Split into multiple modules

board_possibilities.py

@@ -0,0 +1,122 @@
+"""Contains function to iterate different kinds of possible actions"""
+from typing import Iterator
+import board
+import board_actions
+
+
+def possible_huakill_action(search_board: board.Board) -> Iterator[board_actions.HuaKillAction]:
+    """Check if the flowercard can be eliminated"""
+    for index, stack in enumerate(search_board.field):
+        if stack[-1] == board.SpecialCard.Hua:
+            yield board_actions.HuaKillAction(source_field_id=index)
+
+
+def possible_dragonkill_actions(
+        search_board: board.Board) -> Iterator[board_actions.DragonKillAction]:
+    """Enumerate all possible dragon kills"""
+    possible_dragons = [board.SpecialCard.Zhong,
+                        board.SpecialCard.Fa, board.SpecialCard.Bai]
+    if not any(x == board.BunkerStatus.Empty for x in search_board.bunker):
+        new_possible_dragons = []
+        for dragon in possible_dragons:
+            if any(x == dragon for x in search_board.bunker):
+                new_possible_dragons.append(dragon)
+        possible_dragons = new_possible_dragons
+
+    for dragon in possible_dragons:
+        bunker_dragons = [i for i, d in enumerate(
+            search_board.bunker) if d == dragon]
+        field_dragons = [i for i, f in enumerate(
+            search_board.field) if f if f[-1] == dragon]
+        if len(bunker_dragons) + len(field_dragons) != 4:
+            continue
+        destination_bunker_id = 0
+        if bunker_dragons:
+            destination_bunker_id = bunker_dragons[0]
+        else:
+            destination_bunker_id = [
+                i for i, x in enumerate(search_board.bunker) if x == board.BunkerStatus.Empty][0]
+
+        source_stacks = [(board.Position.Bunker, i) for i in bunker_dragons]
+        source_stacks.extend([(board.Position.Field, i)
+                              for i in field_dragons])
+
+        yield board_actions.DragonKillAction(dragon=dragon, source_stacks=source_stacks,
+                                             destination_bunker_id=destination_bunker_id)
+
+
+def possible_bunkerize_actions(search_board: board.Board) -> Iterator[board_actions.MoveAction]:
+    """Enumerates all possible card moves from the field to the bunker"""
+    open_bunker_list = [i for i, x in enumerate(
+        search_board.bunker) if x == board.BunkerStatus.Empty]
+
+    if not open_bunker_list:
+        return
+
+    open_bunker = open_bunker_list[0]
+    for index, stack in enumerate(search_board.field):
+        if not stack:
+            continue
+        yield board_actions.MoveAction(card=stack[-1],
+                                       source_position=board.Position.Field,
+                                       source_id=index,
+                                       destination_position=board.Position.Bunker,
+                                       destination_id=open_bunker)
+
+
+def possible_debunkerize_actions(search_board: board.Board) -> Iterator[board_actions.MoveAction]:
+    """Enumerates all possible card moves from the bunker to the field"""
+    bunker_number_cards = [(i, x) for i, x in enumerate(
+        search_board.bunker) if isinstance(x, board.NumberCard)]
+    for index, card in bunker_number_cards:
+        for other_index, other_stack in enumerate(search_board.field):
+            if not other_stack:
+                continue
+            if not isinstance(other_stack[-1], board.NumberCard):
+                continue
+            if other_stack[-1].suit == card.suit:
+                continue
+            if other_stack[-1].number != card.number + 1:
+                continue
+            yield board_actions.MoveAction(card=card,
+                                           source_position=board.Position.Bunker,
+                                           source_id=index,
+                                           destination_position=board.Position.Field,
+                                           destination_id=other_index)
+
+
+def possible_goal_move_actions(search_board: board.Board) -> Iterator[board_actions.MoveAction]:
+    """Enumerates all possible moves from anywhere to the goal"""
+    #TODO
+
+
+def possible_field_move_actions(search_board: board.Board) -> Iterator[board_actions.MoveAction]:
+    """Enumerate all possible move actions from one field stack to another field stack"""
+    for index, stack in enumerate(search_board.field):
+        if not stack:
+            continue
+        if not isinstance(stack[-1], board.NumberCard):
+            continue
+        for other_index, other_stack in enumerate(search_board.field):
+            if not other_stack:
+                continue
+            if not isinstance(other_stack[-1], board.NumberCard):
+                continue
+            if other_stack[-1].suit == stack[-1].suit:
+                continue
+            if other_stack[-1].number != stack[-1].number + 1:
+                continue
+            yield board_actions.MoveAction(card=stack[-1],
+                                           source_position=board.Position.Field,
+                                           source_id=index,
+                                           destination_position=board.Position.Field,
+                                           destination_id=other_index)
+
+
+def possible_actions(search_board: board.Board) -> Iterator[board_actions.Action]:
+    """Enumerate all possible actions on the current search_board"""
+    yield from possible_huakill_action(search_board)
+    yield from possible_dragonkill_actions(search_board)
+    yield from possible_debunkerize_actions(search_board)
+    yield from possible_field_move_actions(search_board)
+    yield from possible_bunkerize_actions(search_board)