public SmokeSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Create a single particle system and add it multiple times to the scene
// graph ("instancing"). By default, all instances look identical. The
// properties ParticleSystemNode.Color/Alpha/AngleOffset can be used to
// render the particles with some variations.
var particleSystem = Smoke.Create(ContentManager);
ParticleSystemService.ParticleSystems.Add(particleSystem);
_particleSystemNode0 = new ParticleSystemNode(particleSystem);
GraphicsScreen.Scene.Children.Add(_particleSystemNode0);
_particleSystemNode1 = new ParticleSystemNode(particleSystem);
_particleSystemNode1.PoseWorld = new Pose(new Vector3F(5, 0, -5));
_particleSystemNode1.Color = new Vector3F(0.9f, 0.8f, 0.7f);
_particleSystemNode1.Alpha = 0.8f;
_particleSystemNode1.AngleOffset = 0.3f;
GraphicsScreen.Scene.Children.Add(_particleSystemNode1);
_particleSystemNode2 = new ParticleSystemNode(particleSystem);
_particleSystemNode2.PoseWorld = new Pose(new Vector3F(-10, 5, -5), Matrix33F.CreateRotationZ(-ConstantsF.PiOver2));
_particleSystemNode2.Color = new Vector3F(0.5f, 0.5f, 0.5f);
_particleSystemNode2.AngleOffset = 0.6f;
GraphicsScreen.Scene.Children.Add(_particleSystemNode2);
}
public RibbonSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
GraphicsScreen.DrawReticle = true;
GameObjectService.Objects.Add(new GrabObject(Services));
// Load a sphere model.
_modelNode = ContentManager.Load<ModelNode>("Particles/Sphere").Clone();
GraphicsScreen.Scene.Children.Add(_modelNode);
// Add gravity and damping to the physics simulation.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Create a rigid body for the sphere.
_rigidBody = new RigidBody(new SphereShape(0.5f))
{
Pose = new Pose(new Vector3F(-3, 0, 0)),
LinearVelocity = new Vector3F(10, 10, -3f),
};
Simulation.RigidBodies.Add(_rigidBody);
_particleSystem = RibbonEffect.Create(ContentManager);
ParticleSystemService.ParticleSystems.Add(_particleSystem);
_particleSystemNode = new ParticleSystemNode(_particleSystem);
GraphicsScreen.Scene.Children.Add(_particleSystemNode);
}
public RingOfFireSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Create a new "empty" particle system.
var particleSystem = new ParticleSystem();
// Particle systems can have child particle systems.
// Add a fire and a smoke effect as children.
var fire = Fire.Create(ContentManager);
var smoke = Smoke.Create(ContentManager); // The smoke effect from the previous sample.
particleSystem.Children = new ParticleSystemCollection { fire, smoke };
// If we need to, we can modify the predefined effects.
// Change the smoke particle lifetime.
smoke.Parameters.Get<float>(ParticleParameterNames.Lifetime).DefaultValue = 4;
// Change the smoke's start positions to a ring.
smoke.Effectors.OfType<StartPositionEffector>().First().Distribution =
new CircleDistribution { InnerRadius = 2, OuterRadius = 2 };
// Position the particle system (including its child) in the level.
particleSystem.Pose = new Pose(new Vector3F(0, 3, 0));
// We only need to add the parent particle system to the particle system service.
// The service will automatically update the parent system each frame. The parent
// system will automatically update its children.
ParticleSystemService.ParticleSystems.Add(particleSystem);
// Add the particle system to the scene graph.
