day 12

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))

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))