/// <summary>
/// Detects collisions in the XY plane.
/// </summary>
/// <param name="performResponse">Whether to fix any collisions. Defaults to true.</param>
/// <returns>A CollisionType indicating whether a collision happened.</returns>
public virtual CollisionType DoXYCollisionDetection(bool performResponse = true)
{
if (this.CheckFlags(ActorFlags.NoInteraction)) // Don't do collision detection if NoInteraction is set.
{
return(CollisionType.None);
}
Vector3k deltaDist = Vector3k.Zero;
Actor firstCollision = null;
bool spcColRespStopMove = false;
foreach (Actor act in Core.Ticker.Thinkers) // Iterate through all actors.
{
if (act == null || act == this) // Skip if the actor is null or act refers to itself
{
continue;
}
if (act.CheckFlags(ActorFlags.NoBlockmap) || act.CheckFlags(ActorFlags.NoInteraction)) // Skip the actor if it has NoBlockmap or NoInteraction
{
continue;
}
Vector3k distXY = bCylinder.IntersectionDistXY(act.bCylinder);
if (distXY.LengthSquared < FixedMath.Square(this.Radius + act.Radius))
{
if (performResponse)
{
deltaDist += (((act.Radius + this.Radius) / distXY.Length) - Accum.One) * distXY;
}
if (firstCollision == null)
{
firstCollision = act;
}
if (SpecialCollisionResponseXY(performResponse, act, act == firstCollision))
{
spcColRespStopMove = true;
}
}
}
if (performResponse)
{
bCylinder.Position += deltaDist;
}
if (spcColRespStopMove)
{
return(CollisionType.SpcColResp_StopMovement);
}
else if (firstCollision != null)
{
return(CollisionType.Collision);
}
else
{
return(CollisionType.None);
}
}
/// <summary>
/// Checks for intersection with a bounding cylinder in the XY axes.
/// </summary>
/// <param name="b">The bounding cylinder to check for intersection with.</param>
/// <returns>Returns a boolean indicating whether an intersection happened.</returns>
public bool IntersectsXY(BoundingCylinder b)
{
return(FixedMath.Abs(IntersectionDistXY(b).LengthSquared) < FixedMath.Square(this.Radius + b.Radius));
}
