/// <summary>
/// Constructor
/// </summary>
/// <param name="spriteBatch"></param>
/// <param name="particleTexture"></param>
/// <param name="position"></param>
public FireworkParticleSystem(SpriteBatch spriteBatch, Texture2D particleTexture, Vector2 position)
{
m_spriteBatch = spriteBatch;
m_particleTexture = particleTexture;
// Generate a color value
double randomValue = m_random.NextDouble();
if (randomValue <= 0.33) // Yellow to red
{
m_startColor = new Color(1.0f, 0.0f, 0.0f);
m_targetColor = new Color(1.0f, 1.0f, 0.0f);
}
else if (randomValue <= 0.66) // Green to yellow
{
m_startColor = new Color(0.0f, 1.0f, 0.0f);
m_targetColor = new Color(1.0f, 1.0f, 0.0f);
}
else // Black to Blue
{
m_startColor = new Color(1.0f, 1.0f, 0.0f);
m_targetColor = new Color(0.0f, 0.0f, 1.0f);
}
// Generate random direction & speed for new particle
float rndX = 1 * ((float)m_random.NextDouble() - 0.5f);
float rndY = -2f + 1 * ((float)-m_random.NextDouble());
// Create new particle at system's starting position
FireworkParticle part = new FireworkParticle(position, // With generated direction and speed
new Vector2(rndX * 45.0f, rndY * 90.0f), m_startColor, m_targetColor,
// And a random starting life
(float)(m_random.NextDouble() * 1.6)+0.9f);//m_random.Next(50));
// Create particle, and add it to the list of particles
m_particles.Add(part);
}
/// <summary>
/// Create Rain Explosion particle system particles based on source position
/// </summary>
/// <param name="position">Source position for first spawn point</param>
private void CreateExplosionRain(Vector2 position)
{
// Create all particles
for (int i = 0; i < MAX_NUMBER_OF_PARTICLES_RAIN; i++)
{
// Generate random direction & speed for new particle
float rndX = 2 * ((float)m_random.NextDouble() - 0.5f);
float rndY = 2 * ((float)m_random.NextDouble() - 0.5f);
// Create new particle at system's starting position
FireworkParticle part = new FireworkParticle(position,
// With generated direction and speed
new Vector2(rndX * 180.0f, rndY * 180.0f), m_startColor, m_targetColor,
// And a random starting life
(float)(m_random.NextDouble() * 1.5));
m_particles.Add(part);
}
}
/// <summary>
/// Create Circle Explosion particle system particles based on source position
/// </summary>
/// <param name="position">Source position for first spawn point</param>
private void CreateExplosionCircle(Vector2 position)
{
// Create all particles
for (int i = 0; i < MAX_NUMBER_OF_PARTICLES_CIRCLE; i++)
{
FireworkParticle newPart = new FireworkParticle(position,
// With generated direction and speed
new Vector2((float)Math.Cos(Math.PI * 2 * i / MAX_NUMBER_OF_PARTICLES_CIRCLE) * 175.0f,
(((float)Math.Sin(Math.PI * 2 * i / MAX_NUMBER_OF_PARTICLES_CIRCLE) / 2) - 0.75f) * 175.0f),
m_startColor, m_targetColor,
(float)(m_random.NextDouble() * 1.0));
m_particles.Add(newPart);
}
}