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