dragon death

    @Override
    protected void preRenderCallback(EntityLivingBase entityLivingBase, float partialTickTime) {
        float rot = (float)(720.0 * (System.currentTimeMillis() & 0x3FFFL) / 0x3FFFL);

        GlStateManager.pushMatrix();
        GlStateManager.rotate(180, 0F, 0F, 1F);
        GlStateManager.pushMatrix();
        GlStateManager.rotate(rot, 0.0F, 0.5F, 0.0F);
        GlStateManager.rotate(rot / 2, 0.0F, 0.0F, 0.5F);
        renderDragonDeath(180, 0.0F, 0.0F, 0.0F);
        GlStateManager.popMatrix();
        GlStateManager.popMatrix();
    }

    private void renderDragonDeath(float density, float x, float y, float z) {
        Tessellator tessellator = Tessellator.getInstance();
        WorldRenderer worldrenderer = tessellator.getWorldRenderer();
        RenderHelper.disableStandardItemLighting();
        float f7 = density / 200.0F;
        float f8 = 0.0F;

        if (f7 > 0.8F) f8 = (f7 - 0.8F) / 0.2F;

        Random random = new Random(432L);
        GlStateManager.disableTexture2D();
        GlStateManager.shadeModel(7425);
        GlStateManager.enableBlend();
        GlStateManager.blendFunc(770, 1);
        GlStateManager.disableAlpha();
        GlStateManager.enableCull();
        GlStateManager.depthMask(false);
        GlStateManager.pushMatrix();
        GlStateManager.translate(x, y, z);

        for (int i = 0;
        (float) i < (f7 + f7 * f7) / 2.0F * 60.0F; ++i) {
            GlStateManager.rotate(random.nextFloat() * 360.0F, 1.0F, 0.0F, 0.0F);
            GlStateManager.rotate(random.nextFloat() * 360.0F, 0.0F, 1.0F, 0.0F);
            GlStateManager.rotate(random.nextFloat() * 360.0F, 0.0F, 0.0F, 1.0F);
            GlStateManager.rotate(random.nextFloat() * 360.0F, 1.0F, 0.0F, 0.0F);
            GlStateManager.rotate(random.nextFloat() * 360.0F, 0.0F, 1.0F, 0.0F);
            GlStateManager.rotate(random.nextFloat() * 360.0F + f7 * 90.0F, 0.0F, 0.0F, 1.0F);
            worldrenderer.startDrawing(6);
            float f9 = random.nextFloat() * 20.0F + 5.0F + f8 * 10.0F;
            float f10 = random.nextFloat() * 2.0F + 1.0F + f8 * 2.0F;
            worldrenderer.setColorRGBA_I(16760576, (int)(255.0F * (1.0F - f8)));

            worldrenderer.addVertex(0.0D, 0.0D, 0.0D);
            worldrenderer.setColorRGBA_I(16711680, 0);
            worldrenderer.addVertex(-0.866D * (double) f10, (double) f9, (double)(-0.5F * f10));
            worldrenderer.addVertex(0.866D * (double) f10, (double) f9, (double)(-0.5F * f10));
            worldrenderer.addVertex(0.0D, (double) f9, (double)(1.0F * f10));
            worldrenderer.addVertex(-0.866D * (double) f10, (double) f9, (double)(-0.5F * f10));
            tessellator.draw();
        }

        GlStateManager.popMatrix();
        GlStateManager.depthMask(true);
        GlStateManager.disableCull();
        GlStateManager.disableBlend();
        GlStateManager.shadeModel(7424);
        GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
        GlStateManager.enableTexture2D();
        GlStateManager.enableAlpha();
        RenderHelper.enableStandardItemLighting();
    }