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capitalex's Avatar capitalex 修订了这个 Gist 9 months ago. 转到此修订

1 file changed, 326 insertions

moving-stuff-kinda.lua(文件已创建)

@@ -0,0 +1,326 @@
1 + local pprint = require "pprint"
2 + love.graphics.setDefaultFilter("nearest", "nearest")
3 + local read, write = 1, 1
4 + local active_buffer, back_buffer, rule_book = {}, {}, {}
5 + local function parse(str)
6 + local symbols = {}
7 + for symbol in str:gmatch("%S+") do
8 + table.insert(symbols, symbol)
9 + end
10 + return symbols
11 + end
12 +
13 + local function queue_up(string)
14 + for _, symbol in ipairs(parse(string)) do
15 + table.insert(active_buffer, symbol)
16 + end
17 + end
18 + local function add_rule(wants)
19 + return function(gives)
20 + table.insert(rule_book, {parse(wants), type(gives) == "string" and parse(gives) or gives})
21 + end
22 + end
23 +
24 + local function match(wants)
25 + for i = 1, #wants do
26 + if wants[i] ~= active_buffer[i + read - 1] then return false end
27 + end
28 + return true
29 + end
30 +
31 + local function consume(n)
32 + read = read + n
33 + end
34 +
35 + local function peek(n)
36 + local symbols = {}
37 + for i = 0, n - 1 do
38 + table.insert(symbols, active_buffer[read + i])
39 + end
40 + return symbols
41 + end
42 +
43 + local function take_next(n)
44 + n = n or 1
45 + local symbol = active_buffer[read]
46 + read = read + 1
47 + return symbol
48 + end
49 +
50 +
51 + local function produce(gives)
52 + for _, symbol in ipairs(gives) do
53 + back_buffer[write] = symbol
54 + write = write + 1
55 + end
56 + end
57 +
58 + local function advance()
59 + back_buffer[write], active_buffer[read] = active_buffer[read], nil
60 + write, read = write + 1, read + 1
61 + end
62 +
63 + local function run_cycle()
64 + local rule_matched = false
65 + repeat
66 + local rule_fired = false
67 + for _, rule in ipairs(rule_book) do
68 + local wants, gives = rule[1], rule[2]
69 + if match(wants) then
70 + consume(#wants)
71 + if type(gives) == "function" then
72 + gives(active_buffer, read)
73 + else
74 + produce(gives)
75 + end
76 + rule_fired, rule_matched = true, true
77 + break
78 + end
79 + end
80 + if not rule_fired then advance() end
81 + until not active_buffer[read]
82 + return rule_matched
83 + end
84 +
85 +
86 + local function exchange_buffers()
87 + active_buffer, back_buffer = back_buffer, {}
88 + read, write = 1, 1
89 + end
90 +
91 + local cycles, MAX_CYCLES = 0, 10000
92 + local function run()
93 + while run_cycle() and cycles < MAX_CYCLES do
94 + print(table.concat(back_buffer, " "))
95 + exchange_buffers()
96 + cycles = cycles + 1
97 + end
98 + exchange_buffers()
99 + end
100 +
101 + local current_sprite
102 + local sprites, state = {}, {}
103 + local screen = love.graphics.newCanvas()
104 +
105 + add_rule "@ sprite [" (function()
106 + current_sprite = { data = {{}} }
107 + produce {"sprite>"}
108 + end)
109 +
110 + add_rule "sprite> name is" (function()
111 + current_sprite.name = take_next()
112 + produce { "sprite>" }
113 + end)
114 +
115 + add_rule "sprite> symbol is" (function()
116 + current_sprite.symbol = take_next()
