parts:
    "r": recording "data/maps/wilderness/recs/roller000.fus"
    "r": "data/maps/demo/vert.fus"

collmap:
    ;;
    ;;       ? - +   +   + - +    [r]
    ;;      /*\*/*\     /*\*/*\
    ;; .   + -(+)- + - + - + - +
    ;;    /*\*/*\*/*\*/*\*/*\*/
    ;;   + - + - + - + - + - +
    ;;    \*/*\*/*\*/*\*/
    ;;     + - + - + - +
    ;;          \*/*\*/
    ;;           + - +
    ;;