Terrain Physics Heightfield Collider Component

The Terrain Physics Heightfield Collider component provides terrain data to the physics system in the form of a heightfield and material assignments. You can configure the dimensions of the collider by modifying the Axis Aligned Box Shape component on the same entity.

Usage

You can assign which materials are assigned to surfaces, by selecting a surface type in the surface pull down menu, then selecting a physics material type in the material pull down.

Provider

Terrain Gem

Dependencies

Axis Aligned Box Shape

Properties

Terrain Physics Heightfield Collider component properties

Property	Description	Values	Default
Surface to Material Mappings	An array of surface tags and physics materials to map together.
Surface Tag	Selects a surface tag to map to a phsyics material.	Surface: Surface Tag	None
Material ID	Selects a physics material to apply to the surface.	Material: Physics Material	None

HeightfieldProviderRequestsBus

Use the following request functions with the HeightfieldProviderRequestsBus EBus interface to communicate with Terrain Physics Heightfield Collider components of your game.

Request Name	Description	Parameter	Return	Scriptable
`GetHeightfieldGridSpacing`	Returns the resolution of the heightfield.	None	Resolution: Vector2	No
`GetHeightfieldGridSize`	Returns the size of the heightfield in the form of a row and column count.	None	Row Count: Integer; Column Count: Integer	No
`GetMaterialList`	Returns an array of surfaces used by this component.	None	Array of Physics Materials Indexes: I	No
`GetHeights`	Returns the heightfield as an array of float values.	None	Array of Heights: Float	No
`GetHeightsAndMaterials`	Returns an array of the heights in the heightfield, together with the physics material index for each point.	None	Array of Heights: Float, Physics Material Indexes: Integer	No
`UpdateHeights`	Returns a subsection of the heightfield array within specific bounds.	Bounds: Aabb	Array of Heights: Float	No