Large Rocks

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OVERVIEW

In ARK, Large Rocks are a special class of asset. A single Large Rock has the following properties:

  • Covers significant gameplay area that would otherwise be Landscape
  • Can be considered a major, characteristic terrain feature from far away
  • Benefits greatly from receiving and casting far distance shadows

REQUIREMENTS

Large Rocks can be placed as StaticMeshes in Far sub-levels along with Large Trees, provided:

  • There are less than 20 Large Rocks per Far sub-level - This is no longer valid but don't go crazy.
  • Lowest LOD less than 2,000 tris
  • Use Far Shadow = True (in StaticMesh editor, is read-only in level actor)
  • Generate Mesh Distance Fields = True (in StaticMesh editor)
  • Affect Distance Field Lighting = True (in level actor - should be set automatically)
  • Collision Preset = Ground (in level actor)
  • Desired Max Draw Distance = 150,000 (in level actor)


LargeRockSettings.png

MOUNTAIN BIOME EXCEPTION

Large Rocks with Far Shadows are critical to the look of Mountain Biomes. Everything above also applies to Large Rocks in the Mountain Biome, except that the Desired Max Draw Distance should be 0. This makes the rocks visible from any distance.

MountainRocks.jpg

COLLISION

The lowest LOD should be used for collision, and in general should be < 2,000 tris. To enable the lowest LOD as per-triangle collision, set the following flags in the static mesh editor for the asset:

  • Really Use Triangle Mesh Collisions: True
  • Use Last LODInstead of First for Collision Mesh: True
ARK-LargeRockCollision.jpg