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Host-authoritative multiplayer and cross-platform determinism (0.4.0) - #5

Merged

lowlevelmetal merged 148 commits into

mainfrom

integration

Oct 10, 2026

Merged

Host-authoritative multiplayer and cross-platform determinism (0.4.0)#5
lowlevelmetal merged 148 commits into
mainfrom
integration

Commits on Oct 9, 2026
- Trace the shared traffic on every machine for desync measurements
  
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  231069d
- Trace every player's car as each machine draws it, and measure the divergence
  
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  80b8b8e
- Let a car's simulation be saved, put back and run again on its own
  
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  48d1a70
- Show the shared traffic at the client car's time, predicted along its rails
  
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  2c8679c
- Carry the players' inputs to the host and its car states back
  
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  5f2f10d
- Let the host run a network race's props for everyone
  
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  0ab89fe
- Add mm2tool nettrace to measure the shared traffic's divergence
  
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  28683d3
- Let a client's car meet the host's flying props, and test the props' sync
  
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  9cbb2d6
- Let a client's car knock traffic loose at once, and predict cars by the ground they cover
  
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  e6802c2
- Share a knocked car's body that stands still as standing
  
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  8af6833
- Let only the host's copies of network cars break props
  
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  de11039
- Measure the second after a hit in mm2tool nettrace
  
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  6d2bde6
- Keep the shared cars a client has when they do not all fit
  
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  2a97bb0
- Choose the shared cars that fit by their usual cost, not this message's
  
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  217db24
- Give a prop what a car of the network car's mass would
  
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  609a455
- Test that a big crash's props stay within one datagram
  
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  30130da
- Give the moving police cars' error in mm2tool nettrace
  
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  7593b19
- Drive, queue and predict the players' cars one sample at a time
  
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  24dbd3d
- Let the host simulate every player's car from its player's inputs
  
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  3f73059
- Keep the props' code and tests clear of MSVC's pitfalls
  
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  3292ac5
- Document the host's props of a network race
  
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  b3253f7
- Document the shared traffic's prediction and the client's own knocks
  
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  a61f982
- Merge integration (the host simulates every player's car) into the props
  
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  committed
  9d0d8f6
- Merge integration (the host simulates every player's car)
  
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  bbf464c
- Keep a tenth of the traffic budget for the cars a client has
  
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  bb00328
- Show the shared traffic where the host will simulate the client's car
  
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  753c12b
- Run a client's corrected samples against the other cars where they stood
  
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  19e8271
- Trace the props in OPENMM2_NET_TRACE and report them in syncreport
  
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  ee48adc
- Let a replayed car meet the props with their mass
  
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  0791996
- Keep a car the client knocked loose until it comes to rest
  
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  df5c7cf
- Trace every simulated car's damaging impacts, by car
  
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  8e1fafd
- Test that only the host's knocks count, and document the merged props
  
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  4eb99e9
- Let the host alone decide Cops and Robbers' time and point limits
  
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  276e508
- Let a car the client knocked loose knock the next one loose
  
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  438fd01
- Keep a client's own pieces from moving the host's
  
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  6764d4d
- Add a development hook that rounds a client's car differently
  
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  921513d
- Hand a knocked car back to the host's messages 3 m apart, not 5
  
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  b01172e
- Record the props and damage desync work
  
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  committed
  71d9738
- Record the shared traffic's desync review
  
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  e994720
- Bring the shared traffic's parity rows up to date
  
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  6c859c3
- Note protocol 6 in the multiplayer docs
  
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  20c0030
- Let the host drop a client's inputs that piled up while it was busy
  
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  127ac41
- Log what a network client's corrections cost
  
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  65733d3
- Record the players' cars' desync and the host-authoritative cars
  
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  f92979f
- List the network and interpolation files in the parity manifest
  
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  52aa601
- Merge branch 'integration' into worktree-agent-aa20eb5f47fb73251
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  c48e3c6
- Keep the props' lines within 110 columns
  
