home · contact · privacy
53cd75148ff46a43b01d4f7a1a0fa3e2fba34214
[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         if ord_space == t["T_MEMMAP"][pos]:
534             t["T_MEMMAP"][pos] = world_db["MAP"][pos]
535     if age_map:
536         age_some_memdepthmap_on_nonfov_cells()
537     t["T_MEMTHING"] = [mt for mt in t["T_MEMTHING"]
538                        if ord_v != t["fovmap"][(mt[1] * world_db["MAP_LENGTH"])
539                                                + mt[2]]]
540     for id in [id for id in world_db["Things"]
541                if not world_db["Things"][id]["carried"]]:
542         type = world_db["Things"][id]["T_TYPE"]
543         if not world_db["ThingTypes"][type]["TT_LIFEPOINTS"]:
544             y = world_db["Things"][id]["T_POSY"]
545             x = world_db["Things"][id]["T_POSX"]
546             if ord_v == t["fovmap"][(y * world_db["MAP_LENGTH"]) + x]:
547                 t["T_MEMTHING"].append((type, y, x))
548
549
550 def set_world_inactive():
551     """Set world_db["WORLD_ACTIVE"] to 0 and remove worldstate file."""
552     server_test()
553     if os.access(io_db["path_worldstate"], os.F_OK):
554         os.remove(io_db["path_worldstate"])
555     world_db["WORLD_ACTIVE"] = 0
556
557
558 def integer_test(val_string, min, max=None):
559     """Return val_string if possible integer >= min and <= max, else None."""
560     try:
561         val = int(val_string)
562         if val < min or (max is not None and val > max):
563             raise ValueError
564         return val
565     except ValueError:
566         msg = "Ignoring: Please use integer >= " + str(min)
567         if max is not None:
568             msg += " and <= " + str(max)
569         msg += "."
570         print(msg)
571         return None
572
573
574 def setter(category, key, min, max=None):
575     """Build setter for world_db([category + "s"][id])[key] to >=min/<=max."""
576     if category is None:
577         def f(val_string):
578             val = integer_test(val_string, min, max)
579             if None != val:
580                 world_db[key] = val
581     else:
582         if category == "Thing":
583             id_store = command_tid
584             decorator = test_Thing_id
585         elif category == "ThingType":
586             id_store = command_ttid
587             decorator = test_ThingType_id
588         elif category == "ThingAction":
589             id_store = command_taid
590             decorator = test_ThingAction_id
591
592         @decorator
593         def f(val_string):
594             val = integer_test(val_string, min, max)
595             if None != val:
596                 world_db[category + "s"][id_store.id][key] = val
597     return f
598
599
600 def build_fov_map(t):
601     """Build Thing's FOV map."""
602     t["fovmap"] = bytearray(b'v' * (world_db["MAP_LENGTH"] ** 2))
603     fovmap = c_pointer_to_bytearray(t["fovmap"])
604     map = c_pointer_to_bytearray(world_db["MAP"])
605     if libpr.build_fov_map(t["T_POSY"], t["T_POSX"], fovmap, map):
606         raise RuntimeError("Malloc error in build_fov_Map().")
607
608
609 def log_help():
610     """Send quick usage info to log."""
611     strong_write(io_db["file_out"], "LOG "
612                  + "Use 'w'/'e'/'s'/'d'/'x'/'c' to move, and 'w' to wait.\n")
613     strong_write(io_db["file_out"], "LOG "
614                  + "Use 'p' to pick up objects, and 'D' to drop them.\n")
615     strong_write(io_db["file_out"], "LOG "
616                  + "Some objects can be used (such as: eaten) by 'u' if "
617                  + "they are in your inventory. "
618                  + "Use 'UP'/'DOWN' to navigate the inventory.\n")
619     strong_write(io_db["file_out"], "LOG "
620                  + "Use 'l' to toggle 'look' mode (move an exploration cursor "
621                  + "instead of the player over the map).\n")
622     strong_write(io_db["file_out"], "LOG See README file for more details.\n")
623     strong_write(io_db["file_out"], "LOG \n")
624
625
626 def decrement_lifepoints(t):
627     """Decrement t's lifepoints by 1, and if to zero, corpse it.
628
629     If t is the player avatar, only blank its fovmap, so that the client may
630     still display memory data. On non-player things, erase fovmap and memory.
631     Dying actors drop all their things.
632     """
633     # 7DRL: Also decrements God's mood; deaths heavily so.
634     # 7DRL: Return 1 if death, else 0.
635     t["T_LIFEPOINTS"] -= 1
636     world_db["GOD_MOOD"] -= 1  # #
637     if 0 == t["T_LIFEPOINTS"]:
638         sadness = world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"]  # #
639         world_db["GOD_MOOD"] -= sadness  # #        
640         for id in t["T_CARRIES"]:
641             t["T_CARRIES"].remove(id)
642             world_db["Things"][id]["T_POSY"] = t["T_POSY"]
643             world_db["Things"][id]["T_POSX"] = t["T_POSX"]
644             world_db["Things"][id]["carried"] = False
645         t["T_TYPE"] = world_db["ThingTypes"][t["T_TYPE"]]["TT_CORPSE_ID"]
646         if world_db["Things"][0] == t:
647             t["fovmap"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
648             strong_write(io_db["file_out"], "LOG You die.\n")
649             strong_write(io_db["file_out"],
650                          "LOG See README on how to start over.\n")
651         else:
652             t["fovmap"] = False
653             t["T_MEMMAP"] = False
654             t["T_MEMDEPTHMAP"] = False
655             t["T_MEMTHING"] = []
656         return sadness  # #
657     return 0  # #
658
659
660 def add_gods_favor(i): # #
661     """"Add to GOD_FAVOR, multiplied with factor growing log. with GOD_MOOD."""
662     def favor_multiplier(i):
663         x = 100
664         threshold = math.e * x
665         mood = world_db["GOD_MOOD"]
666         if i > 0:
667             if mood > threshold:
668                 i = i * math.log(mood / x)
669             elif -mood > threshold:
670                 i = i / math.log(-mood / x)
671         elif i < 0:
672             if -mood > threshold:
673                 i = i * math.log(-mood / x)
674             if mood > threshold:
675                 i = i / math.log(mood / x)
676         return int(i)
677     world_db["GOD_FAVOR"] += favor_multiplier(i)
678
679
680 def mv_yx_in_dir_legal(dir, y, x):
681     """Wrapper around libpr.mv_yx_in_dir_legal to simplify its use."""
682     dir_c = dir.encode("ascii")[0]
683     test = libpr.mv_yx_in_dir_legal_wrap(dir_c, y, x)
684     if -1 == test:
685         raise RuntimeError("Too much wrapping in mv_yx_in_dir_legal_wrap()!")
686     return (test, libpr.result_y(), libpr.result_x())
687
688
689 def enter_altar():  # #
690      """What happens when the player enters the altar."""
691      if world_db["FAVOR_STAGE"] > 9000:
692         strong_write(io_db["file_out"],
693                      "LOG You step on a soul-less slab of stone.\n")
694         return
695      strong_write(io_db["file_out"], "LOG YOU ENTER SACRED GROUND.\n")
696      if world_db["FAVOR_STAGE"] == 0:
697         world_db["FAVOR_STAGE"] = 1
698         strong_write(io_db["file_out"], "LOG The Island God speaks to you: "
699                      + "\"I don't trust you. You intrude on the island's "
700                      + "affairs. I think you're a nuisance at best, and a "
701                      + "danger to my children at worst. I will give you a "
702                      + "chance to lighten my mood, however: For a while now, "
703                      + "I've been trying to spread the plant "
704                      + world_db["ThingTypes"][world_db["PLANT_0"]]["TT_NAME"]
705                      + " (\""
706                      + world_db["ThingTypes"][world_db["PLANT_0"]]["TT_SYMBOL"]
707                      + "\"). I have not been very successful so far. Maybe "
708                      + "you can make yourself useful there. I will count "
709                      + "each further "
710                      + world_db["ThingTypes"][world_db["PLANT_0"]]["TT_NAME"]
711                      + " that grows to your favor.\n")
712      elif world_db["GOD_FAVOR"] > 9000:
713          world_db["FAVOR_STAGE"] = 9001
714          strong_write(io_db["file_out"], "LOG The Island God speaks to you: "
715                       + "\"You have proven yourself worthy of my respect. "
716                       + "You were a good citizen to the island, and sometimes "
717                       + "a better steward to its inhabitants than me. The "
718                       + "island shall miss you when you leave. But you have "
719                       + "earned the right to do so. Take this "
720                       + world_db["ThingTypes"][world_db["SLIPPERS"]]["TT_NAME"]
721                       + " and USE it when you please. It will take you to "
722                       + "where you came from. (But do feel free to stay here "
723                       + "as long as you like.)\"\n")
724          id = id_setter(-1, "Things")
725          world_db["Things"][id] = new_Thing(world_db["SLIPPERS"],
726                                             world_db["altar"])
727
728
729 def actor_wait(t):
730     """Make t do nothing (but loudly, if player avatar)."""
