plomlompom.com Git - plomrogue/blob - server/ai.py

   1 # This file is part of PlomRogue. PlomRogue is licensed under the GPL version 3
   2 # or any later version. For details on its copyright, license, and warranties,
   3 # see the file NOTICE in the root directory of the PlomRogue source package.
   4
   5
   6 from server.config.world_data import world_db
   7
   8
   9 def eat_vs_hunger_threshold(thingtype):
  10     """Return satiation cost of eating for type. Good food for it must be >."""
  11     from server.world import hunger_per_turn
  12     hunger_unit = hunger_per_turn(thingtype)
  13     actiontype = [id for id in world_db["ThingActions"]
  14                if world_db["ThingActions"][id]["TA_NAME"] == "use"][0]
  15     return world_db["ThingActions"][actiontype]["TA_EFFORT"] * hunger_unit
  16
  17
  18 def get_dir_to_target(t, filter):
  19     """Try to set T_COMMAND/T_ARGUMENT for move to "filter"-determined target.
  20
  21     The path-wise nearest target is chosen, via the shortest available path.
  22     Target must not be t. On succcess, return positive value, else False.
  23     Filters:
  24     "a": Thing in FOV is animate, but of ThingType, starts out weaker than t
  25          is, and its corpse would be healthy food for t
  26     "f": move away from an enemy – any visible actor whose thing type has more
  27          TT_LIFEPOINTS than t LIFEPOINTS, and might find t's corpse healthy
  28          food – if it is closer than n steps, where n will shrink as t's hunger
  29          grows; if enemy is too close, move towards (attack) the enemy instead;
  30          if no fleeing is possible, nor attacking useful, wait; don't tread on
  31          non-enemies for fleeing
  32     "c": Thing in memorized map is consumable of sufficient nutrition for t
  33     "s": memory map cell with greatest-reachable degree of unexploredness
  34     """
  35     from server.utils import rand, libpr, c_pointer_to_bytearray
  36     from server.config.world_data import symbols_passable
  37
  38     def zero_score_map_where_char_on_memdepthmap(c):
  39         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
  40         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
  41         #           if t["T_MEMDEPTHMAP"][i] == mem_depth_c[0]]:
  42         #     set_map_score(i, 0)
  43         map = c_pointer_to_bytearray(t["T_MEMDEPTHMAP"])
  44         if libpr.zero_score_map_where_char_on_memdepthmap(c, map):
  45             raise RuntimeError("No score map allocated for "
  46                                "zero_score_map_where_char_on_memdepthmap().")
  47
  48     def set_map_score(pos, score):
  49         test = libpr.set_map_score(pos, score)
  50         if test:
  51             raise RuntimeError("No score map allocated for set_map_score().")
  52
  53     def get_map_score(pos):
  54         result = libpr.get_map_score(pos)
  55         if result < 0:
  56             raise RuntimeError("No score map allocated for get_map_score().")
  57         return result
  58
  59     def animates_in_fov(maplength):
  60         return [Thing for Thing in world_db["Things"].values()
  61                 if Thing["T_LIFEPOINTS"] and not Thing["carried"]
  62                    and not Thing == t and 118 == t["fovmap"][Thing["T_POSY"] *
  63                    maplength + Thing["T_POSX"]]]
  64
  65     def good_attack_target(v):
  66         eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
  67         type = world_db["ThingTypes"][v["T_TYPE"]]
  68         type_corpse = world_db["ThingTypes"][type["TT_CORPSE_ID"]]
  69         if t["T_LIFEPOINTS"] > type["TT_LIFEPOINTS"] \
  70         and type_corpse["TT_TOOL"] == "food" \
  71         and type_corpse["TT_TOOLPOWER"] > eat_cost:
  72             return True
  73         return False
  74
  75     def good_flee_target(m):
  76         own_corpse_id = world_db["ThingTypes"][t["T_TYPE"]]["TT_CORPSE_ID"]
  77         corpse_type = world_db["ThingTypes"][own_corpse_id]
  78         targetness = 0 if corpse_type["TT_TOOL"] != "food" \
  79                        else corpse_type["TT_TOOLPOWER"]
  80         type = world_db["ThingTypes"][m["T_TYPE"]]
  81         if t["T_LIFEPOINTS"] < type["TT_LIFEPOINTS"] \
  82         and targetness > eat_vs_hunger_threshold(m["T_TYPE"]):
  83             return True
  84         return False
  85
  86     def seeing_thing():
  87         def exists(gen):
  88             try:
  89                 next(gen)
  90             except StopIteration:
  91                 return False
  92             return True
  93         maplength = world_db["MAP_LENGTH"]
  94         if t["fovmap"] and "a" == filter:
  95             return exists(Thing for Thing in animates_in_fov(maplength)
  96                                 if good_attack_target(Thing))
  97         elif t["fovmap"] and "f" == filter:
  98             return exists(Thing for Thing in animates_in_fov(maplength)
  99                                 if good_flee_target(Thing))
 100         elif t["T_MEMMAP"] and "c" == filter:
 101             eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
 102             ord_blank = ord(" ")
 103             map_len = world_db["MAP_LENGTH"]
 104             return exists(mt for mt in t["T_MEMTHING"]
 105                           if ord_blank != t["T_MEMMAP"][mt[1] * map_len + mt[2]]
 106                           and world_db["ThingTypes"][mt[0]]["TT_TOOL"] == "food"
 107                           and world_db["ThingTypes"][mt[0]]["TT_TOOLPOWER"]
 108                              > eat_cost)
 109         return False
 110
 111     def set_cells_passable_on_memmap_to_65534_on_scoremap():
 112         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
 113         # memmap = t["T_MEMMAP"]
 114         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
 115         #            if memmap[i] in symbols_passable]:
 116         #     set_map_score(i, 65534) # i.e. 65535-1
 117         map = c_pointer_to_bytearray(t["T_MEMMAP"])
 118         if libpr.set_cells_passable_on_memmap_to_65534_on_scoremap(map,
 119                     symbols_passable):
 120             raise RuntimeError("No score map allocated for set_cells_passable"
 121                                "_on_memmap_to_65534_on_scoremap().")
