home · contact · privacy
792b7c4f47db887b5593b49c256b37b55d1b4ef8
[plomrogue] / roguelike-server
1 #!/usr/bin/python3
2
3 # This file is part of PlomRogue. PlomRogue is licensed under the GPL version 3
4 # or any later version. For details on its copyright, license, and warranties,
5 # see the file NOTICE in the root directory of the PlomRogue source package.
6
7
8 import argparse
9 import errno
10 import os
11 import shlex
12 import shutil
13 import time
14 import ctypes
15 import math  # #
16
17
18 class RandomnessIO:
19     """"Interface to libplomrogue's pseudo-randomness generator."""
20
21     def set_seed(self, seed):
22         libpr.seed_rrand(1, seed)
23
24     def get_seed(self):
25         return libpr.seed_rrand(0, 0)
26
27     def next(self):
28         return libpr.rrand()
29
30     seed = property(get_seed, set_seed)
31
32
33 def prep_library():
34     """Prepare ctypes library at ./libplomrogue.so"""
35     libpath = ("./libplomrogue.so")
36     if not os.access(libpath, os.F_OK):
37         raise SystemExit("No library " + libpath + ", run ./redo first?")
38     libpr = ctypes.cdll.LoadLibrary(libpath)
39     libpr.seed_rrand.restype = ctypes.c_uint32
40     return libpr
41
42
43 def c_pointer_to_bytearray(ba):
44     """Return C char * pointer to ba."""
45     type = ctypes.c_char * len(ba)
46     return type.from_buffer(ba)
47
48
49 def strong_write(file, string):
50     """Apply write(string), then flush()."""
51     file.write(string)
52     file.flush()
53
54
55 def setup_server_io():
56     """Fill IO files DB with proper file( path)s. Write process IO test string.
57
58     Ensure IO files directory at server/. Remove any old input file if found.
59     Set up new input file for reading, and new output file for writing. Start
60     output file with process hash line of format PID + " " + floated UNIX time
61     (io_db["teststring"]). Raise SystemExit if file is found at path of either
62     record or save file plus io_db["tmp_suffix"].
63     """
64     def detect_atomic_leftover(path, tmp_suffix):
65         path_tmp = path + tmp_suffix
66         msg = "Found file '" + path_tmp + "' that may be a leftover from an " \
67               "aborted previous attempt to write '" + path + "'. Aborting " \
68              "until matter is resolved by removing it from its current path."
69         if os.access(path_tmp, os.F_OK):
70             raise SystemExit(msg)
71     io_db["teststring"] = str(os.getpid()) + " " + str(time.time())
72     io_db["save_wait"] = 0
73     io_db["verbose"] = False
74     io_db["record_chunk"] = ""
75     os.makedirs(io_db["path_server"], exist_ok=True)
76     io_db["file_out"] = open(io_db["path_out"], "w")
77     strong_write(io_db["file_out"], io_db["teststring"] + "\n")
78     if os.access(io_db["path_in"], os.F_OK):
79         os.remove(io_db["path_in"])
80     io_db["file_in"] = open(io_db["path_in"], "w")
81     io_db["file_in"].close()
82     io_db["file_in"] = open(io_db["path_in"], "r")
83     detect_atomic_leftover(io_db["path_save"], io_db["tmp_suffix"])
84     detect_atomic_leftover(io_db["path_record"], io_db["tmp_suffix"])
85
86
87 def cleanup_server_io():
88     """Close and (if io_db["kicked_by_rival"] false) remove files in io_db."""
89     def helper(file_key, path_key):
90         if file_key in io_db:
91             io_db[file_key].close()
92         if not io_db["kicked_by_rival"] \
93            and os.access(io_db[path_key], os.F_OK):
94             os.remove(io_db[path_key])
95     helper("file_in", "path_in")
96     helper("file_out", "path_out")
97     helper("file_worldstate", "path_worldstate")
98     if "file_record" in io_db:
99         io_db["file_record"].close()
100
101
102 def obey(command, prefix, replay=False, do_record=False):
103     """Call function from commands_db mapped to command's first token.
104
105     Tokenize command string with shlex.split(comments=True). If replay is set,
106     a non-meta command from the commands_db merely triggers obey() on the next
107     command from the records file. If not, non-meta commands set
108     io_db["worldstate_updateable"] to world_db["WORLD_EXISTS"], and, if
109     do_record is set, are recorded to io_db["record_chunk"], and save_world()
110     is called (and io_db["record_chunk"] written) if 15 seconds have passed
111     since the last time it was called. The prefix string is inserted into the
112     server's input message between its beginning 'input ' and ':'. All activity
113     is preceded by a server_test() call. Commands that start with a lowercase
114     letter are ignored when world_db["WORLD_ACTIVE"] is False/0.
115     """
116     server_test()
117     if io_db["verbose"]:
118         print("input " + prefix + ": " + command)
119     try:
120         tokens = shlex.split(command, comments=True)
121     except ValueError as err:
122         print("Can't tokenize command string: " + str(err) + ".")
123         return
124     if len(tokens) > 0 and tokens[0] in commands_db \
125        and len(tokens) == commands_db[tokens[0]][0] + 1:
126         if commands_db[tokens[0]][1]:
127             commands_db[tokens[0]][2](*tokens[1:])
128         elif tokens[0][0].islower() and not world_db["WORLD_ACTIVE"]:
129             print("Ignoring lowercase-starting commands when world inactive.")
130         elif replay:
131             print("Due to replay mode, reading command as 'go on in record'.")
132             line = io_db["file_record"].readline()
133             if len(line) > 0:
134                 obey(line.rstrip(), io_db["file_record"].prefix
135                      + str(io_db["file_record"].line_n))
136                 io_db["file_record"].line_n = io_db["file_record"].line_n + 1
137             else:
138                 print("Reached end of record file.")
139         else:
140             commands_db[tokens[0]][2](*tokens[1:])
141             if do_record:
142                 io_db["record_chunk"] += command + "\n"
143                 if time.time() > io_db["save_wait"] + 15:
144                     atomic_write(io_db["path_record"], io_db["record_chunk"],
145                                  do_append=True)
146                     if world_db["WORLD_ACTIVE"]:
147                         save_world()
148                     io_db["record_chunk"] = ""
149                     io_db["save_wait"] = time.time()
150             io_db["worldstate_updateable"] = world_db["WORLD_ACTIVE"]
151     elif 0 != len(tokens):
152         print("Invalid command/argument, or bad number of tokens.")
153
154
155 def atomic_write(path, text, do_append=False, delete=True):
156     """Atomic write of text to file at path, appended if do_append is set."""
157     path_tmp = path + io_db["tmp_suffix"]
158     mode = "w"
159     if do_append:
160         mode = "a"
161         if os.access(path, os.F_OK):
162             shutil.copyfile(path, path_tmp)
163     file = open(path_tmp, mode)
164     strong_write(file, text)
165     file.close()
166     if delete and os.access(path, os.F_OK):
167         os.remove(path)
168     os.rename(path_tmp, path)
169
170
171 def save_world():
172     """Save all commands needed to reconstruct current world state."""
173
174     def quote(string):
175         string = string.replace("\u005C", '\u005C\u005C')
176         return '"' + string.replace('"', '\u005C"') + '"'
177
178     def mapsetter(key):
179         def helper(id=None):
180             string = ""
181             if key == "MAP" or world_db["Things"][id][key]:
182                 map = world_db["MAP"] if key == "MAP" \
183                                       else world_db["Things"][id][key]
184                 length = world_db["MAP_LENGTH"]
185                 for i in range(length):
186                     line = map[i * length:(i * length) + length].decode()
187                     string = string + key + " " + str(i) + " " + quote(line) \
188                              + "\n"
189             return string
190         return helper
191
192     def memthing(id):
193         string = ""
194         for memthing in world_db["Things"][id]["T_MEMTHING"]:
195             string = string + "T_MEMTHING " + str(memthing[0]) + " " + \
196                      str(memthing[1]) + " " + str(memthing[2]) + "\n"
197         return string
198
199     def helper(category, id_string, special_keys={}):
200         string = ""
201         for id in world_db[category]:
202             string = string + id_string + " " + str(id) + "\n"
203             for key in world_db[category][id]:
204                 if not key in special_keys:
205                     x = world_db[category][id][key]
206                     argument = quote(x) if str == type(x) else str(x)
207                     string = string + key + " " + argument + "\n"
208                 elif special_keys[key]:
209                     string = string + special_keys[key](id)
210         return string
211
212     string = ""
213     for key in world_db:
214         if (dict != type(world_db[key])
215             and key != "altar"  # #
216             and key != "MAP" and key != "WORLD_ACTIVE"):
217             string = string + key + " " + str(world_db[key]) + "\n"
218     string = string + mapsetter("MAP")()
219     string = string + helper("ThingActions", "TA_ID")
220     string = string + helper("ThingTypes", "TT_ID", {"TT_CORPSE_ID": False})
221     for id in world_db["ThingTypes"]:
222         string = string + "TT_ID " + str(id) + "\n" + "TT_CORPSE_ID " + \
223                  str(world_db["ThingTypes"][id]["TT_CORPSE_ID"]) + "\n"
224     string = string + helper("Things", "T_ID",
225                              {"T_CARRIES": False, "carried": False,
226                               "T_MEMMAP": mapsetter("T_MEMMAP"),
227                               "T_MEMTHING": memthing, "fovmap": False,
228                               "T_MEMDEPTHMAP": mapsetter("T_MEMDEPTHMAP")})
229     for id in world_db["Things"]:
230         if [] != world_db["Things"][id]["T_CARRIES"]:
231             string = string + "T_ID " + str(id) + "\n"
232             for carried_id in world_db["Things"][id]["T_CARRIES"]:
233                 string = string + "T_CARRIES " + str(carried_id) + "\n"
234     string = string + "SEED_RANDOMNESS " + str(rand.seed) + "\n" + \
235              "WORLD_ACTIVE " + str(world_db["WORLD_ACTIVE"])
236     atomic_write(io_db["path_save"], string)
237
238
239 def obey_lines_in_file(path, name, do_record=False):
240     """Call obey() on each line of path's file, use name in input prefix."""
241     file = open(path, "r")
242     line_n = 1
243     for line in file.readlines():
244         obey(line.rstrip(), name + "file line " + str(line_n),
245              do_record=do_record)
246         line_n = line_n + 1
247     file.close()
248
249
250 def parse_command_line_arguments():
251     """Return settings values read from command line arguments."""
252     parser = argparse.ArgumentParser()
253     parser.add_argument('-s', nargs='?', type=int, dest='replay', const=1,
254                         action='store')
255     parser.add_argument('-l', nargs="?", const="save", dest='savefile',
256                         action="store")
257     parser.add_argument('-v', dest='verbose', action='store_true')
258     opts, unknown = parser.parse_known_args()
259     return opts
260
261
262 def server_test():
263     """Ensure valid server out file belonging to current process.
264
265     This is done by comparing io_db["teststring"] to what's found at the start
266     of the current file at io_db["path_out"]. On failure, set
267     io_db["kicked_by_rival"] and raise SystemExit.
268     """
269     if not os.access(io_db["path_out"], os.F_OK):
270         raise SystemExit("Server output file has disappeared.")
271     file = open(io_db["path_out"], "r")
272     test = file.readline().rstrip("\n")
273     file.close()
274     if test != io_db["teststring"]:
275         io_db["kicked_by_rival"] = True
276         msg = "Server test string in server output file does not match. This" \
277               " indicates that the current server process has been " \
278               "superseded by another one."
279         raise SystemExit(msg)
280
281
282 def read_command():
283     """Return next newline-delimited command from server in file.
284
285     Keep building return string until a newline is encountered. Pause between
286     unsuccessful reads, and after too much waiting, run server_test().
