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Questions tagged [particles]

Particle refers to a graphics technique that uses a large number of very small sprites or other graphic objects to simulate certain kinds of "fuzzy" structures like fire, explosions, etc.

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I cant Instantiate a particle system for the duration of a subroutine

I have a sub routine that lowers the timescale to 0.3 for 2 seconds. while in those two seconds i would like to spawn a trail of particles that follow the player. I can get the particles working if I ...
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139 views

Wind-blown fire particle effect from scratch

I want to create an effect of fire and be able to give it a variable amount of "wind" to make it blow to the side. I don't want the particles to just curve off to the side, but to flow through the air ...
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Particle systems don't start unless I look at them (Unity)

I'm currently working on an atmospheric system in Unity (day/night cycle, weather). I'm having an issue where my rain/snow particle systems won't start unless I look at them. They're way up in the sky,...
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29 views

Lightweight NON-dynamic particles in Unity

I know Unity has an advanced system for managing complex dynamic particle systems with a few thousand elements (Shuriken). Does Unity have a more lightweight way to create a very, very large (several ...
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40 views

Ice transition particle effect

We are small indie team developing a casual mobile game. We are trying to implement an effect like the normal-to-ice block transition in Angry Birds 2: How can we implement an effect like this in ...
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2answers
38 views

How do you make a particle system collision add a force to an object towards the particle system?

I have a lightning particle that gets shot at the ground. I want the particles to collide with the object they hit and add an upward force. I tried just entering a negative force in the Collider Force ...
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156 views

Can I apply a force to particles from a script?

I'm working on a game which involves streams of electrically-charged particles, being manipulated with electric and magnetic fields. Since I want a large number of small objects coming from an emitter ...
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1answer
165 views

Recreating Common “Glowing Pillar” Effect in UE4

I've noticed a common "glowing pillar beacon" effect in a few games lately (Overwatch, Fortnite, etc). The effect provides a translucent glowing beam pointing upwards that tapers off towards the top ...
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1answer
119 views

Rain Effect generation in a Unity VR project

I´m developing a VR project in Unity Engine and I need to implement a Rain Effect. I have considered the following: A VR game must run at least 90 frames per second. The Rain must be detailed. The ...
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2answers
374 views

How to create a wind tunnel / sky diving effect like in Fortnite?

I am using Unity and I want to create a sky diving effect, as if you were looking directly down while falling and have the wind fly past you. My guess is I have to do something with the particle ...
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108 views

Particles Artifacting on Unity games running OpenGL 3.0

Before I begin: I am using a Samsung Galaxy Note Fan Edition (Note7) on Android 8.0.0 and Experience UI v9.0, with the Exynos 8890 SoC, which included the Mali T-880 MP12. I have been encountering ...
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385 views

Additive, Alpha Blended, Unlit, Lit differences?

Short question, what's the difference between the shaders used for particle, and how they affect the visual. Additive Alpha Blended Unlit Lit
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94 views

Unreal Engine: Access Violation on FObjectFinder

I got a problem with my project in unreal. I wrote some code about a month ago and it worked fine until yesterday when the editor started crashin on launch. I get this error message in the log: ...
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1answer
76 views

Emit particles from only some parts of a mesh

I have a 3D mesh with 3 sub meshes in it, for 3 different materials. I would like particles to spawn from the mesh, but only from location where one of the material is assigned. How can I make this ...
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120 views

Importing external particle systems - unreal engine 4

Now, I have read that it is impossible to actually import a particle system into Unreal engine. However, I still do not understand how exactly to create a particle system inside the Engine itself, ...
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1answer
297 views

How do I create this windblown snow effect?

How do I create this snowy wind kind of effect, where wisps of snow appear to blow through the air close to the ground? I have seen this in several games like Skyrim, the new God of War, but I don't ...
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18 views

2d ParticleSystem batching problem

I have multiple ParticleSystems with TextureSheetAnimation pointing to the same texture, using different offsets/rows to choose ...
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31 views

How to set TextureSheetAnimation's startFrame range programatically?

I have a ParticleSystem: No matter what I do in code, it always sets the min to 0 and ...
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243 views

ParticleSystem, performance behind the technique on batching with different materials

I found that guide: https://thinhhb.wordpress.com/2016/03/27/unity3d-optimization-make-atlas-textures-for-particlesystem-reduce-drawcall-why-not/ which is quite clever. As far as I know, we can't ...
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1answer
358 views

Unity: Particle System start rotation completely incorrect when set via C# script

I am trying to set the starting rotation of a particle system via c# script so that the particles orientate with another object in the scene. My particle system 3d rotation is set as follows: ...
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257 views

How to attract particles to a certain point (custom gravity)?

How can I make a particles to be attracted to certain point in Unity? I have a sphere which represents a planet, and a particle system attached to it. I need those particles to fall on the planet's ...
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1answer
80 views

Circular Particle Effect in Monogame

I'm new to C# and Monogame, and I'm trying to create an effect of a 'psychic' ability, the user will press a key and a circular aura blast will emit from their position. I'm just trying to get the ...
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1answer
47 views

Errors while instancing particles

Im creating a particle system of my own, and I have some draw issues with it. It's the first time I use instancing, so it's probable I have some concept errors. First, I create three buffers: one for ...
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3answers
128 views

How to add rotation to two particle collisions?

I'm trying to make a particle system where when particles collide, they merge together, to get the new velocity vector the smaller particle's force is added to the larger one. However, this isn't ...
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25 views

Why is my particle system jumping around during game play?