 122
 123     def init_score_map():
 124         test = libpr.init_score_map()
 125         if test:
 126             raise RuntimeError("Malloc error in init_score_map().")
 127         ord_v = ord("v")
 128         ord_blank = ord(" ")
 129         set_cells_passable_on_memmap_to_65534_on_scoremap()
 130         maplen = world_db["MAP_LENGTH"]
 131         if "a" == filter:
 132             [set_map_score(Thing["T_POSY"] * maplen + Thing["T_POSX"], 0) for
 133              Thing in animates_in_fov(maplen) if good_attack_target(Thing)]
 134         elif "f" == filter:
 135             [set_map_score(Thing["T_POSY"] * maplen + Thing["T_POSX"], 0) for
 136              Thing in animates_in_fov(maplen) if good_flee_target(Thing)]
 137         elif "c" == filter:
 138             eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
 139             ord_blank = ord(" ")
 140             [set_map_score(mt[1] * maplen + mt[2], 0)
 141              for mt in t["T_MEMTHING"]
 142              if ord_blank != t["T_MEMMAP"][mt[1] * maplen + mt[2]]
 143              if world_db["ThingTypes"][mt[0]]["TT_TOOL"] == "food"
 144              if world_db["ThingTypes"][mt[0]]["TT_TOOLPOWER"] > eat_cost]
 145         elif "s" == filter:
 146             zero_score_map_where_char_on_memdepthmap(mem_depth_c[0])
 147         if "f" == filter:
 148             [set_map_score(Thing["T_POSY"] * maplen + Thing["T_POSX"], 65535)
 149              for Thing in animates_in_fov(maplen) if get_map_score(
 150               Thing["T_POSY"] * maplen + Thing["T_POSX"])]
 151         elif "a" != filter:
 152             [set_map_score(Thing["T_POSY"] * maplen + Thing["T_POSX"],
 153              65535) for Thing in animates_in_fov(maplen)]
 154
 155     def rand_target_dir(neighbors, cmp, dirs):
 156         candidates = []
 157         n_candidates = 0
 158         for i in range(len(dirs)):
 159             if cmp == neighbors[i]:
 160                 candidates.append(dirs[i])
 161                 n_candidates += 1
 162         return candidates[rand.next() % n_candidates] if n_candidates else 0
 163
 164     def get_neighbor_scores(dirs, eye_pos):
 165         scores = []
 166         if libpr.ready_neighbor_scores(eye_pos):
 167             raise RuntimeError("No score map allocated for " +
 168                                "ready_neighbor_scores.()")
 169         for i in range(len(dirs)):
 170             scores.append(libpr.get_neighbor_score(i))
 171         return scores
 172
 173     def get_dir_from_neighbors():
 174         import math
 175         dir_to_target = False
 176         dirs = "edcxsw"
 177         eye_pos = t["T_POSY"] * world_db["MAP_LENGTH"] + t["T_POSX"]
 178         neighbors = get_neighbor_scores(dirs, eye_pos)
 179         minmax_start = 0 if "f" == filter else 65535 - 1
 180         minmax_neighbor = minmax_start
 181         for i in range(len(dirs)):
 182             if ("f" == filter and get_map_score(eye_pos) < neighbors[i] and
 183                 minmax_neighbor < neighbors[i] and 65535 != neighbors[i]) \
 184                or ("f" != filter and minmax_neighbor > neighbors[i]):
 185                 minmax_neighbor = neighbors[i]
 186         if minmax_neighbor != minmax_start:
 187             dir_to_target = rand_target_dir(neighbors, minmax_neighbor, dirs)
 188         if "f" == filter:
 189             distance = get_map_score(eye_pos)
 190             fear_distance = world_db["MAP_LENGTH"]
 191             if t["T_SATIATION"] < 0 and math.sqrt(-t["T_SATIATION"]) > 0:
 192                 fear_distance = fear_distance / math.sqrt(-t["T_SATIATION"])
 193             attack_distance = 1
 194             if not dir_to_target:
 195                 if attack_distance >= distance:
 196                     dir_to_target = rand_target_dir(neighbors,
 197                                                     distance - 1, dirs)
 198                 elif fear_distance >= distance:
 199                     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 200                                       if
 201                                       world_db["ThingActions"][id]["TA_NAME"]
 202                                       == "wait"][0]
 203                     return 1
 204             elif dir_to_target and fear_distance < distance:
 205                 dir_to_target = 0
 206         return dir_to_target
 207
 208     dir_to_target = False
 209     mem_depth_c = b' '
 210     run_i = 9 + 1 if "s" == filter else 1
 211     while run_i and not dir_to_target and ("s" == filter or seeing_thing()):
 212         run_i -= 1
 213         init_score_map()
 214         mem_depth_c = b'9' if b' ' == mem_depth_c \
 215             else bytes([mem_depth_c[0] - 1])
 216         if libpr.dijkstra_map():
 217             raise RuntimeError("No score map allocated for dijkstra_map().")