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  ecd675c
- Merge integration (the shared traffic's desync work) into the props
  
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  committed
  235fe54
- Run a client's corrected samples against every body where it stood
  
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  c367288
- Let a client's replay take the knocks its car really took
  
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  784b3b1
- Test a replay just after a knock, and document the replays' props
  
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  5e68aff
- Record the final runs of the host-authoritative players' cars
  
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  cae6989
- Merge integration (the players' cars' final work) into the props
  
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  6bfda02
- Test that a replay knocks and moves no prop for real
  
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  7766963
- Let a client's predicted pieces knock other props only while young
  
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  f1f3b56
- Document the client's chain knocks
  
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  b06bba6
- Let a client simulate the players' cars near its own with it
  
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  c5c1b4c
- Run a car's checkpoints through a tracker the host can share
  
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  committed
  51c9f89
- Decide a network race's rules on the host and correct the clients
  
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- Let the host decide every network race's rules (protocol 8)
  
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  9ab7293
- Let a client's replay meet a knocked prop's pieces after the knock
  
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  59ca116
- Keep the players' cars in player order and run far ones again alone
  
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  94d542a
- Report how far apart the screens are once their delay is taken out
  
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- Record the props' final runs
  
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- Test the host's rules, a client's corrections and the rules message
  
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- Let the host reset a client's car only where the game's rules do
  
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- Carry what a car's sample hands the next with its state
  
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  38fcf08
- Record the props' final checks
  
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- List the host-run props' files in the parity manifest
  
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  14dc206
- Report how far the machines agree on a network race's rules
  
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  968a428
- Run a client's corrected samples against the traffic where it was then
  
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- Merge integration (the host's props, protocol 7)
  
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  14854c3
- Merge branch 'integration' into worktree-agent-a21adb9f783eb40d3
  
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  4dfe65d
Commits on Oct 10, 2026
- Keep the player's impact callback under the autopilot
  
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  619ce6f
- Refuse a respawn at a checkpoint the host never counted
  
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  4128b00
- Check every gold event against the host's simulation in the report
  
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  760c8b0
- End a race still counting down when the host times it out
  
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  1493217
- Keep a race this machine ended stopped through the host's word
  
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  dd41ea6
- Run a client's corrected samples against the traffic where each sample met it
  
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  60ddfd0
- Wrap two long lines
  
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- Test the rail cars standing elsewhere for a replay
  
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- Tell the report which counted hits a HUD shows
  
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  657a493
- Let automated Cops and Robbers runs draw the same first places
  
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  baf989a
- Count corrections a minute of the whole race
  
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- Let a client wait for the host when the gold is contested
  
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  4ac627b
- Record the second round of the players' cars' desync
  
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  04112e1
- Record the host's rules in the session audit and the cars review
  
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  d3ba498
- Merge branch 'integration' into worktree-agent-a21adb9f783eb40d3
  
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  b80cce3
- Wrap the host's rules' long lines
  
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- Record the review of the host's rules
  
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  f2bdb04
- List the host-decided rules' files in the parity manifest
  
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  f7b76fa
- Give the race start tests their own port block
  
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  782f469
- Trace when a client learns of its checkpoints and when the water resets a car
  
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  0c96102
- Send the players' cars' states every sample, with the inputs ahead
  
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  557ade8
- Wrap three long lines
  
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  943f98b
- Let the host decide the water, and tighten the rules' rough edges (protocol 14)
  
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  e168a58
- Put a client's car to the host's state whenever it runs again with near cars
  
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- Check that only the host's rules state reaches a player
  
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  8dbc9a3
- Report whether a client's own pickups showed before the host's word
  
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  da64b77
- Test a client waiting for the host when a car is about to reach the gold
  
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  86db4c6
- Keep Cops and Robbers' rules state at four messages a second
  
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  da767c3
- Carry the police and knocked cars in full, and every near car (protocol 12)
  
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  committed
  184c739
- Simulate the host's police and knocked cars with the client's car
  
