Method CreateCollision

Source/Engine/Terrain/TerrainPatch.cpp:2142–2172

#endif

void TerrainPatch::CreateCollision()
{
    PROFILE_CPU();
    PROFILE_MEM(LevelTerrain);
    ASSERT(!HasCollision());
    if (CreateHeightField())
        return;
    ASSERT(_physicsHeightField);

    // Create geometry
    const Transform terrainTransform = _terrain->_transform;
    CollisionShape shape;
    const float rowScale = Math::Abs(terrainTransform.Scale.X) * _collisionScaleXZ;
    const float heightScale = Math::Abs(terrainTransform.Scale.Y) * _yHeight / TERRAIN_PATCH_COLLISION_QUANTIZATION;
    const float columnScale = Math::Abs(terrainTransform.Scale.Z) * _collisionScaleXZ;
    shape.SetHeightField(_physicsHeightField, heightScale, rowScale, columnScale);

    // Create shape
    JsonAsset* materials[8];
    for (int32 i = 0; i < 8; i++)
        materials[i] = _terrain->GetPhysicalMaterials()[i];
    _physicsShape = PhysicsBackend::CreateShape(_terrain, shape, ToSpan(materials, 8), _terrain->IsActiveInHierarchy(), false);
    PhysicsBackend::SetShapeLocalPose(_physicsShape, Vector3(0, _yOffset * terrainTransform.Scale.Y, 0), Quaternion::Identity);

    // Create static actor
    void* scene = _terrain->GetPhysicsScene()->GetPhysicsScene();
    _physicsActor = PhysicsBackend::CreateRigidStaticActor(nullptr, terrainTransform.LocalToWorld(_offset), terrainTransform.Orientation, scene);
    PhysicsBackend::AttachShape(_physicsShape, _physicsActor);
    if (_terrain->IsDuringPlay())
        PhysicsBackend::AddSceneActor(scene, _physicsActor);
}

bool TerrainPatch::CreateHeightField()
{