_particleSystemNode = new ParticleSystemNode(particleSystem);
GraphicsScreen.Scene.Children.Add(_particleSystemNode);
}
public GrassSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
ParticleSystem particleSystem = Grass.Create(ContentManager);
ParticleSystemService.ParticleSystems.Add(particleSystem);
_particleSystemNode = new ParticleSystemNode(particleSystem);
GraphicsScreen.Scene.Children.Add(_particleSystemNode);
}
public SuperEmitterSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
ParticleSystem particleSystem = new Rockets();
ParticleSystemService.ParticleSystems.Add(particleSystem);
_particleSystemNode = new ParticleSystemNode(particleSystem);
GraphicsScreen.Scene.Children.Add(_particleSystemNode);
}
public DepthSortingSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
_brownOut = new BrownOut(ContentManager);
ParticleSystemService.ParticleSystems.Add(_brownOut);
_particleSystemNode = new ParticleSystemNode(_brownOut);
GraphicsScreen.Scene.Children.Add(_particleSystemNode);
}
public FlameJetSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
_flameJet = FlameJet.Create(ContentManager);
_flameJet.Pose = new Pose(new Vector3F(0, 2, 0), Matrix33F.CreateRotationY(ConstantsF.PiOver2));
ParticleSystemService.ParticleSystems.Add(_flameJet);
_particleSystemNode = new ParticleSystemNode(_flameJet);
GraphicsScreen.Scene.Children.Add(_particleSystemNode);
}
public WaterFallSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
ParticleSystem particleSystem = WaterFall.CreateWaterFall(ContentManager);
particleSystem.Pose = new Pose(new Vector3F(0, 2, 0), Matrix33F.CreateRotationY(ConstantsF.Pi));
ParticleSystemService.ParticleSystems.Add(particleSystem);
_particleSystemNode = new ParticleSystemNode(particleSystem);
GraphicsScreen.Scene.Children.Add(_particleSystemNode);
}
public DecalSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
GraphicsScreen.DrawReticle = true;
SetCamera(new Vector3F(0, 2, 6), 0, 0);
_decals = Decals.Create(ContentManager);
ParticleSystemService.ParticleSystems.Add(_decals);
_particleSystemNode = new ParticleSystemNode(_decals);
GraphicsScreen.Scene.Children.Add(_particleSystemNode);
}
public ExplosionSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Create an instance of the Explosion particle system.
_explosion = new Explosion(ContentManager);
_explosion.Pose = new Pose(new Vector3F(0, 5, 0));
ParticleSystemService.ParticleSystems.Add(_explosion);
_particleSystemNode = new ParticleSystemNode(_explosion);
GraphicsScreen.Scene.Children.Add(_particleSystemNode);
_explosionSound = ContentManager.Load<SoundEffect>("Particles/Explo1");
}
public VolumetricCloudSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
SampleFramework.IsMouseVisible = false;
_graphicsScreen = new DeferredGraphicsScreen(Services);
_graphicsScreen.DrawReticle = true;
GraphicsService.Screens.Insert(0, _graphicsScreen);
GameObjectService.Objects.Add(new DeferredGraphicsOptionsObject(Services));
Services.Register(typeof(DebugRenderer), null, _graphicsScreen.DebugRenderer);
Services.Register(typeof(IScene), null, _graphicsScreen.Scene);
// Add gravity and damping to the physics simulation.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Add a custom game object which controls the camera.
var cameraGameObject = new CameraObject(Services);
GameObjectService.Objects.Add(cameraGameObject);
_graphicsScreen.ActiveCameraNode = cameraGameObject.CameraNode;
GameObjectService.Objects.Add(new GrabObject(Services));
_dynamicSkyObject = new DynamicSkyObject(Services, false, false, true);
GameObjectService.Objects.Add(_dynamicSkyObject);
GameObjectService.Objects.Add(new GroundObject(Services));
GameObjectService.Objects.Add(new ObjectCreatorObject(Services));
GameObjectService.Objects.Add(new LavaBallsObject(Services));
_particleCloud0 = new ParticleSystemNode(CreateParticleCloud(ContentManager))
{
PoseLocal = new Pose(new Vector3F(-0, 100, -400)),
};
ParticleSystemService.ParticleSystems.Add(_particleCloud0.ParticleSystem);
_graphicsScreen.Scene.Children.Add(_particleCloud0);
_particleCloud1 = new ParticleSystemNode(CreateParticleCloud(ContentManager))
{
PoseLocal = new Pose(new Vector3F(-200, 100, -200)),
};
ParticleSystemService.ParticleSystems.Add(_particleCloud1.ParticleSystem);
_graphicsScreen.Scene.Children.Add(_particleCloud1);
_particleCloud2 = new ParticleSystemNode(CreateParticleCloud(ContentManager))
{
PoseLocal = new Pose(new Vector3F(400, 400, -400)),
};
ParticleSystemService.ParticleSystems.Add(_particleCloud2.ParticleSystem);
_graphicsScreen.Scene.Children.Add(_particleCloud2);
}
public AnimatedTextureSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
_beeSwarm = BeeSwarm.Create(ContentManager);
_beeSwarm.Pose = new Pose(new Vector3F(0, 4, 0));
// Create 100 bees.
