parts:
    "e": "data/maps/demo/tiles/hex_vec4/edge.fus"
    "E": "data/maps/demo/tiles/hex_vec4/edge_r.fus"
    "q": "data/maps/demo/tiles/hex_vec4/sq.fus"
    "Q": "data/maps/demo/tiles/hex_vec4/sq_r.fus"
    "t": "data/maps/demo/tiles/hex_vec4/tri.fus"
    "T": "data/maps/demo/tiles/hex_vec4/tri_r.fus"
    "d": "data/maps/demo/tiles/hex_vec4/dia.fus"
    "D": "data/maps/demo/tiles/hex_vec4/dia_r.fus"
collmap:
    ;;         .
    ;;
    ;;       .   .   .
    ;;
    ;;     .   .   .   .
    ;;
    ;;       .   ?   .   .      [t q^1 E^2]
    ;;
    ;;    (?)  .                [E T]