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Per-junction medal targets, measured; fix the last unplayable junction

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Medal targets are no longer one uniform 15/35/60k guess across every event.
tools/tune_junctions.gd plays each junction 12 times with varied launches and
sets bronze/silver/gold at the 35th/65th/88th percentile of actual damage, so
they now range from $4k at Cliffs Corner to $73k gold at Melbourne x Merivale.
The old numbers made half the events impossible and the other half trivial.

Grey x Glenelg scored $0 in 12/12 runs and took three fixes, each found by
measuring rather than reading:
- The launch sat on the street centreline, so the car drove cleanly BETWEEN the
  two convoy lanes -- closest pass 2.9 m, almost exactly the 2.7 m lane offset.
  It now launches in a lane. (The first attempt offset the wrong way and widened
  the pass to 5.5 m, which is how the sign error announced itself.)
- int(L / headway) floors to one car on a short clipped stream, so that junction
  fielded 9 convoy cars against the usual 20-25. Minimum 3 per stream, evenly
  spaced to fit.
Result: $0 -> $91k, convoy 9 -> 18, and 0 of 9 junctions now unplayable.

The tuner has turned out to be the event validator as much as a balance tool --
"scores nothing in every run" is an unplayable event, not a tuning problem.

Also from the review: the deformer no longer crumples det_* panels after they've
been shed onto their own body, and notes that rebuilding an ArrayMesh drops any
imported LODs.

Honest gap: Cliffs Corner and Bridge Approach show median == max at ~$4.7k --
winnable and correctly tuned, but the run ends on scenery before the convoy is
reached. Both are curved approaches; they want better crossings picked by hand.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
m3ultra 2026-07-29 00:15:05 +10:00
parent 0c13c82eac
commit aac4384c05
10 changed files with 800 additions and 687 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
README.md
View File

@ -42,6 +42,22 @@ Controls: WASD/arrows drive, Shift drift, Space boost, R reset (or retry after C
runs**: a second Godot instance contends for the `.godot` import lock, and a level runs**: a second Godot instance contends for the `.godot` import lock, and a level
rebuild mid-flight silently feeds it half-written levels, which reads as "this event rebuild mid-flight silently feeds it half-written levels, which reads as "this event
scores zero" rather than as an error. scores zero" rather than as an error.
The tuner is also the event *validator*. An event that scores nothing across every
run isn't badly tuned, it's unplayable, and it prints `!!` for exactly that. Three
separate causes turned up that way, none visible by reading the generator:
convoy streams clipped so wide that you thread the intersection through a 20 m gap;
a launch point on the street centreline threading cleanly *between* the two convoy
lanes; and `int(L / headway)` flooring to one car on a short stream, leaving nine
convoy cars where the working events have twenty. Re-run it after any change to the
generator, the launch geometry, or convoy spacing — all three feed the numbers.
Read the spread it prints, not just the targets. **Cliffs Corner** and **Bridge
Approach** both show median == max at a low ceiling (~$4.7k), which means the run
reliably ends on the first thing you hit and the convoy is never reached — they're
winnable and honestly tuned, but they're scenery crashes rather than pile-ups. Both
sit on curved approaches where the launch street bends away from the intersection.
Worth hand-picking better crossings for those two.
- **Race** — 3 laps vs 3 rubber-banded rivals on the level's `RacePath`. - **Race** — 3 laps vs 3 rubber-banded rivals on the level's `RacePath`.
- **Drag** — NFSU2's event, our code: a straight-line run down the level's longest - **Drag** — NFSU2's event, our code: a straight-line run down the level's longest
genuinely straight stretch of wide road (the builder finds it and drops genuinely straight stretch of wide road (the builder finds it and drops
@ -227,6 +243,18 @@ Make a folder `levels/<id>/` containing `level.glb` (or `level.tscn`). Blender c
/Applications/Godot.app/Contents/MacOS/Godot --headless --path . --script tests/smoke.gd /Applications/Godot.app/Contents/MacOS/Godot --headless --path . --script tests/smoke.gd
``` ```
Covers all seven modes (cruise, crash, junction, outrun, pursuit, drag, derby,
race) in about 30 s, printing a `.. stage` line as it enters each one.
Failures go through `_check()`, never bare `assert()`. A failed assert in a
headless `SceneTree` script halts the script but leaves the tree running, so the
process spins forever at 100% CPU instead of failing — it looks exactly like a
slow test. That cost 53 minutes of wall clock to spot once; the stage lines and
`_check()` exist so it can't happen twice.
Only one Godot instance may touch the project at a time: a second contends for
the `.godot` import lock and can kill the first mid-run.
Visual check (opens a window, saves a PNG): Visual check (opens a window, saves a PNG):
``` ```

