summaryrefslogtreecommitdiff
path: root/gpu.lua
blob: 87ff6ea093b851bcf088dafde5b61a80469af2a6 (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
local font = dofile(minetest.get_modpath("digistuff")..DIR_DELIM.."gpu-font.lua")

local function explodebits(input)
	local output = {}
	for i=0,7,1 do
		output[i] = input%(2^(i+1)) >= 2^i
	end
	return output
end

local function implodebits(input)
	local output = 0
	for i=0,7,1 do
		output = output + (input[i] and 2^i or 0)
	end
	return output
end

local function rgbtohsv(r,g,b)
	r = r/255
	g = g/255
	b = b/255
	max = math.max(r,g,b)
	min = math.min(r,g,b)
	delta = max-min
	local hue = 0
	if delta > 0 then
		if max == r then
			hue = (g-b)/delta
			hue = (hue%6)*60
		elseif max == g then
			hue = (b-r)/delta
			hue = 60*(hue+2)
		elseif max == b then
			hue = (r-g)/delta
			hue = 60*(hue+4)
		end
		hue = hue/360
	end
	local sat = 0
	if max > 0 then
		sat = delta/max
	end
	return math.floor(hue*255),math.floor(sat*255),math.floor(max*255)
end

local function hsvtorgb(h,s,v)
	h = h/255*360
	s = s/255
	v = v/255
	local c = s*v
	local x = (h/60)%2
	x = 1-math.abs(x-1)
	x = x*c
	local m = v-c
	local r = 0
	local g = 0
	local b = 0
	if h < 60 then
		r = c
		g = x
	elseif h < 120 then
		r = x
		g = c
	elseif h < 180 then
		g = c
		b = x
	elseif h < 240 then
		g = x
		b = c
	elseif h < 300 then
		r = x
		b = c
	else
		r = c
		b = x 
	end
	r = r+m
	g = g+m
	b = b+m
	return math.floor(r*255),math.floor(g*255),math.floor(b*255)
end

local function bitwiseblend(srcr,dstr,srcg,dstg,srcb,dstb,mode)
	local srbits = explodebits(srcr)
	local sgbits = explodebits(srcg)
	local sbbits = explodebits(srcb)
	local drbits = explodebits(dstr)
	local dgbits = explodebits(dstg)
	local dbbits = explodebits(dstb)
	for i=0,7,1 do
		if mode == "and" then
			drbits[i] = srbits[i] and drbits[i]
			dgbits[i] = sgbits[i] and dgbits[i]
			dbbits[i] = sbbits[i] and dbbits[i]
		elseif mode == "or" then
			drbits[i] = srbits[i] or drbits[i]
			dgbits[i] = sgbits[i] or dgbits[i]
			dbbits[i] = sbbits[i] or dbbits[i]
		elseif mode == "xor" then
			drbits[i] = srbits[i] ~= drbits[i]
			dgbits[i] = sgbits[i] ~= dgbits[i]
			dbbits[i] = sbbits[i] ~= dbbits[i]
		elseif mode == "xnor" then
			drbits[i] = srbits[i] == drbits[i]
			dgbits[i] = sgbits[i] == dgbits[i]
			dbbits[i] = sbbits[i] == dbbits[i]
		elseif mode == "not" then
			drbits[i] = not srbits[i]
			dgbits[i] = not sgbits[i]
			dbbits[i] = not sbbits[i]
		elseif mode == "nand" then
			drbits[i] = not (srbits[i] and drbits[i])
			dgbits[i] = not (sgbits[i] and dgbits[i])
			dbbits[i] = not (sbbits[i] and dbbits[i])
		elseif mode == "nor" then
			drbits[i] = not (srbits[i] or drbits[i])
			dgbits[i] = not (sgbits[i] or dgbits[i])
			dbbits[i] = not (sbbits[i] or dbbits[i])
		end
	end
	return string.format("%02X%02X%02X",implodebits(drbits),implodebits(dgbits),implodebits(dbbits))
end

