Class: AMazeIng::Cell

Inherits:
Object
  • Object
show all
Defined in:
lib/a_maze_ing/cell.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(cell_index_x, cell_index_y) ⇒ Cell

Returns a new instance of Cell.



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# File 'lib/a_maze_ing/cell.rb', line 4

def initialize(cell_index_x, cell_index_y)
  @cell_index_x = cell_index_x
  @cell_index_y = cell_index_y
  
  @walls = [true, true, true, true]
  @visited = false
  @color = Color::GREEN
  @is_current = false
end

Instance Attribute Details

#cell_index_x ⇒ Object

Returns the value of attribute cell_index_x.



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# File 'lib/a_maze_ing/cell.rb', line 3

def cell_index_x
  @cell_index_x
end

#cell_index_y ⇒ Object

Returns the value of attribute cell_index_y.



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# File 'lib/a_maze_ing/cell.rb', line 3

def cell_index_y
  @cell_index_y
end

#is_current ⇒ Object

Returns the value of attribute is_current.



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# File 'lib/a_maze_ing/cell.rb', line 3

def is_current
  @is_current
end

#neigh_bors ⇒ Object

Returns the value of attribute neigh_bors.



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# File 'lib/a_maze_ing/cell.rb', line 3

def neigh_bors
  @neigh_bors
end

#visited ⇒ Object

Returns the value of attribute visited.



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# File 'lib/a_maze_ing/cell.rb', line 3

def visited
  @visited
end

#walls ⇒ Object

Returns the value of attribute walls.



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# File 'lib/a_maze_ing/cell.rb', line 3

def walls
  @walls
end

Instance Method Details

#cell_index(i, j, cells_length) ⇒ Object

Get cell_index by cell_index_x and cell_index_y if the given indexes is invalid (outside the maze) it will return cells_length, which will cause the returned cell (neighbor) to be equal to nil



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# File 'lib/a_maze_ing/cell.rb', line 21

def cell_index(i, j, cells_length)
  if i < 0 || j < 0 || i > $cols-1 || j > $rows-1
    return cells_length # cause the cell to be (neighbor) equal to nil
  else
    return i + j * $cols
  end
end

#draw(cell_size, color) ⇒ Object 



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# File 'lib/a_maze_ing/cell.rb', line 70

def draw(cell_size, color)
  x = @cell_index_x * cell_size
  y = @cell_index_y * cell_size

  if @walls[0] 
    draw_line x,             y,             color,
              x + cell_size, y,             color
  end

  if @walls[1] 
    draw_line x + cell_size, y,             color,
              x + cell_size, y + cell_size, color
  end

  if @walls[2] 
    draw_line x + cell_size, y + cell_size, color,
              x,             y + cell_size, color
  end

  if @walls[3] 
    draw_line x,             y + cell_size, color,
              x,             y,             color
  end
end

#get_random_neighbor(cells) ⇒ Object 



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# File 'lib/a_maze_ing/cell.rb', line 29

def get_random_neighbor(cells)
  @neigh_bors = Array.new

  top    = cells[cell_index(cell_index_x,     cell_index_y - 1, cells.length)]
  right  = cells[cell_index(cell_index_x + 1, cell_index_y,     cells.length)]
  bottom = cells[cell_index(cell_index_x,     cell_index_y + 1, cells.length)]
  left   = cells[cell_index(cell_index_x - 1, cell_index_y,     cells.length)]

  if top
    if !top.visited
      @neigh_bors.push(top);
    end
  end

  if right
    if !right.visited
      @neigh_bors.push(right);
    end
  end

  if bottom
    if !bottom.visited
      @neigh_bors.push(bottom);
    end
  end

  if left
    if !left.visited
      @neigh_bors.push(left);
    end
  end

  if @neigh_bors.length > 0
    max = @neigh_bors.length - 1
    random_index = rand(0..max)
    return @neigh_bors[random_index]
  else 
    return nil
  end
end