Per-entity Component attached to PlayerCharacter instead of global
Resource. Makes the interaction buffer multiplayer-ready (D-009) —
each observer gets their own buffer without pipeline refactoring.
Updated all 8 files touching the buffer: system signatures, player
spawn bundles, and ~30 test spawn sites.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Implement compute_nearby_interactions system that detects entities
within close (≤2) and mid (≤5) Manhattan distance, computes
available verbs per D-060 spec. NPCs get Talk+Observe at close
range, Observe-only at mid range; PersonOfInterest flips priority.
Objects get Examine. Results populate nearby_interactions[] on
ObserverSnapshot v4. Bump protocol version 3→4. Implements #404.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Implements tickets #237 and #238 for Sprint 3:
- Add pathfinding crate dependency for A* algorithm
- PathRequest component triggers compute_paths system which uses
cardinal-neighbor A* with manhattan distance heuristic
- ComputedPath component with step navigation (next_step, advance,
is_complete) and PathBlocked marker for no-route cases
- MovementSpeed component throttles NPC movement (ticks_per_step)
- follow_paths system advances NPCs along computed paths, creating
MoveIntent per step; cleanup_path_blocked removes markers after
one tick
- System ordering: input → compute_paths → follow_paths →
validate_movement → cleanup_path_blocked → advance_tick
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Snapshot for tick N should show state at END of tick N. Reorder systems
so generate_snapshot runs after validate_movement but before
advance_tick. Previously snapshot.tick was the incremented tick,
not the tick whose inputs were processed. Also fix main.rs accept
error to log address context before exiting.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Implements the full server-side tick pipeline:
- process_player_input drains InputQueue, converts PlayerActions to
MoveIntent components or pause/unpause toggles
- generate_snapshot builds ObserverSnapshot from ECS state with
render coordinate conversion
- receive_bridge_inputs/send_bridge_snapshot handle bridge I/O with
graceful disconnect detection via ServerRunning resource
- main.rs now accepts TCP connections and runs a proper game loop
- PlayerCharacter marker, Player EntityKind, SnapshotBuffer resource
Closes server side of #81, #82, #83.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
TilePosition component with discrete grid coordinates, flat-storage
WalkabilityMap resource with O(1) can_move_to() lookup, MoveIntent
component and validate_movement system. Movement validated against
walkability map each tick, blocking all NPC and player movement
through unwalkable tiles. 11 unit tests + 1 integration test.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.6