731     if t == world_db["Things"][0]:
732         strong_write(io_db["file_out"], "LOG You wait.\n")
733
734
735 def actor_move(t):
736     """If passable, move/collide(=attack) thing into T_ARGUMENT's direction."""
737     # 7DRL: Player wounding (worse: killing) others will lower God's favor.
738     # 7DRL: Player entering the altar triggers enter_altar().
739     passable = False
740     move_result = mv_yx_in_dir_legal(chr(t["T_ARGUMENT"]),
741                                      t["T_POSY"], t["T_POSX"])
742     if 1 == move_result[0]:
743         pos = (move_result[1] * world_db["MAP_LENGTH"]) + move_result[2]
744         hitted = [id for id in world_db["Things"]
745                   if world_db["Things"][id] != t
746                   if world_db["Things"][id]["T_LIFEPOINTS"]
747                   if world_db["Things"][id]["T_POSY"] == move_result[1]
748                   if world_db["Things"][id]["T_POSX"] == move_result[2]]
749         if len(hitted):
750             hit_id = hitted[0]
751             if t == world_db["Things"][0]:
752                 hitted_type = world_db["Things"][hit_id]["T_TYPE"]
753                 hitted_name = world_db["ThingTypes"][hitted_type]["TT_NAME"]
754                 strong_write(io_db["file_out"], "LOG You wound " + hitted_name
755                                                 + ".\n")
756                 add_gods_favor(-1)  # #
757             elif 0 == hit_id:
758                 hitter_name = world_db["ThingTypes"][t["T_TYPE"]]["TT_NAME"]
759                 strong_write(io_db["file_out"], "LOG " + hitter_name +
760                                                 " wounds you.\n")
761             test = decrement_lifepoints(world_db["Things"][hit_id])  # #(test=)
762             if test and t == world_db["Things"][0]:  # #
763                 add_gods_favor(-test)  # #
764             return
765         passable = ("." == chr(world_db["MAP"][pos]) or
766                     ":" == chr(world_db["MAP"][pos]) or # #
767                     "_" == chr(world_db["MAP"][pos])) # #
768     dir = [dir for dir in directions_db
769            if directions_db[dir] == chr(t["T_ARGUMENT"])][0]
770     if passable:
771         t["T_POSY"] = move_result[1]
772         t["T_POSX"] = move_result[2]
773         for id in t["T_CARRIES"]:
774             world_db["Things"][id]["T_POSY"] = move_result[1]
775             world_db["Things"][id]["T_POSX"] = move_result[2]
776         build_fov_map(t)
777         if t == world_db["Things"][0]:
778             strong_write(io_db["file_out"], "LOG You move " + dir + ".\n")
779             if (move_result[1] == world_db["altar"][0] and  # #
780                 move_result[2] == world_db["altar"][1]):  # #
781                 enter_altar()  # #
782     elif t == world_db["Things"][0]:
783         strong_write(io_db["file_out"], "LOG You fail to move " + dir + ".\n")
784
785
786 def actor_pick_up(t):
787     """Make t pick up (topmost?) Thing from ground into inventory."""
788     # Topmostness is actually not defined so far. Picks most nutritious Thing.
789     # 7DRL: Non-player picking up player-dropped consumable -> GOD_FAVOR gain.
790     used_slots = len(t["T_CARRIES"]) # #
791     if used_slots < world_db["ThingTypes"][t["T_TYPE"]]["TT_STORAGE"]: # #
792         ids = [id for id in world_db["Things"] if world_db["Things"][id] != t
793                if not world_db["Things"][id]["carried"]
794                if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
795                if world_db["Things"][id]["T_POSX"] == t["T_POSX"]]
796         if len(ids):
797             highest_id = ids[0]
798             nutritious = 0
799             for id in ids:
800                 type = world_db["Things"][id]["T_TYPE"]
801                 if world_db["ThingTypes"][type]["TT_TOOL"] == "food" \
802                 and world_db["ThingTypes"][type]["TT_TOOLPOWER"] > nutritious:
803                     nutritious = world_db["ThingTypes"][type]["TT_TOOLPOWER"]
804                     highest_id = id
805             world_db["Things"][highest_id]["carried"] = True
806             type = world_db["Things"][highest_id]["T_TYPE"]  # #
807             if (t != world_db["Things"][0] # #
808                 and world_db["Things"][highest_id]["T_PLAYERDROP"]  # #
809                 and world_db["ThingTypes"][type]["TT_TOOL"] == "food"):  # #
810                 score = world_db["ThingTypes"][type]["TT_TOOLPOWER"] / 32  # #
811                 add_gods_favor(score)  # #
812                 world_db["Things"][highest_id]["T_PLAYERDROP"] = 0  # #
813             t["T_CARRIES"].append(highest_id)
814             if t == world_db["Things"][0]:
815                 strong_write(io_db["file_out"], "LOG You pick up an object.\n")
816         elif t == world_db["Things"][0]:
817             err = "You try to pick up an object, but there is none."
818             strong_write(io_db["file_out"], "LOG " + err + "\n")
819     elif t == world_db["Things"][0]: # #
820         strong_write(io_db["file_out"], "LOG Can't pick up object: " + # #
821                                         "No storage room to carry more.\n") # #
822
823
824 def actor_drop(t):
825     """Make t rop Thing from inventory to ground indexed by T_ARGUMENT."""
826     # TODO: Handle case where T_ARGUMENT matches nothing.
827     if len(t["T_CARRIES"]):
828         id = t["T_CARRIES"][t["T_ARGUMENT"]]
829         t["T_CARRIES"].remove(id)
830         world_db["Things"][id]["carried"] = False
831         if t == world_db["Things"][0]:
832             strong_write(io_db["file_out"], "LOG You drop an object.\n")
833             world_db["Things"][id]["T_PLAYERDROP"] = 1  # #
834     elif t == world_db["Things"][0]:
835         err = "You try to drop an object, but you own none."
836         strong_write(io_db["file_out"], "LOG " + err + "\n")
837
838
839 def actor_use(t):
840     """Make t use (for now: consume) T_ARGUMENT-indexed Thing in inventory."""
841     # TODO: Handle case where T_ARGUMENT matches nothing.
842     # 7DLR: Handle SLIPPERS-type Thing use.
843     if len(t["T_CARRIES"]):
844         id = t["T_CARRIES"][t["T_ARGUMENT"]]
845         type = world_db["Things"][id]["T_TYPE"]
846         if type == world_db["SLIPPERS"]:  # #
847             if t == world_db["Things"][0]:  # #
848                 strong_write(io_db["file_out"], "LOG You use the "  # #
849                              + world_db["ThingTypes"][type]["TT_NAME"]  # #
850                              + ". It glows in wondrous colors, and emits "  # #
851                              + "a sound as if from a dying cat. The "  # #
852                              + "Island God laughs.\n")  # #
853             t["T_LIFEPOINTS"] = 1  # #
854             decrement_lifepoints(t)  # #
855         elif world_db["ThingTypes"][type]["TT_TOOL"] == "food":
856             t["T_CARRIES"].remove(id)
857             del world_db["Things"][id]
858             t["T_SATIATION"] += world_db["ThingTypes"][type]["TT_TOOLPOWER"]
859             if t == world_db["Things"][0]:
860                 strong_write(io_db["file_out"],
861                              "LOG You consume this object.\n")
862         elif t == world_db["Things"][0]:
863             strong_write(io_db["file_out"],
864                          "LOG You try to use this object, but fail.\n")
865     elif t == world_db["Things"][0]:
866         strong_write(io_db["file_out"],
867                      "LOG You try to use an object, but you own none.\n")
868
869
870 def thingproliferation(t, prol_map):
871     """To chance of 1/TT_PROLIFERATE,create  t offspring in open neighbor cell.
