ref: 362bba7642431d87371cb86c9442e7636fcd287b dir: /maps/SeafoamIslandsB4F.blk/
.vvu..v - v..vvvvvv, -a ..vv|vvvvv..vv, vvvvv..vvf +vvvvvv..vvvvvvvvvvv..vvuvvvv..v vL.