1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
Tile = Struct.new(:pos, :up, :right, :down, :left)
class Maze
attr_reader :width
attr_reader :height
attr_accessor :start_pos
attr_accessor :end_pos
def initialize(width, height)
@width = width
@height = height
@h_walls = Array.new(@width) { Array.new(@height + 1, true) }
@v_walls = Array.new(@width + 1) { Array.new(@height, true) }
end
def inBounds?(pos)
x = pos.x
y = pos.y
x >= 0 && y >= 0 && x < @width && y < @height
end
def get(pos)
raise IndexError unless inBounds?(pos)
x = pos.x
y = pos.y
Tile.new(pos, @h_walls[x][y], @v_walls[x + 1][y], @h_walls[x][y + 1], @v_walls[x][y])
end
def neighbors(pos)
neighbors = []
[:up, :right, :down, :left].each do |dir|
neighbors.push(pos.move(dir)) if inBounds?(pos.move(dir))
end
neighbors
end
def open_neighbors(pos)
neighbors = []
tile = get(pos)
[:up, :right, :down, :left].each do |dir|
neighbors.push(pos.move(dir)) if tile[dir] == false
end
neighbors
end
def set(pos, dir, state)
raise IndexError if pos.x >= @width
raise IndexError if pos.y >= @height
case dir
when :up
@h_walls[pos.x][pos.y] = state
when :right
@v_walls[pos.x + 1][pos.y] = state
when :down
@h_walls[pos.x][pos.y + 1] = state
when :left
@v_walls[pos.x][pos.y] = state
end
end
def to_s(prefix='', path=[])
drawingField = Array.new(@height * 2 + 1) { Array.new(@width * 2 + 1) { " " } }
@v_walls.each_index do |x|
@v_walls[x].each_index do |y|
next if @v_walls[x][y] == false
drawingField[y * 2][x * 2] = "█"
drawingField[y * 2 + 1][x * 2] = "█"
drawingField[y * 2 + 2][x * 2] = "█"
end
end
@h_walls.each_index do |x|
@h_walls[x].each_index do |y|
next if @h_walls[x][y] == false
drawingField[y * 2][x * 2] = "█"
drawingField[y * 2][x * 2 + 1] = "█"
drawingField[y * 2][x * 2 + 2] = "█"
end
end
bright_red_block = "\e[0;31;1m█\e[0m"
path.each_index do |i|
drawingField[path[i].y * 2 + 1][path[i].x * 2 + 1] = bright_red_block
if i > 0
wall_pos = Pos.new(path[i - 1].x * 2 + 1, path[i - 1].y * 2 + 1)
.move(path[i].dir_from(path[i - 1]))
drawingField[wall_pos.y][wall_pos.x] = bright_red_block
end
end
drawingField.map { |line| prefix + line.join("") }.join("\n")
end
end
|
