bool OnSelect(WorldCoordinateSelectEvent e, Action <Selection> continuation)
{
var hits = new List <Selection>(); // TODO: Get rid of the extra allocation and copying
_sceneGraph.RayIntersect(e.Origin, e.Direction, hits);
foreach (var hit in hits)
{
continuation(hit);
}
return(true);
// Find floor / ceiling hit (furthest point)
// Iterate all tiles on a straight-line path between origin and floor hit
// For each tile, yield if filled and if empty iterate contents performing hit checks.
/*
* float denominator = Vector3.Dot(Normal, e.Direction);
* if (Math.Abs(denominator) < 0.00001f)
* return;
*
* float t = Vector3.Dot(-e.Origin, Normal) / denominator;
* if (t < 0)
* return;
*
* Vector3 intersectionPoint = e.Origin + t * e.Direction;
* int x = (int)(intersectionPoint.X / _renderable.TileSize.X);
* int y = (int)(intersectionPoint.Y / _renderable.TileSize.Y);
*
* int highlightIndex = y * _map.Width + x;
* var underlayTile = _map.GetUnderlay(x, y);
* var overlayTile = _map.GetOverlay(x, y);
*
* e.RegisterHit(t, new MapTileHit(
* new Vector2(x, y),
* intersectionPoint,
* _renderable.GetWeakUnderlayReference(x, y),
* _renderable.GetWeakOverlayReference(x, y)));
*
* if (underlayTile != null) e.RegisterHit(t, underlayTile);
* if (overlayTile != null) e.RegisterHit(t, overlayTile);
* e.RegisterHit(t, this);
*
* var zone = _map.GetZone(x, y);
* if (zone != null)
* e.RegisterHit(t, zone);
*
* var chain = zone?.Chain;
* if (chain != null)
* {
* foreach (var zoneEvent in chain.Events)
* e.RegisterHit(t, zoneEvent);
* }
*
* if (_lastHighlightIndex != highlightIndex)
* {
* HighlightIndexChanged?.Invoke(this, highlightIndex);
* _lastHighlightIndex = highlightIndex;
* }
*/
}