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
  37     def zero_score_map_where_char_on_memdepthmap(c):
  38         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
  39         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
  40         #           if t["T_MEMDEPTHMAP"][i] == mem_depth_c[0]]:
  41         #     set_map_score(i, 0)
  42         map = c_pointer_to_bytearray(t["T_MEMDEPTHMAP"])
  43         if libpr.zero_score_map_where_char_on_memdepthmap(c, map):
  44             raise RuntimeError("No score map allocated for "
  45                                "zero_score_map_where_char_on_memdepthmap().")
  46
  47     def set_map_score_at_thingpos(id, score):
  48         pos = world_db["Things"][id]["T_POSY"] * world_db["MAP_LENGTH"] \
  49                                      + world_db["Things"][id]["T_POSX"]
  50         set_map_score(pos, score)
  51
  52     def set_map_score(pos, score):
  53         test = libpr.set_map_score(pos, score)
  54         if test:
  55             raise RuntimeError("No score map allocated for set_map_score().")
  56
  57     def get_map_score(pos):
  58         result = libpr.get_map_score(pos)
  59         if result < 0:
  60             raise RuntimeError("No score map allocated for get_map_score().")
  61         return result
  62
  63     def animate_in_fov(Thing):
  64         if Thing["carried"] or Thing == t or not Thing["T_LIFEPOINTS"]:
  65             return False
  66         pos = Thing["T_POSY"] * world_db["MAP_LENGTH"] + Thing["T_POSX"]
  67         if ord("v") == t["fovmap"][pos]:
  68             return True
  69
  70     def good_attack_target(v):
  71         eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
  72         type = world_db["ThingTypes"][v["T_TYPE"]]
  73         type_corpse = world_db["ThingTypes"][type["TT_CORPSE_ID"]]
  74         if t["T_LIFEPOINTS"] > type["TT_LIFEPOINTS"] \
  75         and type_corpse["TT_TOOL"] == "food" \
  76         and type_corpse["TT_TOOLPOWER"] > eat_cost:
  77             return True
  78         return False
  79
  80     def good_flee_target(m):
  81         own_corpse_id = world_db["ThingTypes"][t["T_TYPE"]]["TT_CORPSE_ID"]
  82         corpse_type = world_db["ThingTypes"][own_corpse_id]
  83         targetness = 0 if corpse_type["TT_TOOL"] != "food" \
  84                        else corpse_type["TT_TOOLPOWER"]
  85         type = world_db["ThingTypes"][m["T_TYPE"]]
  86         if t["T_LIFEPOINTS"] < type["TT_LIFEPOINTS"] \
  87         and targetness > eat_vs_hunger_threshold(m["T_TYPE"]):
  88             return True
  89         return False
  90
  91     def seeing_thing():
  92         if t["fovmap"] and "a" == filter:
  93             for id in world_db["Things"]:
  94                 if animate_in_fov(world_db["Things"][id]):
  95                     if good_attack_target(world_db["Things"][id]):
  96                         return True
  97         elif t["fovmap"] and "f" == filter:
  98             for id in world_db["Things"]:
  99                 if animate_in_fov(world_db["Things"][id]):
 100                     if good_flee_target(world_db["Things"][id]):
 101                         return True
 102         elif t["T_MEMMAP"] and "c" == filter:
 103             eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
 104             for mt in t["T_MEMTHING"]:
 105                 if ' ' != chr(t["T_MEMMAP"][(mt[1] * world_db["MAP_LENGTH"])
 106                                             + mt[2]]) \
 107                    and world_db["ThingTypes"][mt[0]]["TT_TOOL"] == "food" \
 108                    and world_db["ThingTypes"][mt[0]]["TT_TOOLPOWER"] \
 109                        > eat_cost:
 110                     return True
 111         return False
 112
 113     def set_cells_passable_on_memmap_to_65534_on_scoremap():
 114         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
 115         # ord_dot = ord(".")
 116         # memmap = t["T_MEMMAP"]
 117         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
 118         #            if ord_dot == memmap[i]]:
 119         #     set_map_score(i, 65534) # i.e. 65535-1
 120         map = c_pointer_to_bytearray(t["T_MEMMAP"])
 121         if libpr.set_cells_passable_on_memmap_to_65534_on_scoremap(map):
 122             raise RuntimeError("No score map allocated for set_cells_passable"
 123                                "_on_memmap_to_65534_on_scoremap().")
