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