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Real terrain: DEM elevation under every level

Browse Source 
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>
This commit is contained in:
m3ultra 2026-07-30 15:08:42 +10:00
parent 30d5cfd846
commit 65da434678
24 changed files with 1469 additions and 792 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

498
levels/albert_parklands/junctions.json
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21
src/game.gd
View File

@ -81,6 +81,7 @@ var busts := 0
var escapes := 0
var drag_end: Vector3
var drag_end_y := 0.0
var drag_len := 0.0
var gear := 1
var revs := 0.0
@ -165,7 +166,7 @@ func _ready() -> void:
var sp: Dictionary = junction["spawn"]
var jf := Vector3(sp["dx"], 0, sp["dz"]).normalized()
car.transform = Transform3D(Basis.looking_at(jf, Vector3.UP),
_clear_spawn(Vector3(sp["x"], 0.7, sp["z"]), jf))
_clear_spawn(Vector3(sp["x"], float(sp.get("y", 0.0)) + 0.7, sp["z"]), jf))
car.hold_wreck = true
# The marker test lives in the branch condition, not inside it: as an `elif`
# with the test inside, a level without a drag strip (the code-built carpark)
@ -174,7 +175,8 @@ func _ready() -> void:
elif mode == "drag" and _drag_markers(level).size() == 2:
var mk := _drag_markers(level)
drag_end = Vector3(mk[1].global_position.x, 0.0, mk[1].global_position.z)
var from := Vector3(mk[0].global_position.x, 0.7, mk[0].global_position.z)
drag_end_y = mk[1].global_position.y
var from := Vector3(mk[0].global_position.x, mk[0].global_position.y + 0.7, mk[0].global_position.z)
var dir := (drag_end - Vector3(from.x, 0, from.z)).normalized()
drag_len = Vector3(from.x, 0, from.z).distance_to(drag_end)
car.transform = Transform3D(Basis.looking_at(dir, Vector3.UP),
@ -189,7 +191,8 @@ func _ready() -> void:
var f := -t.basis.z
f.y = 0.0
f = f.normalized() if f.length_squared() > 0.001 else Vector3.FORWARD
car.transform = Transform3D(Basis.looking_at(f, Vector3.UP), Vector3(t.origin.x, 0.7, t.origin.z))
car.transform = Transform3D(Basis.looking_at(f, Vector3.UP),
Vector3(t.origin.x, t.origin.y + 0.7, t.origin.z))
else:
car.position = Vector3.UP * 0.6
add_child(car)
@ -244,10 +247,10 @@ func _ready() -> void:
var strip := Path3D.new()
var sc := Curve3D.new()
sc.add_point(car.global_position + lane)
sc.add_point(drag_end + Vector3.UP * 0.7 + lane)
sc.add_point(drag_end + Vector3.UP * (drag_end_y + 0.7) + lane)
# a 2-point curve makes rival.gd's fmod() lookahead wrap to the start once
# it nears the end, spinning the car around -- extend past the line instead
sc.add_point(drag_end + Vector3.UP * 0.7 + lane + fwd * 120.0)
sc.add_point(drag_end + Vector3.UP * (drag_end_y + 0.7) + lane + fwd * 120.0)
strip.curve = sc
add_child(strip)
var pool := Registry.cars().values()
@ -296,7 +299,8 @@ func _ready() -> void:
var path := Path3D.new()
var curve := Curve3D.new()
for p in stream["pts"]:
curve.add_point(Vector3(p[0], 0, p[1]))
# third component (when baked) is terrain height
curve.add_point(Vector3(p[0], float(p[2]) if p.size() > 2 else 0.0, p[1]))
path.curve = curve
add_child(path)
var L := curve.get_baked_length()
@ -447,7 +451,8 @@ func _spawn_smashables(level: Node) -> void:
add_child(b)
var t: Transform3D = (m as Node3D).global_transform
b.global_transform = Transform3D(
Basis(Vector3.UP, t.basis.get_euler().y), Vector3(t.origin.x, 0.75, t.origin.z))
Basis(Vector3.UP, t.basis.get_euler().y),
Vector3(t.origin.x, t.origin.y + 0.72, t.origin.z))
b.sleeping = true
n += 1
for prefix in SMASHABLE:
@ -514,7 +519,7 @@ func _spawn_smashables(level: Node) -> void:
var t: Transform3D = (m as Node3D).global_transform
b.global_transform = Transform3D(
Basis(Vector3.UP, t.basis.get_euler().y),
Vector3(t.origin.x, size.y * 0.5 + 0.02, t.origin.z))
Vector3(t.origin.x, t.origin.y + size.y * 0.5 + 0.02, t.origin.z))
b.sleeping = true
n += 1

2
tools/build_all_junctions.sh
View File

@ -14,7 +14,7 @@ while IFS='|' read -r id json lat lon specs; do
IFS=';' read -ra SPEC <<< "$specs"
python3 tools/osm_junction.py "$C/$json" "levels/$id/junctions.json" "$lat" "$lon" "${SPEC[@]}"
done <<'EOF'
queen_st_mall|brisbane_cbd.json|-27.4699|153.0251|Albert x Adelaide|Albert Street|Adelaide Street;Edward x Elizabeth|Edward Street|Elizabeth Street
queen_st_mall|brisbane_cbd.json|-27.4699|153.0251|Albert x Adelaide|Albert Street|Adelaide Street;Elizabeth x George|Elizabeth Street|George Street
southbank|southbank.json|-27.4775|153.0215|Melbourne x Merivale|Melbourne Street|Merivale Street;Grey x Glenelg|Grey Street|Glenelg Street
albert_parklands|albert_parklands.json|-27.4740|153.0280|Alice x George|Alice Street|George Street;Margaret x Edward|Margaret Street|Edward Street
story_bridge|story_bridge.json|-27.4635|153.0355|Bridge Approach|Bradfield Highway|Kemp Place

242
tools/build_level_osm.py
View File

@ -41,6 +41,50 @@ TEX = os.path.join(os.path.dirname(os.path.abspath(__file__)), "..", "assets", "
M_LAT = 110574.0
M_LON = 111320.0 * math.cos(math.radians(LAT0))
# ---- real terrain (tools/fetch_dem.py output next to the area json) --------
import numpy as _np
DEM = None
DEM_META = None
_dem_base = src[:-5] if src.endswith(".json") else src
if os.path.exists(_dem_base + "_dem.f32"):
DEM_META = json.load(open(_dem_base + "_dem.json"))
DEM = _np.fromfile(_dem_base + "_dem.f32", dtype="<f4").reshape(
DEM_META["h"], DEM_META["w"])
print("DEM loaded: %dx%d, %.1f..%.1f m" % (DEM_META["w"], DEM_META["h"],
float(DEM.min()), float(DEM.max())))
def H(x, y):
"""Terrain height at level-local metres, bilinear. 0 when no DEM."""
