Stand Your Ground: Fixing Collision on Dynamic Parts

Roblox Patch 702 includes a critical, long-awaited fix for a persistent and disruptive physics bug related to player-to-player collision when standing on moving or dynamic platforms. This glitch caused players to exert excessive, unwanted pushing forces on each other, often leading to them being violently shunted off elevators, trains, or large moving objects, compromising fairness and stability in platforming and transport-focused games.

Key factual elements of the collider fix:

  • Target: Dynamic Platform Collision: The fix addresses an error in the engine’s physics calculation when the character’s HumanoidRootPart is anchored to or moving with a large, dynamic BasePart. The prior calculation often incorrectly applied forces between nearby players.
  • Problem Mitigation: The bug manifested most severely when multiple players stood close together on the same moving object. Even slight character movement resulted in disproportionate pushing forces, frustrating group travel or combat on dynamic elements.
  • Goal: Predictable Physics: The developers’ intent was to ensure that player collision forces remain localized and predictable, overriding the faulty environmental physics interaction caused by the platform’s movement. Player interaction on moving surfaces should feel the same as on static ground.

This fix is paramount for games relying on stable, high-fidelity platforming and interactive environments.

Community Reaction: Relief for Developers and Players

The community response is highly favorable, particularly from developers of popular transport, obstacle course (Obby), and simulation games that heavily rely on moving platforms.

  • “Game-Breaking” Fix: Players and developers alike referred to the prior bug as “game-breaking” for specific genres. The removal of the unintentional pushing force is hailed as a major stability success, allowing players to concentrate on gameplay mechanics rather than fighting the physics engine.
  • Fairness Restored: For competitive or survival games where platform stability is key (e.g., escaping a collapsing structure), the fix ensures fairness by eliminating the random chance of being unfairly pushed to death by a neighboring character.
  • Positive Impact on Obbies: The fix is especially crucial for complex Obby games, where precise platforming is required. Now, moving platforms, often used as challenging elements, can be utilized without the risk of an adjacent player ruining the attempt.

Strategic Impact: Expanding Gameplay Horizons

The correction of the moving platform collision bug has positive strategic implications for game design possibilities on the platform.

Firstly, it expands game design possibilities. Developers can now safely incorporate complex, multi-person moving mechanisms (like vehicles, massive boss battle arenas, or synchronized elevators) without fearing that basic physics will break the experience.

Secondly, it improves the multiplayer experience. The fix ensures that cooperative or competitive play on dynamic structures is stable and enjoyable, reinforcing the core social and multiplayer nature of the Roblox platform.

Patch 702’s fix for player collision on moving platforms is a vital stability enhancement. By resolving a frustrating physics bug, the developers have ensured reliable interaction on dynamic surfaces, making sophisticated platforming and transport mechanics viable for all creators.