_beeSwarm.AddParticles(100);
ParticleSystemService.ParticleSystems.Add(_beeSwarm);
_particleSystemNode = new ParticleSystemNode(_beeSwarm);
GraphicsScreen.Scene.Children.Add(_particleSystemNode);
}
public void Initialize(ContentManager contentManager)
{
if (ParticleSystemNode == null)
{
// This is the first time this instance is used.
var ps = new ParticleSystem
{
Name = "Teleport" + _count,
ReferenceFrame = ParticleReferenceFrame.Local,
Children = new ParticleSystemCollection
{
CreateSparkles(contentManager),
CreateFastBeams(contentManager),
CreateSlowBeams(contentManager),
}
};
// Add a uniform float particle parameter that contains the particle system time.
ps.Parameters.AddUniform<float>("Time");
ps.Effectors.Add(new TimeToSingleEffector { Parameter = "Time" });
// Add a uniform GlobalAlpha parameter. This parameter controls the alpha of all
// child particle systems.
ps.Parameters.AddUniform<float>("GlobalAlpha");
ps.Effectors.Add(new SingleFadeEffector
{
ValueParameter = "GlobalAlpha",
TimeParameter = "Time",
FadeInStart = 0,
FadeInEnd = 2,
FadeOutStart = 2,
FadeOutEnd = 3,
});
ParticleSystemValidator.Validate(ps);
ParticleSystemValidator.Validate(ps.Children[0]);
ParticleSystemValidator.Validate(ps.Children[1]);
ParticleSystemValidator.Validate(ps.Children[2]);
ParticleSystemNode = new ParticleSystemNode(ps) { Name = "TeleportNode" + _count };
_count++;
}
else
{
ParticleSystem.Reset();
ParticleSystemNode.PoseWorld = Pose.Identity;
}
}
public CampfireSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
var particleSystem = Campfire.CreateCampfire(ContentManager);
// Add a smoke effect as a child to the campfire.
particleSystem.Children = new ParticleSystemCollection();
particleSystem.Children.Add(CampfireSmoke.CreateCampfireSmoke(ContentManager));
// Position the campfire (including its child) in the level.
// (The fire effect lies in the xy plane and shoots into the forward direction (= -z axis).
// Therefore, we rotate the particle system to shoot upwards.)
particleSystem.Pose = new Pose(new Vector3F(0, 0.2f, 0), Matrix33F.CreateRotationX(ConstantsF.PiOver2));
ParticleSystemService.ParticleSystems.Add(particleSystem);
_particleSystemNode = new ParticleSystemNode(particleSystem);
GraphicsScreen.Scene.Children.Add(_particleSystemNode);
}
// OnLoad() is called when the GameObject is added to the IGameObjectService.
protected override void OnLoad()
{
var particleSystemService = _services.GetInstance<IParticleSystemService>();
// The campfire consists of two particle systems (fire + smoke) and a light source.
//
// _campfire (SceneNode)
// |
// +-- _fireParticles (ParticleSystemNode)
// |
// +-- _smokeParticles (ParticleSystemNode)
// |
// +-- _light (LightNode)
// Use a basic scene node as the root node for the campfire.
_campfire = new SceneNode
{
Name = "Campfire",
PoseLocal = new Pose(new Vector3F(0, 0, -1)),
Children = new SceneNodeCollection()
};
// Add fire particles.
var contentManager = _services.GetInstance<ContentManager>();
var particleSystem = CreateFire(contentManager);
particleSystemService.ParticleSystems.Add(particleSystem);
_fireParticles = new ParticleSystemNode(particleSystem)
{
// The fire effect lies in the xy plane and shoots into the forward direction (= -z axis).
// Therefore we rotate the particle system to shoot upwards.
PoseLocal = new Pose(new Vector3F(0, 0.2f, 0), Matrix33F.CreateRotationX(ConstantsF.PiOver2))
};
_campfire.Children.Add(_fireParticles);
// Add smoke particles.
particleSystem = CreateSmoke(contentManager);
particleSystemService.ParticleSystems.Add(particleSystem);
_smokeParticles = new ParticleSystemNode(particleSystem)
{
PoseLocal = new Pose(new Vector3F(0, 0.2f, 0), Matrix33F.CreateRotationX(ConstantsF.PiOver2))
};
_campfire.Children.Add(_smokeParticles);
// Add a point light that illuminates the environment.
var light = new PointLight
{
Attenuation = 0.1f,
Color = new Vector3F(1, 0.2f, 0),
HdrScale = 20,
Range = 4
};
_light = new LightNode(light)
{
// Optional: We can make this light cast shadows - but this will cost performance!
