001package net.minecraft.world.gen.layer; 002 003import net.minecraft.world.biome.BiomeGenBase; 004 005public class GenLayerAddIsland extends GenLayer 006{ 007 public GenLayerAddIsland(long par1, GenLayer par3GenLayer) 008 { 009 super(par1); 010 this.parent = par3GenLayer; 011 } 012 013 /** 014 * Returns a list of integer values generated by this layer. These may be interpreted as temperatures, rainfall 015 * amounts, or biomeList[] indices based on the particular GenLayer subclass. 016 */ 017 public int[] getInts(int par1, int par2, int par3, int par4) 018 { 019 int i1 = par1 - 1; 020 int j1 = par2 - 1; 021 int k1 = par3 + 2; 022 int l1 = par4 + 2; 023 int[] aint = this.parent.getInts(i1, j1, k1, l1); 024 int[] aint1 = IntCache.getIntCache(par3 * par4); 025 026 for (int i2 = 0; i2 < par4; ++i2) 027 { 028 for (int j2 = 0; j2 < par3; ++j2) 029 { 030 int k2 = aint[j2 + 0 + (i2 + 0) * k1]; 031 int l2 = aint[j2 + 2 + (i2 + 0) * k1]; 032 int i3 = aint[j2 + 0 + (i2 + 2) * k1]; 033 int j3 = aint[j2 + 2 + (i2 + 2) * k1]; 034 int k3 = aint[j2 + 1 + (i2 + 1) * k1]; 035 this.initChunkSeed((long)(j2 + par1), (long)(i2 + par2)); 036 037 if (k3 == 0 && (k2 != 0 || l2 != 0 || i3 != 0 || j3 != 0)) 038 { 039 int l3 = 1; 040 int i4 = 1; 041 042 if (k2 != 0 && this.nextInt(l3++) == 0) 043 { 044 i4 = k2; 045 } 046 047 if (l2 != 0 && this.nextInt(l3++) == 0) 048 { 049 i4 = l2; 050 } 051 052 if (i3 != 0 && this.nextInt(l3++) == 0) 053 { 054 i4 = i3; 055 } 056 057 if (j3 != 0 && this.nextInt(l3++) == 0) 058 { 059 i4 = j3; 060 } 061 062 if (this.nextInt(3) == 0) 063 { 064 aint1[j2 + i2 * par3] = i4; 065 } 066 else if (i4 == BiomeGenBase.icePlains.biomeID) 067 { 068 aint1[j2 + i2 * par3] = BiomeGenBase.frozenOcean.biomeID; 069 } 070 else 071 { 072 aint1[j2 + i2 * par3] = 0; 073 } 074 } 075 else if (k3 > 0 && (k2 == 0 || l2 == 0 || i3 == 0 || j3 == 0)) 076 { 077 if (this.nextInt(5) == 0) 078 { 079 if (k3 == BiomeGenBase.icePlains.biomeID) 080 { 081 aint1[j2 + i2 * par3] = BiomeGenBase.frozenOcean.biomeID; 082 } 083 else 084 { 085 aint1[j2 + i2 * par3] = 0; 086 } 087 } 088 else 089 { 090 aint1[j2 + i2 * par3] = k3; 091 } 092 } 093 else 094 { 095 aint1[j2 + i2 * par3] = k3; 096 } 097 } 098 } 099 100 return aint1; 101 } 102}