private bool CheckCanClimbStaircase(float horzMoveDir, float stepHeight, float stepDepth, out SurfaceContact staircaseContact)
{
staircaseContact = null;
if (frameContacts.Count == 0)
{
return(false);
}
var circleCollider = collider2D as CircleCollider2D;
var center = ( Vector2 )circleCollider.bounds.center;
var horzMoveDirVector = new Vector2(horzMoveDir, 0);
// Seek forward for obstacle to climb on.
var steepestContact = frameContacts.WithMin(c => Vector2.Dot(c.Normal, horzMoveDirVector));
if (Vector2.Dot(steepestContact.Normal, horzMoveDirVector) >= 0 || IsWalkable(steepestContact.Normal))
{
return(false);
}
staircaseContact = steepestContact;
// Cast up.
Debug.DrawRay(center, Vector2.up * stepHeight, Color.cyan);
var hit = Spatial.CircleCastFiltered(
center, circleCollider.radius, Vector2.up, stepHeight,
h => h.rigidbody == this.rigidbody2D,
contactsLayerMask
);
if (hit.collider != null)
{
Debug.DrawRay(hit.point, hit.normal * 0.1f, Color.red);
return(false);
}
center += Vector2.up * stepHeight;
// Cast forward.
Debug.DrawRay(center, horzMoveDirVector * stepDepth, Color.cyan);
hit = Spatial.CircleCastFiltered(
center, circleCollider.radius, horzMoveDirVector, stepDepth,
h => h.rigidbody == this.rigidbody2D,
contactsLayerMask
);
if (hit.collider != null)
{
Debug.DrawRay(hit.point, hit.normal * 0.1f, Color.red);
return(false);
}
return(true);
}
