summaryrefslogtreecommitdiff
path: root/init.lua
blob: e72dcc8e48f87b929f38302cd40d7310aa50409f (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
--Just enough of the touchscreen to enable it to work here
local function process_command(meta,data,msg)
	if msg.command == "clear" then
		data = {}
	elseif msg.command == "addimage" then
		for _,i in pairs({"X","Y","W","H"}) do
			if not msg[i] or type(msg[i]) ~= "number" then
				return
			end
		end
		if not msg.texture_name or type(msg.texture_name) ~= "string" then
			return	
		end
		local field = {type="image",X=msg.X,Y=msg.Y,W=msg.W,H=msg.H,texture_name=minetest.formspec_escape(msg.texture_name)}
		table.insert(data,field)
	elseif msg.command == "addfield" then
		for _,i in pairs({"X","Y","W","H"}) do
			if not msg[i] or type(msg[i]) ~= "number" then
				return
			end
		end
		for _,i in pairs({"name","label","default"}) do
			if not msg[i] or type(msg[i]) ~= "string" then
				return
			end
		end
		local field = {type="field",X=msg.X,Y=msg.Y,W=msg.W,H=msg.H,name=minetest.formspec_escape(msg.name),label=minetest.formspec_escape(msg.label),default=minetest.formspec_escape(msg.default)}
		table.insert(data,field)
	elseif msg.command == "addpwdfield" then
		for _,i in pairs({"X","Y","W","H"}) do
			if not msg[i] or type(msg[i]) ~= "number" then
				return
			end
		end
		for _,i in pairs({"name","label"}) do
			if not msg[i] or type(msg[i]) ~= "string" then
				return
			end
		end
		local field = {type="pwdfield",X=msg.X,Y=msg.Y,W=msg.W,H=msg.H,name=minetest.formspec_escape(msg.name),label=minetest.formspec_escape(msg.label)}
		table.insert(data,field)
	elseif msg.command == "addtextarea" then
		for _,i in pairs({"X","Y","W","H"}) do
			if not msg[i] or type(msg[i]) ~= "number" then
				return
			end
		end
		for _,i in pairs({"name","label","default"}) do
			if not msg[i] or type(msg[i]) ~= "string" then
				return
			end
		end
		local field = {type="textarea",X=msg.X,Y=msg.Y,W=msg.W,H=msg.H,name=minetest.formspec_escape(msg.name),label=minetest.formspec_escape(msg.label),default=minetest.formspec_escape(msg.default)}
		table.insert(data,field)
	elseif msg.command == "addlabel" then
		for _,i in pairs({"X","Y"}) do
			if not msg[i] or type(msg[i]) ~= "number" then
				return
			end
		end
		if not msg.label or type(msg.label) ~= "string" then
			return	
		end
		local field = {type="label",X=msg.X,Y=msg.Y,label=minetest.formspec_escape(msg.label)}
		table.insert(data,field)
	elseif msg.command == "addvertlabel" then
		for _,i in pairs({"X","Y"}) do
			if not msg[i] or type(msg[i]) ~= "number" then
				return
			end
		end
		if not msg.label or type(msg.label) ~= "string" then
			return	
		end
		local field = {type="vertlabel",X=msg.X,Y=msg.Y,label=minetest.formspec_escape(msg.label)}
		table.insert(data,field)
	elseif msg.command == "addbutton" then
		for _,i in pairs({"X","Y","W","H"}) do
			if not msg[i] or type(msg[i]) ~= "number" then
				return
			end
		end
		for _,i in pairs({"name","label"}) do
			if not msg[i] or type(msg[i]) ~= "string" then
				return
			end
		end
		local field = {type="button",X=msg.X,Y=msg.Y,W=msg.W,H=msg.H,name=minetest.formspec_escape(msg.name),label=minetest.formspec_escape(msg.label)}
		table.insert(data,field)
	elseif msg.command == "addbutton_exit" then
		for _,i in pairs({"X","Y","W","H"}) do
			if not msg[i] or type(msg[i]) ~= "number" then
				return
			end
		end
		for _,i in pairs({"name","label"}) do
			if not msg[i] or type(msg[i]) ~= "string" then
				return
			end
		end
		local field = {type="button_exit",X=msg.X,Y=msg.Y,W=msg.W,H=msg.H,name=minetest.formspec_escape(msg.name),label=minetest.formspec_escape(msg.label)}
		table.insert(data,field)
	elseif msg.command == "addimage_button" then
		for _,i in pairs({"X","Y","W","H"}) do
			if not msg[i] or type(msg[i]) ~= "number" then
				return
			end
		end
		for _,i in pairs({"image","name","label"}) do
			if not msg[i] or type(msg[i]) ~= "string" then
				return
			end
		end
		local field = {type="image_button",X=msg.X,Y=msg.Y,W=msg.W,H=msg.H,image=minetest.formspec_escape(msg.image),name=minetest.formspec_escape(msg.name),label=minetest.formspec_escape(msg.label)}
		table.insert(data,field)
	elseif msg.command == "addimage_button_exit" then
		for _,i in pairs({"X","Y","W","H"}) do
			if not msg[i] or type(msg[i]) ~= "number" then
				return
			end
		end
		for _,i in pairs({"image","name","label"}) do
			if not msg[i] or type(msg[i]) ~= "string" then
				return
			end
		end
		local field = {type="image_button_exit",X=msg.X,Y=msg.Y,W=msg.W,H=msg.H,image=minetest.formspec_escape(msg.image),name=minetest.formspec_escape(msg.name),label=minetest.formspec_escape(msg.label)}
		table.insert(data,field)
	elseif msg.command == "adddropdown" then
		for _,i in pairs({"X","Y","W","H","selected_id"}) do
			if not msg[i] or type(msg[i]) ~= "number" then
				return
			end
		end
		if not msg.name or type(msg.name) ~= "string" then
			return
		end
		if not msg.choices or type(msg.choices) ~= "table" or #msg.choices < 1 then
			return
		end
		local field = {type="dropdown",X=msg.X,Y=msg.Y,W=msg.W,H=msg.H,name=msg.name,selected_id=msg.selected_id,choices=msg.choices}
		table.insert(data,field)
	elseif msg.command == "lock" then
		meta:set_int("locked",1)
	elseif msg.command == "unlock" then
		meta:set_int("locked",0)
	end
	return data
end

