public virtual void Update()
{
if (disabled)
{
return;
}
Constrain();
velocity = Vector2.Add(velocity, acceleration);
velocity = Vector2.Multiply(velocity, dampening);
velocity = Vectorizer.Limit(velocity, maxSpeed);
position = Vector2.Add(position, velocity);
}
/*
* Get a low resolution version of this grid for displaying
*/
private List <Vector2> CalculateLowResolution()
{
List <Vector2> positions = new List <Vector2>();
//Loop through low resolution version
for (int i = 0; i < lowResFieldSize.X; i++)
{
for (int j = 0; j < lowResFieldSize.Y; j++)
{
//Loop through the high resolution version, but only within the current low-res range
Vector2 start = new Vector2(i * lowResScale, j * lowResScale);
Vector2 end = new Vector2(
Math.Min(start.X + lowResScale, fieldSize.X),
Math.Min(start.Y + lowResScale, fieldSize.Y));
Vector2 sum = Vector2.Zero;
for (int w = (int)start.X; w < end.X; w++)
{
for (int h = (int)start.Y; h < end.Y; h++)
{
int index = ConvertCoordinatesToIndex(w, h);
sum = Vector2.Add(sum, field[index]);
}
}
Vector2 pos = ConvertLowResFieldToScreenPos(i, j);
sum = Vector2.Multiply(sum, drawDampening);
sum = Vectorizer.Limit(sum, lowResMaxForce);
positions.Add(Vector2.Add(pos, sum));
}
}
return(positions);
}