f4fef294286539108f9cb8095aab76a782260d76
3
Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
  CydandClaude Opus 5
|
f4fef29428 |
The map keeps drawing when the view gets busy
Two testers reported the map and the countdown clock freezing, one of them only on larger, more complex maps, and one of them until a death. Both details point at the same place. The gauges and the cockpit displays are redrawn in whatever time is left after the 3D view. The background loop is guaranteed a single pass per frame and gets more only while time remains before the frame is due, and one pass drew exactly one gauge. So a full sweep of ninety-odd gauges needed ninety-odd passes - free when there is spare frame, but on a busy map the 3D view eats all of it, the loop drops to its one guaranteed pass, and a sweep takes ninety-odd FRAMES. Seconds. A death makes the renderer skip every static object, the budget frees up, and the backlog drains at once: the display appears to come back to life. Worse, the copy phase that follows ended after a SINGLE display, so the map - one of three - came round only every third sweep. So: draw gauges to a 2ms slice rather than one per pass, which ties the refresh rate to elapsed time instead of to how much spare frame there happened to be; and copy every display before reporting the sweep done. Measured on a deliberately starved frame budget, which reproduces the reported symptom: 0.7 sweeps/s before, 3.1 after. At a normal budget 20/s, against 18-19 before - no cost to the healthy case. RP412GAUGESLICE tunes the slice and 0 restores the old behaviour, which reproduces the 0.7 exactly. RP412GAUGEDIAG=1 logs the rate; watching the screen cannot tell a display that has stopped refreshing from one whose picture simply is not changing, which is what made this hard to see. Also fixes the constructor calling Update() three lines before it initialised mDisplayToUpdate, so the first pass indexed the D3D device and surface arrays with whatever was on the stack. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
||
|
CydandClaude Opus 5
|
82e733c1a6 |
Replicants reckon from when an update was sent
Simulation::ReadUpdateRecord threw away the sender's timestamp and
stamped lastUpdate with its own arrival time. The line carried the
original authors' own note: "HACK - should be based upon
message->timeStamp".
The dead reckoner extrapolates a replicant over
(lastPerformance - lastUpdate), so starting that clock at ARRIVAL rather
than at SEND leaves every remote vehicle exactly one network latency
behind where it should be. On the 1 ms LAN inside an arcade that is
nothing. Over Steam Datagram Relay it is 50-150 ms of positional lag on
every other player - a constant bias, not jitter, and the information
needed to remove it was already in the packet.
The timestamp cannot be used as it stands: both machines run
QueryPerformanceCounter since their own boot, so the two clocks share no
epoch. The offset is estimated per peer instead. Each record gives
sample = ourNow - theirStamp = trueOffset + oneWayLatency
and latency is never negative, so the smallest sample seen is the
closest to the truth. A rolling minimum over 128 samples follows crystal
drift and re-adapts when a route gets slower, rather than being pinned
forever by one lucky packet; a shorter path is believed immediately.
Applied with two clamps: never ahead of our own clock, and never further
back than 500 ms. Past that the packet is stale or the estimate is
wrong, and throwing a vehicle half a second forward does more damage
than the lag being corrected.
Entity::UpdateMessageHandler is the only point on the receive path that
knows whose update this is - records carry a timestamp but not an owner -
so it publishes the sender around the loop, and only for entities
somebody else owns. Offsets are forgotten in CreateMission: the hosts in
the next race are not the hosts in the last one and a HostID gets reused.
RP412NETCLOCK=0 restores the arrival-time behaviour, documented in
environ.ini, so a test machine can compare the two without a rebuild.
The estimate is logged per host when it first settles and whenever it
moves more than 50 ms, which is what a three-machine session should be
read against.
WHAT IS AND IS NOT VERIFIED. A full single-player race runs unchanged -
the path is never entered without replicants, which is the regression
risk that reaches everybody. The behaviour this exists for needs real
latency between real machines and is therefore untested: a two-instance
loopback race would only have exercised the zero-latency case, where the
correction is a no-op by construction. Expect remote vehicles to sit
further forward than before, and watch for overshoot when somebody
changes direction sharply - that is the tradeoff this makes, and the
clamp above is what bounds it.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
|
||
|
CydandClaude Opus 5
|
4f34684b16 |
environ.ini is written on first run, not shipped
Packing one into every zip meant a tester who unzipped a new build over their folder got their configuration replaced. bindings.txt has never had that problem, because the exe carries the template and writes the file only when it is absent. environ.ini now works the same way, so a new build can land on an existing folder and every setting survives. The 245-line template moves out of pack-dist.ps1 and into RPL4ENVIRON.cpp as the exe's own literal, which also means the exe alone can produce a working install. It was lifted mechanically rather than retyped, and the file it writes is line-for-line identical to the one we have been shipping - only the line endings changed, from a mongrel 243 LF plus one stray CRLF that PowerShell's Set-Content left on the end, to the uniform LF the game already writes bindings.txt with. It cannot simply become optional. Without environ.ini, L4GAUGE is unset - which disables the gauge renderer and takes every MFD with it - and L4MFDSPLIT is unset, which is the packed-window arcade layout rather than the glass cockpit. The shipped values ARE the desktop game; the built-in getenv fallbacks are the 1995 pod. So the game writes the file rather than tolerating its absence. The cost of a file that is never overwritten is that a tester carrying one across many builds stops being offered new options. Nothing breaks - an option added later defaults to "behave as before" - but it goes unnoticed, and "the podium does not work" is a confusing bug report when the real answer is that their environ.ini predates RP412PODIUM. So the load names every template key the player's file has never mentioned, and says they are at built-in defaults and that deleting the file brings the documented one back. A stale seven-line file lists all 40. The file is read, never rewritten. The mention test is deliberately generous - a key counts as known if it appears in any form, commented or not - because the failure it guards against is worse than a missed notice: environ.ini is applied line by line, so a second copy of a key appearing later in the file would silently override the player's own. The version line also moves to the top of WinMain. It used to print after the environment was loaded, so the first thing in rpl4.log was a message about environ.ini rather than which build wrote it. Verified: the written file matches the old shipped one line for line; an edited file with a hand-added comment survives another run untouched; a seven-line file from an older build boots and names all 40 options it has never heard of; and a full mission on a self-written file brings up the glass cockpit at 125% with the virtual RIO active and nothing alarming in the log. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |