/// <summary>
/// Constructs a new particle emitter object.
/// </summary>
public ParticleEmitter(ParticleSystem particleSystem,
float particlesPerSecond, Vector3 initialPosition)
{
this.particleSystem = particleSystem;
timeBetweenParticles = 1.0f / particlesPerSecond;
previousPosition = initialPosition;
}
/// <summary>
/// Constructs a new projectile.
/// </summary>
public Projectile(ParticleSystem explosionParticles,
ParticleSystem explosionSmokeParticles,
ParticleSystem projectileTrailParticles)
{
this.explosionParticles = explosionParticles;
this.explosionSmokeParticles = explosionSmokeParticles;
// Start at the origin, firing in a random (but roughly upward) direction.
position = new Vector3(326, 5, -281);
velocity.X = (float)(random.NextDouble() - 0.5) * sidewaysVelocityRange;
velocity.Y = (float)(random.NextDouble() + 0.5) * verticalVelocityRange;
velocity.Z = (float)(random.NextDouble() - 0.5) * sidewaysVelocityRange;
// Use the particle emitter helper to output our trail particles.
trailEmitter = new ParticleEmitter(projectileTrailParticles,
trailParticlesPerSecond, position);
}
void InitializeParticles()
{
// Construct our particle system components.
explosionParticles = new ExplosionParticleSystem(parentGame, parentGame.Content);
explosionSmokeParticles = new ExplosionSmokeParticleSystem(parentGame, parentGame.Content);
shotSmokeParticles = new ShotSmokeParticleSystem(parentGame, parentGame.Content);
shotExplosionParticles = new ShotExplosionParticleSystem(parentGame, parentGame.Content);
ringExplosionParticles = new RingExplosionParticleSystem(parentGame, parentGame.Content);
projectileTrailParticles = new ProjectileTrailParticleSystem(parentGame, parentGame.Content);
smokePlumeParticles = new SmokePlumeParticleSystem(parentGame, parentGame.Content);
fireParticles = new FireParticleSystem(parentGame, parentGame.Content);
sparkParticles = new SparkParticleSystem(parentGame, parentGame.Content);
concreteParticles = new ConcreteParticleSystem(parentGame, parentGame.Content);
buildingColumn = new BuildingColumnParticles(parentGame, parentGame.Content);
buildingDisk = new BuildingDiskParticles(parentGame, parentGame.Content);
// Set the draw order so the explosions and fire
// will appear over the top of the smoke.
smokePlumeParticles.DrawOrder = 100;
explosionSmokeParticles.DrawOrder = 200;
shotSmokeParticles.DrawOrder = 250;
projectileTrailParticles.DrawOrder = 300;
explosionParticles.DrawOrder = 400;
shotExplosionParticles.DrawOrder = 450;
fireParticles.DrawOrder = 500;
ringExplosionParticles.DrawOrder = 510;
concreteParticles.DrawOrder = 510;
sparkParticles.DrawOrder = 520;
buildingColumn.DrawOrder = 600;
buildingDisk.DrawOrder = 620;
// Register the particle system components.
Particles = new List<ParticleSystem>();
Particles.Add(explosionParticles);
Particles.Add(explosionSmokeParticles);
Particles.Add(shotSmokeParticles);
Particles.Add(shotExplosionParticles);
Particles.Add(projectileTrailParticles);
Particles.Add(smokePlumeParticles);
Particles.Add(fireParticles);
Particles.Add(ringExplosionParticles);
Particles.Add(concreteParticles);
Particles.Add(sparkParticles);
Particles.Add(buildingColumn);
Particles.Add(buildingDisk);
for (int i = 0; i < Particles.Count; ++i)
Particles[i].Initialize();
}