		self.object:setacceleration({x=0, y=0, z=0})
		self.object:setpos(item.start_pos)
		end
		self:set_item(item.itemstring)
	end,
	
	remove = function(self)
		self.object:remove()
		self.removed = true
		self.itemstring = ''
	end,

	on_step = function(self, dtime)
		if self.removed then
			return
		end
		if self.start_pos == nil then
			local pos = self.object:getpos()
			self.start_pos = roundpos(pos)
		end
		local pos = self.object:getpos()
		local node = minetest.get_node(pos)
		local meta = minetest.get_meta(pos)
		local tubelike = meta:get_int("tubelike")
		local stack = ItemStack(self.itemstring)
		local drop_pos = nil
		
		local velocity = self.object:getvelocity()
	
		if velocity == nil then return end
	
		local velocitycopy = {x = velocity.x, y = velocity.y, z = velocity.z}
		
		local moved = false
		local speed = math.abs(velocity.x + velocity.y + velocity.z)
		local vel = {x = velocity.x / speed, y = velocity.y / speed, z = velocity.z / speed, speed = speed}
		
		if math.abs(vel.x) == 1 then
			local next_node = math.abs(pos.x - self.start_pos.x)
			if next_node >= 1 then 
				self.start_pos.x = self.start_pos.x + vel.x
				moved = true
			end
		elseif math.abs(vel.y) == 1 then
		local next_node = math.abs(pos.y - self.start_pos.y)
			if next_node >= 1 then 
				self.start_pos.y = self.start_pos.y + vel.y
				moved = true
			end	
		elseif math.abs(vel.z) == 1 then
			local next_node = math.abs(pos.z - self.start_pos.z)
			if next_node >= 1 then 
				self.start_pos.z = self.start_pos.z + vel.z
				moved = true
			end
		end
		
		local sposcopy = {x = self.start_pos.x, y = self.start_pos.y, z = self.start_pos.z}
		
		node = minetest.get_node(self.start_pos)
		if moved and minetest.get_item_group(node.name, "tubedevice_receiver") == 1 then
			local leftover = nil
			if minetest.registered_nodes[node.name].tube and minetest.registered_nodes[node.name].tube.insert_object then
				leftover = minetest.registered_nodes[node.name].tube.insert_object(self.start_pos, node, stack, vel)
			else
				leftover = stack
			end
			if leftover:is_empty() then
				self:remove()
				return
			end
			velocity.x = -velocity.x
			velocity.y = -velocity.y
			velocity.z = -velocity.z
			self.object:setvelocity(velocity)
			self:set_item(leftover:to_string())
			return
		end
		
		if moved then
			if go_next (self.start_pos, velocity, stack) == 0 then
				drop_pos = minetest.find_node_near(vector.add(self.start_pos, velocity), 1, "air")
				if drop_pos then 
					minetest.item_drop(stack, "", drop_pos)
					self:remove()
				end
			end
		end
		
		if velocity.x~=velocitycopy.x or velocity.y~=velocitycopy.y or velocity.z~=velocitycopy.z or 
				self.start_pos.x~=sposcopy.x or self.start_pos.y~=sposcopy.y or self.start_pos.z~=sposcopy.z then
			self.object:setpos(self.start_pos)
			self.object:setvelocity(velocity)
		end
	end
})

if minetest.get_modpath("mesecons_mvps") ~= nil then
	local function add_table(table,toadd)
		local i = 1
		while true do
			o = table[i]
			if o == toadd then return end
			if o == nil then break end
			i = i+1
		end
		table[i] = toadd
	end
	mesecon:register_mvps_unmov("pipeworks:tubed_item")
	mesecon:register_on_mvps_move(function(moved_nodes)
		local objects_to_move = {}
		for _, n in ipairs(moved_nodes) do
			local objects = minetest.get_objects_inside_radius(n.oldpos, 1)
			for _, obj in ipairs(objects) do
				local entity = obj:get_luaentity()
				if entity and entity.name == "pipeworks:tubed_item" then
					--objects_to_move[#objects_to_move+1] = obj
					add_table(objects_to_move, obj)
				end
			end
		end
		if #objects_to_move > 0 then
			local dir = vector.subtract(moved_nodes[1].pos, moved_nodes[1].oldpos)
			for _, obj in ipairs(objects_to_move) do
				local entity = obj:get_luaentity()
				obj:setpos(vector.add(obj:getpos(), dir))
				entity.start_pos = vector.add(entity.start_pos, dir)
			end
		end
	end)
end