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_at_thingpos(id, score):
  49         pos = world_db["Things"][id]["T_POSY"] * world_db["MAP_LENGTH"] \
  50                                      + world_db["Things"][id]["T_POSX"]
  51         set_map_score(pos, score)
  52
  53     def set_map_score(pos, score):
  54         test = libpr.set_map_score(pos, score)
  55         if test:
  56             raise RuntimeError("No score map allocated for set_map_score().")
  57
  58     def get_map_score(pos):
  59         result = libpr.get_map_score(pos)
  60         if result < 0:
  61             raise RuntimeError("No score map allocated for get_map_score().")
  62         return result
  63
  64     def animate_in_fov(Thing, maplength):
  65         if not Thing["T_LIFEPOINTS"] or Thing["carried"] or Thing == t:
  66             return False
  67         pos = Thing["T_POSY"] * maplength + Thing["T_POSX"]
  68         if 118 == t["fovmap"][pos]: # optimization: 118 = ord("v")
  69             return True
  70
  71     def good_attack_target(v):
  72         eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
  73         type = world_db["ThingTypes"][v["T_TYPE"]]
  74         type_corpse = world_db["ThingTypes"][type["TT_CORPSE_ID"]]
  75         if t["T_LIFEPOINTS"] > type["TT_LIFEPOINTS"] \
  76         and type_corpse["TT_TOOL"] == "food" \
  77         and type_corpse["TT_TOOLPOWER"] > eat_cost:
  78             return True
  79         return False
  80
  81     def good_flee_target(m):
  82         own_corpse_id = world_db["ThingTypes"][t["T_TYPE"]]["TT_CORPSE_ID"]
  83         corpse_type = world_db["ThingTypes"][own_corpse_id]
  84         targetness = 0 if corpse_type["TT_TOOL"] != "food" \
  85                        else corpse_type["TT_TOOLPOWER"]
  86         type = world_db["ThingTypes"][m["T_TYPE"]]
  87         if t["T_LIFEPOINTS"] < type["TT_LIFEPOINTS"] \
  88         and targetness > eat_vs_hunger_threshold(m["T_TYPE"]):
  89             return True
  90         return False
  91
  92     def seeing_thing():
  93         maplength = world_db["MAP_LENGTH"]
  94         if t["fovmap"] and "a" == filter:
  95             for id in world_db["Things"]:
  96                 if animate_in_fov(world_db["Things"][id], maplength):
  97                     if good_attack_target(world_db["Things"][id]):
  98                         return True
  99         elif t["fovmap"] and "f" == filter:
 100             for id in world_db["Things"]:
 101                 if animate_in_fov(world_db["Things"][id], maplength):
 102                     if good_flee_target(world_db["Things"][id]):
 103                         return True
 104         elif t["T_MEMMAP"] and "c" == filter:
 105             eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
 106             ord_blank = ord(" ")
 107             for mt in t["T_MEMTHING"]:
 108                 if ord_blank != chr(t["T_MEMMAP"][(mt[1] * \
 109                        world_db["MAP_LENGTH"]) + 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 True
 114         return False
 115
 116     def set_cells_passable_on_memmap_to_65534_on_scoremap():
 117         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
 118         # memmap = t["T_MEMMAP"]
 119         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
 120         #            if memmap[i] in symbols_passable]:
 121         #     set_map_score(i, 65534) # i.e. 65535-1
 122         map = c_pointer_to_bytearray(t["T_MEMMAP"])
 123         if libpr.set_cells_passable_on_memmap_to_65534_on_scoremap(map,
 124                     symbols_passable):
 125             raise RuntimeError("No score map allocated for set_cells_passable"
 126                                "_on_memmap_to_65534_on_scoremap().")
 127
 128     def init_score_map():
 129         test = libpr.init_score_map()
 130         if test:
 131             raise RuntimeError("Malloc error in init_score_map().")
