8 files changed, 120 insertions, 56 deletions

diff --git a/aoc/datastructures.py b/aoc/datastructures.py
new file mode 100644
index 0000000..c49f564
--- /dev/null
+++ b/aoc/datastructures.py
@@ -0,0 +1,27 @@
+# -*- coding: utf-8 -*-
+from collections import namedtuple
+
+
+class Coordinate(namedtuple("Coordinate", ["x", "y"])):
+    def __sub__(self, other: "Coordinate"):
+        return Coordinate(self.x - other.x, self.y - other.y)
+
+    def __add__(self, other: "Coordinate"):
+        return Coordinate(self.x + other.x, self.y + other.y)
+
+    def manhattan_distance(self, other: "Coordinate"):
+        return abs(self.x - other.x) + abs(self.y - other.y)
+
+    @property
+    def polarity_x(self):
+        try:
+            return abs(self.x) / self.x
+        except ZeroDivisionError:
+            return 0
+
+    @property
+    def polarity_y(self):
+        try:
+            return abs(self.y) / self.y
+        except ZeroDivisionError:
+            return 0
diff --git a/aoc/decorators.py b/aoc/decorators.py
new file mode 100644
index 0000000..a31993a
--- /dev/null
+++ b/aoc/decorators.py
@@ -0,0 +1,17 @@
+# -*- coding: utf-8 -*-
+from functools import wraps
+from typing import Iterator, TypeVar, Callable
+
+T = TypeVar("T")
+
+
+def infinite_generator(func: Callable[[...], Iterator[T]]):
+    @wraps(func)
+    def wrapper(*args, **kwargs):
+        items = list(func(*args, **kwargs))
+
+        while True:
+            for item in items:
+                yield item
+
+    return wrapper
diff --git a/day14/__init__.py b/day14/__init__.py
index 44107de..8869c79 100644
--- a/day14/__init__.py
+++ b/day14/__init__.py
@@ -4,8 +4,7 @@ from functools import lru_cache
 from typing import Tuple, Iterator, Set, Any, Optional
 
 from aoc import BaseAssignment
-
-Coordinate = Tuple[int, int]
+from aoc.datastructures import Coordinate
 
 
 class Assignment(BaseAssignment, ABC):
diff --git a/day15/__init__.py b/day15/__init__.py
index 5885f37..38bef35 100644
--- a/day15/__init__.py
+++ b/day15/__init__.py
@@ -1,17 +1,12 @@
 # -*- coding: utf-8 -*-
 import re
 from abc import ABC
-from collections import namedtuple
 from dataclasses import dataclass, field
-from typing import Tuple, Iterator, Any, Set, Union
-from typing import Tuple, Iterator, Any, Set, List
+from typing import Union
+from typing import Tuple, Iterator, Set, List
 
 from aoc import BaseAssignment
-
-
-class Coordinate(namedtuple("Coordinate", ["x", "y"])):
-    def distance(self, other: "Coordinate"):
-        return abs(self.x - other.x) + abs(self.y - other.y)
+from aoc.datastructures import Coordinate
 
 
 @dataclass
@@ -24,10 +19,10 @@ class Sensor:
         return hash(self.coordinate)
 
     def __post_init__(self):
-        self.radius = self.coordinate.distance(self.nearest)
+        self.radius = self.coordinate.manhattan_distance(self.nearest)
 
     def within_radius(self, coordinate: Coordinate) -> bool:
-        distance = self.coordinate.distance(coordinate)
+        distance = self.coordinate.manhattan_distance(coordinate)
         return distance <= self.radius
 
