In Scratch I have a variable that is supposed to change by one every time a broadcast is recieved, however in testing it changes by three per broadcast and I can't find why. The button used to send the broadcast has 3 clones of it but each have a different function and sending the broadcast depends on the "button selected" variable being set to "fight" so don't think that would effect the outcome.
I looked through all my code and it's not duplicated, theres nothing else changing the variable, and the broadcast is only being sent once at a time. It even works perfectly fine if I click the blocks to run them myself, but when it does it as the function in-game it changes it by three and I can't understand why.
The code for changing the variable is:
When I recieve "attack"
Change "attacktimes" by 1
The code for sending the broadcast is this:
When key "z" pressed
if "enemy turn" = "0"
if "button type" = "fight"
broadcast "fight"
Does anybody know a solution?
Also here is the shared project, it is incomplete though.
My project
Steps for recreating the bug are listed in the instructions
Broadcasts are a powerful mechanism, but they can be hard to control,
especially in a project that uses clones.
I looked through all my code and it's not duplicated
That's irrelevant. It's all in the name: broadcasts go everywhere.
What may seem like a single action when looking at the (static) code, may explode in all directions at runtime.
In general, be very careful when cloning a sprite that has a 'when I receive' message handler.
The message handler will be triggered for every clone, as well as the original sprite.
In your case, sprite 'Error404 Sans' has two clones. Together with the original sprite, that's a total of three objects.
When message 'Attack' comes in, the 'when I receive Attack' script will be executed for each of the three objects.
Since variable 'AttackTimes' is a global variable, it will be incremented three times.
So how to fix this? In this case, the easiest way is to move the whole 'when I receive Attack' script to the stage, to a dummy sprite or any other sprite that is not cloned.
It's cute to have a Sans sprite made up of three parts, giving him that 'breathing' look.
But that is already a big responsibility for a sprite; better implement the 'attacking' part elsewhere.
Otherwise, you'll find yourself being attacked independently by Sans's head, torso and legs.
A more clumsy solution would be use an 'if-then' block to ensure only one specific clone will proceed with the attack.
For the 'if' condition, you will need a 'for this sprite only' variable or anything else that is clone-specific (e.g. position, costume name).
Related
I have a QEntity with a mesh which is set as a primitive type (Points). Beside that I also initialized QObjectPicker and connect four basic signals to functions (clicked, moved, pressed, and released). When I run application and do some mouse events, none of these events is QPickPointEvent. Only QPickEvents occur. Is it possible in Python to trigger a QPickPointEvent?
I also set pick method to PointPicking.
You need to enable point picking using the pick method on the QPickSettings property of the instance of QRenderSettings.
In that case, the QPickEvent will actually be an instance of QPointPickEvent. I'm not sure how you "downcast" that in python though.
But if you entity is indeed using point primitives, then the coordinates of the picked point and the point itself should be the same. The only information you would be missing is the index of the point in it's parent list of primitives.
I made a game have two objects in the hierarchy panel. One called GameScreen and another called Clock I set up. Each has its own script attached. GameScreen uses game.js and the other uses clock.js.
When I win the game a popup box appears and says, "You've won!" This is caused by the game.js script. However, the clock.js is still running, so my clock is still counting down. When the time is up the clock.js makes a popup box saying, "you lose!"
This causes for a "you win" screen to pop up when you win and then later a you lose screen to appear. As you can probably guess, this is super annoying. If there was a way I could change variables in one script from another,, I could get the clock to stop when you won or I could get the game to stop when the time ran out.
Is there some way to do this??
For example here are two javascript files one on clock and the other on GameScreen . I want the first one to change the variable changeMe in the second to two.
1.js:
function start(){
}
2.js:
var changeMe:int;
When you win the game, you can change clock's variable from game.js this way:
GameObject.Find("Clock").GetComponent("clock.js").variable_name = new_value;
, where [variable_name] and [new_value] obviously depend on your project. variable_name has to be an exposed variable.
You can simply use SendMessage() it will make you able to call a function from another object easily.Basically you need to write a function to destroy the clock after wining the game,let's say your function is called destroyClock so you should add that to your game.js script:
gameobject.Find("here goes the name of your clock obj").sendMessage("destroyClock")
I have made like an "Asteroid" copy, that works pretty well! I made it with different modules (enemies, controls and background). Now I have also made like a starting screen, where the player can choose to play the game, view highscores etc.
The problem is that I have no clue how to implement this into a storyboard.. I might have misunderstood the use of modules.
I am starting in a Scene1, which is the intro+buttons to start the game. Next, I want to move to scene2(when player presses start button), and that seems to be no problem, and scene 1 gets purged. But when I die, I want to move to scene1 again. Problem is that some listeners dont get removed, and the game crashes shortly after scene switch.
I guess the main problem is that in my scene2, I have put in require("background"), enemies and controls in my enterscene, which I dont know how to remove when it should be purged.
