// FixedUpdate is called once per phsyics frame
private void FixedUpdate()
{
// If a raycast is requested (button one on Oculus, constant for mouse)
if (RaycastRequested())
{
// Perform the raycast and store the result
bool raycastHit = RaycastingMethod(out hit, maxRaycastDistance, layerMask);
// If the raycast hit,
if (raycastHit)
{
// See if the hit object has changed
if (hit.collider.gameObject != curObj)
{
// Clean up hover, press events on previous object
OnHoverEnd();
OnPressEnd();
// Update object
curObj = hit.collider.gameObject;
// Find the event manager to trigger on the new object
curEvent = FindRaycastTrigger(hit);
}
// Get user press state
Pressing = PressCondition();
// If the user is not pressing, we are hovering over the object
Hovering = !Pressing;
}
else
{
// If we didn't hit a valid target, clean up hover, press events
Hovering = false;
Pressing = false;
curEvent = null;
curObj = null;
}
// TODO: If you hover over a different raycastable object immediately, this will not end the hover on the old object
// This needs to track if the raycastHit object changes
}
else
{
Pressing = false;
Hovering = false;
}
}
/// <summary> If raycastButton is pressed, attempt to raycast to valid target and activate valid raycastTrigger events on the target </summary>
private void TryRaycastHit()
{
// If the user enables "raycast mode" by VR controller or by mouse
bool raycastActive = OVRInput.Get(raycastButton, raycastController) || (mouseMode && Input.GetMouseButton(0));
if (raycastActive)
{
// Resolve raycast hit info for VR or mouse controller
RaycastHit hit;
bool rayHit = false;
if (mouseMode)
{
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
rayHit = Physics.Raycast(ray, out hit, 10f, layerMask);
}
else
{
RequestHandRenderState(true); // Enable raycasting hand
Vector3 globalForward = transform.TransformDirection(relativeForward); // Find the direction of the raycast
rayHit = Physics.Raycast(transform.position, globalForward, out hit, 10f, layerMask);
}
if (rayHit)
{ // If our raycast hits a raycastable target,
// Are we raycasting to a new object, and does that object have any valid raycasting events?
valid = ResolveCurrentTarget(hit);
if (valid)
{ // If we have a valid target to hit,
hitTriggered = false;
holdTriggered = false;
endTriggered = false;
// Don't allow calling more than one hit, hold, or end event in a single frame
DipointLinerendSetPositions(transform.position, hit.point); // Visualize our raycast as long as we have a valid target
ResolveClickEvents(hit); // Call events according to trigger button system
ResolveProximityEvents(hit); // Call events according to proximity distance activation system
// If we actually activated any triggers this frame, change hand asthetics to reflect it
if (holdTriggered)
{
RequestNewState(StateCode.HOLD);
}
else if (hitTriggered)
{
RequestNewState(StateCode.HIT);
}
else if (endTriggered)
{
RequestNewState(StateCode.END);
}
else
{
RequestNewState(StateCode.NULL);
} // Othwerwise we are inactive
}
else
{
DontDrawLinerend();
} // If we don't have a valid target, don't draw the linerender
}
else
{
DontDrawLinerend();
} // If our raycast did NOT hit a raycastable target, don't draw the linerender
}
else
{ // If we aren't in "raycast mode"
RequestHandRenderState(false); // Return to default hand
// Turn off controller vibration & don't draw the raycast
RequestNewState(StateCode.NULL);
DontDrawLinerend();
if (touched)
{
touched = false;
} // Allow proximity touches again
if (clicked)
{
clicked = false;
} // Allow trigger button activation again
}
#region Local_Functions
// Are we raycasting to a new object, and does that object have any valid raycasting events?
bool ResolveCurrentTarget(RaycastHit hit)
{
int newID = hit.collider.gameObject.GetInstanceID();
if (newID != activeObjectID)
{ // If we have found a new object,
RaycastEventManager newTriggerManager = hit.collider.GetComponentInParent <RaycastEventManager>();
if (newTriggerManager != null)
{ // If it has a valid trigger,
// Find whether or not there are valid hit, hold, and end events based on handedness
if (rightHand)
{
validHitEvent = (newTriggerManager.rightTrigger.OnPress.GetPersistentEventCount() > 0) ? true : false;
validHoldEvent = (newTriggerManager.rightTrigger.OnHoldPress.GetPersistentEventCount() > 0) ? true : false;
validEndEvent = (newTriggerManager.rightTrigger.OnEndPress.GetPersistentEventCount() > 0) ? true : false;
}
else
{
validHitEvent = (newTriggerManager.leftTrigger.OnPress.GetPersistentEventCount() > 0) ? true : false;
validHoldEvent = (newTriggerManager.leftTrigger.OnHoldPress.GetPersistentEventCount() > 0) ? true : false;
validEndEvent = (newTriggerManager.leftTrigger.OnEndPress.GetPersistentEventCount() > 0) ? true : false;
}
if (validHitEvent || validHoldEvent || validEndEvent)
{ // If we have found some active event to activate, save it and mark this target as valid
activeTriggerManager = newTriggerManager;
activeObjectID = newID;
return(true);
}
}
// If the object doesn't have a RaycastTriggerManager, then we don't have a valid object
return(false);
}
// Otherwise we have a previously valid object
else
{
return(false);
}
}
// Enable/disable static raycasting hand depending on raycast state
void RequestHandRenderState(bool rURaycasting)
{
if (!mouseMode)
{
if (rURaycasting)
{ // If we're trying to use raycasting hands,
if (defaultHandObject.activeSelf || !staticIndexRenderer.enabled)
{ // If our hand object isn't in raycasting mode yet,
defaultHandObject.SetActive(false); // Disable the default Oculus hand
staticIndexRenderer.enabled = true; // Enable the static hand mesh
}
}
else
{
if (!defaultHandObject.activeSelf || staticIndexRenderer.enabled)
{ // If our hand object is still in raycasting mode,
defaultHandObject.SetActive(true); // Enable default Oculus hand
staticIndexRenderer.enabled = false; // Disable static hand mesh
}
}
}
}
// Functionality for invoking trigger events with triggerButton
void ResolveClickEvents(RaycastHit hit)
{
bool buttonPressed = false;
if (mouseMode)
{
buttonPressed = true;
}
else if (OVRInput.Get(triggerButton, raycastController))
{
buttonPressed = true;
}
if (buttonPressed)
{ // If we are holding down the relevant button
if (!clicked)
{ // FIRST CLICK CASE: We have just pressed the index trigger all the way down on our controller for the first time recently.
