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In my LibGdx game,enemies are coming in to the screen one by one.
I want to make enemeies appear at a particular time after the game starts.
How can I do it efficiently?
The TimerTest libGDX demo demonstrates your desired behaviour:
public class TimerTest extends GdxTest {
#Override
public void create () {
Timer timer = new Timer();
Task task = timer.scheduleTask(new Task() {
#Override
public void run () {
Gdx.app.log("TimerTest", "ping");
}
}, 1, 1);
Gdx.app.log("TimerTest","is task scheduled: "+String.valueOf(task.isScheduled()));
}
}
This is libGDX's implementation of a Timer/Task.
Create a new Timer and a new Task via Timer.scheduleTask. The code in the run method will be executed at every intervalSeconds seconds. In this case, it will log a message every second, with a delay of one second.
See the libGDX documentation for more.
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I have a function that returns an interpolated string for example.
`This is my string $t(some.value)`
The issue I am facing is that t is returned after I get the interpolated string. For example
const mainFunction = (targetString) => {
const { t } = getTranslationService();
return targetString;
}
I want to resolve the value and return the processed string in the mainFunction. I tried with eval but it didn't work
The answer in case it is useful for someone else
My first assumption was wrong, the function t is async.
The second was it was more complex than I expected, I needed to create a locale folder with a file en-US.json since how it works and all these it is relying on i18n
Finally, the target string should be in the JSON file. the t function will call a key from the JSON file and the targetString (enclosed between curly braces) will be translated. All this works in an asynchronic way.
you can do:
`This is my string ${t(some.value)}`
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literals
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I've got this example:
try {
images = this.getFinderFiles(path);
} catch (DirectoryNotFoundException exception) {
return [];
}
There is something wrong with this code?
I would recommend not to use exception handling for expected error situations. Exception handling takes time, stack unwinding has to be done.
In your case, if you usually can expect that 'path' usually exists and therefore the method can return a decent result - so you do not expect that 'this.getFinderFiles' fails - then it is fine to use exceptions here. But otherwise test the path for existence first before calling 'getFinderFiles'. That should be faster and for my taste more readable.
Btw. can you check the existence of 'path' within 'getFinderFiles' and eventually return '[]' already there?
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I'm a little confused about this.
I have a server returning a JSON string that represents an array of custom objects that I have defined. I need to perform some tests and check if each element of this array can be correctly cast/parsed to my object.
What is the correct way to do this?
I thought about creating a new Object and passing my JSON.parse(element) result to the constructor, but then how do I check if it was correctly created? Does it throw an exception?
Here is the simple way to check it:
checkJsonObject(string) {
try {
JSON.parse(string);
} catch (e) {
return false;
}
return true;
}
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I am beginner in programming with the CakePhp framework and I want to dispaly data from the database on the HOME page of the website.
I've already create the model + view + controller.
Thank you.
You can either do that in your homepage controller
<?php
class HompageController extends AppController {
public function index(){
...
//For us to be able to call a different Model if it doesnt have a relationship with this model. Instantiate Product Model
$Products = ClassRegistry::init('Product');
//to get the data in product database. you can do it in two ways
//1. use the find method to get all data in Product database
$myproducts = $Products->find('all');
//2. or call some function in your Product model e.g. get_products() that return the data.
$myproducts = $Products->get_products();
//pass myproducts variable to homepage index
$this->set('myproducts', $myproducts);
}
?>
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Implicit coercion of a value with static type object to a possibly unrelated number type
but iv defined it in
private var width:Object;
public function SetEnemyStartPosition():void
{
var stage:Object;
this.x = stage.stageWidth * .2 - (this.width * .2);
You've created a variable of the generic type Object, but you're treating it as a number.
From the code provided, it doesn't seem like you ever set a value to the variable width which makes the:
(this.width * .2)
part of your code wrong, it is null, and of the wrong type to do arithmetic operations on to begin with. I'd suggest changing the variable declaration to this:
private var width:Number;
and making sure width isn't null before you start using it.