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‎build.gradle‎

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// project meta data
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group 'de.havox_design.aoc2023'
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version '0.13.0'
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version '0.13.1'
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// Switch to gradle "all" distribution.
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wrapper {

‎day14/README.md‎

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# Day 14: Parabolic Reflector Dish
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You reach the place where all of the mirrors were pointing: a massive
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[parabolic reflector dish](https://en.wikipedia.org/wiki/Parabolic_reflector) attached to the side of another large
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mountain.
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The dish is made up of many small mirrors, but while the mirrors themselves are roughly in the shape of a parabolic
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reflector dish, each individual mirror seems to be pointing in slightly the wrong direction. If the dish is meant to
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focus light, all it's doing right now is sending it in a vague direction.
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This system must be what provides the energy for the lava! If you focus the reflector dish, maybe you can go where
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it's pointing and use the light to fix the lava production.
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Upon closer inspection, the individual mirrors each appear to be connected via an elaborate system of ropes and pulleys
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to a large metal platform below the dish. The platform is covered in large rocks of various shapes. Depending on their
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position, the weight of the rocks deforms the platform, and the shape of the platform controls which ropes move and
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ultimately the focus of the dish.
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In short: if you move the rocks, you can focus the dish. The platform even has a control panel on the side that lets
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you **tilt** it in one of four directions! The rounded rocks (`O`) will roll when the platform is tilted, while the
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cube-shaped rocks (`#`) will stay in place. You note the positions of all of the empty spaces (`.`) and rocks (your
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puzzle input). For example:
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```
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O....#....
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O.OO#....#
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.....##...
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OO.#O....O
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.O.....O#.
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O.#..O.#.#
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..O..#O..O
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.......O..
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#....###..
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#OO..#....
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```
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Start by tilting the lever so all of the rocks will slide **north** as far as they will go:
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```
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OOOO.#.O..
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OO..#....#
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OO..O##..O
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O..#.OO...
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........#.
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..#....#.#
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..O..#.O.O
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..O.......
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#....###..
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#....#....
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```
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You notice that the support beams along the north side of the platform are **damaged**; to ensure the platform doesn't
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collapse, you should calculate the **total load** on the north support beams.
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The amount of load caused by a single rounded rock (`O`) is equal to the number of rows from the rock to the south edge
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of the platform, including the row the rock is on. (Cube-shaped rocks (`#`) don't contribute to load.) So, the amount
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of load caused by each rock in each row is as follows:
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```
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OOOO.#.O.. 10
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OO..#....# 9
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OO..O##..O 8
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O..#.OO... 7
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........#. 6
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..#....#.# 5
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..O..#.O.O 4
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..O....... 3
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#....###.. 2
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#....#.... 1
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```
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The total load is the sum of the load caused by all of the **rounded rocks**. In this example, the total load is
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**`136`**.
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Tilt the platform so that the rounded rocks all roll north. Afterward, **what is the total load on the north support
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beams**?

‎day14/src/main/kotlin/de/havox_design/aoc2023/day14/Day14.kt‎

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class Day14(private var filename: String) {
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fun solvePart1(): Long =
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136L
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fun solvePart2(): Long =
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0L

