void AddFirework(double x, double y)
{
for (int i = 0; i < FIREWORK_NUM; i++)
{
double size = SIZE_MIN + (SIZE_MAX - SIZE_MIN) * Defaults.RandomGenerator.NextDouble();
byte red = (byte)(128 + Defaults.RandomGenerator.Next(128));
byte green;
byte blue;
if (_shadeOfWhite)
{
green = red;
blue = red;
}
else
{
green = (byte)(128 + Defaults.RandomGenerator.Next(128));
blue = (byte)(128 + Defaults.RandomGenerator.Next(128));
}
double xVelocity = X_VELOCITY - 2 * X_VELOCITY * Defaults.RandomGenerator.NextDouble();
double yVelocity = -Y_VELOCITY *Defaults.RandomGenerator.NextDouble();
MagicDot dot = new MagicDot(red, green, blue, size);
dot.X = x;
dot.Y = y;
dot.XVelocity = xVelocity;
dot.YVelocity = yVelocity;
dot.Gravity = GRAVITY;
dot.RunFirework();
_fireworks.Add(dot);
LayoutRoot.Children.Add(dot);
}
}
void MoveFirework()
{
for (int i = _fireworks.Count - 1; i >= 0; i--)
{
MagicDot dot = _fireworks[i];
dot.RunFirework();
if (dot.Opacity <= 0.1)
{
LayoutRoot.Children.Remove(dot);
_fireworks.Remove(dot);
}
}
}