35e871599c
The prop library was costing players more than it was worth. hunyuan3d hands back ~120,000 triangles and 1024px textures per object, so a COOKING POT was a 4MB download — and the fryer bench, which loads a pot, a basket and a rack, made a phone fetch 13MB before it could show you anything. Right after shipping touch controls, that is the wrong bill. scripts/optimise-models.sh: simplify to 10% of the triangles with a 0.002 error bound, textures to 512. Across 51 models that is 214MB → 47MB, and at the distance this game frames anything, the before and after screenshots are indistinguishable — I checked the pot at full frame before trusting it on the rest. The fryer bench now costs under 3MB. The script skips anything already under the threshold, so a second run cannot grind an optimised mesh into mush; delete the file and re-run gen-assets.sh to go back to an original. Regression sweep after: toast scene pristine, grill 9.4, pan 8.0, steak 9.4, bruschetta 9.6, air fryer 9.5, chips 10.0, pasta 10.0, eggs 10.0. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
48 lines
1.8 KiB
Bash
Executable File
48 lines
1.8 KiB
Bash
Executable File
#!/bin/bash
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# optimise-models.sh — shrink the generated GLBs for the web.
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#
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# hunyuan3d hands back ~120k triangles and 1024px textures per prop, which is
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# ~4MB of download for a cooking pot. Simplified to 10% of the triangles with a
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# 0.002 error bound and 512px textures, the same pot is ~800KB and looks
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# identical at the distances this game shows it from. The fryer bench alone
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# went from a 13MB download to under 3MB.
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#
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# Idempotence guard: anything already under the threshold is skipped, so a
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# second run cannot simplify an already-simplified mesh into mush. Delete the
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# file and re-run gen-assets.sh to start from the original.
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set -uo pipefail
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cd "$(dirname "$0")/.."
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MODELS=public/assets/models
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SKIP_UNDER=${SKIP_UNDER:-1200000} # bytes; optimised props land well under this
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RATIO=${RATIO:-0.1}
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ERROR=${ERROR:-0.002}
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TEX=${TEX:-512}
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GT="npx --yes @gltf-transform/cli@4.4.2"
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TMP=$(mktemp -d)
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trap 'rm -rf "$TMP"' EXIT
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before=0; after=0; done_n=0; skip_n=0
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for f in "$MODELS"/*.glb; do
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[ -e "$f" ] || continue
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name=$(basename "$f")
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sz=$(stat -f%z "$f" 2>/dev/null || stat -c%s "$f")
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before=$((before + sz))
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if [ "$sz" -lt "$SKIP_UNDER" ]; then
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echo " = $name already lean ($((sz/1024))KB)"
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after=$((after + sz)); skip_n=$((skip_n + 1)); continue
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fi
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if $GT simplify "$f" "$TMP/a.glb" --ratio "$RATIO" --error "$ERROR" >/dev/null 2>&1 \
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&& $GT resize "$TMP/a.glb" "$TMP/b.glb" --width "$TEX" --height "$TEX" >/dev/null 2>&1; then
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mv "$TMP/b.glb" "$f"
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nsz=$(stat -f%z "$f" 2>/dev/null || stat -c%s "$f")
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after=$((after + nsz)); done_n=$((done_n + 1))
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echo " + $name $((sz/1024))KB → $((nsz/1024))KB"
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else
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echo " ! $name FAILED — left untouched"
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after=$((after + sz))
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fi
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done
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echo "----"
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echo "optimised $done_n, skipped $skip_n"
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echo "total $((before/1048576))MB → $((after/1048576))MB"
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