Scrolling tile map example (C extension)
Gary Daniels
After experimenting with scrolling tile maps and deciding that I
couldn't meet my requirements with straight Python, I wrote a C
extension to create a vertex array based on numpy tileMap and texCoord
arrays.
it supports flipping, rotating and tinting (with alpha) individual
tiles and I get about 600fps while scrolling under Linux (8600 GT
video).
The source code is available at:
http://www.koltois.com/2011/12/09/tilemap-test-source-code/
My requirements included unlimited map size, animated tiles, on-the-
fly tinting, etc. and I couldn't get it to work at a decent speed with
Python or even Cython. The rest of the project I am working on is all
Python with Pyglet.
The way it's done also easily supports animated tiles (change the
tileMap ID in the array), but the above code does not implement it.
This code was hacked out of a larger project and is a bit messy and
probably not optimal, but I'm definitely open to suggestions for
improvements.
anatoly techtonik
Gary Daniels
It will be useful as an drop-in speedup extensions for pyglet. I don't know if it will require inventing a new API in pyglet, though.
I haven't really tested it enough to submit it for anything official. I posted it mainly as a working starting point for those who might need fast scrolling. As a complete OpenGL newb, I had considerable trouble piecing together the theories and suggestions on the mailing list and from Google searches to get working code.
Alejandro Castellanos
error:
tileC.c:4:31: fatal error: numpy/arrayobject.h: No such file or
directory
compilation terminated
I do have numpy on my system, so I other than that I dunno what I'm
doing wrong; maybe the wrong command in setup tools?
On 12 dic, 07:12, Gary Daniels <wif...@gmail.com> wrote:
Anonymouse
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Gary Daniels
You probably already have the files and just need to change the include to point to them. For me, they were in:
C:\Python26\Lib\site-packages\numpy\core\include\numpy
For temporary testing, you could just copy that whole "numpy" folder to to "tileC" folder.
A previous post on that blog has an already compiled example packed in to a single exe that you can download. It also implements animation and multiple layers.
Christoph Gohlke
In setup.py, try `import numpy` and use
library_dirs = ['/usr/local/lib', numpy.get_include()],
Using Visual C compiler, the OpenGL library is 'opengl32' and
'windows.h' needs to be included before 'GL/gl.h' (in tileC.c). MSVC
doesn't know `0b00000001` constants; change them to decimal values.
Christoph
Gary Daniels
Did you get it to compile and work under Windows with vc?
I tried to build it with vc but get error messages about files missing and I ran out of patience tracking them down.
It works fine for me using MinGW and gcc.
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Ryexander
the paths to find my local files properly but it's a pain. you may
want to fix that.
On Dec 14, 4:46 pm, Gary Daniels <wif...@gmail.com> wrote:
> Did you get it to compile and work under Windows with vc?
>
> I tried to build it with vc but get error messages about files missing and
> I ran out of patience tracking them down.
>
> It works fine for me using MinGW and gcc.
>
> On Mon, Dec 12, 2011 at 11:18 AM, Christoph Gohlke <cjgoh...@gmail.com>wrote:
>
>
>
>
>
>
>
> > On 12/12/2011 7:35 AM, Alejandro Castellanos wrote:
>
> >> I keep trying to build tileC with setup tools but it gives me an
> >> error:
>
> >> tileC.c:4:31: fatal error: numpy/arrayobject.h: No such file or
> >> directory
> >> compilation terminated
>
> >> I do have numpy on my system, so I other than that I dunno what I'm
> >> doing wrong; maybe the wrong command in setup tools?
>
> >> On 12 dic, 07:12, Gary Daniels<wif...@gmail.com> wrote:
>
> >>> On Mon, Dec 12, 2011 at 3:56 AM, anatoly techtonik<techto...@gmail.com>*
> >>> *wrote:
>
> >>> It will be useful as an drop-in speedup extensions for pyglet. I don't
> >>>> know if it will require inventing a new API in pyglet, though.
>
> >>> I haven't really tested it enough to submit it for anything official. I
> >>> posted it mainly as a working starting point for those who might need
> >>> fast
> >>> scrolling. As a complete OpenGL newb, I had considerable trouble piecing
> >>> together the theories and suggestions on the mailing list and from Google
> >>> searches to get working code.
>
> > In setup.py, try `import numpy` and use
>
> > library_dirs = ['/usr/local/lib', numpy.get_include()],
>
> > Using Visual C compiler, the OpenGL library is 'opengl32' and 'windows.h'
> > needs to be included before 'GL/gl.h' (in tileC.c). MSVC doesn't know
> > `0b00000001` constants; change them to decimal values.
>
> > Christoph
>
> > --
> > You received this message because you are subscribed to the Google Groups
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> > .
Gary Daniels
I was hoping someone that got it to compile with VC would post the changes needed to make it work. I get error messages about compiler-specific files missing, like "vcvarsall" I think it was. I don't use VC and gave up trying to figure it out since it works fine with gcc.
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Christoph Gohlke
The "vcvarsall" error indicates that you don't have the correct version of Visual Studio installed. Instead of Visual Studio 2008 Pro, the default compiler for Python 2.6-3.2, you can try to use the "Microsoft Windows SDK for Windows 7 and .NET Framework 3.5 SP1" as described at <http://wiki.cython.org/64BitCythonExtensionsOnWindows>
Christoph
Gary Daniels
Ok, I didn't know if those were general tips or you actually got it to compile.
I still only have Windows XP and bandwidth-limited Internet, so I guess I'll leave it to the user to read your tips and figure it out for their system for now.
Thanks.