#!/usr/bin/env bash
# Refaz public/jogo/itens.webp (atlas 2x2 de 512x512) a partir de 3d/itens/*.png.
set -euo pipefail
cd "$(dirname "$0")/.."
FUZZ="${FUZZ:-6%}"
Q="${Q:-90}"
TMP="$(mktemp -d)"
trap 'rm -rf "$TMP"' EXIT
OUT=public/jogo/itens.webp
CONF=/home/evandro/tmp/jogo
mkdir -p "$CONF"

for n in municao kit cafe bateria; do
  # fundo por preenchimento a partir dos 4 cantos (sem limiar global)
  magick "3d/itens/$n.png" -alpha set -fuzz "$FUZZ" -fill none \
    -draw "alpha 0,0 floodfill" -draw "alpha 1023,0 floodfill" \
    -draw "alpha 0,1023 floodfill" -draw "alpha 1023,1023 floodfill" \
    -channel A -morphology Erode Disk:1 -blur 0x0.7 +channel \
    -trim +repage \
    -bordercolor none -background none -gravity center \
    -resize 215x215 \
    -extent 256x256 "$TMP/$n.png"
done

magick -size 512x512 xc:none \
  "$TMP/municao.png" -geometry +0+0 -composite \
  "$TMP/kit.png" -geometry +256+0 -composite \
  "$TMP/cafe.png" -geometry +0+256 -composite \
  "$TMP/bateria.png" -geometry +256+256 -composite \
  -define webp:alpha-quality=100 -define webp:method=6 -quality "$Q" "$OUT"

magick -size 512x512 xc:"#808080" "$OUT" -composite "$CONF/itens-atlas-cinza.png"
magick -size 512x512 xc:"#d00000" "$OUT" -composite "$CONF/itens-atlas-vermelho.png"
ls -l "$OUT"