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[hexbog.git] / main.coffee
1 #   HexBog, a word game
2 #   Copyright (C) 2012 Jason Woofenden
3
4 #   This program is free software: you can redistribute it and/or modify
5 #   it under the terms of the GNU Affero General Public License as published by
6 #   the Free Software Foundation, either version 3 of the License, or
7 #   (at your option) any later version.
8
9 #   This program is distributed in the hope that it will be useful,
10 #   but WITHOUT ANY WARRANTY; without even the implied warranty of
11 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 #   GNU Affero General Public License for more details.
13
14 #   You should have received a copy of the GNU Affero General Public License
15 #   along with this program.  If not, see <http://www.gnu.org/licenses/>.
16
17 ##############################################
18 ##############    settings    ################
19 ##############################################
20
21 tile_radius = 26
22 tile_width = tile_radius * 2
23
24 fade_ms = 400
25 slide_ms = 2000
26
27 board_col_heights = [5, 6, 7, 8, 7, 6, 5]
28
29
30 ##############################################################
31 ##############    fix javascript some more    ################
32 ##############################################################
33
34 # so annoying that setTimeout has its arguments in the wrong order
35 timeout = (ms, callback) ->
36         setTimeout callback, ms
37
38 # warning: it's shalow (sub-elements are not cloned)
39 Array::clone = ->
40         return this.slice(0)
41
42 Array::sum = ->
43         ret = 0
44         ret += i for i in this
45         return ret
46
47 # ascending. All values must be Numbers
48 Array::num_sort = -> return this.sort((a, b) -> return a - b)
49
50 Array::last = ->
51         return this[this.length - 1]
52
53
54 ##############################################################
55 ##############    cookies (auto-save game)    ################
56 ##############################################################
57
58 set_cookie = (name, value, days) ->
59         date = new Date()
60         date.setTime date.getTime()+(days*24*60*60*1000)
61         cookie = "#{name}=#{value}; expires=#{date.toGMTString()}; path=/"
62         document.cookie = cookie
63 window.sc = set_cookie
64
65 get_cookie = (name) ->
66         key = name + '='
67         for c in document.cookie.split /; */
68                 if c.indexOf key is 0
69                         return c.substr key.length
70         return null
71
72 delete_cookie = (name) ->
73         set_cookie name, '', -1
74 window.dc = delete_cookie
75
76
77 board_cols = board_col_heights.length
78 board_tiles = board_col_heights.sum()
79 board_col_top_px = []
80 score = 0
81 board = new Array(board_tiles) # letters ("Qu" or single letter)
82 board_neighbors = [] # array of tile numbers "next to" this one
83 tile_top_px = [] # array of pixel coordinates for top of column
84 board_left_px = [] # array of pixel coordinates for left of column
85 board_aboves = [] # array of tile numbers above, starting from top
86 board_below = [] # tile number of next tile below or false
87
88 selected = []
89
90 letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
91 letter_distribution = [
92         14355 # a
93          3968 # b
94          6325 # c
95          7045 # d
96         20258 # e
97          2739 # f
98          5047 # g
99          4372 # h
100         13053 # i
101           516 # j
102          2600 # k
103          9631 # l
104          5115 # m
105         10082 # n
106         11142 # o
107          5292 # p
108           287 # qu
109         12341 # r
110         16571 # s
111         10215 # t
112          6131 # u
113          1728 # v
114          2184 # w
115           619 # x
116          3512 # y
117           831 # z
118
119 ]
120
121 letter_distribution_total = 175973 # letter_distribution.sum()
122
123
124 new_letter_queue = []
125 new_letter = ->
126         if new_letter_queue.length
127                 l = new_letter_queue.shift()
128                 if l is 'Q'
129                         return 'Qu'
130                 else
131                         return l
132         r = Math.floor Math.random() * (letter_distribution_total + 1)
133         for i in [0..25]
134                 r -= letter_distribution[i]
135                 if r <= 0
136                         if letters[i] is 'Q'
137                                 return 'Qu'
138                         return letters[i]
139         return 'Z' # just in case
140
141
142
143 # in memory it's layed out like this:
144 # a c f j m
145 # b d g k n
146 #   e h l
147 #     i
148 # for display, columns are slid vertically like so:
149 #       f
150 #     c   j
151 #   a   g   m
152 #     d   k
153 #   b   h   n
154 #     e   l
155 #       i
156 #
157 # work out which grid spaces are connected
158 init_board_layout = () ->
159         col_offset = 0
160         middle_col = (board_cols - 1) / 2
161
162         # how many tiles before the current tile?