//Shadow = new CubeMapShadow { PreferredSize = 64, FilterRadius = 2, JitterResolution = 2048 },
PoseLocal = new Pose(new Vector3F(0, 1f, 0))
};
_campfire.Children.Add(_light);
// Add campfire to scene.
var scene = _services.GetInstance<IScene>();
scene.Children.Add(_campfire);
// Particle effects can be added multiple times to the scene (= "instancing").
// Uncomment the following lines to add a few more instance to the scene.
//for (int i = 0; i < 10; i++)
//{
// var clone = _campfire.Clone();
// // Set random scale, position, orientation.
// clone.ScaleLocal = _random.NextVector3F(0.5f, 1.5f);
// var pose = _campfire.PoseWorld;
// pose.Position.X += _random.NextFloat(-10, 10);
// pose.Position.Z += _random.NextFloat(-10, 10);
// pose.Orientation = Matrix33F.CreateRotationY(_random.NextFloat(-ConstantsF.PiOver2, ConstantsF.PiOver2));
// clone.PoseLocal = pose;
// scene.Children.Add(clone);
//}
// Add GUI controls to the Options window.
var sampleFramework = _services.GetInstance<SampleFramework>();
var optionsPanel = sampleFramework.AddOptions("Game Objects");
var panel = SampleHelper.AddGroupBox(optionsPanel, "CampfireObject");
SampleHelper.AddCheckBox(
panel,
"Enable campfire",
IsEnabled,
isChecked => IsEnabled = isChecked);
}
// OnUnload() is called when the GameObject is removed from the IGameObjectService.
protected override void OnUnload()
{
// Clean up.
_campfire.Parent.Children.Remove(_campfire);
_campfire.Dispose(false);
_campfire = null;
_fireParticles = null;
_smokeParticles = null;
_light = null;
_random = null;
}
public DistortionSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
SampleFramework.IsMouseVisible = false;
_graphicsScreen = new DeferredGraphicsScreen(Services);
_graphicsScreen.DrawReticle = true;
GraphicsService.Screens.Insert(0, _graphicsScreen);
GameObjectService.Objects.Add(new DeferredGraphicsOptionsObject(Services));
Services.Register(typeof(DebugRenderer), null, _graphicsScreen.DebugRenderer);
Services.Register(typeof(IScene), null, _graphicsScreen.Scene);
// Add gravity and damping to the physics simulation.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Add a custom game object which controls the camera.
var cameraGameObject = new CameraObject(Services);
GameObjectService.Objects.Add(cameraGameObject);
_graphicsScreen.ActiveCameraNode = cameraGameObject.CameraNode;
GameObjectService.Objects.Add(new GrabObject(Services));
GameObjectService.Objects.Add(new StaticSkyObject(Services)); // Skybox + some lights.
//GameObjectService.Objects.Add(new GroundObject(Services));
// Add a ground plane with some detail to see the water refractions.
Simulation.RigidBodies.Add(new RigidBody(new PlaneShape(new Vector3F(0, 1, 0), 0)));
GameObjectService.Objects.Add(new StaticObject(Services, "Gravel/Gravel", 1, new Pose(new Vector3F(0, 0.001f, 0))));
GameObjectService.Objects.Add(new DudeObject(Services));
GameObjectService.Objects.Add(new DynamicObject(Services, 1));
GameObjectService.Objects.Add(new DynamicObject(Services, 2));
GameObjectService.Objects.Add(new DynamicObject(Services, 3));
GameObjectService.Objects.Add(new DynamicObject(Services, 5));
GameObjectService.Objects.Add(new DynamicObject(Services, 6));
GameObjectService.Objects.Add(new DynamicObject(Services, 7));
GameObjectService.Objects.Add(new ObjectCreatorObject(Services));
GameObjectService.Objects.Add(new FogObject(Services));
GameObjectService.Objects.Add(new CampfireObject(Services));
GameObjectService.Objects.Add(new LavaBallsObject(Services));
// Add a few palm trees.