287     """
288     wait_on_fail = 0.03333
289     max_wait = 5
290     now = time.time()
291     command = ""
292     while True:
293         add = io_db["file_in"].readline()
294         if len(add) > 0:
295             command = command + add
296             if len(command) > 0 and "\n" == command[-1]:
297                 command = command[:-1]
298                 break
299         else:
300             time.sleep(wait_on_fail)
301             if now + max_wait < time.time():
302                 server_test()
303                 now = time.time()
304     return command
305
306
307 def try_worldstate_update():
308     """Write worldstate file if io_db["worldstate_updateable"] is set."""
309     if io_db["worldstate_updateable"]:
310
311         def draw_visible_Things(map, run):
312             for id in world_db["Things"]:
313                 type = world_db["Things"][id]["T_TYPE"]
314                 consumable = world_db["ThingTypes"][type]["TT_TOOL"] == "food"
315                 alive = world_db["ThingTypes"][type]["TT_LIFEPOINTS"]
316                 if (0 == run and not consumable and not alive) \
317                    or (1 == run and consumable and not alive) \
318                    or (2 == run and alive):
319                     y = world_db["Things"][id]["T_POSY"]
320                     x = world_db["Things"][id]["T_POSX"]
321                     fovflag = world_db["Things"][0]["fovmap"][(y * length) + x]
322                     if 'v' == chr(fovflag):
323                         c = world_db["ThingTypes"][type]["TT_SYMBOL"]
324                         map[(y * length) + x] = ord(c)
325
326         def write_map(string, map):
327             for i in range(length):
328                 line = map[i * length:(i * length) + length].decode()
329                 string = string + line + "\n"
330             return string
331
332         inventory = ""
333         if [] == world_db["Things"][0]["T_CARRIES"]:
334             inventory = "(none)\n"
335         else:
336             for id in world_db["Things"][0]["T_CARRIES"]:
337                 type_id = world_db["Things"][id]["T_TYPE"]
338                 name = world_db["ThingTypes"][type_id]["TT_NAME"]
339                 inventory = inventory + name + "\n"
340         # 7DRL additions:  GOD_MOOD, GOD_FAVOR
341         string = str(world_db["TURN"]) + "\n" + \
342                  str(world_db["GOD_MOOD"]) + "\n" + \
343                  str(world_db["GOD_FAVOR"]) + "\n" + \
344                  str(world_db["Things"][0]["T_LIFEPOINTS"]) + "\n" + \
345                  str(world_db["Things"][0]["T_SATIATION"]) + "\n" + \
346                  inventory + "%\n" + \
347                  str(world_db["Things"][0]["T_POSY"]) + "\n" + \
348                  str(world_db["Things"][0]["T_POSX"]) + "\n" + \
349                  str(world_db["MAP_LENGTH"]) + "\n"
350         length = world_db["MAP_LENGTH"]
351         fov = bytearray(b' ' * (length ** 2))
352         for pos in range(length ** 2):
353             if 'v' == chr(world_db["Things"][0]["fovmap"][pos]):
354                 fov[pos] = world_db["MAP"][pos]
355         for i in range(3):
356             draw_visible_Things(fov, i)
357         string = write_map(string, fov)
358         mem = world_db["Things"][0]["T_MEMMAP"][:]
359         for i in range(2):
360             for mt in world_db["Things"][0]["T_MEMTHING"]:
361                 consumable = world_db["ThingTypes"][mt[0]]["TT_TOOL"] == "food"
362                 if (i == 0 and not consumable) or (i == 1 and consumable):
363                     c = world_db["ThingTypes"][mt[0]]["TT_SYMBOL"]
364                     mem[(mt[1] * length) + mt[2]] = ord(c)
365         string = write_map(string, mem)
366         atomic_write(io_db["path_worldstate"], string, delete=False)
367         strong_write(io_db["file_out"], "WORLD_UPDATED\n")
368         io_db["worldstate_updateable"] = False
369
370
371 def replay_game():
372     """Replay game from record file.
373
374     Use opts.replay as breakpoint turn to which to replay automatically before
375     switching to manual input by non-meta commands in server input file
376     triggering further reads of record file. Ensure opts.replay is at least 1.
377     Run try_worldstate_update() before each interactive obey()/read_command().
378     """
379     if opts.replay < 1:
380         opts.replay = 1
381     print("Replay mode. Auto-replaying up to turn " + str(opts.replay) +
382           " (if so late a turn is to be found).")
383     if not os.access(io_db["path_record"], os.F_OK):
384         raise SystemExit("No record file found to replay.")
385     io_db["file_record"] = open(io_db["path_record"], "r")
386     io_db["file_record"].prefix = "record file line "
387     io_db["file_record"].line_n = 1
388     while world_db["TURN"] < opts.replay:
389         line = io_db["file_record"].readline()
390         if "" == line:
391             break
392         obey(line.rstrip(), io_db["file_record"].prefix
393              + str(io_db["file_record"].line_n))
394         io_db["file_record"].line_n = io_db["file_record"].line_n + 1
395     while True:
396         try_worldstate_update()
397         obey(read_command(), "in file", replay=True)
398
399
400 def play_game():
401     """Play game by server input file commands. Before, load save file found.
402
403     If no save file is found, a new world is generated from the commands in the
404     world config plus a 'MAKE WORLD [current Unix timestamp]'. Record this
405     command and all that follow via the server input file. Run
406     try_worldstate_update() before each interactive obey()/read_command().
407     """
408     if os.access(io_db["path_save"], os.F_OK):
409         obey_lines_in_file(io_db["path_save"], "save")
410     else:
411         if not os.access(io_db["path_worldconf"], os.F_OK):
412             msg = "No world config file from which to start a new world."
413             raise SystemExit(msg)
414         obey_lines_in_file(io_db["path_worldconf"], "world config ",
415                            do_record=True)
416         obey("MAKE_WORLD " + str(int(time.time())), "in file", do_record=True)
417     while True:
418         try_worldstate_update()
419         obey(read_command(), "in file", do_record=True)
420
421
422 def make_map():
423     """(Re-)make island map.
424
425     Let "~" represent water, "." land, "X" trees: Build island shape randomly,
426     start with one land cell in the middle, then go into cycle of repeatedly
427     selecting a random sea cell and transforming it into land if it is neighbor
428     to land. The cycle ends when a land cell is due to be created at the map's
429     border. Then put some trees on the map (TODO: more precise algorithm desc).
430     """
431     # 7DRL: Also add some ":" cells, and (not surrounded by trees!) "_" altar.
432
433     def is_neighbor(coordinates, type):
434         y = coordinates[0]
435         x = coordinates[1]
436         length = world_db["MAP_LENGTH"]
437         ind = y % 2
438         diag_west = x + (ind > 0)
439         diag_east = x + (ind < (length - 1))
440         pos = (y * length) + x
441         if (y > 0 and diag_east
442             and type == chr(world_db["MAP"][pos - length + ind])) \
443            or (x < (length - 1)
444                and type == chr(world_db["MAP"][pos + 1])) \
445            or (y < (length - 1) and diag_east
446                and type == chr(world_db["MAP"][pos + length + ind])) \
447            or (y > 0 and diag_west
448                and type == chr(world_db["MAP"][pos - length - (not ind)])) \
449            or (x > 0
450                and type == chr(world_db["MAP"][pos - 1])) \
451            or (y < (length - 1) and diag_west
452                and type == chr(world_db["MAP"][pos + length - (not ind)])):
453             return True
454         return False
455
456     world_db["MAP"] = bytearray(b'~' * (world_db["MAP_LENGTH"] ** 2))
457     length = world_db["MAP_LENGTH"]
458     add_half_width = (not (length % 2)) * int(length / 2)
459     world_db["MAP"][int((length ** 2) / 2) + add_half_width] = ord(".")
460     while (1):
461         y = rand.next() % length
462         x = rand.next() % length
463         pos = (y * length) + x
464         if "~" == chr(world_db["MAP"][pos]) and is_neighbor((y, x), "."):
465             if y == 0 or y == (length - 1) or x == 0 or x == (length - 1):
466                 break
467             world_db["MAP"][pos] = ord(".")
468     n_trees = int((length ** 2) / 16)
469     i_trees = 0
470     while (i_trees <= n_trees):
471         single_allowed = rand.next() % 32
472         y = rand.next() % length
473         x = rand.next() % length
474         pos = (y * length) + x
475         if "." == chr(world_db["MAP"][pos]) \
476           and ((not single_allowed) or is_neighbor((y, x), "X")):
477             world_db["MAP"][pos] = ord("X")
478             i_trees += 1
479     # This all-too-precise replica of the original C code misses iter_limit().
480     n_colons = int((length ** 2) / 16)  # #
481     i_colons = 0  # #
482     while (i_colons <= n_colons):  # #
483         single_allowed = rand.next() % 256  # #
484         y = rand.next() % length  # #
485         x = rand.next() % length  # #
486         pos = (y * length) + x  # #
487         if ("." == chr(world_db["MAP"][pos])  # #
488           and ((not single_allowed) or is_neighbor((y, x), ":"))):  # #
489             world_db["MAP"][pos] = ord(":")  # #
490             i_colons += 1  # #
491     altar_placed = False  # #
492     while not altar_placed:  # #
493         y = rand.next() % length  # #
494         x = rand.next() % length  # #
495         pos = (y * length) + x  # #
496         if (("." == chr(world_db["MAP"][pos]  # #
497              or ":" == chr(world_db["MAP"][pos]))
498             and not is_neighbor((y, x), "X"))):  # #
499             world_db["MAP"][pos] = ord("_")  # #
500             world_db["altar"] = (y, x)  # #
501             altar_placed = True  # #
502
503
504 def update_map_memory(t, age_map=True):
505     """Update t's T_MEMMAP with what's in its FOV now,age its T_MEMMEPTHMAP."""
506
507     def age_some_memdepthmap_on_nonfov_cells():
508         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
509         # ord_v = ord("v")
510         # ord_0 = ord("0")
511         # ord_9 = ord("9")
512         # for pos in [pos for pos in range(world_db["MAP_LENGTH"] ** 2)
513         #             if not ord_v == t["fovmap"][pos]
514         #             if ord_0 <= t["T_MEMDEPTHMAP"][pos]
515         #             if ord_9 > t["T_MEMDEPTHMAP"][pos]
516         #             if not rand.next() % (2 **
517         #                                   (t["T_MEMDEPTHMAP"][pos] - 48))]:
518         #     t["T_MEMDEPTHMAP"][pos] += 1
519         memdepthmap = c_pointer_to_bytearray(t["T_MEMDEPTHMAP"])
520         fovmap = c_pointer_to_bytearray(t["fovmap"])
521         libpr.age_some_memdepthmap_on_nonfov_cells(memdepthmap, fovmap)
522
523     if not t["T_MEMMAP"]:
524         t["T_MEMMAP"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
525     if not t["T_MEMDEPTHMAP"]:
526         t["T_MEMDEPTHMAP"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
527     ord_v = ord("v")
528     ord_0 = ord("0")
529     ord_space = ord(" ")
530     for pos in [pos for pos in range(world_db["MAP_LENGTH"] ** 2)
531                 if ord_v == t["fovmap"][pos]]:
532         t["T_MEMDEPTHMAP"][pos] = ord_0
533         t["T_MEMMAP"][pos] = world_db["MAP"][pos]
534     if age_map:
535         age_some_memdepthmap_on_nonfov_cells()
536     t["T_MEMTHING"] = [mt for mt in t["T_MEMTHING"]
537                        if ord_v != t["fovmap"][(mt[1] * world_db["MAP_LENGTH"])
538                                                + mt[2]]]
539     for id in [id for id in world_db["Things"]
540                if not world_db["Things"][id]["carried"]]:
541         type = world_db["Things"][id]["T_TYPE"]
542         if not world_db["ThingTypes"][type]["TT_LIFEPOINTS"]:
543             y = world_db["Things"][id]["T_POSY"]
544             x = world_db["Things"][id]["T_POSX"]
545             if ord_v == t["fovmap"][(y * world_db["MAP_LENGTH"]) + x]:
546                 t["T_MEMTHING"].append((type, y, x))
547
548
549 def set_world_inactive():
550     """Set world_db["WORLD_ACTIVE"] to 0 and remove worldstate file."""