872
873     Naturally only works with TT_PROLIFERATE > 0. The neighbor cell must be be
874     marked "." in prol_map. If there are several map cell candidates, one is
875     selected randomly.
876     """
877     # 7DRL: success increments God's mood
878     # 7DRL: Things proliferate only on ":" ground.
879     prolscore = world_db["ThingTypes"][t["T_TYPE"]]["TT_PROLIFERATE"]
880     if prolscore and (1 == prolscore or 1 == (rand.next() % prolscore)):
881         candidates = []
882         for dir in [directions_db[key] for key in directions_db]:
883             mv_result = mv_yx_in_dir_legal(dir, t["T_POSY"], t["T_POSX"])
884             if mv_result[0] and ord(":") == prol_map[mv_result[1]  # #
885             # if mv_result[0] and ord(".") == prol_map[mv_result[1]
886                                                      * world_db["MAP_LENGTH"]
887                                                      + mv_result[2]]:
888                 candidates.append((mv_result[1], mv_result[2]))
889         if len(candidates):
890             i = rand.next() % len(candidates)
891             id = id_setter(-1, "Things")
892             newT = new_Thing(t["T_TYPE"], (candidates[i][0], candidates[i][1]))
893             world_db["Things"][id] = newT
894             world_db["GOD_MOOD"] += 1  # #
895             if (world_db["FAVOR_STAGE"] > 0  # #
896                 and t["T_TYPE"] == world_db["PLANT_0"]):
897                 world_db["GOD_FAVOR"] += 5
898
899
900 def try_healing(t):
901     """Grow t's HP to a 1/32 chance if < HP max, satiation > 0, and waiting.
902
903     On success, decrease satiation score by 32.
904     """
905     # 7DRL: Successful heals increment God's mood.
906     if t["T_SATIATION"] > 0 \
907        and t["T_LIFEPOINTS"] < \
908            world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"] \
909        and 0 == (rand.next() % 31) \
910        and t["T_COMMAND"] == [id for id in world_db["ThingActions"]
911                               if world_db["ThingActions"][id]["TA_NAME"] ==
912                                  "wait"][0]:
913         t["T_LIFEPOINTS"] += 1
914         world_db["GOD_MOOD"] += 1  # #
915         t["T_SATIATION"] -= 32
916         if t == world_db["Things"][0]:
917             strong_write(io_db["file_out"], "LOG You heal.\n")
918
919
920 def hunger(t):
921     """Decrement t's satiation,dependent on it trigger lifepoint dec chance."""
922     if t["T_SATIATION"] > -32768:
923         t["T_SATIATION"] -= 1
924     testbase = t["T_SATIATION"] if t["T_SATIATION"] >= 0 else -t["T_SATIATION"]
925     if not world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"]:
926         raise RuntimeError("A thing that should not hunger is hungering.")
927     stomach = int(32767 / world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"])
928     if int(int(testbase / stomach) / ((rand.next() % stomach) + 1)):
929         if t == world_db["Things"][0]:
930             strong_write(io_db["file_out"], "LOG You suffer from hunger.\n")
931         decrement_lifepoints(t)
932
933
934 def get_dir_to_target(t, filter):
935     """Try to set T_COMMAND/T_ARGUMENT for move to "filter"-determined target.
936
937     The path-wise nearest target is chosen, via the shortest available path.
938     Target must not be t. On succcess, return positive value, else False.
939     Filters:
940     "a": Thing in FOV is below a certain distance, animate, but of ThingType
941          that is not t's, and starts out weaker than t is; build path as
942          avoiding things of t's ThingType
943     "f": neighbor cell (not inhabited by any animate Thing) further away from
944          animate Thing not further than x steps away and in FOV and of a
945          ThingType that is not t's, and starts out stronger or as strong as t
946          is currently; or (cornered), if no such flight cell, but Thing of
947          above criteria is too near,1 a cell closer to it, or, if less near,
948          just wait
949     "c": Thing in memorized map is consumable
950     "s": memory map cell with greatest-reachable degree of unexploredness
951     """
952
953     def zero_score_map_where_char_on_memdepthmap(c):
954         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
955         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
956         #           if t["T_MEMDEPTHMAP"][i] == mem_depth_c[0]]:
957         #     set_map_score(i, 0)
958         map = c_pointer_to_bytearray(t["T_MEMDEPTHMAP"])
959         if libpr.zero_score_map_where_char_on_memdepthmap(c, map):
960             raise RuntimeError("No score map allocated for "
961                                "zero_score_map_where_char_on_memdepthmap().")
962
963     def set_map_score(pos, score):
964         test = libpr.set_map_score(pos, score)
965         if test:
966             raise RuntimeError("No score map allocated for set_map_score().")
967
968     def get_map_score(pos):
969         result = libpr.get_map_score(pos)
970         if result < 0:
971             raise RuntimeError("No score map allocated for get_map_score().")
972         return result
973
974     def seeing_thing():
975         if t["fovmap"] and ("a" == filter or "f" == filter):
976             for id in world_db["Things"]:
977                 Thing = world_db["Things"][id]
978                 if Thing != t and Thing["T_LIFEPOINTS"] and \
979                    t["T_TYPE"] != Thing["T_TYPE"] and \
980                    'v' == chr(t["fovmap"][(Thing["T_POSY"]
981                                           * world_db["MAP_LENGTH"])
982                                           + Thing["T_POSX"]]):
983                     ThingType = world_db["ThingTypes"][Thing["T_TYPE"]]
984                     if ("f" == filter and ThingType["TT_LIFEPOINTS"] >=
985                                           t["T_LIFEPOINTS"]) \
986                        or ("a" == filter and ThingType["TT_LIFEPOINTS"] <
987                                              t["T_LIFEPOINTS"]):
988                         return True
989         elif t["T_MEMMAP"] and "c" == filter:
990             for mt in t["T_MEMTHING"]:
991                 if ' ' != chr(t["T_MEMMAP"][(mt[1] * world_db["MAP_LENGTH"])
992                                          + mt[2]]) \
993                    and world_db["ThingTypes"][mt[0]]["TT_TOOL"] == "food":
994                     return True
995         return False
996
997     def set_cells_passable_on_memmap_to_65534_on_scoremap():
998         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
999         # ord_dot = ord(".")
1000         # memmap = t["T_MEMMAP"]
1001         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
1002         #            if ord_dot == memmap[i]]:
1003         #     set_map_score(i, 65534) # i.e. 65535-1
1004         map = c_pointer_to_bytearray(t["T_MEMMAP"])
1005         if libpr.set_cells_passable_on_memmap_to_65534_on_scoremap(map):
1006             raise RuntimeError("No score map allocated for "
1007                         "set_cells_passable_on_memmap_to_65534_on_scoremap().")
1008
1009     def init_score_map():
1010         test = libpr.init_score_map()
1011         if test:
1012             raise RuntimeError("Malloc error in init_score_map().")
