//updating missile explosion effects with smoke trial
public void MissileFiredExplosions(Vector3 position, Vector3 velocity, BBN_Game.Objects.StaticObject parent)
{
//create new projectile every time a missile is fired
projectiles.Add(new Projectile(explosionParticles,
explosionSmokeParticles,
projectileTrailParticles, position, velocity, parent));
}
/// <summary>
/// Updates the projectile.
/// </summary>
public bool Update(GameTime gameTime, Vector3 pos, Vector3 vel, float dist, BBN_Game.Objects.StaticObject parent)
{
if (parent.Equals(Parent))
{
float elapsedTime = (float)gameTime.ElapsedGameTime.TotalSeconds;
// Simple projectile physics.
//position += velocity * elapsedTime;
//velocity.Y -= elapsedTime * gravity;
//age += elapsedTime;
position = pos;
velocity = vel;
// Update the particle emitter, which will create our particle trail.
trailEmitter.Update(gameTime, position);
// If enough time has passed, explode! Note how we pass our velocity
// in to the AddParticle method: this lets the explosion be influenced
// by the speed and direction of the projectile which created it.
if (dist <= 0) //age > projectileLifespan
{
// for (int i = 0; i < numExplosionParticles; i++)
// explosionParticles.AddParticle(position, velocity);
// //for (int i = 0; i < numExplosionSmokeParticles; i++)
// // explosionSmokeParticles.AddParticle(position, velocity);
return(false);
}
}
return(true);
}
/// <summary>
/// Constructs a new projectile.
/// </summary>
public Projectile(ParticleSystem explosionParticles,
ParticleSystem explosionSmokeParticles,
ParticleSystem projectileTrailParticles, Vector3 pos, Vector3 vel, BBN_Game.Objects.StaticObject parent)
{
this.explosionParticles = explosionParticles;
this.explosionSmokeParticles = explosionSmokeParticles;
position = pos;
velocity = vel;
Parent = parent;
//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);
}
/// <summary>
/// Constructs a new projectile.
/// </summary>
public Projectile(ParticleSystem explosionParticles,
ParticleSystem explosionSmokeParticles,
ParticleSystem projectileTrailParticles, Vector3 pos, Vector3 vel, BBN_Game.Objects.StaticObject parent)
{
this.explosionParticles = explosionParticles;
this.explosionSmokeParticles = explosionSmokeParticles;
position = pos;
velocity = vel;
Parent = parent;
//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);
}
//updates the list of active projectiles
public void UpdateProjectiles(GameTime gameTime, Vector3 pos, Vector3 vel, float dist, BBN_Game.Objects.StaticObject parent)
{
int i = 0;
while (i < projectiles.Count)
{
if (!projectiles[i].Update(gameTime, pos, vel, dist, parent))
{
projectiles.RemoveAt(i);//remove projectiles at end of their life
}
else
{
i++;//advance to next projectile
}
}
}