163         for col_num in [0 .. board_cols - 1]
164                 if col_num < middle_col
165                         fw_other = 1
166                 else
167                         fw_other = -1
168
169                 if col_num > middle_col
170                         bw_other = 1
171                 else
172                         bw_other = -1
173
174                 is_first_col = col_num is 0
175                 is_last_col = col_num is board_cols - 1
176
177                 neighbors = []
178                 push = (offset) ->
179                         neighbors.push col_offset + offset
180
181                 col_top_px = Math.abs col_num - middle_col
182                 col_top_px *= tile_radius
183                 board_col_top_px.push col_top_px
184
185                 above = []
186                 for i in [0 .. board_col_heights[col_num] - 1]
187                         is_top_tile = i is 0
188                         is_bottom_tile = i is board_col_heights[col_num] - 1
189
190                         # link tile number to pixel "top" and "left" of containing column
191                         tile_top_px.push col_top_px + i * tile_width
192                         board_left_px.push col_num * tile_width
193
194                         # aboves (array of tile numbers above, starting from top)
195                         board_aboves.push above.clone()
196                         above.push i + col_offset
197
198                         # below (SINGLE tile number of tile below or false)
199                         if is_bottom_tile
200                                 board_below.push false
201                         else
202                                 board_below.push col_offset + i + 1
203
204                         # neighbors (array of tile numbers "next to" this one)
205                         neighbors = []
206                         unless is_top_tile # upward link
207                                 push i - 1
208                         unless is_bottom_tile # downward links
209                                 push i + 1
210                         unless is_first_col # leftward links
211                                 unless is_bottom_tile and bw_other is -1
212                                         push i - board_col_heights[col_num - 1]
213                                 unless is_top_tile and bw_other is -1
214                                         push i - board_col_heights[col_num - 1] + bw_other
215                         unless is_last_col # rightward links
216                                 unless is_bottom_tile and fw_other is -1
217                                         push i + board_col_heights[col_num]
218                                 unless is_top_tile and fw_other is -1
219                                         push i + board_col_heights[col_num] + fw_other
220
221                         board_neighbors.push neighbors.clone()
222
223                 col_offset += board_col_heights[col_num]
224
225
226 init_board = ->
227         encoded = window.location.hash
228         if encoded? and encoded.charAt 0 is '#'
229                 encoded = encoded.substr 1
230         unless encoded? and encoded.length > board_tiles
231                 encoded = get_cookie 'hexbog'
232         if encoded? and encoded.length > board_tiles
233                 new_letter_queue = (encoded.substr 0, board_tiles).split ''
234                 score = parseInt(encoded.substr(board_tiles), 10)
235
236         # work out which grid spaces are connected
237         # (neighbors, above, down)
238         init_board_layout()
239
240 $selection_display = null # initialized by init_html_board
241 $score_display = null # initialized by init_html_board
242 $definition_body = null # initialized by init_html_board
243 update_selection_display = ->
244         word = selected_word()
245         $selection_display.html word
246
247         # color the selected tiles according to whether they're a word or not
248         if word.length
249                 classes = ['selected_word', 'selected']
250                 if is_word word
251                         c = 0
252                 else
253                         c = 1
254                 for num in selected
255                         html_tiles[num].addClass classes[c]
256                         html_tiles[num].removeClass classes[1 - c]
257
258 # unselects the last tile of the selecetion
259 unselect_tile = ->
260         _unselect_tile()
261         update_selection_display()
262
263 _unselect_tile = ->
264         num = selected.pop()
265         html_tile = html_tiles[num]
266         html_tile.removeClass 'selected_word'
267         html_tile.removeClass 'selected'
268
269 unselect_all = ->
270         while selected.length
271                 _unselect_tile()
272         update_selection_display()
273
274 shrink_selection = (leave_count) ->
275         while selected.length > leave_count
276                 _unselect_tile()
277         update_selection_display()
278
279 selected_word = ->
280         word = ''
281         word += board[i] for i in selected
282         return word.toLowerCase()
283
284 save_game = ->
285         encoded = ''
286         for t in board