1013         ord_v = ord("v")
1014         ord_blank = ord(" ")
1015         set_cells_passable_on_memmap_to_65534_on_scoremap()
1016         if "a" == filter:
1017             for id in world_db["Things"]:
1018                 Thing = world_db["Things"][id]
1019                 pos = Thing["T_POSY"] * world_db["MAP_LENGTH"] \
1020                       + Thing["T_POSX"]
1021                 if t != Thing and Thing["T_LIFEPOINTS"] and \
1022                    t["T_TYPE"] != Thing["T_TYPE"] and \
1023                    ord_v == t["fovmap"][pos] and \
1024                    t["T_LIFEPOINTS"] > \
1025                    world_db["ThingTypes"][Thing["T_TYPE"]]["TT_LIFEPOINTS"]:
1026                     set_map_score(pos, 0)
1027                 elif t["T_TYPE"] == Thing["T_TYPE"]:
1028                     set_map_score(pos, 65535)
1029         elif "f" == filter:
1030             for id in [id for id in world_db["Things"]
1031                        if world_db["Things"][id]["T_LIFEPOINTS"]]:
1032                 Thing = world_db["Things"][id]
1033                 pos = Thing["T_POSY"] * world_db["MAP_LENGTH"] \
1034                       + Thing["T_POSX"]
1035                 if t["T_TYPE"] != Thing["T_TYPE"] and \
1036                    ord_v == t["fovmap"][pos] and \
1037                    t["T_LIFEPOINTS"] <= \
1038                    world_db["ThingTypes"][Thing["T_TYPE"]]["TT_LIFEPOINTS"]:
1039                     set_map_score(pos, 0)
1040         elif "c" == filter:
1041             for mt in [mt for mt in t["T_MEMTHING"]
1042                        if ord_blank != t["T_MEMMAP"][mt[1]
1043                                                     * world_db["MAP_LENGTH"]
1044                                                     + mt[2]]
1045                        if world_db["ThingTypes"][mt[0]]["TT_TOOL"] == "food"]:
1046                 set_map_score(mt[1] * world_db["MAP_LENGTH"] + mt[2], 0)
1047         elif "s" == filter:
1048             zero_score_map_where_char_on_memdepthmap(mem_depth_c[0])
1049
1050     def rand_target_dir(neighbors, cmp, dirs):
1051         candidates = []
1052         n_candidates = 0
1053         for i in range(len(dirs)):
1054             if cmp == neighbors[i]:
1055                 candidates.append(dirs[i])
1056                 n_candidates += 1
1057         return candidates[rand.next() % n_candidates] if n_candidates else 0
1058
1059     def get_neighbor_scores(dirs, eye_pos):
1060         scores = []
1061         if libpr.ready_neighbor_scores(eye_pos):
1062             raise RuntimeError("No score map allocated for " +
1063                                "ready_neighbor_scores.()")
1064         for i in range(len(dirs)):
1065             scores.append(libpr.get_neighbor_score(i))
1066         return scores
1067
1068     def get_dir_from_neighbors():
1069         dir_to_target = False
1070         dirs = "edcxsw"
1071         eye_pos = t["T_POSY"] * world_db["MAP_LENGTH"] + t["T_POSX"]
1072         neighbors = get_neighbor_scores(dirs, eye_pos)
1073         if "f" == filter:
1074             inhabited = [world_db["Things"][id]["T_POSY"]
1075                          * world_db["MAP_LENGTH"]
1076                          + world_db["Things"][id]["T_POSX"]
1077                          for id in world_db["Things"]
1078                          if world_db["Things"][id]["T_LIFEPOINTS"]]
1079             for i in range(len(dirs)):
1080                 mv_yx_in_dir_legal(dirs[i], t["T_POSY"], t["T_POSX"])
1081                 pos_cmp = libpr.result_y() * world_db["MAP_LENGTH"] \
1082                           + libpr.result_x()
1083                 for pos in [pos for pos in inhabited if pos == pos_cmp]:
1084                     neighbors[i] = 65535
1085                     break
1086         minmax_start = 0 if "f" == filter else 65535 - 1
1087         minmax_neighbor = minmax_start
1088         for i in range(len(dirs)):
1089             if ("f" == filter and get_map_score(eye_pos) < neighbors[i] and
1090                 minmax_neighbor < neighbors[i] and 65535 != neighbors[i]) \
1091                or ("f" != filter and minmax_neighbor > neighbors[i]):
1092                 minmax_neighbor = neighbors[i]
1093         if minmax_neighbor != minmax_start:
1094             dir_to_target = rand_target_dir(neighbors, minmax_neighbor, dirs)
1095         if "f" == filter:
1096             if not dir_to_target:
1097                 if 1 == get_map_score(eye_pos):
1098                     dir_to_target = rand_target_dir(neighbors, 0, dirs)
1099                 elif 3 >= get_map_score(eye_pos):
1100                     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1101                                       if
1102                                       world_db["ThingActions"][id]["TA_NAME"]
1103                                          == "wait"][0]
1104                     return 1
1105             elif dir_to_target and 3 < get_map_score(eye_pos):
1106                 dir_to_target = 0
1107         elif "a" == filter and 10 <= get_map_score(eye_pos):
1108             dir_to_target = 0
1109         return dir_to_target
1110
1111     dir_to_target = False
1112     mem_depth_c = b' '
1113     run_i = 9 + 1 if "s" == filter else 1
1114     while run_i and not dir_to_target and ("s" == filter or seeing_thing()):
1115         run_i -= 1
1116         init_score_map()
1117         mem_depth_c = b'9' if b' ' == mem_depth_c \
1118                            else bytes([mem_depth_c[0] - 1])
1119         if libpr.dijkstra_map():
1120             raise RuntimeError("No score map allocated for dijkstra_map().")
1121         dir_to_target = get_dir_from_neighbors()
1122         libpr.free_score_map()
1123         if dir_to_target and str == type(dir_to_target):
1124             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1125                               if world_db["ThingActions"][id]["TA_NAME"]
1126                                  == "move"][0]
1127             t["T_ARGUMENT"] = ord(dir_to_target)
1128     return dir_to_target
1129
1130
1131 def standing_on_food(t):
1132     """Return True/False whether t is standing on a consumable."""
1133     for id in [id for id in world_db["Things"] if world_db["Things"][id] != t
1134                if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
1135                if world_db["Things"][id]["T_POSX"] == t["T_POSX"]
1136                if world_db["ThingTypes"][world_db["Things"][id]["T_TYPE"]]
1137                   ["TT_TOOL"] == "food"]:
1138         return True
1139     return False
1140
1141
1142 def get_inventory_slot_to_consume(t):
1143     """Return slot Id of strongest consumable in t's inventory, else -1."""
1144     cmp_food = 0
1145     selection = -1
1146     i = 0
1147     for id in t["T_CARRIES"]:
1148         type = world_db["Things"][id]["T_TYPE"]
1149         if world_db["ThingTypes"][type]["TT_TOOL"] == "food" \
1150            and world_db["ThingTypes"][type]["TT_TOOLPOWER"] > cmp_food:
1151             cmp_food = world_db["ThingTypes"][type]["TT_TOOLPOWER"]
1152             selection = i
1153         i += 1
1154     return selection
1155
1156
1157 def ai(t):
1158     """Determine next command/argment for actor t via AI algorithms.
1159
1160     AI will look for, and move towards, enemies (animate Things not of their
1161     own ThingType); if they see none, they will consume consumables in their
1162     inventory; if there are none, they will pick up what they stand on if they
1163     stand on consumables; if they stand on none, they will move towards the
1164     next consumable they see or remember on the map; if they see or remember
1165     none, they will explore parts of the map unseen since ever or for at least
1166     one turn; if there is nothing to explore, they will simply wait.
1167     """
1168     # 7DRL add: Don't pick up or search things when inventory is full.
1169     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1170                       if world_db["ThingActions"][id]["TA_NAME"] == "wait"][0]
1171     if not get_dir_to_target(t, "f"):
1172         sel = get_inventory_slot_to_consume(t)
1173         if -1 != sel:
1174             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1175                               if world_db["ThingActions"][id]["TA_NAME"]
1176                                  == "use"][0]
1177             t["T_ARGUMENT"] = sel
1178         elif standing_on_food(t) \
1179              and (len(t["T_CARRIES"]) < # #
1180                  world_db["ThingTypes"][t["T_TYPE"]]["TT_STORAGE"]): # #
1181             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1182                               if world_db["ThingActions"][id]["TA_NAME"]
1183                                  == "pick_up"][0]
1184         elif (not
1185               (len(t["T_CARRIES"]) < # #
1186                 world_db["ThingTypes"][t["T_TYPE"]]["TT_STORAGE"] # #
1187                and get_dir_to_target(t, "c"))) and \
1188              (not get_dir_to_target(t, "a")):
1189             get_dir_to_target(t, "s")
1190
1191
1192 def turn_over():
1193     """Run game world and its inhabitants until new player input expected."""