 132         ord_v = ord("v")
 133         ord_blank = ord(" ")
 134         set_cells_passable_on_memmap_to_65534_on_scoremap()
 135         maplength = world_db["MAP_LENGTH"]
 136         if "a" == filter:
 137             [set_map_score_at_thingpos(id, 0)
 138              for id in world_db["Things"]
 139              if animate_in_fov(world_db["Things"][id], maplength)
 140              if good_attack_target(world_db["Things"][id])]
 141         elif "f" == filter:
 142             [set_map_score_at_thingpos(id, 0)
 143              for id in world_db["Things"]
 144              if animate_in_fov(world_db["Things"][id], maplength)
 145              if good_flee_target(world_db["Things"][id])]
 146         elif "c" == filter:
 147             eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
 148             ord_blank = ord(" ")
 149             [set_map_score(mt[1] * maplength + mt[2], 0)
 150              for mt in t["T_MEMTHING"]
 151              if ord_blank != t["T_MEMMAP"][mt[1] * maplength + mt[2]]
 152              if t != world_db["Things"][0] or
 153                 (world_db["ThingTypes"][mt[0]]["TT_TOOL"] == "food" and
 154                  world_db["ThingTypes"][mt[0]]["TT_TOOLPOWER"] > eat_cost)]
 155         elif "s" == filter:
 156             zero_score_map_where_char_on_memdepthmap(mem_depth_c[0])
 157         if "f" == filter:
 158             [set_map_score_at_thingpos(id, 65535)
 159              for id in world_db["Things"]
 160              if animate_in_fov(world_db["Things"][id], maplength)
 161              if get_map_score(world_db["Things"][id]["T_POSY"] * maplength
 162                               + world_db["Things"][id]["T_POSX"])]
 163         elif "a" != filter:
 164             [set_map_score_at_thingpos(id, 65535)
 165              for id in world_db["Things"]
 166              if animate_in_fov(world_db["Things"][id], maplength)]
 167
 168     def rand_target_dir(neighbors, cmp, dirs):
 169         candidates = []
 170         n_candidates = 0
 171         for i in range(len(dirs)):
 172             if cmp == neighbors[i]:
 173                 candidates.append(dirs[i])
 174                 n_candidates += 1
 175         return candidates[rand.next() % n_candidates] if n_candidates else 0
 176
 177     def get_neighbor_scores(dirs, eye_pos):
 178         scores = []
 179         if libpr.ready_neighbor_scores(eye_pos):
 180             raise RuntimeError("No score map allocated for " +
 181                                "ready_neighbor_scores.()")
 182         for i in range(len(dirs)):
 183             scores.append(libpr.get_neighbor_score(i))
 184         return scores
 185
 186     def get_dir_from_neighbors():
 187         import math
 188         dir_to_target = False
 189         dirs = "edcxsw"
 190         eye_pos = t["T_POSY"] * world_db["MAP_LENGTH"] + t["T_POSX"]
 191         neighbors = get_neighbor_scores(dirs, eye_pos)
 192         minmax_start = 0 if "f" == filter else 65535 - 1
 193         minmax_neighbor = minmax_start
 194         for i in range(len(dirs)):
 195             if ("f" == filter and get_map_score(eye_pos) < neighbors[i] and
 196                 minmax_neighbor < neighbors[i] and 65535 != neighbors[i]) \
 197                or ("f" != filter and minmax_neighbor > neighbors[i]):
 198                 minmax_neighbor = neighbors[i]
 199         if minmax_neighbor != minmax_start:
 200             dir_to_target = rand_target_dir(neighbors, minmax_neighbor, dirs)
 201         if "f" == filter:
 202             distance = get_map_score(eye_pos)
 203             fear_distance = world_db["MAP_LENGTH"]
 204             if t["T_SATIATION"] < 0 and math.sqrt(-t["T_SATIATION"]) > 0:
 205                 fear_distance = fear_distance / math.sqrt(-t["T_SATIATION"])
 206             attack_distance = 1
 207             if not dir_to_target:
 208                 if attack_distance >= distance:
 209                     dir_to_target = rand_target_dir(neighbors,
 210                                                     distance - 1, dirs)
 211                 elif fear_distance >= distance:
 212                     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 213                                       if
 214                                       world_db["ThingActions"][id]["TA_NAME"]
 215                                       == "wait"][0]
 216                     return 1
 217             elif dir_to_target and fear_distance < distance:
 218                 dir_to_target = 0
 219         return dir_to_target
 220
 221     dir_to_target = False
 222     mem_depth_c = b' '
 223     run_i = 9 + 1 if "s" == filter else 1
 224     while run_i and not dir_to_target and ("s" == filter or seeing_thing()):
 225         run_i -= 1
 226         init_score_map()
 227         mem_depth_c = b'9' if b' ' == mem_depth_c \
 228             else bytes([mem_depth_c[0] - 1])
 229         if libpr.dijkstra_map():
 230             raise RuntimeError("No score map allocated for dijkstra_map().")
