/// <summary>
/// Sample a bunch of points along a parabolic curve until you hit gnd. At that point, cut off the parabola
/// </summary>
///
/// <param name="p0">starting point of parabola</param>
/// <param name="v0">initial parabola velocity</param>
/// <param name="a">initial acceleration</param>
/// <param name="dist">distance between sample points</param>
/// <param name="points">number of sample points</param>
/// <param name="tnm">Vive Nav Mesh used to teleport</param>
/// <param name="outPts">List that will be populated by new points</param>
/// <param name="normal">normal of hit point</param>
///
/// <returns>true if the the parabole is at the end of the NavMesh</returns>
private static bool CalculateParabolicCurve(float3 p0, Vector3 v0, Vector3 a, float dist, int points, TeleportNavMesh tnm, int excludedLayer, out NativeArray <Translation> outPts, out float3 normal, out int lastPointIndex, out bool endOnTeleportableLayer)
{
// Init new list of points with p0 as the first point
outPts = new NativeArray <Translation>(points, Allocator.TempJob);
outPts[0] = new Translation {
Value = p0
};
float3 last = p0;
float t = 0;
for (int i = 0; i < points; i++)
{
t += dist / ParabolicCurveDeriv(v0, a, t).magnitude;
float3 next = ParabolicCurve(p0, v0, a, t);
if (TeleportNavMeshHelper.Linecast(last, next, out bool endOnNavmesh, out endOnTeleportableLayer, excludedLayer, out float3 castHit, out float3 norm, tnm))
{
outPts[i] = new Translation {
Value = castHit
};
normal = norm;
lastPointIndex = i;
return(endOnNavmesh);
}
private bool UserIsOnNavMesh(StepByStepComponent sbs, TeleportNavMesh tnm, VRRaycastOutputs raycastOutputs, LayerMask excludedLayers, out float3 newCameraRigPos, out bool endOnTeleportableLayer)
{
// We calculate the direction and the distance Vectors
var directionVector = raycastOutputs.RayVar.direction;
float distanceVector = _cameraRigTransform.localScale.y * sbs.DistanceStepByStep;
// Check if we hit a collider on the way. If it's the case, we reduce the distance.
if (Physics.Raycast(_vrCamTransform.position, directionVector, out RaycastHit hit, distanceVector, ~excludedLayers))
{
distanceVector = hit.distance - 0.1f;
}
// We multiply the direction vector by the distance to which the user should be going
directionVector *= distanceVector;
// We check the theoritic position for the cameraRig
newCameraRigPos = GetNewTheoriticPos(directionVector, true);
// We check the theoritic new user pos
float3 newCameraPos = GetNewTheoriticPos(directionVector, false);
// We calculate a vector down based on the new Camera Pos.
var downVectorDistance = Mathf.Abs(_vrCamTransform.localPosition.y + VRDF_Components.FloorOffset.transform.localPosition.y) + sbs.StepHeight;
var downVector = newCameraPos + (new float3(0.0f, -1.0f, 0.0f) * downVectorDistance);
if (sbs.DebugCalculationsRay)
{
var direction = new float3(directionVector.x, 0.0f, directionVector.z);
Debug.DrawRay(_vrCamTransform.position, direction, Color.red, 5.0f);
Debug.DrawRay(new float3(_vrCamTransform.position) + direction, downVectorDistance * new float3(0.0f, -1.0f, 0.0f), Color.blue, 5.0f);
}
// We calculate the linecast between the newUserPos and the downVector and check if it hits the NavMesh
TeleportNavMeshHelper.Linecast
(
newCameraPos,
downVector,
out bool endOnNavmesh,
out endOnTeleportableLayer,
excludedLayers,
out newCameraPos,
out _,
tnm
);
// We set the camera rig pos in y to the camera pos in y
newCameraRigPos.y = newCameraPos.y;
return(endOnNavmesh);
/// <summary>
/// We get the theoritic position for the CameraRig and the VRCamera based on the scaled direction (direction * distance)
/// </summary>
/// <param name="scaledDirection">The direction multiplied by the distance to go to</param>
/// <param name="isCheckingCameraRig">Whether the check is for the CameraRig or the VRCamera</param>
/// <returns>The new Theoritic position</returns>
float3 GetNewTheoriticPos(Vector3 scaledDirection, bool isCheckingCameraRig)
{
float3 origin = isCheckingCameraRig ? _cameraRigTransform.position : _vrCamTransform.position;
return(origin + new float3(scaledDirection.x, 0.0f, scaledDirection.z));
}
}
