Discussions

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!!

Basically, you need to differentiate between objects which scroll, objects which should be fixed on the screen (for example score displays) and the object which causes the scrolling. When you add an object to the world, you add it to a scrolling or non-scrolling list. Whenever the object which is causing the scrolling reaches a certain point on the x-axis, you move all objects in the scrolling-list (and the object itself) to the side. You could look at this scenario from danpost: http://www.greenfoot.org/scenarios/19020

Interesting, but I think it is something else than my question that is the problem. That is, I answered my own question, I think.

Thanks for the help! I'm new to this so I have no idea what I'm doing.

Please upload your code here to the site or post relevant code here in the discussion. To see if there is a wall next to you, locate where the ghost is in the world's array and check the "neighbors".

Use the 'Math.hypot' method (Pythagoras) to check the distances if you moved to the direction. So use the player's location and the current location of the enemy ± some x/y value depending on the direction you check.

Option 1: <Code Omitted> <Code Omitted> Option 2: