EXPCALIBUR-CTF — The Arena
==========================

There is no map file to ship: the arena is generated deterministically INSIDE
the engine (built into `bin/expc-run`) from a fixed seed, so every run — local
or on the server — uses the byte-identical map.

Dimensions
----------
  Tiles          96 x 96
  Tile size      64 px
  World          6144 x 6144 px   (MAP_SIZE = 6144; coordinates are integer px)
  Map seed       20240629         (fixed literal, never varies per run)
  Spawn point    (3104, 3104)     (arena centre)

Layout
------
  - A solid 2-tile-thick border ring around the whole map (impassable, water).
  - A deterministic rock/bush scatter over the interior, drawn from the fixed
    map seed: each interior tile rolls a value 0..99 — a small fraction become
    solid rock, a few more become bush (which slows movement).
  - The central spawn arena (a square around the centre) is kept clear of rocks
    and bush so the hero always starts in open ground.

Because the map seed is a fixed literal — separate from the per-run gameplay
seed you pass with `--seed` — the terrain is the same on every seed. Only the
enemy/gem spawns and boss schedule vary with the run seed.

You do not need this file to write a bot; it is here so you know the ground you
are standing on. The runner reads none of this — it rebuilds the map itself.