if DEM is None:
return 0.0
lon = LON0 + x / M_LON
lat = LAT0 + y / M_LAT
u = (lon - DEM_META["min_lon"]) / (DEM_META["max_lon"] - DEM_META["min_lon"]) * (DEM_META["w"] - 1)
v = (DEM_META["max_lat"] - lat) / (DEM_META["max_lat"] - DEM_META["min_lat"]) * (DEM_META["h"] - 1)
u = min(max(u, 0.0), DEM_META["w"] - 1.001)
v = min(max(v, 0.0), DEM_META["h"] - 1.001)
x0, y0 = int(u), int(v)
fx, fy = u - x0, v - y0
a = DEM[y0, x0] * (1 - fx) + DEM[y0, x0 + 1] * fx
b = DEM[y0 + 1, x0] * (1 - fx) + DEM[y0 + 1, x0 + 1] * fx
return float(a * (1 - fy) + b * fy)
WATER_Z = 0.3 # river surface: above the riverbed's DEM zero, below banks
CARVE = [] # (x, y, h) of every draped road/path sample: terrain may not rise above these
def bridge_profile(pts, named=False):
"""Deck heights for a bridge way: lerp between end terrain plus a hump, so
the deck spans the river instead of draping down into it."""
cum = [0.0]
for i in range(1, len(pts)):
cum.append(cum[-1] + math.hypot(pts[i][0] - pts[i - 1][0], pts[i][1] - pts[i - 1][1]))
T = max(cum[-1], 0.001)
hA, hB = H(*pts[0]), H(*pts[-1])
hump = 16.0 if named else 3.5
return [max(H(*pts[i]),
hA + (hB - hA) * (cum[i] / T) + hump * math.sin(math.pi * cum[i] / T))
for i in range(len(pts))]
GROUND_FLOOR = 4.2 # height of the glazed shopfront band
AWNING_Z = 3.75 # underside of the street awning
AWNING_OUT = 2.3 # how far it cantilevers over the footpath
@ -228,10 +272,11 @@ def ring_ccw(pts):
for i in range(len(r)))
return r if area > 0 else list(reversed(r))
def poly_bm(pts, z, h=0.0):
"""Filled (optionally extruded) polygon bmesh from closed pt list."""
def poly_bm(pts, z, h=0.0, drape=False):
"""Filled (optionally extruded) polygon bmesh from closed pt list.
drape=True adds terrain height per vertex (parks); flat otherwise (water)."""
bm = bmesh.new()
verts = [bm.verts.new((x, y, z)) for x, y in pts[:-1]]
verts = [bm.verts.new((x, y, z + (H(x, y) if drape else 0.0))) for x, y in pts[:-1]]
face = bm.faces.new(verts)
if h > 0.0:
res = bmesh.ops.extrude_face_region(bm, geom=[face])
@ -241,9 +286,27 @@ def poly_bm(pts, z, h=0.0):
bmesh.ops.triangulate(bm, faces=bm.faces)
return bm
def ribbon(bm, pts, half, z, mat=0, drop=None, offset=0.0):
def _subdivide(pts, step=8.0):
"""Split long segments so draped ribbons follow the terrain instead of
chording across it -- an OSM segment can run 100+ m, and a straight strip
over curved ground diverges from the collision mesh by metres. That read
in-game as the car sinking to its windows mid-block."""
out = [pts[0]]
for i in range(1, len(pts)):
(x1, y1), (x2, y2) = out[-1], pts[i]
L = math.hypot(x2 - x1, y2 - y1)
n = max(int(L / step), 1)
for k in range(1, n + 1):
out.append((x1 + (x2 - x1) * k / n, y1 + (y2 - y1) * k / n))
return out
def ribbon(bm, pts, half, z, mat=0, drop=None, offset=0.0, zs=None):
"""Strip of width 2*half along a polyline, shifted sideways by `offset`.
