Toward a Unified Spatial Interface for Controlling Procedural Content Generation

Procedural Content Generation (PCG) is central to modern game development, where structured data input and controllability are critical to achieving high-quality, diverse, and context-aware results. This paper proposes a unified spatial interface for controlling PCG based on the Space Foundation System (SFS). By extending the SFS location graph with hierarchical organization and semantic attributes, we provide a shared spatial interface for diverse PCG systems. To integrate existing algorithms, we propose Data Transformers-modular components that translate location graph data into algorithmspecific parameters. We demonstrate the framework's applicability through three implemented scenarios in the context of asset placement for environmental generation. Our results highlight the potential of the SFS to streamline PCG workflows, enhance modularity, and support both automated and designer-driven content creation. This work contributes a step toward a unified spatial interface for PCG in games.