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Debug continuous behavior in WebXR scenes — physics, animations, collisions, game loops, or any real-time interaction that happens too fast for an agent to observe. Uses ECS pause/step/snapshot/diff to freeze time and inspect state frame by frame.
기본적으로 소스를 먼저 확인하는 Prompt가 선택됩니다. 직접 명령으로 전환하거나 로컬 사본을 다운로드할 수도 있습니다.
설치 여부를 결정하기 전에 SKILL.md와 SkillsMP에 표시된 보조 파일을 읽어 보세요.
Codex 또는 Claude로 설치 이 Prompt를 복사해 Codex, Claude 또는 다른 어시스턴트에 붙여 넣으면 Skill 페이지를 검토하고 설치를 진행할 수 있습니다.
직접 명령은 검토 Prompt를 거치지 않습니다. 실행하기 전에 소스를 확인하세요.
npx skills add https://github.com/facebook/immersive-web-sdk --skill iwsdk-debug명령은 한 줄로 유지됩니다. 복사하기 전에 가로로 스크롤해 전체 내용을 확인하세요.
로컬 사본을 원하시나요? SkillsMP에서 현재 제공할 수 있는 파일을 다운로드하세요.
SOC 직업 분류 기준
SKILL.md 표시 중
| name | iwsdk-debug |
| description | Debug continuous behavior in WebXR scenes — physics, animations, collisions, game loops, or any real-time interaction that happens too fast for an agent to observe. Uses ECS pause/step/snapshot/diff to freeze time and inspect state frame by frame. |
| argument-hint | [description of behavior to debug] |
Real-time behavior (physics, animations, collisions, game loops) happens too fast for an agent to observe directly. By the time you take a screenshot, the action is over. This skill uses ECS time-control tools to freeze, step, and diff state frame by frame.
User request is in $ARGUMENTS.
Every debugging session follows this pattern:
ecs_pause — freeze ECS updates right before the interesting momentecs_snapshot({ "label": "before" }) — capture state before the actionecs_step(count, delta) — advance a few frames at fixed timestepbrowser_screenshot — visually verify what happenedecs_snapshot({ "label": "after" }) — capture state after steppingecs_diff({ "from": "before", "to": "after" }) — see exactly what changedecs_resume — return to normal execution when doneThe key insight: pause BEFORE triggering the action, not after. If you pause after, you've already missed the first frames.
| Tool | Purpose |
|---|---|
ecs_pause | Freeze all ECS system updates. Render loop continues — screenshots still work. |
ecs_step({"count":N,"delta":SECONDS}) | Advance N frames with fixed timestep (seconds). Must pause first. |
ecs_resume | Resume normal execution. First frame uses capped delta to avoid physics explosions. |
ecs_snapshot({"label":"..."}) | Capture full ECS state. Stores up to 2 snapshots. |
ecs_diff({"from":"...","to":"..."}) | Compare two snapshots. Shows added/removed entities and field-level value changes. |
ecs_toggle_system({"name":"...","paused":true}) | Pause/resume a single system. Use ecs_list_systems to discover names. |
browser_screenshot | Runtime visual verification — works while paused and auto-switches from editor view. |
delta is in seconds. Common values: 0.016 (60fps), 0.0139 (72fps/Quest refresh rate).Short domain-specific tips. Apply the core workflow above, plus these hints.
delta: 0.016 to catch initial acceleration.PhysicsBody._linearVelocity and PhysicsBody._angularVelocity to see motion direction and speed.Transform.position to track movement.PhysicsBody (Static) and PhysicsShape (TriMesh for complex geometry).ecs_query_entity to inspect PhysicsShape and PhysicsBody on both the falling object and the surface.PhysicsBody._linearVelocity shows the throw direction and speed.PhysicsBody with state: Dynamic.delta matching your target framerate.Transform.position, Transform.orientation, and Transform.scale across snapshots to track interpolation.PhysicsBody._linearVelocity sign changes (indicates bounce/impact).PhysicsBody._angularVelocity spikes (indicates tumbling from impact).PhysicsShape exists on both entities, and verify shape types are appropriate (use TriMesh for complex static geometry).ecs_list_systems to see all systems and their priorities.ecs_toggle_system({ "name": "SystemName", "paused": true }) to pause a suspect system while others run.ecs_step will fail if you haven't called ecs_pause first.