`drop` chamfers the edges down to z-PATH_H."""
`drop` chamfers the edges down to z-PATH_H. Heights come from the terrain
(per segment END, not per corner, so roads don't twist across their width);
`zs` overrides with explicit per-point heights (bridge decks)."""
if zs is None and DEM is not None:
pts = _subdivide(pts)
for i in range(len(pts) - 1):
(x1, y1), (x2, y2) = pts[i], pts[i + 1]
dx, dy = x2 - x1, y2 - y1
@ -251,79 +314,88 @@ def ribbon(bm, pts, half, z, mat=0, drop=None, offset=0.0):
if L < 0.1:
continue
nx, ny = -dy / L, dx / L
h1 = zs[i] if zs else H(x1, y1)
h2 = zs[i + 1] if zs else H(x2, y2)
if zs is None:
CARVE.append((x1, y1, h1))
CARVE.append((x2, y2, h2))
if offset:
x1, y1 = x1 + nx * offset, y1 + ny * offset
x2, y2 = x2 + nx * offset, y2 + ny * offset
if drop is None:
quad(bm, [(x1 + nx * half, y1 + ny * half, z), (x1 - nx * half, y1 - ny * half, z),
(x2 - nx * half, y2 - ny * half, z), (x2 + nx * half, y2 + ny * half, z)], mat)
quad(bm, [(x1 + nx * half, y1 + ny * half, z + h1), (x1 - nx * half, y1 - ny * half, z + h1),
(x2 - nx * half, y2 - ny * half, z + h2), (x2 + nx * half, y2 + ny * half, z + h2)], mat)
else:
inner = max(half - PATH_CHAMFER, half * 0.35)
for s0, s1, z0, z1 in ((half, inner, z - drop, z), (inner, -inner, z, z),
(-inner, -half, z, z - drop)):
quad(bm, [(x1 + nx * s0, y1 + ny * s0, z0), (x1 + nx * s1, y1 + ny * s1, z1),
(x2 + nx * s1, y2 + ny * s1, z1), (x2 + nx * s0, y2 + ny * s0, z0)], mat)
for s0, s1, d0, d1 in ((half, inner, drop, 0.0), (inner, -inner, 0.0, 0.0),
(-inner, -half, 0.0, drop)):
quad(bm, [(x1 + nx * s0, y1 + ny * s0, z - d0 + h1), (x1 + nx * s1, y1 + ny * s1, z - d1 + h1),
(x2 + nx * s1, y2 + ny * s1, z - d1 + h2), (x2 + nx * s0, y2 + ny * s0, z - d0 + h2)], mat)
# ------------------------------------------------------------------- props
def add_tree(fol, jac, frond, trunk, x, y, rng):
"""Fig (broad layered canopy), jacaranda (same shape, purple), or palm."""
z0 = H(x, y)
if rng.random() < 0.18:
h = rng.uniform(6.5, 9.5)
cone(trunk, (x, y, h / 2), 0.22, 0.14, h, 7)
cone(trunk, (x, y, z0 + h / 2), 0.22, 0.14, h, 7)
for i in range(7):
a = i * math.tau / 7 + rng.uniform(-0.25, 0.25)
reach = rng.uniform(1.8, 2.5)
tip = Vector((x + math.cos(a) * reach, y + math.sin(a) * reach, h - rng.uniform(0.8, 1.6)))
beam(frond, Vector((x, y, h)), tip, 0.7, 0.12)
tip = Vector((x + math.cos(a) * reach, y + math.sin(a) * reach, z0 + h - rng.uniform(0.8, 1.6)))
beam(frond, Vector((x, y, z0 + h)), tip, 0.7, 0.12)
else:
# canopy well clear of the roof line of a car, and built from three
# offset spheres so the silhouette breaks up instead of reading as a ball
clear = rng.uniform(3.6, 4.8)
r = rng.uniform(1.7, 2.5)
cone(trunk, (x, y, (clear + 1.0) / 2), 0.20, 0.13, clear + 1.0, 7)
cone(trunk, (x, y, z0 + (clear + 1.0) / 2), 0.20, 0.13, clear + 1.0, 7)
target = jac if rng.random() < 0.22 else fol # jacaranda season is eternal here
for i in range(3):
off = Vector((rng.uniform(-1, 1), rng.uniform(-1, 1), 0)) * r * 0.42
blob(target, (x + off.x, y + off.y, clear + r * (0.45 + 0.34 * i)),
blob(target, (x + off.x, y + off.y, z0 + clear + r * (0.45 + 0.34 * i)),
(r * rng.uniform(0.75, 1.05), r * rng.uniform(0.75, 1.05), r * rng.uniform(0.55, 0.75)),
subdiv=2)
def add_bench(bm, x, y, rng):
z0 = H(x, y)
a = rng.random() * math.tau
d = Vector((math.cos(a), math.sin(a), 0))
p = Vector((-d.y, d.x, 0))
for s in (-0.75, 0.75):
c = Vector((x, y, 0)) + d * s
c = Vector((x, y, z0)) + d * s
beam(bm, c + Vector((0, 0, 0.02)), c + Vector((0, 0, 0.45)), 0.36, 0.07)
a0 = Vector((x, y, 0.47)) - d * 0.95
a0 = Vector((x, y, z0 + 0.47)) - d * 0.95
slab(bm, [(a0 + p * 0.28).to_tuple(), (a0 - p * 0.28).to_tuple(),
(a0 - p * 0.28 + d * 1.9).to_tuple(), (a0 + p * 0.28 + d * 1.9).to_tuple()], 0.08)
def add_signal(bm, lens, x, y, rng):
"""Aussie traffic signal: pole, lantern head, mast arm with a second head.
