Initial commit, with rules 0.5 and basic bots

tests/test_movement.py

@@ -0,0 +1,50 @@
+from scripted import fixture_board
+
+from dojo.board import Board, Pos, edge
+from dojo.movement import walks
+
+BOARD = fixture_board()
+
+
+def test_walks_have_exact_length_and_never_repeat_a_square() -> None:
+    start = Pos(4, 4)
+
+    paths = walks(BOARD, start, 4, {start}, can_enter_dojo=False)
+
+    assert paths
+    for path in paths:
+        assert len(path) == 4
+        assert len({start, *path}) == 5
+        for a, b in zip((start, *path), path, strict=False):
+            assert b in set(BOARD.neighbours(a))
+
+
+def test_visited_squares_are_never_entered() -> None:
+    start = Pos(4, 4)
+    visited = {start, Pos(4, 5), Pos(3, 4)}
+
+    paths = walks(BOARD, start, 3, visited, can_enter_dojo=False)
+
+    assert all(not visited & set(path) for path in paths)
+
+
+def test_dojo_is_a_wall_unless_it_may_be_entered() -> None:
+    start = Pos(4, 7)
+
+    closed = walks(BOARD, start, 5, {start}, can_enter_dojo=False)
+    opened = walks(BOARD, start, 5, {start}, can_enter_dojo=True)
+
+    assert not any(BOARD.dojo & set(path) for path in closed)
+    into_dojo = [path for path in opened if path[-1] in BOARD.dojo]
+    assert (Pos(5, 7), Pos(6, 7)) in into_dojo
+    assert all(cell not in BOARD.dojo for path in into_dojo for cell in path[:-1])
+    assert set(opened) - set(into_dojo) == set(closed)
+
+
+def test_boxed_in_pawn_moves_as_far_as_possible() -> None:
+    walls = frozenset(edge(Pos(0, c), Pos(1, c)) for c in range(3))
+    corridor = Board(cells=((".",) * 3,) * 3, walls=walls, tunnels={})
+
+    paths = walks(corridor, Pos(0, 0), 5, {Pos(0, 0)}, can_enter_dojo=False)
+
+    assert paths == [(Pos(0, 1), Pos(0, 2))]