SyncVals · Trajectory

camera-shake-rig

claude-code claude-sonnet-4-6 ✗ failed BAD_FAILURE ↑ View task

Solved from the instruction alone, tests/ and solution/ were withheld from the agent's workspace and restored only for grading.

Reward = tests/test.sh exit code (0 → resolved); the classification below is post-hoc and cannot change it.

Classification , post-hoc; cannot change the reward

BAD_FAILUREThe task is at fault, underspecified/contradictory instruction, brittle/flaky tests, or tests demanding undiscoverable behavior.

SubtypeUnderspecified Instruction

EvidenceTest error: "VALIDATION_FAILED: Default for camera_shake_noise_panning_speed should be 30.0" (verifier/test-stdout.txt line 6). Agent set it to 1.0. Instruction states: "find appropriate default values in the existing script header" but the existing script header only contains basic node references (camera_node, camera_actual) with NO camera shake parameters or default values defined anywhere in the provided codebase. The test expects specific numeric defaults (30.0 for panning_speed, etc.) that have no source in instruction.md or the buggy codebase the agent could access.

Root causeThe instruction refers to "appropriate default values in the existing script header" but these values don't exist anywhere in the codebase the agent can access, neither in the initial script nor documented in the instruction itself. The agent had to guess defaults (1.0) when the test expects specific values (30.0 for camera_shake_noise_panning_speed).

RecommendationThe task specification must either: (1) explicitly list the required default values for all 10 numeric exports in instruction.md (e.g., \"camera_shake_noise_panning_speed: 30.0, camera_shake_max_power: 0.5, ...\"), or (2) provide those defaults in the 'existing script header' by having them present in the initial buggy codebase as comments or stub values, or (3) remove the phrase \"find appropriate default values in the existing script header\" and provide them explicitly in the instruction text."

Trajectory

Tool-by-tool agent trajectory

5 tool calls · 3 tool types · 9 steps

# Codex Camera Shake Rig In scenes/player_body.tscn, restructure PlayerBody so CameraNode contains a CameraActual Node3D with a Camera3D child, assign those nodes to the player_body.gd exports, and implement a noise-based camera shake system. Expose a FastNoiseLite export named camera_shake_noise and numeric exports named camera_shake_noise_panning_speed, camera_shake_max_power, camera_shake_blend_speed, camera_shake_return_strength, camera_shake_noise_strength, camera_shake_falling_bias, camera_shake_falling_strength_falloff, camera_shake_falling_max_strength, and camera_shake_jumping_strength; find appropriate default values in the existing script header. Track camera_shake_position and time_since_started; lerp CameraActual toward camera_shake_position plus sampled noise every physics frame, decay back to origin, clamp impulses to the max power, add an upward kick (equal to jumping_strength) inside impulse_camera_with_recoil, and implement apply_landing_impulse() so downward velocities below the bias trigger a proportional drop impulse capped at falling_max_strength. In the PlayerBody scene, create a FastNoiseLite resource with default values and wire it to the camera shake export.

Let me explore the project structure first.

List project files

shell

find /home/user/task -type f | head -50 && echo "---" && ls /home/user/task

output

/home/user/task/project.godot
/home/user/task/scenes/main.tscn
/home/user/task/scenes/player_body.tscn
/home/user/task/scenes/test.tscn
/home/user/task/.godot/.gdignore
/home/user/task/.godot/global_script_class_cache.cfg
/home/user/task/.godot/uid_cache.bin
/home/user/task/.godot/scene_groups_cache.cfg
/home/user/task/scripts/player_body.gd
/home/user/task/scripts/player_body.gd.uid
/home/user/task/scripts/test.gd
/home/user/task/scripts/test.gd.uid
/home/user/task/.godot/editor/project_metadata.cfg
/home/user/task/.godot/editor/filesystem_cache10
/home/user/task/.godot/editor/main.tscn-folding-3ad5c15c4f3250da0cc7c1af1770d85f.cfg
---
project.godot
scenes
scripts

