C/C++ Programming Help Thread

[Devun_06]

Umm... I've heard of the ogg player lib and a couple of other libs out there, but I have no clue where to find them. I've looked at psp-H*cks, here, & and ps2de\/.org* and I don't see anywhere at any place an area for downloading libs... could anyone let me know a place and/or how to find it?

[SodR]

Originally Posted by Devun_06

Umm... I've heard of the ogg player lib and a couple of other libs out there, but I have no clue where to find them. I've looked at psp-H*cks, here, & and ps2de\/.org* and I don't see anywhere at any place an area for downloading libs... could anyone let me know a place and/or how to find it?

Here you go!

[Devun_06]

Thanx SodR, but is there also a way to get a description of what they are before I begin downloading a lot of them I don't need, or am I missing something...
*and how did you findout about this place... *just curious*

[slicer4ever]

is their away i can change the toolchain.sh script to new download places i tried the link and only managed to change 1 so that would work all the rest just said they already had the program but it still didn't work i believe the 1st one works but thats all i got from here anyways

[Paradox.psp]

hmm can anyone explain to me the bitwise operater?

eg: 0110 & 0011
0010

and can someone explain hexadecimal.. it scare's me 0-0

eg:

123 = 7 * 161 + B * 160 = 7B16

btw the 161.. the end 1 is a powerand the 0 on 160 and the 16 at the end :P

[Feldor]

Has anyone toyed with or have examples of pspgl code?

[Devun_06]

Originally Posted by Paradox.psp

hmm can anyone explain to me the bitwise operater?

eg: 0110 & 0011
0010

and can someone explain hexadecimal.. it scare's me 0-0

eg:

123 = 7 * 161 + B * 160 = 7B16

btw the 161.. the end 1 is a powerand the 0 on 160 and the 16 at the end :P

I used this to learn about bits and hex, but I still don't fully get it:
http://www.learn-c.com/data_lines.htm

[Art]

Could someone pls post the file 'lmikmod' ??
I have the six include files that come with the mikmod download package,
but with the line:

LIBS = -lpspaudiolib -lpspaudio -lpspgu -lpsppower -lpng -lz -lm -lpspwlan -lmikmod

in my makefile, cygwin only complains about lmikmod, and it's definately not on my PC.
Cheers, Art.

[SG57]

Art - Try -lmod

Tell me if it works or not.

[Art]

The problem is solved thanx SG57, I had to dl mikmod from svn and install it seperately.
I have been able to compile the example and have it work.
Cheers, Art.

[Psilocybeing]

Originally Posted by Devun_06

I used this to learn about bits and hex, but I still don't fully get it:
http://www.learn-c.com/data_lines.htm

The AND operator compares the bits of each field, and if they are both 1 then it will output a 1.

Here's an example:


0110
0011
||||
|||_0+1=0
||__1+1=1
|___1+0=0;
____0+0=0;

0010


Check out some binary math tutorials, they can come in pretty handy.
Here's something to get you started: http://everything2.com/index.pl?node_id=1365337
It explains 4 math functions in binary(addition, subtraction, multiplication and division).

As far as hex goes, you need to think about it as we think about our usual number system(Decimal). Each column corresponds to a certain value.

Decimal
_1000
| _100
|| _10
||| _1
||||
0010=10

The same goes for Hexadecimal, although the columns have different values, and the fields have more numeric(or alphanumeric) variables.

Hexadecimal
_64
| _32
|| _16
||| _1
||||
111F=(64+32+16+15)=127

The way this works is instead of changing over to the next field upon reaching 10, it will substitute the number with a letter from the alphabet starting at A=10, B=11, C=12 and so on up to F=15. F is the highest possible value in a hexadecimal field. It takes a bit of getting used to, but it's really just shifting your mind to incorporate this extra range of 'numbers' into your usual decimal system

If you want something to show an example of how useful hex is, check out the color codes used to make this site. They are constructed using triplets of hex numbers, as with 2 hex digits we can create numbers as high as 255, where as if we were working with 2 decimal columns the highest number we could achieve with two columns is 99.

RRGGBB
#FF0000

That would equal 255 into the green colour field, giving us a nifty sharp green color.

I hope that clears a few things up

[Art]

The Windows Calculator (in Scientific mode) performs some bitwise operations which
might be good for learning/practice/checking results.

You can also use it to easily perform Hex/Decimal/Binary conversion.
Art.

[SG57]

Originally Posted by Art

The Windows Calculator (in Scientific mode) performs some bitwise operations which
might be good for learning/practice/checking results.

You can also use it to easily perform Hex/Decimal/Binary conversion.
Art.

Does the Windows Calc have ba source? Or even itf it does, itll be in VB?

OFF TOPIC: Any other Develpoers going to update? I def will,just not until i finish all the games and apps i hvae started. It is sooo tempting seeing all the new features. I bet some will do the same but i dunno. I will, just not until I finish all the stuff i started.

[SodR]

Is there any way to use ascii characters in printTextScreen() or something similar wich you can use with Psilocybeing's graphic library since you can't just use the good ol' printf() ??

[Psilocybeing]

The graphic library is not mine, I simply provided example code showing how to use it. I've not started to play with fonts yet, so while it's most likely possible it would take some heavy modification.

