public override void Update(GameTime gameTime)
{
if (InputService.IsPressed(MouseButtons.Left, true) || InputService.IsPressed(Buttons.RightTrigger, true, LogicalPlayerIndex.One))
{
var cameraPose = GraphicsScreen.CameraNode.PoseWorld;
Vector3 cameraPosition = cameraPose.Position;
Vector3 cameraDirection = cameraPose.ToWorldDirection(Vector3.Forward);
// Create a ray for picking.
RayShape ray = new RayShape(cameraPosition, cameraDirection, 1000);
// The ray should stop at the first hit. We only want the first object.
ray.StopsAtFirstHit = true;
// The collision detection requires a CollisionObject.
CollisionObject rayCollisionObject = new CollisionObject(new GeometricObject(ray, Pose.Identity));
// Get the first object that has contact with the ray.
ContactSet contactSet = Simulation.CollisionDomain.GetContacts(rayCollisionObject).FirstOrDefault();
if (contactSet != null && contactSet.Count > 0)
{
// The ray has hit something.
// The contact set contains all detected contacts between the ray and the rigid body.
// Get the first contact in the contact set. (A ray hit usually contains exactly 1 contact.)
Contact contact = contactSet[0];
var hitPosition = contact.Position;
var normal = contact.Normal;
if (contactSet.ObjectA == rayCollisionObject)
{
normal = -normal;
}
// The particle parameter arrays are circular buffers. Get the particle array index
// where the next particle is created:
int particleIndex = (_decals.ParticleStartIndex + _decals.NumberOfActiveParticles) % _decals.MaxNumberOfParticles;
// Add 1 particle.
int numberOfCreatedParticles = _decals.AddParticles(1, null);
if (numberOfCreatedParticles > 0)
{
// We initialize the particle parameters Position, Normal and Axis manually using
// the results of the collision detection:
var positionParameter = _decals.Parameters.Get <Vector3>(ParticleParameterNames.Position);
positionParameter.Values[particleIndex] = hitPosition + normal * 0.01f; // We add a slight 1 cm offset to avoid z-fighting.
var normalParameter = _decals.Parameters.Get <Vector3>("Normal");
normalParameter.Values[particleIndex] = normal;
var axisParameter = _decals.Parameters.Get <Vector3>("Axis");
axisParameter.Values[particleIndex] = (normal == Vector3.Up) ? Vector3.Backward : Vector3.Up;
}
}
}
// Synchronize particles <-> graphics.
_particleSystemNode.Synchronize(GraphicsService);
Profiler.AddValue("ParticleCount", ParticleHelper.CountNumberOfParticles(ParticleSystemService.ParticleSystems));
}
public override void Update(GameTime gameTime)
{
// Synchronize particles <-> graphics.
_particleSystemNode.Synchronize(GraphicsService);
Profiler.AddValue("ParticleCount", ParticleHelper.CountNumberOfParticles(ParticleSystemService.ParticleSystems));
}
public override void Update(GameTime gameTime)
{
// Move the particle system with the camera.
_particleSystem.Pose = new Pose(GraphicsScreen.CameraNode.PoseWorld.Position);
// Synchronize particles <-> graphics.
_particleSystemNode.Synchronize(GraphicsService);
Profiler.AddValue("ParticleCount", ParticleHelper.CountNumberOfParticles(ParticleSystemService.ParticleSystems));
}
public override void Update(GameTime gameTime)
{
// The bee swarm effect needs the CameraPose to determine the bee texture orientation.
_beeSwarm.Parameters.Get <Pose>("CameraPose").DefaultValue = GraphicsScreen.CameraNode.PoseWorld;
// Synchronize particles <-> graphics.
_particleSystemNode.Synchronize(GraphicsService);
Profiler.AddValue("ParticleCount", ParticleHelper.CountNumberOfParticles(ParticleSystemService.ParticleSystems));
}
public override void Update(GameTime gameTime)
{
// Move the model and the particle system with the rigid body.
_modelNode.PoseWorld = _rigidBody.Pose;
_particleSystem.Pose = _rigidBody.Pose;
// Synchronize particles <-> graphics.
_particleSystemNode.Synchronize(GraphicsService);
Profiler.AddValue("ParticleCount", ParticleHelper.CountNumberOfParticles(ParticleSystemService.ParticleSystems));
}
public override void Update(GameTime gameTime)
{
if (InputService.IsDown(MouseButtons.Left) || InputService.IsDown(Buttons.RightTrigger, LogicalPlayerIndex.One))
{
_flameJet.AddParticles(6);
}
// Synchronize particles <-> graphics.
