Comments on: SDL Collision

By: Doug

Doug — Sun, 24 Jan 2010 15:50:53 +0000

For some reason, when I compile and run it, the exit button has no effect – it doesn’t respond and nothing displays on the screen. It was working but now I can’t figure out why not.
I’ve checked out all the event-related files, and everything seems to be in order, and I have the same problem even when I use the code copied and pasted directly from this page.
Any ideas?

By: Tim Jones

Tim Jones — Mon, 04 Jan 2010 12:46:43 +0000

Nick,
Take a look here: http://www.libsdl.org/cgi/docwiki.cgi/FAQ_Console

Luke,
Take a look at the PosValid and PosValidTile, those are likely the problem areas. Check against the zip files also, not just the code on this post.

By: luke

luke — Wed, 23 Dec 2009 05:07:19 +0000

i have everything working except the collision of the player and the map, the players just fall and i checked the map and the tiles were 2 which are blocks and i have been checking my code to yours for a while now and would like to know if anyone could help but i will continue the search, Thank You for the Tutroials they rock ( i know that you probly wont read this cause it was posted a while ago

By: Nick Coad

Nick Coad — Sun, 08 Nov 2009 23:58:43 +0000

Never mind my last comment – I got it sorted. Is there a way to stop “printf” outputting to a file? I have a bunch of printf statements in case something goes wrong, to help me track what the code is doing. Unfortunately that means stdout.txt gets very large after just a few seconds of running. Any way I can turn off output without removing the printfs?

By: Nick Coad

Nick Coad — Fri, 06 Nov 2009 01:29:27 +0000

For some reason my version of this is getting suck in the for loop in CMap :: OnRender(). I have even tried copy + pasting that particular loop from your sample code and it still just gets stuck. My MAP_WIDTH and MAP_HEIGHT are both 40, and TILE_SIZE is 16 if that matters.

I just can’t figure it out, it just gets stuck looping over and over!

By: Bob

Bob — Tue, 03 Nov 2009 04:57:50 +0000

Great tutorial, but as Kitt pointed out, when explaining about cfps, you switch the words second and loop.
Got a little confused for a momemnt before i read the comments.

Also, capping the speedfactor might be an easy fix to prevent the drag/fall bug.

The line..

if(SpeedFactor > 30)SpeedFactor=30;

..Did the trick for me.

Otherwise a great tutorial!

By: Bob

Bob — Tue, 03 Nov 2009 04:56:06 +0000

Also, capping the speedfactor might be an easy fix to prevent the drag/fall bug.

The line..

if(SpeedFactor > 30)SpeedFactor=30;

..Did the trick for me.

By: Bob Baluba

Bob Baluba — Mon, 02 Nov 2009 02:30:12 +0000

Great tutorial, but as Kitt pointed out, when explaining about cfps, you switch the words second and loop.
Got a little confused for a momemnt before i read the comments.

Otherwise a great tutorial!

By: Tim Jones

Tim Jones — Mon, 19 Oct 2009 01:18:58 +0000

Ben,
Thanks! I like that idea, so I did go ahead and put a Donate button below the social networking links and above the comments. I appreciate all the help I can get – but I don’t do this for the money at all. Just glad I can help people out.

By: Ben

Ben — Mon, 19 Oct 2009 00:05:59 +0000

Great tutorials.

Thanks so much for taking the time to write them. You should put one of those donation buttons on your site.. something like… if you found this article helpful and wish to thank me click here to paypal me $1… flicks user over to paypal login, enter user/pass and bume back to the site. Maybe make it so they can set a higher value if they want to.

I’m not exactly a wealthy person but I’d flick you a few bucks for your efforts and great example here. A few thousand people like me come along and this site will have been well worth your time for you as well as all of us.