65da434678
tools/fetch_dem.py pulls the open AWS terrarium elevation tiles for each level's bbox (derived from the OSM geometry itself -- the fetch bboxes were never recorded) and writes an f32 heightmap. The builder bilinear-samples it: roads/footpaths/crossings drape (subdivided to ~8 m so long OSM segments stop chording across curved ground), buildings lift rigidly to the lowest terrain under their footprint with a 2 m foundation skirt, trees/props/planters ride their own base heights, and the flat ground slab becomes a real terrain mesh. Bridges get an explicit deck profile (lerp between end heights plus a hump) instead of draping down into the river, the truss follows the deck, and the Bradfield Highway now genuinely flies over Kemp Place -- the game has an underpass. Kangaroo Point's cliffs are an actual 20 m drop, Edward Street climbs to 55 m at Spring Hill. Junction events bake spawn/convoy heights (osm_junction.py grew a pure-python DEM sampler); the game respects marker heights everywhere it used to hardcode ground=0. Bugs the terrain surfaced, all found by measurement: - Long road segments chorded across curved ground: the car visually sank to its windows mid-block. Fixed by subdividing draped ribbons. - The 9 m terrain grid aliases cliff edges and bulged metres ABOVE the finely draped roads: a car spawning there was inside the terrain sheet and got depenetrated through the floor into the void (y = -710). Fixed by giving roads real collision and carving the terrain grid down wherever a draped road sample lands (11k+ carve samples on Kangaroo Point alone). - The junction validator and tuner drove throttle-only, which cross-slope drift turned into 40-86 m misses; they now hold aim like a player would. - Edward x Elizabeth launched down a 17% grade, went airborne at the crest and wedged off-street: unwinnable geometry, not a bug. Swapped for Elizabeth x George on the flat lower CBD. All 9 junctions validate. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
24 lines
1.4 KiB
Bash
Executable File
24 lines
1.4 KiB
Bash
Executable File
#!/bin/bash
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# Regenerate every OSM crash-junction event. The spec strings live here because
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# they were previously nowhere -- the original invocations weren't recorded, and
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# recovering "which two streets is this event?" meant re-deriving them from the
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# generated geometry. Don't let that happen twice.
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#
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# woolies_carpark/junctions.json is hand-authored (Trolley Run) and not touched.
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set -e
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cd "$(dirname "$0")/.."
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C="${OSM_CACHE:-$HOME/.cache/burnout_osm}"
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[ -d "$C" ] || { echo "no OSM cache at $C -- see README"; exit 1; }
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while IFS='|' read -r id json lat lon specs; do
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[ -z "$id" ] && continue
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IFS=';' read -ra SPEC <<< "$specs"
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python3 tools/osm_junction.py "$C/$json" "levels/$id/junctions.json" "$lat" "$lon" "${SPEC[@]}"
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done <<'EOF'
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queen_st_mall|brisbane_cbd.json|-27.4699|153.0251|Albert x Adelaide|Albert Street|Adelaide Street;Elizabeth x George|Elizabeth Street|George Street
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southbank|southbank.json|-27.4775|153.0215|Melbourne x Merivale|Melbourne Street|Merivale Street;Grey x Glenelg|Grey Street|Glenelg Street
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albert_parklands|albert_parklands.json|-27.4740|153.0280|Alice x George|Alice Street|George Street;Margaret x Edward|Margaret Street|Edward Street
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story_bridge|story_bridge.json|-27.4635|153.0355|Bridge Approach|Bradfield Highway|Kemp Place
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kangaroo_point|kangaroo_point.json|-27.4780|153.0345|Cliffs Corner|River Terrace|Main Street
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EOF
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echo "junctions rebuilt (woolies_carpark left alone -- hand-authored)"
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