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Wherever you have this line: <Code Omitted>Then you can remove everything related to the sound from the Gameover class.

You can post your relevant code and maybe we can help.

Yes, I only asked because this would be a mistake. ^^ No problem!

There is a difference between 'class' and 'object'. An object is an instance of a class. In the code at the bottom, you create an object of class 'Back' and so on. If you click an (or the) object of the class 'RedTile', you try to remove the 'objects' which you created below. You can not say "remove this class". To delete an object, you need a reference to it or you can delete every instance of the class. This probably solves the problem, too, if you don't need to separate between different e.g. BlueTiles in your world. So either use this

I m doing a small simulation of aquarium this is my 1st program in green foot I hav not return soo much big code .I hav given only 2 function for fish move(), turn() ..kk Now u can tel me the code to create aquarium . In that I want to create different fish which can move and they should not clash with each other . And when the fish reaches at the worlds end the fish should turn at any angle this is the thing I want from u.....

Thank you for your help !

There are several ways: (1) use 'getBackground().drawString("xxxxxx", 20, 30);'; you may have to change the drawing color of the background image before drawing the string; also, you may want to alter the drawing Font (2) create a text GreenfootImage using the constructor that requires a string and then use 'getBackground().drawImage(textImage, 20, 10);' to add it to the background image (3) create a text GreenfootImage as in (2) above and set it to be the image of an actor and add the actor into the world The easiest to remove and the simplest to use is (3). If you have a flat backgrou

in the constructor for key, pass in a String that is either "black" or "white". have the keys set their images using this String. if you do this the rest should sort of fall in place a bit easier. here's something that you could use: public key( string label, (...anything else you/they have) ) { if ( label == "black" ) setImage( the black image); if ( label == "white" ) setImage( the white image ); // anything else. } if it is the key the key is linked to is pressed, it will use the same type of thing: if ( Greenfoot.isKeyDown( key ) { if ( l

It does work, thanks again!

...... Now I feel stupid. Must be the warmth outside. Thanks a lot.

great. thanks for showing a solution and explaining why my attempt wasnt working.

For you first problem, refer to the java tutorial page on Objects (the second section is on declaring a variable to refer to an object. For you second problem, the page on 'this' keyword is what you need to refer to. It would be best to remove the 'other' object before removing 'this' object from the world.

ok i tested it it is faster with your methode thanks alot

ok thx you know a fast methode or algorythm to analies a picture and find special rgbs ??

haha yepp, thats the one, thanks!