 124
 125     def init_score_map():
 126         test = libpr.init_score_map()
 127         if test:
 128             raise RuntimeError("Malloc error in init_score_map().")
 129         ord_v = ord("v")
 130         ord_blank = ord(" ")
 131         set_cells_passable_on_memmap_to_65534_on_scoremap()
 132         if "a" == filter:
 133             for id in world_db["Things"]:
 134                 if animate_in_fov(world_db["Things"][id]) \
 135                 and good_attack_target(world_db["Things"][id]):
 136                     set_map_score_at_thingpos(id, 0)
 137         elif "f" == filter:
 138             for id in world_db["Things"]:
 139                 if animate_in_fov(world_db["Things"][id]) \
 140                 and good_flee_target(world_db["Things"][id]):
 141                     set_map_score_at_thingpos(id, 0)
 142         elif "c" == filter:
 143             eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
 144             for mt in [mt for mt in t["T_MEMTHING"]
 145                        if ord_blank != t["T_MEMMAP"][mt[1]
 146                                                      * world_db["MAP_LENGTH"]
 147                                                      + mt[2]]
 148                        if world_db["ThingTypes"][mt[0]]["TT_TOOL"] == "food"
 149                        if world_db["ThingTypes"][mt[0]]["TT_TOOLPOWER"]
 150                            > eat_cost]:
 151                 set_map_score(mt[1] * world_db["MAP_LENGTH"] + mt[2], 0)
 152         elif "s" == filter:
 153             zero_score_map_where_char_on_memdepthmap(mem_depth_c[0])
 154         if "a" != filter:
 155             for id in world_db["Things"]:
 156                 if animate_in_fov(world_db["Things"][id]):
 157                     if "f" == filter:
 158                         pos = world_db["Things"][id]["T_POSY"] \
 159                               * world_db["MAP_LENGTH"] \
 160                               + world_db["Things"][id]["T_POSX"]
 161                         if 0 == get_map_score(pos):
 162                             continue
 163                     set_map_score_at_thingpos(id, 65535)
 164
 165     def rand_target_dir(neighbors, cmp, dirs):
 166         candidates = []
 167         n_candidates = 0
 168         for i in range(len(dirs)):
 169             if cmp == neighbors[i]:
 170                 candidates.append(dirs[i])
 171                 n_candidates += 1
 172         return candidates[rand.next() % n_candidates] if n_candidates else 0
 173
 174     def get_neighbor_scores(dirs, eye_pos):
 175         scores = []
 176         if libpr.ready_neighbor_scores(eye_pos):
 177             raise RuntimeError("No score map allocated for " +
 178                                "ready_neighbor_scores.()")
 179         for i in range(len(dirs)):
 180             scores.append(libpr.get_neighbor_score(i))
 181         return scores
 182
 183     def get_dir_from_neighbors():
 184         import math
 185         dir_to_target = False
 186         dirs = "edcxsw"
 187         eye_pos = t["T_POSY"] * world_db["MAP_LENGTH"] + t["T_POSX"]
 188         neighbors = get_neighbor_scores(dirs, eye_pos)
 189         minmax_start = 0 if "f" == filter else 65535 - 1
 190         minmax_neighbor = minmax_start
 191         for i in range(len(dirs)):
 192             if ("f" == filter and get_map_score(eye_pos) < neighbors[i] and
 193                 minmax_neighbor < neighbors[i] and 65535 != neighbors[i]) \
 194                or ("f" != filter and minmax_neighbor > neighbors[i]):
 195                 minmax_neighbor = neighbors[i]
 196         if minmax_neighbor != minmax_start:
 197             dir_to_target = rand_target_dir(neighbors, minmax_neighbor, dirs)
 198         if "f" == filter:
 199             distance = get_map_score(eye_pos)
 200             fear_distance = world_db["MAP_LENGTH"]
 201             if t["T_SATIATION"] < 0 and math.sqrt(-t["T_SATIATION"]) > 0:
 202                 fear_distance = fear_distance / math.sqrt(-t["T_SATIATION"])
 203             attack_distance = 1
 204             if not dir_to_target:
 205                 if attack_distance >= distance:
 206                     dir_to_target = rand_target_dir(neighbors,
 207                                                     distance - 1, dirs)
 208                 elif fear_distance >= distance:
 209                     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 210                                       if
 211                                       world_db["ThingActions"][id]["TA_NAME"]
 212                                       == "wait"][0]
 213                     return 1
 214             elif dir_to_target and fear_distance < distance:
 215                 dir_to_target = 0
 216         return dir_to_target
 217
 218     dir_to_target = False
 219     mem_depth_c = b' '
 220     run_i = 9 + 1 if "s" == filter else 1
 221     while run_i and not dir_to_target and ("s" == filter or seeing_thing()):
 222         run_i -= 1
 223         init_score_map()
 224         mem_depth_c = b'9' if b' ' == mem_depth_c \
 225             else bytes([mem_depth_c[0] - 1])
 226         if libpr.dijkstra_map():
 227             raise RuntimeError("No score map allocated for dijkstra_map().")
