Class: Ascii_grid

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

Overview

This object contains the general size and shape of a grid. The object’s methods can then be used to print that grid to the terminal.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(x_size, y_size, x_offset, y_offset) ⇒ Ascii_grid

Returns a new instance of Ascii_grid.



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# File 'lib/ascii_grid.rb', line 20

def initialize(x_size, y_size, x_offset, y_offset)
    @x_size = x_size.to_i
    @y_size = x_size.to_i
    @x_offset = x_offset.to_i
    @y_offset = y_offset.to_i
    @point = "\e[31m@\e[0m"
    @blank_space = "+"
    @clear = false
end

Instance Attribute Details

#blank_space ⇒ Object

This is what will be printed as blank space in the grid, should only be one character



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# File 'lib/ascii_grid.rb', line 16

def blank_space
  @blank_space
end

#clear ⇒ Object

Bolean value, if true the clear command will be run when the make_grid method is called



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# File 'lib/ascii_grid.rb', line 18

def clear
  @clear
end

#point ⇒ Object

This is what will be printed as a point, should only be one character



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# File 'lib/ascii_grid.rb', line 14

def point
  @point
end

#x_offset ⇒ Object

Helps decide origin, make it exactly 1/2 of x_size to keep (0, 0) in the center



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# File 'lib/ascii_grid.rb', line 10

def x_offset
  @x_offset
end

#x_size ⇒ Object

Grid Width



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# File 'lib/ascii_grid.rb', line 6

def x_size
  @x_size
end

#y_offset ⇒ Object

Helps decide origin, make it exactly 1/2 of y_size to keep (0, 0) in the center



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# File 'lib/ascii_grid.rb', line 12

def y_offset
  @y_offset
end

#y_size ⇒ Object

Grid Height



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# File 'lib/ascii_grid.rb', line 8

def y_size
  @y_size
end

Instance Method Details

#convert_values ⇒ Object

This method should convert all of the object’s attributes into the correct data type. You shouldn’t have to use this unless you are getting weird errors.



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# File 'lib/ascii_grid.rb', line 95

def convert_values
    @x_size = @x_size.to_i
    @y_size = @y_size.to_i
    @x_offset = @x_offset.to_i
    @y_offset = @y_offset.to_i
    @point = @point.to_s
    @blank_space = @blank_space.to_s
end

#make_grid(*points) ⇒ Object

This method prints the grid to the terminal. It takes an array of x and y values that will be printed as points.

Example:

ascii_grid.make_grid(1, 2, 3, -4)

This will print the points (1, 2) and (3, -4)

It also returns a string with the grid that was printed.



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# File 'lib/ascii_grid.rb', line 38

def make_grid(*points)
    self.convert_values()
    printed = ""
    if (@clear)
        system ('clear')
    end
    x_points = Array.new
    y_points = Array.new
    # Divide points
    (0..points.length - 1).each do |position|
        if (position % 2 == 0)
            x_points.push(points[position].to_i)
        else
            y_points.push(points[position].to_i)
        end
    end
    # Start loop
    (0..@y_size.to_i).each do |current_y|
        (0..@x_size.to_i).each do |current_x|
            # Setup
            print_fill = true
            relative_x = current_x - @x_offset
            relative_y = @y_offset - current_y
            point_amount = x_points.length - 1
            # Check point
            (0..point_amount.to_i).each do |position_point|
                if (x_points[position_point] == relative_x)
                    if (y_points[position_point] == relative_y)
                        printed << @point.to_s
                        print_fill = false
                    end
                end
            end
            # Fill
            if (print_fill)
                if (@x_offset == current_x)
                    printed << "|"
                elsif (@y_offset == current_y)
                    printed << "-"
                else
                    printed << @blank_space.to_s
                end
            end
            if (y_offset == current_y && current_x != @x_size)
                printed << "-"
            else
                printed << " "
            end
        end
        printed << "\n"
    end
    print printed
    return printed
end