Ive entered all of the modules and put them in the same group that gets purged on exitscene, but not everything gets removed.
How do you think I would fix this the easiest way? I am very new to Corona and still in a early learning stage.
Display objects, like display.newImageRect()'s and display.newText() that are created in the createScene() function and added to the "group" display group will be automatically removed when the scene is purged.
Any timers, transitions, or audio.plays that have onComplete handlers, as well as network requests and any event handler that attaches to the Runtime must be removed by hand. If you're various object you are creating are doing any of these things, their remove functions should undo these actions so that removing them will clean them up.
I find it best if I'm adding runtime handlers, timers, etc. to do it in enterScene() and make sure I undo them in exitScene(). Then if its something that is done in createScene() it should be cleaned up in destoryScene().
modules are kind deprecated to start.
Second, putting stuff in other files and calling them with "require" is supposed to be used to call libraries, not code that will run. "require" is not a dofile, or a eval, it will run once, and only once (when the first "require" of the file is made).
If you still want to put things in other files, like loading your background, you need to do a "background.lua" file that has a "background.load()" function and a "background.unload()" function, and call them in appropriate places.
I'm trying to use a recent feature of the Scintilla component, which provides OSX-like text-highlighting effect (the yellow animated bouncing box), and I'm stuck with an error that pops up intermittently :
EXC_BAD_ACCESS
pointing to this particular line :
if (layerFindIndicator!=nil)
if ([layerFindIndicator animationForKey:#"animateFound"])
[layerFindIndicator removeAnimationForKey:#"animateFound"];
(the ifs are mine; just in case I caught the object layerFindIndicator being nil, or deallocated or whatever... Unfortunately, it doesn't help...)
layerFindIndicator is seemingly a subclass of CAGradientLayer. (You may see the full code for layerFindIndicator, here).
Since, I'm an absolute newbie to Quartz Core, could please give me any hint as to HOW this could be debugged?
Since, I'm an absolute newbie to Quartz Core, could please give me any hint as to HOW this could be debugged?
This doesn't have anything to do with QuartzCore specifically (at least, I hope not)—it's general this-object-has-been-killed-before-its-time-how-do-I-find-the-killer stuff.
In Xcode:
Edit your current scheme.
For the Profile action, set it to use the Debug build configuration.
Dismiss that and then hit the Profile command.
Xcode will build for that action and then launch Instruments.
Instruments will prompt you to choose a template; you want the Zombies template. Once you've chosen it, Instruments will create a trace document and run your application. Switch to your application (if it isn't already frontmost), then do whatever causes the crash.
If the crash really is a dead-object crash, Zombies will reveal it. You'll get a flag in Instruments's timeline saying something like “message sent to zombie object 0xd3c2b1a0”, and your program will probably exit shortly thereafter.
In that flag is a tiny little button that looks like this: ➲ except it'll be gray. Click on it.
That takes you to the history of that object (actually of that address, including any previous objects or other allocations that have started at that address). Show your Extended Detail Pane (the one that appears on the right showing a stack trace), then scroll down to the end and then move backward (upward) step by step through time, looking at releases and autoreleases, looking for the one that isn't balancing out the object's allocation or a retain.
The solution will probably involve one or more of:
Changing a property to be strong or weak rather than assign/unsafe_unretained
Adding a property where you previously did not strongly own an object
Rearchitecting some things, if it's not clear which of the above you need to do or if either one of them seems like a filthy hack
Switching to ARC to get weak properties and __weak instance variables (both of which get set to nil automatically when the referenced object dies) and to get local variables being implicitly initialized to nil
But it'll depend on what you find in Instruments. And, of course, there's the chance that your problem—the bad access—isn't a dead object at all and all of the above will not help you.
Try this:
if (layerFindIndicator!=nil){
if ([layerFindIndicator animationForKey:#"animateFound"]){
[layerFindIndicator removeAnimationForKey:#"animateFound"];
}
}
Also check to see if it is released else were.
EDIT:
Another thing I found was you didn't have an white space in the if. Your code should now look like this:
if (layerFindIndicator != nil){
if ([layerFindIndicator animationForKey:#"animateFound"]){
[layerFindIndicator removeAnimationForKey:#"animateFound"];
}
}
I want to create a new object so as to instantiate and use it several times;
For example, if I want to create an object that has a label and a button inside, how do I? I created a new NSObject but inside it has nothing, then how do I make everything from scratch since there was a viewDidLoad for example (obviously, since it has a view)?
thanks!
Your questions lead me to think that you're really just starting out. There's nothing wrong with that, but rather than trying to summarize several megabytes of documentation in a few paragraphs, I'm just going to point you to the iOS Starting Point. I think that you're just trying to create a container that can hold other UI components? If so, use a UIView for that. However, don't jump in and try to get something specific done without first reading through some of the Getting Started documents -- you'll just end up back here, and we'll just point you back to the docs. You might like the Your First iOS Application guide, as that lets you get your feet wet but explains things along the way.