private void handleFirstTouchBegin(Touch touch){
bool isPlacementCorrecting = activePiece != null && activePiece.GetComponent<PiecePrefabBehaviour>().isPlacementCorrecting();
if(!resetButtonScript.getResettable() && !isPlacementCorrecting){ // don't want to detect piece touches while the machine is resettable or while placement correction is occurrring
GameObject hitObject = getSignificant3DObjectHit(touch);
if(hitObject != null){ // raycast hit a piece
currTouchAction = TouchAction.MovingPiece;
hitObject.GetComponent<PiecePrefabBehaviour>().OnPieceTouchBegin();
return;
}
}
// check if user touched any Canvas objects
if(hitCanvasElement(touch)){
return; // user touched something on the canvas, so don't bother with rotation/zooming/panning
}
// user didn't touch anything (e.g. buttons, scroll bar) on the canvas.
// Since we already know user didn't touch a significant 3D piece either, we'll assume they were either starting to rotate the camera or touching the screen to clear their piece selection.
// Either way, clear their piece selection and begin rotation
ClearActivePiece();
currTouchAction = TouchAction.RotatingCamera;
prevFrameFirstTouchPosition = touch.position;
}
public void removeActivePiece()
{
GameObject activePiece = raycastingScript.activePiece;
PiecePrefabBehaviour activePieceScript = activePiece.GetComponent <PiecePrefabBehaviour>();
// mark the snap-to target GameObject that the piece is currrently occupying, if there is one, as unoccupied
GameObject target = activePieceScript.currOccupiedSnapToTarget;
if (target != null)
{
target.GetComponent <SnapToTargetBehaviour>().occupied = false;
}
// remove activePiece's colliders from the collidersInContact lists of any other GameObjects in contact with activePiece
foreach (Collider colliderInContact in activePieceScript.collidersInContact) // for each collider in contact with activePiece
{
Transform parent = colliderInContact.gameObject.transform.parent;
if (parent == null || parent.gameObject.name != "Workspace Boundaries") // presumably, therefore, the collider in question belongs to a machine piece that's in contact with activePiece
{
PiecePrefabBehaviour pieceInContactScript = getCompletePiece(colliderInContact.gameObject).GetComponent <PiecePrefabBehaviour>(); // get that collider's piece and its script
int lastIndex = pieceInContactScript.collidersInContact.Count - 1;
for (int i = lastIndex; i >= 0; i--) // for each collider in contact with the piece in question
{
Collider colliderInContactWithOtherPiece = pieceInContactScript.collidersInContact[i];
if (isDescendent(colliderInContactWithOtherPiece.gameObject.transform, activePiece.transform)) // if the collider belongs to activePiece
// remove the collider from the collidersInContact list of the piece in question
{
pieceInContactScript.collidersInContact.RemoveAt(i);
}
}
}
}
// finally, actually take care of removing the piece
if (resetButtonScript.getResettable())
{
raycastingScript.piecesRemovedWhileResettable.Add(activePiece);
activePiece.SetActive(false);
}
else
{
Destroy(activePiece);
}
raycastingScript.pieces.Remove(activePiece); // needs to be before the call to clearActivePiece
raycastingScript.ClearActivePiece();
}