sokoban-move ( board move -- )

Vocabulary

gamelib.demos.sokoban

Inputs

board	an object
move	an object

Outputs

None

Definition

USING: combinators gamelib.board gamelib.demos.sokoban.layouts
kernel math.vectors ;

IN: gamelib.demos.sokoban

:: sokoban-move ( board move -- )
    board [ player = ] find-cell-pos
    :> player-pos player-pos move v+
    :> new-pos board new-pos get-cell :> adjacent-cell {
        {
            [ adjacent-cell crate-cell cell-contains-instance? ]
            [
                adjacent-cell crate-cell get-instance-from-cell
                :> crate board player-pos move crate move-crate
            ]
        }
        {
            [
                adjacent-cell is-empty? adjacent-cell goal
                cell-contains? or
            ]
            [ board player-pos move player move-object drop ]
        }
        [ ]
    } cond ;