public void Update(IMessage message)
{
IThreatMessage threatMessage = message as IThreatMessage;
if (message != null)
{
if (!GaveUp)
{
if (threatMessage.WindowWidth < X || threatMessage.WindowHeight < Y)
{
throw new ArgumentOutOfRangeException("Point can't be outside the window area!");
}
if (Math.Abs(threatMessage.X - X) <= threatMessage.ActionRadius && Math.Abs(threatMessage.Y - Y) <= threatMessage.ActionRadius)
{
GaveUp = true;
}
else
if (Math.Abs(threatMessage.X - X) <= ThreatRadius && Math.Abs(threatMessage.Y - Y) <= ThreatRadius)
{
RunAway(message);
}
}
}
}
private void RunAway(IThreatMessage message)
{
List <ShiftCoordinateDelegate> optimalShifts = new List <ShiftCoordinateDelegate>();
ShiftCoordinateDelegate shiftCoordinate;
if (Y - Step >= 0)
{
if (Math.Abs((Y - Step) - message.Y) > Math.Abs(Y - message.Y))
{
optimalShifts.Add(shiftCoordinate = (() => Y = Y - Step));
}
}
if (Y + Step <= message.WindowHeight)
{
if (Math.Abs((Y + Step) - message.Y) > Math.Abs(Y - message.Y))
{
optimalShifts.Add(shiftCoordinate = (() => Y = Y + Step));
}
}
if (X + Step <= message.WindowWidth)
{
if (Math.Abs((X + Step) - message.X) > Math.Abs(X - message.X))
{
optimalShifts.Add(shiftCoordinate = (() => X = X + Step));
}
}
if (X - Step >= 0)
{
shiftCoordinate = () => X = X - Step;
}
if (Math.Abs((X - Step) - message.X) > Math.Abs(X - message.X))
{
optimalShifts.Add(shiftCoordinate = (() => X = X - Step));
}
if (optimalShifts.Count != 0)
{
Random random = new Random();
int randomIndex = random.Next(optimalShifts.Count);
optimalShifts[randomIndex]();
}
}
private void RunAway(IMessage message)
{
IThreatMessage threatMessage = (IThreatMessage)message;
int moveX, moveY, preciseMoveX;
double tgA;
tgA = (threatMessage.Y - Y) / (threatMessage.X - X);
moveX = (int)Math.Sqrt((Step * Step) / (tgA * tgA + 1));
preciseMoveX = moveX;
moveY = (int)Math.Abs(tgA) * moveX;
if (threatMessage.X < X && threatMessage.Y > Y)
{
if (X + moveX < threatMessage.WindowWidth)
{
X = X + moveX;
}
else
{
moveX = threatMessage.WindowWidth - X;
X = threatMessage.WindowWidth;
moveY = (int)Math.Sqrt(Step * Step - moveX * moveX);
}
if (Y - moveY > 0)
{
Y = Y - moveY;
}
else
{
moveY = Y;
Y = 0;
moveX = (int)Math.Sqrt(Step * Step - moveY * moveY);
X = (X + (moveX - preciseMoveX) < threatMessage.WindowWidth) ? X + (moveX - preciseMoveX) : threatMessage.WindowWidth;
}
}
if (threatMessage.X > X && threatMessage.Y > Y)
{
if (X - moveX > 0)
{
X = X - moveX;
}
else
{
moveX = X;
X = 0;
moveY = (int)Math.Sqrt(Step * Step - moveX * moveX);
}
if (Y - moveY > 0)
{
Y = Y - moveY;
}
else
{
moveY = Y;
Y = 0;
moveX = (int)Math.Sqrt(Step * Step - moveY * moveY);
X = (X - (moveX - preciseMoveX) > 0) ? X - (moveX - preciseMoveX) : 0;
}
}
if (threatMessage.X > X && threatMessage.Y < Y)
{
if (X - moveX > 0)
{
X = X - moveX;
}
else
{
moveX = X;
X = 0;
moveY = (int)Math.Sqrt(Step * Step - moveX * moveX);
}
if (Y + moveY < threatMessage.WindowHeight)
{
Y = Y + moveY;
}
else
{
moveY = threatMessage.WindowHeight - Y;
Y = threatMessage.WindowHeight;
moveX = (int)Math.Sqrt(Step * Step - moveY * moveY);
X = (X - (moveX - preciseMoveX) > 0) ? X - (moveX - preciseMoveX) : 0;
}
}
if (threatMessage.X < X && threatMessage.Y < Y)
{
if (X + moveX < threatMessage.WindowWidth)
{
X = X + moveX;
}
else
{
X = threatMessage.WindowWidth;
moveX = threatMessage.WindowWidth - X;
moveY = (int)Math.Sqrt(Step * Step - moveX * moveX);
}
if (Y + moveY < threatMessage.WindowHeight)
{
Y = Y + moveY;
}
else
{
moveY = threatMessage.WindowHeight - Y;
Y = threatMessage.WindowHeight;
moveX = (int)Math.Sqrt(Step * Step - moveY * moveY);
X = (X + (moveX - preciseMoveX) > 0) ? X + (moveX - preciseMoveX) : 0;
}
}
}
