|
|
|
| Raycasting problems |
|
23yrold3yrold
Member #1,134
March 2001
 |
Just populate your dungeon with giant cube slimes, Z -- |
|
aybabtu
Member #2,891
November 2002
|
I'm gonna work on drawing objects soon. I can't get the engine to run much faster, so I'm gonna move on. Should be pretty easy. Just use the distances in the view[] variable, and compare it's distance...I think. |
|
Thomas Harte
Member #33
April 2000
 |
Yeah. And in my portal engine you only need consider objects which overlap with sectors that were actually visited, so you usually end up considering less objects than a ray caster! [My site] [Tetrominoes] |
|
aybabtu
Member #2,891
November 2002
|
Thomas Harte: Can you attach a binary of your portal engine? I can't get it to compile with my version of allegro (3.11...bleh!) and DJGPP... |
|
Thomas Harte
Member #33
April 2000
|
Oh, yeah, I'm going to get on top of that as soon as I get a working DJGPP install. Or are you happy with a Windows binary? [My site] [Tetrominoes] |
|
aybabtu
Member #2,891
November 2002
|
A windows binary is fine...but I'd prefer a DOS one, because sometimes I can't get the windows ones to work even on 98SE! |
|
Karel
Member #3,624
June 2003
|
Aren't you taking my quote a bit out of context aybabtu? |
|
23yrold3yrold
Member #1,134
March 2001
|
Now, what framerate did you get with mine? -- |
|
Karel
Member #3,624
June 2003
|
It says ~480 fps This is a really cool engine, if you'd improve it maybe you could make a Build-like engine, that would be awesome. Build > *. |
|
Steve Terry
Member #1,989
March 2002
 |
23: did you ever fix your rendering error? It really looks great though, and yeah I get excellent fps with your demo ___________________________________ |
|
23yrold3yrold
Member #1,134
March 2001
|
I already fixed the hit-wall-and-stop-dead thing in my other thread (which anyone is welcome to bump See fourth last post here for my latest progress. And thanks for the compliments -- |
|
aybabtu
Member #2,891
November 2002
|
I got MinGW up and running, and today I'm getting Allegro going...so I won't be the only person that can play my binaries! |
|
Thomas Harte
Member #33
April 2000
|
Attached is a compiled and slightly fixed version of my 'not really raycasting' engine, along with source, alleg40.dll and everything else you need to use it. It runs at 800x600, keeping up with the frame rate of 60fps on my little celeron 533Mhz. I'm aware that in a few cases (most notably on the very right edge of walls) slivers do not appear. I'm sure I could fix that. Also I'm aware that I don't really need cos and tan tables across an entire circle because cos(a) = -cos(-a) and tan(a+ half circle) = tan(a). That wouldn't take terribly long to fix. [My site] [Tetrominoes] |
|
aybabtu
Member #2,891
November 2002
|
Cool, Thomas! I only get about 10-16 fps depending on how close I am to a wall (the closer, the slower). |
|
Thomas Harte
Member #33
April 2000
|
How does 10-16fps compare with the other alternatives when running at 800x600? In any case, the good news is that I've fixed all rendering errors this afternoon and sped things up about 10% by replacing every instance of 'fmul' with 'fixmul'. EDIT: to put things in perspective, 800x600 (8bit) is 468.75kb. 320x200 (15/16bit) is just 125kb. And, comparitively, you get half the byte computations for free. [My site] [Tetrominoes] |
|
aybabtu
Member #2,891
November 2002
|
10-16 fps is pretty good because I get 11-18 on my 320x200 raycaster! |
|
Zaphos
Member #1,468
August 2001
|
23's seems to only get 45 fps when I make it 800x600, and has a minor graphical glitch in the background. Then again, he is drawing some pretty sky gradient or something in the top, so maybe that's just really really slow ... but I think we can probably say that yours is faster, TH. Especially because 60 is the refresh rate of my monitor
|
|
23yrold3yrold
Member #1,134
March 2001
|
Quote: 23's ... has a minor graphical glitch in the background. Yes, and I hate it with all my being. It doesn't show up in nice low resolutions though -- |
|
Carrus85
Member #2,633
August 2002
 |
I hate to be satins advocate, but shouldn't you guys start up another thread? This one is getting REAL crowded, it is kinda nice not having to sift through all of the pages.
|
|
23yrold3yrold
Member #1,134
March 2001
|
Whenever Matthew closes it, we'll all pile into Aybabtu's Depot thread -- |
|
gnolam
Member #2,030
March 2002
 |
Use the lightbulb, Luke (or change My Profile->Forums->General->Page Splits to a setting that you like) -- |
|
aybabtu
Member #2,891
November 2002
|
Quote: I hate to be satins advocate, but shouldn't you guys start up another thread? This one is getting REAL crowded, it is kinda nice not having to sift through all of the pages. I have my pages set to 25ppp, and I like it. I don't think it's crowded...pages are such a nice feature for dial up users who's modems are crapping out and only connect them at 21.6 kbps...bleh. Quote: Whenever Matthew closes it, we'll all pile into Aybabtu's Depot thread Well, you're all very welcome! How long is the longest thread ever? >225 posts, I think. |
|
|
|
.
I hope you can work out the kinks, but another great idea is to have the player move slowly if up against the wall proportional to his angle. For instance instead of stopping once you hit a wall at 10 degrees offcenter then move slowly in that direction instead of a dead stop. Of course if the player hits perpendicular to a wall then his velocity will by 0.
