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  • Thread too slow. Better way to execute code (Android AndEngine)?

    - by rphello101
    I'm developing a game where the user creates sprites with every touch. I then have a thread run to check to see if those sprites collide with any others. The problem is, if I tap too quickly, I cause a null pointer exception error. I believe it's because I'm tapping faster than my thread is running. This is the thread I have: public class grow implements Runnable{ public grow(Sprite sprite){ } @Override public void run() { float radf, rads; //fill radius/stationary radius float fx=0, fy=0, sx, sy; while(down){ if(spriteC[spriteNum].active){ spriteC[spriteNum].sprite.setScale(spriteC[spriteNum].scale += 0.001); if(spriteC[spriteNum].sprite.collidesWith(ground)||spriteC[spriteNum].sprite.collidesWith(roof)|| spriteC[spriteNum].sprite.collidesWith(left)||spriteC[spriteNum].sprite.collidesWith(right)){ down = false; spriteC[spriteNum].active=false; yourScene.unregisterTouchArea(spriteC[spriteNum].sprite); } fx = spriteC[spriteNum].sprite.getX(); fy = spriteC[spriteNum].sprite.getY(); radf=spriteC[spriteNum].sprite.getHeightScaled()/2; Log.e("F"+Float.toString(fx),Float.toString(fy)); if(spriteNum>0) for(int x=0;x<spriteNum;x++){ rads=spriteC[x].sprite.getHeightScaled()/2; sx = spriteC[x].body.getWorldCenter().x * 32; sy = spriteC[x].body.getWorldCenter().y * 32; Log.e("S"+Float.toString(sx),Float.toString(sy)); Log.e(Float.toString((float) Math.sqrt(Math.pow((fx-sx),2)+Math.pow((fy-sy),2))),Float.toString((radf+rads))); if(Math.sqrt(Math.pow((fx-sx),2)+Math.pow((fy-sy),2))<(radf+rads)){ down = false; spriteC[spriteNum].active=false; yourScene.unregisterTouchArea(spriteC[spriteNum].sprite); Log.e("Collided",Boolean.toString(down)); } } } } spriteC[spriteNum].body = PhysicsFactory.createCircleBody(mPhysicsWorld, spriteC[spriteNum].sprite, BodyType.DynamicBody, FIXTURE_DEF); mPhysicsWorld.registerPhysicsConnector(new PhysicsConnector(spriteC[spriteNum].sprite, spriteC[spriteNum].body, true, true)); } } Better solution anyone? I know there is something to do with a handler, but I don't exactly know what that is or how to use one.

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  • removenode in javascript chrome

    - by Nishima
    Hi All, I want to removw a node from a page for that i am using the below mentioned function document.getElementById(id).removeNode(true); .This is working fine in IE but not in Chrome. Can anyone tell me how can i do that Thanks

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  • manage messages reported as spam

    - by parm.95
    I want to have an admin page to manage user messages reported as 'spam'. I know how to use MySql and php to have a list of messages reported but I don't know what is the more safe way to access to this page. Local, https,... What strategy use big websites as Facebook, MySpace,... to verify that a message is a true spam and to delete it?

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  • C#: check if a string start with any character in a list

    - by JoesyXHN
    Hi, I want to check whether a string starts with any character in a list. My current implementation in C# is as follows: char[] columnChars = new char[] { 'A', 'B', 'C', 'D', 'E' }; private bool startWithColumn(string toCheck) { for(int i=0; i<columnChars.Length; i++) if (toCheck.StartsWith(columnChars[i]+"")) { return true; } return false; } I would like to know if any solution is better?

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  • zend form multicheckboxes naming

    - by neziric
    how do i have to nest multicheckboxes so that they are named like this 'foo[]['bar']' . i've used subforms but they give me naming like this 'foo[bar][]'. my code: $sub = new Zend_Form_SubForm('sub'); $wish = new Zend_Form_Element_MultiCheckbox('bar'); $wish ->setMultiOptions($education_direction->getAll()) ->setLabel('Wish') ->setRequired(true); $sub-addElements(array( $wish )); $this-addSubForm($sub, 'foo');

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  • PHP-OOP extending two classes?

