#!/usr/bin/env bash
# Compila o LCD Racer (o Formula 1 de joyrider3774, MIT, com mudancas nossas) para o Vircon32, do repositorio do autor
# (github.com/joyrider3774/formula1_vircon32, commit 6cfe82c) com a toolchain oficial pinada (Builds/vircon32/).
# Mudancas (ver lcd-racer-vircon32/NOTICE.txt): nome ("Formula 1" e marca registrada: titulo da ROM e uma linha da
# abertura, lcd-racer.patch), sons CC BY-NC-ND de terceiros trocados por sons nossos e fundo (foto de origem desconhecida)
# trocado por um desenho nosso, ambos de gen-assets.py (precisa do Pillow: artifacts/tools/venv).
# Dois builds seguidos; os dois .v32 precisam ter o mesmo SHA-256.
#   src/FredGames.Bundler/Builds/vircon32/install-toolchain.sh   # uma vez
#   src/FredGames.Bundler/Builds/build-lcd-racer-vircon32.sh
# Saida: artifacts/build/lcd-racer-vircon32/lcd-racer-vircon32-6cfe82c.v32 e ...-src.tar.gz
set -euo pipefail
here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
. "$here/vircon32/env.sh"
[ -x "$V32_TOOLS/compile" ] || "$here/vircon32/install-toolchain.sh"
SLUG=lcd-racer-vircon32
SRC_URL=https://github.com/joyrider3774/formula1_vircon32/archive/6cfe82ccd3e645b0fb57a475cdd793de86feb7af.tar.gz
SRC_SHA256=6ca22673ec7c7b1a3bae374b5d24f0bd1c67cf97b8bd95f4011f088b8c9e17fb
OUT_NAME=lcd-racer-vircon32-6cfe82c
PY="$v32_root/artifacts/tools/venv/bin/python"
out="$v32_root/artifacts/build/$SLUG"
tgz="$out/cache/formula1_vircon32-6cfe82c.tar.gz"
mkdir -p "$out/cache"
[ -f "$tgz" ] || curl -fsSL "$SRC_URL" -o "$tgz"
echo "$SRC_SHA256  $tgz" | shasum -a 256 -c - >/dev/null

prepare() { # $1 = pasta
  rm -rf "$1"; mkdir -p "$1/lcd-racer"
  tar -xzf "$tgz" -C "$1/lcd-racer" --strip-components 1
  local g="$1/lcd-racer"
  rm -rf "$g/gimp" "$g/screenshots" "$g/README.md" "$g/assets/sounds"
  ( cd "$g" && patch -p1 -s < "$here/lcd-racer-vircon32/lcd-racer.patch" )
  "$PY" -I "$here/lcd-racer-vircon32/gen-assets.py" "$g"
  cp "$here/lcd-racer-vircon32/NOTICE.txt" "$here/lcd-racer-vircon32/gen-assets.py" "$here/lcd-racer-vircon32/lcd-racer.patch" "$g/"
}
for i in 1 2; do
  prepare "$out/tree$i"
  (
    cd "$out/tree$i/lcd-racer"; mkdir -p obj bin
    export PATH="$V32_TOOLS:$PATH"
    compile src/formula1.c -o obj/formula1.asm
    assemble obj/formula1.asm -o obj/formula1.vbin
    for t in background bigfont lcdfont enemy player; do png2vircon assets/graphics/$t.png -o obj/$t.vtex; done
    for s in crash tick start gameover; do wav2vircon assets/sounds/$s.wav -o obj/$s.vsnd; done
    packrom Formula1.xml -o bin/Formula1.v32
  ) >"$out/build$i.log" 2>&1 || { tail -20 "$out/build$i.log" >&2; exit 1; }
done
a="$(shasum -a 256 "$out/tree1/lcd-racer/bin/Formula1.v32" | cut -d' ' -f1)"
b="$(shasum -a 256 "$out/tree2/lcd-racer/bin/Formula1.v32" | cut -d' ' -f1)"
[ "$a" = "$b" ] || { echo "Dois builds deram ROMs diferentes ($a x $b)" >&2; exit 1; }
cp "$out/tree1/lcd-racer/bin/Formula1.v32" "$out/$OUT_NAME.v32"
prepare "$out/srctree"
files=(); while IFS= read -r -d '' f; do files+=("$f"); done < <(cd "$out/srctree" && find lcd-racer -type f -print0)
python3 -I "$here/sprig-web/pack-source.py" "$out/$OUT_NAME-src.tar.gz" "$out/srctree" "${files[@]}"
rm -rf "$out/tree1" "$out/tree2" "$out/srctree"
echo "$a  $out/$OUT_NAME.v32 (dois builds iguais)"