Dimond Formula

[Mr.Mo]

Hello,

I'm trying to create a tile based(32*32) diamond shape on the map but I'm having a hard time. At first I wanted an ellipse but then figured out that it didn't work/look so well, except for movement(in a TBS).

Here is the ellipse:

Spoiler

http://www.unknowncoders.com/rmxp/screenshots/ellipse.PNG[/img]

Here is what I want:
http://www.unknowncoders.com/rmxp/scree ... elpdim.PNG[/img]

Here is the ellipse code/formula:

  #-----------------------------------------------------------------------------
  # * Calculate Tiles - Ellipse
  #-----------------------------------------------------------------------------   
  def calculate_tiles(h_r, v_r, center,c_pass=true)
    @current_tiles = {}
    if v_r >= h_r
      for current_v in 1..v_r
        for current_h in 1..h_r
          calculate_tile(current_h,current_v, center,c_pass)
        end
      end
    else
      for current_h in 1..h_r
        for current_v in 1..v_r
          calculate_tile(current_h,current_v, center,c_pass)
        end
      end
    end
  end
  #-----------------------------------------------------------------------------
  # * Calculate Tile Pos
  #----------------------------------------------------------------------------- 
  def calculate_tile(h_r, v_r, center,c_pass)
    for angle in 0...360
      x = Math.cos(angle)*h_r + center.x
      y = Math.sin(angle)*v_r + center.y
      # Check if passible
      next unless center.tbs_passable?(x.round,y.round,0,c_pass)
      @current_tiles.push([x.round, y.round])
    end
  end

 

[Freakboy]

  #-----------------------------------------------------------------------------
  # * Calculate Tiles - Diamond
  #-----------------------------------------------------------------------------   
  def calculate_tiles(range)
    index = range
    array = [ ]
    height = index * 2 + 1
    for i in 0..(height-1)/2
      width = i * 2 + 1
      x = (height - width / 2 - 1) - 1
      array.push([x, i, width])
    end
    b = array.size
    for i in 0...b-1
      array.push(array[width - b - i - 1])
    end
    c = [ ]
    for y in 0...array.size
      x = array[y][0]
      b = array[y][2]
      for i in 0...b
        c << [x+i, y]
      end
    end
    c.each { |tile| @tiles << tile }
  end

it's a big mess but it works