001package net.minecraft.client.renderer.entity;
002
003import cpw.mods.fml.relauncher.Side;
004import cpw.mods.fml.relauncher.SideOnly;
005import java.util.Random;
006import net.minecraft.client.renderer.Tessellator;
007import net.minecraft.entity.Entity;
008import net.minecraft.entity.effect.EntityLightningBolt;
009import org.lwjgl.opengl.GL11;
010
011@SideOnly(Side.CLIENT)
012public class RenderLightningBolt extends Render
013{
014    /**
015     * Actually renders the lightning bolt. This method is called through the doRender method.
016     */
017    public void doRenderLightningBolt(EntityLightningBolt par1EntityLightningBolt, double par2, double par4, double par6, float par8, float par9)
018    {
019        Tessellator tessellator = Tessellator.instance;
020        GL11.glDisable(GL11.GL_TEXTURE_2D);
021        GL11.glDisable(GL11.GL_LIGHTING);
022        GL11.glEnable(GL11.GL_BLEND);
023        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE);
024        double[] adouble = new double[8];
025        double[] adouble1 = new double[8];
026        double d3 = 0.0D;
027        double d4 = 0.0D;
028        Random random = new Random(par1EntityLightningBolt.boltVertex);
029
030        for (int i = 7; i >= 0; --i)
031        {
032            adouble[i] = d3;
033            adouble1[i] = d4;
034            d3 += (double)(random.nextInt(11) - 5);
035            d4 += (double)(random.nextInt(11) - 5);
036        }
037
038        for (int j = 0; j < 4; ++j)
039        {
040            Random random1 = new Random(par1EntityLightningBolt.boltVertex);
041
042            for (int k = 0; k < 3; ++k)
043            {
044                int l = 7;
045                int i1 = 0;
046
047                if (k > 0)
048                {
049                    l = 7 - k;
050                }
051
052                if (k > 0)
053                {
054                    i1 = l - 2;
055                }
056
057                double d5 = adouble[l] - d3;
058                double d6 = adouble1[l] - d4;
059
060                for (int j1 = l; j1 >= i1; --j1)
061                {
062                    double d7 = d5;
063                    double d8 = d6;
064
065                    if (k == 0)
066                    {
067                        d5 += (double)(random1.nextInt(11) - 5);
068                        d6 += (double)(random1.nextInt(11) - 5);
069                    }
070                    else
071                    {
072                        d5 += (double)(random1.nextInt(31) - 15);
073                        d6 += (double)(random1.nextInt(31) - 15);
074                    }
075
076                    tessellator.startDrawing(5);
077                    float f2 = 0.5F;
078                    tessellator.setColorRGBA_F(0.9F * f2, 0.9F * f2, 1.0F * f2, 0.3F);
079                    double d9 = 0.1D + (double)j * 0.2D;
080
081                    if (k == 0)
082                    {
083                        d9 *= (double)j1 * 0.1D + 1.0D;
084                    }
085
086                    double d10 = 0.1D + (double)j * 0.2D;
087
088                    if (k == 0)
089                    {
090                        d10 *= (double)(j1 - 1) * 0.1D + 1.0D;
091                    }
092
093                    for (int k1 = 0; k1 < 5; ++k1)
094                    {
095                        double d11 = par2 + 0.5D - d9;
096                        double d12 = par6 + 0.5D - d9;
097
098                        if (k1 == 1 || k1 == 2)
099                        {
100                            d11 += d9 * 2.0D;
101                        }
102
103                        if (k1 == 2 || k1 == 3)
104                        {
105                            d12 += d9 * 2.0D;
106                        }
107
108                        double d13 = par2 + 0.5D - d10;
109                        double d14 = par6 + 0.5D - d10;
110
111                        if (k1 == 1 || k1 == 2)
112                        {
113                            d13 += d10 * 2.0D;
114                        }
115
116                        if (k1 == 2 || k1 == 3)
117                        {
118                            d14 += d10 * 2.0D;
119                        }
120
121                        tessellator.addVertex(d13 + d5, par4 + (double)(j1 * 16), d14 + d6);
122                        tessellator.addVertex(d11 + d7, par4 + (double)((j1 + 1) * 16), d12 + d8);
123                    }
124
125                    tessellator.draw();
126                }
127            }
128        }
129
130        GL11.glDisable(GL11.GL_BLEND);
131        GL11.glEnable(GL11.GL_LIGHTING);
132        GL11.glEnable(GL11.GL_TEXTURE_2D);
133    }
134
135    /**
136     * Actually renders the given argument. This is a synthetic bridge method, always casting down its argument and then
137     * handing it off to a worker function which does the actual work. In all probabilty, the class Render is generic
138     * (Render<T extends Entity) and this method has signature public void doRender(T entity, double d, double d1,
139     * double d2, float f, float f1). But JAD is pre 1.5 so doesn't do that.
140     */
141    public void doRender(Entity par1Entity, double par2, double par4, double par6, float par8, float par9)
142    {
143        this.doRenderLightningBolt((EntityLightningBolt)par1Entity, par2, par4, par6, par8, par9);
144    }
145}