Lenses go in their own bmesh so they can be emissive."""
z0 = H(x, y)
h = 3.9
cone(bm, (x, y, h / 2), 0.10, 0.08, h, 6)
cone(bm, (x, y, z0 + h / 2), 0.10, 0.08, h, 6)
a = rng.random() * math.tau
d = Vector((math.cos(a), math.sin(a), 0))
p = Vector((-d.y, d.x, 0))
for at, top in ((Vector((x, y, 0)) + p * 0.22, h - 0.15),
(Vector((x, y, 0)) + d * 3.6, h + 0.55)):
for at, top in ((Vector((x, y, z0)) + p * 0.22, z0 + h - 0.15),
(Vector((x, y, z0)) + d * 3.6, z0 + h + 0.55)):
# lantern housing + three stacked lenses
beam(bm, at + Vector((0, 0, top - 1.0)), at + Vector((0, 0, top)), 0.34, 0.34)
for i, m in enumerate((0, 1, 2)):
c = at + Vector((0, 0, top - 0.22 - i * 0.32))
# must clear beam()'s 0.05 m minimum length or the lens silently vanishes
beam(lens, c + d * 0.15, c + d * 0.28, 0.20, 0.20, m)
beam(bm, Vector((x, y, h + 0.4)), Vector((x, y, h + 0.4)) + d * 3.6, 0.13, 0.13) # mast arm
beam(bm, Vector((x, y, z0 + h + 0.4)), Vector((x, y, z0 + h + 0.4)) + d * 3.6, 0.13, 0.13) # mast arm
def add_power_pole(bm, wire_bm, x, y, prev, rng):
"""Timber power pole with a crossarm; wires sag to the previous pole."""
z0 = H(x, y)
h = 8.6
cone(bm, (x, y, h / 2), 0.19, 0.13, h, 6)
beam(bm, (x - 0.95, y, h - 0.5), (x + 0.95, y, h - 0.5), 0.11, 0.11)
tops = [Vector((x - 0.8, y, h - 0.38)), Vector((x, y, h - 0.05)), Vector((x + 0.8, y, h - 0.38))]
cone(bm, (x, y, z0 + h / 2), 0.19, 0.13, h, 6)
beam(bm, (x - 0.95, y, z0 + h - 0.5), (x + 0.95, y, z0 + h - 0.5), 0.11, 0.11)
tops = [Vector((x - 0.8, y, z0 + h - 0.38)), Vector((x, y, z0 + h - 0.05)), Vector((x + 0.8, y, z0 + h - 0.38))]
if prev is not None:
for a, b in zip(prev, tops):
mid = (a + b) / 2 - Vector((0, 0, (a - b).length * 0.045)) # catenary sag
@ -335,7 +407,7 @@ def add_shelter(bm, glassbm, x, y, rng):
a = rng.random() * math.tau
d = Vector((math.cos(a), math.sin(a), 0))
p = Vector((-d.y, d.x, 0))
c = Vector((x, y, 0))
c = Vector((x, y, H(x, y)))
for sd in (-1.8, 1.8):
for sp in (-1.1, 1.1):
f = c + d * sd + p * sp
@ -460,23 +532,27 @@ for e in d["elements"]:
bm = bmesh.new()
gf = 0.0 if qld else min(GROUND_FLOOR, h * 0.45)
# rigid terrain lift: base at the LOWEST terrain under the footprint so
# the uphill side cuts into the slope; walls run 2 m below base so no
# daylight shows under the downhill edge
bz = min(H(x, y) for x, y in ring)
for i in range(len(ring)):
(x1, y1), (x2, y2) = ring[i], ring[(i + 1) % len(ring)]
if gf > 0.0:
quad(bm, [(x1, y1, 0), (x2, y2, 0), (x2, y2, gf), (x1, y1, gf)], 2)
quad(bm, [(x1, y1, gf), (x2, y2, gf), (x2, y2, h), (x1, y1, h)], 0)
quad(bm, [(x1, y1, bz - 2.0), (x2, y2, bz - 2.0), (x2, y2, bz + gf), (x1, y1, bz + gf)], 2)
quad(bm, [(x1, y1, bz + gf), (x2, y2, bz + gf), (x2, y2, bz + h), (x1, y1, bz + h)], 0)
try:
bm.faces.new([bm.verts.new((x, y, h)) for x, y in ring]).material_index = 1
bm.faces.new([bm.verts.new((x, y, bz + h)) for x, y in ring]).material_index = 1
except ValueError:
pass
if not qld:
for i in range(len(ring)): # parapet caps the roof edge
(x1, y1), (x2, y2) = ring[i], ring[(i + 1) % len(ring)]
beam(bm, (x1, y1, h + 0.45), (x2, y2, h + 0.45), 0.35, 0.9, 0)
beam(bm, (x1, y1, bz + h + 0.45), (x2, y2, bz + h + 0.45), 0.35, 0.9, 0)
if h > 26: # rooftop plant room
cx = sum(p[0] for p in ring) / len(ring)
cy = sum(p[1] for p in ring) / len(ring)
beam(bm, (cx - 2.5, cy, h + 1.4), (cx + 2.5, cy, h + 1.4), 4.0, 2.8, 1)
beam(bm, (cx - 2.5, cy, bz + h + 1.4), (cx + 2.5, cy, bz + h + 1.4), 4.0, 2.8, 1)
bmesh.ops.triangulate(bm, faces=bm.faces)
add_obj("bld_%d-col" % e["id"], bm, [fac, M_CORRO if qld else M_ROOF, M_SHOP],
{0: 13.0 if not qld else 6.5, 1: 9.0 if not qld else 3.0, 2: 4.6})
@ -492,16 +568,16 @@ for e in d["elements"]:
mx, my = (ex1 + ex2) / 2, (ey1 + ey2) / 2
ux, uy = (ex2 - ex1) / eL, (ey2 - ey1) / eL
half = min(4.0, eL * 0.35)
a = Vector((mx - ux * half, my - uy * half, h + 2.6))