local function update_ts_formspec(pos,data)
	local meta = minetest.get_meta(pos)
	local fs = "size[10,8]"..
		"background[0,0;0,0;ltc4000e_formspec_bg.png;true]"
	for _,field in pairs(data) do
		if field.type == "image" then
			fs = fs..string.format("image[%s,%s;%s,%s;%s]",field.X,field.Y,field.W,field.H,field.texture_name)
		elseif field.type == "field" then
			fs = fs..string.format("field[%s,%s;%s,%s;%s;%s;%s]",field.X,field.Y,field.W,field.H,field.name,field.label,field.default)
		elseif field.type == "pwdfield" then
			fs = fs..string.format("pwdfield[%s,%s;%s,%s;%s;%s]",field.X,field.Y,field.W,field.H,field.name,field.label)
		elseif field.type == "textarea" then
			fs = fs..string.format("textarea[%s,%s;%s,%s;%s;%s;%s]",field.X,field.Y,field.W,field.H,field.name,field.label,field.default)
		elseif field.type == "label" then
			fs = fs..string.format("label[%s,%s;%s]",field.X,field.Y,field.label)
		elseif field.type == "vertlabel" then
			fs = fs..string.format("vertlabel[%s,%s;%s]",field.X,field.Y,field.label)
		elseif field.type == "button" then
			fs = fs..string.format("button[%s,%s;%s,%s;%s;%s]",field.X,field.Y,field.W,field.H,field.name,field.label)
		elseif field.type == "button_exit" then
			fs = fs..string.format("button_exit[%s,%s;%s,%s;%s;%s]",field.X,field.Y,field.W,field.H,field.name,field.label)
		elseif field.type == "image_button" then
			fs = fs..string.format("image_button[%s,%s;%s,%s;%s;%s;%s]",field.X,field.Y,field.W,field.H,field.image,field.name,field.label)
		elseif field.type == "image_button_exit" then
			fs = fs..string.format("image_button_exit[%s,%s;%s,%s;%s;%s;%s]",field.X,field.Y,field.W,field.H,field.image,field.name,field.label)
		elseif field.type == "dropdown" then
			local choices = ""
			for _,i in ipairs(field.choices) do
				if type(i) == "string" then
					choices = choices..minetest.formspec_escape(i)..","
				end
			end
			choices = string.sub(choices,1,-2)
			fs = fs..string.format("dropdown[%s,%s;%s,%s;%s;%s;%s]",field.X,field.Y,field.W,field.H,field.name,choices,field.selected_id)
		end
	end
	meta:set_string("formspec",fs)
end

local function ts_on_digiline_receive(pos,msg)
	local meta = minetest.get_meta(pos)
	if type(msg) ~= "table" then return end
	local data = minetest.deserialize(meta:get_string("data")) or {}
	if msg.command then
		data = process_command(meta,data,msg)
	else
		for _,i in ipairs(msg) do
			if i.command then
				data = process_command(meta,data,i) or data
			end
		end
	end
	meta:set_string("data",minetest.serialize(data))
	update_ts_formspec(pos,data)
end

