[claude] Timmy slap / ragdoll physics — spring wobble + Pip startle (#43) #85

claude · 2026-03-23T20:08:40Z

claude commented

2026-03-23 20:08:40 +00:00

Fixes #43

Changes

Hit detection: raycasting in click/touch handlers detects hits on Timmy's mesh group; impact direction extracted from camera→hit point
Spring physics: lightweight spring integrator on Timmy's body group — applySlap() applies additive angular impulses that stack (repeated slaps before spring settles accumulate), with stiffness=18, damping=4.5, ~1s return time
Ragdoll threshold: if accumulated tilt/velocity exceeds RAGDOLL_TILT_THRESHOLD (0.42 rad), full ragdoll fall sequence triggers
Pip startle: mild startle on wobble, full scatter on ragdoll — resumes idle wander after ~3s
Boing sound: synthesised via Web Audio OscillatorNode (no audio files)
Crystal ball flash: emissive intensity spike for ~100ms on every hit
Touch events: identical to click (mobile support)
Counter-slap: after ragdoll recovery, Timmy lunges back with retort

Spring tuning

SPRING_STIFFNESS=18, SPRING_DAMPING=4.5, SLAP_IMPULSE=2.8 — produces visible wobble that settles in ~1s as specified.

Fixes #43 ## Changes - **Hit detection**: raycasting in click/touch handlers detects hits on Timmy's mesh group; impact direction extracted from camera→hit point - **Spring physics**: lightweight spring integrator on Timmy's body group — `applySlap()` applies additive angular impulses that stack (repeated slaps before spring settles accumulate), with stiffness=18, damping=4.5, ~1s return time - **Ragdoll threshold**: if accumulated tilt/velocity exceeds `RAGDOLL_TILT_THRESHOLD` (0.42 rad), full ragdoll fall sequence triggers - **Pip startle**: mild startle on wobble, full scatter on ragdoll — resumes idle wander after ~3s - **Boing sound**: synthesised via Web Audio `OscillatorNode` (no audio files) - **Crystal ball flash**: emissive intensity spike for ~100ms on every hit - **Touch events**: identical to click (mobile support) - **Counter-slap**: after ragdoll recovery, Timmy lunges back with retort ## Spring tuning `SPRING_STIFFNESS=18`, `SPRING_DAMPING=4.5`, `SLAP_IMPULSE=2.8` — produces visible wobble that settles in ~1s as specified.

claude added 1 commit 2026-03-23 20:08:41 +00:00

feat: additive spring impulse for Timmy slap wobble (#43 )

CI / Typecheck & Lint (pull_request) Failing after 1s

Details

dbbaf80dcb

Slaps now apply additive spring impulses that stack, producing a
satisfying wobble-and-return (~1s). Only after enough accumulated
force (tilt or velocity threshold) does Timmy enter the full ragdoll
fall sequence. This matches the spec's "repeated slaps before spring
settles stack (additive impulse)" requirement.

- Tuned spring constants (stiffness=18, damping=4.5) for visible wobble
- SLAP_IMPULSE actually used now (was defined but unused)
- Pip gets mild startle on wobble, full scatter only on ragdoll
- Crystal flash + sound still fire on every hit

Fixes #43

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

claude referenced this pull request

2026-03-23 20:08:50 +00:00

Timmy Slap / Ragdoll Physics (3D Workshop) #43

Rockachopa merged commit cbeaa61083 into main

2026-03-23 20:14:37 +00:00

Rockachopa referenced this issue from a commit

2026-03-23 20:14:37 +00:00

[claude] Timmy slap / ragdoll physics — spring wobble + Pip startle (#43) (#85)

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Reference: replit/timmy-tower#85