Add new scene files and implement stage impact resolver

- Created three new scene files: `wobble.scene`, `wobble2.scene`, and `wobble3.scene` with various terrain and prop configurations.
- Introduced `stage_impact_resolver.gd` script to manage impact detection and response between props and stickmen.
- Added unit tests for actor blocking overlap to ensure proper interaction with stationary props.

docs/architecture/tech_debt_and_optimizations.md

@@ -78,8 +78,8 @@ This document tracks known technical debt, optimization opportunities, and minor
 | 66  | **Stage selection panels duplicate layout and visual rules** — the prop card owns its own shell sizing, choice styles, and `stage_prop_settings` tokens, making later inspector cards prone to drift. | Low | Planned | Promote the current prop card to a small shared Stage inspector shell, choice group, and toggle row with `stage_panels` theme tokens. Keep domain handlers in `SandboxStage`; preserve the existing prop role schema. During migration, resolve old prop tokens as fallback only temporarily and remove duplicate reads once the prop card uses the shared controls. See `docs/specs/stage_panel_ui_system.md`. (2026-10-09) |
 | 67  | **SandboxStage controller is too large for comfortable Godot IDE editing** — stage UI, terrain painting, document workflow, runtime rules, and speech coordination shared one roughly 7,600-line script. | High | In Progress | Approved slices 1–16 extracted reusable stage components and reduced `sandbox_stage.gd` to 5,009 lines (about 34%); the below-3,800-line target remains unmet by 1,209 lines. Root input/selection, authored queue/rule writes, recovery application, and save/commit ordering remain coordinated there. Root `--check-only` parse passes; behavior and in-editor responsiveness checks are pending. See `docs/specs/sandbox_stage_composition_refactor.md`. (2026-10-10) |
 | 68  | **Use preview cannot predict all prior rules or moving props** — DIRECT can see the current actor and prop plus a limited deterministic queue prefix, but reactive rules and rigid-body motion may change either before a pending Use action runs. | Low | Planned | Phase 17b displays an amber conditional preview when the future pose is uncertain and always recalculates reach during PLAY. One bounded target-movement replan handles ordinary drift without freezing physics. A future predictive timeline may improve authoring accuracy, but must not change persistent prop/spot IDs or claim certainty for simulated rule consequences. See `docs/specs/phase_17b_use_spots.md`. (2026-10-10) |
-| 69  | **Contact entry alone can miss a stickman hitting a fixed prop** — grounded locomotion stops at a shape-sweep safe fraction, sometimes before `body_entered` fires; resting contacts can also chatter after pause or quick separation. | Medium | Planned | Phase 17c routes identified blocking-prop sweep hits and actual body contacts through one relative approach-speed scorer and pair gate. Collapse multiple stickman limbs into one rig/prop pair, require separation/rearm plus a short cooldown, and clear baselines at PLAY/reset boundaries. Keep existing collision-rule dispatch independent. See `docs/specs/phase_17c_impact_wobble.md`. (2026-10-13) |
-| 70  | **Impact strength is initially speed based while prop mass is preset based** — material presets set `RigidBody2D.mass`, but fixed props are frozen and mass is not a child-facing setting. | Low | Planned | Keep the Phase 17c Wobble boolean and visual-only response independent of mass. Centralize impact scoring so a future editable-mass or impulse design can be evaluated without altering the Stage switch or migrating old scene choices. Do not infer a physical impulse from a frozen prop's preset mass; verify any future mass effect separately. See `docs/specs/phase_17c_impact_wobble.md`. (2026-10-13) |
+| 69  | **Contact entry alone can miss a stickman hitting a fixed prop** — grounded locomotion stops at a shape-sweep safe fraction, sometimes before `body_entered` fires; resting contacts can also chatter after pause or quick separation. | Medium | Implemented; verification pending | Phase 17c routes identified blocking-prop sweep hits and actual body contacts through one relative approach-speed scorer and pair gate. Multiple stickman limbs collapse into one rig/prop pair; separation/rearm and cooldown gates suppress repeat hits. Automated behavior verification and in-editor user verification remain pending. Keep existing collision-rule dispatch independent. See `docs/specs/phase_17c_impact_wobble.md`. (2026-10-14) |
+| 70  | **Impact strength is initially speed based while prop mass is preset based** — material presets set `RigidBody2D.mass`, but fixed props are frozen and mass is not a child-facing setting. | Low | Implemented; future design | Phase 17c keeps the Wobble boolean and visual-only response independent of mass. Impact scoring is centralized in `StageImpactResolver` so a future editable-mass or impulse design can be evaluated without altering the Stage switch or migrating old scene choices. Do not infer a physical impulse from a frozen prop's preset mass; verify any future mass effect separately. See `docs/specs/phase_17c_impact_wobble.md`. (2026-10-14) |
 
