diff --git a/.gitignore b/.gitignore
deleted file mode 100644
index 2f7896d..0000000
--- a/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-target/
diff --git a/day-12/Cargo.lock b/day-12/Cargo.lock
deleted file mode 100644
index b7e1235..0000000
--- a/day-12/Cargo.lock
+++ /dev/null
@@ -1,78 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-[[package]]
-name = "day-12"
-version = "0.1.0"
-dependencies = [
- "indoc",
-]
-
-[[package]]
-name = "indoc"
-version = "0.3.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "47741a8bc60fb26eb8d6e0238bbb26d8575ff623fdc97b1a2c00c050b9684ed8"
-dependencies = [
- "indoc-impl",
- "proc-macro-hack",
-]
-
-[[package]]
-name = "indoc-impl"
-version = "0.3.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce046d161f000fffde5f432a0d034d0341dc152643b2598ed5bfce44c4f3a8f0"
-dependencies = [
- "proc-macro-hack",
- "proc-macro2",
- "quote",
- "syn",
- "unindent",
-]
-
-[[package]]
-name = "proc-macro-hack"
-version = "0.5.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5"
-
-[[package]]
-name = "proc-macro2"
-version = "1.0.24"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e0704ee1a7e00d7bb417d0770ea303c1bccbabf0ef1667dae92b5967f5f8a71"
-dependencies = [
- "unicode-xid",
-]
-
-[[package]]
-name = "quote"
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-checksum = "aa563d17ecb180e500da1cfd2b028310ac758de548efdd203e18f283af693f37"
-dependencies = [
- "proc-macro2",
-]
-
-[[package]]
-name = "syn"
-version = "1.0.54"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a2af957a63d6bd42255c359c93d9bfdb97076bd3b820897ce55ffbfbf107f44"
-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-xid",
-]
-
-[[package]]
-name = "unicode-xid"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
-
-[[package]]
-name = "unindent"
-version = "0.1.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f14ee04d9415b52b3aeab06258a3f07093182b88ba0f9b8d203f211a7a7d41c7"
diff --git a/day-12/Cargo.toml b/day-12/Cargo.toml
deleted file mode 100644
index 35cad43..0000000
--- a/day-12/Cargo.toml
+++ /dev/null
@@ -1,10 +0,0 @@
-[package]
-name = "day-12"
-version = "0.1.0"
-authors = ["Tristan Daniël Maat <tm@tlater.net>"]
-edition = "2018"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
-indoc = "0.3"
diff --git a/day-12/input b/day-12/input
deleted file mode 100644
index bedc29a..0000000
--- a/day-12/input
+++ /dev/null
@@ -1,771 +0,0 @@
-F8
-N2
-F32
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-N4
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diff --git a/day-12/src/main.rs b/day-12/src/main.rs
deleted file mode 100644
index 6212c23..0000000
--- a/day-12/src/main.rs
+++ /dev/null
@@ -1,225 +0,0 @@
-use std::fs;
-
-fn main() -> Result<(), Box<dyn std::error::Error>> {
- let input = fs::read_to_string("input")?;
- let actions = parse_actions(&input)?;
-
- // Part 1
- let location = simulate_ship_movement(&actions);
- println!("{}", location.0.abs() + location.1.abs());
-
- // Part 2
- let location = simulate_waypoint_movement(&actions);
- println!("{}", location.0.abs() + location.1.abs());
-
- Ok(())
-}
-
-#[derive(Copy, Clone, Debug)]
-enum Action {
- North(u32),
- South(u32),
- East(u32),
- West(u32),
- Left(u32),
- Right(u32),
- Forward(u32),
-}
-
-impl Action {
- fn new(input: &str) -> Result<Self, String> {
- if input.len() < 2 {
- Err(format!("Invalud input line: {}", input))?;
- }
-
- let (action, value) = input.split_at(1);
- let value = value
- .parse()
- .map_err(|e| format!("Could not parse value: {}", e))?;
-
- Ok(match action {
- "N" => Self::North(value),
- "S" => Self::South(value),
- "E" => Self::East(value),
- "W" => Self::West(value),
- "L" => Self::Left(value),
- "R" => Self::Right(value),
- "F" => Self::Forward(value),
- _ => Err(format!("Could not parse action: {}", action))?,
- })
- }
-
- fn opposite_direction(self) -> Self {
- match self {
- Action::North(x) => Action::South(x),
- Action::South(x) => Action::North(x),
- Action::East(x) => Action::West(x),
- Action::West(x) => Action::East(x),
- _ => panic!("Invalid direction"),
- }
- }
-
- fn right_direction(self) -> Self {
- match self {
- Action::North(x) => Action::East(x),
- Action::South(x) => Action::West(x),
- Action::East(x) => Action::South(x),
- Action::West(x) => Action::North(x),
- _ => panic!("Invalid direction"),
- }
- }
-
- fn left_direction(self) -> Self {
- match self {
- Action::North(x) => Action::West(x),
- Action::South(x) => Action::East(x),
- Action::East(x) => Action::North(x),
- Action::West(x) => Action::South(x),
- _ => panic!("Invalid direction"),
- }
- }
-}
-
-fn parse_actions(input: &str) -> Result<Vec<Action>, String> {
- input.lines().map(Action::new).collect()
-}
-
-fn simulate_ship_movement(actions: &Vec<Action>) -> (i64, i64) {
- let mut coords: (i64, i64) = (0, 0);
- let mut direction = Action::East(0);
-
- for action in actions {
- // If the action is Action::Forward, we instead want to move
- // in a direction determined by our current angle.
