public void Update(GameTime gameTime)
{
for (int i = 0; i < snowFlakes.Count; i++)
{
SnowFlake temp = new SnowFlake();
if (snowFlakes[i].x < 0 - snowFlake.Width)
{
temp.x = Game1.WINDOW_WIDTH + snowFlake.Width;
}
else
{
temp.x = snowFlakes[i].x - gameTime.ElapsedGameTime.Milliseconds * ((breeze * 0.75f) + snowFlakes[i].sway);
}
if (snowFlakes[i].y > Game1.WINDOW_HEIGHT + snowFlake.Height)
{
temp.y = 0 - snowFlake.Height;
}
else
{
temp.y = snowFlakes[i].y + gameTime.ElapsedGameTime.Milliseconds * (breeze * 1.125f);
}
temp.rotation = snowFlakes[i].rotation + gameTime.ElapsedGameTime.Milliseconds * (snowFlakes[i].rotationSpeed ? 0.005f : 0.00075f);
snowFlakes[i] = temp;
}
}
public void Initialize()
{
switch (snowDepth)
{
case SnowDepth.NONE:
breeze = 0.0f;
alpha = 1.0f;
scale = 0.0f;
break;
case SnowDepth.FURTHEST:
breeze = 0.025f;
alpha = 0.2f;
scale = 0.25f;
break;
case SnowDepth.FAR:
breeze = 0.04f;
alpha = 0.35f;
scale = 0.5f;
break;
case SnowDepth.NEAR:
breeze = 0.055f;
alpha = 0.5f;
scale = 1.0f;
break;
case SnowDepth.NEAREST:
breeze = 0.07f;
alpha = 0.65f;
scale = 1.5f;
break;
default:
alpha = 0.0f;
scale = 1.0f;
break;
}
snowFlakes = new List <SnowFlake>();
rand = new Random();
for (int i = 0; i < MAX_SNOWFLAKES; i++)
{
SnowFlake flake = new SnowFlake();
flake.x = (float)rand.Next(Game1.WINDOW_WIDTH);
flake.y = (float)rand.Next(Game1.WINDOW_HEIGHT);
flake.sway = (float)rand.Next(100) / 100;
flake.swayDir = rand.Next(1) == 1;
flake.rotation = 0.01f * (float)rand.Next(100);
flake.rotationSpeed = rand.Next(1) == 1;
snowFlakes.Add(flake);
}
}