Combatives

## Combatives Beta Changelog

This beta introduces **tactical leaning as a brand-new movement feature**, letting players lean left or right around cover while keeping aiming, interaction, multiplayer behavior, and third-person presentation aligned. It also includes a large round of compatibility and animation fixes for HMG and Flan’s-style armor. 

### New: Tactical Leaning

* Added synchronized left/right tactical leaning.
* Leaning works consistently in every facing direction.
* First-person camera lean now matches the third-person player pose.
* Lean interaction origin follows the leaned player position instead of staying centered.
* Leaning is blocked by nearby walls so the effective viewpoint cannot pass through solid blocks.
* Camera movement stays smooth while walking, sprinting, turning, and crossing block boundaries.
* Improved the third-person lean stance with better hip, torso, and leg positioning.
* Added a restrained asymmetric leg brace so the pose looks more intentional and less like the entire player model was simply rotated.
* Fixed third-person lean appearing stronger or weaker depending on which direction the player faced.
* Leaning remains synchronized for multiplayer and keeps gameplay-relevant behavior server-authoritative.

### Aiming & Interaction

* Fixed first-person lean direction being visually reversed.
* Fixed mismatches between the leaned camera and the actual interaction/aiming origin.
* Leaning no longer causes camera smoothing to become choppy during normal movement.
* Camera motion remains visual-only and does not distort the authoritative point of aim.

### Crawling & Swimming

* Improved player-model cleanup when entering and leaving crawl/swim poses.
* Fixed stale leg transforms that could remain after returning to standing.
* Improved pose transitions when combining crawling, swimming, leaning, and ADS.
* Preserved normal walking and running animation underneath the additional movement poses.

### HMG Compatibility

* Fixed a third-person ADS issue that could prevent HMG guns from firing normally.
* Fixed HMG ADS arm poses being overwritten by Combatives crawl/swim animation.
* Improved transform ordering so HMG weapon poses and Combatives movement poses work together instead of overriding one another.

### Flan's Armor Compatibility

* Fixed Flan's armor arms not matching Combatives crawl/swim poses.
* Fixed armor arms not following HMG ADS positioning correctly.
* Fixed armor leg transforms remaining misaligned after leaving crawl.
* Improved armor alignment during more complex player poses.
* Flan's armor now follows the final resolved player pose more reliably across leaning, crawling, swimming, and ADS.

### Multiplayer & Stability

* Improved lean synchronization between the local player, server, and remote observers.
* Fixed several direction and interpolation issues that behaved differently depending on player orientation or movement.
* Improved pose cleanup across teleports, respawns, dimension changes, mounts, and other player state changes.

### FairPlay Deprecation

* The separate **FairPlay JAR is now deprecated**.
* Gameplay-affecting Combatives settings are now synchronized and enforced by the server, removing the main reason for maintaining a separate FairPlay build.
* Servers should use the standard Combatives JAR and control authoritative gameplay settings through the server configuration.
* Client-only visual preferences remain local where they do not affect gameplay.

### Developer Notes

* Unified lean direction around a shared player-local basis.
* Separated authoritative gameplay geometry from interpolated render geometry.
* Improved `ModelBiped` pose capture/restoration and compatibility ordering for HMG and Flan's `ModelCustomArmour`.
* Java 8 compilation and Mixin annotation processing passed for the relevant Combatives changes; final in-game compatibility validation is still recommended.
* Deprecated the FairPlay distribution in favor of the new server-authoritative runtime configuration snapshot.