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added on the 2008-07-20 22:03:14 by Gʀɪʍʍy  |
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comments
Great
Thank you Optimus for your comment.
About the tunnel effect, all is done in C. The only ASM code here is the rectangle rasterization.
This is the source-code of the squared tunnel effect's main loop :
If you want to know more about source-code, you can get the whole C framework I created for the demo, as also the demo itself. In a way, this is the first open-source CPC demo ;)
This is the Subversion repository :
https://crocolib.svn.sourceforge.net/svnroot/crocolib/trunk
Finally, thank you for your comments ! Let's say I'm waiting your next production now :-) and don't rush it hehe!
About the tunnel effect, all is done in C. The only ASM code here is the rectangle rasterization.
This is the source-code of the squared tunnel effect's main loop :
Code:
for ( iSquare = 0; iSquare < SQUARECOUNT - 1; iSquare++ )
{
if ( s_sizes[ iSquare ] > 1 )
{
{
addX = s_cosX[ s_iSinX ];
addY = s_cosY[ s_iSinY ];
X1 = s_sizeX1[ iSquare ] + addX;
Y1 = s_sizeY1[ iSquare ] + addY;
X2 = s_sizeX2[ iSquare ] + addX;
Y2 = s_sizeY2[ iSquare ] + addY;
}
{
s_iSinX += TUNNEL_CURVEX;
if ( s_iSinX >= MAXSINCOS )
{
s_iSinX -= MAXSINCOS;
}
s_iSinY += TUNNEL_CURVEY;
if ( s_iSinY >= MAXSINCOS )
{
s_iSinY -= MAXSINCOS;
}
}
{
if ( X1 < s_prevX1 )
{
X1 = s_prevX1;
}
if ( X1 > s_prevX2 )
{
X1 = s_prevX2;
}
if ( X2 < s_prevX1 )
{
X2 = s_prevX1;
}
if ( X2 > s_prevX2 )
{
X2 = s_prevX2;
}
if ( Y1 < s_prevY1 )
{
Y1 = s_prevY1;
}
if ( Y1 > s_prevY2 )
{
Y1 = s_prevY2;
}
if ( Y2 < s_prevY1 )
{
Y2 = s_prevY1;
}
if ( Y2 > s_prevY2 )
{
Y2 = s_prevY2;
}
}
{
if ( Y1 > Y2 )
{
s_tempValue = Y2;
Y1 = Y2;
Y2 = s_tempValue;
}
if ( X1 > X2 )
{
s_tempValue = X2;
X1 = X2;
X2 = s_tempValue;
}
}
s_pen = s_pens[ iSquare ];
if ( s_prevX2 > s_prevX1 )
{
width = s_prevX2 - s_prevX1;
if ( Y1 > s_prevY1 )
{
crGFXDrawRectFast( s_scanlineBuffer + s_prevY1, s_prevX1 + width, width, Y1 - s_prevY1, s_pen );
}
if ( s_prevY2 > Y2 )
{
crGFXDrawRectFast( s_scanlineBuffer + Y2, s_prevX1 + width, width, s_prevY2 - Y2, s_pen );
}
}
if ( Y2 > Y1 )
{
if ( X1 > s_prevX1 )
{
width = X1 - s_prevX1;
crGFXDrawRectFast( s_scanlineBuffer + Y1, s_prevX1 + width, width, Y2 - Y1, s_pen );
}
if ( s_prevX2 > X2 )
{
width = s_prevX2 - X2;
crGFXDrawRectFast( s_scanlineBuffer + Y1, X2 + width, width, Y2 - Y1, s_pen );
}
}
s_prevX1 = X1;
s_prevY1 = Y1;
s_prevX2 = X2;
s_prevY2 = Y2;
}
}
If you want to know more about source-code, you can get the whole C framework I created for the demo, as also the demo itself. In a way, this is the first open-source CPC demo ;)
This is the Subversion repository :
https://crocolib.svn.sourceforge.net/svnroot/crocolib/trunk
Finally, thank you for your comments ! Let's say I'm waiting your next production now :-) and don't rush it hehe!
(sorry for huge code sample!)
video http://fr.youtube.com/watch?v=HIaVST3ycCY
It's interesting but what about memory? Will at least be easy to know which portion of memory the C code and data occupies? Because it's CPC and memory is already limited. I have tried the Z88 compiler on CPC already but abandoned it because I thought 1) it would take some time to get used (although I know C) 2) Maybe in the middle in the project C would eat so much memory that I won't be able to use any more.
great
Cool "vieuxcons" stuff :)
@Optimus : more information about C on CPC here : http://arnaud.storq.googlepages.com/cforamstradcpc
Expect a x2 / x3 size versus ASM, but it packs very well.
1) Yes it takes times to be used to z88dk.
2) Each parts are unpacked at run-time so memory is not a problem here
And as a general rule : experiment by yourself ! Dont stop work because of presumptions or people without knowledge ! :o)
Expect a x2 / x3 size versus ASM, but it packs very well.
1) Yes it takes times to be used to z88dk.
2) Each parts are unpacked at run-time so memory is not a problem here
And as a general rule : experiment by yourself ! Dont stop work because of presumptions or people without knowledge ! :o)
Thanks. It's getting interesting. I would be motivated to code a little demo or game framework to experiment (even though our next demo as we plan it will be in asm as usual because I will spent a lot of vram and have tiny pieces of soft code and hw tricks there and code would be delicate)
It's really sad, that it don't work on an amstrad old :(
But, nice come back ! I'm looking forward other demos of this kind
But, nice come back ! I'm looking forward other demos of this kind
Not bad. Finally blocky effecs also for CPC.
To bad it doesn use any specific features except for the pictures...
To bad it doesn use any specific features except for the pictures...
Nice stuff Norecess!
yep
stylish, and great piccy. but the charmode effects are very very basic. why not use some ditherpatterns?
Nice performance for C.
I wish the C compiler we have on the Oric was as good.
I wish the C compiler we have on the Oric was as good.
Nice !
imo, this was the first serious demo of NoRecess... It's good try for a comeback!
wow
Some premises to phX ?
Gotta love this!
Cool, FAT demo!
Unfortunataly some coder colors here and un-touched, directly converted gfx (yes, coder admited that fact). But still, a very good stuff!
Unfortunataly some coder colors here and un-touched, directly converted gfx (yes, coder admited that fact). But still, a very good stuff!
submit changes
if this prod is a fake, some info is false or the download link is broken,
do not post about it in the comments, it will get lost.
instead, click here !
When I have read that it's written in C and the screenshot didn't said much I thought it would suck. But it has so much impressed me, more than several assembly coded CPC demos before. I thought at best there would be just good design with gfx, but there were effects. Maybe not the optimal asm could reach but there were many of them in 8*8 blocks that were smooth enough, transitions with blocks, motion captured bob man and some clever writer, cool fades and gfx, great square tunnel effect and an awesome tune all in a package that has really shocked me.
C? Is it btw all C or are there some small assembly routines for rendering a block or a bob gfx element and most of the non trivial in C? I would like to learn more technical info about this demo (how is the square tunnel achieved?)
It's impossible to believe it.