551     server_test()
552     if os.access(io_db["path_worldstate"], os.F_OK):
553         os.remove(io_db["path_worldstate"])
554     world_db["WORLD_ACTIVE"] = 0
555
556
557 def integer_test(val_string, min, max=None):
558     """Return val_string if possible integer >= min and <= max, else None."""
559     try:
560         val = int(val_string)
561         if val < min or (max is not None and val > max):
562             raise ValueError
563         return val
564     except ValueError:
565         msg = "Ignoring: Please use integer >= " + str(min)
566         if max is not None:
567             msg += " and <= " + str(max)
568         msg += "."
569         print(msg)
570         return None
571
572
573 def setter(category, key, min, max=None):
574     """Build setter for world_db([category + "s"][id])[key] to >=min/<=max."""
575     if category is None:
576         def f(val_string):
577             val = integer_test(val_string, min, max)
578             if None != val:
579                 world_db[key] = val
580     else:
581         if category == "Thing":
582             id_store = command_tid
583             decorator = test_Thing_id
584         elif category == "ThingType":
585             id_store = command_ttid
586             decorator = test_ThingType_id
587         elif category == "ThingAction":
588             id_store = command_taid
589             decorator = test_ThingAction_id
590
591         @decorator
592         def f(val_string):
593             val = integer_test(val_string, min, max)
594             if None != val:
595                 world_db[category + "s"][id_store.id][key] = val
596     return f
597
598
599 def build_fov_map(t):
600     """Build Thing's FOV map."""
601     t["fovmap"] = bytearray(b'v' * (world_db["MAP_LENGTH"] ** 2))
602     fovmap = c_pointer_to_bytearray(t["fovmap"])
603     map = c_pointer_to_bytearray(world_db["MAP"])
604     if libpr.build_fov_map(t["T_POSY"], t["T_POSX"], fovmap, map):
605         raise RuntimeError("Malloc error in build_fov_Map().")
606
607
608 def log_help():
609     """Send quick usage info to log."""
610     strong_write(io_db["file_out"], "LOG "
611                  + "Use 'w'/'e'/'s'/'d'/'x'/'c' to move, and 'w' to wait.\n")
612     strong_write(io_db["file_out"], "LOG "
613                  + "Use 'p' to pick up objects, and 'D' to drop them.\n")
614     strong_write(io_db["file_out"], "LOG "
615                  + "Some objects can be used (such as: eaten) by 'u' if "
616                  + "they are in your inventory. "
617                  + "Use 'UP'/'DOWN' to navigate the inventory.\n")
618     strong_write(io_db["file_out"], "LOG "
619                  + "Use 'l' to toggle 'look' mode (move an exploration cursor "
620                  + "instead of the player over the map).\n")
621     strong_write(io_db["file_out"], "LOG See README file for more details.\n")
622     strong_write(io_db["file_out"], "LOG \n")
623
624
625 def decrement_lifepoints(t):
626     """Decrement t's lifepoints by 1, and if to zero, corpse it.
627
628     If t is the player avatar, only blank its fovmap, so that the client may
629     still display memory data. On non-player things, erase fovmap and memory.
630     Dying actors drop all their things.
631     """
632     # 7DRL: Also decrements God's mood; deaths heavily so.
633     # 7DRL: Return 1 if death, else 0.
634     t["T_LIFEPOINTS"] -= 1
635     world_db["GOD_MOOD"] -= 1  # #
636     if 0 == t["T_LIFEPOINTS"]:
637         sadness = world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"]  # #
638         world_db["GOD_MOOD"] -= sadness  # #        
639         for id in t["T_CARRIES"]:
640             t["T_CARRIES"].remove(id)
641             world_db["Things"][id]["T_POSY"] = t["T_POSY"]
642             world_db["Things"][id]["T_POSX"] = t["T_POSX"]
643             world_db["Things"][id]["carried"] = False
644         t["T_TYPE"] = world_db["ThingTypes"][t["T_TYPE"]]["TT_CORPSE_ID"]
645         if world_db["Things"][0] == t:
646             t["fovmap"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
647             strong_write(io_db["file_out"], "LOG You die.\n")
648             strong_write(io_db["file_out"],
649                          "LOG See README on how to start over.\n")
650         else:
651             t["fovmap"] = False
652             t["T_MEMMAP"] = False
653             t["T_MEMDEPTHMAP"] = False
654             t["T_MEMTHING"] = []
655         return sadness  # #
656     return 0  # #
657
658
659 def add_gods_favor(i): # #
660     """"Add to GOD_FAVOR, multiplied with factor growing log. with GOD_MOOD."""
661     def favor_multiplier(i):
662         x = 100
663         threshold = math.e * x
664         mood = world_db["GOD_MOOD"]
665         if i > 0:
666             if mood > threshold:
667                 i = i * math.log(mood / x)
668             elif -mood > threshold:
669                 i = i / math.log(-mood / x)
670         elif i < 0:
671             if -mood > threshold:
672                 i = i * math.log(-mood / x)
673             if mood > threshold:
674                 i = i / math.log(mood / x)
675         return int(i)
676     world_db["GOD_FAVOR"] += favor_multiplier(i)
677
678
679 def mv_yx_in_dir_legal(dir, y, x):
680     """Wrapper around libpr.mv_yx_in_dir_legal to simplify its use."""
681     dir_c = dir.encode("ascii")[0]
682     test = libpr.mv_yx_in_dir_legal_wrap(dir_c, y, x)
683     if -1 == test:
684         raise RuntimeError("Too much wrapping in mv_yx_in_dir_legal_wrap()!")
685     return (test, libpr.result_y(), libpr.result_x())
686
687
688 def enter_altar():  # #
689      """What happens when the player enters the altar."""
690      if world_db["FAVOR_STAGE"] > 9000:
691         strong_write(io_db["file_out"],
692                      "LOG You step on a soul-less slab of stone.\n")
693         return
694      strong_write(io_db["file_out"], "LOG YOU ENTER SACRED GROUND.\n")
695      if world_db["FAVOR_STAGE"] == 0:
696          world_db["FAVOR_STAGE"] = 1
697          strong_write(io_db["file_out"], "LOG The Island God speaks to you: "
698                       + "\"I don't trust you. You intrude on the island's "
699                       + "affairs. I think you're a nuisance at best, and a "
700                       + "danger to my children at worst. I will give you a "
701                       + "chance to lighten my mood, however: For a while now, "
702                       + "I've been trying to spread the plant "
703                       + world_db["ThingTypes"][world_db["PLANT_0"]]["TT_NAME"]
704                       + " (\""
705                       + world_db["ThingTypes"][world_db["PLANT_0"]]["TT_SYMBOL"]
706                       + "\"). I have not been very successful so far. Maybe "
707                       + "you can make yourself useful there. I will count "
708                       + "each further "
709                       + world_db["ThingTypes"][world_db["PLANT_0"]]["TT_NAME"]
710                       + " that grows to your favor.\n")
711      elif world_db["FAVOR_STAGE"] == 1 and world_db["GOD_FAVOR"] >= 100:
712          world_db["FAVOR_STAGE"] = 2
713          strong_write(io_db["file_out"], "LOG The Island God speaks to you: "
714                       + "\"You could have done worse so far. Maybe you are not "
715                       + "the worst to happen to this island since the metal "
716                       + "birds threw the great lightning ball. Maybe you can "
717                       + "help me spread another plant. It multiplies faster, "
718                       + "and it is highly nutritious: "
719                       + world_db["ThingTypes"][world_db["PLANT_1"]]["TT_NAME"]
720                       + " (\""
721                       + world_db["ThingTypes"][world_db["PLANT_1"]]["TT_SYMBOL"]
722                       + "\"). It is new. I give you the only example. Be very "
723                       + "careful with it! I also give you another tool that "
724                       + "might be helpful.\n")
725          id = id_setter(-1, "Things")
726          world_db["Things"][id] = new_Thing(world_db["PLANT_1"],
727                                             world_db["altar"])
728          id = id_setter(-1, "Things")
729          world_db["Things"][id] = new_Thing(world_db["TOOL_0"],
730                                             world_db["altar"])
731      elif world_db["FAVOR_STAGE"] == 2 and \
732           0 == len([id for id in world_db["Things"]
733                    if world_db["Things"][id]["T_TYPE"]
734                       == world_db["PLANT_1"]]):
735          strong_write(io_db["file_out"], "LOG The Island God speaks to you: "
736                       + "\"I am greatly disappointed that you lost all "
737                       + world_db["ThingTypes"][world_db["PLANT_1"]]["TT_NAME"]
738                       + " this island had. Here is another one. It cost me "
739                       + " great work. Be more careful this time.\n")
740          id = id_setter(-1, "Things")
741          world_db["Things"][id] = new_Thing(world_db["PLANT_1"],
742                                             world_db["altar"])
743          add_gods_favor(-250)
744      elif world_db["GOD_FAVOR"] > 9000:
745          world_db["FAVOR_STAGE"] = 9001
746          strong_write(io_db["file_out"], "LOG The Island God speaks to you: "
747                       + "\"You have proven yourself worthy of my respect. "
748                       + "You were a good citizen to the island, and sometimes "
749                       + "a better steward to its inhabitants than me. The "
750                       + "island shall miss you when you leave. But you have "
751                       + "earned the right to do so. Take this "
752                       + world_db["ThingTypes"][world_db["SLIPPERS"]]["TT_NAME"]
753                       + " and USE it when you please. It will take you to "
754                       + "where you came from. (But do feel free to stay here "
755                       + "as long as you like.)\"\n")
756          id = id_setter(-1, "Things")
757          world_db["Things"][id] = new_Thing(world_db["SLIPPERS"],
758                                             world_db["altar"])
759
760
761 def actor_wait(t):
762     """Make t do nothing (but loudly, if player avatar)."""
763     if t == world_db["Things"][0]:
764         strong_write(io_db["file_out"], "LOG You wait.\n")
765
766
767 def actor_move(t):
768     """If passable, move/collide(=attack) thing into T_ARGUMENT's direction."""
769     # 7DRL: Player wounding (worse: killing) others will lower God's favor.
770     # 7DRL: Player entering the altar triggers enter_altar().
771     # 7DRL: Player with axe chops down trees.
