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if you want to check if both string are the same, do this <Code Omitted>if you want to check the value of s1 and change s2, do this <Code Omitted>

thanks this really helped

The whole problem was the font I installed in my pc, so I have to use another one. But this is working for me. <Code Omitted>Thanks for the help, everyone.

Stars class can be simplified to this: <Code Omitted>

The more actors you have, the slower your scenario will get, yes. In the case of Game of Life, there should be life in a cell or not. So there shouldn’t be more than one actor in a cell. However, you don’t need to use actors for the cells. Since each actor is only a boolean representation (or 0 and 1) showing with an image, you can also have an array in your world and draw the world background based on the 0’s and 1’s in the array.

you can do two things : 1 : getImage().setTransparency(0); this will just make the image opacity to 0 2 : setImage((GreenfootImage)null); this will set a null image, completely blank

Sounds like you are trying to construct your world. That is, place the initial actors into your world. That would be coded in your World subclass, either in the constructor method or in a method called from that constructor (usually called prepare).

Thanks a lot!

Thank you this helped a lot.

thank you

Not enough information. Provide attempted program code and also details on how you tried to manually set the image.

You do not need smooth mover support on actors that only move up, down, left and right. Add any one additional direction and you may have a reason to use it.

You can use switch on char value in this way: <Code Omitted>

To be unobstructed, the ray is limited to only touch the two actors. It definitely must be less than or equal to two to be truthfully unobstructed. Whether the value used is two or zero is determined by the types of the two actors. If they are of "intersecting" type checked for, use 2. If only one of the two actors is of that type, use 1. If neither is on that type, use 0.