public void PenetrationVectorSlightlyOverlappingOffAxisTest()
{
Point2 pos1 = new Point2(2, 2.5f);
Point2 pos2 = new Point2(2, 1);
IShapeF shape1 = new CircleF(pos1, 2.0f);
IShapeF shape2 = new CircleF(pos2, 2.0f);
var actor1 = new BasicActor()
{
Position = pos1,
Bounds = shape1
};
var actor2 = new BasicWall()
{
Position = pos2,
Bounds = shape2
};
Assert.True(shape1.Intersects(shape2));
collisionComponent.Insert(actor1);
collisionComponent.Insert(actor2);
collisionComponent.Update(_gameTime);
// Actor should have moved up because the distance is shorter.
Assert.True(actor1.Position.Y > actor2.Position.Y);
// The circle centers should be about 4 units away after moving
Assert.True(Math.Abs(actor1.Position.Y - 5.0f) < float.Epsilon);
Assert.True(Math.Abs(actor1.Position.X - 2.0f) < float.Epsilon);
}
public void PenetrationVectorRectangleRectangleOffAxisTest()
{
Point2 pos1 = new Point2(4, 2);
Point2 pos2 = new Point2(3, 1);
IShapeF shape1 = new RectangleF(pos1, new Size2(4, 2));
IShapeF shape2 = new RectangleF(pos2, new Size2(4, 2));
var actor1 = new BasicActor()
{
Position = pos1,
Bounds = shape1
};
var actor2 = new BasicWall()
{
Position = pos2,
Bounds = shape2
};
Assert.True(shape1.Intersects(shape2));
collisionComponent.Insert(actor1);
collisionComponent.Insert(actor2);
collisionComponent.Update(_gameTime);
Assert.True(Math.Abs(actor1.Position.X - 4.0f) < float.Epsilon);
Assert.True(Math.Abs(actor1.Position.Y - 3.0f) < float.Epsilon);
}
public void PenetrationVectorSameCircleTest()
{
Point2 pos1 = Point2.Zero;
Point2 pos2 = Point2.Zero;
IShapeF shape1 = new CircleF(pos1, 2.0f);
IShapeF shape2 = new CircleF(pos2, 2.0f);
var actor1 = new BasicActor()
{
Position = pos1,
Bounds = shape1
};
var actor2 = new BasicWall()
{
Position = pos2,
Bounds = shape2
};
Assert.True(shape1.Intersects(shape2));
collisionComponent.Insert(actor1);
collisionComponent.Insert(actor2);
collisionComponent.Update(_gameTime);
Assert.True(Math.Abs(actor1.Position.Y - -4f) < float.Epsilon);
}
public void PenetrationVectorCircleContainedInRectangleTest()
{
Point2 pos1 = new Point2(0, 0);
Point2 pos2 = new Point2(-2, -1);
IShapeF shape1 = new CircleF(pos1, 1.0f);
IShapeF shape2 = new RectangleF(pos2, new Size2(4, 2));
var actor1 = new BasicActor()
{
Position = pos1,
Bounds = shape1
};
var actor2 = new BasicWall()
{
Position = pos2,
Bounds = shape2
};
Assert.True(shape1.Intersects(shape2));
collisionComponent.Insert(actor1);
collisionComponent.Insert(actor2);
collisionComponent.Update(_gameTime);
Assert.True(Math.Abs(actor1.Position.X - 0.0f) < float.Epsilon);
Assert.True(Math.Abs(actor1.Position.Y - -2.0f) < float.Epsilon);
}
