/// <summary>
/// Checks of the two positions have a clear line of sight on the given MapId.
/// </summary>
/// <param name="mapId">The <see cref="WCell.Constants.World.MapId"/> that corresponds to the desired map.</param>
/// <param name="pos1">The start position for the LOS check.</param>
/// <param name="pos2">The end position for the LOS check.</param>
/// <returns>True if the LOS check was successful.</returns>
public bool HasLOS(MapId mapId, Vector3 pos1, Vector3 pos2)
{
if (pos1.DistanceSquared(pos2) > _maxLOSRadiusSquared)
{
log.Warn(
"LOS request on points whose distance exceeds the maximum: Point 1: {0}, Point 2: {1}, Max Distance: {2}",
pos1, pos2, MaxLOSRadius);
return false;
}
Map map;
return (((!TryGetMap(mapId, out map)) || (map.HasLOS(pos1, pos2))));
}
public void Vector3DistanceSquaredTest()
{
var a = new Vector3(3.0f, 4.0f, 2.0f);
var b = new Vector3(6.0f, 8.0f, 4.0f);
var expectedResult = 29.0f;
var r = a.DistanceSquared(b);
Assert.Equal<float>(expectedResult, r);
}
public RayTraceHit RayTraceIntersection(Vector3 startSegment, Vector3 endSegment)
{
// Plane intersection
Vector3? southIntersection = Vector3.IntersectPointForSegmentAndPlane(startSegment, endSegment, this.Maximum, Vector3.XAxis);
Vector3? northIntersection = Vector3.IntersectPointForSegmentAndPlane(startSegment, endSegment, this.Minimum, Vector3.XAxis);
Vector3? topIntersection = Vector3.IntersectPointForSegmentAndPlane(startSegment, endSegment, this.Maximum, Vector3.YAxis);
Vector3? bottomIntersection = Vector3.IntersectPointForSegmentAndPlane(startSegment, endSegment, this.Minimum, Vector3.YAxis);
Vector3? westIntersection = Vector3.IntersectPointForSegmentAndPlane(startSegment, endSegment, this.Maximum, Vector3.ZAxis);
Vector3? eastIntersection = Vector3.IntersectPointForSegmentAndPlane(startSegment, endSegment, this.Minimum, Vector3.ZAxis);
// Check each intersection to be sure it lies within the other axis as well
if (northIntersection.HasValue && !this.IsVectorWithinYZ(northIntersection.Value))
{
northIntersection = null;
}
if (southIntersection.HasValue && !this.IsVectorWithinYZ(southIntersection.Value))
{
southIntersection = null;
}
if (topIntersection.HasValue && !this.IsVectorWithinXZ(topIntersection.Value))
{
topIntersection = null;
}
if (bottomIntersection.HasValue && !this.IsVectorWithinXZ(bottomIntersection.Value))
{
bottomIntersection = null;
}
if (westIntersection.HasValue && !this.IsVectorWithinXY(westIntersection.Value))
{
westIntersection = null;
}
if (eastIntersection.HasValue && !this.IsVectorWithinXY(eastIntersection.Value))
{
eastIntersection = null;
}
Vector3? rayHitPoint = null;
BlockFace faceHit = BlockFace.Self;
if (northIntersection != null)
{
rayHitPoint = northIntersection;
faceHit = BlockFace.North;
}
if (southIntersection != null && (rayHitPoint == null || startSegment.DistanceSquared(southIntersection.Value) < startSegment.DistanceSquared(rayHitPoint.Value)))
{
rayHitPoint = southIntersection;
faceHit = BlockFace.South;
}
if (topIntersection != null && (rayHitPoint == null || startSegment.DistanceSquared(topIntersection.Value) < startSegment.DistanceSquared(rayHitPoint.Value)))
{
rayHitPoint = topIntersection;
faceHit = BlockFace.Up;
}
if (bottomIntersection != null && (rayHitPoint == null || startSegment.DistanceSquared(bottomIntersection.Value) < startSegment.DistanceSquared(rayHitPoint.Value)))
{
rayHitPoint = bottomIntersection;
faceHit = BlockFace.Down;
}
if (westIntersection != null && (rayHitPoint == null || startSegment.DistanceSquared(westIntersection.Value) < startSegment.DistanceSquared(rayHitPoint.Value)))
{
rayHitPoint = westIntersection;
faceHit = BlockFace.West;
}
if (eastIntersection != null && (rayHitPoint == null || startSegment.DistanceSquared(eastIntersection.Value) < startSegment.DistanceSquared(rayHitPoint.Value)))
{
rayHitPoint = eastIntersection;
faceHit = BlockFace.East;
}
if (rayHitPoint != null)
return new RayTraceHit(rayHitPoint.Value, faceHit);
else
return null;
}
/// <summary>
/// Returns if the spell will hit the point when casted
/// </summary>
/// <param name="point">
/// Vector3 Target
/// </param>
/// <param name="castPosition">
/// Cast Position
/// </param>
/// <param name="extraWidth">
/// Extra Width
/// </param>
/// <returns>
/// Will Spell Hit
/// </returns>
public bool WillHit(Vector3 point, Vector3 castPosition, int extraWidth = 0)
{
switch (this.Type)
{
case SkillshotType.SkillshotCircle:
if (point.DistanceSquared(castPosition) < this.WidthSqr)
{
return true;
}
break;
case SkillshotType.SkillshotLine:
if (point.ToVector2().DistanceSquared(castPosition.ToVector2(), this.From.ToVector2(), true)
< Math.Pow(this.Width + extraWidth, 2))
{
return true;
}
break;
case SkillshotType.SkillshotCone:
var edge1 = (castPosition.ToVector2() - this.From.ToVector2()).Rotated(-this.Width / 2);
var edge2 = edge1.Rotated(this.Width);
var v = point.ToVector2() - this.From.ToVector2();
if (point.DistanceSquared(this.From) < this.RangeSqr && edge1.CrossProduct(v) > 0
&& v.CrossProduct(edge2) > 0)
{
return true;
}
break;
}
return false;
}
