I'm linking an arcade button connected to a USB encoder with a Max patch. The button is behaving strangely. Here's what happens:
I have the button mapped to the a key. When Max is open, this functionality breaks. Even outside of Max. Even once I close Max, I need to remap the key. I'm not using MAME or anything like that; just JoytoKey for the mapping.
This issue is negated partially through use of the HIobject. Max recognizes the button and I can use it, however it's not functioning as an on/off. Rather a bang is sent on button press and release. How do I make the button work normally (send a single bang on press, and none on release)?
Here's my patch, if it helps. I don't know how useful it is without my video files:
<pre><code>
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</code></pre>
It's hard to give an exact answer without knowing what your USB device outputs, however in your patch whatever exits the [hi] object goes into the [live.text] button, which is set to Button mode, always converting it to a bang.
In the patch below I set the [live.text] button to Toggle mode. I also took the liberty of cleaning some other things up.
The next thing though is that you will need to find out what part of the output of the hi object is the information you are looking for. You can do that with a [print] object. Then you can select that number with an [unpack] and select the 1's and use that to trigger [random] (see the patch below).
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-----------end_max5_patcher-----------
Related
Using WAA (Web Audio Api) I am using exponentialRampToValueAtTime to create a fade in and out that can be cancelled for the user pressing the "stop" button.
The stops function looks something like this:
this._gainNode.gain.cancelAndHoldAtTime(this._AudioContext.currentTime);
this._gainNode.gain.exponentialRampToValueAtTime(0.000001, this._AudioContext.currentTime + fadeDuration);
The complete function is wrapped in a Promise because I need to do something else after the stop (fadeDuration);
The problem is that in some browsers cancelAndHoldAtTime does not exit and I get some nasty clips that I do not know how to prevent. The same happens with cancelValuesAndHoldAtTime that is even less supported.
I tried with cancelScheduledValues but it does not help.
Is there a workaround or correct alternative to cancelAndHoldAtTime
You can do an approximation by calling setValueAtTime(v, t) where t is the context time at which the user pressed the stop button and v is the estimated value of the exponential at time t.
You'll probably still get a glitch, but it will probably be much better than using just cancelScheduledValues.
This is the reason why cancelAndHoldAtTime was added to the API.
Although maybe the best alternative for cancelAndHoldAtTime is the one recommended for Raymond Toy, to completely remove the clip and any glitches what I ended up doing was making a "Main Gain" between the oscillator Gain and the destination
OSC -> oscGain -> mainGain -> speakers.
Before I do anything I close the mainGain and then cancelScheduledValues and all the other stuff to the oscGain
I am just starting to play with this as an educational tool for a youngster and encounter strange behavior whilst attempting to clone sprites.
I setup a global variable for position x,y in sprite_1 and clone a sprite_2 object. This object immediately copies the global x,y to local x,y and exits. Later sprite_2 renders using the stored local x,y.
sprite_1:
sprite_2:
I expect the four sprites to clone diagonally up/right on the screen according to this small reproduce-able example. Instead I appear to get four sprite_2 objects all on top of each other:
If I add a delay of 1 second onto the end of the clone(x,y) function however all is well:
As all four sprite_2 objects appear to be where the last clone was placed, I have a suspicion that the clones are not created immediately but instead created as a batch all at once, at some time and therefore are all taking the last coordinates from the globals _clone_enemy_x/y.
Is this the case? is there are way to circumvent this behavior or what is the solution?
I have 2 possible solutions to this problem:
Go to the "define clone()()" block, right click it, open up the advanced dropdown, and tick "run without screen refresh".
Get rid of the custom block all together, but use the original source for that block in the actual code.
I hope this helps!
I just installed dwm on Arch and am loving it. However, I found that I have no use for the status bar except when I'm switching tags, so I thought a useful feature would be to only display it while MODKEY is pressed.
I know that MODKEY+b toggles the bar, but I'd like to be able to peek at it while MODKEY's being held down. I'd also prefer that this doesn't consume the event, so I'll still be able to chain additional keys onto the sequence.
The only thing I found online about this was a post from Lokichaos (https://warosu.org/g/thread/24122078):
I split the difference with "peek" behavior. When I hold down Mod4 (my main dwm modkey) it shows the bar (but does not reserve space for it). The bar also auto-shows when there is an urgent client waiting (so I can see the highlighted tag). [...]
