/// <summary>Construct the logo</summary>
public XenLogo(UpdateManager updateManager)
{
if (updateManager == null)
throw new ArgumentNullException();
content = new ContentLoader(Application.GetApplicationInstance().Services);
this.clearBackground = true;
//setup the system and drawer
this.particles = new Xen.Ex.Graphics.ParticleSystem(updateManager);
this.particleDrawer = new VelocityBillboardParticles2DElement(this.particles, false, 0.025f);
//align it...
this.particleDrawer.VerticalAlignment = Xen.Ex.Graphics2D.VerticalAlignment.Centre;
this.particleDrawer.HorizontalAlignment = Xen.Ex.Graphics2D.HorizontalAlignment.Centre;
//clear background is optional.
this.clear = new Xen.Graphics.Modifier.ClearBufferModifier(Microsoft.Xna.Framework.Graphics.ClearOptions.Target);
this.clear.ClearColour = new Microsoft.Xna.Framework.Color();
//load the data straight from the assembly.
this.particles.ParticleSystemData = content.Load<Xen.Ex.Graphics.Content.ParticleSystemData>("Logo");
this.particleTrigger = this.particles.GetTriggerByName("Fire");
updateManager.Add(this);
}
/// <summary>
/// Draw the logo
/// </summary>
public void Draw(DrawState state)
{
if (clearBackground)
this.clear.Draw(state);
if (EffectFinished)
{
if (this.particles != null)
this.particles.Dispose();
if (content != null)
this.content.Dispose();
this.particleDrawer = null;
this.particles = null;
this.particleTrigger = null;
this.content = null;
}
else
{
//x axis min/max start range for the particles to spawn in at
this.particles.GlobalValues[0] = -state.DrawTarget.Size.X / 2;
this.particles.GlobalValues[1] = 0;
//y axis min/max start range for the particles to spawn in at
this.particles.GlobalValues[2] = -state.DrawTarget.Size.Y / 2 - 200;
this.particles.GlobalValues[3] = +state.DrawTarget.Size.Y / 2 + 200;
drawingBegun = true;
if (particles.GetParticleCount(0) > 0)
particlesCreated = true;
this.particleDrawer.Draw(state);
}
}
/// <summary>
/// Dispose the effect resources early. The resources will automatically be disposed when the effect completes.
/// </summary>
public void Dispose()
{
if (this.particles != null)
this.particles.Dispose();
if (content != null)
this.content.Dispose();
this.particleDrawer = null;
this.particles = null;
this.particleTrigger = null;
this.content = null;
}