402
levels/albert_parklands/junctions.json
View File

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128
levels/kangaroo_point/junctions.json
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[ [
-62.42866919418658, -62.4286691941866,
-1.5633764655737972 -1.5633764655738
], ],
[ [
-56.22534149367183, -56.2253414936718,
7.176315693408943 7.17631569340894
], ],
[ [
-31.608294574960304, -31.6082945749603,
46.399012606383145 46.3990126063831
] ]
], ],
"speed": 12.0, "speed": 12.0
"interval": 1.5
}, },
{ {
"interval": 1.5,
"pts": [ "pts": [
[ [
-105.44415325837058, -105.444153258371,
17.29338138921854 17.2933813892185
], ],
[ [
-124.85549758561747, -124.855497585617,
29.02803771609806 29.0280377160981
], ],
[ [
-145.9651989732041, -145.965198973204,
41.680234308480806 41.6802343084808
] ]
], ],
"speed": 12.0, "speed": 12.0
"interval": 1.5
} }
], ],
"targets": [ "targets": [
15000, 22500,
35000, 25000,
60000 29000
] ]
} }
] ]

168
levels/story_bridge/junctions.json
View File

@ -2,185 +2,185 @@
{ {
"name": "Bridge Approach", "name": "Bridge Approach",
"spawn": { "spawn": {
"x": 32.83372074498513, "dx": -0.114095858645717,
"z": -118.28842427027045, "dz": -0.993469745407426,
"dx": -0.11409585864571734, "x": 35.5160890575852,
"dz": -0.9934697454074263 "z": -118.596483088614
}, },
"streams": [ "streams": [
{ {
"interval": 1.5,
"pts": [ "pts": [
[ [
21.82446567810751, 21.8244656781075,
-237.81387509878263 -237.813875098783
], ],
[ [
23.145720027383163, 23.1457200273832,
-226.45520770652828 -226.455207706528
], ],
[ [
24.788209612143817, 24.7882096121438,
-213.84815371354867 -213.848153713549
], ],
[ [
26.145569174952232, 26.1455691749522,
-200.29741976993301 -200.297419769933
] ]
], ],
"speed": 12.0, "speed": 12.0
"interval": 1.5
}, },
{ {
"interval": 1.5,
"pts": [ "pts": [
[ [
2.199941588527042, 2.19994158852704,
-240.32717119002737 -240.327171190027
], ],
[ [
-2.5248172223755736, -2.52481722237557,
-243.91950536774928 -243.919505367749
], ],
[ [
-6.325349530807717, -6.32534953080772,
-247.60965512377 -247.60965512377
], ],
[ [
-15.183983237537262, -15.1839832375373,
-255.2613583327868 -255.261358332787
], ],
[ [
-19.822722086570074, -19.8227220865701,
-258.6729952966697 -258.67299529667
], ],
[ [
-24.279515332983824, -24.2795153329838,
-261.70335578638884 -261.703355786389
], ],
[ [
-29.011437974400625, -29.0114379744006,
-263.89076106496833 -263.890761064968
] ]
], ],
"speed": 12.0, "speed": 12.0
"interval": 1.5
}, },
{ {
"interval": 1.8,
"pts": [ "pts": [
[ [
20.772447151780117, 20.7724471517801,
-199.75931223039953 -199.7593122304
], ],
[ [
19.423377981138138, 19.4233779811381,
-213.23286388675078 -213.232863886751
], ],
[ [
17.78654515972297, 17.786545159723,
-225.7924522932427 -225.792452293243
], ],
[ [
16.46063564037367, 16.4606356403737,
-237.18991410136036 -237.18991410136
] ]
], ],
"speed": 11.0, "speed": 11.0
"interval": 1.8
}, },
{ {
"interval": 1.8,
"pts": [ "pts": [
[ [
-26.737042902514784, -26.7370429025148,
-268.7884265350654 -268.788426535065
], ],
[ [
-21.61124337794858, -21.6112433779486,
-266.3980682135746 -266.398068213575
], ],
[ [
-16.704188313209045, -16.704188313209,
-263.0814811029762 -263.081481102976
], ],
[ [
-11.761774350471743, -11.7617743504717,
-259.43849686691397 -259.438496866914
], ],
[ [
-2.7224195143774796, -2.72241951437748,
-251.63195487598963 -251.63195487599
], ],
[ [
0.9839307874462617, 0.983930787446262,
-248.02422063236523 -248.024220632365
], ],
[ [
5.4649806575202335, 5.46498065752023,
-244.6282780101317 -244.628278010132
] ]
], ],
"speed": 11.0, "speed": 11.0
"interval": 1.8
}, },
{ {
"interval": 1.5,
"pts": [ "pts": [
[ [
11.27070084290225, 11.2707008429023,
-197.84784324166512 -197.847843241665
], ],
[ [
10.896175804718348, 10.8961758047183,
-204.76641770228525 -204.766417702285
], ],
[ [
10.476477879675205, 10.4764778796752,
-211.20975788808624 -211.209757888086
], ],
[ [
9.92304078347784, 9.92304078347784,
-216.20700696593718 -216.207006965937
], ],
[ [
8.932958301853615, 8.93295830185362,
-221.62531766816238 -221.625317668162
], ],
[ [
7.508738699199866, 7.50873869919987,
-226.8653717079938 -226.865371707994
] ]
], ],
"speed": 12.0, "speed": 12.0
"interval": 1.5
}, },
{ {
"interval": 1.5,
"pts": [ "pts": [
[ [
28.875188928696993, 28.875188928697,
-229.49242546244793 -229.492425462448
], ],
[ [
28.72548025209394, 28.7254802520939,
-214.05366159277472 -214.053661592775
], ],
[ [
28.150874632761848, 28.1508746327618,
-209.45956029627345 -209.459560296273
], ],
[ [
27.279147353059784, 27.2791473530598,
-204.7812989955361 -204.781298995536
], ],
[ [
26.094879529030933, 26.0948795290309,
-199.44340263065618 -199.443402630656
] ]
], ],
"speed": 12.0, "speed": 12.0
"interval": 1.5
} }
], ],
"targets": [ "targets": [
15000, 5000,
35000, 7500,
60000 11500
] ]
} }
] ]