Is there any way I could implement this with my config.h file, or would I need to get into the nitty-gritty dwm.c? Any ideas as to how this could be done in an organized fashion so that I could bind other actions to key presses and releases?
Thanks for your help!
--EDIT--
This patch allows you to listen to release events, (they even show you how to toggle the bar with pressing/releasing MODKEY+b), but I'm only able to listen to presses and releases on non-mod keys. Again, my goal is to have the bar display when I press MODKEY, and disappear again when I release it.
Here are the three things I've tried in config.h:
type modifier key function argument
{ KeyRelease,MODKEY, 0, togglebar, {0} },
{ KeyRelease,MODKEY, NULL, togglebar, {0} },
{ KeyRelease,MODKEY, XK_Super_L, togglebar, {0} },
...to no avail.
You may try holdbar patch to serve your purpose. I am using this and it is working seamlessly without any errors.
Note that after using this, togglebar will not work any more and bar will be always hidden. Also you cannot map HOLDKEY to simply MODKEY as it takes keysym bindings. You can get them by running xev and pressing the required key. It's keysym value in hexadecimal will be displayed. I use the Super (Windows) key and it's keysym value is 0xffeb. I have applied the same patch. If you want to see, you can view it on Github.
I hope someone is able to help me with this.
Ableton Live when you set a clip's launch mode to gate, it only plays when you hold down the key. I'm using a patch that takes an OSC message to launch the clip, but it will not work as a gate - it needs to have the stop all clips message, and this won't help in my situation.
I need to "call fire" when 1 and "call stop all clips" when 0, but I'm not sure how to do this.
Can anyone help me with which object I should use? I've looked at various gates and swtiches, but I'm missing something.
Thanks.
Create a new object and type "togedge" or "select" (or its shorthand "sel"). Both of them will have 2 outputs: One for 0, one for not 0.
"togedge" will only output if the input changes.
"sel" will always output, and you can enter different numbers to match your input directly (like "sel 34 56").
Btw you can also use "call stop" on the clip_slot object directly instead of "stop_all_clips" on the track object.
After fiddling with the sel object, I discovered this: I needed to change the live.text object used to launch the clip from button to toggle.
I am programming an FPS (First Person Shooter) game using "Gtkmm" as a window manager and I would like to do the "mouse-look". Therefore, I have to "grab" the mouse pointer to redirect all the mouse motion events to my application window.
There seems to be three overloaded functions to do that job and I have chosen the simplest one for the beginning:
Gdk::GrabStatus Gdk::Window::pointer_grab(bool owner_events, Gdk::EventMask event_mask, guint32 timestamp)
I have tried to put this function to my application but I have had "bad results" so far - it doesn't do what I want it to, it behaves "differently" on "Windows" than on "Linux", etc...
So I will write down what I have done so far, but first, what is my target: "I want to have my application in a window and want to be able to do the mouse-look with a mouse even when I leave the window with the mouse pointer".
So let's get to the function parameters:
-->bool owner_events: when I set it to "true", I got events only when I was inside the window, but (worse) when I set it to "false", I didn't get any events - so I set it to true (the better option :-) )
-->Gdk::EventMask event_mask: there should be those events which I want to catch. For now, I am interested only in mouse motion events, so I put there only "Gdk::POINTER_MOTION_MASK"
-->guint32 timestamp: this I also don't understand but when I put there pure "0", the grab status was OK, thus "GRAB_SUCCESS" (when I tried to set it to 1, 2 or whatever other number, it returned "GRAB_INVALID_TIME" as a grab status) - so I set it to "0"
And now when I run it on Linux, it although grabs the pointer and when I click somewhere outside the window, it doesn't react (thus my window stays always at the top, which is what "I want"), but the problem is that, that the application doesn't catch any events or catches it only when I am inside the window (when I set owner_events to true).
And on Windows it is yet worse: when I click somewhere outside the window, it switches me to the area where I clicked - so this is the same as "without grabbing".
Could someone tell me, what I am doing wrong, or give me a little example on using grabbing in Gtkmm?
For the event_mask, you should include Gdk::ENTER_NOTIFY_MASK and Gdk::BUTTON_RELEASE_MASK so you can ungrab the point when it either reenters the window or when the button is released.
For timestamp, either pass the GdkEvent...::time member, or Gdk::CURRENT_TIME.