local function blend(src,dst,mode,transparent)
	local srcr = tonumber(string.sub(src,1,2),16)
	local srcg = tonumber(string.sub(src,3,4),16)
	local srcb = tonumber(string.sub(src,5,6),16)
	local dstr = tonumber(string.sub(dst,1,2),16)
	local dstg = tonumber(string.sub(dst,3,4),16)
	local dstb = tonumber(string.sub(dst,5,6),16)
	local op = "normal"
	if type(mode) == "string" then op = string.lower(mode) end
	if op == "normal" then
		return src
	elseif op == "nop" then
		return dst
	elseif op == "overlay" then
		return (string.upper(src) == string.upper(transparent)) and dst or src
	elseif op == "add" then
		local r = math.min(255,srcr+dstr)
		local g = math.min(255,srcg+dstg)
		local b = math.min(255,srcb+dstb)
		return string.format("%02X%02X%02X",r,g,b)
	elseif op == "sub" then
		local r = math.max(0,dstr-srcr)
		local g = math.max(0,dstg-srcg)
		local b = math.max(0,dstb-srcb)
		return string.format("%02X%02X%02X",r,g,b)
	elseif op == "isub" then
		local r = math.max(0,srcr-dstr)
		local g = math.max(0,srcg-dstg)
		local b = math.max(0,srcb-dstb)
		return string.format("%02X%02X%02X",r,g,b)
	elseif op == "average" then
		local r = math.min(255,(srcr+dstr)/2)
		local g = math.min(255,(srcg+dstg)/2)
		local b = math.min(255,(srcb+dstb)/2)
		return string.format("%02X%02X%02X",r,g,b)
	elseif op == "and" or op == "or" or op == "xor" or op == "xnor" or op == "not" or op == "nand" or op == "nor" then
		return bitwiseblend(srcr,dstr,srcg,dstg,srcb,dstb,op)
	elseif op == "tohsv" or op == "rgbtohsv" then
		return string.format("%02X%02X%02X",rgbtohsv(srcr,srcg,srcb))
	elseif op == "torgb" or op == "hsvtorgb" then
		return string.format("%02X%02X%02X",hsvtorgb(srcr,srcg,srcb))
	else
		return src
	end
end

