public override void CreateScene(InvalidPhysicsJointDemoScene sceneSettings)
{
float colliderSize = 0.25f;
BlobAssetReference <Collider> collider = BoxCollider.Create(new BoxGeometry
{
Center = float3.zero,
Orientation = quaternion.identity,
Size = new float3(colliderSize),
BevelRadius = 0.0f
});
CreatedColliders.Add(collider);
// Add a dynamic body constrained to the world that will die
// Once the dynamic body is destroyed the joint will be invalid
{
// Create a dynamic body
float3 pivotWorld = new float3(-2f, 0, 0);
Entity body = CreateDynamicBody(pivotWorld, quaternion.identity, collider, float3.zero, float3.zero, 1.0f);
// create extra dynamic body to trigger Havok sync after the first one is destroyed
CreateDynamicBody(pivotWorld * 2.0f, quaternion.identity, collider, float3.zero, float3.zero, 1.0f);
// add timeout on dynamic body after 15 frames.
EntityManager.AddComponentData(body, new LifeTime {
Value = 15
});
// Create the joint
float3 pivotLocal = float3.zero;
var joint = PhysicsJoint.CreateBallAndSocket(pivotLocal, pivotWorld);
var jointEntity = CreateJoint(joint, body, Entity.Null);
// add timeout on joint entity after 30 frames.
EntityManager.AddComponentData(jointEntity, new LifeTime {
Value = 30
});
}
// Add two static bodies constrained together
// The joint is invalid immediately
{
// Create a body
Entity bodyA = CreateStaticBody(new float3(0, 0.0f, 0), quaternion.identity, collider);
Entity bodyB = CreateStaticBody(new float3(0, 1.0f, 0), quaternion.identity, collider);
// Create the joint
float3 pivotLocal = float3.zero;
var joint = PhysicsJoint.CreateBallAndSocket(pivotLocal, pivotLocal);
var jointEntity = CreateJoint(joint, bodyA, bodyB);
// add timeout on joint entity after 15 frames.
EntityManager.AddComponentData(jointEntity, new LifeTime {
Value = 15
});
}
// Add two dynamic bodies constrained together with 0 dimension
{
// Create a body
Entity bodyA = CreateDynamicBody(new float3(0, 5.0f, 0), quaternion.identity, collider, float3.zero, float3.zero, 1.0f);
Entity bodyB = CreateDynamicBody(new float3(0, 6.0f, 0), quaternion.identity, collider, float3.zero, float3.zero, 1.0f);
// Create the joint
var joint = PhysicsJoint.CreateLimitedDOF(RigidTransform.identity, new bool3(false), new bool3(false));
CreateJoint(joint, bodyA, bodyB);
}
}