Author Topic: What is wrong with this code? :(  (Read 12643 times)

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Offline willrandship

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What is wrong with this code? :(
« on: January 11, 2011, 06:40:39 pm »
http://pastebin.com/pR57e81a

This is giving me a headache. It's supposed to give me walls being drawn, getting progressively farther away, being detected off a pic, but It's not showing anything, probably due to a mistake in the formula that I can't find.  :mad: :banghead:

Anyone have any helpful ideas/suggestions? even a completely new formula, I just want it to work.

Offline Michael_Lee

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Re: What is wrong with this code? :(
« Reply #1 on: January 11, 2011, 06:54:01 pm »
I think the main part of your problem is that in this line of code:
Code: [Select]
If {PY*96+PX+(A*96)+GDB1+F}=1
I think you're trying to check bit by bit for the location of a wall, but when you access data using curly braces, it returns the value of the byte.

Also, try closing your parenthesis - leaving them open in Axe can cause issues.

Also, I didn't know that you could use variables created using more then one letter.  Does that really work?
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Offline willrandship

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Re: What is wrong with this code? :(
« Reply #2 on: January 11, 2011, 06:55:56 pm »
In axe it does I think (hope), unless the Pic1xX thing only applies to other variables. maybe that's the issue. I actually changed that = to a >= so it would work that way. I'll try changing it to just X and Y.

Offline Deep Toaster

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Re: What is wrong with this code? :(
« Reply #3 on: January 11, 2011, 06:59:47 pm »
What's PY and PX? If you're trying to do P*Y and P*X, remember that Axe doesn't support implicit multiplication.




Offline willrandship

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Re: What is wrong with this code? :(
« Reply #4 on: January 11, 2011, 07:40:49 pm »
No, I was doing PY as one var and PX as one var. They are the player's coordinates on the pic var.

Offline FinaleTI

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Re: What is wrong with this code? :(
« Reply #5 on: January 11, 2011, 07:58:48 pm »
Try Y instead of PY and X instead of PX. I don't think Axe supports multiple letter variables like it does with static pointers.
« Last Edit: January 11, 2011, 07:58:59 pm by FinaleTI »


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Re: What is wrong with this code? :(
« Reply #6 on: January 11, 2011, 08:00:16 pm »
That only works for static pointers becasue those don't take up any memory.  I only have a limited number of variables because I want to leave users with enough free ram to play around with.  If you need more variables, you can always use these ram locations manually: {L1+10}r for instance will act exactly the same as a regular variable (make that 10 any constant you want as long as it fits in ram)
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Offline willrandship

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Re: What is wrong with this code? :(
« Reply #7 on: January 11, 2011, 08:36:09 pm »
Yeah, I tried with X and Y, no change at all. I also made sure that it was detecting something at one point, by forcing the If function.

Offline Deep Toaster

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Re: What is wrong with this code? :(
« Reply #8 on: January 11, 2011, 09:36:34 pm »
Are you sure you  changed all the PXs and PYs to Xs and Ys?

Also,

Code: (Axe) [Select]
If {Y*96+X+(A*96)+GDB1+F}=1

would be a lot more optimized as

Code: (Axe) [Select]
!If {Y+A*96+X+F+GDB1}-1

Taking out those parentheses in particular helps a lot :)
« Last Edit: January 11, 2011, 09:36:58 pm by Deep Thought »




Offline willrandship

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Re: What is wrong with this code? :(
« Reply #9 on: January 12, 2011, 09:30:50 am »
Umm, those two lines don't do the same thing.

Y+A*96 != Y*96+A*96

I tried it in my calc, no change :( The paste has the old, my calc has yours DT

And yes, I got all the PX's and PYs, they're only referenced in the one line anyways :P

By the way, an updated paste http://pastebin.com/TGSqGSJ8

Offline Deep Toaster

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Re: What is wrong with this code? :(
« Reply #10 on: January 12, 2011, 11:43:38 am »
Umm, those two lines don't do the same thing.

Y+A*96 != Y*96+A*96

It's the same because there's no order of operations in Axe, remember. It goes strictly from left to right.




Offline calcdude84se

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Re: What is wrong with this code? :(
« Reply #11 on: January 12, 2011, 01:15:58 pm »
Deep Thought is right AFAICT.
"Y+A*96" evaluates as "(Y+A)*96", which is the same as "Y*96+(A*96)"
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Offline Munchor

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Re: What is wrong with this code? :(
« Reply #12 on: January 12, 2011, 01:22:27 pm »
XCB doesn't multiply X by C by B?

Shocking news!: That's why many of the games I attempted never worked and kept giving me errors... I never thought it was this part of the code because I assumed it was OK.

Offline calcdude84se

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Re: What is wrong with this code? :(
« Reply #13 on: January 12, 2011, 01:24:52 pm »
Indeed, Axe doesn't have implicit multiplication. In fact, if you have, say, "ABC" in your code, it will evaluate just like C alone would, but more slowly. (Since it loads A, then B, and finally C) ;)
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Offline Munchor

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Re: What is wrong with this code? :(
« Reply #14 on: January 12, 2011, 01:25:32 pm »
Indeed, Axe doesn't have implicit multiplication. In fact, if you have, say, "ABC" in your code, it will evaluate just like C alone would, but more slowly. (Since it loads A, then B, and finally C) ;)

I thought it loaded A. This is where the NSpire Basic wins: multiple character variables.