b = Vector((mx + ux * half, my + uy * half, h + 2.6))
a = Vector((mx - ux * half, my - uy * half, bz + h + 2.6))
b = Vector((mx + ux * half, my + uy * half, bz + h + 2.6))
bb = bill_bm[e["id"] % 3]
beam(bb, a, b, 0.25, 3.0)
beam(bb, Vector((mx, my, h)), Vector((mx, my, h + 1.4)), 0.3, 0.3)
beam(bb, Vector((mx, my, bz + h)), Vector((mx, my, bz + h + 1.4)), 0.3, 0.3)
# street awning over the footpath -- not every shop has one, and a whole
# street at one height in one colour reads as a painted stripe
if not qld and 6.0 < h < 45.0 and rng.random() < 0.7:
az = AWNING_Z + rng.uniform(-0.35, 0.5)
az = bz + AWNING_Z + rng.uniform(-0.35, 0.5)
amat = e["id"] % 3
out = AWNING_OUT * rng.uniform(0.85, 1.1)
for i in range(len(ring)):
@ -522,7 +598,7 @@ for e in d["elements"]:
if not closed:
continue
try:
bm = poly_bm(pts, -0.35)
bm = poly_bm(pts, WATER_Z)
except Exception:
continue
# ponytail: water is solid (-col) so cars skim it instead of falling forever
@ -534,11 +610,12 @@ for e in d["elements"]:
continue
ring = ring_ccw(pts)
bm = bmesh.new()
pz = min(H(x, y) for x, y in ring)
for i in range(len(ring)): # raised corten planter box
(x1, y1), (x2, y2) = ring[i], ring[(i + 1) % len(ring)]
quad(bm, [(x1, y1, 0), (x2, y2, 0), (x2, y2, 0.5), (x1, y1, 0.5)], 0)
quad(bm, [(x1, y1, pz), (x2, y2, pz), (x2, y2, pz + 0.5), (x1, y1, pz + 0.5)], 0)
try:
bm.faces.new([bm.verts.new((x, y, 0.5)) for x, y in ring]).material_index = 1
bm.faces.new([bm.verts.new((x, y, pz + 0.5)) for x, y in ring]).material_index = 1
except ValueError:
bm.free()
continue
@ -551,7 +628,7 @@ for e in d["elements"]:
if not closed:
continue
try:
bm = poly_bm(pts, 0.02)
bm = poly_bm(pts, 0.02, drape=True)
except Exception:
continue
add_obj("park_%d" % e["id"], bm, [M_GRASS], 14.0)
@ -579,8 +656,8 @@ for e in d["elements"]:
elif tags.get("natural") == "cliff":
bm = bmesh.new()
for i in range(len(pts) - 1):
beam(bm, Vector((pts[i][0], pts[i][1], 7.0)),
Vector((pts[i + 1][0], pts[i + 1][1], 7.0)), 2.0, 14.0)
beam(bm, Vector((pts[i][0], pts[i][1], H(*pts[i]) + 1.0)),
Vector((pts[i + 1][0], pts[i + 1][1], H(*pts[i + 1]) + 1.0)), 2.0, 14.0)
add_obj("cliff_%d-col" % e["id"], bm, [M_ROCK], 12.0)
counts["cliff"] += 1
@ -608,7 +685,10 @@ for e in d["elements"]:
wide = ROAD_W.get(hw, 6.0)
rkey = "mall" if hw == "pedestrian" else ("bus" if hw == "busway" else "road")
ribbon(road_bm[rkey], pts, wide / 2, 0.03)
deck = None
if tags.get("bridge") in ("yes", "viaduct") or (bridge_name and tags.get("name") == bridge_name):
deck = bridge_profile(pts, named=(tags.get("name") == bridge_name))
ribbon(road_bm[rkey], pts, wide / 2, 0.03, zs=deck)
counts["road"] += 1
if hw in ("residential", "unclassified"):
# timber power poles down one side with sagging wires -- the single
@ -661,8 +741,12 @@ for e in d["elements"]:
L = math.hypot(x2 - x1, y2 - y1)
for k in range(int(L / 9.0)):
t0, t1 = (k * 9.0 + 1.5) / L, (k * 9.0 + 5.0) / L
dz = None
if deck is not None:
dz = [deck[i] + (deck[i + 1] - deck[i]) * t0,
deck[i] + (deck[i + 1] - deck[i]) * t1]
ribbon(line_bm, [(x1 + (x2 - x1) * t0, y1 + (y2 - y1) * t0),
(x1 + (x2 - x1) * t1, y1 + (y2 - y1) * t1)], 0.09, 0.045)
(x1 + (x2 - x1) * t1, y1 + (y2 - y1) * t1)], 0.09, 0.045, zs=dz)
# street trees: OSM maps a fraction of what Brisbane actually has, so line the
# kerbs of named streets and the mall edges with our own, deterministically
@ -696,9 +780,9 @@ for tx, ty, seed in tree_sites:
add_tree(fol_bm, jac_bm, frond_bm, trunk_bm, tx, ty, random.Random(seed))
counts["tree"] += 1
add_obj("roads", road_bm["road"], [M_ROAD], 8.0)
add_obj("mall_paving", road_bm["mall"], [M_MALL], 4.0)
add_obj("busway", road_bm["bus"], [M_BUSRED], 8.0)
add_obj("roads-col", road_bm["road"], [M_ROAD], 8.0)
add_obj("mall_paving-col", road_bm["mall"], [M_MALL], 4.0)
add_obj("busway-col", road_bm["bus"], [M_BUSRED], 8.0)
add_obj("trees_foliage", fol_bm, [M_FOLIAGE], 0.9, smooth=True)