287                 encoded += t.substr 0, 1
288         encoded += score
289         set_cookie 'hexbog', encoded, 365
290         window.location.hash = encoded
291
292 # remove the selected tiles from the board, create new tiles, and slide everything into place
293 blip_selection = ->
294         faders = selected.num_sort()
295         selected = []
296         update_selection_display()
297         for i in faders
298                 html_tiles[i].unbind('click').fadeOut fade_ms
299         timeout fade_ms + 1, ->
300                 # which tiles need to be slid down
301                 sliders = (false for i in board)
302
303                 prev_col_top = null
304                 next_new_y = null
305                 for deleted in faders
306                         # find the tile number of the top tile in this column
307                         if board_aboves[deleted].length is 0
308                                 col_top = deleted
309                         else
310                                 col_top = board_aboves[deleted][0]
311
312                         # reset location where new tiles appear when we change columns
313                         if prev_col_top isnt col_top
314                                 next_new_y = -10 - tile_width
315                                 prev_col_top = col_top
316
317                         html_tiles[deleted].remove()
318
319                         # For each each tile above the one we've deleted:
320                         # 1. move it down one slot in the data scructures
321                         # 2. mark it as needing to slide
322                         dest = deleted
323                         aboves = board_aboves[deleted].clone().reverse()
324                         for above in aboves
325                                 html_tiles[dest] = html_tiles[above]
326                                 html_tiles[dest].data 'tile_number', dest
327                                 board[dest] = board[above]
328                                 sliders[dest] = true
329                                 --dest
330                         sliders[col_top] = true # the new tile needs to be slid down too
331
332                         new_tile col_top, board_left_px[col_top], next_new_y
333                         next_new_y -= tile_width + 50
334
335                 for slide, i in sliders
336                         if slide
337                                 html_tiles[i].animate {top: "#{tile_top_px[i]}px"}, slide_ms
338                                 sliders[i] = false
339                 save_game()
340
341 activate_selection = ->
342         word = selected_word()
343         if word.length < 3
344                 # FIXME make this a hint
345                 log "Too short: \"#{word}\""
346                 return
347         unless is_word word
348                 # FIXME make this automatically part of the selection display
349                 log "Not on word list: \"#{word}\""
350                 return
351         word_score = Math.round(Math.pow(1.7, word.length))
352         score += word_score
353         $score_display.html score
354         # FIXME make some kind of animation showing score gain
355         log "blipped \"#{word}\" for #{word_score} points"
356         blip_selection()
357         look_up_definition word
358         $('#definition').click()
359
360
361 show_definition = (word, type, definition, language) ->
362         html = "<a href=\"http://en.wiktionary.org/wiki/#{word}\" target=\"_blank\">"
363         html += "#{word.substr(0, 1).toUpperCase() + word.substr(1)}</a>, #{type}"
364         if language isnt 'English'
365                 html += " (#{language})"
366         html += ': '
367         html += definition
368         html += '<div id="definition_credit">Definition &copy;<a href="http://en.wiktionary.org/" target="_blank">wiktionary.org</a> CC-BY-SA</div>'
369         $definition_body.html html
370
371
372 select_tile = (num) ->
373         html_tile = html_tiles[num]
374         # html_tile.css backgroundColor: tile_selected_color
375         selected.push num
376         update_selection_display()
377         return
378
379 new_tile = (num, x, y) ->
380         letter = new_letter()
381
382         html_tile = $("<div class=\"tile\" style=\"left: #{x}px; top: #{y}px\" unselectable=\"on\">#{letter}</div>")
383         $board.append(html_tile)
384
385         html_tile.data 'tile_number', num
386         board[num] = letter
387         html_tiles[num] = html_tile
388
389         html_tile.click ->
390                 me = $(this)
391                 num = me.data 'tile_number'
392                 if num in selected
393                         nth_of_word = selected.indexOf(num)
394                         first = nth_of_word is 0
395                         last = nth_of_word is selected.length - 1
396
397                         if first and last
398                                 unselect_all() # Clicking only selected letter unselects it
399                         else if first and !last
400                                 shrink_selection 1 # Clicking start of word goes back to just that letter
401                                 # should this unselect all?
