The system works by having a slightly lower resolution proxy physics mesh – the same way you generally want to create lower resolution physics meshes for props. On a high level Unity allows animated meshes to have physics that move with them and interact with other physics accurately. As Parnell says, “Having players struggling in our extreme environment is a core Praey for the Gods gameplay mechanic, and tessellation helps us achieve it.” Setting up the snowy surfaces in this manner also enables No Matter to create areas of deep drifts where the player actually gets submersed, impeding their progress and heightening drama as they collide with the underlying terrain. So when the player or an object intersects with the snow we remove that section, giving the appearance that the snow has been pushed down, creating realistic footprints.” “Using tessellation, our snow tech pushes up snow based on the height we paint it on the terrain. “We wanted a solution that would allow characters and objects to push down the snow in a realistic way,” says Wiese. This allows designers to achieve far more detail on surfaces, depth and resolution to achieve ultimate fidelity. To achieve this, Chien and the team exploited Unity’s tessellation capabilities, which enables you to create geometry, such as polygons or closed shapes, that tessellates, or breaks down, into smaller and smaller geometries.
And Wiese adds: “We could just have used footstep decals to fake snow but we wanted something much more interactive and realistic.”
It’s so omnipresent it’s really like another boss,” says Parnell. “As well as creating some amazing epic bosses, we knew that snow would be crucial for us.
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