add_obj("trees_jacaranda", jac_bm, [M_JAC], 0.9, smooth=True)
add_obj("trees_fronds", frond_bm, [M_FOLIAGE], 0.9)
@ -736,13 +820,22 @@ if bridge_name:
s0, s1 = 0.175 * T, 0.825 * T
N = 26
bm = bmesh.new()
deck_zs = bridge_profile([(pp.x, pp.y) for pp in pts], named=True)
def deck_at(sd):
for i2 in range(1, len(dists)):
if dists[i2] >= sd:
f2 = (sd - dists[i2 - 1]) / max(dists[i2] - dists[i2 - 1], 0.001)
return deck_zs[i2 - 1] + (deck_zs[i2] - deck_zs[i2 - 1]) * f2
return deck_zs[-1]
samples = []
for i in range(N + 1):
t = i / N
p = at(s0 + (s1 - s0) * t)
sd = s0 + (s1 - s0) * t
p = at(sd)
p = Vector((p.x, p.y, deck_at(sd))) # truss base rides the deck
h = 4.0 + 16.0 * (math.exp(-((t - 0.32) / 0.10) ** 2) + math.exp(-((t - 0.68) / 0.10) ** 2)) \
+ 6.0 * math.sin(math.pi * t)
fwd = (at(min(s0 + (s1 - s0) * t + 4, T)) - p)
fwd = (at(min(sd + 4, T)) - p)
fwd.z = 0
fwd.normalize()
samples.append((p, Vector((-fwd.y, fwd.x, 0)), h))
@ -859,13 +952,52 @@ if level_id == "southbank":
bpy.context.collection.objects.link(obj_a)
print("grand arbour tendrils: %d" % n_t)
# ground slab sized to content (convex collider: huge trimesh tris break raycasts)
# ground: a terrain grid sampled from the DEM (or a flat slab when there is
# none). Small triangles are deliberate -- one huge trimesh tri breaks raycasts.
xs = [v.co.x for o in bpy.data.objects if o.type == "MESH" for v in o.data.vertices]
ys = [v.co.y for o in bpy.data.objects if o.type == "MESH" for v in o.data.vertices]
gx, gy = (min(xs) + max(xs)) / 2, (min(ys) + max(ys)) / 2
x0g, x1g = min(xs) - 50, max(xs) + 50
y0g, y1g = min(ys) - 50, max(ys) + 50
if DEM is not None:
STEP = 9.0
nx = max(int((x1g - x0g) / STEP), 2)
ny = max(int((y1g - y0g) / STEP), 2)
sx = (x1g - x0g) / nx
sy = (y1g - y0g) / ny
carve = _np.full((ny + 1, nx + 1), _np.inf, dtype=_np.float64)
for cx, cy, ch in CARVE:
gi = int(round((cx - x0g) / sx))
gj = int(round((cy - y0g) / sy))
if 0 <= gi <= nx and 0 <= gj <= ny:
carve[gj, gi] = min(carve[gj, gi], ch)
# dilate one cell so the clamp covers the whole face a road crosses
dil = carve.copy()
for dj in (-1, 0, 1):
for di in (-1, 0, 1):
dil = _np.minimum(dil, _np.roll(_np.roll(carve, dj, axis=0), di, axis=1))
bm = bmesh.new()
grid = []
for j in range(ny + 1):
row = []
for i in range(nx + 1):
gx2 = x0g + i * sx
gy2 = y0g + j * sy
gz = H(gx2, gy2) - 0.04
if dil[j, i] != _np.inf:
gz = min(gz, dil[j, i] - 0.22)
row.append(bm.verts.new((gx2, gy2, gz)))
grid.append(row)
for j in range(ny):
for i in range(nx):
bm.faces.new((grid[j][i], grid[j][i + 1], grid[j + 1][i + 1], grid[j + 1][i]))
bmesh.ops.triangulate(bm, faces=bm.faces)
add_obj("terrain-col", bm, [M_GROUND], 18.0)
print("terrain grid %dx%d (%d carve samples)" % (nx, ny, len(CARVE)))
else:
gx, gy = (x0g + x1g) / 2, (y0g + y1g) / 2
bm = bmesh.new()
res = bmesh.ops.create_cube(bm, size=1.0)
bmesh.ops.scale(bm, vec=(max(xs) - min(xs) + 100, max(ys) - min(ys) + 100, 1.0), verts=res["verts"])
bmesh.ops.scale(bm, vec=(x1g - x0g, y1g - y0g, 1.0), verts=res["verts"])
bmesh.ops.translate(bm, vec=(gx, gy, -0.5), verts=res["verts"])
add_obj("ground-convcol", bm, [M_GROUND], 18.0)
@ -877,7 +1009,7 @@ batches = [("PP", pp_spots, PP_CAP)] + [(k, v, SMASH_CAP[k]) for k, v in smash_s
for prefix, spots, cap in batches:
for i, (mx, my, yaw) in enumerate(spots[:cap]):
emp = bpy.data.objects.new("%s_%03d" % (prefix, i), None)
emp.location = (mx, my, 0.05)
emp.location = (mx, my, H(mx, my) + 0.05)
emp.rotation_euler = (0, 0, yaw)
bpy.context.collection.objects.link(emp)
counts[prefix.lower()] = min(len(spots), cap)
@ -911,7 +1043,7 @@ if best_run and best_run[0] >= 150.0:
yaw = math.atan2(p1[1] - p0[1], p1[0] - p0[0])
for nm, p in (("DragStart", p0), ("DragEnd", p1)):
emp = bpy.data.objects.new(nm, None)
emp.location = (p[0], p[1], 0.1)
emp.location = (p[0], p[1], H(p[0], p[1]) + 0.1)
emp.rotation_euler = (0, 0, yaw)
