/// <summary>
/// Create a new particle effect, based on parameters stored in ParticleEffectData.xml
/// </summary>
/// <param name="effectKey">string identifier used to fetch parameters. Must match Name attribute in XML</param>
public ParticleEffect(string effectKey)
{
if (Data.ContainsKey(effectKey))
{
ParticleEffectData data = Data[effectKey];
_generators = new ParticleGenerator[data.ParticleGenerators.Length];
for (int i = 0; i < _generators.Length; i++)
{
_generators[i] = new ParticleGenerator(data.ParticleGenerators[i]);
}
}
else
{
_generators = new ParticleGenerator[1];
_generators[0] = new ParticleGenerator(effectKey);
}
IntensityFactor = 1.0f;
}
/// <summary>
/// Create a new particle effect, based on parameters stored in ParticleEffectData.xml
/// </summary>
/// <param name="effectKey">string identifier used to fetch parameters. Must match Name attribute in XML</param>
public ParticleEffect(string effectKey)
{
_particleEffectData = Data[effectKey];
_particleSpeed = _particleEffectData.Speed;
_speedVariance = _particleEffectData.SpeedVariance;
_particleDecelerationFactor = _particleEffectData.DecelerationFactor;
_particleTexture = (_particleEffectData.UniqueParticle == null) ? particleTexture : _particleEffectData.UniqueParticle;
_textureCenter = new Vector2(_particleTexture.Width / 2.0f, particleTexture.Height / 2.0f);
_particleScale = _particleEffectData.StartScale / _particleTexture.Width;
_scaleRate =
(((_particleEffectData.EndScale - _particleEffectData.StartScale) / _particleTexture.Width)
/ ((float)_particleEffectData.ParticleLife.TotalSeconds));
_scaleVariance = _particleEffectData.ScaleVariance;
_arc = _particleEffectData.SpawnArc;
_particleLife = _particleEffectData.ParticleLife;
_particleLifeVariance = _particleEffectData.ParticleLifeVariance;
_particleRotationSpeed = MathHelper.ToRadians(
_particleEffectData.ParticleRotation / (float)_particleEffectData.ParticleLife.TotalSeconds);
if (_particleEffectData.Reversed)
{
_startColor = _particleEffectData.EndColor;
_endColor = _particleEffectData.StartColor;
Reversed = true;
}
else
{
_startColor = _particleEffectData.StartColor;
_endColor = _particleEffectData.EndColor;
Reversed = false;
}
_spawnRate = _particleEffectData.SpawnRate;
_tillNextParticleSpawn = TimeSpan.FromSeconds(1.0f / (float)_spawnRate);
_particles = new List<Particle>();
IntensityFactor = 1.0f;
}