    - by user1292810
    I am very beginner to OOP and now I am trying to write some PHP class to connect with FTP server. class ftpConnect { private $server; private $user; private $password; private $connection_id; private $connection_correct = false; public function __construct($server, $user = "anonymous", $password = "[email protected]") { $this->server = $server; $this->user = $user; $this->password = $password; $this->connection_id = ftp_connect($this->server); $this->connection_correct = ftp_login($this->connection_id, $this->user, $this->password); if ( (!$this->connection_id) || (!$this->connection_correct) ){ echo "Error! Couldn't connect to $this->server"; var_dump($this->connection_id); var_dump($this->connection_correct); return false; } else { echo "Successfully connected to $this->server, user: $this->user"; $this->connection_correct = true; return true; } } } I reckon that body of the class is insignificant at the moment. Main issue is that I have some problems with understanding OOP idea. I wanted to add sending emails every time, when the code is run. I have downloaded PHPMailer Class and extended my class with it: class ftpConnect extends PHPMailer {...} I have added some variables and methods and everything works as expected to that point. I thought: why not to add storing everything in database. Everytime user runs above code, proper information should be stored in database. I could edit my ftpConnect class and add database connecting to the constructor, and some other methods to updating tables. But database connecting and all that stuff could be used by other classes in the future, so it definitely should be implemented in seperate class. But my "main" ftpConnect class already extends one class and could not extend not a single one more. I have no idea how can I resolve this problem. Maybe my ftpConnect class is to complex and I should somehow divide it into couple smaller classes? Any help is much appreciated.

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  • Django database - how to add this column in raw SQL.

    - by alex
    Suppose I have my models set up already. class books(models.Model): title = models.CharField... ISBN = models.Integer... What if I want to add this column to my table? user = models.ForeignKey(User, unique=True) How would I write the raw SQL in my database so that this column works?

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  • What is wrong with my logic in a rails hash?

    - by stevenheidel
    I have a setting in environment/production.rb of HEROKU = true This should change my has_attachment has to use s3 instead of the file system, but it doesn't. What's wrong with my logic? has_attachment :content_type => :image, :storage => ($HEROKU ? :s3 : :file_system), ... Thanks!

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  • Removing an associated object with a link_to to the update action

    - by Numbers
    class Question < ActiveRecord::Base belongs_to :category end class Category < ActiveRecord::Base has_many :questions accepts_nested_attributes_for :questions, allow_destroy: true end CategoriesController: private def category_params params.require(:category).permit(:title, questions_attributes: [:id, :category_id, :title, :_destroy]) end In the view I have a category displaying all it's posts (CategoriesController#show). Each post is deletable. How could I construct a link_to helper that deletes a post by updating the category?

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  • Scala Unit type

    - by portoalet
    I use opencsv to parse csv files, and my code is while( (line = reader.readNext()) != null ) { .... } I got a compiler warning saying: comparing values of types Unit and Null using `!=' will always yield true [warn] while( (aLine = reader.readNext()) != null ) { How should I do the while loop?

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  • how to do the each funtion for all to check checkboxes

    - by kumar
    I am using this code to check the checkbox is chekced or not.. $('#nextpage').click(function() { var result = $('#Details input[type=checkbox]').attr('checked'); if (result == true) { $("#tabs").tabs('enable', 3).tabs('select', 3); } else { $().ShowDialog('please select atleast one'); } }); using this I can check only for one checkbox if I need to check for multipe checkboxes in teh Details page how do I need to loop throw? thanks

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  • Persisting dynamically loaded user controls in view state.

    - by User_003
    I am dynamically loading user control in Button Click event, since these user controls are dynamically loaded I have to recreate all previous user controls as well per click. My user control just has two textboxes for now, but I am not able to persist my inputs across postbacks. My ids are same everytime. I have enableViewstate ="true" in all controls all up to page level. Please adivce.

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  • C++ Class Construction and Member Initialization

    - by anachoret
    The first print shows the member value to be false, and the other two prints show it as true. Why does the first output differ from the last two? #include #include using namespace std; class MyClass { public: bool value; bool stuff; }; class Container { public: vector my_classes; Container() { MyClass c; cout

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  • Can i get RSpec to generate specs with expect syntax?

    - by papirtiger
    When generating specs with : rails g controller Home index A spec is generated with the older object.should syntax require 'spec_helper' describe HomeController do describe "GET 'index'" do it "returns http success" do get 'index' response.should be_success end end end Is it possible to configure the generator to use the expect syntax instead? Desired output: require 'spec_helper' describe HomeController do describe "GET 'index'" do it "returns http success" do get 'index' expect(response).to be_success end end end in config/application.rb: config.generators do |g| g.test_framework :rspec, fixture: true g.fixture_replacement :factory_girl, dir: 'spec/factories' g.view_specs false g.stylesheets = false g.javascripts = false end

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  • Does grails support logging from the src/java classes?

    - by rainyday
    I have a grails app (v 1.1.2) the logging is working fine from the groovy classes, but I can't get it to work from within a java source... I have a class in package com.mforms.devices., it imports apache log4j, defines the logger as follows private final org.apache.log4j.Logger loggy = Logger.getLogger(this.getClass()); then refer to it later by doing loggy.error("...") my Config.groovy has the following log4j = { error 'com.mforms' root { error 'stdout', 'file' additivity = true } } What am I doing wrong?!?!

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