 ---
 
@@ -165,5 +165,6 @@ This document tracks known technical debt, optimization opportunities, and minor
 | 2026-10-10 | Sandbox Stage composition refactor slices 1–16 implemented (`docs/specs/sandbox_stage_composition_refactor.md`): extracted spatial indexing, terrain painting, stage chrome and views, document/scene adapters, run/director/rule/action/speech sessions, asset browsing, theme loading, and target capture. `sandbox_stage.gd` is 5,009 lines, about 34% smaller than the approximate 7,600-line baseline; the below-3,800-line target remains open. Godot 4.7.1 root `--check-only` parse passes. No behavior tests or in-editor checks were run; #67 remains In Progress. |
 | 2026-10-10 | Phase 17b Use spots implemented from the approved architecture/UI specs (`docs/specs/phase_17b_use_spots.md`, `docs/specs/phase_17b_use_spots_ui.md`). Instance-local numbered spots persist in `.scene` v1.3; Use requires empty hands, targets keep normal physics with one bounded approach replan, and reach stays grounded. `prop_used` fires only after hand contact; missing references remain repairable after save/load. Phase 17b suite passes 27/27, Phase 17a regression passes 46/46, and edited scripts parse; ready for in-editor user verification. Logged #68 for conditional preview of earlier rules/moving physics; #12, #19, #24, and #67 already cover AABB selection, popup host visibility, session rule IDs, and root controller size. |
 | 2026-10-13 | Phase 17c Impact wobble architecture specification drafted for final user sign-off (`docs/specs/phase_17c_impact_wobble.md`). A placed prop's saved boolean controls a visual-only wobble in PLAY and a brief EDIT preview. Contact entry plus identified stickman blocking sweeps feed a shared approach-speed gate, including ragdolls and both members of a prop-prop hit. Mass stays independent of the switch, with impact scoring isolated for future mass or impulse work. Scene version advances to 1.4 with older scenes defaulting Off. Logged #69–#70. No implementation code changed. |
+| 2026-10-14 | Phase 17c Impact wobble implementation is present against the approved UI and architecture contracts. The prop card has a per-placement switch and EDIT sample; PLAY routes contacts and identified blocking sweeps through the approach-speed resolver, including ragdoll and prop pairs, while wobbling artwork only. Scene v1.4 stores the setting and migrates older scenes to Off; STOP/reset clears transient motion. Automated behavior verification and in-editor user verification have not been completed. Updated #69–#70; mass-aware scoring remains a future design seam. |
 
 _End of Log_

docs/plans/phase_17_props_for_storytelling.md

@@ -1,6 +1,6 @@
 # Phase 17 — Props for Storytelling
 
-> **Status:** Accepted product brief. Phase 17a is user-approved. Phase 17b implementation is present and awaiting in-editor user verification; Phases 17c–17d remain deferred.
+> **Status:** Accepted product brief. Phase 17a is user-approved. Phase 17b implementation is present and awaiting in-editor user verification. Phase 17c implementation is present; automated behavior verification and in-editor user verification are pending. Phase 17d remains deferred.
 > **Audience:** UI/UX, architect, and implementation team.
 > **Purpose:** Product and design brief; technical contracts belong in later specifications.
 
@@ -18,7 +18,7 @@ Phase 17 is one product milestone with four ordered parts. Each part should be i
 | --- | --- | --- |
 | **17a — Prop roles and placement** | Arrange props behind or in front of characters; choose independent physical and interaction capabilities; build pass-through support props; select covered props in EDIT; use **Set Down** to release a held prop at a chosen stage spot. | First and highest | Implemented and user-approved |
 | **17b — Use spots** | Mark a handle, button, or lever on a placed prop, direct a stickman to use it, and respond through a rule. | Next | Implemented; awaiting user verification |
-| **17c — Impact wobble** | Make a prop briefly wobble after a meaningful hit. | Next | Deferred |
+| **17c — Impact wobble** | Make a prop briefly wobble after a meaningful hit. | Next | Implemented; awaiting automated behavior and in-editor user verification |
 | **17d — Scene groups** | Organize and move several placed props together while editing a scene. | Last; lower priority | Deferred |
 
 17a's role model, saved-scene migration, fixed depth tiers, covered-object chooser, collision handling, Set Down action, and UI are implemented and user-approved. Automated test run: no execution result is documented for `tests/test_phase17a_prop_roles.gd`. The success criteria below remain regression guidance. Depth is currently a fixed behind/in-front choice; dynamic Y sorting remains deferred.
@@ -41,7 +41,7 @@ A successfully completed interaction emits a child-facing **Used prop** event th
 
 ### 17c — Impact wobble
 
-The child can choose a simple impact response for a placed prop: **None** or **Wobble**. A noticeable physical hit produces one short, controlled wobble that settles cleanly. Ordinary resting contact should not make a prop shake repeatedly. The stage's existing collision rules remain available for more elaborate consequences. Stopping PLAY cancels any active wobble and restores the authored prop appearance and placement.
+The child can turn **Wobble when bumped** on or off for one placed prop. Enabling it in EDIT plays a brief sample; the choice remains available for pass-through props. In PLAY, a qualifying approach-speed hit produces a short tilt and sideways give on the artwork while the physics body and collisions continue normally. Contact and blocking-movement sweep candidates share one resolver with pair rearming and cooldown gates; animated stickmen, ragdoll bodies, other props, and other physics bodies can supply hits when collision policy allows. Two enabled props can both wobble from one qualifying prop-to-prop hit. Scene v1.4 stores the choice per placement, and older scene versions default it to Off. Stopping PLAY cancels the effect and restores the authored state. The current score is based on approach speed, not mass; the resolver keeps scoring centralized for future mass or impulse work.
 