73
levels/woolies_carpark/junctions.json
View File

@ -1,13 +1,74 @@
[ [
{ {
"name": "Trolley Run", "name": "Trolley Run",
"spawn": {"x": 33.0, "z": 52.0, "dx": 0.0, "dz": -1.0}, "spawn": {
"dx": 0.0,
"dz": -1.0,
"x": 33.0,
"z": 52.0
},
"streams": [ "streams": [
{"pts": [[-70.0, 15.0], [70.0, 15.0]], "speed": 11.0, "interval": 2.0}, {
{"pts": [[70.0, 12.0], [-70.0, 12.0]], "speed": 12.0, "interval": 2.4}, "interval": 2.0,
{"pts": [[-70.0, -21.0], [70.0, -21.0]], "speed": 10.0, "interval": 2.2}, "pts": [
{"pts": [[70.0, -24.0], [-70.0, -24.0]], "speed": 12.0, "interval": 2.8} [
-70.0,
15.0
],
[
70.0,
15.0
]
],
"speed": 11.0
},
{
"interval": 2.4,
"pts": [
[
70.0,
12.0
],
[
-70.0,
12.0
]
],
"speed": 12.0
},
{
"interval": 2.2,
"pts": [
[
-70.0,
-21.0
],
[
70.0,
-21.0
]
],
"speed": 10.0
},
{
"interval": 2.8,
"pts": [
[
70.0,
-24.0
],
[
-70.0,
-24.0
]
],
"speed": 12.0
}
], ],
"targets": [8000, 20000, 40000] "targets": [
12500,
15000,
46000
]
} }
] ]

