protected override bool IsColliding(IGridCollider collider, out Collision collision) => throw new NotImplementedException();
static public bool IsShapeCollidingGrid <TShape>(CollisionDelegate <TShape, TopLeftRectangle> rectangleCollisionDelegate,
ICollider <TShape> shapeCollider, IGridCollider gridCollider, out Collision collision)
where TShape : IShape
{
IEnumerable <int[]> shapeGridBox = gridCollider.Grid.IndexIntersection(
(x, y) => rectangleCollisionDelegate(y, x, out _),
shapeCollider.Shape,
(i, j) => gridCollider.IsCollidableCase(shapeCollider, i, j));
foreach (int[] indexes in shapeGridBox)
{
int i = indexes[0];
int j = indexes[1];
var rectangle = new TopLeftRectangle(gridCollider.Grid.ToWorldPoint(i, j), gridCollider.Grid.Delta);
bool colliding = false;
for (int x = -1; x <= 1 && !colliding; x++)
{
for (int y = -1; y <= 1 && !colliding; y++)
{
if ((x + y) % 2 == 0)
{
continue;
}
if (!gridCollider.Grid.ContainsPoint(i + y, j + x) || !gridCollider.IsCollidableCase(shapeCollider, i + y, j + x))
{
continue;
}
var otherCase = new TopLeftRectangle(gridCollider.Grid.ToWorldPoint(i + y, j + x), gridCollider.Grid.Delta);
if (!rectangleCollisionDelegate(shapeCollider.Shape, otherCase, out _))
{
continue;
}
rectangle = new TopLeftRectangle
{
Position = (gridCollider.Grid.ToWorldPoint(i, j) + gridCollider.Grid.ToWorldPoint(i + y, j + x)) * 0.5f,
Size = gridCollider.Grid.Delta + gridCollider.Grid.Delta.Multiply(System.Math.Abs(x), System.Math.Abs(y))
};
colliding = true;
}
}
if (!rectangleCollisionDelegate(shapeCollider.Shape, rectangle, out Vector2 correction))
{
continue;
}
collision = new Collision
{
Sender = shapeCollider,
OtherCollider = gridCollider,
Correction = correction
};
return(true);
}
collision = new Collision();
return(false);
}
protected override bool IsColliding(IGridCollider collider, out Collision collision)
{
return(CollisionUtils.IsShapeCollidingGrid(IntersectionUtils.Collides, this, collider, out collision));
}
protected abstract bool IsColliding(IGridCollider collider, out Collision collision);