772     passable = False
773     move_result = mv_yx_in_dir_legal(chr(t["T_ARGUMENT"]),
774                                      t["T_POSY"], t["T_POSX"])
775     if 1 == move_result[0]:
776         pos = (move_result[1] * world_db["MAP_LENGTH"]) + move_result[2]
777         hitted = [id for id in world_db["Things"]
778                   if world_db["Things"][id] != t
779                   if world_db["Things"][id]["T_LIFEPOINTS"]
780                   if world_db["Things"][id]["T_POSY"] == move_result[1]
781                   if world_db["Things"][id]["T_POSX"] == move_result[2]]
782         if len(hitted):
783             hit_id = hitted[0]
784             if t == world_db["Things"][0]:
785                 hitted_type = world_db["Things"][hit_id]["T_TYPE"]
786                 hitted_name = world_db["ThingTypes"][hitted_type]["TT_NAME"]
787                 strong_write(io_db["file_out"], "LOG You wound " + hitted_name
788                                                 + ".\n")
789                 add_gods_favor(-1)  # #
790             elif 0 == hit_id:
791                 hitter_name = world_db["ThingTypes"][t["T_TYPE"]]["TT_NAME"]
792                 strong_write(io_db["file_out"], "LOG " + hitter_name +
793                                                 " wounds you.\n")
794             test = decrement_lifepoints(world_db["Things"][hit_id])  # #(test=)
795             if test and t == world_db["Things"][0]:  # #
796                 add_gods_favor(-test)  # #
797             return
798         if (ord("X") == world_db["MAP"][pos]  # #
799             or ord("|") == world_db["MAP"][pos]):  # #
800             carries_axe = False  # #
801             for id in t["T_CARRIES"]:  # # 
802                 type = world_db["Things"][id]["T_TYPE"]  # #
803                 if world_db["ThingTypes"][type]["TT_TOOL"] == "axe":  # #
804                     carries_axe = True  # #
805                     break  # #
806             if carries_axe:  # #
807                 axe_name = world_db["ThingTypes"][type]["TT_NAME"]  # #
808                 if t == world_db["Things"][0]:  # #
809                     strong_write(io_db["file_out"], "LOG With your "  # #
810                                                     + axe_name  # #
811                                                     + ", you chop!\n")  # #
812                     add_gods_favor(-1)  # #
813                 chop_power = world_db["ThingTypes"][type]["TT_TOOLPOWER"]
814                 case_X = world_db["MAP"][pos] == ord("X")  # #
815                 if (chop_power > 0  # #
816                     and ((case_X and  # #
817                           0 == int(rand.next() / chop_power))  # #
818                     or (not case_X and  # #
819                              0 == int(rand.next() / (3 * chop_power))))):  # #
820                     if t == world_db["Things"][0]:  # #
821                         strong_write(io_db["file_out"],  # #
822                                      "LOG You chop it down.\n")  # #
823                     add_gods_favor(-10)  # #
824                     world_db["MAP"][pos] = ord(".")   # #
825                     i = 3 if case_X else 1  # #
826                     for i in range(i):  # #
827                         id = id_setter(-1, "Things")  # #
828                         world_db["Things"][id] = \
829                           new_Thing(world_db["LUMBER"],  # #
830                                     (move_result[1], move_result[2]))  # # 
831                     build_fov_map(t)  # #
832                 return   # #
833         passable = ("." == chr(world_db["MAP"][pos]) or
834                     ":" == chr(world_db["MAP"][pos]) or # #
835                     "_" == chr(world_db["MAP"][pos])) # #
836     dir = [dir for dir in directions_db
837            if directions_db[dir] == chr(t["T_ARGUMENT"])][0]
838     if passable:
839         t["T_POSY"] = move_result[1]
840         t["T_POSX"] = move_result[2]
841         for id in t["T_CARRIES"]:
842             world_db["Things"][id]["T_POSY"] = move_result[1]
843             world_db["Things"][id]["T_POSX"] = move_result[2]
844         build_fov_map(t)
845         if t == world_db["Things"][0]:
846             strong_write(io_db["file_out"], "LOG You move " + dir + ".\n")
847             if (move_result[1] == world_db["altar"][0] and  # #
848                 move_result[2] == world_db["altar"][1]):  # #
849                 enter_altar()  # #
850     elif t == world_db["Things"][0]:
851         strong_write(io_db["file_out"], "LOG You fail to move " + dir + ".\n")
852
853
854 def actor_pick_up(t):
855     """Make t pick up (topmost?) Thing from ground into inventory."""
856     # Topmostness is actually not defined so far. Picks most nutritious Thing.
857     # 7DRL: Non-player picking up player-dropped consumable -> GOD_FAVOR gain.
858     used_slots = len(t["T_CARRIES"]) # #
859     if used_slots < world_db["ThingTypes"][t["T_TYPE"]]["TT_STORAGE"]: # #
860         ids = [id for id in world_db["Things"] if world_db["Things"][id] != t
861                if not world_db["Things"][id]["carried"]
862                if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
863                if world_db["Things"][id]["T_POSX"] == t["T_POSX"]]
864         if len(ids):
865             highest_id = ids[0]
866             nutritious = 0
867             for id in ids:
868                 type = world_db["Things"][id]["T_TYPE"]
869                 if world_db["ThingTypes"][type]["TT_TOOL"] == "food" \
870                 and world_db["ThingTypes"][type]["TT_TOOLPOWER"] > nutritious:
871                     nutritious = world_db["ThingTypes"][type]["TT_TOOLPOWER"]
872                     highest_id = id
873             world_db["Things"][highest_id]["carried"] = True
874             type = world_db["Things"][highest_id]["T_TYPE"]  # #
875             if (t != world_db["Things"][0] # #
876                 and world_db["Things"][highest_id]["T_PLAYERDROP"]  # #
877                 and world_db["ThingTypes"][type]["TT_TOOL"] == "food"):  # #
878                 score = world_db["ThingTypes"][type]["TT_TOOLPOWER"] / 32  # #
879                 add_gods_favor(score)  # #
880                 world_db["Things"][highest_id]["T_PLAYERDROP"] = 0  # #
881             t["T_CARRIES"].append(highest_id)
882             if t == world_db["Things"][0]:
883                 strong_write(io_db["file_out"], "LOG You pick up an object.\n")
884         elif t == world_db["Things"][0]:
885             err = "You try to pick up an object, but there is none."
886             strong_write(io_db["file_out"], "LOG " + err + "\n")
887     elif t == world_db["Things"][0]: # #
888         strong_write(io_db["file_out"], "LOG Can't pick up object: " + # #
889                                         "No storage room to carry more.\n") # #
890
891
892 def actor_drop(t):
893     """Make t rop Thing from inventory to ground indexed by T_ARGUMENT."""
894     # TODO: Handle case where T_ARGUMENT matches nothing.
895     if len(t["T_CARRIES"]):
896         id = t["T_CARRIES"][t["T_ARGUMENT"]]
897         t["T_CARRIES"].remove(id)
898         world_db["Things"][id]["carried"] = False
899         if t == world_db["Things"][0]:
900             strong_write(io_db["file_out"], "LOG You drop an object.\n")
901             world_db["Things"][id]["T_PLAYERDROP"] = 1  # #
902     elif t == world_db["Things"][0]:
903         err = "You try to drop an object, but you own none."
904         strong_write(io_db["file_out"], "LOG " + err + "\n")
905
906
907 def actor_use(t):
908     """Make t use (for now: consume) T_ARGUMENT-indexed Thing in inventory."""
909     # TODO: Handle case where T_ARGUMENT matches nothing.
910     # 7DLR: Handle SLIPPERS-type Thing use.
911     if len(t["T_CARRIES"]):
912         id = t["T_CARRIES"][t["T_ARGUMENT"]]
913         type = world_db["Things"][id]["T_TYPE"]
914         if type == world_db["SLIPPERS"]:  # #
915             if t == world_db["Things"][0]:  # #
916                 strong_write(io_db["file_out"], "LOG You use the "  # #
917                              + world_db["ThingTypes"][type]["TT_NAME"]  # #
918                              + ". It glows in wondrous colors, and emits "  # #
919                              + "a sound as if from a dying cat. The "  # #
920                              + "Island God laughs.\n")  # #
921             t["T_LIFEPOINTS"] = 1  # #
922             decrement_lifepoints(t)  # #
923         elif (world_db["ThingTypes"][type]["TT_TOOL"] == "axe"  # #
924               and t == world_db["Things"][0]):  # #
925                 strong_write(io_db["file_out"],  # #
926                              "LOG To use this item for chopping, move "  # #
927                              "towards a tree while carrying it in "  # #
928                              "your inventory.\n")  # #
929         elif (world_db["ThingTypes"][type]["TT_TOOL"] == "carpentry"):  # #
930             pos = t["T_POSY"] * world_db["MAP_LENGTH"] + t["T_POSX"]
931             if (world_db["MAP"][pos] == ord("X")  # #
932                 or world_db["MAP"][pos] == ord("|")):  # #
933                 strong_write(io_db["file_out"],  # #
934                              "LOG Can't build when standing on barrier.\n")  # #
935                 return
936             for id in [id for id in world_db["Things"]
937                        if not world_db["Things"][id] == t
938                        if not world_db["Things"][id]["carried"]
939                        if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
940                        if world_db["Things"][id]["T_POSX"] == t["T_POSX"]]:
941                  strong_write(io_db["file_out"],
942                               "LOG Can't build when standing objects.\n")  # #
943                  return
944             for id in t["T_CARRIES"]:  # #
945                 type_tool = world_db["Things"][id]["T_TYPE"]  # #
946                 if (world_db["ThingTypes"][type_tool]["TT_TOOL"]  # #
947                     == "carpentry"):  # #
948                     break  # #
949             wood_id = None  # #
950             for id in t["T_CARRIES"]:  # #
951                 type_material = world_db["Things"][id]["T_TYPE"]  # #
952                 if (world_db["ThingTypes"][type_material]["TT_TOOL"]  # #
953                     == "wood"):  # #
954                     wood_id = id  # #
955                     break  # #
956             if wood_id != None:  # #
957                 t["T_CARRIES"].remove(wood_id)  # #
958                 del world_db["Things"][wood_id]  # #
959                 world_db["MAP"][pos] = ord("|")  # #
960                 strong_write(io_db["file_out"], "LOG With your "  # #
961                              + world_db["ThingTypes"][type_tool]["TT_NAME"]  # #
962                              + " you build a wooden barrier from your "  # #
963                              + world_db["ThingTypes"][type_material]  # #
964                                ["TT_NAME"]  # #
965                              + ".\n")  # #
966             else:  # #
967                 strong_write(io_db["file_out"], "LOG You can't use a "  # #
968                              + world_db["ThingTypes"][type_tool]["TT_NAME"]  # #
969                              + " without some wood in your inventory.\n")  # #
970         elif world_db["ThingTypes"][type]["TT_TOOL"] == "food":
971             t["T_CARRIES"].remove(id)
972             del world_db["Things"][id]
973             t["T_SATIATION"] += world_db["ThingTypes"][type]["TT_TOOLPOWER"]
974             if t == world_db["Things"][0]:
975                 strong_write(io_db["file_out"],
976                              "LOG You consume this object.\n")
977         elif t == world_db["Things"][0]:
978             strong_write(io_db["file_out"],
979                          "LOG You try to use this object, but fail.\n")
980     elif t == world_db["Things"][0]:
981         strong_write(io_db["file_out"],
982                      "LOG You try to use an object, but you own none.\n")
983
984
985 def thingproliferation(t, prol_map):
986     """To chance of 1/TT_PROLIFERATE, create t offspring in open neighbor cell.
987
988     Naturally only works with TT_PROLIFERATE > 0. The neighbor cell must be be
989     marked "." in prol_map. If there are several map cell candidates, one is
990     selected randomly.
991     """
992     # 7DRL: success increments God's mood
993     # 7DRL: Things proliferate only on ":" ground.
994     prolscore = world_db["ThingTypes"][t["T_TYPE"]]["TT_PROLIFERATE"]
995     if prolscore and (1 == prolscore or 1 == (rand.next() % prolscore)):
996         candidates = []
997         for dir in [directions_db[key] for key in directions_db]:
998             mv_result = mv_yx_in_dir_legal(dir, t["T_POSY"], t["T_POSX"])
999             if mv_result[0] and ord(":") == prol_map[mv_result[1]  # #
1000             # if mv_result[0] and ord(".") == prol_map[mv_result[1]
1001                                                      * world_db["MAP_LENGTH"]
1002                                                      + mv_result[2]]:
1003                 candidates.append((mv_result[1], mv_result[2]))
1004         if len(candidates):
1005             i = rand.next() % len(candidates)
1006             id = id_setter(-1, "Things")
1007             newT = new_Thing(t["T_TYPE"], (candidates[i][0], candidates[i][1]))
1008             world_db["Things"][id] = newT
1009             world_db["GOD_MOOD"] += 1  # #
1010             if (world_db["FAVOR_STAGE"] > 0  # #
1011                 and t["T_TYPE"] == world_db["PLANT_0"]):  # #
1012                 world_db["GOD_FAVOR"] += 5  # #
1013             elif t["T_TYPE"] == world_db["PLANT_1"]:  # #
1014                 world_db["GOD_FAVOR"] += 25  # #
1015
1016
1017 def try_healing(t):
1018     """Grow t's HP to a 1/32 chance if < HP max, satiation > 0, and waiting.
1019
1020     On success, decrease satiation score by 32.
1021     """
1022     # 7DRL: Successful heals increment God's mood.
1023     if t["T_SATIATION"] > 0 \
1024        and t["T_LIFEPOINTS"] < \
1025            world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"] \
1026        and 0 == (rand.next() % 31) \
1027        and t["T_COMMAND"] == [id for id in world_db["ThingActions"]
1028                               if world_db["ThingActions"][id]["TA_NAME"] ==
1029                                  "wait"][0]:
1030         t["T_LIFEPOINTS"] += 1
1031         world_db["GOD_MOOD"] += 1  # #
1032         t["T_SATIATION"] -= 32
1033         if t == world_db["Things"][0]:
1034             strong_write(io_db["file_out"], "LOG You heal.\n")
1035
1036
1037 def hunger(t):
1038     """Decrement t's satiation,dependent on it trigger lifepoint dec chance."""
1039     if t["T_SATIATION"] > -32768:
1040         t["T_SATIATION"] -= 1
1041     testbase = t["T_SATIATION"] if t["T_SATIATION"] >= 0 else -t["T_SATIATION"]
1042     if not world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"]:
1043         raise RuntimeError("A thing that should not hunger is hungering.")
1044     stomach = int(32767 / world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"])
1045     if int(int(testbase / stomach) / ((rand.next() % stomach) + 1)):
1046         if t == world_db["Things"][0]:
1047             strong_write(io_db["file_out"], "LOG You suffer from hunger.\n")
1048         decrement_lifepoints(t)
1049
1050
1051 def get_dir_to_target(t, filter):
1052     """Try to set T_COMMAND/T_ARGUMENT for move to "filter"-determined target.
1053
1054     The path-wise nearest target is chosen, via the shortest available path.
1055     Target must not be t. On succcess, return positive value, else False.
1056     Filters:
1057     "a": Thing in FOV is below a certain distance, animate, but of ThingType
1058          that is not t's, and starts out weaker than t is; build path as
1059          avoiding things of t's ThingType
1060     "f": neighbor cell (not inhabited by any animate Thing) further away from
1061          animate Thing not further than x steps away and in FOV and of a
1062          ThingType that is not t's, and starts out stronger or as strong as t
1063          is currently; or (cornered), if no such flight cell, but Thing of
1064          above criteria is too near,1 a cell closer to it, or, if less near,
1065          just wait
1066     "c": Thing in memorized map is consumable
1067     "s": memory map cell with greatest-reachable degree of unexploredness
1068     """
1069
1070     def zero_score_map_where_char_on_memdepthmap(c):
1071         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
1072         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
1073         #           if t["T_MEMDEPTHMAP"][i] == mem_depth_c[0]]:
1074         #     set_map_score(i, 0)
1075         map = c_pointer_to_bytearray(t["T_MEMDEPTHMAP"])
1076         if libpr.zero_score_map_where_char_on_memdepthmap(c, map):
1077             raise RuntimeError("No score map allocated for "
1078                                "zero_score_map_where_char_on_memdepthmap().")
1079
1080     def set_map_score(pos, score):
1081         test = libpr.set_map_score(pos, score)
1082         if test:
1083             raise RuntimeError("No score map allocated for set_map_score().")
1084
1085     def get_map_score(pos):
1086         result = libpr.get_map_score(pos)
1087         if result < 0:
1088             raise RuntimeError("No score map allocated for get_map_score().")
1089         return result
1090
1091     def seeing_thing():
1092         if t["fovmap"] and ("a" == filter or "f" == filter):
1093             for id in world_db["Things"]:
1094                 Thing = world_db["Things"][id]
1095                 if Thing != t and Thing["T_LIFEPOINTS"] and \
1096                    t["T_TYPE"] != Thing["T_TYPE"] and \
1097                    'v' == chr(t["fovmap"][(Thing["T_POSY"]
1098                                           * world_db["MAP_LENGTH"])
1099                                           + Thing["T_POSX"]]):
1100                     ThingType = world_db["ThingTypes"][Thing["T_TYPE"]]
1101                     if ("f" == filter and ThingType["TT_LIFEPOINTS"] >=
1102                                           t["T_LIFEPOINTS"]) \
1103                        or ("a" == filter and ThingType["TT_LIFEPOINTS"] <
1104                                              t["T_LIFEPOINTS"]):
1105                         return True
1106         elif t["T_MEMMAP"] and "c" == filter:
1107             for mt in t["T_MEMTHING"]:
1108                 if ' ' != chr(t["T_MEMMAP"][(mt[1] * world_db["MAP_LENGTH"])
1109                                          + mt[2]]) \
1110                    and world_db["ThingTypes"][mt[0]]["TT_TOOL"] == "food":
1111                     return True
1112         return False
1113
1114     def set_cells_passable_on_memmap_to_65534_on_scoremap():
1115         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
1116         # ord_dot = ord(".")
1117         # memmap = t["T_MEMMAP"]
1118         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
1119         #            if ord_dot == memmap[i]]:
1120         #     set_map_score(i, 65534) # i.e. 65535-1
1121         map = c_pointer_to_bytearray(t["T_MEMMAP"])
1122         if libpr.set_cells_passable_on_memmap_to_65534_on_scoremap(map):
1123             raise RuntimeError("No score map allocated for "
1124                         "set_cells_passable_on_memmap_to_65534_on_scoremap().")
1125
1126     def init_score_map():
1127         test = libpr.init_score_map()
1128         if test:
1129             raise RuntimeError("Malloc error in init_score_map().")
1130         ord_v = ord("v")
1131         ord_blank = ord(" ")
1132         set_cells_passable_on_memmap_to_65534_on_scoremap()
1133         if "a" == filter:
1134             for id in world_db["Things"]:
1135                 Thing = world_db["Things"][id]
1136                 pos = Thing["T_POSY"] * world_db["MAP_LENGTH"] \
1137                       + Thing["T_POSX"]
1138                 if t != Thing and Thing["T_LIFEPOINTS"] and \
1139                    t["T_TYPE"] != Thing["T_TYPE"] and \
1140                    ord_v == t["fovmap"][pos] and \
1141                    t["T_LIFEPOINTS"] > \
1142                    world_db["ThingTypes"][Thing["T_TYPE"]]["TT_LIFEPOINTS"]:
1143                     set_map_score(pos, 0)
1144                 elif t["T_TYPE"] == Thing["T_TYPE"]:
1145                     set_map_score(pos, 65535)
1146         elif "f" == filter:
1147             for id in [id for id in world_db["Things"]
1148                        if world_db["Things"][id]["T_LIFEPOINTS"]]:
1149                 Thing = world_db["Things"][id]
1150                 pos = Thing["T_POSY"] * world_db["MAP_LENGTH"] \
1151                       + Thing["T_POSX"]
1152                 if t["T_TYPE"] != Thing["T_TYPE"] and \
1153                    ord_v == t["fovmap"][pos] and \
1154                    t["T_LIFEPOINTS"] <= \
1155                    world_db["ThingTypes"][Thing["T_TYPE"]]["TT_LIFEPOINTS"]:
1156                     set_map_score(pos, 0)
1157         elif "c" == filter:
1158             for mt in [mt for mt in t["T_MEMTHING"]
1159                        if ord_blank != t["T_MEMMAP"][mt[1]
1160                                                     * world_db["MAP_LENGTH"]
1161                                                     + mt[2]]
1162                        if world_db["ThingTypes"][mt[0]]["TT_TOOL"] == "food"]:
1163                 set_map_score(mt[1] * world_db["MAP_LENGTH"] + mt[2], 0)
1164         elif "s" == filter:
1165             zero_score_map_where_char_on_memdepthmap(mem_depth_c[0])
1166
1167     def rand_target_dir(neighbors, cmp, dirs):
1168         candidates = []
1169         n_candidates = 0
1170         for i in range(len(dirs)):
1171             if cmp == neighbors[i]:
1172                 candidates.append(dirs[i])
1173                 n_candidates += 1
1174         return candidates[rand.next() % n_candidates] if n_candidates else 0
1175
1176     def get_neighbor_scores(dirs, eye_pos):
1177         scores = []
1178         if libpr.ready_neighbor_scores(eye_pos):
1179             raise RuntimeError("No score map allocated for " +
1180                                "ready_neighbor_scores.()")
1181         for i in range(len(dirs)):
1182             scores.append(libpr.get_neighbor_score(i))
1183         return scores
1184
1185     def get_dir_from_neighbors():
1186         dir_to_target = False
1187         dirs = "edcxsw"
1188         eye_pos = t["T_POSY"] * world_db["MAP_LENGTH"] + t["T_POSX"]
1189         neighbors = get_neighbor_scores(dirs, eye_pos)
1190         if "f" == filter:
1191             inhabited = [world_db["Things"][id]["T_POSY"]
1192                          * world_db["MAP_LENGTH"]
1193                          + world_db["Things"][id]["T_POSX"]
1194                          for id in world_db["Things"]
1195                          if world_db["Things"][id]["T_LIFEPOINTS"]]
1196             for i in range(len(dirs)):
1197                 mv_yx_in_dir_legal(dirs[i], t["T_POSY"], t["T_POSX"])
1198                 pos_cmp = libpr.result_y() * world_db["MAP_LENGTH"] \
1199                           + libpr.result_x()
1200                 for pos in [pos for pos in inhabited if pos == pos_cmp]:
1201                     neighbors[i] = 65535
1202                     break
1203         minmax_start = 0 if "f" == filter else 65535 - 1
1204         minmax_neighbor = minmax_start
1205         for i in range(len(dirs)):
1206             if ("f" == filter and get_map_score(eye_pos) < neighbors[i] and
1207                 minmax_neighbor < neighbors[i] and 65535 != neighbors[i]) \
1208                or ("f" != filter and minmax_neighbor > neighbors[i]):
1209                 minmax_neighbor = neighbors[i]
1210         if minmax_neighbor != minmax_start:
1211             dir_to_target = rand_target_dir(neighbors, minmax_neighbor, dirs)
1212         if "f" == filter:
1213             if not dir_to_target:
1214                 if 1 == get_map_score(eye_pos):
1215                     dir_to_target = rand_target_dir(neighbors, 0, dirs)
1216                 elif 3 >= get_map_score(eye_pos):
1217                     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1218                                       if
1219                                       world_db["ThingActions"][id]["TA_NAME"]
1220                                          == "wait"][0]
1221                     return 1
1222             elif dir_to_target and 3 < get_map_score(eye_pos):
1223                 dir_to_target = 0
1224         elif "a" == filter and 10 <= get_map_score(eye_pos):
1225             dir_to_target = 0
1226         return dir_to_target
1227
1228     dir_to_target = False
1229     mem_depth_c = b' '
1230     run_i = 9 + 1 if "s" == filter else 1
1231     while run_i and not dir_to_target and ("s" == filter or seeing_thing()):
1232         run_i -= 1
1233         init_score_map()
1234         mem_depth_c = b'9' if b' ' == mem_depth_c \
1235                            else bytes([mem_depth_c[0] - 1])
1236         if libpr.dijkstra_map():
1237             raise RuntimeError("No score map allocated for dijkstra_map().")
