Trying to finish up 2019

2019/day20/main.go

@@ -0,0 +1,94 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"time"
+
+	helpers "git.bullercodeworks.com/brian/adventofcode/helpers"
+)
+
+var maze *Maze
+
+func main() {
+	file := "input"
+	var manual bool
+	if helpers.GetArgNumber(1) != "" {
+		file = helpers.GetArgNumber(1)
+	}
+	if helpers.GetArgNumber(2) == "manual" {
+		manual = true
+	}
+	maze = NewMaze(file)
+	if manual {
+		runmanual(maze)
+	}
+	part1()
+	//part2(inp)
+}
+
+func part1() {
+	maze.GetStart().steps = 0
+	ProcessNode(maze.GetStart(), 0)
+	fmt.Println("Distance:", maze.GetEnd().steps)
+}
+
+func ProcessNode(m *MazeCoord, steps int) {
+	fmt.Println("Processing Node", m)
+	if maze.IsEnd(m.X, m.Y) {
+		fmt.Println("  End")
+		return
+	}
+	for _, neighbor := range []*MazeCoord{m.N, m.E, m.S, m.W} {
+		if neighbor == nil {
+			continue
+		}
+		if m.steps+1 < neighbor.steps {
+			neighbor.steps = m.steps + 1
+			if !neighbor.visited {
+				ProcessNode(neighbor, m.steps+1)
+			}
+		}
+	}
+	m.visited = true
+}
+
+func runmanual(m *Maze) {
+	var err error
+	var inp string
+	m.Print()
+	for {
+		reader := bufio.NewReader(os.Stdin)
+		inp, err = reader.ReadString('\n')
+		if err != nil {
+			fmt.Println("Input Error:", err.Error())
+			continue
+		}
+		var valid bool
+		switch inp[0] {
+		case 'N', 'n':
+			valid = m.MoveNorth()
+		case 'E', 'e':
+			valid = m.MoveEast()
+		case 'S', 's':
+			valid = m.MoveSouth()
+		case 'W', 'w':
+			valid = m.MoveWest()
+		case 'Q', 'q':
+			fmt.Println("Quitting")
+			break
+		}
+		fmt.Println(helpers.CLEAR_SCREEN)
+		m.Print()
+		if m.IsDone() {
+			fmt.Println("DONE!")
+			break
+		}
+		if !valid {
+			fmt.Println("Invalid Move")
+		}
+		time.Sleep(time.Second / 2)
+
+	}
+}