1194     id = 0
1195     whilebreaker = False
1196     while world_db["Things"][0]["T_LIFEPOINTS"]:
1197         proliferable_map = world_db["MAP"][:]
1198         for id in [id for id in world_db["Things"]
1199                    if not world_db["Things"][id]["carried"]]:
1200             y = world_db["Things"][id]["T_POSY"]
1201             x = world_db["Things"][id]["T_POSX"]
1202             proliferable_map[y * world_db["MAP_LENGTH"] + x] = ord('X')
1203         for id in [id for id in world_db["Things"]]:  # Only what's from start!
1204             if not id in world_db["Things"] or \
1205                world_db["Things"][id]["carried"]:   # May have been consumed or
1206                 continue                            # picked up during turn …
1207             Thing = world_db["Things"][id]
1208             if Thing["T_LIFEPOINTS"]:
1209                 if not Thing["T_COMMAND"]:
1210                     update_map_memory(Thing)
1211                     if 0 == id:
1212                         whilebreaker = True
1213                         break
1214                     ai(Thing)
1215                 try_healing(Thing)
1216                 hunger(Thing)
1217                 if Thing["T_LIFEPOINTS"]:
1218                     Thing["T_PROGRESS"] += 1
1219                     taid = [a for a in world_db["ThingActions"]
1220                               if a == Thing["T_COMMAND"]][0]
1221                     ThingAction = world_db["ThingActions"][taid]
1222                     if Thing["T_PROGRESS"] == ThingAction["TA_EFFORT"]:
1223                         eval("actor_" + ThingAction["TA_NAME"])(Thing)
1224                         Thing["T_COMMAND"] = 0
1225                         Thing["T_PROGRESS"] = 0
1226             thingproliferation(Thing, proliferable_map)
1227         if whilebreaker:
1228             break
1229         world_db["TURN"] += 1
1230
1231
1232 def new_Thing(type, pos=(0, 0)):
1233     """Return Thing of type T_TYPE, with fovmap if alive and world active."""
1234     thing = {
1235         "T_LIFEPOINTS": world_db["ThingTypes"][type]["TT_LIFEPOINTS"],
1236         "T_ARGUMENT": 0,
1237         "T_PROGRESS": 0,
1238         "T_SATIATION": 0,
1239         "T_COMMAND": 0,
1240         "T_PLAYERDROP": 0,  # #
1241         "T_TYPE": type,
1242         "T_POSY": pos[0],
1243         "T_POSX": pos[1],
1244         "T_CARRIES": [],
1245         "carried": False,
1246         "T_MEMTHING": [],
1247         "T_MEMMAP": False,
1248         "T_MEMDEPTHMAP": False,
1249         "fovmap": False
1250     }
1251     if world_db["WORLD_ACTIVE"] and thing["T_LIFEPOINTS"]:
1252         build_fov_map(thing)
1253     return thing
1254
1255
1256 def id_setter(id, category, id_store=False, start_at_1=False):
1257     """Set ID of object of category to manipulate ID unused? Create new one.
1258
1259     The ID is stored as id_store.id (if id_store is set). If the integer of the
1260     input is valid (if start_at_1, >= 0, else >= -1), but <0 or (if start_at_1)
1261     <1, calculate new ID: lowest unused ID >=0 or (if start_at_1) >= 1. None is
1262     always returned when no new object is created, otherwise the new object's
1263     ID.
1264     """
1265     min = 0 if start_at_1 else -1
1266     if str == type(id):
1267         id = integer_test(id, min)
1268     if None != id:
1269         if id in world_db[category]:
1270             if id_store:
1271                 id_store.id = id
1272             return None
1273         else:
1274             if (start_at_1 and 0 == id) \
1275                or ((not start_at_1) and (id < 0)):
1276                 id = 0 if start_at_1 else -1
1277                 while 1:
1278                     id = id + 1
1279                     if id not in world_db[category]:
1280                         break
1281             if id_store:
1282                 id_store.id = id
1283     return id
1284
1285
1286 def command_ping():
1287     """Send PONG line to server output file."""
1288     strong_write(io_db["file_out"], "PONG\n")
1289
1290
1291 def command_quit():
1292     """Abort server process."""
1293     if None == opts.replay:
1294         if world_db["WORLD_ACTIVE"]:
1295             save_world()
1296         atomic_write(io_db["path_record"], io_db["record_chunk"], do_append=True)
1297     raise SystemExit("received QUIT command")
1298
1299
1300 def command_thingshere(str_y, str_x):
1301     """Write to out file list of Things known to player at coordinate y, x."""
1302     if world_db["WORLD_ACTIVE"]:
1303         y = integer_test(str_y, 0, 255)
1304         x = integer_test(str_x, 0, 255)
1305         length = world_db["MAP_LENGTH"]
1306         if None != y and None != x and y < length and x < length:
1307             pos = (y * world_db["MAP_LENGTH"]) + x
1308             strong_write(io_db["file_out"], "THINGS_HERE START\n")
1309             if "v" == chr(world_db["Things"][0]["fovmap"][pos]):
1310                 for id in world_db["Things"]:
1311                     if y == world_db["Things"][id]["T_POSY"] \
1312                        and x == world_db["Things"][id]["T_POSX"] \
1313                        and not world_db["Things"][id]["carried"]:
1314                         type = world_db["Things"][id]["T_TYPE"]
1315                         name = world_db["ThingTypes"][type]["TT_NAME"]
1316                         strong_write(io_db["file_out"], name + "\n")
1317             else:
1318                 for mt in world_db["Things"][0]["T_MEMTHING"]:
1319                     if y == mt[1] and x == mt[2]:
1320                         name = world_db["ThingTypes"][mt[0]]["TT_NAME"]
1321                         strong_write(io_db["file_out"], name + "\n")
1322             strong_write(io_db["file_out"], "THINGS_HERE END\n")
1323         else:
1324             print("Ignoring: Invalid map coordinates.")
1325     else:
1326         print("Ignoring: Command only works on existing worlds.")
1327
1328
1329 def play_commander(action, args=False):
1330     """Setter for player's T_COMMAND and T_ARGUMENT, then calling turn_over().
1331
1332     T_ARGUMENT is set to direction char if action=="wait",or 8-bit int if args.
1333     """
1334
1335     def set_command():
1336         id = [x for x in world_db["ThingActions"]
1337                 if world_db["ThingActions"][x]["TA_NAME"] == action][0]
1338         world_db["Things"][0]["T_COMMAND"] = id
1339         turn_over()
1340
1341     def set_command_and_argument_int(str_arg):
1342         val = integer_test(str_arg, 0, 255)
1343         if None != val:
1344             world_db["Things"][0]["T_ARGUMENT"] = val
1345             set_command()
1346
1347     def set_command_and_argument_movestring(str_arg):
1348         if str_arg in directions_db:
1349             world_db["Things"][0]["T_ARGUMENT"] = ord(directions_db[str_arg])
1350             set_command()
1351         else:
1352             print("Ignoring: Argument must be valid direction string.")
1353
1354     if action == "move":
1355         return set_command_and_argument_movestring
1356     elif args:
1357         return set_command_and_argument_int
1358     else:
1359         return set_command
1360
1361
1362 def command_seedrandomness(seed_string):
1363     """Set rand seed to int(seed_string)."""
1364     val = integer_test(seed_string, 0, 4294967295)
1365     if None != val:
1366         rand.seed = val
1367
1368
1369 def command_makeworld(seed_string):
1370     """(Re-)build game world, i.e. map, things, to a new turn 1 from seed.
1371
1372     Seed rand with seed. Do more only with a "wait" ThingAction and
1373     world["PLAYER_TYPE"] matching ThingType of TT_START_NUMBER > 0. Then,
1374     world_db["Things"] emptied, call make_map() and set
1375     world_db["WORLD_ACTIVE"], world_db["TURN"] to 1. Build new Things
1376     according to ThingTypes' TT_START_NUMBERS, with Thing of ID 0 to ThingType
1377     of ID = world["PLAYER_TYPE"]. Place Things randomly, and actors not on each
1378     other. Init player's memory map. Write "NEW_WORLD" line to out file.
