src/game/java/net/minecraft/client/particle/ReversePortalParticle.java

package net.minecraft.client.particle;

import net.minecraft.client.multiplayer.ClientLevel;
import net.minecraft.core.particles.SimpleParticleType;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;

@OnlyIn(Dist.CLIENT)
public class ReversePortalParticle extends PortalParticle {
    ReversePortalParticle(ClientLevel p_107590_, double p_107591_, double p_107592_, double p_107593_, double p_107594_, double p_107595_, double p_107596_) {
        super(p_107590_, p_107591_, p_107592_, p_107593_, p_107594_, p_107595_, p_107596_);
        this.quadSize *= 1.5F;
        this.lifetime = (int)(Math.random() * 2.0) + 60;
    }

    @Override
    public float getQuadSize(float p_107608_) {
        float f = 1.0F - ((float)this.age + p_107608_) / ((float)this.lifetime * 1.5F);
        return this.quadSize * f;
    }

    @Override
    public void tick() {
        this.xo = this.x;
        this.yo = this.y;
        this.zo = this.z;
        if (this.age++ >= this.lifetime) {
            this.remove();
        } else {
            float f = (float)this.age / (float)this.lifetime;
            this.x = this.x + this.xd * (double)f;
            this.y = this.y + this.yd * (double)f;
            this.z = this.z + this.zd * (double)f;
        }
    }

    @OnlyIn(Dist.CLIENT)
    public static class ReversePortalProvider implements ParticleProvider<SimpleParticleType> {
        private final SpriteSet sprite;

        public ReversePortalProvider(SpriteSet p_107611_) {
            this.sprite = p_107611_;
        }

        public Particle createParticle(
            SimpleParticleType p_107622_,
            ClientLevel p_107623_,
            double p_107624_,
            double p_107625_,
            double p_107626_,
            double p_107627_,
            double p_107628_,
            double p_107629_
        ) {
            ReversePortalParticle reverseportalparticle = new ReversePortalParticle(p_107623_, p_107624_, p_107625_, p_107626_, p_107627_, p_107628_, p_107629_);
            reverseportalparticle.pickSprite(this.sprite);
            return reverseportalparticle;
        }
    }
}