#!/usr/bin/env bash
set -euo pipefail

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
OUTPUT_DIR="${1:-}"

if [[ -z "$OUTPUT_DIR" ]]; then
    echo "Usage: $(basename "$0") <output-dir>" >&2
    exit 2
fi

if ! command -v gxc >/dev/null 2>&1; then
    echo "ERROR: gxc not found in PATH." >&2
    echo "Download gxc from https://github.com/OpenRCT2/libsawyer/releases" >&2
    exit 1
fi

mkdir -p "$OUTPUT_DIR"

gxc build "$OUTPUT_DIR/g2.dat" "$ROOT_DIR/resources/g2/sprites.json"
gxc build "$OUTPUT_DIR/palettes.dat" "$ROOT_DIR/resources/palettes/sprites.json"
gxc build "$OUTPUT_DIR/fonts.dat" "$ROOT_DIR/resources/fonts/sprites.json"
gxc build "$OUTPUT_DIR/tracks.dat" "$ROOT_DIR/resources/tracks/sprites.json"