Ha beírom a program elejére, hogy
240   STRING *3 I$,
az nem tetszik neki.
Ha a DEF-en belülre írom be, hogy
4755   STRING *3 I$,
az sem tetszik neki.

Próbáld
240 STRING I$(0 to 8)*3vagy

4755 STRING I$(0 to 7)*3
"A karaktersorozat típusú változókat deklarálja, alapértelmezésben 132 karakter max. hosszúságot megadva."

Ez a megoldás a leglassabb amúgy. több mint 50%-kal.

Messages has empty horisontal lines (didn't notice when they appeared).

I think the source of the problem of the garbage problem, since the message text is XORed to the screen for display and disappear also, i just checked your demo snapshots, and thx, i think they will give a very good chance to find the main problem. I think you played less than me, and i even found and corrected some problems, but i have never met with the problems you found , except the player disappear at the bottom and appear on the top (which i did not thought as a problem )

Oh. You also can jump off while plane is not on the screen.

Coool, i have never tried it
I will check it also, you are the best tester, i thought that everything is good, but you check things what i would never think about
Thank you very much

Thank you very much, i will check the garbage how can occure, now i can not imagine how it happens
Player appears on the top after disappearing on the bottom i saw, i do not think is an issue

Az ilyen függvényváltozó sztringeknek (vagy nem tudom, hogyan nevezik ezeket) a maximális hosszát nem lehet meghatározni?

4750 DEF I$(X)
 4760   LET I$=CHR$(27)&"I"&CHR$(X)
 4770 END DEF
Ha beírom a program elejére, hogy
240   STRING *3 I$,
az nem tetszik neki.
Ha a DEF-en belülre írom be, hogy
4755   STRING *3 I$,
az sem tetszik neki.