Command Console & ConVar System
This update introduces a full console and configuration system in the style of Source-engine games like Counter-Strike. Press F1 to open the in-game command console, bind any command to any key, and tune the game through plain config files (keys.cfg, autoexec.cfg) in the game directory. Hundreds of fine-grained parameters are now exposed as convars — every command and binding is documented on the wiki.
SKALA / PRIZMA Rework
The SKALA/PRIZMA computer has been heavily reworked. Many more parameters are now available to query, including basic setpoint monitoring. MTK displays now behave like the real hardware: they report slightly stale data and refresh less frequently, reflecting the actual cycle time of the PRIZMA program on the original machine. See the wiki for the full list of available inputs.
New Reactor Core Thermal Feedback
The reactor core received a new set of thermal feedback mechanisms for much more realistic behavior:
Positive void coefficient of roughly +4.1 βeff, close to the historical value
Adjusted Doppler (fuel temperature) feedback
New graphite temperature feedback
Water temperature feedback in control rod channels
Gas-gap conductivity between graphite and fuel channels
Non-uniform burnup scatter
Reactor Core is slightly more non-uniformly burned to represent refueling cycle.
ZRK (channel water flow) valves are now trimmed by default to compensate for fuel burnup and ensure more uniform voiding. Valve trimming can be done though command console "reactor.balance_zrk" at any power level.
Improved fuel assembly feedback properties based on real world data.
New Wiki
A new wiki is live and will replace the current in-game manual:
https://wiki.rikarin.io/
Features
Console, Config & Input
Command console (F1)
ConVar system — fine-grained parameters configurable via autoexec.cfg or the console
Settings are now saved as .cfg files in the game directory
Key bindings are configurable from the settings menu or directly in keys.cfg / autoexec.cfg
All VIUR controls are exposed as commands and bindable to any key (see wiki)
Simulation/render speed (TPS/FPS) reworked into the param \ convar
Cheats must now be explicitly enabled with cheats 1
Interlock bypass (requires cheats) — more on the wiki
Player controller rebuilt on a Source 2–style controller
Panel key controls are constrained to your local position in front of the panel
Reactor Physics
New thermal feedback set: void, Doppler, graphite temperature, and rod-channel water (KOSUZ) feedback
KCTK gas circuit added, with its thermal feedback
Void slip implemented in fuel channel water
Non-uniform fuel burnup pattern improved to reflect real refueling history
Fine-grained diffusion simulation settings via convars
Various diffusion simulation speedups and improvements
Thermal network proof of concept — partially integrated into the core
Internal rework of control signals to deterministic "wires" settled once per tick
SKALA / PRIZMA
Heavily refactored and improved PRIZMA program
SKALA programs М (1, 2, 3, 4)
Correct boiling crisis coefficient (К0К0000)
Setpoint measurement (proof of concept)
Prohibitions (proof of concept)
Unit quadrants (second digit of К: 3–6)
Periodic MTK measurement (on by default, as before)
VU non-latching switches
Refactored numerical readout displays
Control Room & Panels
KOM — drop rods by disengaging servo power
ZRK per-channel water flow trimming valves
LAZ in-zone now actuates both LAZ rods when the LAR rod is fully inserted
LAZ triggers when either of the two AZ signals is present
Hysteresis added for AZS/AZSR, AZM/AZMM, and LAZ
Wired: LAR plotter, steam separator plotter, ISS plotter, core-side power current indicators (all 4 sides), AR-1/AR-2 tracking mode lights
Rod servo alarms and SFKRE alarms
VIUB mnemonic displays
Missing texts and controls added to the VIUR side
Texts and props added to wall panels
All alarm texts finished
Desk phone dials (props)
UI & Misc
Fixes
Achievements are disabled while cheats are enabled
Fixed AR probes non uniformly picking up flux due to numerical solver limitations
AZ-3 now reduces power to 20% instead of 50%
Fixed a major race condition in control signals (control knobs)
Fixed nondeterministic probe feedback (off-by-one tick)
Fixed Doppler feedback — it was artificially capped by a wrong denominator in the thermal transfer equation
Fixed xenon multiplier
Fixed DKE probing through SKALA's VU-1 interface — proper scaling, limited to DKE channels
Fixed SKALA VU-2 value and order inputs
Fixed SKALA VU "?" and "!" lights and error code outputs
Fixed VU buttons playing multiple sounds per click
Fixed К0Т0000 returning fuel temperature instead of gas temperature
Fixed DKE-R probe positions
Fixed AZ rod control matrix lights
Fixed LAZ emergency setpoint decrease
Fixed LAR setpoint autotuning and added hysteresis
LAR in PK mode now stays engaged during an unacceptable-imbalance trigger
Fixed AR disengaging in PK mode during unacceptable imbalance (e.g. AZ-3 trigger)
AR-2 now correctly takes priority over AR-1 when LAR is disabled
AR rod type no longer has displacers
Fixed switching from AZS to AZSR triggering an emergency when the period was slightly positive
AZS/AZSR switching delays now follow game time instead of real time
Fixed KpY mismatched units
USO deviations are clamped to the real unit's voltage range
Fixed USM non-linear feedback and scaling issue
Fixed kaleidoscope probe topology mismatch
Proper ESC handling in various UI windows
Saves are not backward compatible.
Reactor Hall is temporary disabled.
If you experience any issues you can switch to last-update branch.