1379     Call log_help().
1380     """
1381
1382     # def free_pos(plant=False):
1383     def free_pos(plant=False):  # #
1384         i = 0
1385         while 1:
1386             err = "Space to put thing on too hard to find. Map too small?"
1387             while 1:
1388                 y = rand.next() % world_db["MAP_LENGTH"]
1389                 x = rand.next() % world_db["MAP_LENGTH"]
1390                 pos = y * world_db["MAP_LENGTH"] + x;
1391                 if (not plant  # #
1392                     and "." == chr(world_db["MAP"][pos])) \
1393                    or ":" == chr(world_db["MAP"][pos]):  # #
1394                     break
1395                 i += 1
1396                 if i == 65535:
1397                     raise SystemExit(err)
1398             # Replica of C code, wrongly ignores animatedness of new Thing.
1399             pos_clear = (0 == len([id for id in world_db["Things"]
1400                                    if world_db["Things"][id]["T_LIFEPOINTS"]
1401                                    if world_db["Things"][id]["T_POSY"] == y
1402                                    if world_db["Things"][id]["T_POSX"] == x]))
1403             if pos_clear:
1404                 break
1405         return (y, x)
1406
1407     val = integer_test(seed_string, 0, 4294967295)
1408     if None == val:
1409         return
1410     rand.seed = val
1411     player_will_be_generated = False
1412     playertype = world_db["PLAYER_TYPE"]
1413     for ThingType in world_db["ThingTypes"]:
1414         if playertype == ThingType:
1415             if 0 < world_db["ThingTypes"][ThingType]["TT_START_NUMBER"]:
1416                 player_will_be_generated = True
1417             break
1418     if not player_will_be_generated:
1419         print("Ignoring: No player type with start number >0 defined.")
1420         return
1421     wait_action = False
1422     for ThingAction in world_db["ThingActions"]:
1423         if "wait" == world_db["ThingActions"][ThingAction]["TA_NAME"]:
1424             wait_action = True
1425     if not wait_action:
1426         print("Ignoring: No thing action with name 'wait' defined.")
1427         return
1428     if not world_db["SLIPPERS"] in world_db["ThingTypes"]:  # #
1429         print("Ignoring: No valid SLIPPERS set.")  # #
1430         return  # #
1431     if not world_db["PLANT_0"] in world_db["ThingTypes"]:  # #
1432         print("Ignoring: No valid PLANT_0 set.")  # #
1433         return  # #
1434     world_db["Things"] = {}
1435     make_map()
1436     world_db["WORLD_ACTIVE"] = 1
1437     world_db["TURN"] = 1
1438     for i in range(world_db["ThingTypes"][playertype]["TT_START_NUMBER"]):
1439         id = id_setter(-1, "Things")
1440         world_db["Things"][id] = new_Thing(playertype, free_pos())
1441     if not world_db["Things"][0]["fovmap"]:
1442         empty_fovmap = bytearray(b" " * world_db["MAP_LENGTH"] ** 2)
1443         world_db["Things"][0]["fovmap"] = empty_fovmap
1444     update_map_memory(world_db["Things"][0])
1445     for type in world_db["ThingTypes"]:
1446         for i in range(world_db["ThingTypes"][type]["TT_START_NUMBER"]):
1447             if type != playertype:
1448                 id = id_setter(-1, "Things")
1449                 plantness = world_db["ThingTypes"][type]["TT_PROLIFERATE"]  # #
1450                 world_db["Things"][id] = new_Thing(type, free_pos(plantness))
1451     strong_write(io_db["file_out"], "NEW_WORLD\n")
1452     log_help()
1453
1454
1455 def command_maplength(maplength_string):
1456     """Redefine map length. Invalidate map, therefore lose all things on it."""
1457     val = integer_test(maplength_string, 1, 256)
1458     if None != val:
1459         world_db["MAP_LENGTH"] = val
1460         world_db["MAP"] = False
1461         set_world_inactive()
1462         world_db["Things"] = {}
1463         libpr.set_maplength(val)
1464
1465
1466 def command_worldactive(worldactive_string):
1467     """Toggle world_db["WORLD_ACTIVE"] if possible.
1468
1469     An active world can always be set inactive. An inactive world can only be
1470     set active with a "wait" ThingAction, and a player Thing (of ID 0), and a
1471     map. On activation, rebuild all Things' FOVs, and the player's map memory.
1472     Also call log_help().
1473     """
1474     # 7DRL: altar must be on map, and (valid) SLIPPERS and PLANT_0must be set
1475     # for world activation.
1476     val = integer_test(worldactive_string, 0, 1)
1477     if None != val:
1478         if 0 != world_db["WORLD_ACTIVE"]:
1479             if 0 == val:
1480                 set_world_inactive()
1481             else:
1482                 print("World already active.")
1483         elif 0 == world_db["WORLD_ACTIVE"]:
1484             wait_exists = False
1485             for ThingAction in world_db["ThingActions"]:
1486                 if "wait" == world_db["ThingActions"][ThingAction]["TA_NAME"]:
1487                     wait_exists = True
1488                     break
1489             player_exists = False
1490             for Thing in world_db["Things"]:
1491                 if 0 == Thing:
1492                     player_exists = True
1493                     break
1494             valid_slippers = world_db["SLIPPERS"] in world_db["ThingTypes"]  # #
1495             valid_plant0 = world_db["PLANT_0"] in world_db["ThingTypes"]  # #
1496             altar_found = False  # #
1497             if world_db["MAP"]:  # #
1498                 pos = world_db["MAP"].find(b'_')  # #
1499                 if pos > 0:  # #
1500                     y = int(pos / world_db["MAP_LENGTH"])  # #
1501                     x = pos % world_db["MAP_LENGTH"]  # #
1502                     world_db["altar"] = (y, x)  # #
1503                     altar_found = True  # #
1504             if wait_exists and player_exists and world_db["MAP"] \
1505                 and altar_found and valid_slippers and valid_plant0:  # #
1506                 for id in world_db["Things"]:
1507                     if world_db["Things"][id]["T_LIFEPOINTS"]:
1508                         build_fov_map(world_db["Things"][id])
1509                         if 0 == id:
1510                             update_map_memory(world_db["Things"][id], False)
1511                 if not world_db["Things"][0]["T_LIFEPOINTS"]:
1512                     empty_fovmap = bytearray(b" " * world_db["MAP_LENGTH"] ** 2)
1513                     world_db["Things"][0]["fovmap"] = empty_fovmap
1514                 world_db["WORLD_ACTIVE"] = 1
1515                 log_help()
1516             else:
1517                 print("Ignoring: Not all conditions for world activation met.")
1518
1519
1520 def command_slippers(str_int):  # #
1521     """Set SLIPPERS, but deactivate world if not in ThingTypes."""
1522     val = integer_test(str_int, 0)
1523     if None != val:
1524         world_db["SLIPPERS"] = val
1525         if world_db["WORLD_ACTIVE"] and \
1526            world_db["SLIPPERS"] not in world_db["ThingTypes"]:
1527             world_db["WORLD_ACTIVE"] = 0
1528             print("SLIPPERS matches no known ThingTypes, deactivating world.")
1529
1530
1531 def command_plant0(str_int):  # #
1532     """Set PLANT_0, but deactivate world if not in ThingTypes."""
1533     val = integer_test(str_int, 0)
1534     if None != val:
1535         world_db["PLANT_0"] = val
1536         if world_db["WORLD_ACTIVE"] and \
1537            world_db["PLANT_0"] not in world_db["ThingTypes"]:
1538             world_db["WORLD_ACTIVE"] = 0
1539             print("PLANT_0 matches no known ThingTypes, deactivating world.")
1540
1541
1542 def test_for_id_maker(object, category):
1543     """Return decorator testing for object having "id" attribute."""
1544     def decorator(f):
1545         def helper(*args):
1546             if hasattr(object, "id"):
1547                 f(*args)
1548             else:
1549                 print("Ignoring: No " + category +
1550                       " defined to manipulate yet.")
