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 118 == t["fovmap"][Thing["pos"]] and not Thing == t]
  63
  64     def good_attack_target(v):
  65         eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
  66         ty = world_db["ThingTypes"][v["T_TYPE"]]
  67         type_corpse = world_db["ThingTypes"][ty["TT_CORPSE_ID"]]
  68         if t["T_LIFEPOINTS"] > ty["TT_LIFEPOINTS"] \
  69         and type_corpse["TT_TOOL"] == "food" \
  70         and type_corpse["TT_TOOLPOWER"] > eat_cost:
  71             return True
  72         return False
  73
  74     def good_flee_target(m):
  75         own_corpse_id = world_db["ThingTypes"][t["T_TYPE"]]["TT_CORPSE_ID"]
  76         corpse_type = world_db["ThingTypes"][own_corpse_id]
  77         targetness = 0 if corpse_type["TT_TOOL"] != "food" \
  78                        else corpse_type["TT_TOOLPOWER"]
  79         type = world_db["ThingTypes"][m["T_TYPE"]]
  80         if t["T_LIFEPOINTS"] < type["TT_LIFEPOINTS"] \
  81         and targetness > eat_vs_hunger_threshold(m["T_TYPE"]):
  82             return True
  83         return False
  84
  85     def seeing_thing():
  86         def exists(gen):
  87             try:
  88                 next(gen)
  89             except StopIteration:
  90                 return False
  91             return True
  92         maplength = world_db["MAP_LENGTH"]
  93         if t["fovmap"] and "a" == filter:
  94             return exists(Thing for Thing in animates_in_fov(maplength)
  95                                 if good_attack_target(Thing))
  96         elif t["fovmap"] and "f" == filter:
  97             return exists(Thing for Thing in animates_in_fov(maplength)
  98                                 if good_flee_target(Thing))
  99         elif t["T_MEMMAP"] and "c" == filter:
 100             eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
 101             ord_blank = ord(" ")
 102             map_len = world_db["MAP_LENGTH"]
 103             return exists(mt for mt in t["T_MEMTHING"]
 104                           if ord_blank != t["T_MEMMAP"][mt[1] * map_len + mt[2]]
 105                           and world_db["ThingTypes"][mt[0]]["TT_TOOL"] == "food"
 106                           and world_db["ThingTypes"][mt[0]]["TT_TOOLPOWER"]
 107                              > eat_cost)
 108         return False
 109
 110     def set_cells_passable_on_memmap_to_65534_on_scoremap():
 111         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
 112         # memmap = t["T_MEMMAP"]
 113         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
 114         #            if memmap[i] in symbols_passable]:
 115         #     set_map_score(i, 65534) # i.e. 65535-1
 116         map = c_pointer_to_bytearray(t["T_MEMMAP"])
 117         if libpr.set_cells_passable_on_memmap_to_65534_on_scoremap(map,
 118                     symbols_passable):
 119             raise RuntimeError("No score map allocated for set_cells_passable"
 120                                "_on_memmap_to_65534_on_scoremap().")
 121
 122     def init_score_map():
 123         test = libpr.init_score_map()
 124         if test:
 125             raise RuntimeError("Malloc error in init_score_map().")
 126         ord_v = ord("v")
 127         ord_blank = ord(" ")
 128         set_cells_passable_on_memmap_to_65534_on_scoremap()
 129         maplen = world_db["MAP_LENGTH"]
 130         if "a" == filter:
 131             [set_map_score(Thing["pos"], 0) for
 132              Thing in animates_in_fov(maplen) if good_attack_target(Thing)]
 133         elif "f" == filter:
 134             [set_map_score(Thing["pos"], 0) for
 135              Thing in animates_in_fov(maplen) if good_flee_target(Thing)]
 136         elif "c" == filter:
 137             eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
 138             ord_blank = ord(" ")
 139             [set_map_score(mt[1] * maplen + mt[2], 0)
 140              for mt in t["T_MEMTHING"]
 141              if ord_blank != t["T_MEMMAP"][mt[1] * maplen + mt[2]]
 142              if world_db["ThingTypes"][mt[0]]["TT_TOOL"] == "food"
 143              if world_db["ThingTypes"][mt[0]]["TT_TOOLPOWER"] > eat_cost]
 144         elif "s" == filter:
 145             zero_score_map_where_char_on_memdepthmap(mem_depth_c[0])
 146         if "f" == filter:
 147             [set_map_score(Thing["pos"], 65535)
 148              for Thing in animates_in_fov(maplen)
 149              if get_map_score(Thing["pos"])]
 150         elif "a" != filter:
 151             [set_map_score(Thing["pos"], 65535)
 152              for Thing in animates_in_fov(maplen)]
 153
 154     def rand_target_dir(neighbors, cmp, dirs):
 155         candidates = []
 156         n_candidates = 0
 157         for i in range(len(dirs)):
 158             if cmp == neighbors[i]:
 159                 candidates.append(dirs[i])
 160                 n_candidates += 1
 161         return candidates[rand.next() % n_candidates] if n_candidates else 0
 162
 163     def get_neighbor_scores(dirs, eye_pos):
 164         scores = []
 165         if libpr.ready_neighbor_scores(eye_pos):
 166             raise RuntimeError("No score map allocated for " +
 167                                "ready_neighbor_scores.()")
 168         for i in range(len(dirs)):
 169             scores.append(libpr.get_neighbor_score(i))
 170         return scores
 171
 172     def get_dir_from_neighbors():
 173         import math
 174         dir_to_target = False
 175         dirs = "edcxsw"
 176         eye_pos = t["pos"]
 177         neighbors = get_neighbor_scores(dirs, eye_pos)
 178         minmax_start = 0 if "f" == filter else 65535 - 1
