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