AttemptHitEvent(hit);
clicked = true;
}
// We should attempt to call a hit event every frame that the button is held
AttemptHoldEvent(hit);
}
else
{ // If we are not holding down the trigger
if (clicked)
{ // If we were just clicking, and now we aren't, reset clicked and call the onEndEvent
AttemptEndEvent(hit);
clicked = false;
}
}
}
// Functionality for invoking trigger events for close-proximity raycast hits
void ResolveProximityEvents(RaycastHit hit)
{
if (hit.distance < minHitDist)
{ // If we are within close enough to activate our trigger,
if (!touched)
{ // & if we didn't just activate that trigger by being within distance already,
touched = true; // Don't reactivate any triggers until we move far enough away.
AttemptHitEvent(hit);
}
else
{
AttemptHoldEvent(hit);
} // If we're still close, but have already trigegred the hit event, then we're holding
}
else if (hit.distance < hysteresisDist)
{ // If we are still within hysteresis range, don't allow further touches but continue calling hold events
if (touched)
{
AttemptHoldEvent(hit);
} // If we've already hit the object, then we can hold it
}
else
{ // If we are far enough away, then we are done with our proximity touch/hold
if (touched)
{
touched = false; // Allow proximity touches again
AttemptEndEvent(hit);
}
}
}
// Invoke valid hit, hold, or end events
void AttemptHitEvent(RaycastHit hit)
{
if (validHitEvent)
{ // If the active object has a valid hit or hold event, activate the trigger and produce active aesthetics
if (!hitTriggered)
{ // If we haven't already activated it, do that
if (rightHand)
{
activeTriggerManager.rightTrigger.Press(hit);
}
else
{
activeTriggerManager.leftTrigger.Press(hit);
}
hitTriggered = true;
}
}
}
void AttemptHoldEvent(RaycastHit hit)
{
if (validHoldEvent)
{ // If we have an active hold event,
if (!holdTriggered)
{ // If we haven't already activated it this frame,
if (rightHand)
{
activeTriggerManager.rightTrigger.HoldPress(hit);
}
else
{
activeTriggerManager.leftTrigger.HoldPress(hit);
}
holdTriggered = true;
}
}
}
void AttemptEndEvent(RaycastHit hit)
{
if (validEndEvent)
{
if (!endTriggered)
{
if (rightHand)
{
activeTriggerManager.rightTrigger.EndPress(hit);
}
else
{
activeTriggerManager.leftTrigger.EndPress(hit);
}
endTriggered = true;
}
}
}
// Carry out changes for the current trigger state
void RequestNewState(StateCode newState)
{
if (currentState != newState)
{ // If we have new changes to reflect,
currentState = newState; // Store the new state,
if (!mouseMode)
{
switch (currentState)
{ // Set the appropriate color and controller vibration
case StateCode.NULL:
LineRendSetEndpointColors(nullCol);
OVRInput.SetControllerVibration(hapFreq, nullAmp, raycastController);
break;
case StateCode.HOLD:
LineRendSetEndpointColors(holdCol);
OVRInput.SetControllerVibration(hapFreq, holdAmp, raycastController);
break;
case StateCode.HIT:
LineRendSetEndpointColors(hitCol);
OVRInput.SetControllerVibration(hapFreq, hitAmp, raycastController);
break;
case StateCode.END:
LineRendSetEndpointColors(endCol);
OVRInput.SetControllerVibration(hapFreq, endAmp, raycastController);
break;
}
}
}
}
// Sets both ends of a 2-point line renderer to be the same color
void LineRendSetEndpointColors(Color newColor)
{
if (lineRend != null)
{
lineRend.startColor = newColor;
lineRend.endColor = newColor;
}
}
// Sets the position of both ends of a 2-point line renderer
void DipointLinerendSetPositions(Vector3 position0, Vector3 position1)
{
if (lineRend != null)
{
lineRend.SetPositions(new Vector3[2] {
position0, position1
});
if (invisible)
{
invisible = false;
} // Tell DontDrawLineRend() that there is a visible line render
}
}
/// Don't draw the line renderer
void DontDrawLinerend()
{
if (lineRend != null)
{
if (!invisible)
{ // If there is a visible line render,
lineRend.SetPositions(new Vector3[2] {
Vector3.zero, Vector3.zero
}); // Draw both points to the same position
invisible = true; // Don't bother again until we have a visible line render
}
}
}
#endregion
}
