Explosions?

[Josh]

Has anyone done some nice realistic explosions with particle emitters? I'm looking for an animated texture or emitter effect for our grenades.

[macklebee]

sprite sheet texture used with emitter prefab:

 

 

probably could be spruced up with some trailers shooting out at random directions...

[ChrisV]

Yes, i have. I've created dozens of cool particle FX, using animated spritesheets (fire, explosions, weather FX, impact FX, liquids, and much more...).

I'll create a few and send them to you. ;-)

[gamecreator]

This would definitely be handy to have in the Steam workshop and also publicly available. Like skyboxes, explosions large and small are used in almost every game. Bonus points if you can change the color for other looks and effects (like acid blasts, spells, etc.)

[ChrisV]

This would definitely be handy to have in the Steam workshop and also publicly available. Like skyboxes, explosions large and small are used in almost every game. Bonus points if you can change the color for other looks and effects (like acid blasts, spells, etc.)

Yep, i totally agree. Maybe i should spend a couple of weeks creating some art for LE, instead of working on our projects.

Nah...the projects must also continue, but i'll do a bit of both...art creation for LE, and working on the projects.

[Josh]

I don't know if the grenade will actually work. The animation includes the grenade being thrown, which makes it not very useful right now...

[BES]

Make it a nade launcher instead for now :-)

 

and ChrisV dont forget the shockwaves on the explosions..lol...thanks for offering to make some FX.

[Guppy]

I don't know if the grenade will actually work. The animation includes the grenade being thrown, which makes it not very useful right now...

You perfer it explode without being thrown? Outch

[Crazycarpet]

I don't know if the grenade will actually work. The animation includes the grenade being thrown, which makes it not very useful right now...

 

I'm a bit confused, so how is the grenade supposed to work? You press the shoot key, your character does a throw animation and then it creates an entity for the grenade that's been thrown that eventually explodes or..?

 

Yep, i totally agree. Maybe i should spend a couple of weeks creating some art for LE, instead of working on our projects.

Nah...the projects must also continue, but i'll do a bit of both...art creation for LE, and working on the projects.

 

Great to see people helping out within the community, looking forward to seeing some of your work.

[Rick]

I get the impression what he means is the grenade model itself is thrown out into the world from the hand from the animation. That means it goes the same place every time. Normally at the point of where the grenade leaves the hand you'd want the grenade to disappear so that you can place your own grenade model so you can throw it in code to any distance you need independent of the animation.

[cassius]

For what its worth theres a 4 second delay before grenades go off. I know cos I have thrown them during military service.

[Josh]

For what its worth theres a 4 second delay before grenades go off. I know cos I have thrown them during military service.

Hey, that's a pretty useful feature.

[ChrisV]

Made four different explosion spritesheets yesterday. Going to test them out now in LE and see if they need any adjustments and/or additionnal particle emitter(s) to enhance the effect.

I'll also create some impact fx for bullets on different materials (glass, metal, wood, etc...). Will be fun to do.

 

Bonus points if you can change the color for other looks and effects (like acid blasts, spells, etc.)

I guess the most advanced way would be through a shader. Or, you could change the diffuse colour on the material to get other results.

[shadmar]

You can playback a 6x6 spritesheet using a pure shader with uvmap, like this :

 

    //control
   float images=6; //6x6 spritesheet
   float speed=10000;

   float X=floor(images*(mod(currenttime/speed,1)));
   float Y=ceil(images*(mod(currenttime/(speed*images),1)));
   outcolor *= texture(texture0,vec2(ex_texcoords0.x/images+X/images,ex_texcoords0.y/images+Y/images));

[Josh]

There's a particle shader also that does a smooth blend between animation frames. I can't remember if Chris or I wrote it.

[shadmar]

Not for the faint gpu:

https://www.shadertoy.com/view/XdfGz8

[DerRidda]

Grenade explosions aren't actually all that spectacular, like most explosions actually. There's no fuel being burned in the air, these flamesplosions are Hollywood nonsense.

 

Look at this:

The only thing you really see is dirt being kicked up.

[ChrisV]

While working on some explosion particle fx for LE, it seems that there's an issue with saving animated spritesheets as a prefab.

I can make a prefab out of a spritesheet, and when i place that prefab in the scene, it animates in the editor, but when i run the game, there's no animation, and i see the entire spritesheet displayed, instead of each single frame animated.

 

I guess it has to do with the way LE handles/plays the emitter when using a spritesheet. I experienced the same when i was making effects for our game Hostile. Normal emitters (that don't use a spritesheet) get instanced in code and displayed using the 'Show()' command, but for spritesheets, you need to add the 'SetAnimationRows()' and 'SetAnimationColumns()' for them to animate.

 

So, atm i can not make prefabs out of the fx.

 

My idea was to mix animated spritesheets and emitters to create these explosion fx. For example, i want to add a horizontal blastwave effect using an emitter (no spritesheet), and also sparks or other cool effects, but adding an animated spritesheet to a prefab breaks the animation in game mode.

 

I'll report this as a 'bug', though.

[macklebee]

hmmm weird - it works fine for me

Edit- no, youre right. The created animated sprite sheet prefab works only if you break it and make it a non-prefab.