2019 Day 18 started

2019/day18/main.go

@@ -0,0 +1,77 @@
+package main
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+
+	helpers "git.bullercodeworks.com/brian/adventofcode/helpers"
+)
+
+var maxX, maxY int
+var vault map[helpers.Coordinate]byte
+var keys map[helpers.Coordinate]byte
+var doors map[helpers.Coordinate]byte
+
+func main() {
+	file := "input"
+	if helpers.GetArgNumber(1) != "" {
+		file = helpers.GetArgNumber(1)
+	}
+	inp := helpers.FileToBytes(file)
+	wrk := bytes.Split(inp, []byte{'\n'})
+	maxY = len(wrk)
+	vault = make(map[helpers.Coordinate]byte)
+	keys = make(map[helpers.Coordinate]byte)
+	doors = make(map[helpers.Coordinate]byte)
+	maxX = len(wrk[0])
+	for y, yv := range wrk {
+		for x, xv := range yv {
+			vault[*helpers.NewCoordinate(x, y)] = xv
+			if isKey(xv) {
+				keys[*helpers.NewCoordinate(x, y)] = xv
+			} else if isDoor(xv) {
+				doors[*helpers.NewCoordinate(x, y)] = xv
+			}
+		}
+	}
+
+	PrintVault()
+}
+
+func isDoor(b byte) bool {
+	return b >= 'A' && b <= 'Z'
+}
+func isKey(b byte) bool {
+	return b >= 'a' && b <= 'z'
+}
+
+func keyToDoor(b byte) byte {
+	return (b - 'a') + 'A'
+}
+
+func doorToKey(b byte) byte {
+	return (b - 'A') + 'a'
+}
+
+func findKey(b byte) (helpers.Coordinate, error) {
+	var r helpers.Coordinate
+	if !isDoor(b) {
+		return r, errors.New("Invalid Door")
+	}
+
+	return r, nil
+}
+
+func PrintVault() {
+	for y := 0; y < maxY; y++ {
+		for x := 0; x < maxX; x++ {
+			fmt.Print(string(vault[*helpers.NewCoordinate(x, y)]))
+		}
+		fmt.Println()
+	}
+}
+
+func c(x, y int) string {
+	return fmt.Sprintf("[%d, %d]", x, y)
+}