12
src/deform.gd
View File

@ -16,6 +16,10 @@ extends RefCounted
## ##
## ponytail: normals are left alone. Recomputing them per impact costs more than ## ponytail: normals are left alone. Recomputing them per impact costs more than
## it buys at this crumple scale; revisit if the shading reads flat. ## it buys at this crumple scale; revisit if the shading reads flat.
## ponytail: _write() rebuilds a whole ArrayMesh via add_surface_from_arrays(),
## which takes no LOD or shadow-mesh argument -- a deformable car therefore loses
## any LODs its import generated. Harmless for the procedural fleet (no LODs to
## lose) but worth knowing before wiring the deformer to a dense imported model.
const ALPHA := 2.0 # distance falloff exponent; PDF suggests 1.0-3.0 const ALPHA := 2.0 # distance falloff exponent; PDF suggests 1.0-3.0
const NEAR := 4 # control points blended per vertex const NEAR := 4 # control points blended per vertex
@ -34,6 +38,7 @@ var _meshes: Array = [] # one entry per MeshInstance3D, all its surfaces toget
var _cp := PackedVector3Array() var _cp := PackedVector3Array()
var _disp := PackedVector3Array() var _disp := PackedVector3Array()
var _ok := false var _ok := false
var _root: Node3D = null # the car model; panels reparented away stop deforming
var _skins: Array = [] # {mat, albedo, rough}: per-car material copies to dirty up var _skins: Array = [] # {mat, albedo, rough}: per-car material copies to dirty up
var damage := 0.0 # 0..1, drives the paint getting scratched and dulled var damage := 0.0 # 0..1, drives the paint getting scratched and dulled
@ -126,6 +131,7 @@ func setup(root: Node3D) -> bool:
(m["mi"] as MeshInstance3D).mesh = copy (m["mi"] as MeshInstance3D).mesh = copy
m["mesh"] = copy m["mesh"] = copy
_meshes.append(m) _meshes.append(m)
_root = root
_ok = true _ok = true
_write() _write()
return true return true
@ -198,6 +204,12 @@ func _wear() -> void:
m.detail_enabled = damage > 0.35 m.detail_enabled = damage > 0.35
func _write() -> void: func _write() -> void:
# car.gd reparents det_* panels onto their own RigidBody when shed and frees
# them seconds later; left in the list they'd be debris still being crumpled
# by a car they've come off, and eventually freed nodes being written to
if is_instance_valid(_root):
_meshes = _meshes.filter(func(m) -> bool:
return is_instance_valid(m["mi"]) and _root.is_ancestor_of(m["mi"]))
for m in _meshes: for m in _meshes:
var mesh: ArrayMesh = m["mesh"] var mesh: ArrayMesh = m["mesh"]
var inv: Transform3D = (m["xform"] as Transform3D).affine_inverse() var inv: Transform3D = (m["xform"] as Transform3D).affine_inverse()

9
src/game.gd
View File

@ -269,11 +269,16 @@ func _ready() -> void:
add_child(path) add_child(path)
var L := curve.get_baked_length() var L := curve.get_baked_length()
var headway: float = stream["speed"] * stream["interval"] var headway: float = stream["speed"] * stream["interval"]
var n: int = clampi(int(L / headway), 1, 14) # At least 3 per stream, spaced to fit. int(L / headway) floors to 1
# on a short clipped stream, which is how Grey x Glenelg ended up
# with 9 convoy cars against the usual 20-25 and gaps wide enough to
# drive clean through -- it scored nothing in 12 of 12 tuning runs.
var n: int = clampi(int(L / headway), 3, 14)
var spacing := L / float(n)
for i in n: for i in n:
var t := TrafficCar.new() var t := TrafficCar.new()
t.path = path t.path = path
t.offset = fposmod(i * headway, L) t.offset = fposmod(i * spacing, L)
t.speed = stream["speed"] t.speed = stream["speed"]
t.model_idx = midx t.model_idx = midx
midx += 1 midx += 1

9
tools/osm_junction.py
View File

@ -87,7 +87,14 @@ def launch_point(pts, jpt):
end = [end[0] + dx / L * grow, end[1] + dz / L * grow] end = [end[0] + dx / L * grow, end[1] + dz / L * grow]
dx, dz = jpt[0] - end[0], jpt[1] - end[1] dx, dz = jpt[0] - end[0], jpt[1] - end[1]
L = math.hypot(dx, dz) or 1.0 L = math.hypot(dx, dz) or 1.0
return {"x": end[0], "z": end[1], "dx": dx / L, "dz": dz / L} dx, dz = dx / L, dz / L
# 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}
events = [] events = []
for spec in sys.argv[5:]: for spec in sys.argv[5:]: