I am studying the Godot Engine and GDScript and I searched on the internet about keyboard events, but I didn't understand. Is there something in Godot like: on_key_down("keycode")?
Godot versions 3.0 and up have new input-polling functions that can be used anywhere in your scripts:
Input.is_action_pressed(action) - checks if the action is being pressed
Input.is_action_just_pressed(action) - checks if the action was just pressed
Input.is_action_just_released(action) - checks if the action was just released
You can use InputEvent to check for specific Keys.
Check out the documentation: http://docs.godotengine.org/en/stable/learning/features/inputs/inputevent.html
There's no official OnKeyUp option, but you can use the _input(event) function to receive input when an action is pressed/released:
func _input(event):
if event.is_action_pressed("my_action"):
# Your code here
elif event.is_action_released("my_action):
# Your code here
Actions are set in Project Settings > Input Map.
Of course you don't always want to use _input, but rather get inputs within the fixed updates. You can use Input.is_key_pressed() but there's no is_key_released(). In that case you can do this:
var was_pressed = 0
func _fixed_process(delta):
if !Input.is_key_pressed() && was_pressed = 1:
# Your key is NOT pressed but WAS pressed 1 frame before
# Code to be executed
# The rest is just checking whether your key is just pressed
if Input.is_key_pressed():
was_pressed = 1
elif !Input.is_key_pressed():
was_pressed = 0
That's what I've been using. Feel free to inform me if there's a better way to do OnKeyUp in Godot.
If you're considering using Input or _Input(event), it's important you go into your project settings and bind your keys.
Press project setting in the toolbar, go to input map and then you can name an action and add any key, mouse or joystick to it. The in the code use:
if Input.is_action_just_pressed('Your action name'):
print('Pressed!')
where is project settings button
There are multiple ways to register keys:
-is_key_pressed("Enter")
-Input.is_action_pressed(*action*)
I would use Input.is_action_pressed() because it allows you to work with the input manager.
Related
This is a feature you see in a lot of IRC clients. Basically, if you type a string "Ad" and then hit tab the client will fill in the first matching nick (in the case of an IRC client) mathcing 'Ad' - so let's say it fills in Adam. But, like bash, if you keep hitting tab it should cycle through all the names containing "Ad" as a prefix.
I'm not quite sure how to implement this in the Wndproc for a RichEdit though. Specifically, when a user hits tab I need to get the current 'token', save it, and get all the prefixes and fill in the first. If he hits tab again I need to get the next prefix, and so on, but I need to empty the prefix list once I get a WM_CHAR that's not tab -- I think?
I'm wondering if there's some easier, less hacky way though, or if anybody has seen code that does this?
Thanks.
Useful though Remy's comments are, it seems to me that this question is more about what the logic should be to implement kind-of-bash-style auto-completion than anything else. On that basis, and based on what you posted, which I found slightly confusing, I think it should be something like this (pseudo-code);
int autocomplete_index = 0;
string autocomplete_prefix;
on_tab:
if (autocomplete_prefix == "")
{
autocomplete_prefix = current_contents_of_edit_field ();
autocomplete_index = 0;
}
auto autocomplete_result = get_autocomplete_string (autocomplete_prefix, autocomplete_index++);
if (autocomplete_result != "")
replace_contents_of_edit_field_and_move_caret_to_end (autocomplete_result);
else
beep (); // or cycle round
done;
on_any_other_char:
autocomplete_prefix = "";
If the rich edit control is embedded in a dialog, you also need to ensure that the dialog manager does not speak in and snaffle VK_TAB before you do. That normally doesn't happen for rich edit controls (although it does for regular edit controls - go figure) but if it does you can handle WM_GETDLGCODE appropriately in your WndProc (details on request).
And 'hacky'? Why? I don't think so. Sounds like a good idea to me.
I have a ItemSelector component inside a Window. I have implemented a search functionality that dynamically finds the matching entry based on user's keyboard input.
Now I just want to highlight/focus such item inside the ItemSelector.
I'm looking for something like:
// when the search returned a result and got the related index in the store
function onSearchPerformed(index) {
var cmp = this;
cmp.itemSelector.setSelected(index); // here I'd be highlighting the entry
}
Example
Imagine a simple ItemSelector like this one taken from the web.
User types 'Delaw' and my search function detects that there is an entry with name Delaware and it's at position 3 in the store.
All I want to do is to programmatically highlight the row/entry 'Delaware' just as if you clicked on it.
This ux component uses a boundList, or better 2 of them.
A from and a toList.
You need to get a reference to the right boundlist.
More on that you will find here: http://docs.sencha.com/extjs/6.0.1/classic/src/ItemSelector.js.html
Basically you can do something like this:
https://fiddle.sencha.com/#view/editor&fiddle/24ec
afterrender: function(cmp){
Ext.defer(function(){
var boundlist = cmp.down('boundlist');
item = boundlist.all.item(1);
boundlist.highlightItem(item);
},300);
}
After you have a ref to the correct boundlist, you can simply highlight the item using:
http://docs.sencha.com/extjs/6.0.1/classic/Ext.view.BoundList.html#method-highlightItem
Take care that you may need to call following function before:
http://docs.sencha.com/extjs/6.0.1/classic/Ext.view.BoundList.html#method-clearHighlight
To find the correct item should't be too hard.
There are two ways to solve the issue
One is by following #devbnz answer, marked as correct. This is preferable, if you just want to graphically highlight the entry without triggering any event.
However, by hovering on other entries, you will lose the highlight on your current entry.
The second one, as suggested by #guilherme-lopes in the comments, may be preferable in cases in which you want the selection to act as if you actually clicked on an entry, which will trigger the selectionchange event and similar...
Depending on the situation, I ended up using either.
cantSee = collision_line(x,y,obj_player.x,obj_player.y,obj_corner,false,true)
canSee = !(collision_line(x,y,obj_player.x,obj_player.y,obj_corner,false,true))
Define the loop as the following:
if cantSee {
cantSeeTimer = cantSeeTimer +1
}
if cantSeeTimer >60 {
speed=0
stopped=true
} else {
mp_potential_step(obj_player.x,obj_player.y,5,false)
}
}
if stopped=true && canSee {
mp_potential_step(obj_player.x,obj_player.y,5,false)
loop()
}
I know the language is bad, but I just want to create a loop command to summon at will.
Thanks, Finn.
so you haven't specified which object in your game currently has this code but it shouldn't matter too much.
So in Game Maker or Game Maker Studio there are a series of events an object can have and one of them is called a "Step" event. A step event is basically a loop that will cycle the amount of times the room speed is per second. Eg: If the room speed of a room is 30 the step event will loop 30 times per second.
I think I can see what you are trying to do and I think I have a solution for you.
Since you can write GML code I am going to assume you understand how to use the GMS or GM IDE.
We want to create a new object called obj_control (or you can choose a custom name). Also don't give this object a sprite as we don't want the player to see it.
Now we want to add an event to our new object so make sure you still have the windows for obj_control (or whatever u called it open). and click on the 'Add Event button' shown in this image: http://imgur.com/A7szwFO
Once you click on it, click on 'Step'. http://imgur.com/s0ksiyD
Now select 'Step' again. ('Begin Step' and 'End Step' don't do what we want so let's just ignore them)
Now we need to add your code to the step event we just created. So make sure you are on the 'Control' tab and find the script editor (you should know where to find it) and drag one into the 'Actions' for the step event.
http://imgur.com/de3gE01
Now a script editor should pop up automatically but if it doesn't just double click the "Execute piece of code". Now we just need to copy and paste all of your code into the script editor.
http://imgur.com/sNBOCFu
Now click on the green tick on the top left corner of the window to save the code.
Now before we are done let's make sure we define the variables in a create event. So make a create event and add this code:
cantSee = collision_line(x,y,obj_player.x,obj_player.y,obj_corner,false,true)
canSee = !(collision_line(x,y,obj_player.x,obj_player.y,obj_corner,false,true))
After you have added that create event and inserted that code into it save all changes to the object.
All that is left is to add this object we created to every room of the game so it can function.
Hopefully this helped and if it didn't just let me know and we can get it sorted.
My UIPageViewController was working fine in iOS 5. But when iOS 6 came along, I wanted to use the new scroll transition style (UIPageViewControllerTransitionStyleScroll) instead of the page curl style. This caused my UIPageViewController to break.
It works fine except right after I've called setViewControllers:direction:animated:completion:. After that, the next time the user scrolls manually by one page, we get the wrong page. What's wrong here?
My workaround of this bug was to create a block when finished that was setting the same viewcontroller but without animation
__weak YourSelfClass *blocksafeSelf = self;
[self.pageViewController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:YES completion:^(BOOL finished){
if(finished)
{
dispatch_async(dispatch_get_main_queue(), ^{
[blocksafeSelf.pageViewController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:NULL];// bug fix for uipageview controller
});
}
}];
This is actually a bug in UIPageViewController. It occurs only with the scroll style (UIPageViewControllerTransitionStyleScroll) and only after calling setViewControllers:direction:animated:completion: with animated:YES. Thus there are two workarounds:
Don't use UIPageViewControllerTransitionStyleScroll.
Or, if you call setViewControllers:direction:animated:completion:, use only animated:NO.
To see the bug clearly, call setViewControllers:direction:animated:completion: and then, in the interface (as user), navigate left (back) to the preceding page manually. You will navigate back to the wrong page: not the preceding page at all, but the page you were on when setViewControllers:direction:animated:completion: was called.
The reason for the bug appears to be that, when using the scroll style, UIPageViewController does some sort of internal caching. Thus, after the call to setViewControllers:direction:animated:completion:, it fails to clear its internal cache. It thinks it knows what the preceding page is. Thus, when the user navigates leftward to the preceding page, UIPageViewController fails to call the dataSource method pageViewController:viewControllerBeforeViewController:, or calls it with the wrong current view controller.
I have posted a movie that clearly demonstrates how to see the bug:
http://www.apeth.com/PageViewControllerBug.mov
EDIT This bug will probably be fixed in iOS 8.
EDIT For another interesting workaround for this bug, see this answer: https://stackoverflow.com/a/21624169/341994
Here is a "rough" gist I put together. It contains a UIPageViewController alternative that suffers from Alzheimer (ie: it doesn't have the internal caching of the Apple implementation).
This class isn't complete but it works in my situation (namely: horizontal scroll).
As of iOS 12 the problem described in the original question seems to be almost fixed. I came to this question because I experienced it in my particular setup, in which it does still happen, hence the word "almost" here.
The setup I experienced this issue was:
1) the app was opened via a deep link
2) based on the link the app had to switch to a particular tab and open a given item there via push
3) described issue happened only when the target tab was not previously selected by user (so that UIPageViewController was supposed to animate to that tab) and only when setViewControllers:direction:animated:completion: had animated = true
4) after the push returning back to the view controller containing the UIPageViewController, the latter was found to be a big mess - it was presenting completely wrong view controllers, even though debugging showed everything was fine on the logic level
I supposed that the root of the problem was that I was pushing view controller very quick after setViewControllers:direction:animated:completion: called, so that the UIPageViewController had no chance to finish something (maybe animation, or caching, or something else).
Simply giving UIPageViewController some spare time by delaying my programmatic navigation in UI via
DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 1) { ... }
fixed the issue for me. And it also made the programmatic opening of the linked item more user friendly visually.
Hope this helps someone in similar situation.
Because pageviewVC call multi childVC when swipe it. But we just need last page that visible.
In my case, I need to change index for segmented control when change pageView.
Hope this help someone :)
extension ViewController: UIPageViewControllerDelegate {
func pageViewController(_ pageViewController: UIPageViewController, didFinishAnimating finished: Bool, previousViewControllers: [UIViewController], transitionCompleted completed: Bool) {
guard let pageView = pageViewController.viewControllers?.first as? ChildViewController else { return }
segmentedControl.set(pageView.index)
}
}
This bug still exists in iOS9. I am using the same workaround that George Tsifrikas posted above, but a Swift version:
pageViewController.setViewControllers([page], direction: direction, animated: true) { done in
if done {
dispatch_async(dispatch_get_main_queue()) {
self.pageViewController.setViewControllers([page], direction: direction, animated: false, completion: {done in })
}
}
}
Another simple workaround in Swift: Just reset the UIPageViewController's datasource. This apparently clears its cache and works around the bug. Here's a method to go directly to a page without breaking subsequent swipes. In the following, m_pages is an array of your view controllers. I show how to find currPage (the index of the current page) below.
func goToPage(_ index: Int, animated: Bool)
{
if m_pages.count > 0 && index >= 0 && index < m_pages.count && index != currPage
{
var dir: UIPageViewController.NavigationDirection
if index < currPage
{
dir = UIPageViewController.NavigationDirection.reverse
}
else
{
dir = UIPageViewController.NavigationDirection.forward
}
m_pageViewController.setViewControllers([m_pages[index]], direction: dir, animated: animated, completion: nil)
delegate?.tabDisplayed(sender: self, index: index)
m_pageViewController.dataSource = self;
}
}
How to find the current page:
var currPage: Int
{
get
{
if let currController = m_pageViewController.viewControllers?[0]
{
return m_pages.index(of: currController as! AtomViewController) ?? 0
}
return 0
}
}
STATEMENT:
It seems that Apple has spotted that developers are using UIPageViewController in very different applications that go way beyond the
originally intended ones Apple based their design-choices on in the first place. Rather than using it in a gesture driven linear fashion
PVC is often used to programmatically jump to random
positions within a structured environment. So they have enhanced their implementation of UIPageViewController and the class is now calling both DataSource
callbacks
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController
after setting a new contentViewController on UIPageViewController with
[self.pageViewController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:YES completion:nil];
even if an animated turn of pages rather suggests a linear progress in an e.g. page hierarchy like a book or PDF with consecutive pages. Although - I doubt that Apple from a HIG standpoint
is very fond of seeing PVC being used this way, but - it doesn't break backwards compatibility, it was an easy fix, so - they eventually did it. Actually it is just one more call of one of the two DataSource methods that is absolutely unnecessary in a linear environment where pages (ViewControllers) have already been cashed for later use.
However, even if this enhancement might come in very handy for certain use-cases the initial behavior of the class is NOT to be considered a bug. The fact that a lot of developers do - also in other
posts on SO that accuse UIPageViewController of misbehavior - rather emphasizes a widely spread misconception of its design, purpose and functionality.
Without trying to offend any of my fellow developers here in this great facility I nonetheless decided not to remove my initial 'disquisition' that clearly explains to the OP the mechanics of PVC and why his assumption is wrong that he has to deal with a bug here.
This might also be of use for any other fellow developer too who struggles with some intricacies in the implementation of UIPageViewController!
ORIGINAL ANSWER:
After having read all the answers over and over again - included the
accepted one - there is just one more thing left to say...
The design of UIPageViewController is absolutely FLAWLESS and all the
hacks you submit in order to circumvent an alleged bug is nothing but
remedies for your own faulty assumptions because you goofed it up in the
first place!!!
THERE IS NO BUG AT ALL! You are just fighting the framework. I'll explain why!
There is so much talk about page numbers and indices! These are concepts the
controller knows NOTHING about! The only thing it knows is - it is showing
some content (btw. provided by you as a dataViewController) and that it can
do something like a right/left animation in order to imitate a page turn.
CURL or SCROLL...!!!
In the pageViewController's world there only exists a current SPACE (let's call
it just this way to avoid confusion with pages and indices).
When you initially set a pageViewController it only minds about this very SPACE.
Only when you start panning its view it starts asking its DataSource what it
eventually should display in case a left/right flip should happen. When you start
panning to the left the PVC asks first for the BEFORE-SPACE and then for the
AFTER-SPACE, in case you start to the right it does it the other way round.
After the completed animation (a new SPACE is displayed by the PVC's view) the
PVC considers this SPACE as its new center of the universe and while it is at it, it
asks the DataSource about the one it still does not know anything about. In case of
a completed turn to the right it wants to know about the new AFTER space and in
case of a completed turn to the left it asks for a new BEFORE space.
The old BEFORE space (from before the animation) is in case of a completed turn to
the right completely obsolete and gets deallocated as soon as possible. The old center
is now the new BEFORE and the former AFTER is the new center. Everything just
shifted one step to the right.
So - no talk of 'which page' or 'whatever index' - just simply - is there a BEFORE or
an AFTER space. If you return NIL to one of the DataSource callbacks the PVC just
assumes it is at one extreme of your range of SPACES. If you return NIL to both
callbacks it assumes it is showing the one and only SPACE there is and will never
ever again call a DataSource callback anymore! The logic is up to you! You define
pages and indices in your code! Not the PVC!!!
For the user of the class there are two means of interacting with the PVC.
A pan-gesture that indicates whether a turn to the BEFORE/AFTER space is desired
A method - namely setViewControllers:direction:animated:completion:
This method does exactly the same than the pan gesture is doing. You are indicating the
direction (e.g. UIPageViewControllerNavigationDirectionBackward/Forward)
for the animation - if there is one intended - which in other words just means -> going to
BEFORE or AFTER...
Again - no mentioning of indices, page-numbers etc....!!!
It is just a programmatically way of achieving the same a gesture would!
And the PVC is doing right by showing the old content again when moving back
to the left after having moved to the right in the first place. Remember
- it is just showing content (that you provide) in a structured way - which is a 'single page turn' by design!!!
That is the concept of a page turn - or BOOK, if you like that term better!
Just because you goof it up by submitting PAGE 8 after PAGE 1 doesn't mean the PVC
cares at all about your twisted opinion of how a book should work. And the user of your
apps neither. Flipping to the right and back to the left should definitely result in reaching
the original page - IF done with an animation. And it is up to YOU to correct the goof by
finding a solution for the disaster. Don't blame it on the UIPageViewController. It is doing
its job perfectly!
Just ask yourself - would you do the same thing with a PAGE-CURL animation? NO ?
Well, neither should you with a SCROLL animation!!! An animated page turn is a page turn and only a page turn!
In either mode!
