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SpriteShadow v2.0 (now built into GZDoom 4.6.0!)

PostPosted: Wed Jan 18, 2017 3:04 am
by Nash


Sprite shadows are now built directly into the engine as of GZDoom 4.6.0!

You can enable it in the Display Options menu, or you can use SpriteShadows v2.0 to enable sprite shadows without user intervention (user still has the option to turn them off).

Lastly, you can enable or disable sprite shadows on actors individually by using the +CASTSPRITESHADOW and +NOSPRITESHADOW flag!

Requires GZDoom 4.6.0 or higher!

Update May 23rd 2021 (version 2.0)

- Update mod to utilize engine-native sprite shadow rendering.
- Relicense to MIT.

Spoiler: "Old Updates"


Have fun!

Though not required, I would appreciate it if you credit "Nash Muhandes" if you add the event handler-based mod (SpriteShadow v2.0) into your mods or standalone games. No need to ask for my permission to use it; just credit me!

Download latest version / Github repository

Wanna chat about my mods? Join my studio's Discord server, Mischief Donut!
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Thank you for the previous 9000+ downloads!

Re: [ZScript] Duke3D-style Actor Shadows [WIP]

PostPosted: Wed Jan 18, 2017 4:25 am
by Rachael
Glad to see you didn't give up on this despite the guy who originally asked giving up on it so quickly. :)

Re: [ZScript] Duke3D-style Actor Shadows [WIP]

PostPosted: Wed Jan 18, 2017 5:49 am
by D2JK
I don't remember how it was in Duke3D, but if there's a ledge, won't part of the shadow end up hovering in the air?

Re: [ZScript] Duke3D-style Actor Shadows [WIP]

PostPosted: Wed Jan 18, 2017 3:40 pm
by Kinsie
Yessss! I've wanted something like this for a long, long time!
Nash wrote:Since extending Actor isn't allowed in ZScript, making this work with ANY monster in any mod is going to be tricky
Honestly, making this work with EVERY actor may not actually be a good idea - not every actor will look good with this, resulting in weird things like shadows for fire on torches etc.

Re: [ZScript] Duke3D-style Actor Shadows [WIP]

PostPosted: Wed Jan 18, 2017 4:07 pm
by TerminusEst13
Fucking hell, this is incredible.

Dumb question, but just to make sure, would it be all right if I nicked it for use in my own projects?

Re: [ZScript] Duke3D-style Actor Shadows [WIP]

PostPosted: Wed Jan 18, 2017 4:17 pm
by Nash
Kinsie: I think I can limit it to actual living monsters by just doing a check for the +ISMONSTER (bIsMonster in ZScript) flag, although of course this won't be 100% fool proof against people who are doing hacky things with Things that aren't supposed to be monsters but are still flagged as such...

TerminusEst13: Have fun! When/if I update this to be more modular, I'll update this thread. I don't think the way I did it in that proof of concept is the best way (I can't imagine copy/pasting all that into every monster definition... a better way would be if this thing just works in the background with minimal code)

Additionally, I'm not feeling too good about that hack I did to force the shadow to be drawn under the monster (that is, spawning the shadow -> spawning a copy of said monster -> destroying original/map-placed copy of monster, in that order)... o_O

Re: [ZScript] Duke3D-style Actor Shadows [WIP]

PostPosted: Wed Jan 18, 2017 4:21 pm
by TerminusEst13
Yeah, there's definitely a lot of avenue for tweaking to make things more streamlined, but I think that's half the fun of things like this. It's like a puzzle game!

You'll probably solve it first, but I still like fiddling and experimenting. :D

Thank you very much again for this!

Re: [ZScript] Duke3D-style Actor Shadows [WIP]

PostPosted: Wed Jan 18, 2017 4:22 pm
by zrrion the insect
This looks very interesting! Hopefully you figure out a way to do this for everything.

Re: Duke3D-style Actor Shadows [WIP] - Doom monsters done

PostPosted: Thu Jan 19, 2017 3:35 am
by Nash
New version in OP!

Re: Duke3D-style Actor Shadows [WIP] - Doom monsters done

PostPosted: Thu Jan 19, 2017 7:18 am
by Jimmy
Do you really need to extend Actor to do this across the board? It's only monsters that generate this effect in Duke, right?

(/me might be posting without any real idea of how much ZScript is/isn't capable of)

Re: Duke3D-style Actor Shadows [WIP] - Doom monsters done

PostPosted: Thu Jan 19, 2017 7:55 am
by Nash
Yes, because if I don't extend Actor, I'd have to end up coding the functionality and a bunch of "replaces" for EVERY kind of monster (what I am doing in the latest version of the WAD in the OP). And it won't cover mod monsters without manual intervention.

The whole point of putting it in Actor is so that every monster in any mod, ever, will have the functionality, because when it boils down to it, everything you place in the map descends from Actor.

Simply checking for bIsMonster is enough to filter the effect to only happen on actual, living monsters... should be a non-issue, in most cases. So don't worry, the shadows won't be spawned for items, decorative stuff, etc...

(and again, I am already doing a monster check in the WAD in the OP - this shadow won't appear on the player, even if you give yourself the item - it will only appear on monsters)

Re: Duke3D-style Actor Shadows [WIP] - Doom monsters done

PostPosted: Thu Jan 19, 2017 12:30 pm
by Tormentor667
Very impressive work, congraulations for this showcase of the capabilities ZScript has :)

Re: Duke3D-style Actor Shadows [WIP] - Doom monsters done

PostPosted: Fri Jan 20, 2017 12:27 pm
by osjclatchford
looks great! this is something that I felt should always been apart of zdoom. nice to see it done with such skill

Re: Duke3D-style Actor Shadows [WIP] - Doom monsters done

PostPosted: Fri Jan 20, 2017 7:10 pm
by Caligari87
Nash, I gotta say this is a gamechanger. It looks good in screenshots, but actually playing is incredible. I never knew how much I needed this until now. This tiny change makes Doom look so much better.

8-)

Re: Duke3D-style Actor Shadows [WIP] - Doom monsters done

PostPosted: Sat Jan 21, 2017 2:42 am
by Nash
Thank you! I really want to make this modular and be autoload-friendly, so I'll just wait for "extends Actor" to be possible.

I also could submit it as a GZDoom feature but I think that's way out of scope for base engine functionality.

EDIT: Found a bug

Monsters that disappear when dying (Lost Soul, Pain Elemental) will leave their shadows behind despite their corpse not existing anymore. Will be fixed for next version