117 + produce { "sprite>" }
118 + end)
119 +
120 +
121 + add_rule "sprite> ;" (function()
122 + table.insert(current_sprite.data, {})
123 + produce { "sprite>" }
124 + end)
125 +
126 + add_rule "sprite> ]" (function()
127 + -- find longest row in data
128 + local longest_row = -1
129 + for _, row in ipairs(current_sprite.data) do
130 + if #row > longest_row then longest_row = #row end
131 + end
132 +
133 + -- pad out other rows
134 + for _, row in ipairs(current_sprite.data) do
135 + while #row < longest_row do
136 + table.insert(row, ".")
137 + end
138 + end
139 +
140 + -- construct a canvas for our sprite
141 + local sprite = love.graphics.newCanvas(longest_row, #current_sprite.data)
142 + love.graphics.setCanvas(sprite)
143 + local x, y = 0, 0
144 + for _, row in ipairs(current_sprite.data) do
145 + for _, data in ipairs(row) do
146 + if data == "#" then
147 + love.graphics.points(x + 0.5, y + 0.5)
148 + end
149 + x = x + 1
150 + end
151 + x, y = 0, y + 1
152 + end
153 + love.graphics.setCanvas()
154 + sprites[current_sprite.symbol] = sprite
155 + produce {"@"}
156 + end)
157 +
158 + add_rule "sprite>" (function()
159 + table.insert(current_sprite.data[#current_sprite.data], take_next())
160 + produce { "sprite>" }
161 + end)
162 +
163 + add_rule "@ draw sprite [" (function()
164 + local symbol = take_next()
165 + consume(2)
166 + local x = tonumber(take_next())
167 + consume(1)
168 + local y = tonumber(take_next())
169 + consume(1)
170 + love.graphics.setCanvas(screen)
171 + love.graphics.draw(sprites[symbol], x * 16, y * 16)
172 + love.graphics.setCanvas()
173 + produce {"@"}
174 + end)
175 +
176 + add_rule "@ clear screen" (function()
177 + love.graphics.setCanvas(screen)
178 + love.graphics.clear()
179 + love.graphics.setCanvas()
180 + produce {"@"}
181 + end)
182 +
183 + -- @ set <field> to <value>
184 + add_rule "@ set" (function ()
185 + -- <field>
186 + local field = {}
187 + local symbol = take_next()
188 + print(symbol)
189 + while symbol ~= "to" do
190 + table.insert(field, symbol)
191 + symbol = take_next()
192 + end
193 + pprint(symbol)
194 + -- <value>
195 + local value = take_next()
196 + -- try casting value to a number
197 + if value:sub(1,1) == "#" then
198 + local numerical_part = tonumber(value:sub(2))
199 + value = numerical_part or value
200 + end
201 + print()
202 + state[table.concat(field, " ")] = value
203 + produce {"@"}
204 + end)
205 +
206 +
207 +
208 + queue_up [[
209 + @ sprite [
210 + symbol is p
211 + . . . . . # # # # # . . . . . . ;
212 + . . . . . . . . . . . . . . . . ;
213 + . . . . . # # # # # . . . . . . ;
214 + . . # # # # # # . # # . . . . . ;
215 + . . . . # # # # . # # # # # . . ;
216 + . . . . . # # # # # # # # # . . ;
217 + . . . . . . # # # # . . . . . . ;
218 + . . . . . # # # # # # . . . . . ;
219 + . . . . # . # # # # . # . . . . ;
220 + . . . . # . # # # # . # . . . . ;
221 + . . . . # . # # # # . # . . . . ;
222 + . . . . . . # . . # . . . . . . ;
223 + . . . . . . # . . # . . . . . . ;
224 + . . . . . . # . . # . . . . . . ;
225 + . . . . . . # . . # . . . . . . ;
226 + . . . . . . # . . # . . . . . . ]
227 +