local function runcommand(pos,meta,command)
	if type(command) ~= "table" then return end
	if command.command == "createbuffer" then
		if type(command.buffer) ~= "number" or type(command.xsize) ~= "number" or type(command.ysize) ~= "number" then return end
		local bufnum = math.floor(command.buffer)
		if bufnum < 0 or bufnum > 7 then return end
		local xsize = math.min(64,math.floor(command.xsize))
		local ysize = math.min(64,math.floor(command.ysize))
		if xsize < 1 or ysize < 1 then return end
		local fillcolor = command.fill
		if type(fillcolor) ~= "string" or string.len(fillcolor) > 7 or string.len(fillcolor) < 6 then fillcolor = "000000" end
		if string.sub(fillcolor,1,1) == "#" then fillcolor = string.sub(fillcolor,2,7) end
		if not tonumber(fillcolor,16) then fillcolor = "000000" end
		local buffer = {}
		buffer.xsize = xsize
		buffer.ysize = ysize
		for y=1,ysize,1 do
			buffer[y] = {}
			for x=1,xsize,1 do
				buffer[y][x] = fillcolor
			end
		end
		meta:set_string("buffer"..bufnum,minetest.serialize(buffer))
	elseif command.command == "send" then
		if type(command.buffer) ~= "number" or type(command.channel) ~= "string" then return end
		local bufnum = math.floor(command.buffer)
		if bufnum < 0 or bufnum > 7 then return end
		local buffer = meta:get_string("buffer"..bufnum)
		if string.len(buffer) == 0 then return end
		buffer = minetest.deserialize(buffer)
		if type(buffer) == "table" then
			digiline:receptor_send(pos,digiline.rules.default,command.channel,buffer)
		end
	elseif command.command == "drawrect" then
		if type(command.buffer) ~= "number" or type(command.x1) ~= "number" or type(command.y1) ~= "number" or type(command.x2) ~= "number" or type(command.y2) ~= "number" then return end
		local bufnum = math.floor(command.buffer)
		if bufnum < 0 or bufnum > 7 then return end
		local x1 = math.min(64,math.floor(command.x1))
		local y1 = math.min(64,math.floor(command.y1))
		local x2 = math.min(64,math.floor(command.x2))
		local y2 = math.min(64,math.floor(command.y2))
		if x1 < 1 or y1 < 1 or x2 < 1 or y2 < 1 then return end
		local buffer = meta:get_string("buffer"..bufnum)
		if string.len(buffer) == 0 then return end
		buffer = minetest.deserialize(buffer)
		if type(buffer) ~= "table" then return end
		x2 = math.min(x2,buffer.xsize)
		y2 = math.min(y2,buffer.ysize)
		if x1 > x2 or y1 > y2 then return end
		local fillcolor = command.fill
		if type(fillcolor) ~= "string" or string.len(fillcolor) > 7 or string.len(fillcolor) < 6 then fillcolor = "000000" end
		if string.sub(fillcolor,1,1) == "#" then fillcolor = string.sub(fillcolor,2,7) end
		if not tonumber(fillcolor,16) then fillcolor = "000000" end
		local edgecolor = command.edge
		if type(edgecolor) ~= "string" or string.len(edgecolor) > 7 or string.len(edgecolor) < 6 then edgecolor = fillcolor end
		if string.sub(edgecolor,1,1) == "#" then edgecolor = string.sub(edgecolor,2,7) end
		if not tonumber(edgecolor,16) then edgecolor = fillcolor end
		for y=y1,y2,1 do
			for x=x1,x2,1 do
				buffer[y][x] = fillcolor
			end
		end
		if fillcolor ~= edgecolor then
			for x=x1,x2,1 do
				buffer[y1][x] = edgecolor
				buffer[y2][x] = edgecolor
			end
			for y=y1,y2,1 do
				buffer[y][x1] = edgecolor
				buffer[y][x2] = edgecolor
			end
		end
		meta:set_string("buffer"..bufnum,minetest.serialize(buffer))
	elseif command.command == "drawpoint" then
		if type(command.buffer) ~= "number" or type(command.x) ~= "number" or type(command.y) ~= "number" then return end
		local bufnum = math.floor(command.buffer)
		if bufnum < 0 or bufnum > 7 then return end
		local x = math.floor(command.x)
		local y = math.floor(command.y)
		if x < 1 or y < 1 then return end
		local buffer = meta:get_string("buffer"..bufnum)
		if string.len(buffer) == 0 then return end
		buffer = minetest.deserialize(buffer)
		if type(buffer) ~= "table" then return end
		if x > buffer.xsize or y > buffer.ysize then return end
		local color = command.color
		if type(color) ~= "string" or string.len(color) > 7 or string.len(color) < 6 then color = "000000" end
		if string.sub(color,1,1) == "#" then color = string.sub(color,2,7) end
		if not tonumber(color,16) then color = "000000" end
		buffer[y][x] = color
		meta:set_string("buffer"..bufnum,minetest.serialize(buffer))
	elseif command.command == "copy" then
		if type(command.src) ~= "number" or type(command.dst) ~= "number" or type(command.srcx) ~= "number" or type(command.srcy) ~= "number" or type(command.dstx) ~= "number" or type(command.dsty) ~= "number" or type(command.xsize) ~= "number" or type(command.ysize) ~= "number" then return end
		local src = math.floor(command.src)
		if src < 0 or src > 7 then return end
		local dst = math.floor(command.dst)
		if dst < 0 or dst > 7 then return end
		local srcx = math.floor(command.srcx)
		local srcy = math.floor(command.srcy)
		local dstx = math.floor(command.dstx)
		local dsty = math.floor(command.dsty)
		local xsize = math.floor(command.xsize)
		local ysize = math.floor(command.ysize)
		if srcx < 1 or srcy < 1 or dstx < 1 or dsty < 1 or xsize < 1 or ysize < 1 then return end
		local sourcebuffer = meta:get_string("buffer"..src)
		local destbuffer = meta:get_string("buffer"..dst)
		if string.len(sourcebuffer) == 0 then return end
		sourcebuffer = minetest.deserialize(sourcebuffer)
		if type(sourcebuffer) ~= "table" then return end
		if string.len(destbuffer) == 0 then return end
		destbuffer = minetest.deserialize(destbuffer)
		if type(destbuffer) ~= "table" then return end
		if srcx + xsize-1 > sourcebuffer.xsize or srcy + ysize-1 > sourcebuffer.ysize then return end
		if dstx + xsize-1 > destbuffer.xsize or dsty + ysize-1 > destbuffer.ysize then return end
		local transparent = command.transparent
		if type(transparent) ~= "string" or string.len(transparent) > 7 or string.len(transparent) < 6 then transparent = "000000" end
		if string.sub(transparent,1,1) == "#" then transparent = string.sub(transparent,2,7) end
		if not tonumber(transparent,16) then transparent = "000000" end
		for y=0,ysize-1,1 do
			for x=0,xsize-1,1 do
				local srcpx = sourcebuffer[srcy+y][srcx+x]
				local destpx = destbuffer[dsty+y][dstx+x]
				destbuffer[dsty+y][dstx+x] = blend(srcpx,destpx,command.mode,transparent)
			end
		end
		meta:set_string("buffer"..dst,minetest.serialize(destbuffer))
	elseif command.command == "load" then
		if type(command.buffer) ~= "number" or type(command.x) ~= "number" or type(command.y) ~= "number" or type(command.data) ~= "table" then return end
		local bufnum = math.floor(command.buffer)
		if bufnum < 0 or bufnum > 7 then return end
		local xstart = math.floor(command.x)
		local ystart = math.floor(command.y)
		if xstart < 1 or ystart < 1 then return end
		local buffer = meta:get_string("buffer"..bufnum)
		if string.len(buffer) == 0 then return end
		buffer = minetest.deserialize(buffer)
		if type(buffer) ~= "table" then return end
		if type(command.data[1]) ~= "table" then return end
		if #command.data[1] < 1 then return end
		local ysize = #command.data
		local xsize = #command.data[1]
		if xstart+xsize-1 > buffer.xsize or ystart+ysize-1 > buffer.ysize then return end
		for y=1,ysize,1 do
			if type(command.data[y]) == "table" then
				for x=1,xsize,1 do
					local color = command.data[y][x]
					if type(color) == "string" then
						if string.len(color) == 7 then color = string.sub(color,2,7) end
						if tonumber(color,16) then
							buffer[ystart+y-1][xstart+x-1] = color
						end
					end
				end
			end
		end
		meta:set_string("buffer"..bufnum,minetest.serialize(buffer))
	elseif command.command == "text" then
		if type(command.buffer) ~= "number" or type(command.x) ~= "number" or type(command.y) ~= "number" or type(command.text) ~= "string" or string.len(command.text) < 1 then return end
		command.text = string.sub(command.text,1,16)
		local bufnum = math.floor(command.buffer)
		if bufnum < 0 or bufnum > 7 then return end
		local x = math.floor(command.x)
		local y = math.floor(command.y)
		if x < 1 or y < 1 then return end
		local buffer = meta:get_string("buffer"..bufnum)
		if string.len(buffer) == 0 then return end
		buffer = minetest.deserialize(buffer)
		if type(buffer) ~= "table" then return end
		if x > buffer.xsize or y > buffer.ysize then return end
		local color = command.color
		if type(color) ~= "string" or string.len(color) > 7 or string.len(color) < 6 then color = "ff6600" end
		if string.sub(color,1,1) == "#" then color = string.sub(color,2,7) end
		if not tonumber(color,16) then color = "ff6600" end
		for i=1,string.len(command.text),1 do
			local char = font[string.byte(string.sub(command.text,i,i))]
			for chary=1,12,1 do
				for charx=1,5,1 do
					local startx = x + (i*6-6)
					if char[chary][charx] and y+chary-1 <= buffer.ysize and startx+charx-1 <= buffer.xsize then
						local dstpx = buffer[y+chary-1][startx+charx-1]
						buffer[y+chary-1][startx+charx-1] = blend(color,dstpx,command.mode,"")
					end
				end
			end
		end
		meta:set_string("buffer"..bufnum,minetest.serialize(buffer))
	end
end

