FB Raycaster

[rdc]

I thought I would compare the C++ raycaster on Lode's site to the same prog in FB and I was actually surprised. The FB version is smaller than the C++ version. So much for thinking that the C++ version would be smaller. Here are the files in case you want to look at them. This is a straight conversion from the C code.

Pics:





Source file:

http://www.file-pasta.com/file/fbcaster.zip

[Shockwave]

The FB compiler is surprisingly efficient Rick.

Thanks for the link to the raycaster source too. This is a routine I have never ever written in my life, thought I have seen a few.

[Jim]

The fb compiler is good, but I also would think most C++ compilers would be able to beat it.

There could be two reasons for the code size difference.  One is that the C++ version is using SDL for its graphics library which is huge where the fb one is using fbgfx.bi which is tiny.  The second is what compiler options were used - fb doesn't really have many options so you get what you're given, but gcc and other C++ compilers have hundreds, including optimising for speed instead of optimising for size, removing debugging symbols, etc.

Was the C++ code compiled by you Rick - did you used Codeblocks?

<edit>Do they run about the same speed?  I suspect they do.

Jim

[rdc]

I did compile the code. I have Codeblocks setup to use GCC and I used whatever settings they already had in there, so I am sure that there are switches that could improve the C++ size.

The C++ version is a tad faster, probably due to the buffer updates. I am using just a for-next for the buffer update in the FB code. I am sure putting the screen code inline with the raycast would probably speed things up considerably.

[Clyde]

Ive tried the fb version, and it utterly rocks rdc.
memories flooding back of Wolfenstein.

Nice one.
Clyde.

[rdc]

Yeah, me too. It would be fun to make a look-a-like.

[antarman]

All links is dead! 

[Moroboshisan]

All links is dead! 

original sources still lives http://www.student.kuleuven.be/~m0216922/CG/index.html... You'll find the FB conversion by rdc attached here (src & bin).

Cheers.

[antarman]

Thank you! 

[Moroboshisan]

Thank you! 

you're welcome! ;-)

just my 2 cents... ^_^