/// <summary>
/// Updates all pixels next to a pixel that has been hit
/// </summary>
/// <param name="x">x position in pixels array</param>
/// <param name="y">y position in pixels array</param>
/// <param name="hit">Hit object originally passed to the pixel</param>
public void UpdateNearby(Index2D index, Hit hit)
{
// The damage will decrease with the square of the distance from the
// origin. This may be changed later to be linear.
for (int i = -(int)hit.Radius; i <= hit.Radius; i++)
{
for (int j = -(int)hit.Radius; j <= hit.Radius; j++)
{
if (i * i + j * j == 0)
{
continue;
}
var pixel = pixels.GetElementOrNull(index.x + i, index.y + j);
var modHit = new Hit(hit, damage: hit.Damage * ((1.0f / (i * i + j * j))));
if (pixel != null)
{
pixel.SendMessage(Const.TakeDamageCollateral, modHit);
}
}
}
}