001 package net.minecraft.client.renderer.texturefx;
002
003 import cpw.mods.fml.client.FMLTextureFX;
004 import cpw.mods.fml.relauncher.Side;
005 import cpw.mods.fml.relauncher.SideOnly;
006 import java.util.Random;
007 import net.minecraft.block.Block;
008 import net.minecraft.util.MathHelper;
009
010 @SideOnly(Side.CLIENT)
011 public class TexturePortalFX extends FMLTextureFX
012 {
013 /** Portal tick counter */
014 private int portalTickCounter = 0;
015
016 /** Portal texture data */
017 private byte[][] portalTextureData;
018
019 public TexturePortalFX()
020 {
021 super(Block.portal.blockIndexInTexture);
022 setup();
023 }
024
025 @Override
026 public void setup()
027 {
028 super.setup();
029 portalTextureData = new byte[32][tileSizeSquare << 4];
030 Random var1 = new Random(100L);
031
032 for (int var2 = 0; var2 < 32; ++var2)
033 {
034 for (int var3 = 0; var3 < tileSizeBase; ++var3)
035 {
036 for (int var4 = 0; var4 < tileSizeBase; ++var4)
037 {
038 float var5 = 0.0F;
039 int var6;
040
041 for (var6 = 0; var6 < 2; ++var6)
042 {
043 float var7 = (float)(var6 * tileSizeBase) * 0.5F;
044 float var8 = (float)(var6 * tileSizeBase) * 0.5F;
045 float var9 = ((float)var3 - var7) / (float)tileSizeBase * 2.0F;
046 float var10 = ((float)var4 - var8) / (float)tileSizeBase * 2.0F;
047
048 if (var9 < -1.0F)
049 {
050 var9 += 2.0F;
051 }
052
053 if (var9 >= 1.0F)
054 {
055 var9 -= 2.0F;
056 }
057
058 if (var10 < -1.0F)
059 {
060 var10 += 2.0F;
061 }
062
063 if (var10 >= 1.0F)
064 {
065 var10 -= 2.0F;
066 }
067
068 float var11 = var9 * var9 + var10 * var10;
069 float var12 = (float)Math.atan2((double)var10, (double)var9) + ((float)var2 / 32.0F * (float)Math.PI * 2.0F - var11 * 10.0F + (float)(var6 * 2)) * (float)(var6 * 2 - 1);
070 var12 = (MathHelper.sin(var12) + 1.0F) / 2.0F;
071 var12 /= var11 + 1.0F;
072 var5 += var12 * 0.5F;
073 }
074
075 var5 += var1.nextFloat() * 0.1F;
076 var6 = (int)(var5 * 100.0F + 155.0F);
077 int var13 = (int)(var5 * var5 * 200.0F + 55.0F);
078 int var14 = (int)(var5 * var5 * var5 * var5 * 255.0F);
079 int var15 = (int)(var5 * 100.0F + 155.0F);
080 int var16 = var4 * tileSizeBase + var3;
081 this.portalTextureData[var2][var16 * 4 + 0] = (byte)var13;
082 this.portalTextureData[var2][var16 * 4 + 1] = (byte)var14;
083 this.portalTextureData[var2][var16 * 4 + 2] = (byte)var6;
084 this.portalTextureData[var2][var16 * 4 + 3] = (byte)var15;
085 }
086 }
087 }
088 }
089
090 public void onTick()
091 {
092 ++this.portalTickCounter;
093 byte[] var1 = this.portalTextureData[this.portalTickCounter & 31];
094
095 for (int var2 = 0; var2 < tileSizeSquare; ++var2)
096 {
097 int var3 = var1[var2 * 4 + 0] & 255;
098 int var4 = var1[var2 * 4 + 1] & 255;
099 int var5 = var1[var2 * 4 + 2] & 255;
100 int var6 = var1[var2 * 4 + 3] & 255;
101
102 if (this.anaglyphEnabled)
103 {
104 int var7 = (var3 * 30 + var4 * 59 + var5 * 11) / 100;
105 int var8 = (var3 * 30 + var4 * 70) / 100;
106 int var9 = (var3 * 30 + var5 * 70) / 100;
107 var3 = var7;
108 var4 = var8;
109 var5 = var9;
110 }
111
112 this.imageData[var2 * 4 + 0] = (byte)var3;
113 this.imageData[var2 * 4 + 1] = (byte)var4;
114 this.imageData[var2 * 4 + 2] = (byte)var5;
115 this.imageData[var2 * 4 + 3] = (byte)var6;
116 }
117 }
118 }