WIP-Day 6

Part1-testinput working, input not working

Day 06/Part 1/index.ts

@@ -0,0 +1,93 @@
+import fs from 'node:fs';
+
+type Vec2d = {y: number, x: number}
+
+let visited: Map<string, boolean> = new Map<string, boolean>()
+let obstacles: boolean[][] = []
+let position: Vec2d = {x: -1, y: -1}
+
+let dir_NORTH: Vec2d = {x: 0, y: -1}
+let dir_EAST: Vec2d = {x: 1, y: 0 }
+let dir_SOUTH: Vec2d = {x: 0, y: 1}
+let dir_WEST: Vec2d = {x: -1, y: 0}
+
+let direction: Vec2d = dir_NORTH
+
+
+export default function runner(input: string) {
+
+
+  fs.readFile(`./${input}`, 'utf8', async (err, data) => {
+    if (err) throw err;
+
+
+    data.split("\n").forEach((value, index) => {
+      for (let i = 0; i < value.length; i++) {
+        if (obstacles[i] === undefined) obstacles[i] = []
+        if (obstacles[i] === undefined) throw new Error();
+        // @ts-ignore
+        obstacles[i][index] = value.charAt(i) === '#'
+        if (value.charAt(i) === '^') position = {x: i, y: index}
+      }
+    })
+
+    console.log(position)
+    console.log(position)
+    console.log(position)
+    console.log(position)
+    console.log(position)
+
+    // @ts-ignore
+    while (position.x>0 && position.y>0 && position.x<obstacles[0].length-1 && position.y<obstacles.length-1){
+        if (!move()) direction = rotate();
+    }
+
+    let count = visited.size
+
+    console.log(visited)
+
+    console.log()
+    console.log()
+    console.log()
+    console.log()
+
+    console.log(`Visited: ${count}`)
+
+  })
+}
+
+function move(): boolean {
+  // @ts-ignore
+  if (obstacles[position.x+direction.x][position.y+direction.y]){
+    return false
+  }
+  // const oldPos = {x: position.x, y: position.y}
+  position.x = position.x+direction.x
+  position.y = position.y+direction.y
+  // console.log(`move ${positionToString(oldPos)} => ${positionToString(position)}`)
+  // @ts-ignore
+  visited.set(JSON.stringify(position), true)
+  return true
+}
+
+function rotate(): { x: number, y: number } {
+  switch (direction) {
+    case dir_NORTH:
+      console.log(`rotate ${positionToString(dir_NORTH)} => ${positionToString(dir_EAST)}`)
+      return dir_EAST
+    case dir_EAST:
+      console.log(`rotate ${positionToString(dir_EAST)} => ${positionToString(dir_SOUTH)}`)
+      return dir_SOUTH;
+    case dir_SOUTH:
+      console.log(`rotate ${positionToString(dir_SOUTH)} => ${positionToString(dir_WEST)}`)
+      return dir_WEST;
+    case dir_WEST:
+      console.log(`rotate ${positionToString(dir_WEST)} => ${positionToString(dir_NORTH)}`)
+      return dir_NORTH;
+  }
+  return dir_NORTH
+}
+
+const positionToString = function (a: Vec2d){
+  return `x: ${a.x} | y:${a.y}`
+}