minetest.register_node("digistuff:gpu", {
	description = "Digilines 2D Graphics Processor",
	groups = {cracky=3},
	on_construct = function(pos)
		local meta = minetest.get_meta(pos)
		meta:set_string("formspec","field[channel;Channel;${channel}")
	end,
	tiles = {
		"digistuff_gpu_top.png",
		"jeija_microcontroller_bottom.png",
		"jeija_microcontroller_sides.png",
		"jeija_microcontroller_sides.png",
		"jeija_microcontroller_sides.png",
		"jeija_microcontroller_sides.png"
	},
	inventory_image = "digistuff_gpu_top.png",
	drawtype = "nodebox",
	selection_box = {
		--From luacontroller
		type = "fixed",
		fixed = { -8/16, -8/16, -8/16, 8/16, -5/16, 8/16 },
	},
	_digistuff_channelcopier_fieldname = "channel",
	node_box = {
		--From Luacontroller
		type = "fixed",
		fixed = {
			{-8/16, -8/16, -8/16, 8/16, -7/16, 8/16}, -- Bottom slab
			{-5/16, -7/16, -5/16, 5/16, -6/16, 5/16}, -- Circuit board
			{-3/16, -6/16, -3/16, 3/16, -5/16, 3/16}, -- IC
		}
	},
	paramtype = "light",
	sunlight_propagates = true,
	on_receive_fields = function(pos, formname, fields, sender)
		local name = sender:get_player_name()
		if minetest.is_protected(pos,name) and not minetest.check_player_privs(name,{protection_bypass=true}) then
			minetest.record_protection_violation(pos,name)
			return
		end
		local meta = minetest.get_meta(pos)
		if fields.channel then meta:set_string("channel",fields.channel) end
	end,
	digiline = 
	{
		receptor = {},
		effector = {
			action = function(pos,node,channel,msg)
				local meta = minetest.get_meta(pos)
				if meta:get_string("channel") ~= channel or type(msg) ~= "table" then return end
					if type(msg[1]) == "table" then
						for i=1,32,1 do
							if type(msg[i]) == "table" then
								runcommand(pos,meta,msg[i])
							end
						end
					else
						runcommand(pos,meta,msg)
					end
			end
		},
	},
})

minetest.register_craft({
	output = "digistuff:gpu",
	recipe = {
		{"","default:steel_ingot",""},
		{"digilines:wire_std_00000000","mesecons_luacontroller:luacontroller0000","digilines:wire_std_00000000"},
		{"dye:red","dye:green","dye:blue"},
	}
})