From 96f481f9c24bffd9f9ed6df1487c43e58ad0fa22 Mon Sep 17 00:00:00 2001
From: Ben Charlton <ben@spod.cx>
Date: Sat, 12 Dec 2020 22:22:45 +0000
Subject: [PATCH] day 12
---
12/12-1.py | 57 +++++++++++++++++++++++++++++++++++++++++++++++++
12/12-2.py | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 119 insertions(+)
create mode 100644 12/12-1.py
create mode 100644 12/12-2.py
diff --git a/12/12-1.py b/12/12-1.py
new file mode 100644
index 0000000..ab6147a
--- /dev/null
+++ b/12/12-1.py
@@ -0,0 +1,57 @@
+#!/usr/bin/python3
+
+import sys
+
+class Ship:
+
+ def __init__(self):
+ self.facing = 'E'
+ self.x = 0
+ self.y = 0
+
+ self.moves = {'E': [1,0],
+ 'S': [0,-1],
+ 'W': [-1,0],
+ 'N': [0,1]}
+
+ self.turns = {'E': ['N','S','W'],
+ 'S': ['E','W','N'],
+ 'W': ['S','N','E'],
+ 'N': ['W','E','S']}
+
+ def rotate(self, direction, degrees):
+ if degrees == 180:
+ self.facing = self.turns[self.facing][2]
+ elif degrees == 90 and direction == 'L':
+ self.facing = self.turns[self.facing][0]
+ elif degrees == 90 and direction == 'R':
+ self.facing = self.turns[self.facing][1]
+ elif degrees == 270 and direction == 'L':
+ self.facing = self.turns[self.facing][1]
+ elif degrees == 270 and direction == 'R':
+ self.facing = self.turns[self.facing][0]
+ else:
+ raise Exception("Invalid Turn")
+
+ def move(self, direction, num):
+ if direction == 'F':
+ self.x = self.x + (self.moves[self.facing][0] * num)
+ self.y = self.y + (self.moves[self.facing][1] * num)
+ else:
+ self.x = self.x + (self.moves[direction][0] * num)
+ self.y = self.y + (self.moves[direction][1] * num)
+
+ def do(self, instruction, unit):
+ if instruction in ['L', 'R']:
+ self.rotate(instruction, unit)
+ else:
+ self.move(instruction, unit)
+
+
+ship = Ship()
+for line in sys.stdin:
+ instruction = line[0]
+ unit = int(line[1:])
+ ship.do(instruction, unit)
+
+print(1,abs(ship.x) + abs(ship.y))
diff --git a/12/12-2.py b/12/12-2.py
new file mode 100644
index 0000000..3a2d9d4
--- /dev/null
+++ b/12/12-2.py
@@ -0,0 +1,62 @@
+#!/usr/bin/python3
+
+import sys
+
+class Ship:
+
+ def __init__(self):
+ self.facing = 'E'
+ self.wp_x = 10
+ self.wp_y = 1
+ self.x = 0
+ self.y = 0
+
+ self.moves = {'E': [1,0],
+ 'S': [0,-1],
+ 'W': [-1,0],
+ 'N': [0,1]}
+
+ self.turns = {'E': ['N','S','W'],
+ 'S': ['E','W','N'],
+ 'W': ['S','N','E'],
+ 'N': ['W','E','S']}
+
+ def rotate(self, direction, degrees):
+ if degrees == 180:
+ self.wp_x = self.wp_x * -1
+ self.wp_y = self.wp_y * -1
+ elif (degrees == 90 and direction == 'L') or (degrees == 270 and direction == 'R'):
+ t = self.wp_x
+ self.wp_x = self.wp_y * -1
+ self.wp_y = t
+ elif (degrees == 90 and direction == 'R') or (degrees == 270 and direction == 'L'):
+ t = self.wp_x
+ self.wp_x = self.wp_y
+ self.wp_y = t * -1
+ else:
+ raise Exception("Invalid Turn")
+
+ def movewp(self, direction, num):
+ self.wp_x = self.wp_x + (self.moves[direction][0] * num)
+ self.wp_y = self.wp_y + (self.moves[direction][1] * num)
+
+ def move(self, num):
+ self.x = self.x + (self.wp_x * num)
+ self.y = self.y + (self.wp_y * num)
+
+ def do(self, instruction, unit):
+ if instruction == 'F':
+ self.move(unit)
+ elif instruction in ['L', 'R']:
+ self.rotate(instruction, unit)
+ else:
+ self.movewp(instruction, unit)
+
+
+ship = Ship()
+for line in sys.stdin:
+ instruction = line[0]
+ unit = int(line[1:])
+ ship.do(instruction, unit)
+
+print(2,abs(ship.x) + abs(ship.y))