228 + sprite [
229 + symbol is w
230 + . . # # # # # # # # # # # # . . ;
231 + . # . # . # . # . # . # . # # . ;
232 + # . # . # . # . # . # . # . # # ;
233 + # # . # . # . # . # . # . # . # ;
234 + # . # . # . # . # . # . # . # # ;
235 + # # . # . # . # . # . # . # . # ;
236 + # . # . # . # . # . # . # . # # ;
237 + # # . # . # . # . # . # . # . # ;
238 + # . # . # . # . # . # . # . # # ;
239 + # # . # . # . # . # . # . # . # ;
240 + # . # . # . # . # . # . # . # # ;
241 + # # . # . # . # . # . # . # . # ;
242 + # . # . # . # . # . # . # . # # ;
243 + # # . # . # . # . # . # . # . # ;
244 + . # # . # . # . # . # . # . # . ;
245 + . . # # # # # # # # # # # # . . ]
246 +
247 + set player x to #5
248 + set player y to #4
249 + ]]
250 +
251 + local function draw_map()
252 + queue_up [[
253 + draw sprite [ w at x 5 y 5 ]
254 +
255 + draw sprite [ w at x 4 y 6 ]
256 + draw sprite [ w at x 5 y 6 ]
257 + draw sprite [ w at x 6 y 6 ]
258 +
259 + draw sprite [ w at x 3 y 7 ]
260 + draw sprite [ w at x 4 y 7 ]
261 + draw sprite [ w at x 5 y 7 ]
262 + draw sprite [ w at x 6 y 7 ]
263 + draw sprite [ w at x 7 y 7 ]
264 +
265 + draw sprite [ w at x 2 y 8 ]
266 + draw sprite [ w at x 3 y 8 ]
267 + draw sprite [ w at x 4 y 8 ]
268 + draw sprite [ w at x 5 y 8 ]
269 + draw sprite [ w at x 6 y 8 ]
270 + draw sprite [ w at x 7 y 8 ]
271 + draw sprite [ w at x 8 y 8 ]
272 +
273 + draw sprite [ w at x 1 y 9 ]
274 + draw sprite [ w at x 2 y 9 ]
275 + draw sprite [ w at x 3 y 9 ]
276 + draw sprite [ w at x 4 y 9 ]
277 + draw sprite [ w at x 5 y 9 ]
278 + draw sprite [ w at x 6 y 9 ]
279 + draw sprite [ w at x 7 y 9 ]
280 + draw sprite [ w at x 8 y 9 ]
281 + draw sprite [ w at x 9 y 9 ]
282 +
283 + draw sprite [ w at x 0 y 10 ]
284 + draw sprite [ w at x 1 y 10 ]
285 + draw sprite [ w at x 2 y 10 ]
286 + draw sprite [ w at x 3 y 10 ]
287 + draw sprite [ w at x 4 y 10 ]
288 + draw sprite [ w at x 5 y 10 ]
289 + draw sprite [ w at x 6 y 10 ]
290 + draw sprite [ w at x 7 y 10 ]
291 + draw sprite [ w at x 8 y 10 ]
292 + draw sprite [ w at x 9 y 10 ]
293 + draw sprite [ w at x 10 y 10 ]
294 + ]]
295 +
296 + end
297 + run()
298 + local function draw_player()
299 + local draw_command = ("draw sprite [ p at x %d y %d ]"):format(state["player x"], state["player y"])
300 + queue_up(draw_command)
301 + end
302 +
303 + function love.draw()
304 + queue_up "clear screen"
305 + draw_player()
306 + pprint(active_buffer)
307 + run()
308 + love.graphics.draw(screen, 0, 0, 0, 4, 4)
309 + love.graphics.print(tostring(love.timer.getFPS()), 10, 10)
310 + end
311 +
312 + function love.keypressed(_, scancode)
313 + local move_x_command = "set player x to #%d"
314 + local move_y_command = "set player y to #%d"
315 + if scancode == "w" then
316 + queue_up(move_y_command:format(state["player y"] - 1))
317 + elseif scancode == "s" then
318 + queue_up(move_y_command:format(state["player y"] + 1))
319 + end
320 + if scancode == "a" then
321 + queue_up(move_x_command:format(state["player x"] - 1))
322 + elseif scancode == "d" then
323 + queue_up(move_x_command:format(state["player x"] + 1))
324 + end
325 + end
326 +