 218         dir_to_target = get_dir_from_neighbors()
 219         libpr.free_score_map()
 220         if dir_to_target and str == type(dir_to_target):
 221             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 222                               if world_db["ThingActions"][id]["TA_NAME"]
 223                               == "move"][0]
 224             t["T_ARGUMENT"] = ord(dir_to_target)
 225     return dir_to_target
 226
 227
 228 def standing_on_food(t):
 229     """Return True/False whether t is standing on healthy consumable."""
 230     eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
 231     for id in [id for id in world_db["Things"] if world_db["Things"][id] != t
 232                if not world_db["Things"][id]["carried"]
 233                if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
 234                if world_db["Things"][id]["T_POSX"] == t["T_POSX"]
 235                if world_db["ThingTypes"][world_db["Things"][id]["T_TYPE"]]
 236                   ["TT_TOOL"] == "food"
 237                if world_db["ThingTypes"][world_db["Things"][id]["T_TYPE"]]
 238                   ["TT_TOOLPOWER"] > eat_cost]:
 239         return True
 240     return False
 241
 242
 243 def get_inventory_slot_to_consume(t):
 244     """Return invent. slot of healthiest consumable(if any healthy),else -1."""
 245     cmp_food = -1
 246     selection = -1
 247     i = 0
 248     eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
 249     for id in t["T_CARRIES"]:
 250         type = world_db["Things"][id]["T_TYPE"]
 251         if world_db["ThingTypes"][type]["TT_TOOL"] == "food" \
 252            and world_db["ThingTypes"][type]["TT_TOOLPOWER"]:
 253             nutvalue = world_db["ThingTypes"][type]["TT_TOOLPOWER"]
 254             tmp_cmp = abs(t["T_SATIATION"] + nutvalue - eat_cost)
 255             if (cmp_food < 0 and tmp_cmp < abs(t["T_SATIATION"])) \
 256             or tmp_cmp < cmp_food:
 257                 cmp_food = tmp_cmp
 258                 selection = i
 259         i += 1
 260     return selection
 261
 262
 263 def ai(t):
 264     """Determine next command/argment for actor t via AI algorithms."""
 265     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 266                       if world_db["ThingActions"][id]["TA_NAME"] == "wait"][0]
 267     eating = len([id for id in world_db["ThingActions"]
 268                   if world_db["ThingActions"][id]["TA_NAME"] == "use"]) > 0
 269     picking = len([id for id in world_db["ThingActions"]
 270                    if world_db["ThingActions"][id]["TA_NAME"] == "pickup"]) > 0
 271     if eating and picking:
 272         if get_dir_to_target(t, "f"):
 273             return
 274         sel = get_inventory_slot_to_consume(t)
 275         from server.config.ai import ai_hook_pickup_test
 276         if -1 != sel:
 277             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 278                               if world_db["ThingActions"][id]["TA_NAME"]
 279                                  == "use"][0]
 280             t["T_ARGUMENT"] = sel
 281         elif standing_on_food(t) and ai_hook_pickup_test(t):
 282                 t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 283                                   if world_db["ThingActions"][id]["TA_NAME"]
 284                                   == "pickup"][0]
 285         else:
 286             going_to_known_food_spot = get_dir_to_target(t, "c")
 287             if not going_to_known_food_spot:
 288                 aiming_for_walking_food = get_dir_to_target(t, "a")
 289                 if not aiming_for_walking_food:
 290                     get_dir_to_target(t, "s")