 179         minmax_neighbor = minmax_start
 180         for i in range(len(dirs)):
 181             if ("f" == filter and get_map_score(eye_pos) < neighbors[i] and
 182                 minmax_neighbor < neighbors[i] and 65535 != neighbors[i]) \
 183                or ("f" != filter and minmax_neighbor > neighbors[i]):
 184                 minmax_neighbor = neighbors[i]
 185         if minmax_neighbor != minmax_start:
 186             dir_to_target = rand_target_dir(neighbors, minmax_neighbor, dirs)
 187         if "f" == filter:
 188             distance = get_map_score(eye_pos)
 189             fear_distance = world_db["MAP_LENGTH"]
 190             if t["T_SATIATION"] < 0 and math.sqrt(-t["T_SATIATION"]) > 0:
 191                 fear_distance = fear_distance / math.sqrt(-t["T_SATIATION"])
 192             attack_distance = 1
 193             if not dir_to_target:
 194                 if attack_distance >= distance:
 195                     dir_to_target = rand_target_dir(neighbors,
 196                                                     distance - 1, dirs)
 197                 elif fear_distance >= distance:
 198                     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 199                                       if
 200                                       world_db["ThingActions"][id]["TA_NAME"]
 201                                       == "wait"][0]
 202                     return 1
 203             elif dir_to_target and fear_distance < distance:
 204                 dir_to_target = 0
 205         return dir_to_target
 206
 207     dir_to_target = False
 208     mem_depth_c = b' '
 209     run_i = 9 + 1 if "s" == filter else 1
 210     while run_i and not dir_to_target and ("s" == filter or seeing_thing()):
 211         run_i -= 1
 212         init_score_map()
 213         mem_depth_c = b'9' if b' ' == mem_depth_c \
 214             else bytes([mem_depth_c[0] - 1])
 215         if libpr.dijkstra_map():
 216             raise RuntimeError("No score map allocated for dijkstra_map().")
 217         dir_to_target = get_dir_from_neighbors()
 218         libpr.free_score_map()
 219         if dir_to_target and str == type(dir_to_target):
 220             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 221                               if world_db["ThingActions"][id]["TA_NAME"]
 222                               == "move"][0]
 223             t["T_ARGUMENT"] = ord(dir_to_target)
 224     return dir_to_target
 225
 226
 227 def standing_on_food(t):
 228     """Return True/False whether t is standing on healthy consumable."""
 229     eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
 230     for id in [id for id in world_db["Things"] if world_db["Things"][id] != t
 231                if not world_db["Things"][id]["carried"]
 232                if world_db["Things"][id]["pos"] == t["pos"]
 233                if world_db["ThingTypes"][world_db["Things"][id]["T_TYPE"]]
 234                   ["TT_TOOL"] == "food"
 235                if world_db["ThingTypes"][world_db["Things"][id]["T_TYPE"]]
 236                   ["TT_TOOLPOWER"] > eat_cost]:
 237         return True
 238     return False
 239
 240
 241 def get_inventory_slot_to_consume(t):
 242     """Return invent. slot of healthiest consumable(if any healthy),else -1."""
 243     cmp_food = -1
 244     selection = -1
 245     i = 0
 246     eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
 247     for id in t["T_CARRIES"]:
 248         type = world_db["Things"][id]["T_TYPE"]
 249         if world_db["ThingTypes"][type]["TT_TOOL"] == "food" \
 250            and world_db["ThingTypes"][type]["TT_TOOLPOWER"]:
 251             nutvalue = world_db["ThingTypes"][type]["TT_TOOLPOWER"]
 252             tmp_cmp = abs(t["T_SATIATION"] + nutvalue - eat_cost)
 253             if (cmp_food < 0 and tmp_cmp < abs(t["T_SATIATION"])) \
 254             or tmp_cmp < cmp_food:
 255                 cmp_food = tmp_cmp
 256                 selection = i
 257         i += 1
 258     return selection
 259
 260
 261 def ai(t):
 262     """Determine next command/argment for actor t via AI algorithms."""
 263     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 264                       if world_db["ThingActions"][id]["TA_NAME"] == "wait"][0]
 265     eating = len([id for id in world_db["ThingActions"]
 266                   if world_db["ThingActions"][id]["TA_NAME"] == "use"]) > 0
 267     picking = len([id for id in world_db["ThingActions"]
 268                    if world_db["ThingActions"][id]["TA_NAME"] == "pickup"]) > 0
 269     if eating and picking:
 270         if get_dir_to_target(t, "f"):
 271             return
 272         sel = get_inventory_slot_to_consume(t)
 273         from server.config.ai import ai_hook_pickup_test
 274         if -1 != sel:
 275             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 276                               if world_db["ThingActions"][id]["TA_NAME"]
 277                                  == "use"][0]
 278             t["T_ARGUMENT"] = sel
 279         elif standing_on_food(t) and ai_hook_pickup_test(t):
 280                 t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 281                                   if world_db["ThingActions"][id]["TA_NAME"]
 282                                   == "pickup"][0]
 283         else:
 284             going_to_known_food_spot = get_dir_to_target(t, "c")
 285             if not going_to_known_food_spot:
 286                 aiming_for_walking_food = get_dir_to_target(t, "a")
 287                 if not aiming_for_walking_food:
 288                     get_dir_to_target(t, "s")