[Samstag]

Originally Posted by Psilocybeing

The graphic library is not mine, I simply provided example code showing how to use it. I've not started to play with fonts yet, so while it's most likely possible it would take some heavy modification.

Doh! I keep crediting that to you. Any idea who wrote it originally?

SodR: I'm not sure if I'm understanding your question correctly, but if you want simple font support look here.

[Racer_x124]

Ok what does it mean when the compiler cant find "iostaem.h"(Im on my other computer right now but its close to that)
sorry i just started (as you can tell)

[SodR]

Samstag: Nice tutorial you have there! The thing is I wated to know if there was any way to print out ascii variables with printTextScreen over a picture. If it would work it could have looked something like this:

 printTextScreen( 10, 10, "%s" ,src);

Is there any other way using ascii on a .png picture??

Racer_x124: That is because it is called iostream.h not iostaem.h

[Samstag]

Originally Posted by SodR

Samstag: Nice tutorial you have there! The thing is I wated to know if there was any way to print out ascii variables with printTextScreen over a picture. If it would work it could have looked something like this:

 printTextScreen( 10, 10, "%s" ,src);

Is there any other way using ascii on a .png picture??

If you wanted to put text over an image using my routines, it would look something like this:

text_to_image("Text to print", my_image, x, y);

[SodR]

Originally Posted by Samstag

If you wanted to put text over an image using my routines, it would look something like this:

text_to_image("Text to print", my_image, x, y);

But I can't still use ascii with that...

[Samstag]

That's where you've lost me. What exactly do you mean by "ascii"?

[SodR]

Originally Posted by Samstag

That's where you've lost me. What exactly do you mean by "ascii"?

Ascii

[Samstag]

Uh, my font library fully supports ascii. Maybe you need to rephrase your question or show an example of what you're trying to do. You do realize ascii is text, and text is just an array of characters?

[SodR]

Originally Posted by Samstag

Uh, my font library fully supports ascii. Maybe you need to rephrase your question or show an example of what you're trying to do. You do realize ascii is text, and text is just an array of characters?

Didn't this describe what I wanted to to pretty good?

Originally Posted by SodR

 printTextScreen( 10, 10, "%s" ,src);

The thing was that I didn't understod that your lib worked with ascii. But now I know, thanks!

btw. Why would I want to know how to use ascii on an image if I didn't know what ascii actually is??

I need to use ascii so I can display what file I'm dumping in my UMD Dumper function in UMD Tool (see sig).

[Psilocybeing]

Originally Posted by Samstag

Doh! I keep crediting that to you. Any idea who wrote it originally?here.

I really have no idea, I found it a few months ago when I started coding on the PSP and I can't for the life of me remember where I got it from. It must be a piece of homebrew that is at least 5-6 months old though. I'll do some digging.

edit: also, have you got a link to your font lib please Samstag? it could come in very handy for Traveller, as the font used in graphics.h cannot be changed easily in size or style. cheers
edit2: nevermind, I found it

[Samstag]

Originally Posted by SodR

Didn't this describe what I wanted to to pretty good?



The thing was that I didn't understod that your lib worked with ascii. But now I know, thanks!

btw. Why would I want to know how to use ascii on an image if I didn't know what ascii actually is??

I need to use ascii so I can display what file I'm dumping in my UMD Dumper function in UMD Tool (see sig).

Sorry I think it was my misunderstanding. I thought it would be obvious that it supported ascii so I thought you didn't understand what ascii really was. Look at the flibtest.c file and you'll see how easy it is to use.

[SodR]

Samstag: When I try to compile with your lib I always get this error:

 
flib.h:27: error: syntax error before 'color'
flib.h:33: error: syntax error before 'Image'

What is wrong? I haven't even touched flib.h...

[Samstag]

Originally Posted by SodR

Samstag: When I try to compile with your lib I always get this error:

 
flib.h:27: error: syntax error before 'color'
flib.h:33: error: syntax error before 'Image'

What is wrong? I haven't even touched flib.h...

I see the problem. In your code you have to put #include "graphics.h" before #include "flib.h" or you'll get that error. Or you can put "#include graphics.h" in flib.h anywhere before line 27.

Thanks for the feedback. I'll fix that in the next release.

EDIT: Psilocybeing: It looks like that code is from an earlier version of Luaplayer.

[Art]

OFF TOPIC: Any other Develpoers going to update? I def will,just not until i finish all the games and apps i hvae started. It is sooo tempting seeing all the new features. I bet some will do the same but i dunno. I will, just not until I finish all the stuff i started.

Sorry to butt in, but what new features?
I backed up the whole op system with cygwin installed, so it shouldn't be a problem
going back to the current installation.

[SG57]

Yea, I too want to know the features. Plus, is your font lib need installing, or is it just like the graphics.h/.c and its just an extra, no need to make or make install.

Now I justneed a decent rotating prototype!

PLEASE, someone please make/help me with rotation. I need to rotate an image via angles.

I have tried and failed 3 times. Ive been trying to make it rotate by even the smalledst angle change. 1 degree, etc. Please help since I need to rotate a 'cursor'. Thanks.