 ### 17d — Scene groups
 
@@ -74,15 +74,14 @@ Deferred: dynamic Y sorting by character and prop ground points; built-in Use ef
 - `scripts/stage/stage_selection.gd` provides `hit_test_all()` and the stage shows an **Objects here** chooser for overlapping candidates. The current hit test uses world-space AABBs rather than exact vector-shape containment, so the chooser may include an object when the pointer is inside its bounds but outside its artwork.
 - Props use fixed behind/in-front draw tiers. Dynamic ground-point Y sorting remains deferred. `scripts/props/prop_anchor_data.gd` continues to describe reusable grip anchors; 17b Use spots are placed-instance data and remain distinct from those grips.
 - Phase 17b implementation is present. The architecture and UI contracts are documented in [Use spots: architecture](../specs/phase_17b_use_spots.md) and [Use spots: UI/UX](../specs/phase_17b_use_spots_ui.md). New Used prop rules choose one named spot; legacy whole-prop rules remain compatible. In-editor user verification is pending.
-- Stage collision events remain contact based. Phase 17c still needs a dependable hit-strength rule for a moving stickman striking a stationary prop without causing resting-contact jitter or requiring a child-facing force slider.
+- Phase 17c implementation is present in `scripts/props/prop_block.gd`, `scripts/stage/stage_impact_resolver.gd`, `scripts/editors/stage/sandbox_stage.gd`, `scripts/editors/stage/stage_prop_settings_view.gd`, `scripts/editors/stage/stage_run_session.gd`, `scripts/editors/stage/stage_scene_adapter.gd`, and `scripts/stage/stage_scene_io.gd`. The prop card provides the per-placement switch and EDIT sample, including for pass-through props. PLAY applies a visual-only wobble to artwork; root physics motion and collision geometry remain under normal simulation. Body contacts and identified blocking-stickman sweeps use relative approach speed, with pair tracking and cooldown to suppress repeated resting/push contact. Ragdoll and prop-prop contacts are routed through the resolver. Scene v1.4 persists the boolean and migrates older scenes to Off. Material preset mass is not part of the score; the shared resolver is the extension seam for a future editable-mass or impulse model. Automated behavior verification and in-editor user verification are pending; do not treat the implementation as verified yet.
 - Stage multiselection can move several objects together in one edit, but it does not save persistent group membership. Phase 17d must preserve independent member identities and prop-targeted actions when adding saved groups.
 - Relevant prior context: [Phase 11 prop interactions](../specs/phase_11_prop_interactions.md) and the live [feature backlog](../ideas/feature_backlog.md).
 
 ## Regression checks and future design questions
 
-17a's settings controls, overlap chooser, Set Down release-point behavior, legacy scene defaults, implementation, and UI are user-approved. Keep the table/pot support and pass-through case, blocking movement, open-air and corrected Set Down targets, invalid-target recovery, covered-object selection, repeat PLAY reset, and old-scene replay as regression guidance.
+17a's settings controls, overlap chooser, Set Down release-point behavior, legacy scene defaults, implementation, and UI are user-approved. Keep the table/pot support and pass-through case, blocking movement, open-air and corrected Set Down targets, invalid-target recovery, covered-object selection, repeat PLAY reset, and old-scene replay as regression guidance. For 17c, regression checks should cover EDIT preview and cancellation; pass-through availability; fixed and moving props; a walking/running stickman contact and blocked movement sweep; a falling ragdoll; prop-to-prop hits with both enabled and one disabled; slow/resting contacts and sustained pushes; pause/resume and STOP/replay; per-instance save/reload; and v1.0–v1.3 migration to Off. These are pending checks, not reported results.
 
-The following design questions remain for the deferred parts of Phase 17:
+The following design question remains for the deferred part of Phase 17:
 
-- **17c — Impact wobble:** What impact measure and visual treatment make a wobble consistent across stationary props, moving props, and stickmen without repeated jitter?
 - **17d — Scene groups:** What EDIT gesture makes it clear whether the child is selecting a whole group or one member? How should group membership be shown without covering the set artwork?

docs/specs/phase_17c_impact_wobble.md

@@ -1,6 +1,6 @@
 # Phase 17c — Impact wobble: architecture and implementation specification
 
-> **Status:** Architecture specified for final user sign-off; implementation has not begun.
+> **Status:** Architecture approved and implementation present; automated behavior verification and in-editor user verification are pending.
 > **Product/UI contract:** [Phase 17 plan](../plans/phase_17_props_for_storytelling.md) and [Impact wobble UI/UX specification](phase_17c_impact_wobble_ui.md).
 > **Scope:** A per-placement Wobble setting, visual sample in EDIT, and a short visual response to meaningful physical hits in PLAY.