Question about score

[Jack Zero]

Is there a way to apply an if/then statement to score without breaking into assembly? For example subtracting 50 from the score only if it is currently > 50. I don't want losing a ship right away to cause a record score of 999950...

 

IF SCORE > 50 THEN SCORE = SCORE - 50 doesn't seem to work. Any ideas?

[+batari]

Is there a way to apply an if/then statement to score without breaking into assembly?  For example subtracting 50 from the score only if it is currently > 50.  I don't want losing a ship right away to cause a record score of 999950...

 

IF SCORE > 50 THEN SCORE = SCORE - 50 doesn't seem to work.  Any ideas?

978570[/snapback]

Arithmetic with the score is a special case for the compiler since the score is 3 BCD bytes. If you use "score" in an if-then like that, you will just get the first two digits in BCD. So one way to do what you want might be:

 

score=score-50:if score=$99 then score=0

 

I haven't tested it, but I think it will work.

[Cybergoth]

Hi there!

 

Just a short sidenote from a "Game Design" point of view: Decreasing the score in a game usually sucks.

 

Greetings,

Manuel

[Jack Zero]

Arithmetic with the score is a special case for the compiler since the score is 3 BCD bytes.  If you use "score" in an if-then like that, you will just get the first two digits in BCD.  So one way to do what you want might be:

 

  score=score-50:if score=$99 then score=0

 

I haven't tested it, but I think it will work.

978583[/snapback]

 

Yes! Just tried that and it works good.

 

From a game design standpoint, losing score points != pleasant.. This is more of a See If I Can Do It project than anything else. Something impossible before Batari Basic..

 

(and if it ends up nice maybe I'll have a cart made for myself)