     def x_coordinates_within_radius_at(self, y: int, map: "Map") -> Union[range, list]:
diff --git a/day17/__init__.py b/day17/__init__.py
new file mode 100644
index 0000000..41b25dc
--- /dev/null
+++ b/day17/__init__.py
@@ -0,0 +1,42 @@
+# -*- coding: utf-8 -*-
+from abc import ABC
+from dataclasses import dataclass
+from typing import Iterator
+
+from aoc import BaseAssignment
+from aoc.datastructures import Coordinate
+from aoc.decorators import infinite_generator
+
+
+@dataclass
+class Block:
+    origin: Coordinate
+
+
+class Assignment(BaseAssignment[int, str], ABC):
+    @infinite_generator
+    def infinite_moves(self, item: str) -> str:
+        return item
+
+    def infinite_blocks(self):
+        pass
+
+
+class AssignmentOne(Assignment):
+    example_result = 1
+
+    def run(self, input: Iterator[str]):
+        i = 0
+
+        moves = self.infinite_moves(input)
+
+        for move in self.infinite_moves(next(input)):
+            i += 1
+            print(move)
+
+            if i == 100:
+                break
+
+
+class AssignmentTwo(Assignment):
+    pass
diff --git a/day17/example.txt b/day17/example.txt
new file mode 100644
index 0000000..97a1aa1
--- /dev/null
+++ b/day17/example.txt
@@ -0,0 +1 @@
+>>><<><>><<<>><>>><<<>>><<<><<<>><>><<>>
diff --git a/day17/input.txt b/day17/input.txt
new file mode 100644
index 0000000..3edbacf
--- /dev/null
+++ b/day17/input.txt
@@ -0,0 +1 @@
+>><<<<><><<>><>><<><<<>><>><<>><>><<>>><<<<>>>><<<<><>><><<>>>><><<<>>>><>><<><<<<>>><<<<>>>><<<>>><>>><>>>><<>>><<<>>><<<>><<>><<<>>><>>>><<<>><<<>>>><>>><><<>><<<><>>>><<<>>>><<>><<>>>><>><<<><<><<<<><<><<<>>>><<<>><<<<>><<<>><<<>><<<<>>>><<<>>>><<<>>>><<>>>><<<>><<<<><<<><>>>><<>>><<<<>><><>>>><<<<><<<<>>><<<>>><<<>><<<<>>>><<<>>>><<<<>>>><<<><<<>><<<>>><<<>>>><><<>><<><<<><>>><<<<>><<<>>><<>>>><><>>><>>>><>><>>>><<<<><<>>><<<<>><<<><<<<>>><<>>>><>>><<<>>><>><<>>>><<<><>>>><<>>><>><><<<<><<<>><<<<>><<<<><>>>><<><<>>><<>><>><>>><<><>>><<<<>>><>>>><<<>><>>>><<<<>>>><>>><>><>>><<>>><<>>><<<<>>>><<<<><<<<>><<>>><><<<><>><>>><<<>>><<<>><<>>><<<><<>>>><<<>>><<<>><><<>>><<<>><<<>><<<<>><><<>><<<<><<>>>><<<>>>><<<<><>>>><><<<>>>><<<<>>><>><<>><<<<><<<<>>>><<<>>><<<>>><><<>>><<>>>><<<>>><<>>>><<<>>><<<<><<<><<><<>><>>>><><<<>>>><<<<>>><<<>><<<<>>>><<>><<>>><>>><<>><>><<<>>><>>>><<>>>><<<>>>><>>>><<<>><<<<><<<<>>><>>>><><>>>><<<<><<<<><>><<<>><<<>>><<<<><<<><<<>>>><<><<>>>><>>>><<<>>>><>>><<<<>>><><<>>><<<>>><<>><>><>>>><<><<<<><<>>><><<<<>>>><><>><<>><<<><<<<>><<<<>><<<>>>><><>><<>>><<>>><<<<>>><<>>><<>><>>>><<<<>>><<<<><<<<>>>><<<>>><<>>>><<<<><>>><<<<><<<<>>><>>><<<<><>><<<<>>><<<<>>><<<<>>><<<>>><>>>><<<<>>><><<<<><>>>><<<<>><>><<<>>>><<<><>><<>><>>>><<><<<>>>><>><<>>>><<<>>><<<>>>><<>>><<>><<<>>>><<<><<<><<<>><<<>>><>>><<<<>>><<>><>>><<<<>>><>><<<>>><>><<<<>>>><><<<><<>>><>>><>>>><<>><<<<>>><<<><<<<>>>><><>>>><<<<>>><<<<><<><<<><<<<><<<<>>><>>><<>>><<<<><<><<<><<<<><<<<><>>><<<>>>><<<>>><>><>><<<<>>>><<<<>>>><>>><<>>><<>>>><<<<>>>><<<<>><<<<>><<><<<<>>>><<>>>><<>><<<<><>>>><<<<>>><<>>><<>>><>><>>><>>><<<<>>><<<<>><<<<>><<<<>><<<>><<>><>><>>><<<><<><<>>>><>>><<<>>><<<>>><<>>>><><<<<>>>><<>>><<<<>>><><<>>>><<>>><<>>>><<>>>><<><>>><<<<>>>><<>>>><<<<><<<>>><<<>>>><<<<>>><<<>><<<<>>><<<>>><<