_particleSystemNode.Synchronize(GraphicsService);
Profiler.AddValue("ParticleCount", ParticleHelper.CountNumberOfParticles(ParticleSystemService.ParticleSystems));
}
public override void Update(GameTime gameTime)
{
// If enough time has passed, trigger the explosion sound and the explosion effect.
_timeUntilExplosion -= gameTime.ElapsedGameTime;
if (_timeUntilExplosion <= TimeSpan.Zero)
{
_explosion.Explode();
_explosionSound.Play(0.2f, 0, 0);
_timeUntilExplosion = ExplosionInterval;
}
// Synchronize particles <-> graphics.
_particleSystemNode.Synchronize(GraphicsService);
Profiler.AddValue("ParticleCount", ParticleHelper.CountNumberOfParticles(ParticleSystemService.ParticleSystems));
}
public override void Update(GameTime gameTime)
{
// Add 2 new particles in each frame.
_particleSystem.AddParticles(2);
// Particles are added and simulated when the particle system service is updated.
// In this example the service is updated in Game1.Update(). The service is updated
// after all GameComponents, before Game1.Draw().
// The ParticleSystemNode needs to be synchronized with the ParticleSystem.
// The Synchronize() method takes a snapshot of the current particles which
// is then rendered by the graphics service.
// (This explicit synchronization is necessary because the particle system
// service and the graphics service may run in parallel on multiple threads.)
_particleSystemNode.Synchronize(GraphicsService);
Profiler.AddValue("ParticleCount", ParticleHelper.CountNumberOfParticles(ParticleSystemService.ParticleSystems));
}
public override void Update(GameTime gameTime)
{
bool wasDepthSorted = _brownOut.IsDepthSorted;
_brownOut.IsDepthSorted = !(InputService.IsDown(MouseButtons.Left) || InputService.IsDown(Buttons.RightTrigger, LogicalPlayerIndex.One));
if (wasDepthSorted != _brownOut.IsDepthSorted)
{
// DigitalRune Graphics caches states like IsDepthSorted. To delete the cached data,
// we can delete the current ParticleSystem.RenderData.
_brownOut.RenderData = null;
foreach (var child in _brownOut.Children)
{
child.RenderData = null;
}
}
// Synchronize particles <-> graphics.
_particleSystemNode.Synchronize(GraphicsService);
Profiler.AddValue("ParticleCount", ParticleHelper.CountNumberOfParticles(ParticleSystemService.ParticleSystems));
}
public override void Update(GameTime gameTime)
{
_waitTime -= gameTime.ElapsedGameTime;
if (_waitTime < TimeSpan.Zero)
{
// Time to start the next effect at a random position.
var position = _boxDistribution.Next(RandomHelper.Random);
// Create teleport effect (the effect comes from a resource pool).
var teleport = _pool.Obtain();
teleport.Initialize(ContentManager);
teleport.Pose = new Pose(position);
// Add the teleport effect to the particle system service and the scene.
ParticleSystemService.ParticleSystems.Add(teleport.ParticleSystem);
GraphicsScreen.Scene.Children.Add(teleport.ParticleSystemNode);
_teleportEffects.Add(teleport);
_waitTime = TimeSpan.FromSeconds(1);
}
// Update teleport effects and recycle them if they are dead.
for (int i = _teleportEffects.Count - 1; i >= 0; i--)
{
var teleport = _teleportEffects[i];
bool isAlive = teleport.Update(GraphicsService);
if (!isAlive)
{
ParticleSystemService.ParticleSystems.Remove(teleport.ParticleSystem);
GraphicsScreen.Scene.Children.Remove(teleport.ParticleSystemNode);
_teleportEffects.RemoveAt(i);
_pool.Recycle(teleport);
}
}
Profiler.AddValue("ParticleCount", ParticleHelper.CountNumberOfParticles(ParticleSystemService.ParticleSystems));
}
public override void Update(GameTime gameTime)
{
// Update SceneNode.LastPoseWorld (required for optional effects, like motion blur).
_meshNode0.SetLastPose(true);
_meshNode1.SetLastPose(true);
// Synchronize pose of rigid body and model.
_meshNode0.PoseWorld = _rigidBody0.Pose;
_meshNode1.PoseWorld = _rigidBody1.Pose;
// The particle system nodes are attached to the mesh nodes. Their pose is
// updated automatically.
// _particleSystem0 is relative to world space, we need to update its
// pose explicitly.
_particleSystem0.Pose = _rigidBody0.Pose;
// Synchronize particles <-> graphics.
_particleSystemNode0.Synchronize(GraphicsService);
_particleSystemNode1.Synchronize(GraphicsService);
Profiler.AddValue("ParticleCount", ParticleHelper.CountNumberOfParticles(ParticleSystemService.ParticleSystems));
}