// Update is called once per frame
void Update()
{
// Grab the current child input components
InteractiveObject[] childInputs = transform.GetComponentsInChildren <InteractiveObject>();
float closestDist = hoverDistance;
Vector3 closestPoint = new Vector3();
Vector3 closestNormal = new Vector3();
Vector3 interactionPoint = new Vector3();
Transform closestBone = null;
InteractiveObject targetInput = null;
// Count up the active hands
int activeHands = 0;
RigidHand activeHand = null;
foreach (var hand in hands)
{
if (hand.isActiveAndEnabled)
{
activeHands++;
activeHand = hand;
}
}
// We cycle through every finger-end collider in both hands and for all inputs to find the likely interaction target
foreach (InteractiveObject input in childInputs)
{
foreach (RigidHand hand in hands)
{
if (hand.isActiveAndEnabled)
{
foreach (RigidFinger finger in hand.fingers)
{
// Skip disabled fingers
if (!enableIndex && finger.name == "index" ||
!enableMiddle && finger.name == "middle" ||
!enableRing && finger.name == "ring" ||
!enablePinky && finger.name == "pinky" ||
!enableThumb && finger.name == "thumb")
{
continue;
}
if (input.Touchable)
{
Transform bone = finger.bones[3];
Vector3 point = input.GetNearestPoint(bone.position);
float dist = Vector3.Distance(point, bone.position);
// If bone->point lines up with the normal, we're behind the interaction surface and treat distance as 0
// This is limited to points directly behind the surface, and within a reasonable distance
Vector3 delta = point - bone.position;
float dot = Vector3.Dot(delta, input.InteractionNormal);
if (dot > 0 && Mathf.Abs(dot) > dist - 0.01f && dist < 0.5f * hoverDistance)
{
dist = 0.0f;
}
if (dist < closestDist)
{
closestBone = bone;
closestPoint = point;
closestNormal = input.InteractionNormal;
closestDist = dist;
targetInput = input;
}
}
}
}
}
}
if (targetInput)
{
// Hover selection logic <THERE CAN BE ONLY ONE>
// either there's no active, previous target...
if (!_lastHovered || !_lastHovered.gameObject.activeInHierarchy)
{
targetInput.HoverEnter();
_lastHovered = targetInput;
}
// ... or there was, but we switch away from it
else if (_lastHovered != targetInput)
{
_lastHovered.HoverExit();
targetInput.HoverEnter();
_lastHovered = targetInput;
}
// Otherwise, we're hovering over an input, so update it
else if (_lastHovered == targetInput)
{
_lastHovered.Hovering(closestBone.position);
}
// Get the actual interaction point
interactionPoint = targetInput.GetInteractionPoint(closestPoint, effectorDim);
if (displayTargetWidget && !ShouldHold())
{
displayTargetWidget.gameObject.SetActive(true);
displayTargetWidget.position = interactionPoint;
Vector3 normalTarget = interactionPoint + closestNormal;
displayTargetWidget.LookAt(normalTarget);
}
if (displayBoneWidget)
{
displayBoneWidget.gameObject.SetActive(true);
displayBoneWidget.position = closestBone.position;
}
}
else if (activeHands == 1)
{
// Hand-follow behaviour
// Only one hand to follow
// Dehover
if (_lastHovered)
{
_lastHovered.HoverExit();
_lastHovered = null;
}
// move to offset from index finger
if (displayTargetWidget && !ShouldHold())
{
displayTargetWidget.gameObject.SetActive(true);
Vector3 offset = new Vector3(0.0f, 0.0f, 0.18f);
// offset from index finger's end
displayTargetWidget.position = activeHand.fingers[1].bones[3].transform.position + offset;
// Reset normal direction
displayTargetWidget.rotation = safeZone.transform.rotation;
}
if (displayBoneWidget)
{
displayBoneWidget.gameObject.SetActive(false);
}
}
// No (or both) hands visible
else
{
// Dehover
if (_lastHovered)
{
_lastHovered.HoverExit();
_lastHovered = null;
}
// Hide the arm (not used)
RetractArm();
}
// Regardless of anything else, retract if touch is disabled
if (!_touchActive)
{
RetractArm();
}
// Capacitive sensor update
UpdateSensor();
// Trigger next menu
if (Input.GetButtonDown("Submit"))
{
_currentMenu.Next();
}
}