Author Topic: Undocumented TI-BASIC tricks (Read 84176 times)

tifreak · « **Reply #75 on:** December 29, 2005, 02:45:00 am »

Like I said in my earlier post, that can actually slow the game down, if you use a lot of them, since it has to do all the calculations every loop...

dysfunction · « **Reply #76 on:** December 29, 2005, 12:54:00 pm »

Yeah I tried to optimize my TBS engine with those, and it ended up running at almost exactly the same speed. Booleans are faster than If:Then only if you don't have extremely complicated movement routines.

Radical Pi · « **Reply #77 on:** December 29, 2005, 01:03:00 pm »

Yes, I meant exactly that.
I don't think my games are slowed by it that much, I only use it for moving left/right/up/down.

tenniskid493 · « **Reply #78 on:** December 29, 2005, 03:53:00 pm »

Ok, good. I had to try to guess at what you meant. I have a few of those in my game but, like tifreak8x said, if you use to many of them, they can do more harm than good.

dysfunction · « **Reply #79 on:** December 29, 2005, 07:50:00 pm »

I would love for an assembly coder to go in CalcSys or a debugger and see exactly how many clock cycles each of these commands takes and make a table, then we could just add up the cpu time required by each command in a routine to see which is faster.

dragon__lance · « **Reply #80 on:** December 30, 2005, 04:52:00 am »

y don't we ask that over at MC forums, maybe one of those asm gurus will do it?

dysfunction · « **Reply #81 on:** December 30, 2005, 07:21:00 am »

Good idea, I think I will!

dragon__lance · « **Reply #82 on:** January 04, 2006, 02:31:00 pm »

ok, today in math class, had a lot of time so did some testing on speed of stuff.here's wat i got
-(everyone except me probably knew this, but ANS work faster than the number)
-Using the real number instead of variable works faster, real(0 will work faster than real(A

tenniskid493 · « **Reply #83 on:** January 04, 2006, 02:35:00 pm »

Sweet. I never knew about the Ans thing. For the number faster than variable, it makes sense. Instead of having to search the VAT for the variable to get the value, it has the value provided for it immediately. Still good to know though.

tifreak · « **Reply #84 on:** January 04, 2006, 02:45:00 pm »

Using ans is alright, but if you are doing any other equations, ans will be messed up.

Basically, ans is good for simple things (I use it for a program that has multiple routines, I just store the number to ans, call the program, then the first line in the program is Ans->L

That makes things a little smaller and faster...

necro · « **Reply #85 on:** January 04, 2006, 03:36:00 pm »

trick to test if xlib is installed

1
real(0
not(Ans
If Ans:Pause "Install Xlib!
If Ans:Return

kalan_vod · « **Reply #86 on:** January 04, 2006, 03:45:00 pm »

QuoteBegin-necro+4 January 2006, 21:36-->

QUOTE (necro @ 4 January 2006, 21:36)

trick to test if xlib is installed

1
real(0
not(Ans
If Ans:Pause "Install Xlib!
If Ans:Return

If you want to save a byte do

c1

-->

CODE

ec11
real(0
If not(Ans:Pause "Install Xlib!
If not(Ans:Returnc2

ec2
Doesn't save much but hey 1 byte is a byte!

tifreak · « **Reply #87 on:** January 04, 2006, 04:02:00 pm »

Check the code, it produces different results. Necro's produces 1, where yours produces 0.

kalan_vod · « **Reply #88 on:** January 04, 2006, 04:05:00 pm »

QuoteBegin-tifreak8x+4 January 2006, 22:02-->

QUOTE (tifreak8x @ 4 January 2006, 22:02)

Check the code, it produces different results. Necro's produces 1, where yours produces 0.

Yes but it has the same effect....

necro · « **Reply #89 on:** January 04, 2006, 04:21:00 pm »

yes, you unrapped a line break and as such, "not(...:not(..." is better than an "not(Ans:"...if I had a third line of conditionals in there, it would be better my way though

Author Topic: Undocumented TI-BASIC tricks (Read 84176 times)

dysfunction

tenniskid493

dysfunction

dragon__lance

dysfunction

dragon__lance

tenniskid493