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https://github.com/RussellChamp/advent-of-code-2021.git
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114 lines
2.4 KiB
Go
114 lines
2.4 KiB
Go
/* Day 17: Trick Shot */
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// This question is written very strange. Skipping for now
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package main
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import (
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"AoC2021/utils/args"
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"AoC2021/utils/log"
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"AoC2021/utils/timer"
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"bufio"
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"os"
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"regexp"
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"strconv"
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)
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func check(e error) {
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if e != nil {
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log.Println(log.DEBUG, "Oh snap!")
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panic(e)
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}
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}
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const XMIN = 20
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const XMAX = 30
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const YMIN = -10
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const YMAX = -5
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func main() {
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argMap := args.Parse(os.Args)
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log.SetLogLevelFromArgs(argMap)
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selectedPart, partSpecified := argMap["part"]
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log.Println(log.NORMAL, "--- Day 17: Trick Shot ---")
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timer.Start()
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if !partSpecified || selectedPart == "" || selectedPart == "1" {
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part1()
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timer.Tick()
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log.Println(log.NORMAL)
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}
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if !partSpecified || selectedPart == "" || selectedPart == "2" {
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part2()
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timer.Tick()
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log.Println(log.NORMAL)
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}
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}
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func part1() {
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log.Println(log.NORMAL, "* Part 1 *")
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log.Println(log.NORMAL, " Goal: How high can you make the probe go while still reaching the target area?")
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log.Println(log.NORMAL, " Answer: What is the highest y position it reaches on this trajectory?")
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x1, x2, y1, y2 := parseInputFile()
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drawGrid(x1, x2, y1, y2)
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log.Printf(log.NORMAL, "Read values from input. x: %d..%d, y: %d..%d\n", x1, x2, y1, y2)
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log.Printf(log.NORMAL, "The solution is %d\n", 42)
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}
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func part2() {
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log.Println(log.NORMAL, "* Part 2 *")
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log.Println(log.NORMAL, " Goal: ")
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log.Println(log.NORMAL, " Answer: ")
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}
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func parseInputFile() (int, int, int, int) {
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input, err := os.Open("./input.txt")
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check(err)
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defer input.Close()
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scanner := bufio.NewScanner(input)
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if !scanner.Scan() {
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panic("failed to load input data")
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}
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r, _ := regexp.Compile("target area: x=(-?[0-9]+)..(-?[0-9]+), y=(-?[0-9]+)..(-?[0-9]+)")
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matches := r.FindStringSubmatch(scanner.Text())
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if len(matches) != 5 {
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panic("failed to parse input data")
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}
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x1, x2, y1, y2 := 0, 0, 0, 0
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x1, err = strconv.Atoi(matches[1])
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check(err)
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x2, err = strconv.Atoi(matches[2])
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check(err)
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y1, err = strconv.Atoi(matches[3])
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check(err)
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y2, err = strconv.Atoi(matches[2])
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check(err)
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return x1, x2, y1, y2
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}
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func drawGrid(x1, x2, y1, y2 int) {
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for y := y1; y <= y2; y++ {
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for x := x1; x <= x2; x++ {
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switch {
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case x == 0 && y == 0:
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log.Printf(log.NORMAL, "S")
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case x >= XMIN && x <= XMAX && y >= YMIN && y <= YMAX:
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log.Printf(log.NORMAL, "T")
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default:
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log.Printf(log.NORMAL, ".")
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}
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}
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log.Println(log.NORMAL)
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}
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log.Println(log.NORMAL)
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}
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