/// <summary>
/// Adds or subtracts from the given number towards the target, but will never pass it. First aligns number to the nearest integer
/// </summary>
/// <param name="number"></param>
/// <param name="target"></param>
/// <param name="amount"></param>
/// <returns></returns>
public static float Approach(this float number, float target, int amount)
{
double decimalAmount = 0;
if (number > target)
{
decimalAmount = number - Math.Floor(number);
}
else if (number < target)
{
decimalAmount = Math.Ceiling(number) - number;
}
if (decimalAmount == 0)
{
decimalAmount = 1;
}
return(number.Approach(target, decimalAmount));
}
private static void TryCorrectPosition(Rectangle tryPosition, TFirst moveableObject, ICollidable collidable, IMovingCollidable movingCollidable, bool correctX, bool correctY, bool correctPastOriginal = false)
{
float newX = tryPosition.Center.X;
float newY = tryPosition.Center.Y;
float deltaX = 0, deltaY = 0;
if (correctPastOriginal)
{
newX = newX.Approach(moveableObject.Motion.FrameStartPosition.Center.X, 1);
newY = newY.Approach(moveableObject.Motion.FrameStartPosition.Center.Y, 1);
deltaX = (newX - moveableObject.Motion.FrameStartPosition.Center.X).Unit();
deltaY = (newY - moveableObject.Motion.FrameStartPosition.Center.Y).Unit();
if (deltaX == 0 && deltaY == 0)
{
if (movingCollidable == null)
{
deltaY = -1;
}
else
{
deltaY = (newY - movingCollidable.Position.Center.Y).Unit();
}
}
}
while (collidable.DetectCollision(tryPosition, true))
{
float newX2 = newX, newY2 = newY;
if (correctPastOriginal)
{
newX2 = newX + deltaX;
newY2 = newY + deltaY;
}
else
{
if (correctX)
{
newX2 = newX.Approach(moveableObject.Motion.FrameStartPosition.Center.X, 1);
}
if (correctY)
{
newY2 = newY.Approach(moveableObject.Motion.FrameStartPosition.Center.Y, 1);
}
}
if (newX2 == newX && newY2 == newY)
{
newX = newX2;
newY = newY2;
break;
}
else
{
newX = newX2;
newY = newY2;
}
tryPosition.Center = new Vector2(newX, newY);
}
}
/// <summary>
/// Adds or subtracts from the given number towards the target, but will never pass it.
/// </summary>
/// <param name="number"></param>
/// <param name="target"></param>
/// <param name="amount"></param>
/// <returns></returns>
public static float Approach(this float number, float target, double amount)
{
return(number.Approach(target, (float)amount));
}