402                         else if last
403                                 activate_selection()
404                         else
405                                 shrink_selection nth_of_word + 1
406                 else # (not clicking on selected tile)
407                         if selected.length is 0
408                                 select_tile num
409                         else
410                                 unless num in board_neighbors[selected.last()]
411                                         unselect_all()
412                                 select_tile num
413
414
415 $board = null
416 html_tiles = []
417 init_html_board = ->
418         $('#loading').remove()
419         $selection_display = $('#selection')
420         $score_display = $('#score')
421         $score_display.html score
422         $definition_body = $('#definition_body')
423         $board = $('#board')
424         # make html for board
425         tile_number = 0
426         for col_num in [0 .. board_cols - 1]
427                 for num in [0 .. board_col_heights[col_num] - 1]
428                         x = col_num * tile_width
429                         y = board_col_top_px[col_num] + num * tile_width
430                         new_tile tile_number, x, y
431                         tile_number++
432
433 word_bins = []; word_bins.push(',') for [0...997]
434 hash_word = (word) ->
435         h = 0
436         for i in [0...word.length]
437                 h ^= word.charCodeAt(i) << ((i*3) % 21)
438         return h % 997
439 is_word = (str) ->
440         word_bins[hash_word str].indexOf(",#{str},") > -1
441
442 # this is called automatically by the compressed wordlist
443 parse_word_list = (compressed) ->
444         prefix = ''
445         cap_a = "A".charCodeAt 0
446         i = 0
447         next_chunk = ->
448                 chunk = compressed[i]
449                 for word in chunk.match(/[a-z]*[A-Z]/g)
450                         # the capital letter (at the end of the match) says how many characters
451                         # from the end of the previous word should be removed to create the prefix
452                         # for the next word. "A" for 0, "B" for 1, "C" for 2, etc
453                         bs = word[word.length - 1].charCodeAt(0) - cap_a
454                         word = prefix + word[0 ... word.length - 1]
455                         word_bins[hash_word word] += word + ','
456                         prefix = word[0 ... word.length - bs]
457                 if ++i is compressed.length
458                         return
459                 else
460                         timeout 1, next_chunk
461         timeout 1, next_chunk
462
463 extract_wiktionary_definiton = (html) ->
464         found = false
465         finds = {}
466         language = false
467         part = false
468
469         # clean HTML
470         ##################
471         # when we instantiate the html so we can use dom traversal, the browser
472         # will start loading images and such. This section attempts to mangle the
473         # html so no resources are loaded when the html is parsed.
474
475         # attributes
476         #                            src: <img>, <audio>, etc
477         #                         onload: only <body>?
478         #   archive,codebase,data,usemap: <object>
479         #                           href: <link>
480         #                 id,class,style: background: url(foo.png), etc
481         html = html.replace /(src|onload|archive|codebase|data|usemap|href|style|id|class)=['"][^"']*['"]/ig, '', html
482
483         elements = $(html)
484
485         valid_parts = ["Abbreviation", "Adjective", "Adverb", "Article", "Cardinal number", "Conjunction", "Determiner", "Interjection", "Noun", "Numeral", "Particle", "Preposition", "Pronoun", "Verb"]
486
487         edit_link_regex = new RegExp(' ?\\[edit\\] ?')
