Overview
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.
Key Features
- 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).
Compatibility
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
• Hull Style: NANAME Walls
Load after those mods. Should be safe to add to existing saves.
Performance
Lightweight: cached lookups and safe refreshes that only redraw nearby cells when snow/sand depth changes. Sand hooks are gated when Odyssey is absent.
Compatibility
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.)
Updates
27-01-2026 – Did some code optimization to address performance slowdowns in some cases.
21-01-2026 – Update to make it compatible with Hull Style: NANAME Walls. Making diagonal sand and snow overlays.
15-11-2025 – Fixed a bug where snow/sand overlay did not always show right on multiplelayers of walls.
Added a mod option page, added in a default ON option that allow snow/sand overlay to spawn under 1 tile of roof.
The 1 tile under roof was done to make it show better on player build houes and more consistent spawn on rocks.
04-11-2025 – Did some optimazation so it even more light on performance.
19-10-2025 – First release.
My other mods
