Tinkering with Code.

Build Bomberman Game in Elm

September 29, 2015

To learn something I often need an entire project. It’s not very nice to just read docs, and APIs etc. We all need to code. So this is me doing just that.

I will try to build something similar to Bomberman.

Render a simple map

We should have something to call a map. A list of lists of Booleans should be enough to start us off.

generateMap = [
    [ True, False, True, True, True, False],
    [True, False, False, False, True, True],
    [True, True, False, False, True, True],
    [True, False, True, True, True, True],
    [True, False, True, True, True, True]
  ]

To render those lists we can do the following.

renderMap : List ( List Bool) -> Element
renderMap map =
  map
    |> List.map renderRow
    |> List.map (flow right)
    |> flow down
    |> container (cellSize * columns) (cellSize * rows) topLeft


renderRow : List Bool -> List Element
renderRow row = List.map renderCell row

renderCell : Bool -> Element
renderCell on =
  spacer cellSize cellSize
  |> color (if on then (rgb 0 0 0) else (rgb 255 255 255))

It will render each cell in either black or white depending on the boolean value.

And finally a starting point:

cellSize = 10
(columns, rows) = (35, 35)

main : Element
main =
  renderMap generateMap

Start a server elm-reactor and check out http://0.0.0.0:8000/

I found an example of the Game of Life in elm. You can read it here.

Written by Simon Ström as a way to remember. It's a dev log of thinks I want to remember.