/// <summary>
/// Determines whether a
/// </summary>
/// <param name="x">The x coordinate.</param>
/// <param name="y">The y coordinate.</param>
/// <param name="lastTile">The last tile hit.</param>
/// <param name="trace">The trace line parameters.</param>
/// <param name="hitTile">The tile that was hit.</param>
/// <returns>
/// <c>true</c> if point is on a solid tile; otherwise, <c>false</c>.
/// </returns>
private bool IsPointOnSolidTile(int x, int y, GeometryTile lastTile, TraceQuery trace, out GeometryTile hitTile)
{
hitTile = null;
bool hit = false;
var map = _mapService.CurrentMap;
if (map == null)
{
return(hit);
}
var tileCol = (int)Math.Floor((double)x / map.GeometryTileWidth);
var tileRow = (int)Math.Floor((double)y / map.GeometryTileHeight);
if ((tileCol < 0) || (tileRow < 0))
{
return(hit);
}
for (var i = 0; i < map.CollisionLayers.Length; i++)
{
var layer = map.CollisionLayers[i];
// if the trace has specific a collision path, ignore layers that are not on the path
if (trace.CollisionPath != null)
{
if ((layer.CollisionPath != null) && (layer.CollisionPath != trace.CollisionPath))
{
continue;
}
}
var tile = layer.GetTile(tileCol, tileRow);
if (tile != null)
{
// solidity filters
if (
(tile.Definition.SolidType == SolidType.None) &&
((trace.Options & TraceLineOptions.SolidOnly) > TraceLineOptions.None))
{
continue;
}
if (
(tile.Definition.SolidType == SolidType.JumpThrough) &&
((trace.Options & TraceLineOptions.IgnoreJumpThrough) > TraceLineOptions.None))
{
continue;
}
var collisionMap = tile.Definition.CollisionMap;
if (collisionMap != null)
{
var localX = x - tile.WorldPosition.X;
var localY = y - tile.WorldPosition.Y;
if (!hit)
{
if (collisionMap[localX, localY])
{
hitTile = tile;
hit = true;
}
}
}
if (hit)
{
if (_varShowTracelines.Value)
{
if ((lastTile == null) || (lastTile.GridPosition.X != tile.GridPosition.X) || (lastTile.GridPosition.Y != tile.GridPosition.Y))
{
_renderService.HighlightGeometryTile(tileCol, tileRow, 0, 255, 0, 0);
}
}
}
}
}
return(hit);
}
