001    package net.minecraft.src;
002    
003    import cpw.mods.fml.common.Side;
004    import cpw.mods.fml.common.asm.SideOnly;
005    import java.nio.FloatBuffer;
006    import java.util.Random;
007    import net.minecraft.client.Minecraft;
008    import org.lwjgl.opengl.GL11;
009    
010    @SideOnly(Side.CLIENT)
011    public class RenderEndPortal extends TileEntitySpecialRenderer
012    {
013        FloatBuffer field_76908_a = GLAllocation.createDirectFloatBuffer(16);
014    
015        public void func_76906_a(TileEntityEndPortal par1TileEntityEndPortal, double par2, double par4, double par6, float par8)
016        {
017            float var9 = (float)this.tileEntityRenderer.playerX;
018            float var10 = (float)this.tileEntityRenderer.playerY;
019            float var11 = (float)this.tileEntityRenderer.playerZ;
020            GL11.glDisable(GL11.GL_LIGHTING);
021            Random var12 = new Random(31100L);
022            float var13 = 0.75F;
023    
024            for (int var14 = 0; var14 < 16; ++var14)
025            {
026                GL11.glPushMatrix();
027                float var15 = (float)(16 - var14);
028                float var16 = 0.0625F;
029                float var17 = 1.0F / (var15 + 1.0F);
030    
031                if (var14 == 0)
032                {
033                    this.bindTextureByName("/misc/tunnel.png");
034                    var17 = 0.1F;
035                    var15 = 65.0F;
036                    var16 = 0.125F;
037                    GL11.glEnable(GL11.GL_BLEND);
038                    GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
039                }
040    
041                if (var14 == 1)
042                {
043                    this.bindTextureByName("/misc/particlefield.png");
044                    GL11.glEnable(GL11.GL_BLEND);
045                    GL11.glBlendFunc(GL11.GL_ONE, GL11.GL_ONE);
046                    var16 = 0.5F;
047                }
048    
049                float var18 = (float)(-(par4 + (double)var13));
050                float var19 = var18 + ActiveRenderInfo.objectY;
051                float var20 = var18 + var15 + ActiveRenderInfo.objectY;
052                float var21 = var19 / var20;
053                var21 += (float)(par4 + (double)var13);
054                GL11.glTranslatef(var9, var21, var11);
055                GL11.glTexGeni(GL11.GL_S, GL11.GL_TEXTURE_GEN_MODE, GL11.GL_OBJECT_LINEAR);
056                GL11.glTexGeni(GL11.GL_T, GL11.GL_TEXTURE_GEN_MODE, GL11.GL_OBJECT_LINEAR);
057                GL11.glTexGeni(GL11.GL_R, GL11.GL_TEXTURE_GEN_MODE, GL11.GL_OBJECT_LINEAR);
058                GL11.glTexGeni(GL11.GL_Q, GL11.GL_TEXTURE_GEN_MODE, GL11.GL_EYE_LINEAR);
059                GL11.glTexGen(GL11.GL_S, GL11.GL_OBJECT_PLANE, this.func_76907_a(1.0F, 0.0F, 0.0F, 0.0F));
060                GL11.glTexGen(GL11.GL_T, GL11.GL_OBJECT_PLANE, this.func_76907_a(0.0F, 0.0F, 1.0F, 0.0F));
061                GL11.glTexGen(GL11.GL_R, GL11.GL_OBJECT_PLANE, this.func_76907_a(0.0F, 0.0F, 0.0F, 1.0F));
062                GL11.glTexGen(GL11.GL_Q, GL11.GL_EYE_PLANE, this.func_76907_a(0.0F, 1.0F, 0.0F, 0.0F));
063                GL11.glEnable(GL11.GL_TEXTURE_GEN_S);
064                GL11.glEnable(GL11.GL_TEXTURE_GEN_T);
065                GL11.glEnable(GL11.GL_TEXTURE_GEN_R);
066                GL11.glEnable(GL11.GL_TEXTURE_GEN_Q);
067                GL11.glPopMatrix();
068                GL11.glMatrixMode(GL11.GL_TEXTURE);
069                GL11.glPushMatrix();
070                GL11.glLoadIdentity();
071                GL11.glTranslatef(0.0F, (float)(Minecraft.getSystemTime() % 700000L) / 700000.0F, 0.0F);
072                GL11.glScalef(var16, var16, var16);
073                GL11.glTranslatef(0.5F, 0.5F, 0.0F);
074                GL11.glRotatef((float)(var14 * var14 * 4321 + var14 * 9) * 2.0F, 0.0F, 0.0F, 1.0F);
075                GL11.glTranslatef(-0.5F, -0.5F, 0.0F);
076                GL11.glTranslatef(-var9, -var11, -var10);
077                var19 = var18 + ActiveRenderInfo.objectY;
078                GL11.glTranslatef(ActiveRenderInfo.objectX * var15 / var19, ActiveRenderInfo.objectZ * var15 / var19, -var10);
079                Tessellator var24 = Tessellator.instance;
080                var24.startDrawingQuads();
081                var21 = var12.nextFloat() * 0.5F + 0.1F;
082                float var22 = var12.nextFloat() * 0.5F + 0.4F;
083                float var23 = var12.nextFloat() * 0.5F + 0.5F;
084    
085                if (var14 == 0)
086                {
087                    var23 = 1.0F;
088                    var22 = 1.0F;
089                    var21 = 1.0F;
090                }
091    
092                var24.setColorRGBA_F(var21 * var17, var22 * var17, var23 * var17, 1.0F);
093                var24.addVertex(par2, par4 + (double)var13, par6);
094                var24.addVertex(par2, par4 + (double)var13, par6 + 1.0D);
095                var24.addVertex(par2 + 1.0D, par4 + (double)var13, par6 + 1.0D);
096                var24.addVertex(par2 + 1.0D, par4 + (double)var13, par6);
097                var24.draw();
098                GL11.glPopMatrix();
099                GL11.glMatrixMode(GL11.GL_MODELVIEW);
100            }
101    
102            GL11.glDisable(GL11.GL_BLEND);
103            GL11.glDisable(GL11.GL_TEXTURE_GEN_S);
104            GL11.glDisable(GL11.GL_TEXTURE_GEN_T);
105            GL11.glDisable(GL11.GL_TEXTURE_GEN_R);
106            GL11.glDisable(GL11.GL_TEXTURE_GEN_Q);
107            GL11.glEnable(GL11.GL_LIGHTING);
108        }
109    
110        private FloatBuffer func_76907_a(float par1, float par2, float par3, float par4)
111        {
112            this.field_76908_a.clear();
113            this.field_76908_a.put(par1).put(par2).put(par3).put(par4);
114            this.field_76908_a.flip();
115            return this.field_76908_a;
116        }
117    
118        public void renderTileEntityAt(TileEntity par1TileEntity, double par2, double par4, double par6, float par8)
119        {
120            this.func_76906_a((TileEntityEndPortal)par1TileEntity, par2, par4, par6, par8);
121        }
122    }