- //
- // So we convert Action::Forward to a concrete direction.
-
- let converted_action = if let &Action::Forward(amount) = action {
- match direction {
- Action::North(_) => Action::North(amount),
- Action::South(_) => Action::South(amount),
- Action::East(_) => Action::East(amount),
- Action::West(_) => Action::West(amount),
- _ => unreachable!("Direction can only be NSEW."),
- }
- } else {
- *action
- };
-
- match converted_action {
- Action::North(amount) => {
- coords.1 += amount as i64;
- }
- Action::South(amount) => {
- coords.1 -= amount as i64;
- }
- Action::East(amount) => {
- coords.0 += amount as i64;
- }
- Action::West(amount) => {
- coords.0 -= amount as i64;
- }
- Action::Left(amount) => match amount % 360 {
- 0 => direction = direction,
- 90 => direction = direction.left_direction(),
- 180 => direction = direction.opposite_direction(),
- 270 => direction = direction.right_direction(),
- _ => panic!("Only 90 degree turns allowed"),
- },
- Action::Right(amount) => match amount % 360 {
- 0 => direction = direction,
- 90 => direction = direction.right_direction(),
- 180 => direction = direction.opposite_direction(),
- 270 => direction = direction.left_direction(),
- _ => panic!("Only 90 degree turns allowed"),
- },
- Action::Forward(_) => unreachable!("Converted previously"),
- }
- }
-
- coords
-}
-
-fn simulate_waypoint_movement(actions: &Vec<Action>) -> (i64, i64) {
- let mut waypoint = (1, 10);
- let mut ship = (0, 0);
-
- for action in actions {
- match *action {
- Action::North(amount) => {
- waypoint.0 += amount as i64;
- }
- Action::South(amount) => {
- waypoint.0 -= amount as i64;
- }
- Action::East(amount) => {
- waypoint.1 += amount as i64;
- }
- Action::West(amount) => {
- waypoint.1 -= amount as i64;
- }
- Action::Left(amount) => match amount % 360 {
- 0 => {}
- 90 => waypoint = (waypoint.1, -waypoint.0),
- 180 => waypoint = (-waypoint.0, -waypoint.1),
- 270 => waypoint = (-waypoint.1, waypoint.0),
- _ => panic!("Only 90 degree turns allowed"),
- },
- Action::Right(amount) => match amount % 360 {
- 0 => {}
- 90 => waypoint = (-waypoint.1, waypoint.0),
- 180 => waypoint = (-waypoint.0, -waypoint.1),
- 270 => waypoint = (waypoint.1, -waypoint.0),
- _ => panic!("Only 90 degree turns allowed"),
- },
- Action::Forward(amount) => {
- ship.0 += waypoint.0 * amount as i64;
- ship.1 += waypoint.1 * amount as i64;
- }
- }
- }
-
- ship
-}
-
-#[cfg(test)]
-mod tests {
- use super::*;
- use indoc::indoc;
-
- #[test]
- fn test_simple() -> Result<(), Box<dyn std::error::Error>> {
- let input = indoc!(
- "F10
- N3
- F7
- R90
- F11
- "
- );
-
- let actions = parse_actions(&input)?;
- let location = simulate_ship_movement(&actions);
- assert_eq!(location.0.abs() + location.1.abs(), 25);
-
- Ok(())
- }
-
- #[test]
- fn test_simple2() -> Result<(), Box<dyn std::error::Error>> {
- let input = indoc!(
- "F10
- N3
- F7
- R90
- F11
- "
- );
-
- let actions = parse_actions(&input)?;
- let location = simulate_waypoint_movement(&actions);
- assert_eq!(location.0.abs() + location.1.abs(), 286);
-
- Ok(())
- }
-}