a func to draw antialiased rounded filled rectangles
Vizier-Xrects vizier: a package for managing sprites and the screen, provides scrolling, scaling, and collision response.
xrects: a package for polygons. uses the pygame rect as the axis aligned bounding box (AABB), and subclasses the rect to add the polygon object and methods for collision detection.
Vizier 2d game world and sprite management library