Doubled – Forest Generator & Terrain Painter

Forest Generator

• Prefab list with weighted randomization – define any number of prefabs (trees, rocks, props…) each with an independent spawn probability weight
• Bounding box placement – draw the area directly in the scene or set it manually
• Perlin noise density – control where prefabs cluster and where they thin out using noise scale and threshold
• Random scale variation – set min/max scale per generation run
• Align to terrain normal – objects orient themselves to the slope they're placed on
• Seed-based randomization – repeat or vary results with a single seed value
• Preset save/load – store and recall your favourite configurations as JSON files

Terrain Painter

• Base layer – the ground material (e.g. grass) that covers everything
• Shore layer (sand) – paints a beach band around a configurable water level using world-space height. Supports smooth blending into the base layer, organic noise displacement on the shoreline edge, and a max-height cap to prevent painting sand on cliffs
• Slope layer (rock) – paints steep areas with a configurable slope threshold. Fades smoothly into the underlying material (grass or sand) using a configurable blend width. Respects a shore-avoidance zone so rocky cliffs near the water correctly show sand underneath, not rock
• Smart two-material resolve – because s&box terrain blends exactly two materials per texel, the painter automatically picks the best pair (rock over sand on a rocky beach, rock over grass inland, sand over grass on a flat beach)
• Preset save/load – same JSON system as the Forest Generator