public override void Start()
{
simulation = this.GetSimulation();
simulation.Gravity = new Vector3(0, 0, 0);
if (Input.Gravity.IsSupported) // enables the orientation sensor.
Input.Gravity.IsEnabled = true;
}
public override void Start()
{
simulation = this.GetSimulation();
simulation.Gravity = new Vector3(0, -9, 0);
cubeRigidBody = cube.Get<RigidbodyComponent>();
cubeRigidBody.CanSleep = false;
sphereRigidBody = sphere.Get<RigidbodyComponent>();
sphereRigidBody.CanSleep = false;
// Create the UI
constraintNameBlock = new TextBlock
{
Font = Font,
TextSize = 55,
TextColor = Color.White,
};
constraintNameBlock.SetCanvasPinOrigin(new Vector3(0.5f, 0.5f, 0));
constraintNameBlock.SetCanvasRelativePosition(new Vector3(0.5f, 0.83f, 0));
Entity.Get<UIComponent>().Page = new UIPage
{
RootElement = new Canvas
{
Children =
{
constraintNameBlock,
CreateButton("Next", Font, 1),
CreateButton("Previous", Font, -1)
}
}
};
// Create and initialize constraint
PhysicsSampleList.Add(CreatePoint2PointConstraint);
PhysicsSampleList.Add(CreateHingeConstraint);
PhysicsSampleList.Add(CreateGearConstraint);
PhysicsSampleList.Add(CreateSliderConstraint);
PhysicsSampleList.Add(CreateConeTwistConstraint);
PhysicsSampleList.Add(CreateGeneric6DoFConstraint);
PhysicsSampleList[constraintIndex]();
//Add a script for the slider constraint, to apply an impulse on collision
cubeRigidBody.ProcessCollisions = true;
Script.AddTask(async () =>
{
while (Game.IsRunning)
{
var collision = await cubeRigidBody.NewCollision();
if (!(currentConstraint is SliderConstraint)) continue;
if (collision.ColliderA != sphereRigidBody && collision.ColliderB != sphereRigidBody) continue;
sphereRigidBody.LinearVelocity = Vector3.Zero; //clear any existing velocity
sphereRigidBody.ApplyImpulse(new Vector3(-25, 0, 0)); //fire impulse
}
});
}
public override void Start()
{
camera = Entity.Get<CameraComponent>();
simulation = this.GetSimulation();
}
public static bool ScreenPositionToWorldPositionRaycast(Vector2 screenPos, CameraComponent camera, Simulation simulation, out ClickResult clickResult)
{
Matrix invViewProj = Matrix.Invert(camera.ViewProjectionMatrix);
Vector3 sPos;
sPos.X = screenPos.X * 2f - 1f;
sPos.Y = 1f - screenPos.Y * 2f;
sPos.Z = 0f;
var vectorNear = Vector3.Transform(sPos, invViewProj);
vectorNear /= vectorNear.W;
sPos.Z = 1f;
var vectorFar = Vector3.Transform(sPos, invViewProj);
vectorFar /= vectorFar.W;
clickResult.ClickedEntity = null;
clickResult.WorldPosition = Vector3.Zero;
clickResult.Type = ClickType.Empty;
clickResult.HitResult = new HitResult();
var minDistance = float.PositiveInfinity;
var result = simulation.RaycastPenetrating(vectorNear.XYZ(), vectorFar.XYZ());
foreach (var hitResult in result)
{
ClickType type = ClickType.Empty;
var staticBody = hitResult.Collider as StaticColliderComponent;
if (staticBody != null)
{
if (staticBody.CollisionGroup == CollisionFilterGroups.CustomFilter1)
type = ClickType.Ground;
if (staticBody.CollisionGroup == CollisionFilterGroups.CustomFilter2)
type = ClickType.LootCrate;
if (type != ClickType.Empty)
{
var distance = (vectorNear.XYZ() - hitResult.Point).LengthSquared();
if (distance < minDistance)
{
minDistance = distance;
clickResult.Type = type;
clickResult.HitResult = hitResult;
clickResult.WorldPosition = hitResult.Point;
clickResult.ClickedEntity = hitResult.Collider.Entity;
}
}
}
}
return (clickResult.Type != ClickType.Empty);
}
