All players spawned at the exact same PlayerSpawn point and were on the
same collision layer, so two overlapping CharacterBody3Ds triggered a
physics depenetration shove that could launch one through the 1-unit-thick
floor.
- server.gd: golden-angle spawn spread -- each join lands ~1m+ from the
others, growing outward, never exactly repeating.
- server_player.tscn + player.tscn: players on collision layer 2, mask 1
(world only) -- players no longer collide with each other at all
(fine for a social game; also removes the shove).
- player_spawner.gd + player.gd: hard safety net -- if y < -10 (any
tunnel-through), snap back to the spawn instead of falling forever.
Verified: 3 server players spawn 1.15m+ apart, none fall, all rest on the
floor. 2p multiplayer + network_client smokes green.
Client-side -- rebuild the exe.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015jtxAiu5dAW4WxCNdGkrkJ
Made the multiplayer core actually work (it had never run a real sim):
- project.godot: physics pinned to 30 Hz -- the shared sim/snapshot/prediction rate.
- server.gd: loads the world's level (real ground + collision), spawns a
server Player per peer at the level's PlayerSpawn, broadcasts a full
snapshot every physics frame with each peer's state AND last_seq (the last
input seq applied for that peer). Accepts `--port/--world/--status-file`
args (status file = player count for a future idle reaper); defaults keep
`godot res://scenes/server.tscn` working standalone.
- player_spawner.gd (server Player): rewrote -- drains its whole input queue
each physics frame in seq order, integrates gravity/walk/jump with the
shared constants, move_and_slide(), tracks last_applied_seq. No more no-op
process_server_input().
- network_client.gd: rewrote reconciliation -- drops inputs the server has
acked (last_seq), re-simulates the still-in-flight ones from the
authoritative state, snaps only on real drift. Exposes get_remote_states()
(peer_id -> latest snapshot state) for the game to render other players.
predict_and_send() now also sends body yaw.
- proxies trimmed to the RPC set the rewrite actually uses.
- scripts/mp_test_client.gd + run_multiplayer_2p_test.sh: two real client
processes vs one real server -- client A sees client B and its own
movement round-trips. PASS.
- run_checkpoint_tests.py: also run the 2p shell test.
smoke_test_network_client 4/4, player 15/15, avatar_in_world 10/10, all green.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015jtxAiu5dAW4WxCNdGkrkJ
Two genuine bugs, found by reproducing rather than trusting the branch's
own state:
1. scenes/player.tscn collided with PC2's client-side player scene at the
exact same path (server-authoritative PlayerNode vs. the local
single-player character) -- whichever merged last would silently
overwrite the other. The branch's own last commit had literally
committed unresolved <<<<<<< conflict markers into the file instead of
resolving them. Renamed the server's version to
scenes/server_player.tscn, restored scenes/player.tscn to match main's
real client scene exactly, repointed scripts/server.gd's preload.
2. scenes/server.tscn's root Node had no script attached at all -- it only
ever worked before because project.godot had `Server` registered as a
project-wide autoload (the exact wholesale-overwrite this task was
already asked to fix). Once that autoload was correctly removed,
nothing attached server.gd to the scene tree anymore and the dedicated
server silently did nothing. Attached scripts/server.gd directly to
scenes/server.tscn's root node instead.
Verified: godot --headless --import/--quit both clean, full 10-suite
client smoke test all passing, and the dedicated server actually listens
on UDP port 7777 when launched explicitly (`godot --path . scenes/server.tscn`)
-- confirmed with `ss -ulnp`, not just trusting the startup print (first
checked with `ss -tlnp`, which only shows TCP and falsely suggested it
wasn't listening at all; ENet is UDP).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01M6rUEynmv2QmweocAQYARN
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