capitalex's Avatar capitalex 修订了这个 Gist 9 months ago. 转到此修订

1 file changed, 267 insertions

pixels.lua(文件已创建)

@@ -0,0 +1,267 @@
1 + local pprint = require "pprint"
2 + love.graphics.setDefaultFilter("nearest", "nearest")
3 + local read, write = 1, 1
4 + local active_buffer, back_buffer, rule_book = {}, {}, {}
5 + local function parse(str)
6 + local symbols = {}
7 + for symbol in str:gmatch("%S+") do
8 + table.insert(symbols, symbol)
9 + end
10 + return symbols
11 + end
12 +
13 + local function queue_up(string)
14 + for _, symbol in ipairs(parse(string)) do
15 + table.insert(active_buffer, symbol)
16 + end
17 + end
18 + local function add_rule(wants)
19 + return function(gives)
20 + table.insert(rule_book, {parse(wants), type(gives) == "string" and parse(gives) or gives})
21 + end
22 + end
23 +
24 + local function match(wants)
25 + for i = 1, #wants do
26 + if wants[i] ~= active_buffer[i + read - 1] then return false end
27 + end
28 + return true
29 + end
30 +
31 + local function consume(n)
32 + read = read + n
33 + end
34 +
35 + local function peek(n)
36 + local symbols = {}
37 + for i = 0, n - 1 do
38 + table.insert(symbols, active_buffer[read + i])
39 + end
40 + return symbols
41 + end
42 +
43 + local function take_next(n)
44 + n = n or 1
45 + local symbol = active_buffer[read]
46 + read = read + 1
47 + return symbol
48 + end
49 +
50 +
51 + local function produce(gives)
52 + for _, symbol in ipairs(gives) do
53 + back_buffer[write] = symbol
54 + write = write + 1
55 + end
56 + end
57 +
58 + local function advance()
59 + back_buffer[write], active_buffer[read] = active_buffer[read], nil
60 + write, read = write + 1, read + 1
61 + end
62 +
63 + local function run_cycle()
64 + local rule_matched = false
65 + repeat
66 + local rule_fired = false
67 + for _, rule in ipairs(rule_book) do
68 + local wants, gives = rule[1], rule[2]
69 + if match(wants) then
70 + consume(#wants)
71 + if type(gives) == "function" then
72 + gives(active_buffer, read)
73 + else
74 + produce(gives)
75 + end
76 + rule_fired, rule_matched = true, true
77 + break
78 + end
79 + end
80 + if not rule_fired then advance() end
81 + until not active_buffer[read]
82 + return rule_matched
83 + end
84 +
85 +
86 + local function exchange_buffers()
87 + active_buffer, back_buffer = back_buffer, {}
88 + read, write = 1, 1
89 + end
90 +
91 + local cycles, MAX_CYCLES = 0, 10000
92 + local function run()
93 + while run_cycle() and cycles < MAX_CYCLES do
94 + print(table.concat(back_buffer, " "))
95 + exchange_buffers()
96 + cycles = cycles + 1
97 + end
98 + end
99 +
100 + local current_sprite
101 + local sprites = {}
102 + local screen = love.graphics.newCanvas()
103 +
104 + add_rule "@ sprite [" (function()
105 + current_sprite = { data = {{}} }
106 + produce {"sprite>"}
107 + end)
108 +
109 + add_rule "sprite> name is" (function()
110 + current_sprite.name = take_next()
111 + produce { "sprite>" }
112 + end)
113 +
114 + add_rule "sprite> symbol is" (function()
115 + current_sprite.symbol = take_next()
116 + produce { "sprite>" }
117 + end)
118 +
119 +
120 + add_rule "sprite> ;" (function()
121 + table.insert(current_sprite.data, {})
122 + produce { "sprite>" }
123 + end)
124 +
125 + add_rule "sprite> ]" (function()
126 + -- find longest row in data
127 + local longest_row = -1
128 + for _, row in ipairs(current_sprite.data) do
129 + if #row > longest_row then longest_row = #row end
130 + end
131 +
132 + -- pad out other rows
133 + for _, row in ipairs(current_sprite.data) do
134 + while #row < longest_row do
135 + table.insert(row, ".")
136 + end
137 + end
138 +
139 + -- construct a canvas for our sprite
140 + print(#current_sprite.data)
141 + local sprite = love.graphics.newCanvas(longest_row, #current_sprite.data)
142 + love.graphics.setCanvas(sprite)
