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thanks i realised what your saying and when i inverted the up and down cordenets (from - to + and visa versa) and it worked!!! Thanks Thomas

What ideas do you have about how (what have you tried)?

Try this for the Yellow_Crushed class: <Code Omitted>and this for the display2 method:

You have the following line near the top of the class code: <Code Omitted>You can give it an initial value -- maybe something like: <Code Omitted>

I do not see anything that would cause the scenario to "freeze" as you suggest. I do, however see something that could (potentially) cause a lagging issue (if you happen to have lots of little CPU time-wasting code as shown here). You are creating your images every act cycle (see animateShot method). You can create them once when you declare the fields, replacing line 15 with:

thanks

You could add a 'Greenfoot.delay(600);' between lines 3 and 4 if you want to delay the whole scenario. If not, you need to set a timer and let it run for those 10 seconds and set the new world when it reached 0.

It should be at the top of the class outside any methods.

When you call the 'makeLevel' method from the constructor of the 'Space' class, score will always be 0.

Please refer to my Scrolling Tutorial scenario.

I do not suspect that addScore would be called from any of the classes given. At any rate, there is a more general issue here in that once you leave the Space world, the counter object it created goes with it. However, I do not see a need for a counter that causes a world change upon each increment of its value -- that is, you can just change worlds (it should be obvious which world to proceed to determined by which world is currently active).

To test for equality, use the conditional operator '=='. Line 22 above should be <Code Omitted>I said supposedly because I do not see where a win field is declared within the class.

thanks that works great

thank you so much, now it works!!