Understanding building collision footprints and widget rules in beyond all reason

Why buildings have collision in BAR, what widgets are allowed in multiplayer, and how engine changes get adopted.

Tags: beyond all reason collision, building footprint, multiplayer mods, widget rules, engine development

Why buildings have collision

Every BAR building unit has a defined collision footprint. This is the physical space the building occupies on the terrain. The purple outline visible in the editor is not the actual footprint. The real footprint is a separate collision polygon that determines where other units can and cannot path.

Zero collision on buildings would break unit pathfinding. Without collision the engine cannot prevent units from walking through structures or calculate valid movement paths. The collision system keeps the simulation consistent for all players in multiplayer matches.

Widget rules in multiplayer

Posting a widget to the BAR modding channels and using it in multiplayer is not automatically bannable. The BAR code of conduct requires posting widget source, which the modding channels serve. However, widgets that provide unfair advantages could face action.

Many problematic widgets get blocked by the engine itself rather than requiring manual enforcement. The engine checks simulation-affecting code and prevents mismatched states across clients. This built-in protection catches most fairness issues before they become problems.

Engine changes require prototyping

Proposing engine changes for BAR works fastest when accompanied by a working prototype. Suggestions without tested implementation face slower adoption. The development team prioritizes changes backed by measurable data over abstract proposals.

If you lack the technical skills for engine prototyping, the alternative is articulating clear functional requirements and working with someone who can build the test. Community members with C++ or engine experience occasionally help translate ideas into testable changes.

Build knowledge, build teams

Understanding how BAR works under the hood makes you a more effective teammate. Creed of Champions values players who put effort into learning the game deeply and sharing what they discover.

[Crd] It is so easy to get on with everyone and there is zero toxicity. Just fun games of BAR which can have quite a toxic community usually.

Win with skill, teamwork, and respect.