1551         return helper
1552     return decorator
1553
1554
1555 def command_tid(id_string):
1556     """Set ID of Thing to manipulate. ID unused? Create new one.
1557
1558     Default new Thing's type to the first available ThingType, others: zero.
1559     """
1560     id = id_setter(id_string, "Things", command_tid)
1561     if None != id:
1562         if world_db["ThingTypes"] == {}:
1563             print("Ignoring: No ThingType to settle new Thing in.")
1564             return
1565         type = list(world_db["ThingTypes"].keys())[0]
1566         world_db["Things"][id] = new_Thing(type)
1567
1568
1569 test_Thing_id = test_for_id_maker(command_tid, "Thing")
1570
1571
1572 @test_Thing_id
1573 def command_tcommand(str_int):
1574     """Set T_COMMAND of selected Thing."""
1575     val = integer_test(str_int, 0)
1576     if None != val:
1577         if 0 == val or val in world_db["ThingActions"]:
1578             world_db["Things"][command_tid.id]["T_COMMAND"] = val
1579         else:
1580             print("Ignoring: ThingAction ID belongs to no known ThingAction.")
1581
1582
1583 @test_Thing_id
1584 def command_ttype(str_int):
1585     """Set T_TYPE of selected Thing."""
1586     val = integer_test(str_int, 0)
1587     if None != val:
1588         if val in world_db["ThingTypes"]:
1589             world_db["Things"][command_tid.id]["T_TYPE"] = val
1590         else:
1591             print("Ignoring: ThingType ID belongs to no known ThingType.")
1592
1593
1594 @test_Thing_id
1595 def command_tcarries(str_int):
1596     """Append int(str_int) to T_CARRIES of selected Thing.
1597
1598     The ID int(str_int) must not be of the selected Thing, and must belong to a
1599     Thing with unset "carried" flag. Its "carried" flag will be set on owning.
1600     """
1601     val = integer_test(str_int, 0)
1602     if None != val:
1603         if val == command_tid.id:
1604             print("Ignoring: Thing cannot carry itself.")
1605         elif val in world_db["Things"] \
1606              and not world_db["Things"][val]["carried"]:
1607             world_db["Things"][command_tid.id]["T_CARRIES"].append(val)
1608             world_db["Things"][val]["carried"] = True
1609         else:
1610             print("Ignoring: Thing not available for carrying.")
1611     # Note that the whole carrying structure is different from the C version:
1612     # Carried-ness is marked by a "carried" flag, not by Things containing
1613     # Things internally.
1614
1615
1616 @test_Thing_id
1617 def command_tmemthing(str_t, str_y, str_x):
1618     """Add (int(str_t), int(str_y), int(str_x)) to selected Thing's T_MEMTHING.
1619
1620     The type must fit to an existing ThingType, and the position into the map.
1621     """
1622     type = integer_test(str_t, 0)
1623     posy = integer_test(str_y, 0, 255)
1624     posx = integer_test(str_x, 0, 255)
1625     if None != type and None != posy and None != posx:
1626         if type not in world_db["ThingTypes"] \
1627            or posy >= world_db["MAP_LENGTH"] or posx >= world_db["MAP_LENGTH"]:
1628             print("Ignoring: Illegal value for thing type or position.")
1629         else:
1630             memthing = (type, posy, posx)
1631             world_db["Things"][command_tid.id]["T_MEMTHING"].append(memthing)
1632
1633
1634 def setter_map(maptype):
1635     """Set (world or Thing's) map of maptype's int(str_int)-th line to mapline.
1636
1637     If no map of maptype exists yet, initialize it with ' ' bytes first.
1638     """
1639
1640     def valid_map_line(str_int, mapline):
1641         val = integer_test(str_int, 0, 255)
1642         if None != val:
1643             if val >= world_db["MAP_LENGTH"]:
1644                 print("Illegal value for map line number.")
1645             elif len(mapline) != world_db["MAP_LENGTH"]:
1646                 print("Map line length is unequal map width.")
1647             else:
1648                 return val
1649         return None
1650
1651     def nonThingMap_helper(str_int, mapline):
1652         val = valid_map_line(str_int, mapline)
1653         if None != val:
1654             length = world_db["MAP_LENGTH"]
1655             if not world_db["MAP"]:
1656                 map = bytearray(b' ' * (length ** 2))
1657             else:
1658                 map = world_db["MAP"]
1659             map[val * length:(val * length) + length] = mapline.encode()
1660             if not world_db["MAP"]:
1661                 world_db["MAP"] = map
1662
1663     @test_Thing_id
1664     def ThingMap_helper(str_int, mapline):
1665         val = valid_map_line(str_int, mapline)
1666         if None != val:
1667             length = world_db["MAP_LENGTH"]
1668             if not world_db["Things"][command_tid.id][maptype]:
1669                 map = bytearray(b' ' * (length ** 2))
1670             else:
1671                 map = world_db["Things"][command_tid.id][maptype]
1672             map[val * length:(val * length) + length] = mapline.encode()
1673             if not world_db["Things"][command_tid.id][maptype]:
1674                 world_db["Things"][command_tid.id][maptype] = map
1675
1676     return nonThingMap_helper if maptype == "MAP" else ThingMap_helper
1677
1678
1679 def setter_tpos(axis):
1680     """Generate setter for T_POSX or  T_POSY of selected Thing.
1681
1682     If world is active, rebuilds animate things' fovmap, player's memory map.
1683     """
1684     @test_Thing_id
1685     def helper(str_int):
1686         val = integer_test(str_int, 0, 255)
1687         if None != val:
1688             if val < world_db["MAP_LENGTH"]:
1689                 world_db["Things"][command_tid.id]["T_POS" + axis] = val
1690                 if world_db["WORLD_ACTIVE"] \
1691                    and world_db["Things"][command_tid.id]["T_LIFEPOINTS"]:
1692                     build_fov_map(world_db["Things"][command_tid.id])
1693                     if 0 == command_tid.id:
1694                         update_map_memory(world_db["Things"][command_tid.id])
1695             else:
1696                 print("Ignoring: Position is outside of map.")
1697     return helper
1698
1699
1700 def command_ttid(id_string):
1701     """Set ID of ThingType to manipulate. ID unused? Create new one.
1702
1703     Default new ThingType's TT_SYMBOL to "?", TT_CORPSE_ID to self, TT_TOOL to
1704     "", others: 0.
1705     """
1706     id = id_setter(id_string, "ThingTypes", command_ttid)
1707     if None != id:
1708         world_db["ThingTypes"][id] = {
1709             "TT_NAME": "(none)",
1710             "TT_TOOLPOWER": 0,
1711             "TT_LIFEPOINTS": 0,
1712             "TT_PROLIFERATE": 0,
1713             "TT_START_NUMBER": 0,
1714             "TT_STORAGE": 0, # #
1715             "TT_SYMBOL": "?",
1716             "TT_CORPSE_ID": id,
1717             "TT_TOOL": ""
1718         }
1719
1720
1721 test_ThingType_id = test_for_id_maker(command_ttid, "ThingType")
1722
1723
1724 @test_ThingType_id
1725 def command_ttname(name):
1726     """Set TT_NAME of selected ThingType."""
1727     world_db["ThingTypes"][command_ttid.id]["TT_NAME"] = name
1728
1729
1730 @test_ThingType_id
1731 def command_tttool(name):
1732     """Set TT_TOOL of selected ThingType."""
1733     world_db["ThingTypes"][command_ttid.id]["TT_TOOL"] = name
1734
1735
1736 @test_ThingType_id
1737 def command_ttsymbol(char):
1738     """Set TT_SYMBOL of selected ThingType. """
1739     if 1 == len(char):
1740         world_db["ThingTypes"][command_ttid.id]["TT_SYMBOL"] = char
1741     else:
1742         print("Ignoring: Argument must be single character.")
1743
1744
1745 @test_ThingType_id
1746 def command_ttcorpseid(str_int):
1747     """Set TT_CORPSE_ID of selected ThingType."""
1748     val = integer_test(str_int, 0)
1749     if None != val:
1750         if val in world_db["ThingTypes"]:
1751             world_db["ThingTypes"][command_ttid.id]["TT_CORPSE_ID"] = val
1752         else:
1753             print("Ignoring: Corpse ID belongs to no known ThignType.")