I am making a fps. I got to the point of making the gun shoot using this tutorial: https://www.youtube.com/watch?v=THnivyG0Mvo&t=544s. I made the particle system for a muzzle flash and activated ...
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91 views

Activating particle system after 2 triggers on enter

I would like that particle system must play indefinetely at some position after two triggers on collision are triggered on enter. When game starts, particle system is deactivated. I have make this ...
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1answer
178 views

Unity - Fading mesh particles

Is there any ways to fade mesh particles like color over lifetime method with addictive shader. I have little to no understandings of shader coding, and fade rendering issue kicks in even with vertex ...
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1answer
51 views

How to use Particle start color in unity3d 2017

I want to create a particle(prefab) and use another object color to change those particle's color but it seems everything is changed and I don't know the new method to use it. Here my code: ...
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199 views

Unity Rotating Particle Effect Not Working Properly

I recently just got this unity asset with a tornado effect, I want it to be horizontal so I rotated it 90 degrees on the x axis but it just messes up the whole effect, at this point I'm clueless of ...
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2answers
198 views

How To Add Animation Graphics To An Android Game

How to make something like this animation drawings that coming out from the car ? (I'm using android studio) The Game's Link : Finger Driver
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1answer
103 views

How to make a shattering effect similar to Housemarque's Nex Machina?

After playing Nex Machina for a while, the shattering effect which turns monsters and scenes into cubes really fascinated me and I can't hold my curiosity to explore how they made it. I have tried to ...
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0answers
229 views

Moving all the particles in effect LIBGDX

I have a few particle effects that I would like to be in a circle shape in libgdx i.e. not a cone shape. I have done this by setting the direction of the particle effect from 0 to 360. The problem is ...
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1answer
271 views

Particles emit even though emission is disabled

I have created a basic particle system which is a single burst around a sphere. I have a script that disables this emission upon Start. If I don't disable the ...
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1answer
182 views

How to generate multiple particles at once?

I am tying to create a cartoony balloon-pop animation. I want there to be particles that come from all sides of a sphere. However they should all come at once, in a single burst. What I've done is ...
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1answer
160 views

Particle system prefab not instantiated

I am trying to instantiate my fire particle system during runtime like this: ...
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1answer
44 views

Implement Hearthstone disenchant extra cards particles

How would you implement the hearthstone flying particles? like you can see here These are not just simple particles flying from a to b... I think that they are flying in some random spline, and ...
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3answers
249 views

Efficiently drawing large numbers of small, moving squares to screen in libgdx

I'm trying to make a game which behaves somewhat like The Powder Toy. The world is square and can be filled with particles. Particles are drawn as small squares, constrained to integer positions, and ...
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1answer
95 views

Is it possible for a particle to have an infinite lifespan in SceneKit?

I'm trying to do an experiment where the user creates particles when they touch the screen, and then the particles just stay in place, only dying in collision. I'm wondering if it would be possible to ...
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1answer
262 views

Unity - are particles rendered and calculated when off-screen?

I have a scene where I have a lot of instances of the same particle system. As the game will go for mobile, I fear the particles are calculated even when they are not shown. So to cut it short, I ...
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1answer
140 views

Sorting a vector using array version of quick sort

I'm coding a simple rendering engine using OpengGL and I wrote a class that manages a particle system. The class creates the particles and pushes them into a vector to be used by a renderer to draw ...
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2answers
387 views

OpenGL - Changing blending modes using sprite batching

I'm working on a game which uses sprite batching to render sprites efficiently where each sprite gets batched with its VBO data into a VAO every frame (containing vertex coordinates, texture data and ...
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1answer
1k views

How to freeze particle system?

I have set particle system of duration 5 seconds. But, I wouldn't like particle system to repete but to be frozen in fourth second forever. How to do that?
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357 views

Particle system on sphere surface

I would like that particle system travels only on sphere surface. I have set sphere and particle system as it's child. How to constraint particle system ? How to make trails follow along sphere ...
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834 views

Why is Particle System Not Visible Without Scene Window Viewing the Origin?

I have a particle system, which is supposed to be highlighting an important game object, but the Particle System doesn't show on the game window unless the Scene window camera has the Origin (0,0,0) ...
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28 views

Lightning not hitting an object?

I was following this tutorial, but the lightning is not hitting the other object as the video shows. ...
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1answer
1k views

Differences between particles and using shader in creating effects

I'm working with particles and little bit with shader. Both of them can do the same task like creating effects of flame, snow, glowing ... So which one is better and what are differences between them?...
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1answer
156 views

Algorithm to draw particles in correct order?

For a game I'm making as a hobbyist project, I need to be able to draw smoke on the screen. I am doing this by setting up a particle system. The problem is I need all the particles drawn in order from ...
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1answer
361 views

Flare (particle system) showing weird semi-transparent rectangles instead of smoke when there's fog in the scene

I'm making an FPS game with some fog in the scene. I've added a flare particle system (from the standard assets' prefabs) but it looks like it has some weird collision with the fog. Whenever the ...
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1answer
210 views

Particle system color not set properly in Android build in Unity.

I want to set the color of "Particle System" that I add to a game object in run time. Both game object and particle system are created in run time too. I have the following code that works well on PC ...
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2k views

In SDL2 what is the fastest / most efficient way to draw pixels onto the screen? Using SDL_RenderDrawPoint or SDL_RenderCopy with a Texture?

I want to add pixel splatters and particle effects to a game. For this my options were to have a bunch of pre-made animations in the form of textures, OR create a particle engine. For the particle ...