private bool CollidsWith(Animal sprite1, Animal sprite2)
{
try
{
Rect r1 = Bounds(sprite1);
Rect r2 = Bounds(sprite2);
if (r1.IntersectsWith(r2))
{
return true;
}
else
{
return false;
}
}
catch { }
return false; // we should not get here
}
private Rect Bounds(Animal sprite)
{
Point ptBottomRight = new Point(sprite.Position.X + sprite.RenderSize.Width, sprite.Position.Y + sprite.RenderSize.Height);
return new Rect(sprite.Position, ptBottomRight);
}
private void CheckForAnimalCollision(Animal animal)
{
foreach (Animal anim in MyCanvas.Children)
{
Point newPosition = new Point(animal.Position.X + animal.Velocity.X, animal.Position.Y + animal.Velocity.Y);
Point newVelocity = animal.Velocity;
if (anim.ColideCountDown == 0)
{
anim.Collided = false;
//anim.StatusColor = "#FF008000";
}
if (animal.ColideCountDown == 0)
{
animal.Collided = false;
//animal.StatusColor = "#FF008000";
}
if (CollidsWith(animal, anim) && anim != animal)
{
if (anim.Collided == false)
{
newVelocity.Y = -newVelocity.Y;
newVelocity.X = -newVelocity.X;
//anim.StatusColor = "#FFFF0000";
//animal.StatusColor = "#FFFF0000";
anim.SetCollideCountDown();
anim.Collided = true;
if (CageControlModel.CageStress >= 0)
{
CageControlModel.CageStress += (2 / anim.StressTolerance);
}
}
}
else
{
if (!CageControlModel.AnimalsAreFree)
{
//Wall detection
if (newPosition.X + animal.ActualWidth >= MyCanvas.ActualWidth)
{
newPosition.X = MyCanvas.ActualWidth - animal.ActualWidth;
newVelocity.X = -newVelocity.X;
}
else if (newPosition.X <= 0)
{
newPosition.X = 0;
newVelocity.X = -newVelocity.X;
}
if (newPosition.Y + animal.ActualHeight >= MyCanvas.ActualHeight)
{
newPosition.Y = MyCanvas.ActualHeight - animal.ActualHeight;
newVelocity.Y = -newVelocity.Y;
}
else if (newPosition.Y <= 0)
{
newPosition.Y = 0;
newVelocity.Y = -newVelocity.Y;
}
}
}
if (anim.ColideCountDown > 0)
{
anim.SubtractCountDown();
}
if (animal.ColideCountDown > 0)
{
animal.SubtractCountDown();
}
// Update the Animals's velocity and position.
animal.Velocity = newVelocity;
animal.Position = newPosition;
}
}