143 + local x, y = 0, 0
144 + for _, row in ipairs(current_sprite.data) do
145 + for _, data in ipairs(row) do
146 + if data == "#" then
147 + love.graphics.points(x + 0.5, y + 0.5)
148 + end
149 + x = x + 1
150 + end
151 + x, y = 0, y + 1
152 + end
153 + love.graphics.setCanvas()
154 + sprites[current_sprite.symbol] = sprite
155 + produce {"@"}
156 + end)
157 +
158 + add_rule "sprite>" (function()
159 + table.insert(current_sprite.data[#current_sprite.data], take_next())
160 + produce { "sprite>" }
161 + end)
162 +
163 + add_rule "@ draw sprite [" (function()
164 + local symbol = take_next()
165 + consume(2)
166 + local x = tonumber(take_next())
167 + consume(1)
168 + local y = tonumber(take_next())
169 + consume(1)
170 + love.graphics.setCanvas(screen)
171 + love.graphics.draw(sprites[symbol], x * 16, y * 16)
172 + love.graphics.setCanvas()
173 + produce {"@"}
174 + end)
175 +
176 +
177 +
178 + queue_up [[
179 + @ sprite [
180 + symbol is p
181 + . . . . . # # # # # . . . . . . ;
182 + . . . . . . . . . . . . . . . . ;
183 + . . . . . # # # # # . . . . . . ;
184 + . . # # # # # # . # # . . . . . ;
185 + . . . . # # # # . # # # # # . . ;
186 + . . . . . # # # # # # # # # . . ;
187 + . . . . . . # # # # . . . . . . ;
188 + . . . . . # # # # # # . . . . . ;
189 + . . . . # . # # # # . # . . . . ;
190 + . . . . # . # # # # . # . . . . ;
191 + . . . . # . # # # # . # . . . . ;
192 + . . . . . . # . . # . . . . . . ;
193 + . . . . . . # . . # . . . . . . ;
194 + . . . . . . # . . # . . . . . . ;
195 + . . . . . . # . . # . . . . . . ;
196 + . . . . . . # . . # . . . . . . ]
197 +
198 + sprite [
199 + symbol is w
200 + . . # # # # # # # # # # # # . . ;
201 + . # . # . # . # . # . # . # # . ;
202 + # . # . # . # . # . # . # . # # ;
203 + # # . # . # . # . # . # . # . # ;
204 + # . # . # . # . # . # . # . # # ;
205 + # # . # . # . # . # . # . # . # ;
206 + # . # . # . # . # . # . # . # # ;
207 + # # . # . # . # . # . # . # . # ;
208 + # . # . # . # . # . # . # . # # ;
209 + # # . # . # . # . # . # . # . # ;
210 + # . # . # . # . # . # . # . # # ;
211 + # # . # . # . # . # . # . # . # ;
212 + # . # . # . # . # . # . # . # # ;
213 + # # . # . # . # . # . # . # . # ;
214 + . # # . # . # . # . # . # . # . ;
215 + . . # # # # # # # # # # # # . . ]
216 +
217 + draw sprite [ p at x 5 y 4 ]
218 +
219 + draw sprite [ w at x 5 y 5 ]
220 +
221 + draw sprite [ w at x 4 y 6 ]
222 + draw sprite [ w at x 5 y 6 ]
223 + draw sprite [ w at x 6 y 6 ]
224 +
225 + draw sprite [ w at x 3 y 7 ]
226 + draw sprite [ w at x 4 y 7 ]
227 + draw sprite [ w at x 5 y 7 ]
228 + draw sprite [ w at x 6 y 7 ]
229 + draw sprite [ w at x 7 y 7 ]
230 +
231 + draw sprite [ w at x 2 y 8 ]
232 + draw sprite [ w at x 3 y 8 ]
233 + draw sprite [ w at x 4 y 8 ]
234 + draw sprite [ w at x 5 y 8 ]
235 + draw sprite [ w at x 6 y 8 ]
236 + draw sprite [ w at x 7 y 8 ]
237 + draw sprite [ w at x 8 y 8 ]
238 +
239 + draw sprite [ w at x 1 y 9 ]
240 + draw sprite [ w at x 2 y 9 ]
241 + draw sprite [ w at x 3 y 9 ]
242 + draw sprite [ w at x 4 y 9 ]
243 + draw sprite [ w at x 5 y 9 ]
244 + draw sprite [ w at x 6 y 9 ]
245 + draw sprite [ w at x 7 y 9 ]
246 + draw sprite [ w at x 8 y 9 ]
247 + draw sprite [ w at x 9 y 9 ]
248 +
249 + draw sprite [ w at x 0 y 10 ]
250 + draw sprite [ w at x 1 y 10 ]
251 + draw sprite [ w at x 2 y 10 ]
252 + draw sprite [ w at x 3 y 10 ]
253 + draw sprite [ w at x 4 y 10 ]
254 + draw sprite [ w at x 5 y 10 ]
255 + draw sprite [ w at x 6 y 10 ]
256 + draw sprite [ w at x 7 y 10 ]
257 + draw sprite [ w at x 8 y 10 ]
258 + draw sprite [ w at x 9 y 10 ]
259 + draw sprite [ w at x 10 y 10 ]
260 + ]]
261 +
262 + run()
263 +
264 + function love.draw()
265 +
266 + love.graphics.draw(screen, 0, 0, 0, 4, 4)
267 + end