‎day14/src/main/resources/day14.txt‎

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......#.O#O.##...O.....#...#..##...OO#.OO.......O.##....O.......O..#.#..O.O...O#O.O....#.O..OO..O.O.
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.##.##OO..#.#O..##..OOO#..O.....O.O...#.........#.......#.O#.O..O...O..OO#O..O....#..O..#OO.O..O....
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O.....#..#..O.#OOO.OO..O..#..#O.....O...#.O..#..#O#.........#.#.....###.#.#.O...#.#.O......O..OO..#.
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..O#....#..##......O..O..#....OO....OOO...#O...#...O..##..#...OO...OO......O#.OO....O....O.#O..O.O#O
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.....O.....#OOO.O.O.OO..O.O....#....O..O#O#..#.#......#.O.O##.O..O......OOO...O.........O..O#.O.##.#
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.O.#.....O#...O#.....OOO....O.O#....#.OO#......O........#.OO#O...O.##O.O....O..O#O.#.......O.....O#.
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..O..#.O.....#.OOO.#.....#O.#...O.OO..O.....#O.###...O.#..##...O...#.##......O....O...O#....O....O..
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.O.O#O.O#.O......#.#.O..O#.......O.OO...OO...O.#OO#.....OO.O.O..#..OOO.....O#....O.#.....#....#.O...
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..O.........#.O..##...#..#OO#O#.#..#......O.#...#..#O.........#.#...OO....#......OO#O.##O.O..OO#....
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...O#.O.#.#........#.#..O.O#...O.#......O....##..##.#.O..OO.#.#....O..O....O..#O.#...#O#.O...#....O#
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...O..#...O...#O...#...OO.#O..#.O....O.#.O..O..O#.O....O.##O..#O.##....#.OO..#.#..#...OOO.O..O.#....
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.......O#.O.#O##O..O..O.....O...O..O#O..O#O..#....O..O........O.....OO#...#...O.O#O....#.OO#....##..
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#.##O#.......#...O#...#...#...#O.O.O...O..#.OO......#.O.#...##.O.#.O..O..#O#O...........OOOOOOO....#
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.....O..O.#..O......#....O.....OO..O..#.....#.O..#..OO..#.OO.O.#....#...##...O.......#OO.O...#O.....
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O.......##..OO...#..O.#.#.#.....O#.....O..O#.O#....##....O.#..OO.#..#OOO.O.O###O#.#OO......O...O...O
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O.O.....O.O#.O#.O....O.#..##O.#.O..#.#.O.O###.#.O...#..O.O#...#.O.....#O..OO.O#O#..#O#.#...........O
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.#...O.O#...#..OOO.O....O..#....O#...#........O#O.##.#...OO.....#....#O..#O.....O#...O...........#..
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.#.#...O#O.....O#OO.#O....O##..##..O...#..O.O.O.....O..#O..O#O......#.O...O........O...#.........O.O
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O.#O.##.....O#...OOO.......O.O.#.#.#.....#.OO.......#O.....#.O.O#...O##..#.#.............#.O#O....#.
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...O##.O#....OO.........#OO........O.O.OOO.#.#..O..#...OO....OO..........O...OO#OO..#O...O.O..O...O.
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.OO.O#..#.#.O...#O...O..#...O.O..#..##.........#..##O.OO..#..O#.........#O.OOO......O.##...O#O....#.
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.OOO....O...#..#O.......#.O......OO.O#O.....O...O..#....O.O#......O.O....O....OOO###..OO...#OO......
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.O..O....#...OO.O...#....#O.O...#...OO##.....O..O...O........O...O#O...O...O.O....OO.OO......O.....#
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...#...#.OOO...O.......#......O.O.#.##.#.O.O...##.OO.#.O.O..OO#......OO..O.O#.#.......#..#.OO.O.OOO.
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O#..#..##..O..OOO..O....#..O.......O...##O#..#..#.O.OO..#.O....#...OOO..O.O...OOO#.........#.#O...O.
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.#...O..#.##.O........O..#..#O..##...#..OO...#.....O#..O.....#.##......#..OO........O..O#....#O#....
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O.O#..O..#OOO..#.......#...#.O....##...#.O#...O......##........O.O####O.OO#..O....#...##O#..O..#....
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..OO..OO.O#O...O..........O........O.O..#.#.O.O.......#O...O.O...##.#....#.O..#.....#...O.#...OO#O.#
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.....#..O.....#....O#..#.O#.#..#OO.#..O.....O...#..#.O.O....#.#O.O.#..#.O.OO..O..#..O..#..#OOO....#O
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OO#.#O..........O.......O#O..#O.#.##OO.#....O..O..#.O....#OO..#.##...#.....##O#.O.O...O#..O#..#....#
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.O..O.OO..O.#...........OOO##..O..O...O.O#.O#OO...O.#...O.#.O.##.#..O.OO##.O.##O.O...O....OO#.......
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.OO.O.#....O.O#......O#...#.##O#...O.#....#..O#O..#...#....O..OOO#.#.....O#.#O.##.#O#O.#.O....#.##O.

‎day14/src/test/kotlin/de/havox_design/aoc2023/day14/Day14Test.kt‎

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@JvmStatic
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private fun getDataForTestSolvePart1(): Stream<Arguments> =
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Stream.of(
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Arguments.of("part1sample.txt", 136L)
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)
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@JvmStatic

‎day14/src/test/resources/part1sample.txt‎

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O....#....
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O.OO#....#
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.....##...
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OO.#O....O
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.O.....O#.
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O.#..O.#.#
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..O..#O..O
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#....###..
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#OO..#....

‎day14/src/test/resources/part1sample1.txt‎

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