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Networking: extend snapshot interpolation/reconciliation beyond TransformComponent #462
Description
Problem
The netcode stack is strong, but SnapshotInterpolator interpolates only TransformComponent (Networking/Replication/SnapshotInterpolator.cpp), and client reconciliation blends only transforms. Animation state, rigidbody velocity, and other replicated component state aren't interpolated/reconciled — causing jitter on rotating / animated / physics-driven networked entities.
Proposed approach
- Generalize interpolation/reconciliation to a registered set of interpolatable components (transform, velocity, animation state, key gameplay state) via the existing
ComponentReplicatorpath. - Per-component interpolation policy (lerp / slerp / step) declared alongside replication.
Acceptance criteria
- A networked animated / rotating / physics entity moves smoothly on remote clients (no per-snapshot popping).
Refinement of the existing (strong) netcode stack.
Score
capability: 3
craft: 3
stability: 2
decay: 1
effort: 3
confidence: 0.8
learning: 3
fun: 3
kano: performance
blocked_by: []
blocks: []
Rated per issue-scoring · score = confidence × (capability + craft + stability + decay) / effort, derived by the picker.
Activity
drsnuggles8 commentedon Jun 30, 2026
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Implemented in #483.
Acceptance criterion met — a networked animated / rotating / physics entity moves smoothly on remote clients (no per-snapshot popping):
ComponentInterpolationRegistrywith per-component policies (lerp / slerp / step), built on the existingComponentReplicatorpath.Register()call.InterpolatedComponentsSmoothOnRemoteClientTestdrives a real physics body (moving + spinning) through the actualEntitySnapshot→SnapshotInterpolatorpath on a separate client scene and asserts the pose blends smoothly between server snapshots (strictly interior, monotonic, no popping).The issue will auto-close when #483 merges.
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Merge pull request #483 from drsnuggles8/feature/netcode-snapshot-int…
fix(test): P2P rollback determinism asserts logical state, not snapsh…