1754
1755
1756 def command_taid(id_string):
1757     """Set ID of ThingAction to manipulate. ID unused? Create new one.
1758
1759     Default new ThingAction's TA_EFFORT to 1, its TA_NAME to "wait".
1760     """
1761     id = id_setter(id_string, "ThingActions", command_taid, True)
1762     if None != id:
1763         world_db["ThingActions"][id] = {
1764             "TA_EFFORT": 1,
1765             "TA_NAME": "wait"
1766         }
1767
1768
1769 test_ThingAction_id = test_for_id_maker(command_taid, "ThingAction")
1770
1771
1772 @test_ThingAction_id
1773 def command_taname(name):
1774     """Set TA_NAME of selected ThingAction.
1775
1776     The name must match a valid thing action function. If after the name
1777     setting no ThingAction with name "wait" remains, call set_world_inactive().
1778     """
1779     if name == "wait" or name == "move" or name == "use" or name == "drop" \
1780        or name == "pick_up":
1781         world_db["ThingActions"][command_taid.id]["TA_NAME"] = name
1782         if 1 == world_db["WORLD_ACTIVE"]:
1783             wait_defined = False
1784             for id in world_db["ThingActions"]:
1785                 if "wait" == world_db["ThingActions"][id]["TA_NAME"]:
1786                     wait_defined = True
1787                     break
1788             if not wait_defined:
1789                 set_world_inactive()
1790     else:
1791         print("Ignoring: Invalid action name.")
1792     # In contrast to the original,naming won't map a function to a ThingAction.
1793
1794
1795 def command_ai():
1796     """Call ai() on player Thing, then turn_over()."""
1797     ai(world_db["Things"][0])
1798     turn_over()
1799
1800
1801 """Commands database.
1802
1803 Map command start tokens to ([0]) number of expected command arguments, ([1])
1804 the command's meta-ness (i.e. is it to be written to the record file, is it to
1805 be ignored in replay mode if read from server input file), and ([2]) a function
1806 to be called on it.
1807 """
1808 commands_db = {
1809     "QUIT": (0, True, command_quit),
1810     "PING": (0, True, command_ping),
1811     "THINGS_HERE": (2, True, command_thingshere),
1812     "MAKE_WORLD": (1, False, command_makeworld),
1813     "SEED_RANDOMNESS": (1, False, command_seedrandomness),
1814     "TURN": (1, False, setter(None, "TURN", 0, 65535)),
1815     "GOD_MOOD": (1, False, setter(None, "GOD_MOOD", -32768, 32767)),  # #
1816     "GOD_FAVOR": (1, False, setter(None, "GOD_FAVOR", -32768, 32767)),  # #
1817     "PLAYER_TYPE": (1, False, setter(None, "PLAYER_TYPE", 0)),
1818     "MAP_LENGTH": (1, False, command_maplength),
1819     "WORLD_ACTIVE": (1, False, command_worldactive),
1820     "MAP": (2, False, setter_map("MAP")),
1821     "FAVOR_STAGE": (1, False, setter(None, "FAVOR_STAGE", 0, 65535)),  # #
1822     "SLIPPERS": (1, False, command_slippers),  # #
1823     "PLANT_0": (1, False, command_plant0),  # #
1824     "TA_ID": (1, False, command_taid),
1825     "TA_EFFORT": (1, False, setter("ThingAction", "TA_EFFORT", 0, 255)),
1826     "TA_NAME": (1, False, command_taname),
1827     "TT_ID": (1, False, command_ttid),
1828     "TT_NAME": (1, False, command_ttname),
1829     "TT_TOOL": (1, False, command_tttool),
1830     "TT_SYMBOL": (1, False, command_ttsymbol),
1831     "TT_CORPSE_ID": (1, False, command_ttcorpseid),
1832     "TT_TOOLPOWER": (1, False, setter("ThingType", "TT_TOOLPOWER", 0, 65535)),
1833     "TT_START_NUMBER": (1, False, setter("ThingType", "TT_START_NUMBER",
1834                                          0, 255)),
1835     "TT_PROLIFERATE": (1, False, setter("ThingType", "TT_PROLIFERATE",
1836                                         0, 65535)),
1837     "TT_LIFEPOINTS": (1, False, setter("ThingType", "TT_LIFEPOINTS", 0, 255)),
1838     "TT_STORAGE": (1, False, setter("ThingType", "TT_STORAGE", 0, 255)),  # #
1839     "T_ID": (1, False, command_tid),
1840     "T_ARGUMENT": (1, False, setter("Thing", "T_ARGUMENT", 0, 255)),
1841     "T_PROGRESS": (1, False, setter("Thing", "T_PROGRESS", 0, 255)),
1842     "T_LIFEPOINTS": (1, False, setter("Thing", "T_LIFEPOINTS", 0, 255)),
1843     "T_SATIATION": (1, False, setter("Thing", "T_SATIATION", -32768, 32767)),
1844     "T_COMMAND": (1, False, command_tcommand),
1845     "T_TYPE": (1, False, command_ttype),
1846     "T_CARRIES": (1, False, command_tcarries),
1847     "T_MEMMAP": (2, False, setter_map("T_MEMMAP")),
1848     "T_MEMDEPTHMAP": (2, False, setter_map("T_MEMDEPTHMAP")),
1849     "T_MEMTHING": (3, False, command_tmemthing),
1850     "T_POSY": (1, False, setter_tpos("Y")),
1851     "T_POSX": (1, False, setter_tpos("X")),
1852     "T_PLAYERDROP": (1, False, setter("Thing", "T_PLAYERDROP", 0, 1)),  # #
1853     "wait": (0, False, play_commander("wait")),
1854     "move": (1, False, play_commander("move")),
1855     "pick_up": (0, False, play_commander("pick_up")),
1856     "drop": (1, False, play_commander("drop", True)),
1857     "use": (1, False, play_commander("use", True)),
1858     "ai": (0, False, command_ai)
1859 }
1860 # TODO: Unhandled cases: (Un-)killing animates (esp. player!) with T_LIFEPOINTS.
1861
1862
1863 """World state database. With sane default values. (Randomness is in rand.)"""
1864 world_db = {
1865     "TURN": 0,
1866     "MAP_LENGTH": 64,
1867     "PLAYER_TYPE": 0,
1868     "WORLD_ACTIVE": 0,
1869     "GOD_MOOD": 0,  # #
1870     "GOD_FAVOR": 0,  # #
1871     "MAP": False,
1872     "FAVOR_STAGE": 0,  # #
1873     "SLIPPERS": 0,  # #
1874     "PLANT_0": 0,  # #
1875     "ThingActions": {},
1876     "ThingTypes": {},
1877     "Things": {}
1878 }
1879
1880 """Mapping of direction names to internal direction chars."""
1881 directions_db = {"east": "d", "south-east": "c", "south-west": "x",
1882                  "west": "s", "north-west": "w", "north-east": "e"}
1883
1884 """File IO database."""
1885 io_db = {
1886     "path_save": "save",
1887     "path_record": "record_save",
1888     "path_worldconf": "confserver/world",
1889     "path_server": "server/",
1890     "path_in": "server/in",
1891     "path_out": "server/out",
1892     "path_worldstate": "server/worldstate",
1893     "tmp_suffix": "_tmp",
1894     "kicked_by_rival": False,
1895     "worldstate_updateable": False
1896 }
1897
1898
1899 try:
1900     libpr = prep_library()
1901     rand = RandomnessIO()
1902     opts = parse_command_line_arguments()
1903     if opts.savefile:
1904         io_db["path_save"] = opts.savefile
1905         io_db["path_record"] = "record_" + opts.savefile
1906     setup_server_io()
1907     if opts.verbose:
1908         io_db["verbose"] = True
1909     if None != opts.replay:
1910         replay_game()
1911     else:
1912         play_game()
1913 except SystemExit as exit:
1914     print("ABORTING: " + exit.args[0])
1915 except:
1916     print("SOMETHING WENT WRONG IN UNEXPECTED WAYS")
1917     raise
1918 finally:
1919     cleanup_server_io()