488
489         elements.each (i, el) ->
490                 #which tag: el.tagName
491                 if el.tagName is 'H2'
492                         # if we found a definition in the previous language section, run with it
493                         # (we only stop for verbs, in hopes of finding one in english)
494                         if found
495                                 return false # break
496                         part = false # mark us not being in a definition section unless the next section finds a part of speach header
497                         language = $(el).text().replace(edit_link_regex, '')
498                 if language and el.tagName is 'H3' or el.tagName is 'H4' # eg yak def uses one for english and one for dutch
499                         part = false
500                         text = $(el).text().replace(edit_link_regex, '')
501                         for p in valid_parts
502                                 if text is "#{p}"
503                                         part = p.toLowerCase()
504                                         # FIXME break
505                 if part and el.tagName is 'OL'
506                         $(el).children().each (i, el) ->
507                                 new_def = $(el).text()
508                                 if new_def.substr(0, 9) is '(obsolete' or new_def.substr(0, 8) is "(archaic"
509                                         key = 'obsolete'
510                                 else
511                                         if part is 'verb'
512                                                 key = 'verb'
513                                         else
514                                                 key = 'nonverb'
515                                 finds[key] ?= [part, new_def, language]
516                                 found = true
517                                 if part is 'verb'
518                                         # verbs are the best! stop scanning when we find one
519                                         return false # break
520                         if found.verb
521                                 return false # break
522
523         part_defs = (finds[i] for i in ['verb', 'nonverb', 'obsolete'] when finds[i])
524         unless part_defs.length
525                 return false
526
527         return part_defs[0]
528
529
530 look_up_definition = (word) ->
531         $definition_body.html "Looking up definition for \"#{word}\"."
532         $.ajax({
533                 url: "http://en.wiktionary.org/w/api.php?action=parse&format=json&page=#{word}"
534                 jsonpCallback: "lud_#{word}" # always use the same callback for the same word so it's cacheable
535                 dataType: 'jsonp'
536                 cache: true
537                 success: (data, error_msg, xhr) ->
538                         if data?.parse?.text?['*']?
539                                 tdl = extract_wiktionary_definiton data.parse.text['*']
540                                 if tdl
541                                         show_definition word, tdl[0], tdl[1], tdl[2]
542                                 else
543                                         $definition_body.html "Oops, could't find a definition for \"#{word}\"."
544                         else
545                                 $definition_body.html "Sorry, couldn't find a definition for \"#{word}\"."
546         })
547
548 board_as_txt = ->
549         ret = ''
550         index = 0
551         for i in [0 .. board_min_height * 2]
552                 unless i % 2
553                         ret += '   ' + board[j] for j in [board_min_height + index .. board_tiles - 1] by 2 * board_min_height + 1
554                 else
555                         ret += ' ' + board[j] + '  ' for j in [index .. board_tiles - 1] by 2 * board_min_height + 1
556                         index += 1
557
558                 ret += '\n'
559         return ret
560
561 start_over = ->
562         selected = []
563         score = 0
564         $score_display.html score
565         for i in [0...board_tiles]
566                 selected.push i
567         blip_selection()
568
569 init_start_over_link = ->
570         $('#start-over').click (event) ->
571                 event.preventDefault()
572                 if confirm "Are you sure you want to start over? There is no undo."
573                         start_over()
574
575 cur_tab = 'instructions'
576 tabtab_height = 20
577 tab_height = 150
578 init_tab = (t) ->
579         $('#' + t).click ->
580                 return if t is cur_tab
581                 $('#' + cur_tab).removeClass('selected-tab').addClass('tab').animate({height: tabtab_height}, 1000)
582                 $('#' + t).removeClass('tab').addClass('selected-tab').animate({height: tab_height}, 1000)
583                 cur_tab = t
584 init_tabs = ->
585         for t in ['instructions', 'definition', 'donate', 'restart']
586                 init_tab t
587
588 init_keybinding = ->
589         $(window).keydown (e) ->
590                 switch e.keyCode
591                         when 32, 10, 13
592                                 activate_selection()
593                         when 27
594                                 unselect_all()
595
596 $log = undefined
597 init_log = ->
598         $log = $('#log')
599 log = (msg) ->
600         console.log msg if console.log?
601
602 init_game = ->
603         init_log()
604         if $(window).height() >= 440
605                 $('#centerer').css('margin-top', '25px')
606         init_keybinding()
607         init_tabs()
608         init_board()
609         init_html_board()
610         init_start_over_link()
611
612 $(init_game)