private void InitDragAction(DragAction dragAction, GameObject target, ClickAction mouseActionFallback)
{
dragIniting = true;
this.dragAction = dragAction;
dragInitScreenPos = Input.mousePosition;
dragStartDist = target is null ? 1 : Vector3.Distance(camera.transform.position, target.transform.position);
dragTarget = target;
dragClickActionFallback = mouseActionFallback;
}
private bool HandleDrag()
{
if (dragAction is null)
{
return(false);
}
if (dragIniting)
{
// Cancel if releases before starting drag
if (!Input.GetKey(dragAction.specifiers.HasFlag(HotkeySpecifier.Secondary) ? secondaryKey : primaryKey))
{
dragAction = null;
if (dragClickActionFallback && dragClickActionFallback.validate(dragTarget))
{
ExecuteClickAction(dragClickActionFallback, dragTarget);
}
return(false);
}
// Check if enough movement
var dragDist = Vector2.Distance(dragInitScreenPos, Input.mousePosition);
if (dragDist < minDragDist)
{
return(true);
}
dragIniting = false;
dragAction.start(dragTarget, GetDragPosition());
}
// End if released
if (!Input.GetKey(dragAction.specifiers.HasFlag(HotkeySpecifier.Secondary) ? secondaryKey : primaryKey))
{
dragAction.end(dragTarget, GetDragPosition());
if (!dragAction.specifiers.HasFlag(HotkeySpecifier.Persistent))
{
_actions.Remove(dragAction);
}
dragAction = null;
return(false);
}
dragAction.drag(dragTarget, GetDragPosition());
return(true);
Vector3 GetDragPosition() => camera.transform.position + camera.ScreenPointToRay(Input.mousePosition).direction *dragStartDist;
}
