279 lines
22 KiB
TypeScript
279 lines
22 KiB
TypeScript
// title: Advent 2023 - Day 3
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// author: Simon Cambier
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// desc: short description
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// script: js
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const input =
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`.split("\n");
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type Gear = {
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x: number;
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y: number;
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// Visualization
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color: number;
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rotOffset: number;
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};
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type Num = {
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value: number;
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x1: number;
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x2: number;
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y1: number;
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y2: number;
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};
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function isNum(c: string) {
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return !isNaN(parseInt(c));
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}
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trace("");
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trace("Advent of Code 2023 - Day 3");
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trace("");
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let sum1 = 0;
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let sum2 = 0;
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let gears: Gear[] = [];
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let nums: Num[] = [];
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for (const [i, line] of input.entries()) {
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// Regex to extract asterisks and their position from string
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const regexGears = /(\*)/g;
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let matchGears;
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while ((matchGears = regexGears.exec(line))) {
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const gear = {
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x: matchGears.index,
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y: i,
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color: Math.round(Math.random() * 15 + 1),
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rotOffset: Math.random() * Math.PI * 2,
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};
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gears.push(gear);
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}
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// regex to extract numbers + their position from string
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const regexNum = /(\d+)/g;
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let matchNum;
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while ((matchNum = regexNum.exec(line))) {
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const num = {
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value: parseInt(matchNum[0]),
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x1: matchNum.index - 1,
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x2: matchNum.index + matchNum[0].length,
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y1: i - 1,
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y2: i + 1,
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};
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// Check if the number is adjacent to a symbol
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loop: for (let y = num.y1; y <= num.y2; y++) {
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for (let x = num.x1; x <= num.x2; x++) {
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const symbol = input[y]?.[x];
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if (symbol && symbol !== "." && !isNum(symbol)) {
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nums.push(num);
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sum1 += num.value;
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break loop;
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}
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}
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}
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}
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}
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const vizItems: { gear: Gear; num1: Num; num2: Num }[] = [];
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// Iterate gears to find ones that are adjacent to 2 numbers
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for (const gear of gears) {
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let count = 0;
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let matches = [];
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for (const num of nums) {
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if (
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gear.x >= num.x1 &&
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gear.y >= num.y1 &&
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gear.x >= num.x1 &&
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gear.y <= num.y2 &&
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gear.x <= num.x2 &&
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gear.y >= num.y1 &&
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gear.x <= num.x2 &&
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gear.y <= num.y2
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) {
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matches.push(num);
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count++;
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}
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}
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if (count === 2) {
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vizItems.push({ gear, num1: matches[0], num2: matches[1] });
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sum2 += matches[0].value * matches[1].value;
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}
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}
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trace("Part 1: " + sum1);
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trace("Part 2: " + sum2);
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trace(JSON.stringify(vizItems.length));
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function TIC() {
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cls();
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for (const [i, cog] of vizItems.entries()) {
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if (i % 10 !== 0) continue;
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const offset = cog.gear.rotOffset;
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const x = (cog.gear.x / 140) * 240; //Math.random() * 240;
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const y = cog.gear.y; // Math.random() * 136;
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print("*", x, y, cog.gear.color);
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const len = print(cog.num1.value, -100, -100);
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// num1 rotates around gear
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print(
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cog.num1.value,
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x + 3 - len / 2 + (Math.sin(time() / 200 + offset) * len) / 2,
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y + (Math.cos(time() / 200 + offset) * len) / 2,
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cog.gear.color
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);
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// num2 rotates around gear, but with a 180° offset
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print(
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cog.num2.value,
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x + 3 - len / 2 + (Math.sin(time() / 200 + Math.PI + offset) * len) / 2,
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y + (Math.cos(time() / 200 + Math.PI + offset) * len) / 2,
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cog.gear.color
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);
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}
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}
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