/// <summary>
/// Generates the points for the cast.
/// </summary>
protected virtual void GeneratePoints()
{
Ray ray = new Ray(origin.transform.position, origin.transform.forward);
RaycastHit hitData;
bool hasCollided = PhysicsCast.Raycast(physicsCast, ray, out hitData, maximumLength, Physics.IgnoreRaycastLayer);
TargetHit = (hasCollided ? hitData : (RaycastHit?)null);
points[0] = origin.transform.position;
points[1] = (hasCollided ? hitData.point : origin.transform.position + origin.transform.forward * maximumLength);
}
/// <inheritdoc />
public override void CastPoints()
{
if (!isActiveAndEnabled)
{
return;
}
Ray ray = new Ray(transform.position, transform.forward);
RaycastHit hitData;
bool hasCollided = PhysicsCast.Raycast(physicsCast, ray, out hitData, maximumLength, Physics.IgnoreRaycastLayer);
TargetHit = (hasCollided ? hitData : (RaycastHit?)null);
points[0] = transform.position;
points[1] = (hasCollided ? hitData.point : transform.position + transform.forward * maximumLength);
ResultsChanged?.Invoke(eventData.Set(TargetHit, Points));
}
/// <summary>
/// Checks for collisions along the parabolic line segments and generates the final points.
/// </summary>
/// <param name="forward">The forward direction to use for the checks.</param>
/// <param name="down">The downwards direction to use for the checks.</param>
protected virtual void GeneratePointsIncludingSegments(Vector3 forward, Vector3 down)
{
GeneratePoints(forward, down);
collisionCheckFrequency = Mathf.Clamp(collisionCheckFrequency, 0, segmentCount);
int step = segmentCount / (collisionCheckFrequency > 0 ? collisionCheckFrequency : 1);
for (int index = 0; index < segmentCount - step; index += step)
{
Vector3 currentPoint = points[index];
Vector3 nextPoint = index + step < points.Count ? points[index + step] : points[points.Count - 1];
Vector3 nextPointDirection = (nextPoint - currentPoint).normalized;
float nextPointDistance = Vector3.Distance(currentPoint, nextPoint);
Ray pointsRay = new Ray(currentPoint, nextPointDirection);
RaycastHit pointsHitData;
if (!PhysicsCast.Raycast(physicsCast, pointsRay, out pointsHitData, nextPointDistance, Physics.IgnoreRaycastLayer))
{
continue;
}
Vector3 collisionPoint = pointsRay.GetPoint(pointsHitData.distance);
Ray downwardRay = new Ray(collisionPoint + Vector3.up * 0.01f, Vector3.down);
RaycastHit downwardHitData;
if (!PhysicsCast.Raycast(physicsCast, downwardRay, out downwardHitData, float.PositiveInfinity, Physics.IgnoreRaycastLayer))
{
continue;
}
TargetHit = downwardHitData;
Vector3 newDownPosition = downwardRay.GetPoint(downwardHitData.distance);
Vector3 newJointPosition = newDownPosition.y < forward.y ? new Vector3(newDownPosition.x, forward.y, newDownPosition.z) : forward;
GeneratePoints(newJointPosition, newDownPosition);
break;
}
ResultsChanged?.Invoke(eventData.Set(TargetHit, Points));
}
/// <summary>
/// Projects a straight line downwards from the provided point.
/// </summary>
/// <param name="downwardOrigin">The origin of the projected line.</param>
/// <returns>The collision point or the point being the furthest away on the cast line if nothing is hit.</returns>
protected virtual Vector3 ProjectDown(Vector3 downwardOrigin)
{
Vector3 point = Vector3.zero;
Ray ray = new Ray(downwardOrigin, Vector3.down);
RaycastHit hitData;
bool downRayHit = PhysicsCast.Raycast(physicsCast, ray, out hitData, maximumLength.y, Physics.IgnoreRaycastLayer);
if (!downRayHit || (TargetHit?.collider != null && TargetHit.Value.collider != hitData.collider))
{
TargetHit = null;
point = ray.GetPoint(0f);
}
if (downRayHit)
{
point = ray.GetPoint(hitData.distance);
TargetHit = hitData;
}
return(point);
}
/// <summary>
/// Projects a straight line forward from the current origin.
/// </summary>
/// <returns>The collision point or the point being the furthest away on the cast line if nothing is hit.</returns>
protected virtual Vector3 ProjectForward()
{
float rotation = Vector3.Dot(Vector3.up, origin.transform.forward.normalized);
float length = maximumLength.x;
if ((rotation * 100f) > heightLimitAngle)
{
float controllerRotationOffset = 1f - (rotation - heightLimitAngle / 100f);
length = maximumLength.x * controllerRotationOffset * controllerRotationOffset;
}
Ray ray = new Ray(origin.transform.position, origin.transform.forward);
RaycastHit hitData;
bool hasCollided = PhysicsCast.Raycast(physicsCast, ray, out hitData, length, Physics.IgnoreRaycastLayer);
// Adjust the cast length if something is blocking it.
if (hasCollided && hitData.distance < length)
{
length = hitData.distance;
}
// Use an offset to move the point back and up a bit to prevent the cast clipping at the collision point.
return(ray.GetPoint(length - ADJUSTMENT_OFFSET) + (Vector3.up * ADJUSTMENT_OFFSET));
}
