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Sand & Snow Coverage

Sand & Snow Coverage adds immersive snow and sand buildup on walls, natural rock, and a range of patched mod objects (see Compatibility). It works much like RimWorld’s vanilla snow-on-trees effect: nearby ground coverage is sampled so light dustings grow into thicker caps/edges, then recede with the weather.

This mod started as a side project for my other mod Advanced Bridges & Floors and works very well together with that.

- Natural buildup: Appears only where nearby ground actually has snow/sand for believable results indoors, outdoors, and courtyards.
- Vanilla-like behavior: Mirrors the feel of the tree snow system (thresholds and gradual growth/melt).
- Roof-aware visuals: No buildup under roofs. If you build a roof later, any existing snow/sand overlay on that structure is cleared automatically.
- Smart linking on walls: Seamless corners and fillers so long wall runs look continuous.
- Gentle tint layer: Optional soft color wash to blend overlays with your textures.
- Sand overlay (Odyssey required): Sand visuals only activate when Odyssey’s sand systems are present; otherwise sand is cleanly disabled (no errors).

Works out-of-the-box for many structures. Includes patches for:
• Advanced Bridges & Floors (platforms)
• Medieval Walls
• ReBuild: Doors and Corners
• Vanilla Furniture Expanded – Architect

Load after those mods. Should be safe to add to existing saves.

Lightweight: cached lookups and safe refreshes that only redraw nearby cells when snow/sand depth changes. Sand hooks are gated when Odyssey is absent.

Texture replacers: Mods that add or replace textures on objects can make snow/sand overlays fail to appear or look misaligned. For walls and natural rocks, simple texture swaps usually work fine as long as the mod doesn’t change how the thing is defined (no custom shaders/graphics behavior).
Adding support to new things: Create three small textures — snow overlay, sand overlay, and tint — following the examples in this mod’s Textures folder. Then add a tiny XML patch to the target ThingDef to enable them. (Note: the sand overlay only activates if Odyssey is installed.)

19-10-2025 – First release.

See all my mods here