And if you decide to tear out PAGE 2 to PAGE 7 of your BOOK that's perfectly fine!
But just don't expect UIPageViewController to invent a non-existing PAGE 7 when turning back to the recent page unless YOU tell it that things have changed...
If you really want to achieve an uncoordinated jump to elsewhere, well - do it without an
animation! In most cases this will not be very elegant but - it's possible... -
And the PVC even plays nicely along! When jumping to a new SPACE without animation
it will ask you further down the road for both - the BEFORE and AFTER controller. So your application-logic can keep up with the PVC...
But with an animation you are always conveying - move to the previous/next space (BEFORE -
AFTER). So logically there is no need at all for the PVC to ask again about a space it already
knows about when animating page turns!!!
If you wanna see PAGE 7 when flipping back to the left after having animated from PAGE 1
to the right - well, I would say - that's definitely your very own problem!
And just in case you are looking for a better solution than the 'completion-block' hack from
the accepted answer (because with it you are doing work beforehand for something that might
possibly not even get used further down the road) use the gesture recognizer delegate:
- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
Set your PVC's DataViewController here (without animation) if you really intend to go back
left to PAGE 7 and the DataSource will be asked for BEFORE and AFTER and you can submit
whatever page you like! With a flag or ivar that you should have stashed away when doing your uncontrolled
jump from PAGE 1 to 8 this should be no problem...
And when people keep on complaining about a bug in the PVC - doing 2 page turns when it is
supposed to do 1 turn only - point them to this article.
Same problem - triggering an un-animated setViewControllers: method within the transition gesture
will cause exactly the same havoc. You think you set the new center - the DataSource is asked
for the new BEFORE - AFTER dataController - you reset your index count... - Well, that seems OK...
But - after all that business the PVC ends its transition/animation and wants to know about the
next (still unknown to it) dataViewController (BEFORE or AFTER) and also triggers the DataSource. That's totally justified ! It needs to know where in its small BEFORE - CENTER - AFTER
world it is and be prepared for the next turn.
But your program-logic adds another index++ count to its logic and suddenly got 2 page turns !!!
And that is one off from where you think you are.
And YOU have to account for that! Not UIPageViewController !!!
That is exactly the point of the DataSourceProtocol only having two methods! It wants to be as generic as possible - leaving you the space and freedom to define your own logic and not being stuck with somebody else's special ideas and use-cases! The logic is completely up to you. And only because you find functions like
- (DataViewController *)viewControllerAtIndex:(NSUInteger)index storyboard:(UIStoryboard *)storyboard position:(GSPositionOfDataViewController)position;
- (NSUInteger)indexOfViewController:(DataViewController *)viewController;
in all the copy/pasted sample applications in the cloud doesn't necessarily mean that you have to eat that pre-cook food! Extend them any way you like! Just look above - in my signature you will find a 'position:' argument! I extended this to know later on if a completed page turn was a right or a left turn. Because the delegate unfortunately just tells you whether your turn completed or not! It doesn't tell you about the direction! But this sometimes matters for index-counting, depending on your application's need...
Go crazy - they are your's...
HAPPY CODING !!!
I would like to know how to get the value for the +1 value((if there are 10 clicks +1 button, store 10 as a variable). This would be helpful for analysis purposes.
I know the count parameter is only Boolean or plusone.state returns on/off but is there something like plusone.value? ( i tried it, it's undefined)
Thanks
Download the following url: https://plusone.google.com/u/0/_/+1/fastbutton?count=true&url=URLENCODED_URI via your favorite automatic method (curl, wget, file_get_contents, etc...)
URLENCODED_URI is the site you which to know the number of +1's for, e.g. http://www.google.com
For example, fetch the URI https://plusone.google.com/u/0/_/%2B1/fastbutton?count=true&url=http://www.google.com/ and locate the first occurance of window.__SSR = {'c': 32414.0 ,'si'. Preferably use regexp for this, but I'll leave the implementation to you and your chosen programming language.
The float number following 'c' is the number of +1's the site have. For google.com this is 32.414. Don't worry about it being a float, it is allways an integer in float format, so you can safely convert it to an integer.
There is an undocumented API for this described here - http://www.tomanthony.co.uk/blog/google_plus_one_button_seo_count_api/
Directions for +1 button tracking can be found at http://yoast.com/plus-one-google-analytics/
On the button creation screen, create a js callback then track the clicks using Google analytics with the following code:
<script type="text/javascript">
function plusone_vote( obj ) {
_gaq.push(['_trackEvent','plusone',obj.state]);
}
</script>
Alternately, use the javascript callback to track it any way you wish.