--Load the (mostly unmodified) firmware
local fw = loadfile(minetest.get_modpath("ltc4000e")..DIR_DELIM.."fw.lua")

local function run(pos,event)
	--Initialize environment
	local context = {}
	local meta = minetest.get_meta(pos)
	context.mem = minetest.deserialize(meta:get_string("mem")) or {}
	context.event = event
	context.string = string
	context.table = table
	context.math = math
	context.pairs = pairs
	context.ipairs = ipairs
	context.tostring = tostring
	context.tonumber = tonumber
	context.type = type
	context.print = print
	context.os = {}
	for k,v in pairs(os) do
		context.os[k] = v
	end

	function context.os.datetable()
		return(os.date("*t",os.time()))
	end

	function context.digiline_send(channel,msg)
		if channel == "touchscreen" then
			--Touchscreen is integrated into the chip
			ts_on_digiline_receive(pos,msg)
		else
			--Not an integrated peripheral, so send the message
			digiline:receptor_send(pos,digiline.rules.default,channel,msg)
		end
	end

	function context.interrupt(time,iid)
		if iid == "gapout" then
			--This one can have the time changed on-the-fly, so it has to be done with node timers
			local timer = minetest.get_node_timer(pos)
			if time then
				timer:start(time)
			else
				timer:stop()
			end
		else
			local event = {}
			event.type = "interrupt"
			event.iid = iid
			minetest.after(time,run,pos,event)
		end
	end

	--This is where the magic happens...
	setfenv(fw,context)

	--Run code
	local success,err = pcall(fw)
	if not success then
		print("Error in LTC-4000E execution, aborting: "..err)
		return
	end

	--Save memory after execution
	meta:set_string("mem",minetest.serialize(context.mem))
end

local function ts_on_receive_fields(pos,formname,fields,sender)
	local meta = minetest.get_meta(pos)
	local playername = sender:get_player_name()
	local locked = meta:get_int("locked") == 1
	local can_bypass = minetest.check_player_privs(playername,{protection_bypass=true})
	local is_protected = minetest.is_protected(pos,playername)
	if (locked and is_protected) and not can_bypass then
		minetest.record_protection_violation(pos,playername)
		minetest.chat_send_player(playername,"You are not authorized to use this controller.")
		return
	end
	local event = {}
	event.type = "digiline"
	event.channel = "touchscreen"
	event.msg = fields
	run(pos,event)
end

local nodebox = {
	{ -0.35, -0.45, 0.35, 0.35, 0.45, 0.85 }
}


minetest.register_node("ltc4000e:controller", {
	tiles = {
		"ltc4000e_cabinet_sides.png",
		"ltc4000e_cabinet_sides.png",
		"ltc4000e_cabinet_sides.png",
		"ltc4000e_cabinet_sides.png",
		"ltc4000e_cabinet_sides.png",
		"ltc4000e_cabinet_front.png",
	},
	description = "LTC-4000E Traffic Signal Controller",
	paramtype = "light",
	paramtype2 = "facedir",
	drawtype = "nodebox",
	groups = {dig_immediate=2},
	sounds = default.node_sound_stone_defaults(),
	on_construct = function(pos)
		local event = {type="program"}
		run(pos,event)
	end,
	on_timer = function(pos)
		local event = {}
		event.type = "interrupt"
		event.iid = "gapout"
		run(pos,event)
	end,
	node_box = {
		type = "fixed",
		fixed = nodebox
    	},
	selection_box = {
		type = "fixed",
		fixed = nodebox
    	},
	on_receive_fields = ts_on_receive_fields,
	digiline = 
	{
		receptor = {},
		effector = {
			action = function(pos,_,channel,msg)
					local event = {}
					event.type = "digiline"
					event.channel = channel
					event.msg = msg
					run(pos,event)
				end
		},
	},
})

--Make sure lights don't "stall" if unloaded
minetest.register_lbm({
	label = "Restart LTC-4000E timers",
	name = "ltc4000e:restart_timers",
	nodenames = {"ltc4000e:controller"},
	run_at_every_load = true,
	action = function(pos)
		local meta = minetest.get_meta(pos)
		local mem = minetest.deserialize(meta:get_string("mem"))
		if mem.cycle then
			local event = {}
			event.type = "interrupt"
			event.iid = "tick"
			run(pos,event)
		end
	end
})