Random random = new Random(12345);
for (int i = 0; i < 10; i++)
{
Vector3F position = new Vector3F(random.NextFloat(-3, -8), 0, random.NextFloat(0, -5));
Matrix33F orientation = Matrix33F.CreateRotationY(random.NextFloat(0, ConstantsF.TwoPi));
float scale = random.NextFloat(0.5f, 1.2f);
GameObjectService.Objects.Add(new StaticObject(Services, "PalmTree/palm_tree", scale, new Pose(position, orientation)));
}
// Add DistortionFilter to post-processors.
_distortionFilter = new DistortionFilter(GraphicsService, ContentManager);
_graphicsScreen.PostProcessors.Add(_distortionFilter);
// Add 3 particle systems.
// The ParticleSystems are added to the IParticleSystemService.
// The ParticleSystemNodes are added to the Scene of the DistortionFilter - not the usual Scene!
_fireDistortionParticleSystemNode = new ParticleSystemNode(CreateFireDistortionParticleSystem())
{
PoseLocal = new Pose(new Vector3F(0, 0f, -1), Matrix33F.CreateRotationX(ConstantsF.PiOver2)),
};
ParticleSystemService.ParticleSystems.Add(_fireDistortionParticleSystemNode.ParticleSystem);
_distortionFilter.Scene.Children.Add(_fireDistortionParticleSystemNode);
_explosionDistortionParticleSystemNode = new ParticleSystemNode(CreateExplosionDistortionParticleSystem())
{
PoseLocal = new Pose(new Vector3F(0, 0, -1)),
};
ParticleSystemService.ParticleSystems.Add(_explosionDistortionParticleSystemNode.ParticleSystem);
_distortionFilter.Scene.Children.Add(_explosionDistortionParticleSystemNode);
_novaDistortionParticleSystemNode = new ParticleSystemNode(CreateNovaDistortionParticleSystem())
{
PoseLocal = new Pose(new Vector3F(0, 0.5f, -1), Matrix33F.CreateRotationX(ConstantsF.PiOver2)),
};
ParticleSystemService.ParticleSystems.Add(_novaDistortionParticleSystemNode.ParticleSystem);
_distortionFilter.Scene.Children.Add(_novaDistortionParticleSystemNode);
}
private void CreateParticleSystem()
{
// Load a sphere model.
var modelNode = ContentManager.Load<ModelNode>("Particles/Sphere");
var meshNode = (MeshNode)modelNode.Children[0];
// Add gravity and damping to the physics simulation.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Create two instances of the sphere model.
_meshNode0 = meshNode.Clone();
GraphicsScreen.Scene.Children.Add(_meshNode0);
_meshNode1 = meshNode.Clone();
GraphicsScreen.Scene.Children.Add(_meshNode1);
// Create a rigid body for the left sphere.
_rigidBody0 = new RigidBody(new SphereShape(0.5f))
{
Pose = new Pose(new Vector3F(-3, 4, 0)),
};
Simulation.RigidBodies.Add(_rigidBody0);
// Create a rigid body for the right sphere. (Sharing the same shape, mass and material.)
_rigidBody1 = new RigidBody(_rigidBody0.Shape, _rigidBody0.MassFrame, _rigidBody0.Material)
{
Pose = new Pose(new Vector3F(3, 4, 0)),
};
Simulation.RigidBodies.Add(_rigidBody1);
// Extract basic triangle mesh from the sphere model.
var triangleMesh = meshNode.Mesh.Submeshes[0].ToTriangleMesh();
// Create a particle system for the left ball. This particle system uses
// ReferenceFrame == ParticleReferenceFrame.World - which is the default for all
// particle systems. Particles are all relative to world space. The particle system pose
// determines the start positions and direction (when the StartPositionEffector and
// StartDirectionEffector are in use). Particles do not move with the particle system.
_particleSystem0 = GlowingMeshEffect.Create(triangleMesh, ContentManager);
_particleSystem0.ReferenceFrame = ParticleReferenceFrame.World;
ParticleSystemService.ParticleSystems.Add(_particleSystem0);
_particleSystemNode0 = new ParticleSystemNode(_particleSystem0);
_meshNode0.Children = new SceneNodeCollection { _particleSystemNode0 };
// Create a particle system for the right ball. This particle system uses
// ReferenceFrame == ParticleReferenceFrame.Local. Particles are all relative to the
// particle system pose. Particles move with the particle system.