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  baa3c01
- Give the simulation its own sin, cos, atan2, exp, log and pow
  
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  committed
  37d2123
- Build all of OpenMM2 without float contraction
  
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  committed
  ee94506
- Collide a client's knocked traffic cars in id order
  
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  222ee38
- Prove in CI that the simulation is the same on every platform
  
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  afa07bb
- Put an AI racer and cobbles in the determinism scenario
  
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  8641ea3
- Record the determinism review
  
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  4eafbba
- Give the CI Wine prefix to the container's own user
  
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  f8b0e73
- Smooth the props' rough edges: each client its own area, near cars' knocks
  
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  993c285
- Send in full only the knocked cars the host's world runs
  
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  aeb303a
- Send in full only the police cars the host's world runs
  
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  4cb28e1
- Record the Clang and MinGW runs of the determinism tests
  
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  93dca06
- Compare OpenMM2's maths with the C runtime in mm2tool
  
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  0c94198
- List the simulation's own maths library in the parity manifest
  
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  b33bebc
- Send the police in full within 60 m only, chasing or not
  
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  committed
  92628b2
- Describe protocol 12's shared traffic
  
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  claude
  committed
  efb3da4
- Merge branch 'integration' into worktree-agent-af5320a752138c430
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  committed
  6555cc7
- Merge branch 'integration' into worktree-agent-aa20eb5f47fb73251
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  committed
  f25438d
- Merge integration (the cross-platform determinism work) into the props
  
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  claude
  committed
  9d90704
- Merge branch 'integration' into worktree-agent-a21adb9f783eb40d3
  
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  claude
  committed
  1999c9f
- Record the second round of the shared traffic's review
  
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  committed
  038e44a
- Record the rules' second round
  
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  dcac542
- Let a client that fell behind the host's samples skip to them
  
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  0dbe185
- List the full traffic state message in the parity manifest
  
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  committed
  134c979
- Carry a contact's bound and hardest pusher with a car's state
  
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  committed
  601a35b
- Check the race start test's go by frame order, not a time window
  
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  committed
  8e74c96
- Merge integration (traffic round 2, protocol 12)
  
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  committed
  d94d88c
- Merge branch 'integration' into worktree-agent-a21adb9f783eb40d3
  
  lowlevelmetal
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  claude
  committed
  65529a6
- Record the props' rough edges round
  
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  a179197
- Merge integration (the shared traffic's second round) into the props
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  committed
  e7f2f07
- Describe the contact bookkeeping and the skip in the players' cars' section
  
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  committed
  ba818ca
- Predict the knocks of the police and traffic a client simulates
  
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  claude
  committed
  dcca773
- Merge integration (the host's rules, second round) into the props
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  committed
  ec7a39e
- Merge integration (rules round 2, protocol 14)
  
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  committed
  22fcbfd
- Wrap a long declaration
  
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  committed
  ea3ec52
- Let a near car's knock wait while the host has that car by the prop
  
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  committed
  cd9a409
- Record the props' final runs of the rough edges round
  
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  482ac2c
- Merge integration (props round 2, protocol 16)
  
  lowlevelmetal
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  committed
  4e41f5a
- Draw another client's near car at this machine's time
  
  lowlevelmetal
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  claude
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  7944ac5
- Record the players' cars' rough edges round
  
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  852eaa2
- Check the near set, the inputs ahead and a contact's bookkeeping in the fuzz test
  
  lowlevelmetal
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  claude
  committed
  7c4dcd0
- Merge integration (the players' cars' third round) into the props
  
  lowlevelmetal
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  committed
  ad3a8d2
- Send the pieces round a client's car in full (protocol 18)
  
  lowlevelmetal
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  committed
  262c0eb
- Record the props' third round
  
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  1cfc71d
- Call this version 0.4.0
  
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  7db4424
- Name the players' cars' wire header after what it carries
  
  lowlevelmetal
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  committed
  6ba4c79

Commits

Commits on Oct 9, 2026

Commits on Oct 10, 2026