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This is the discussion related to the wiki page Pong.

Min and max

Muhammad Fazl 24 Oct 2014 17:27

what exactly is min and max used for in this game?

Re: Min and max

The Cow 25 Oct 2014 23:22

In this program, Min and max are used to make the value of a number at least 1 and at most 8.

So Max(1,Min(8,~~~→A
first finds and returns the smaller value of 8 or ~~~. So if ~~~ is more than 8, the return value (Let's call it B) is made to be 8 instead.
Likewise, Max returns the larger value of 1 the value B. If B is less than one, the return value is made to be 1, since 1 would be the maximum of the set {1,A}.

Essentially this does the same thing as:

:~~~          ;Some expression
:If Ans<1
:1
:If Ans>8
:8
:Ans→A

Though using less memory, and probably faster.

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Fire Emblem for TI 83/4+ Progress: Demo: 75% Total: 40% Postponed indefinitely

Re: Min and max

Toothless the Dragon 26 Oct 2014 02:02

The Cow might've been a little bit confusing (hopefully not misleading o.o), but I'll tell ya.

The min( command is used to find the lowest number in a list, where the max( command is used the find the highest number in the list. For example, "min({1,2,3})" will give you 1, and "max({1,2,3})" will return 3.

Combining the two essentially makes limits. "min(8,max(1,A→A" makes it so that the lowest A can be is 1, and the highest 8. Note that IT ISN'T "min(1,max(8,A→A" like The Cow posted, because that means if A is greater than 8 like 9, the command would be "min(1,max(8,9))" which would then be "min(1,9)" and return 1, instead of 8.

There's more info on these on the wiki if you want, just search them up. ^.^

Vertical Movement

TIce Cold 31 Aug 2018 14:23

This program does not work properly (I assume). Horizontal movement is fine, but there is not vertical movement, ie no user input is necessary aside from the first placement of the "paddle". I am investigating this as a noob and will attempt to fix it. Feel free to school me and optimise my solution.

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TI CE what you did there

Re: Vertical Movement

Bio_Hazard1282 31 Aug 2018 15:40

The program works perfectly fine. It can ovly only be wrong if there is a syntax/argument/domain error. Check your code again :)

:3→A:4→X
:1→S:1→T
:randInt(1,8→Y
:Repeat K=45 or X=1 and A≠Y
:ClrHome
:Output(A,1,"[
:Output(Y,X,"O
:getKey→K
:max(1,min(8,A+(Ans=34)-(Ans=25→A
:T(Y>1 and Y<8)+(Y=1)-(Y=8→T
:S(X>1 and X<16)+(X=1)-(X=16→S
:X+Ans→X:Y+T→Y
:End
:Pause "Game Over!
:ClrHome:"

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Bio_Hazard1282

Last edited on 31 Aug 2018 15:41 by Bio_Hazard1282 Show more