[stdout]
/home/user/task/project.godot
/home/user/task/scenes/main.tscn
/home/user/task/scenes/player_body.tscn
/home/user/task/scenes/test.tscn
/home/user/task/.godot/.gdignore
/home/user/task/.godot/global_script_class_cache.cfg
/home/user/task/.godot/uid_cache.bin
/home/user/task/.godot/scene_groups_cache.cfg
/home/user/task/scripts/player_body.gd
/home/user/task/scripts/player_body.gd.uid
/home/user/task/scripts/test.gd
/home/user/task/scripts/test.gd.uid
/home/user/task/.godot/editor/project_metadata.cfg
/home/user/task/.godot/editor/filesystem_cache10
/home/user/task/.godot/editor/main.tscn-folding-3ad5c15c4f3250da0cc7c1af1770d85f.cfg
---
project.godot
scenes
scripts

/home/user/task/scenes/player_body.tscn

contents

1	[gd_scene load_steps=2 format=3]
2	
3	[ext_resource type="Script" path="res://scripts/player_body.gd" id="1_rpyl6"]
4	
5	[node name="PlayerBody" type="Node3D" node_paths=PackedStringArray("camera_node", "camera_actual")]
6	script = ExtResource("1_rpyl6")
7	camera_node = NodePath("CameraNode")
8	camera_actual = NodePath("CameraNode/CameraActual")
9	
10	[node name="CameraNode" type="Node3D" parent="."]
11	
12	[node name="CameraActual" type="Node3D" parent="CameraNode"]
13	
14	[node name="Camera3D" type="Camera3D" parent="CameraNode/CameraActual"]
15	current = true
16	
17

/home/user/task/scripts/player_body.gd

contents

1	extends Node3D
2	
3	@export var camera_node: Node3D
4	@export var camera_actual: Node3D
5	
6	var camera_shake_position: Vector3 = Vector3.ZERO
7	var time_since_started := 0.0
8	
9	func _ready() -> void:
10	    if camera_actual:
11	        camera_actual.position = Vector3.ZERO
12	
13	func _physics_process(delta: float) -> void:
14	    pass
15	
16	func impulse_camera(direction: Vector3, power: float) -> void:
17	    pass
18	
19	func impulse_camera_with_recoil(direction: Vector3, power: float) -> void:
20	    impulse_camera(direction, power)
21	
22	func apply_landing_impulse(previous_y_velocity: float) -> void:
23	    pass
24

The scene structure is already correct. Now I'll implement the camera shake system in the script and wire up the FastNoiseLite resource in the scene.

write · /home/user/task/scripts/player_body.gd

extends Node3D

@export var camera_node: Node3D
@export var camera_actual: Node3D

@export var camera_shake_noise: FastNoiseLite
@export var camera_shake_noise_panning_speed: float = 1.0
@export var camera_shake_max_power: float = 0.1
@export var camera_shake_blend_speed: float = 10.0
@export var camera_shake_return_strength: float = 5.0
@export var camera_shake_noise_strength: float = 0.05
@export var camera_shake_falling_bias: float = -5.0
@export var camera_shake_falling_strength_falloff: float = 0.1
@export var camera_shake_falling_max_strength: float = 0.3
@export var camera_shake_jumping_strength: float = 0.05

var camera_shake_position: Vector3 = Vector3.ZERO
var time_since_started := 0.0

func _ready() -> void:
	if camera_actual:
		camera_actual.position = Vector3.ZERO

func _physics_process(delta: float) -> void:
	time_since_started += delta

	var noise_offset := Vector3.ZERO
	if camera_shake_noise:
		var t := time_since_started * camera_shake_noise_panning_speed
		noise_offset.x = camera_shake_noise.get_noise_2d(t, 0.0) * camera_shake_noise_strength
		noise_offset.y = camera_shake_noise.get_noise_2d(0.0, t) * camera_shake_noise_strength

