Physics

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DirtyElement Grid acceleration structure cell size in cm. 0 or less will disable the feature

The maximum number of dirty elements that can be added to a single grid cell before spilling to slower flat list

Maximum grid cells to query (per raycast for example) in DirtyElement grid acceleration structure before falling back to brute force

If a dirty element stradles more than this number of cells, it will no be added to the grid acceleration structure

Additional padding added to bounding boxes for dynamic AABB trees to amortize update cost

Dynamic Tree Leaf Capacity

If Min/Max of particle world bounds exceeds this threshold, element is put in global array instead of being used in leaf splitting.

Split AABB tree nodes at the average of the element centers

Split AABB tree nodes along the axis with the largest element center variance

Allow AABB tree elements to update internal payload data when they recieve a payload update

To avoid sudden velocity changes when a root motion source moves the pawn from a moving base to free fall, this CVar will enable the FormerBaseVelocityDecayHalfLife property on CharacterMovementComponent.

Whether to use ISPC optimizations in physics aggregate geometry calculations

Primitive Component physics 0: disable cached overlaps, 1: enable (default)

When enabled, allows Clients in Networked Games to destroy non-networked actors (AActor::Role == ROLE_None). Does not change behavior on Servers or Standalone games.

Do not create constraints between two rigid kinematics.

Allow \'Not For Dedicated Server\' flag on PhysicsAssets 0: ignore flag, 1: obey flag (default)

Hack to convert actors with query and ignore all to always create physics.

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Set an override angular ether drag value. -1.f to disable

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Enables/Disables anim dynamics node updates.

Filters p.animdynamics.showdebug to a specific bone by name.

Enable/disable the drawing of animdynamics data.

Enables/disables adaptive substepping. Adaptive substepping will substep the simulation when it is necessary and maintain a debt buffer for time, always trying to utilise as much time as possible.

When set to 1, will enable more detailed stats.

Max LOD that anim dynamics is allowed to run on. Provides a global threshold that overrides per-node the LODThreshold property. -1 means no override.

Number of frames to maintain as time debt when using adaptive substepping, this should be at least 1 or the time debt will never be cleared.

Forces anim dynamics to be enabled for only a specified LOD, -1 to enable on all LODs.

Enables/Disables anim dynamics wind forces globally.

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1 enables asynchronous simulation of character movement on physics thread. Toggling this at runtime is not recommended.

How many multiples of the fixed dt should we look behind for interpolation

Setting to 0 blocks on any physics steps generated from past GT Frames, and blocks on none of the tasks from current frame. 1 blocks on everything except the single most recent task (including tasks from current frame). 1 should gurantee we will always have a future output for interpolation from 2 frames in the past.

0 means always on regular tick (default); 1 means only if not deferring updates; 2 means update and save based movement both on regular ticks and post physics when on a physics base.

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Whether to use a seperate tree of grids for bp

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Whether to use the PhysX unified heightfield. This feature of PhysX makes landscape collision consistent with triangle meshes but the thickness parameter is not supported for unified heightfields. 1 enables and 0 disables. Default: 1

Whether to use ISPC optimizations when computing AABB transforms

Set to 1: Cache the overlapping leaves for faster overlap query, any other value will disable the feature

Set to 1: Sort Dynamic and Static bodies into seperate acceleration structures, any other value will disable the feature

The Maximum number of bytes to copy to the external acceleration structure during Copy Time Slicing

If the update queue reaches this limit, time slicing will be disabled, and the acceleration structure will be built at once

Use a dynamic BVH tree structure for dynamic objects

0 is off, 1 is on (default)

Whether to use ISPC optimizations in AxialSpring constraints

If we have more constraints than this, use parallel-for in Apply.

Whether to use ISPC optimizations in calculating box bounds in geometry collections

Whether to use ISPC optimizations in CalculateBounds

When rolling back to TOI, allow (smallest bound\'s extent) * AllowedDepthBoundsScale, instead of rolling back to exact TOI w/ penetration = 0.

Allow force disable CCD.

Even if we are out of iterations, do the sweep for remaining dt instead of adjusting V. Could cause tunnelling in some cases, but prevents loss of momentum.

CCD is used when object position is changing > smallest bound\'s extent * BoundsScale. 0 will always Use CCD. Values < 0 disables CCD.

For debugging, manually disable CCD always.

Whether to cull contacts early based on phi for sweeps for all shape pairs (not just convex convex).

Only enable CCD for dynamic-static pairs.