1238         dir_to_target = get_dir_from_neighbors()
1239         libpr.free_score_map()
1240         if dir_to_target and str == type(dir_to_target):
1241             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1242                               if world_db["ThingActions"][id]["TA_NAME"]
1243                                  == "move"][0]
1244             t["T_ARGUMENT"] = ord(dir_to_target)
1245     return dir_to_target
1246
1247
1248 def standing_on_food(t):
1249     """Return True/False whether t is standing on a consumable."""
1250     for id in [id for id in world_db["Things"] if world_db["Things"][id] != t
1251                if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
1252                if world_db["Things"][id]["T_POSX"] == t["T_POSX"]
1253                if world_db["ThingTypes"][world_db["Things"][id]["T_TYPE"]]
1254                   ["TT_TOOL"] == "food"]:
1255         return True
1256     return False
1257
1258
1259 def get_inventory_slot_to_consume(t):
1260     """Return slot Id of strongest consumable in t's inventory, else -1."""
1261     cmp_food = 0
1262     selection = -1
1263     i = 0
1264     for id in t["T_CARRIES"]:
1265         type = world_db["Things"][id]["T_TYPE"]
1266         if world_db["ThingTypes"][type]["TT_TOOL"] == "food" \
1267            and world_db["ThingTypes"][type]["TT_TOOLPOWER"] > cmp_food:
1268             cmp_food = world_db["ThingTypes"][type]["TT_TOOLPOWER"]
1269             selection = i
1270         i += 1
1271     return selection
1272
1273
1274 def ai(t):
1275     """Determine next command/argment for actor t via AI algorithms.
1276
1277     AI will look for, and move towards, enemies (animate Things not of their
1278     own ThingType); if they see none, they will consume consumables in their
1279     inventory; if there are none, they will pick up what they stand on if they
1280     stand on consumables; if they stand on none, they will move towards the
1281     next consumable they see or remember on the map; if they see or remember
1282     none, they will explore parts of the map unseen since ever or for at least
1283     one turn; if there is nothing to explore, they will simply wait.
1284     """
1285     # 7DRL add: Don't pick up or search things when inventory is full.
1286     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1287                       if world_db["ThingActions"][id]["TA_NAME"] == "wait"][0]
1288     if not get_dir_to_target(t, "f"):
1289         sel = get_inventory_slot_to_consume(t)
1290         if -1 != sel:
1291             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1292                               if world_db["ThingActions"][id]["TA_NAME"]
1293                                  == "use"][0]
1294             t["T_ARGUMENT"] = sel
1295         elif standing_on_food(t) \
1296              and (len(t["T_CARRIES"]) < # #
1297                  world_db["ThingTypes"][t["T_TYPE"]]["TT_STORAGE"]): # #
1298             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1299                               if world_db["ThingActions"][id]["TA_NAME"]
1300                                  == "pick_up"][0]
1301         elif (not
1302               (len(t["T_CARRIES"]) < # #
1303                 world_db["ThingTypes"][t["T_TYPE"]]["TT_STORAGE"] # #
1304                and get_dir_to_target(t, "c"))) and \
1305              (not get_dir_to_target(t, "a")):
1306             get_dir_to_target(t, "s")
1307
1308
1309 def turn_over():
1310     """Run game world and its inhabitants until new player input expected."""
1311     id = 0
1312     whilebreaker = False
1313     while world_db["Things"][0]["T_LIFEPOINTS"]:
1314         proliferable_map = world_db["MAP"][:]
1315         for id in [id for id in world_db["Things"]
1316                    if not world_db["Things"][id]["carried"]]:
1317             y = world_db["Things"][id]["T_POSY"]
1318             x = world_db["Things"][id]["T_POSX"]
1319             proliferable_map[y * world_db["MAP_LENGTH"] + x] = ord("X")
1320         for id in [id for id in world_db["Things"]]:  # Only what's from start!
1321             if not id in world_db["Things"] or \
1322                world_db["Things"][id]["carried"]:   # May have been consumed or
1323                 continue                            # picked up during turn …
1324             Thing = world_db["Things"][id]
1325             if Thing["T_LIFEPOINTS"]:
1326                 if not Thing["T_COMMAND"]:
1327                     update_map_memory(Thing)
1328                     if 0 == id:
1329                         whilebreaker = True
1330                         break
1331                     ai(Thing)
1332                 try_healing(Thing)
1333                 hunger(Thing)
1334                 if Thing["T_LIFEPOINTS"]:
1335                     Thing["T_PROGRESS"] += 1
1336                     taid = [a for a in world_db["ThingActions"]
1337                               if a == Thing["T_COMMAND"]][0]
1338                     ThingAction = world_db["ThingActions"][taid]
1339                     if Thing["T_PROGRESS"] == ThingAction["TA_EFFORT"]:
1340                         eval("actor_" + ThingAction["TA_NAME"])(Thing)
1341                         Thing["T_COMMAND"] = 0
1342                         Thing["T_PROGRESS"] = 0
1343             thingproliferation(Thing, proliferable_map)
1344         if whilebreaker:
1345             break
1346         world_db["TURN"] += 1
1347
1348
1349 def new_Thing(type, pos=(0, 0)):
1350     """Return Thing of type T_TYPE, with fovmap if alive and world active."""
1351     thing = {
1352         "T_LIFEPOINTS": world_db["ThingTypes"][type]["TT_LIFEPOINTS"],
1353         "T_ARGUMENT": 0,
1354         "T_PROGRESS": 0,
1355         "T_SATIATION": 0,
1356         "T_COMMAND": 0,
1357         "T_PLAYERDROP": 0,  # #
1358         "T_TYPE": type,
1359         "T_POSY": pos[0],
1360         "T_POSX": pos[1],
1361         "T_CARRIES": [],
1362         "carried": False,
1363         "T_MEMTHING": [],
1364         "T_MEMMAP": False,
1365         "T_MEMDEPTHMAP": False,
1366         "fovmap": False
1367     }
1368     if world_db["WORLD_ACTIVE"] and thing["T_LIFEPOINTS"]:
1369         build_fov_map(thing)
1370     return thing
1371
1372
1373 def id_setter(id, category, id_store=False, start_at_1=False):
1374     """Set ID of object of category to manipulate ID unused? Create new one.
1375
1376     The ID is stored as id_store.id (if id_store is set). If the integer of the
1377     input is valid (if start_at_1, >= 0, else >= -1), but <0 or (if start_at_1)
1378     <1, calculate new ID: lowest unused ID >=0 or (if start_at_1) >= 1. None is
1379     always returned when no new object is created, otherwise the new object's
1380     ID.
1381     """
1382     min = 0 if start_at_1 else -1
1383     if str == type(id):
1384         id = integer_test(id, min)
1385     if None != id:
1386         if id in world_db[category]:
1387             if id_store:
1388                 id_store.id = id
1389             return None
1390         else:
1391             if (start_at_1 and 0 == id) \
1392                or ((not start_at_1) and (id < 0)):
1393                 id = 0 if start_at_1 else -1
1394                 while 1:
1395                     id = id + 1
1396                     if id not in world_db[category]:
1397                         break
1398             if id_store:
1399                 id_store.id = id
1400     return id
1401
1402
1403 def command_ping():
1404     """Send PONG line to server output file."""
1405     strong_write(io_db["file_out"], "PONG\n")
1406
1407
1408 def command_quit():
1409     """Abort server process."""
1410     if None == opts.replay:
1411         if world_db["WORLD_ACTIVE"]:
1412             save_world()
1413         atomic_write(io_db["path_record"], io_db["record_chunk"], do_append=True)
1414     raise SystemExit("received QUIT command")
1415
1416
1417 def command_thingshere(str_y, str_x):
1418     """Write to out file list of Things known to player at coordinate y, x."""
1419     if world_db["WORLD_ACTIVE"]:
1420         y = integer_test(str_y, 0, 255)
1421         x = integer_test(str_x, 0, 255)
1422         length = world_db["MAP_LENGTH"]
1423         if None != y and None != x and y < length and x < length:
1424             pos = (y * world_db["MAP_LENGTH"]) + x
1425             strong_write(io_db["file_out"], "THINGS_HERE START\n")
1426             if "v" == chr(world_db["Things"][0]["fovmap"][pos]):
1427                 for id in world_db["Things"]:
1428                     if y == world_db["Things"][id]["T_POSY"] \
1429                        and x == world_db["Things"][id]["T_POSX"] \
1430                        and not world_db["Things"][id]["carried"]:
1431                         type = world_db["Things"][id]["T_TYPE"]
1432                         name = world_db["ThingTypes"][type]["TT_NAME"]
1433                         strong_write(io_db["file_out"], name + "\n")
1434             else:
1435                 for mt in world_db["Things"][0]["T_MEMTHING"]:
1436                     if y == mt[1] and x == mt[2]:
1437                         name = world_db["ThingTypes"][mt[0]]["TT_NAME"]
1438                         strong_write(io_db["file_out"], name + "\n")
1439             strong_write(io_db["file_out"], "THINGS_HERE END\n")
1440         else:
1441             print("Ignoring: Invalid map coordinates.")
1442     else:
1443         print("Ignoring: Command only works on existing worlds.")
1444
1445
1446 def play_commander(action, args=False):
1447     """Setter for player's T_COMMAND and T_ARGUMENT, then calling turn_over().
1448
1449     T_ARGUMENT is set to direction char if action=="wait",or 8-bit int if args.
1450     """
1451
1452     def set_command():
1453         id = [x for x in world_db["ThingActions"]
1454                 if world_db["ThingActions"][x]["TA_NAME"] == action][0]
1455         world_db["Things"][0]["T_COMMAND"] = id
1456         turn_over()
1457
1458     def set_command_and_argument_int(str_arg):
1459         val = integer_test(str_arg, 0, 255)
1460         if None != val:
1461             world_db["Things"][0]["T_ARGUMENT"] = val
1462             set_command()
1463
1464     def set_command_and_argument_movestring(str_arg):
1465         if str_arg in directions_db:
1466             world_db["Things"][0]["T_ARGUMENT"] = ord(directions_db[str_arg])
1467             set_command()
1468         else:
1469             print("Ignoring: Argument must be valid direction string.")
1470
1471     if action == "move":
1472         return set_command_and_argument_movestring
1473     elif args:
1474         return set_command_and_argument_int
1475     else:
1476         return set_command
1477
1478
1479 def command_seedrandomness(seed_string):
1480     """Set rand seed to int(seed_string)."""
1481     val = integer_test(seed_string, 0, 4294967295)
1482     if None != val:
1483         rand.seed = val
1484
1485
1486 def command_makeworld(seed_string):
1487     """(Re-)build game world, i.e. map, things, to a new turn 1 from seed.
1488
1489     Seed rand with seed. Do more only with a "wait" ThingAction and
1490     world["PLAYER_TYPE"] matching ThingType of TT_START_NUMBER > 0. Then,
1491     world_db["Things"] emptied, call make_map() and set
1492     world_db["WORLD_ACTIVE"], world_db["TURN"] to 1. Build new Things
1493     according to ThingTypes' TT_START_NUMBERS, with Thing of ID 0 to ThingType
1494     of ID = world["PLAYER_TYPE"]. Place Things randomly, and actors not on each
1495     other. Init player's memory map. Write "NEW_WORLD" line to out file.
1496     Call log_help().
1497     """
1498
1499     # def free_pos(plant=False):
1500     def free_pos(plant=False):  # #
1501         i = 0
1502         while 1:
1503             err = "Space to put thing on too hard to find. Map too small?"