_particleSystem1 = GlowingMeshEffect.Create(triangleMesh, ContentManager);
_particleSystem1.ReferenceFrame = ParticleReferenceFrame.Local;
ParticleSystemService.ParticleSystems.Add(_particleSystem1);
_particleSystemNode1 = new ParticleSystemNode(_particleSystem1);
_meshNode1.Children = new SceneNodeCollection { _particleSystemNode1 };
}
public BasicParticlesSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Create a new "empty" particle system.
_particleSystem = new ParticleSystem();
// Names are optional, but very useful for debugging.
_particleSystem.Name = "MyFirstParticleSystem";
// The particle system uses pre-allocated arrays. We should define an upper limit for
// the number of particles that can be alive at the same moment.
_particleSystem.MaxNumberOfParticles = 200;
// The particle system's Pose defines the position and orientation of the particle system
// in the world.
_particleSystem.Pose = new Pose(new Vector3F(0, 2, 0));
// The properties of the particles in the particle system are defined using
// "particle parameters" (in the collection _particleSystem.Parameters).
// Per default, there is only one parameter: "NormalizedAge" - which is managed
// by the particle system itself and is the age of a particle in the range 0 - 1.
// All our particles should live for 1 second after they have been created. Therefore,
// we add a "uniform" parameter called "Lifetime" and set it to 1.
var lifetimeParameter = _particleSystem.Parameters.AddUniform<float>("Lifetime");
lifetimeParameter.DefaultValue = 1f;
// Each particle should have a position value. Therefore, we add a "varying" parameter
// called "Position". "Varying" means that each particle has its own position value.
// The particle system will internally allocate a Vector3F array to store all particle
// positions.
_particleSystem.Parameters.AddVarying<Vector3F>("Position");
// When particles are created, we want them to appear at random position in a spherical
// volume. We add an effector which initializes the particle "Positions" of newly created
// particles.
_particleSystem.Effectors.Add(new StartPositionEffector
{
// This effector should initialize the "Position" parameter.
// Parameter = "Position", // "Position" is the default value anyway.
// The start values should be chosen from this random value distribution:
Distribution = new SphereDistribution { OuterRadius = 2 }
});
// The particles should slowly fade in and out to avoid sudden appearance and disappearance.
// We add a varying particle parameter called "Alpha" to store the alpha value per particle.
_particleSystem.Parameters.AddVarying<float>("Alpha");
// The SingleFadeEffector animates a float parameter from 0 to a target value and
// back to 0.
_particleSystem.Effectors.Add(new SingleFadeEffector
{
// If TargetValueParameter is not set, then the target value is 1.
//TargetValueParameter = 1,
// The fade-in/out times are relative to a time parameter.
// By default the "NormalizedAge" of the particles is used.
//TimeParameter = "NormalizedAge",
// The Alpha value should be animated.
ValueParameter = "Alpha",
// The fade-in/out times relative to the normalized age.
FadeInStart = 0.0f,
FadeInEnd = 0.3f,
FadeOutStart = 0.5f,
FadeOutEnd = 1.0f,
});
// Next, we choose a texture for the particles. All particles use the same texture
// parameter, which means the parameter is "uniform".
var textureParameter = _particleSystem.Parameters.AddUniform<Texture2D>("Texture");
textureParameter.DefaultValue = ContentManager.Load<Texture2D>("Particles/LensFlare");
// The blend mode is a value between 0 and 1, where 0 means additive blending
// 1 means alpha blending. Values between 0 and 1 are allowed. The particles in
// this example should be drawn using additive alpha blending.
var blendModeParameter = _particleSystem.Parameters.AddUniform<float>("BlendMode");
blendModeParameter.DefaultValue = 0.0f;
// There is a lot to configure. Did we forget anything? - We can use an optional helper method
// to validate our particle system. Uninitialized or missing parameters are printed to the
// Console. Check the Visual Studio Output window for any messages.
ParticleSystemValidator.Validate(_particleSystem);
// Adding the particle system to a ParticleSystemService is optional but very useful
// because the service will update the particle system for us in each frame.
ParticleSystemService.ParticleSystems.Add(_particleSystem);
// To render the particle effect, we need to create a scene node and add it to the
// scene graph.
_particleSystemNode = new ParticleSystemNode(_particleSystem);
GraphicsScreen.Scene.Children.Add(_particleSystemNode);
// A tip for the future:
// The class ParticleParameterNames is a collection of strings that can be used for
// common particle parameters. It is recommended to use the particle parameter names in
// this class to avoid problems because of typing errors in the source code.
}
