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.
_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 RingOfFireSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Create a new "empty" particle system.
_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);
}