Added Force Quit to intcode processor

2019/day15/maze.go

@@ -0,0 +1,139 @@
+package main
+
+import (
+	"fmt"
+
+	helpers "git.bullercodeworks.com/brian/adventofcode/helpers"
+)
+
+const (
+	MAZE_UNKNOWN = -1
+	MAZE_WALL    = 0
+	MAZE_EMPTY   = 1
+	MAZE_O2SYS   = 2
+)
+
+const (
+	DIR_N = 1
+	DIR_S = 2
+	DIR_W = 3
+	DIR_E = 4
+)
+
+type Maze struct {
+	maze       map[string]int
+	maxX, minX int
+	maxY, minY int
+	bot        *helpers.Coordinate
+	path       []*helpers.Coordinate
+	dirHistory []int
+	dnt        bool
+}
+
+func NewMaze() *Maze {
+	m := &Maze{
+		maze: make(map[string]int),
+		maxX: helpers.MIN_INT,
+		minX: helpers.MAX_INT,
+		maxY: helpers.MIN_INT,
+		minY: helpers.MAX_INT,
+		bot:  helpers.NewCoordinate(0, 0),
+	}
+	m.path = append(m.path, helpers.NewCoordinate(0, 0))
+	return m
+}
+
+func (m *Maze) SetCoord(c *helpers.Coordinate, val int) {
+	m.maze[c.String()] = val
+	if m.maxX < c.X {
+		m.maxX = c.X
+	}
+	if m.minX > c.X {
+		m.minX = c.X
+	}
+	if m.maxY < c.Y {
+		m.maxY = c.Y
+	}
+	if m.minY > c.Y {
+		m.minY = c.Y
+	}
+}
+
+func (m *Maze) GetCoord(c *helpers.Coordinate) int {
+	v, ok := m.maze[c.String()]
+	if !ok {
+		return MAZE_UNKNOWN
+	}
+	return v
+}
+
+func (m *Maze) GetDirFromBot(dir int) *helpers.Coordinate {
+	switch dir {
+	case DIR_N:
+		return m.bot.GetNorthCoord()
+	case DIR_E:
+		return m.bot.GetEastCoord()
+	case DIR_S:
+		return m.bot.GetSouthCoord()
+	case DIR_W:
+		return m.bot.GetWestCoord()
+	}
+	return nil
+}
+
+func (m *Maze) MoveBot(dir int) bool {
+	dest := m.GetDirFromBot(dir)
+	if m.GetCoord(dest) == MAZE_UNKNOWN || m.GetCoord(dest) == MAZE_WALL {
+		return false
+	}
+	m.bot.X, m.bot.Y = dest.X, dest.Y
+	if !m.dnt {
+		m.path = append(m.path, helpers.NewCoordinate(m.bot.X, m.bot.Y))
+		m.dirHistory = append(m.dirHistory, dir)
+	}
+	m.dnt = false
+	return true
+}
+
+func (m *Maze) GetDirectionToLast() int {
+	if len(m.dirHistory) == 0 {
+		return -1
+	}
+	m.dnt = true
+	var dir int
+	dir, m.dirHistory = m.dirHistory[len(m.dirHistory)-1], m.dirHistory[:len(m.dirHistory)-1]
+	switch dir {
+	case DIR_N:
+		return DIR_S
+	case DIR_S:
+		return DIR_N
+	case DIR_W:
+		return DIR_E
+	case DIR_E:
+		return DIR_W
+	}
+	return -1
+}
+
+func (m *Maze) Print() {
+	for y := m.minY; y <= m.maxY; y++ {
+		for x := m.minX; x <= m.maxX; x++ {
+			c := helpers.NewCoordinate(x, y)
+			if m.bot.Equals(*c) {
+				fmt.Print("%")
+			} else {
+				switch m.GetCoord(c) {
+				case MAZE_UNKNOWN:
+					fmt.Print("~")
+				case MAZE_WALL:
+					fmt.Print("#")
+				case MAZE_EMPTY:
+					fmt.Print(" ")
+				case MAZE_O2SYS:
+					fmt.Print("O")
+				}
+			}
+		}
+		fmt.Println()
+	}
+}