From 6d973c75797e4d3efef34d705369761140f3624b Mon Sep 17 00:00:00 2001
From: kamoshi <18511281+kamoshi@users.noreply.github.com>
Date: Thu, 17 Dec 2020 15:29:32 +0100
Subject: [PATCH] Create day17.py

---
 2020/Python/day17.py | 123 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 123 insertions(+)
 create mode 100644 2020/Python/day17.py

diff --git a/2020/Python/day17.py b/2020/Python/day17.py
new file mode 100644
index 0000000..9103533
--- /dev/null
+++ b/2020/Python/day17.py
@@ -0,0 +1,123 @@
+
+class Space:
+    def __init__(self, row: int, col: int, height: int):
+        self.space: list[list[list[bool]]] = []
+        self.row = row
+        self.col = col
+        self.height = height
+        self._offset_row = 0
+        self._offset_col = 0
+        self._offset_h = 0
+
+        for h in range(self.height):
+            level_l = []
+            for row in range(self.row):
+                row_l = []
+                for col in range(self.col):
+                    row_l.append(False)
+                level_l.append(row_l)
+            self.space.append(level_l)
+
+    # Loads data with a given offset
+    def load_data(self, data: list[list[bool]], offset_row: int, offset_col: int, offset_h: int) -> None:
+        self._offset_row = offset_row
+        self._offset_col = offset_col
+        self._offset_h = offset_h
+
+        for row in range(self._offset_row, len(data) + self._offset_row):
+            for col in range(self._offset_col, len(data[0]) + self._offset_col):
+                self.space[self._offset_h][row][col] = data[row-self._offset_row][col-self._offset_col]
+
+    # Get activation value from absolute x,y,z, False if outside bounds
+    def get(self, row: int, col: int, h: int) -> bool:
+        if 0 <= h < self.height and 0 <= row < self.row and 0 <= col < self.col:
+            return self.space[h][row][col]
+        return False
+
+    # Set activation value for absolute x,y,z, crash if outside bounds
+    def set(self, row: int, col: int, h: int, value: bool) -> None:
+        self.space[h][row][col] = value
+
+    # Get activation value from offset x,y,z, False if outside bounds
+    def get_o(self, row: int, col: int, h: int):
+        return self.get(row+self._offset_row, col+self._offset_col, h+self._offset_h)
+
+    # Set activation value for offset x,y,z, crash if outside bounds
+    def set_o(self, row: int, col: int, h: int, value: bool) -> None:
+        self.set(row+self._offset_row, col+self._offset_col, h+self._offset_h, value)
+
+    # Counts activated neighbours for a given absolute position
+    def count_neighbours(self, row: int, col: int, h: int) -> int:
+        checked = [(-1,-1,-1),(-1,-1,0),(-1,-1,1),(-1,0,-1),(-1,0,0),(-1,0,1),(-1,1,-1),(-1,1,0),(-1,1,1),(0,-1,-1),(0,-1,0),(0,-1,1),(0,0,-1),(0,0,1),(0,1,-1),(0,1,0),(0,1,1),(1,-1,-1),(1,-1,0),(1,-1,1),(1,0,-1),(1,0,0),(1,0,1),(1,1,-1),(1,1,0),(1,1,1)]
+
+        count = 0
+        for col_o, row_o, h_o in checked:
+            if self.get(row=row+row_o, col=col+col_o, h=h+h_o):
+                count += 1
+
+        return count
+
+    # Counts activated neighbours for a given offset position
+    def count_neighbours_o(self, row: int, col: int, h: int) -> int:
+        return self.count_neighbours(row+self._offset_row, col+self._offset_col, h+self._offset_h)
+
+    # Get the next state of the space
+    def next(self) -> 'Space':
+        next_space: Space = Space(self.col, self.row, self.row)
+        for h in range(self.height):
+            for r in range(self.row):
+                for c in range(self.col):
+                    active_ns = self.count_neighbours(r, c, h)
+                    active = self.get(r, c, h)
+                    if active:
+                        next_space.set(r, c, h, active_ns in [2, 3])
+                    else:
+                        next_space.set(r, c, h, active_ns == 3)
+
+        return next_space
+
+    # Count all activated values
+    def count_activated(self) -> int:
+        counted = 0
+
+        for level in self.space:
+            for column in level:
+                counted += sum(column)
+
+        return counted
+
+    # Print at level
+    def print_level(self, level: int):
+        level_grid = self.space[level]
+        for row in level_grid:
+            print(''.join(['#' if x else '.' for x in row]))
+
+
+def parse_data() -> list[list[bool]]:
+    input_data = []
+    with open("input.txt") as file:
+        for line in file:
+            input_data.append([True if x == '#' else False for x in line.rstrip()])
+
+    return input_data
+
+
+def generate_space(data: list[list[bool]], max_turns: int) -> 'Space':
+    size_row = len(data[0]) + (max_turns * 2)
+    size_col = len(data) + (max_turns * 2)
+    space: Space = Space(row=size_row, col=size_col, height=(max_turns * 2) + 1)
+    space.load_data(data=data, offset_col=max_turns, offset_row=max_turns, offset_h=max_turns)
+    return space
+
+
+def solve_p1(data: list[list[bool]]) -> int:
+    turns = 6
+    space: Space = generate_space(data, max_turns=turns)
+    for i in range(turns):
+        space = space.next()
+    return space.count_activated()
+
+
+DATA = parse_data()
+print(solve_p1(DATA))
+