bpy.context.collection.objects.link(emp)
counts["drag_m"] = int(run)
@ -920,7 +1052,7 @@ if spawn_arg:
slat, slon, sbear = [float(v) for v in spawn_arg.split(",")]
sx, sy = xy(slat, slon)
sp = bpy.data.objects.new("Spawn", None)
sp.location = (sx, sy, 0.1)
sp.location = (sx, sy, H(sx, sy) + 0.1)
sp.rotation_euler = (0, 0, math.radians(-sbear))
bpy.context.collection.objects.link(sp)
@ -931,7 +1063,7 @@ if rp_arg:
plat, plon = [float(v) for v in pair.split(",")]
px, py = xy(plat, plon)
emp = bpy.data.objects.new("RP_%02d" % i, None)
emp.location = (px, py, 0.1)
emp.location = (px, py, H(px, py) + 0.1)
bpy.context.collection.objects.link(emp)
emp.parent = rp

101
tools/fetch_dem.py Normal file
View File

@ -0,0 +1,101 @@
#!/usr/bin/env python3
"""Fetch real elevation for a level's OSM area from the AWS terrain tiles.
Usage: fetch_dem.py <area.json> <out_prefix>
Reads the area's bounding box straight from its OSM geometry (the original
fetch bboxes were never recorded -- same trap as the junction specs), grabs
the covering terrarium tiles at z15 (~4.2 m/px at Brisbane's latitude), and
writes:
<out_prefix>_dem.f32 row-major float32 heights in metres (little-endian)
<out_prefix>_dem.json {"w", "h", "min_lat", "min_lon", "max_lat", "max_lon"}
Terrarium encoding: height = R*256 + G + B/256 - 32768.
Tiles: https://s3.amazonaws.com/elevation-tiles-prod/terrarium/{z}/{x}/{y}.png
(open data, no key). Data (c) Mapzen/AWS Terrain Tiles contributors.
"""
import io
import json
import math
import struct
import sys
import urllib.request
from PIL import Image
Z = 15
URL = "https://s3.amazonaws.com/elevation-tiles-prod/terrarium/%d/%d/%d.png"
def tile_of(lat, lon, z):
n = 2 ** z
xt = (lon + 180.0) / 360.0 * n
lat_r = math.radians(lat)
yt = (1.0 - math.asinh(math.tan(lat_r)) / math.pi) / 2.0 * n
return xt, yt
def tile_bounds(xt, yt, z):
n = 2 ** z
lon0 = xt / n * 360.0 - 180.0
lat0 = math.degrees(math.atan(math.sinh(math.pi * (1 - 2 * yt / n))))
return lat0, lon0
def main():
src, prefix = sys.argv[1], sys.argv[2]
d = json.load(open(src))
lats, lons = [], []
for e in d["elements"]:
for g in e.get("geometry") or []:
lats.append(g["lat"])
lons.append(g["lon"])
if e.get("type") == "node" and "lat" in e:
lats.append(e["lat"])
lons.append(e["lon"])
lo_lat, hi_lat = min(lats), max(lats)
lo_lon, hi_lon = min(lons), max(lons)
x0, y1 = tile_of(lo_lat, lo_lon, Z) # south-west -> larger y tile index
x1, y0 = tile_of(hi_lat, hi_lon, Z)
tx0, tx1 = int(x0), int(x1)
ty0, ty1 = int(y0), int(y1)
cols = tx1 - tx0 + 1
rows = ty1 - ty0 + 1
print("bbox lat %.4f..%.4f lon %.4f..%.4f -> %dx%d tiles @z%d"
% (lo_lat, hi_lat, lo_lon, hi_lon, cols, rows, Z))
mosaic = Image.new("RGB", (cols * 256, rows * 256))
for ty in range(ty0, ty1 + 1):
for tx in range(tx0, tx1 + 1):
req = urllib.request.Request(URL % (Z, tx, ty),
headers={"User-Agent": "BurnoutShitbox/1.0"})
png = urllib.request.urlopen(req, timeout=60).read()
mosaic.paste(Image.open(io.BytesIO(png)), ((tx - tx0) * 256, (ty - ty0) * 256))
# mosaic geographic bounds (tile edges, not the request bbox)
m_hi_lat, m_lo_lon = tile_bounds(tx0, ty0, Z)
m_lo_lat, m_hi_lon = tile_bounds(tx1 + 1, ty1 + 1, Z)
w, h = mosaic.size
px = mosaic.load()
out = open(prefix + "_dem.f32", "wb")
lo, hi = 1e9, -1e9
for yy in range(h):
row = bytearray()
for xx in range(w):
r, g, b = px[xx, yy]
hm = r * 256 + g + b / 256.0 - 32768.0
hm = max(hm, 0.0) # clamp bathymetry: the river reads as 0, not -8
lo, hi = min(lo, hm), max(hi, hm)
row += struct.pack("<f", hm)
out.write(row)
out.close()
json.dump({"w": w, "h": h, "min_lat": m_lo_lat, "max_lat": m_hi_lat,
"min_lon": m_lo_lon, "max_lon": m_hi_lon},
open(prefix + "_dem.json", "w"))
print("wrote %s_dem.f32 (%dx%d, %.1f..%.1f m)" % (prefix, w, h, lo, hi))
if __name__ == "__main__":
main()

41
tools/osm_junction.py
View File

@ -16,6 +16,7 @@ are actually crossing when you get there.