 228         dir_to_target = get_dir_from_neighbors()
 229         libpr.free_score_map()
 230         if dir_to_target and str == type(dir_to_target):
 231             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 232                               if world_db["ThingActions"][id]["TA_NAME"]
 233                               == "move"][0]
 234             t["T_ARGUMENT"] = ord(dir_to_target)
 235     return dir_to_target
 236
 237
 238 def standing_on_food(t):
 239     """Return True/False whether t is standing on healthy consumable."""
 240     eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
 241     for id in [id for id in world_db["Things"] if world_db["Things"][id] != t
 242                if not world_db["Things"][id]["carried"]
 243                if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
 244                if world_db["Things"][id]["T_POSX"] == t["T_POSX"]
 245                if world_db["ThingTypes"][world_db["Things"][id]["T_TYPE"]]
 246                   ["TT_TOOL"] == "food"
 247                if world_db["ThingTypes"][world_db["Things"][id]["T_TYPE"]]
 248                   ["TT_TOOLPOWER"] > eat_cost]:
 249         return True
 250     return False
 251
 252
 253 def get_inventory_slot_to_consume(t):
 254     """Return invent. slot of healthiest consumable(if any healthy),else -1."""
 255     cmp_food = -1
 256     selection = -1
 257     i = 0
 258     eat_cost = eat_vs_hunger_threshold(t["T_TYPE"])
 259     for id in t["T_CARRIES"]:
 260         type = world_db["Things"][id]["T_TYPE"]
 261         if world_db["ThingTypes"][type]["TT_TOOL"] == "food" \
 262            and world_db["ThingTypes"][type]["TT_TOOLPOWER"]:
 263             nutvalue = world_db["ThingTypes"][type]["TT_TOOLPOWER"]
 264             tmp_cmp = abs(t["T_SATIATION"] + nutvalue - eat_cost)
 265             if (cmp_food < 0 and tmp_cmp < abs(t["T_SATIATION"])) \
 266             or tmp_cmp < cmp_food:
 267                 cmp_food = tmp_cmp
 268                 selection = i
 269         i += 1
 270     return selection
 271
 272
 273 def ai(t):
 274     """Determine next command/argment for actor t via AI algorithms."""
 275     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 276                       if world_db["ThingActions"][id]["TA_NAME"] == "wait"][0]
 277     if get_dir_to_target(t, "f"):
 278         return
 279     sel = get_inventory_slot_to_consume(t)
 280     if -1 != sel:
 281         t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 282                           if world_db["ThingActions"][id]["TA_NAME"]
 283                              == "use"][0]
 284         t["T_ARGUMENT"] = sel
 285     elif standing_on_food(t):
 286             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 287                               if world_db["ThingActions"][id]["TA_NAME"]
 288                               == "pick_up"][0]
 289     else:
 290         going_to_known_food_spot = get_dir_to_target(t, "c")
 291         if not going_to_known_food_spot:
 292             aiming_for_walking_food = get_dir_to_target(t, "a")
 293             if not aiming_for_walking_food:
 294                 get_dir_to_target(t, "s")