capitalex's Avatar capitalex 修订了这个 Gist 9 months ago. 转到此修订

1 file changed, 94 insertions

string-rewriter.lua(文件已创建)

@@ -0,0 +1,94 @@
1 + local read, write = 1, 1
2 + local active_buffer, back_buffer, rule_book = {}, {}, {}
3 + local function parse(str)
4 + local symbols = {}
5 + for symbol in str:gmatch("%S+") do
6 + table.insert(symbols, symbol)
7 + end
8 + return symbols
9 + end
10 +
11 + local function queue_up(string)
12 + for _, symbol in ipairs(parse(string)) do
13 + table.insert(active_buffer, symbol)
14 + end
15 + end
16 + local function add_rule(wants)
17 + return function(gives)
18 + table.insert(rule_book, {parse(wants), parse(gives)})
19 + end
20 + end
21 +
22 + local function match(wants)
23 + for i = 1, #wants do
24 + if wants[i] ~= active_buffer[i + read - 1] then return false end
25 + end
26 + return true
27 + end
28 +
29 + local function consume(n)
30 + read = read + n
31 + end
32 +
33 + local function produce(gives)
34 + for _, symbol in ipairs(gives) do
35 + back_buffer[write] = symbol
36 + write = write + 1
37 + end
38 + end
39 +
40 + local function advance()
41 + back_buffer[write], active_buffer[read] = active_buffer[read], nil
42 + write, read = write + 1, read + 1
43 + end
44 +
45 + local function run_cycle()
46 + local rule_matched = false
47 + repeat
48 + local rule_fired = false
49 + for _, rule in ipairs(rule_book) do
50 + local wants, gives = rule[1], rule[2]
51 + if match(wants) then
52 + consume(#wants)
53 + produce(gives)
54 + rule_fired, rule_matched = true, true
55 + break
56 + end
57 + end
58 + if not rule_fired then advance() end
59 + until not active_buffer[read]
60 + return rule_matched
61 + end
62 +
63 +
64 + local function exchange_buffers()
65 + active_buffer, back_buffer = back_buffer, {}
66 + read, write = 1, 1
67 + end
68 +
69 + local cycles, MAX_CYCLES = 0, 10000
70 + local function run()
71 + while run_cycle() and cycles < MAX_CYCLES do
72 + print(table.concat(back_buffer, " "))
73 + exchange_buffers()
74 + cycles = cycles + 1
75 + end
76 + end
77 +
78 + add_rule "D D" "M"
79 + add_rule "C C C C C" "D"
80 + add_rule "L L" "C"
81 + add_rule "X X X X X" "L"
82 + add_rule "V V" "X"
83 + add_rule "I I I I I" "V"
84 +
85 + add_rule "I I I I" "I V"
86 + add_rule "V I V" "I X"
87 + add_rule "X X X X" "X L"
88 + add_rule "L X L" "X C"
89 + add_rule "C C C C" "C D"
90 + add_rule "D C D" "C M"
91 +
92 + queue_up(("I"):rep(1950, " "))
93 +
94 + run()
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