 231         dir_to_target = get_dir_from_neighbors()
 232         libpr.free_score_map()
 233         if dir_to_target and str == type(dir_to_target):
 234             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 235                               if world_db["ThingActions"][id]["TA_NAME"]
 236                               == "move"][0]
 237             t["T_ARGUMENT"] = ord(dir_to_target)
 238     return dir_to_target
 239
 240
 241 def standing_on_food(t):
 242     """Return True/False whether t is standing on healthy consumable."""
 243     eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
 244     for id in [id for id in world_db["Things"] if world_db["Things"][id] != t
 245                if not world_db["Things"][id]["carried"]
 246                if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
 247                if world_db["Things"][id]["T_POSX"] == t["T_POSX"]
 248                if world_db["ThingTypes"][world_db["Things"][id]["T_TYPE"]]
 249                   ["TT_TOOL"] == "food"
 250                if world_db["ThingTypes"][world_db["Things"][id]["T_TYPE"]]
 251                   ["TT_TOOLPOWER"] > eat_cost]:
 252         return True
 253     return False
 254
 255
 256 def get_inventory_slot_to_consume(t):
 257     """Return invent. slot of healthiest consumable(if any healthy),else -1."""
 258     cmp_food = -1
 259     selection = -1
 260     i = 0
 261     eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
 262     for id in t["T_CARRIES"]:
 263         type = world_db["Things"][id]["T_TYPE"]
 264         if world_db["ThingTypes"][type]["TT_TOOL"] == "food" \
 265            and world_db["ThingTypes"][type]["TT_TOOLPOWER"]:
 266             nutvalue = world_db["ThingTypes"][type]["TT_TOOLPOWER"]
 267             tmp_cmp = abs(t["T_SATIATION"] + nutvalue - eat_cost)
 268             if (cmp_food < 0 and tmp_cmp < abs(t["T_SATIATION"])) \
 269             or tmp_cmp < cmp_food:
 270                 cmp_food = tmp_cmp
 271                 selection = i
 272         i += 1
 273     return selection
 274
 275
 276 def ai(t):
 277     """Determine next command/argment for actor t via AI algorithms."""
 278     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 279                       if world_db["ThingActions"][id]["TA_NAME"] == "wait"][0]
 280     eating = len([id for id in world_db["ThingActions"]
 281                   if world_db["ThingActions"][id]["TA_NAME"] == "use"]) > 0
 282     picking = len([id for id in world_db["ThingActions"]
 283                    if world_db["ThingActions"][id]["TA_NAME"] == "pickup"]) > 0
 284     if eating and picking:
 285         if get_dir_to_target(t, "f"):
 286             return
 287         sel = get_inventory_slot_to_consume(t)
 288         if -1 != sel:
 289             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 290                               if world_db["ThingActions"][id]["TA_NAME"]
 291                                  == "use"][0]
 292             t["T_ARGUMENT"] = sel
 293         elif standing_on_food(t):
 294                 t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 295                                   if world_db["ThingActions"][id]["TA_NAME"]
 296                                   == "pickup"][0]
 297         else:
 298             going_to_known_food_spot = get_dir_to_target(t, "c")
 299             if not going_to_known_food_spot:
 300                 aiming_for_walking_food = get_dir_to_target(t, "a")
 301                 if not aiming_for_walking_food:
 302                     get_dir_to_target(t, "s")