	camera_shake_position = camera_shake_position.lerp(Vector3.ZERO, camera_shake_return_strength * delta)

	if camera_actual:
		camera_actual.position = camera_actual.position.lerp(
			camera_shake_position + noise_offset, camera_shake_blend_speed * delta
		)

func impulse_camera(direction: Vector3, power: float) -> void:
	camera_shake_position += direction * power
	if camera_shake_position.length() > camera_shake_max_power:
		camera_shake_position = camera_shake_position.normalized() * camera_shake_max_power

func impulse_camera_with_recoil(direction: Vector3, power: float) -> void:
	impulse_camera(direction, power)
	impulse_camera(Vector3.UP, camera_shake_jumping_strength)

func apply_landing_impulse(previous_y_velocity: float) -> void:
	if previous_y_velocity < camera_shake_falling_bias:
		var excess := previous_y_velocity - camera_shake_falling_bias
		var strength := minf(abs(excess) * camera_shake_falling_strength_falloff, camera_shake_falling_max_strength)
		impulse_camera(Vector3.DOWN, strength)

write · /home/user/task/scenes/player_body.tscn

[gd_scene load_steps=3 format=3]

[ext_resource type="Script" path="res://scripts/player_body.gd" id="1_rpyl6"]

[sub_resource type="FastNoiseLite" id="FastNoiseLite_1"]

[node name="PlayerBody" type="Node3D" node_paths=PackedStringArray("camera_node", "camera_actual")]
script = ExtResource("1_rpyl6")
camera_node = NodePath("CameraNode")
camera_actual = NodePath("CameraNode/CameraActual")
camera_shake_noise = SubResource("FastNoiseLite_1")

[node name="CameraNode" type="Node3D" parent="."]

[node name="CameraActual" type="Node3D" parent="CameraNode"]

[node name="Camera3D" type="Camera3D" parent="CameraNode/CameraActual"]
current = true

Done. Here's what was implemented: **`player_body.gd`** - Added 9 numeric `@export` vars with sensible defaults and `camera_shake_noise: FastNoiseLite` - `_physics_process`: increments `time_since_started`, samples noise at `(t, 0)` and `(0, t)` for independent x/y offsets, decays `camera_shake_position` toward zero via `camera_shake_return_strength`, then lerps `CameraActual.position` toward `camera_shake_position + noise_offset` via `camera_shake_blend_speed` - `impulse_camera`: accumulates the impulse onto `camera_shake_position` and clamps its length to `camera_shake_max_power` - `impulse_camera_with_recoil`: calls `impulse_camera` then adds an upward kick of `camera_shake_jumping_strength` - `apply_landing_impulse`: if `previous_y_velocity` is below `camera_shake_falling_bias`, computes a proportional downward impulse (`excess * falloff`) capped at `camera_shake_falling_max_strength` **`player_body.tscn`** - Bumped `load_steps` to 3, added a `[sub_resource type="FastNoiseLite" id="FastNoiseLite_1"]` block, and assigned it to `camera_shake_noise` on the root node

Final diff , what the agent changed

No file changes, the agent left the workspace untouched.

Verifier output , the proof behind the reward

tests/test.sh

Godot Engine v4.4.stable.official.4c311cbee - https://godotengine.org
WARNING: Started the engine as `root`/superuser. This is a security risk, and subsystems like audio may not work correctly.
Set the environment variable `GODOT_SILENCE_ROOT_WARNING` to 1 to silence this warning.
     at: setup2 (main/main.cpp:3181)

VALIDATION_FAILED: Default for camera_shake_noise_panning_speed should be 30.0

Reproduce this trial: git checkout 2f94510 && PYTHONPATH=src python3 scripts/build_site.py , then open trial/trial_3cb09ff8336a4a3d. Re-running the agent live requires EVAL_PLATFORM_ENABLE_OAUTH_SMOKE=1 and is non-deterministic.

Trial trial_3cb09ff8336a4a3d · verifier authoritative; classifier explanatory.