<>><<<<><<<<><>>><>>><<<<><<<<><<<<><<<<>>><<<<>><<>><>><>>><<<<>>>><>>>><<<>><>>><>>>><<<>><<>>>><<<<>><<<><<>><<<>><><><<<><<<>>><>>>><<>><>>><>>>><>>>><<<<>>>><<<<>>>><<<<>>><<>><<>>><<>><<><>><<<>>>><>>><>>><<<>><><<<<>>><<<><<<>>>><<<<>>><<<>>>><<<><<<<>>>><<>>><<<<><>>><<><>>>><<<<><<><<<>><<<<>>>><<>>><<>><<<>><<<>>>><>><>>><<<>><<<<>>>><<<<>>>><>>>><<>><<<<><<>><<>>><<<>><<<<><<<>><<<<>>>><<<<>><<>><<<>>><<>><><>>>><<<>><<<>>><<<<>>><<<<>>><<<<><<<><<<><<<<>>>><<>><<<<>>>><<>>>><<<>>><<><>>><>>>><<<<><<<><<>>>><<<>>>><<<<>><><<<>>><<<<>>><<>><<<>>>><<<>>><<<<><<>>>><<<>>>><<<<><<<<>>>><<<<>><>><<<>>>><>><<>>>><><<<><<<<>><<>><<<<>>>><<>><>>><<>>>><<<>>>><<<<>><<<>><<<<>><>><<>>>><>>><>>><<>>>><<<<>>>><<>>>><<<>><<<<>>>><<<>>><>>>><<<<>>>><<>>>><<<<>><<<><<><<<<>>>><<>>><<><>>>><>><>><>><<<><<<<>><>>>><<<><>>>><<>><<<<><<>>>><<><<<>><<<><<<>>>><<<<><>>>><<<>>>><<<>>><><>><>>><<<>>><<>>><<><<<>>>><>><<<<>>>><>>>><<>>>><<<>>><<<>>>><><><<<<>><<<<>>><><<>><<>>><><<<<><>>><>>>><<<>>><<<<><<<>><<<<>><<<>><<<<><<<><<<<>><<<<>><>>>><<<<>>><>>><>><>>>><<<>><<<>>><<<<>><<<>>>><<<<>><<<>>>><<<>>>><<<>><>><<<>>>><>><<<<>>>><<<<><<>>>><<<><<<>>>><<><<><<>>><<<<><>>>><><<<<>>>><<>>>><<<>>><<><<<<><<>><<>><<<<>>>><<<<>>><>>><<>>><<><<>><<<<><<>>><<<<>><<<>><<<>><><<>>>><<<><<><<<><<<<>>><>>><><<>><<<<>>><>>>><<<<>>><>><<<<>><<<>><<<>>><<<><<>>><<<><<<<>><<<<>>><<<<>>><<<>>><<<><<<<><>>>><<<<>><><<<<>>><<<<>>>><<<><<<<><<><>><<<>><<>>>><><<>>><<<>>>><>>><<<><<<<><<<>><<<<>>><<>><<<>>><<<>>><><<<<><>><<>>>><<>><<<>>><>>>><<<>><<<>>>><<><<<<>><><<<<>>>><<<<>>><<<>><<>><<<>>><<<<>>><<<>>>><>>><<<<><<<>><<><<<>>><<<<>>>><><<>>>><>>>><<<>>>><>>>><<>><<>><>>>><<<>>><<<>>><<<>><>><>>><<<<><>>>><<<><<<>>>><<>>><<<<>>><<<>>><>>>><<<<>>><<>>><<>>>><<<<>>>><>>>><<<>>>><><><<><<>>>><<<>>>><>>>><<<>>><<<<><>>>><>><>><>>><<<<><<><><<<><<>>>><<><<>>><<<<>>>><<<<>>>><<<>><>>>><<<>><<>><<>><>>>><<<>>><<<<><>><<><<<<>>>><<<<>><<<>><><<<<><<<>>><<>>>><<<<>><>>><<<>><<>>><>>><<>>><>>>><<><<<<><>>>><<<>><<<<>>>><<>>><>>>><>>>><<>>><<>><><<>>><<>>><<<>><<<<>><<<>>><>>><<<><>>><<<>>>><<><<<<>><<<<>>>><>>>><<<<>><<>>>><<<>>><<><>><>><<<>>><<<<>><<<<><<>>>><<>><<<>>>><<<<><<<<>>>><<<<>>><<<>>><<>>>><<<<>>><<>><<>><>>>><<>>>><<<><<>>>><<><<>>>><<>>><<>>>><><<<><<<>><<>><<<<>><>>>><<>>><<>><<<<><<><<<><>>>><<<<>>>><<<>>><<<>>>><<<<><<<><<>><<>><<<>>>><>>><<>>><><<>><<<><<<>>><<<><<<>>>><>><<>><<<<>>>><><>>><<<<>>>><>>>><<<>>><>><<<>>><<>>>><<<<>><<<<>>><<<><>>>><>>>><>><<<<>>><><<<<>>><<<<>>>><>><<<>>><<<><>>>><>>><<<>>>><<>><<>><<<>>>><<><><>><<>>><<<><<<><><<<<><<>>>><<<>><<<><<<<>>>><<>><<<<><<<>>>><<<<>>><<<<>>>><<<>><<><>>><<>><<<><<<>><<>>>><<<>>>><>>><<>>><<<>>>><<>>><<<>><<><<>><><<>>><<>>>><<<<>><><<>>>><<>>>><>>>><>><>><<<<>>><>>><<<><>>><<><<><<<><>>><<<><<>>>><<<<>>><<<<>>><<<>><<>>>><<<<>>>><><<<><>>><>>><<>>><<<<>><>><<<>>><<<>><><><<<<>>><>>>><><<>><<<>>>><>>><<<<><<<>><>>>><<><<<<>>><<<<>>>><><<<><<<>>>><><<<>>><<<<>>>><>>>><<<<><><<<<>>>><<>>><>>><><<>>>><<<<>>>><<<<>>>><<<<>><>>>><<<>>><<>>><<<<>><<<><>><<>>><>>><<<>>><<<<>>><<><<<>><<<>><<<<>><<<>><>>><<><<<<>><<>>><<<<><<>>><>>>><>><<<<>>><>>>><><<>>><><>>><<<><>>>><<<>>><<><><<<><<<<>>><<>>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