1504             while 1:
1505                 y = rand.next() % world_db["MAP_LENGTH"]
1506                 x = rand.next() % world_db["MAP_LENGTH"]
1507                 pos = y * world_db["MAP_LENGTH"] + x;
1508                 if (not plant  # #
1509                     and "." == chr(world_db["MAP"][pos])) \
1510                    or ":" == chr(world_db["MAP"][pos]):  # #
1511                     break
1512                 i += 1
1513                 if i == 65535:
1514                     raise SystemExit(err)
1515             # Replica of C code, wrongly ignores animatedness of new Thing.
1516             pos_clear = (0 == len([id for id in world_db["Things"]
1517                                    if world_db["Things"][id]["T_LIFEPOINTS"]
1518                                    if world_db["Things"][id]["T_POSY"] == y
1519                                    if world_db["Things"][id]["T_POSX"] == x]))
1520             if pos_clear:
1521                 break
1522         return (y, x)
1523
1524     val = integer_test(seed_string, 0, 4294967295)
1525     if None == val:
1526         return
1527     rand.seed = val
1528     player_will_be_generated = False
1529     playertype = world_db["PLAYER_TYPE"]
1530     for ThingType in world_db["ThingTypes"]:
1531         if playertype == ThingType:
1532             if 0 < world_db["ThingTypes"][ThingType]["TT_START_NUMBER"]:
1533                 player_will_be_generated = True
1534             break
1535     if not player_will_be_generated:
1536         print("Ignoring: No player type with start number >0 defined.")
1537         return
1538     wait_action = False
1539     for ThingAction in world_db["ThingActions"]:
1540         if "wait" == world_db["ThingActions"][ThingAction]["TA_NAME"]:
1541             wait_action = True
1542     if not wait_action:
1543         print("Ignoring: No thing action with name 'wait' defined.")
1544         return
1545     for name in specials:  # #
1546         if world_db[name] not in world_db["ThingTypes"]:  # #
1547             print("Ignoring: No valid " + name + " set.")  # #
1548             return  # #
1549     world_db["Things"] = {}
1550     make_map()
1551     world_db["WORLD_ACTIVE"] = 1
1552     world_db["TURN"] = 1
1553     for i in range(world_db["ThingTypes"][playertype]["TT_START_NUMBER"]):
1554         id = id_setter(-1, "Things")
1555         world_db["Things"][id] = new_Thing(playertype, free_pos())
1556     if not world_db["Things"][0]["fovmap"]:
1557         empty_fovmap = bytearray(b" " * world_db["MAP_LENGTH"] ** 2)
1558         world_db["Things"][0]["fovmap"] = empty_fovmap
1559     update_map_memory(world_db["Things"][0])
1560     for type in world_db["ThingTypes"]:
1561         for i in range(world_db["ThingTypes"][type]["TT_START_NUMBER"]):
1562             if type != playertype:
1563                 id = id_setter(-1, "Things")
1564                 plantness = world_db["ThingTypes"][type]["TT_PROLIFERATE"]  # #
1565                 world_db["Things"][id] = new_Thing(type, free_pos(plantness))
1566     strong_write(io_db["file_out"], "NEW_WORLD\n")
1567     log_help()
1568
1569
1570 def command_maplength(maplength_string):
1571     """Redefine map length. Invalidate map, therefore lose all things on it."""
1572     val = integer_test(maplength_string, 1, 256)
1573     if None != val:
1574         world_db["MAP_LENGTH"] = val
1575         world_db["MAP"] = False
1576         set_world_inactive()
1577         world_db["Things"] = {}
1578         libpr.set_maplength(val)
1579
1580
1581 def command_worldactive(worldactive_string):
1582     """Toggle world_db["WORLD_ACTIVE"] if possible.
1583
1584     An active world can always be set inactive. An inactive world can only be
1585     set active with a "wait" ThingAction, and a player Thing (of ID 0), and a
1586     map. On activation, rebuild all Things' FOVs, and the player's map memory.
1587     Also call log_help().
1588     """
1589     # 7DRL: altar must be on map, and specials must be set for active world.
1590     val = integer_test(worldactive_string, 0, 1)
1591     if None != val:
1592         if 0 != world_db["WORLD_ACTIVE"]:
1593             if 0 == val:
1594                 set_world_inactive()
1595             else:
1596                 print("World already active.")
1597         elif 0 == world_db["WORLD_ACTIVE"]:
1598             wait_exists = False
1599             for ThingAction in world_db["ThingActions"]:
1600                 if "wait" == world_db["ThingActions"][ThingAction]["TA_NAME"]:
1601                     wait_exists = True
1602                     break
1603             player_exists = False
1604             for Thing in world_db["Things"]:
1605                 if 0 == Thing:
1606                     player_exists = True
1607                     break
1608             specials_set = True  # #
1609             for name in specials:  # #
1610                 if world_db[name] not in world_db["ThingTypes"]:  # #
1611                     specials_set = False  # #
1612             altar_found = False  # #
1613             if world_db["MAP"]:  # #
1614                 pos = world_db["MAP"].find(b'_')  # #
1615                 if pos > 0:  # #
1616                     y = int(pos / world_db["MAP_LENGTH"])  # #
1617                     x = pos % world_db["MAP_LENGTH"]  # #
1618                     world_db["altar"] = (y, x)  # #
1619                     altar_found = True  # #
1620             if wait_exists and player_exists and world_db["MAP"] \
1621                and specials_set:  # #
1622                 for id in world_db["Things"]:
1623                     if world_db["Things"][id]["T_LIFEPOINTS"]:
1624                         build_fov_map(world_db["Things"][id])
1625                         if 0 == id:
1626                             update_map_memory(world_db["Things"][id], False)
1627                 if not world_db["Things"][0]["T_LIFEPOINTS"]:
1628                     empty_fovmap = bytearray(b" " * world_db["MAP_LENGTH"] ** 2)
1629                     world_db["Things"][0]["fovmap"] = empty_fovmap
1630                 world_db["WORLD_ACTIVE"] = 1
1631                 log_help()
1632             else:
1633                 print("Ignoring: Not all conditions for world activation met.")
1634
1635
1636 def specialtypesetter(name):  # #
1637     """Setter world_db[name], deactivating world if set int no ThingType."""
1638     def helper(str_int):
1639         val = integer_test(str_int, 0)
1640         if None != val:
1641             world_db[name] = val
1642             if world_db["WORLD_ACTIVE"] \
1643                and world_db[name] not in world_db["ThingTypes"]:
1644                 world_db["WORLD_ACTIVE"] = 0
1645                 print(name + " fits no known ThingType, deactivating world.")
1646     return helper
1647
1648
1649 def test_for_id_maker(object, category):
1650     """Return decorator testing for object having "id" attribute."""
1651     def decorator(f):
1652         def helper(*args):
1653             if hasattr(object, "id"):
1654                 f(*args)
1655             else:
1656                 print("Ignoring: No " + category +
1657                       " defined to manipulate yet.")
1658         return helper
1659     return decorator
1660
1661
1662 def command_tid(id_string):
1663     """Set ID of Thing to manipulate. ID unused? Create new one.
1664
1665     Default new Thing's type to the first available ThingType, others: zero.
1666     """
1667     id = id_setter(id_string, "Things", command_tid)
1668     if None != id:
1669         if world_db["ThingTypes"] == {}:
1670             print("Ignoring: No ThingType to settle new Thing in.")
1671             return
1672         type = list(world_db["ThingTypes"].keys())[0]
1673         world_db["Things"][id] = new_Thing(type)
1674
1675
1676 test_Thing_id = test_for_id_maker(command_tid, "Thing")
1677
1678
1679 @test_Thing_id
1680 def command_tcommand(str_int):
1681     """Set T_COMMAND of selected Thing."""
1682     val = integer_test(str_int, 0)
1683     if None != val:
1684         if 0 == val or val in world_db["ThingActions"]:
1685             world_db["Things"][command_tid.id]["T_COMMAND"] = val
1686         else:
1687             print("Ignoring: ThingAction ID belongs to no known ThingAction.")
1688
1689
1690 @test_Thing_id
1691 def command_ttype(str_int):
1692     """Set T_TYPE of selected Thing."""
1693     val = integer_test(str_int, 0)
1694     if None != val:
1695         if val in world_db["ThingTypes"]:
1696             world_db["Things"][command_tid.id]["T_TYPE"] = val
1697         else:
1698             print("Ignoring: ThingType ID belongs to no known ThingType.")
1699
1700
1701 @test_Thing_id
1702 def command_tcarries(str_int):
1703     """Append int(str_int) to T_CARRIES of selected Thing.
1704
1705     The ID int(str_int) must not be of the selected Thing, and must belong to a
1706     Thing with unset "carried" flag. Its "carried" flag will be set on owning.
1707     """
1708     val = integer_test(str_int, 0)
1709     if None != val:
1710         if val == command_tid.id:
1711             print("Ignoring: Thing cannot carry itself.")
1712         elif val in world_db["Things"] \
1713              and not world_db["Things"][val]["carried"]:
1714             world_db["Things"][command_tid.id]["T_CARRIES"].append(val)
1715             world_db["Things"][val]["carried"] = True
1716         else:
1717             print("Ignoring: Thing not available for carrying.")
1718     # Note that the whole carrying structure is different from the C version:
1719     # Carried-ness is marked by a "carried" flag, not by Things containing
1720     # Things internally.
1721
1722
1723 @test_Thing_id
1724 def command_tmemthing(str_t, str_y, str_x):
1725     """Add (int(str_t), int(str_y), int(str_x)) to selected Thing's T_MEMTHING.
1726
1727     The type must fit to an existing ThingType, and the position into the map.
1728     """
1729     type = integer_test(str_t, 0)
1730     posy = integer_test(str_y, 0, 255)
1731     posx = integer_test(str_x, 0, 255)
1732     if None != type and None != posy and None != posx:
1733         if type not in world_db["ThingTypes"] \
1734            or posy >= world_db["MAP_LENGTH"] or posx >= world_db["MAP_LENGTH"]:
1735             print("Ignoring: Illegal value for thing type or position.")
1736         else:
1737             memthing = (type, posy, posx)
1738             world_db["Things"][command_tid.id]["T_MEMTHING"].append(memthing)
1739
1740
1741 def setter_map(maptype):
1742     """Set (world or Thing's) map of maptype's int(str_int)-th line to mapline.
1743
1744     If no map of maptype exists yet, initialize it with ' ' bytes first.
1745     """
1746
1747     def valid_map_line(str_int, mapline):
1748         val = integer_test(str_int, 0, 255)
1749         if None != val:
1750             if val >= world_db["MAP_LENGTH"]:
1751                 print("Illegal value for map line number.")
1752             elif len(mapline) != world_db["MAP_LENGTH"]:
1753                 print("Map line length is unequal map width.")
1754             else:
1755                 return val
1756         return None
1757
1758     def nonThingMap_helper(str_int, mapline):
1759         val = valid_map_line(str_int, mapline)
1760         if None != val:
1761             length = world_db["MAP_LENGTH"]
1762             if not world_db["MAP"]:
1763                 map = bytearray(b' ' * (length ** 2))
1764             else:
1765                 map = world_db["MAP"]
1766             map[val * length:(val * length) + length] = mapline.encode()
1767             if not world_db["MAP"]:
1768                 world_db["MAP"] = map
1769
1770     @test_Thing_id
1771     def ThingMap_helper(str_int, mapline):
1772         val = valid_map_line(str_int, mapline)
1773         if None != val:
1774             length = world_db["MAP_LENGTH"]
1775             if not world_db["Things"][command_tid.id][maptype]:
1776                 map = bytearray(b' ' * (length ** 2))
1777             else:
1778                 map = world_db["Things"][command_tid.id][maptype]
1779             map[val * length:(val * length) + length] = mapline.encode()
1780             if not world_db["Things"][command_tid.id][maptype]:
1781                 world_db["Things"][command_tid.id][maptype] = map
1782
1783     return nonThingMap_helper if maptype == "MAP" else ThingMap_helper
1784
1785
1786 def setter_tpos(axis):
1787     """Generate setter for T_POSX or  T_POSY of selected Thing.
