FakeLightningBoltRenderer.java

package micdoodle8.mods.galacticraft.planets.venus.client;

import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.client.renderer.WorldRenderer;
import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
import org.lwjgl.opengl.GL11;

import java.util.Random;

public class FakeLightningBoltRenderer
{
    public static void renderBolt(long boltVertex, double x, double y, double z)
    {
        Tessellator tessellator = Tessellator.getInstance();
        WorldRenderer worldrenderer = tessellator.getWorldRenderer();
        GlStateManager.disableTexture2D();
        GlStateManager.disableLighting();
        GlStateManager.enableBlend();
        GlStateManager.blendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE);
        double[] adouble = new double[8];
        double[] adouble1 = new double[8];
        double d0 = 0.0D;
        double d1 = 0.0D;
        Random random = new Random(boltVertex);

        for (int i = 7; i >= 0; --i)
        {
            adouble[i] = d0;
            adouble1[i] = d1;
            d0 += (double)(random.nextInt(11) - 5);
            d1 += (double)(random.nextInt(11) - 5);
        }

        for (int k1 = 0; k1 < 4; ++k1)
        {
            Random random1 = new Random(boltVertex);

            for (int j = 0; j < 3; ++j)
            {
                int k = 7;
                int l = 0;

                if (j > 0)
                {
                    k = 7 - j;
                }

                if (j > 0)
                {
                    l = k - 2;
                }

                double d2 = adouble[k] - d0;
                double d3 = adouble1[k] - d1;

                for (int i1 = k; i1 >= l; --i1)
                {
                    double d4 = d2;
                    double d5 = d3;

                    if (j == 0)
                    {
                        d2 += (double)(random1.nextInt(11) - 5);
                        d3 += (double)(random1.nextInt(11) - 5);
                    }
                    else
                    {
                        d2 += (double)(random1.nextInt(31) - 15);
                        d3 += (double)(random1.nextInt(31) - 15);
                    }

                    worldrenderer.begin(5, DefaultVertexFormats.POSITION_COLOR);
                    double d6 = 0.1D + (double)k1 * 0.2D;

                    if (j == 0)
                    {
                        d6 *= (double)i1 * 0.1D + 1.0D;
                    }

                    double d7 = 0.1D + (double)k1 * 0.2D;

                    if (j == 0)
                    {
                        d7 *= (double)(i1 - 1) * 0.1D + 1.0D;
                    }

                    for (int j1 = 0; j1 < 5; ++j1)
                    {
                        double d8 = x + 0.5D - d6;
                        double d9 = z + 0.5D - d6;

                        if (j1 == 1 || j1 == 2)
                        {
                            d8 += d6 * 2.0D;
                        }

                        if (j1 == 2 || j1 == 3)
                        {
                            d9 += d6 * 2.0D;
                        }

                        double d10 = x + 0.5D - d7;
                        double d11 = z + 0.5D - d7;

                        if (j1 == 1 || j1 == 2)
                        {
                            d10 += d7 * 2.0D;
                        }

                        if (j1 == 2 || j1 == 3)
                        {
                            d11 += d7 * 2.0D;
                        }

                        worldrenderer.pos(d10 + d2, y + (double)(i1 * 16), d11 + d3).color(0.45F, 0.45F, 0.5F, 0.3F).endVertex();
                        worldrenderer.pos(d8 + d4, y + (double)((i1 + 1) * 16), d9 + d5).color(0.45F, 0.45F, 0.5F, 0.3F).endVertex();
                    }

                    tessellator.draw();
                }
            }
        }

        GlStateManager.blendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
        GlStateManager.disableBlend();
        GlStateManager.enableLighting();
        GlStateManager.enableTexture2D();
    }
}