"""
import json
import math
import os
import sys
from itertools import zip_longest
@ -33,6 +34,36 @@ M_LON = 111320.0 * math.cos(math.radians(LAT0))
def xz(lat, lon):
return ((lon - LON0) * M_LON, -(lat - LAT0) * M_LAT)
# terrain heights (tools/fetch_dem.py output), pure-python bilinear -- events
# bake spawn/convoy heights so the game never has to guess ground level
from array import array
DEM = None
DEM_META = None
_base = src[:-5] if src.endswith(".json") else src
if os.path.exists(_base + "_dem.f32"):
DEM_META = json.load(open(_base + "_dem.json"))
DEM = array("f")
with open(_base + "_dem.f32", "rb") as f:
DEM.fromfile(f, DEM_META["w"] * DEM_META["h"])
if sys.byteorder == "big":
DEM.byteswap()
def hgt(x, z):
if DEM is None:
return 0.0
lat = LAT0 - z / M_LAT
lon = LON0 + x / M_LON
w, h = DEM_META["w"], DEM_META["h"]
u = (lon - DEM_META["min_lon"]) / (DEM_META["max_lon"] - DEM_META["min_lon"]) * (w - 1)
v = (DEM_META["max_lat"] - lat) / (DEM_META["max_lat"] - DEM_META["min_lat"]) * (h - 1)
u = min(max(u, 0.0), w - 1.001)
v = min(max(v, 0.0), h - 1.001)
x0, y0 = int(u), int(v)
fx, fy = u - x0, v - y0
a = DEM[y0 * w + x0] * (1 - fx) + DEM[y0 * w + x0 + 1] * fx
b = DEM[(y0 + 1) * w + x0] * (1 - fx) + DEM[(y0 + 1) * w + x0 + 1] * fx
return a * (1 - fy) + b * fy
data = json.load(open(src))
ways = {}
for e in data["elements"]:
@ -88,13 +119,14 @@ def launch_point(pts, jpt):
dx, dz = jpt[0] - end[0], jpt[1] - end[1]
L = math.hypot(dx, dz) or 1.0
dx, dz = dx / L, dz / L
ey = round(hgt(end[0] - dz * LANE, end[1] + dx * LANE), 2)
# Sit in a lane, not on the centreline. Convoys are offset +/-LANE either
# side, so a centreline launch threads straight between them -- Grey x
# Glenelg passed within 2.9 m of a convoy car and never touched one,
# scoring nothing in 12 of 12 tuning runs. Same transform as offset().
# sign matters: offsetting the other way moved the launch AWAY from the
# convoy lane and widened Grey x Glenelg's closest pass from 2.9 m to 5.5 m
return {"x": end[0] - dz * LANE, "z": end[1] + dx * LANE, "dx": dx, "dz": dz}
return {"x": end[0] - dz * LANE, "z": end[1] + dx * LANE, "y": ey, "dx": dx, "dz": dz}
events = []
for spec in sys.argv[5:]:
@ -141,9 +173,10 @@ for spec in sys.argv[5:]:
for i in range(len(near) - 1))
if length < MIN_STREAM:
continue
by_street[street].append({"pts": offset(near, LANE), "speed": 12.0, "interval": 1.5})
by_street[street].append({"pts": offset(list(reversed(near)), LANE),
"speed": 11.0, "interval": 1.8})
fwd_pts = [[px, pz, round(hgt(px, pz), 2)] for px, pz in offset(near, LANE)]
rev_pts = [[px, pz, round(hgt(px, pz), 2)] for px, pz in offset(list(reversed(near)), LANE)]
by_street[street].append({"pts": fwd_pts, "speed": 12.0, "interval": 1.5})
by_street[street].append({"pts": rev_pts, "speed": 11.0, "interval": 1.8})
if street == a:
# OSM splits a street into many ways; only the one that actually
# reaches the junction can define the launch, or we start 40 m