1788
1789     If world is active, rebuilds animate things' fovmap, player's memory map.
1790     """
1791     @test_Thing_id
1792     def helper(str_int):
1793         val = integer_test(str_int, 0, 255)
1794         if None != val:
1795             if val < world_db["MAP_LENGTH"]:
1796                 world_db["Things"][command_tid.id]["T_POS" + axis] = val
1797                 if world_db["WORLD_ACTIVE"] \
1798                    and world_db["Things"][command_tid.id]["T_LIFEPOINTS"]:
1799                     build_fov_map(world_db["Things"][command_tid.id])
1800                     if 0 == command_tid.id:
1801                         update_map_memory(world_db["Things"][command_tid.id])
1802             else:
1803                 print("Ignoring: Position is outside of map.")
1804     return helper
1805
1806
1807 def command_ttid(id_string):
1808     """Set ID of ThingType to manipulate. ID unused? Create new one.
1809
1810     Default new ThingType's TT_SYMBOL to "?", TT_CORPSE_ID to self, TT_TOOL to
1811     "", others: 0.
1812     """
1813     id = id_setter(id_string, "ThingTypes", command_ttid)
1814     if None != id:
1815         world_db["ThingTypes"][id] = {
1816             "TT_NAME": "(none)",
1817             "TT_TOOLPOWER": 0,
1818             "TT_LIFEPOINTS": 0,
1819             "TT_PROLIFERATE": 0,
1820             "TT_START_NUMBER": 0,
1821             "TT_STORAGE": 0, # #
1822             "TT_SYMBOL": "?",
1823             "TT_CORPSE_ID": id,
1824             "TT_TOOL": ""
1825         }
1826
1827
1828 test_ThingType_id = test_for_id_maker(command_ttid, "ThingType")
1829
1830
1831 @test_ThingType_id
1832 def command_ttname(name):
1833     """Set TT_NAME of selected ThingType."""
1834     world_db["ThingTypes"][command_ttid.id]["TT_NAME"] = name
1835
1836
1837 @test_ThingType_id
1838 def command_tttool(name):
1839     """Set TT_TOOL of selected ThingType."""
1840     world_db["ThingTypes"][command_ttid.id]["TT_TOOL"] = name
1841
1842
1843 @test_ThingType_id
1844 def command_ttsymbol(char):
1845     """Set TT_SYMBOL of selected ThingType. """
1846     if 1 == len(char):
1847         world_db["ThingTypes"][command_ttid.id]["TT_SYMBOL"] = char
1848     else:
1849         print("Ignoring: Argument must be single character.")
1850
1851
1852 @test_ThingType_id
1853 def command_ttcorpseid(str_int):
1854     """Set TT_CORPSE_ID of selected ThingType."""
1855     val = integer_test(str_int, 0)
1856     if None != val:
1857         if val in world_db["ThingTypes"]:
1858             world_db["ThingTypes"][command_ttid.id]["TT_CORPSE_ID"] = val
1859         else:
1860             print("Ignoring: Corpse ID belongs to no known ThignType.")
1861
1862
1863 def command_taid(id_string):
1864     """Set ID of ThingAction to manipulate. ID unused? Create new one.
1865
1866     Default new ThingAction's TA_EFFORT to 1, its TA_NAME to "wait".
1867     """
1868     id = id_setter(id_string, "ThingActions", command_taid, True)
1869     if None != id:
1870         world_db["ThingActions"][id] = {
1871             "TA_EFFORT": 1,
1872             "TA_NAME": "wait"
1873         }
1874
1875
1876 test_ThingAction_id = test_for_id_maker(command_taid, "ThingAction")
1877
1878
1879 @test_ThingAction_id
1880 def command_taname(name):
1881     """Set TA_NAME of selected ThingAction.
1882
1883     The name must match a valid thing action function. If after the name
1884     setting no ThingAction with name "wait" remains, call set_world_inactive().
1885     """
1886     if name == "wait" or name == "move" or name == "use" or name == "drop" \
1887        or name == "pick_up":
1888         world_db["ThingActions"][command_taid.id]["TA_NAME"] = name
1889         if 1 == world_db["WORLD_ACTIVE"]:
1890             wait_defined = False
1891             for id in world_db["ThingActions"]:
1892                 if "wait" == world_db["ThingActions"][id]["TA_NAME"]:
1893                     wait_defined = True
1894                     break
1895             if not wait_defined:
1896                 set_world_inactive()
1897     else:
1898         print("Ignoring: Invalid action name.")
1899     # In contrast to the original,naming won't map a function to a ThingAction.
1900
1901
1902 def command_ai():
1903     """Call ai() on player Thing, then turn_over()."""
1904     ai(world_db["Things"][0])
1905     turn_over()
1906
1907
1908 """Commands database.
1909
1910 Map command start tokens to ([0]) number of expected command arguments, ([1])
1911 the command's meta-ness (i.e. is it to be written to the record file, is it to
1912 be ignored in replay mode if read from server input file), and ([2]) a function
1913 to be called on it.
1914 """
1915 commands_db = {
1916     "QUIT": (0, True, command_quit),
1917     "PING": (0, True, command_ping),
1918     "THINGS_HERE": (2, True, command_thingshere),
1919     "MAKE_WORLD": (1, False, command_makeworld),
1920     "SEED_RANDOMNESS": (1, False, command_seedrandomness),
1921     "TURN": (1, False, setter(None, "TURN", 0, 65535)),
1922     "GOD_MOOD": (1, False, setter(None, "GOD_MOOD", -32768, 32767)),  # #
1923     "GOD_FAVOR": (1, False, setter(None, "GOD_FAVOR", -32768, 32767)),  # #
1924     "PLAYER_TYPE": (1, False, setter(None, "PLAYER_TYPE", 0)),
1925     "MAP_LENGTH": (1, False, command_maplength),
1926     "WORLD_ACTIVE": (1, False, command_worldactive),
1927     "MAP": (2, False, setter_map("MAP")),
1928     "FAVOR_STAGE": (1, False, setter(None, "FAVOR_STAGE", 0, 65535)),  # #
1929     "SLIPPERS": (1, False, specialtypesetter("SLIPPERS")),  # #
1930     "PLANT_0": (1, False, specialtypesetter("PLANT_0")),  # #
1931     "PLANT_1": (1, False, specialtypesetter("PLANT_1")),  # #
1932     "LUMBER": (1, False, specialtypesetter("LUMBER")),  # #
1933     "TOOL_0": (1, False, specialtypesetter("TOOL_0")),  # #
1934     "TA_ID": (1, False, command_taid),
1935     "TA_EFFORT": (1, False, setter("ThingAction", "TA_EFFORT", 0, 255)),
1936     "TA_NAME": (1, False, command_taname),
1937     "TT_ID": (1, False, command_ttid),
1938     "TT_NAME": (1, False, command_ttname),
1939     "TT_TOOL": (1, False, command_tttool),
1940     "TT_SYMBOL": (1, False, command_ttsymbol),
1941     "TT_CORPSE_ID": (1, False, command_ttcorpseid),
1942     "TT_TOOLPOWER": (1, False, setter("ThingType", "TT_TOOLPOWER", 0, 65535)),
1943     "TT_START_NUMBER": (1, False, setter("ThingType", "TT_START_NUMBER",
1944                                          0, 255)),
1945     "TT_PROLIFERATE": (1, False, setter("ThingType", "TT_PROLIFERATE",
1946                                         0, 65535)),
1947     "TT_LIFEPOINTS": (1, False, setter("ThingType", "TT_LIFEPOINTS", 0, 255)),
1948     "TT_STORAGE": (1, False, setter("ThingType", "TT_STORAGE", 0, 255)),  # #
1949     "T_ID": (1, False, command_tid),
1950     "T_ARGUMENT": (1, False, setter("Thing", "T_ARGUMENT", 0, 255)),
1951     "T_PROGRESS": (1, False, setter("Thing", "T_PROGRESS", 0, 255)),
1952     "T_LIFEPOINTS": (1, False, setter("Thing", "T_LIFEPOINTS", 0, 255)),
1953     "T_SATIATION": (1, False, setter("Thing", "T_SATIATION", -32768, 32767)),
1954     "T_COMMAND": (1, False, command_tcommand),
1955     "T_TYPE": (1, False, command_ttype),
1956     "T_CARRIES": (1, False, command_tcarries),
1957     "T_MEMMAP": (2, False, setter_map("T_MEMMAP")),
1958     "T_MEMDEPTHMAP": (2, False, setter_map("T_MEMDEPTHMAP")),
1959     "T_MEMTHING": (3, False, command_tmemthing),
1960     "T_POSY": (1, False, setter_tpos("Y")),
1961     "T_POSX": (1, False, setter_tpos("X")),
1962     "T_PLAYERDROP": (1, False, setter("Thing", "T_PLAYERDROP", 0, 1)),  # #
1963     "wait": (0, False, play_commander("wait")),
1964     "move": (1, False, play_commander("move")),
1965     "pick_up": (0, False, play_commander("pick_up")),
1966     "drop": (1, False, play_commander("drop", True)),
1967     "use": (1, False, play_commander("use", True)),
1968     "ai": (0, False, command_ai)
1969 }
1970 # TODO: Unhandled cases: (Un-)killing animates (esp. player!) with T_LIFEPOINTS.
1971
1972
1973 """World state database. With sane default values. (Randomness is in rand.)"""
1974 world_db = {
1975     "TURN": 0,
1976     "MAP_LENGTH": 64,
1977     "PLAYER_TYPE": 0,
1978     "WORLD_ACTIVE": 0,
1979     "GOD_MOOD": 0,  # #
1980     "GOD_FAVOR": 0,  # #
1981     "MAP": False,
1982     "FAVOR_STAGE": 0,  # #
1983     "SLIPPERS": 0,  # #
1984     "PLANT_0": 0,  # #
1985     "PLANT_1": 0,  # #
1986     "LUMBER": 0,  # #
1987     "TOOL_0": 0,  # #
1988     "ThingActions": {},
1989     "ThingTypes": {},
1990     "Things": {}
1991 }
1992
1993 # 7DRL-specific!
1994 """Special type settings."""
1995 specials = ["SLIPPERS", "PLANT_0", "PLANT_1", "LUMBER", "TOOL_0"]  # #
1996
1997 """Mapping of direction names to internal direction chars."""
1998 directions_db = {"east": "d", "south-east": "c", "south-west": "x",
1999                  "west": "s", "north-west": "w", "north-east": "e"}
2000
2001 """File IO database."""
2002 io_db = {
2003     "path_save": "save",
2004     "path_record": "record_save",
2005     "path_worldconf": "confserver/world",
2006     "path_server": "server/",
2007     "path_in": "server/in",
2008     "path_out": "server/out",
2009     "path_worldstate": "server/worldstate",
2010     "tmp_suffix": "_tmp",
2011     "kicked_by_rival": False,
2012     "worldstate_updateable": False
2013 }
2014
2015
2016 try:
2017     libpr = prep_library()
2018     rand = RandomnessIO()
2019     opts = parse_command_line_arguments()
2020     if opts.savefile:
2021         io_db["path_save"] = opts.savefile
2022         io_db["path_record"] = "record_" + opts.savefile
2023     setup_server_io()
2024     if opts.verbose:
2025         io_db["verbose"] = True
2026     if None != opts.replay:
2027         replay_game()
2028     else:
2029         play_game()
2030 except SystemExit as exit:
2031     print("ABORTING: " + exit.args[0])
2032 except:
2033     print("SOMETHING WENT WRONG IN UNEXPECTED WAYS")
2034     raise
2035 finally:
2036     cleanup_server_io()