From 4f1a3b8e7a3613a731ed75b70ec1256245644c4f Mon Sep 17 00:00:00 2001
From: Philippe Zwietering <philippe.zwietering@gmail.com>
Date: Tue, 19 Sep 2023 16:32:57 +0200
Subject: [PATCH] Priority queue added on aoc 15

---
 advent_of_code/2022/15/Cargo.lock  | 33 +++++++++++++++++
 advent_of_code/2022/15/Cargo.toml  |  1 +
 advent_of_code/2022/15/src/main.rs | 59 ++++++++++++++++++++++++++++--
 3 files changed, 90 insertions(+), 3 deletions(-)

diff --git a/advent_of_code/2022/15/Cargo.lock b/advent_of_code/2022/15/Cargo.lock
index b8ae363..91a258b 100644
--- a/advent_of_code/2022/15/Cargo.lock
+++ b/advent_of_code/2022/15/Cargo.lock
@@ -2,11 +2,34 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "autocfg"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
+
+[[package]]
+name = "hashbrown"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
+
+[[package]]
+name = "indexmap"
+version = "1.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd070e393353796e801d209ad339e89596eb4c8d430d18ede6a1cced8fafbd99"
+dependencies = [
+ "autocfg",
+ "hashbrown",
+]
+
 [[package]]
 name = "main"
 version = "0.1.0"
 dependencies = [
  "nom",
+ "priority-queue",
 ]
 
 [[package]]
@@ -30,3 +53,13 @@ dependencies = [
  "memchr",
  "minimal-lexical",
 ]
+
+[[package]]
+name = "priority-queue"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fff39edfcaec0d64e8d0da38564fad195d2d51b680940295fcc307366e101e61"
+dependencies = [
+ "autocfg",
+ "indexmap",
+]
diff --git a/advent_of_code/2022/15/Cargo.toml b/advent_of_code/2022/15/Cargo.toml
index 200567e..d5ddb4f 100644
--- a/advent_of_code/2022/15/Cargo.toml
+++ b/advent_of_code/2022/15/Cargo.toml
@@ -7,3 +7,4 @@ edition = "2021"
 
 [dependencies]
 nom = "7.1.2"
+priority-queue = "1.3.2"
diff --git a/advent_of_code/2022/15/src/main.rs b/advent_of_code/2022/15/src/main.rs
index 1c646b2..7b0418d 100644
--- a/advent_of_code/2022/15/src/main.rs
+++ b/advent_of_code/2022/15/src/main.rs
@@ -5,6 +5,7 @@ use nom::{
     sequence::{preceded, separated_pair},
     IResult,
 };
+use priority_queue::PriorityQueue;
 use std::collections::HashSet;
 
 fn parse_input(input: &str) -> IResult<&str, Vec<((i32, i32), (i32, i32))>> {
@@ -63,16 +64,19 @@ fn fill_line(
     }
 }
 
+#[derive(PartialEq, Eq, Hash)]
 enum EventType {
     Start,
     Intersection,
+    Middle,
     End,
 }
 
+#[derive(PartialEq, Eq, Hash)]
 struct Event {
-    x: i32,
-    y: i32,
+    coord: (i32, i32),
     t: EventType,
+    line_id: u32,
 }
 
 fn main() {
@@ -119,5 +123,54 @@ fn main() {
     // Je krijgt dan 3 event-types: start van een lijnstuk, een kruising en het einde van een lijnstuk.
     // Enige is dat je alleen in de daadwerkelijke coordinaat-range zoals in de opgave dingen wilt
     // mee laten tellen.
-    const max_coord: i32 = 4000000;
+    const MAX_COORD: i32 = 8000000;
+
+    let mut event_queue: PriorityQueue<Event, (i32, i32)> = PriorityQueue::new();
+    let mut line_id = 0;
+    for &(sensor, beacon) in coord_list.iter() {
+        let sensor = (sensor.0 * 2, sensor.1 * 2);
+        let beacon = (beacon.0 * 2, beacon.1 * 2);
+
+        let dist = manhattan_dist(sensor, beacon);
+
+        let begin = (sensor.0 + dist, sensor.1);
+        let middle_1 = (sensor.0, sensor.1 - dist);
+        let middle_2 = (sensor.0, sensor.1 + dist);
+        let end = (sensor.0 - dist, sensor.1);
+
+        event_queue.push(
+            Event {
+                coord: begin,
+                t: EventType::Start,
+                line_id,
+            },
+            begin,
+        );
+        event_queue.push(
+            Event {
+                coord: middle_1,
+                t: EventType::Middle,
+                line_id,
+            },
+            middle_1,
+        );
+        event_queue.push(
+            Event {
+                coord: middle_2,
+                t: EventType::Middle,
+                line_id,
+            },
+            middle_2,
+        );
+        event_queue.push(
+            Event {
+                coord: end,
+                t: EventType::End,
+                line_id,
+            },
+            end,
+        );
+
+        line_id += 1;
+    }
 }