001 package net.minecraft.src; 002 003 import cpw.mods.fml.common.Side; 004 import cpw.mods.fml.common.asm.SideOnly; 005 import java.util.ArrayList; 006 import java.util.HashMap; 007 import java.util.List; 008 import java.util.Map; 009 010 public class MapData extends WorldSavedData 011 { 012 public int xCenter; 013 public int zCenter; 014 public byte dimension; 015 public byte scale; 016 017 /** colours */ 018 public byte[] colors = new byte[16384]; 019 020 /** 021 * Incremented each update of the map item, used for the patchy updating map effect and the spinning player icons 022 * while in the End and Nether. 023 */ 024 public int randomEffect; 025 026 /** 027 * Holds a reference to the MapInfo of the players who own a copy of the map 028 */ 029 public List playersArrayList = new ArrayList(); 030 031 /** 032 * Holds a reference to the players who own a copy of the map and a reference to their MapInfo 033 */ 034 private Map playersHashMap = new HashMap(); 035 public List playersVisibleOnMap = new ArrayList(); 036 037 public MapData(String par1Str) 038 { 039 super(par1Str); 040 } 041 042 /** 043 * reads in data from the NBTTagCompound into this MapDataBase 044 */ 045 public void readFromNBT(NBTTagCompound par1NBTTagCompound) 046 { 047 this.dimension = par1NBTTagCompound.getByte("dimension"); 048 this.xCenter = par1NBTTagCompound.getInteger("xCenter"); 049 this.zCenter = par1NBTTagCompound.getInteger("zCenter"); 050 this.scale = par1NBTTagCompound.getByte("scale"); 051 052 if (this.scale < 0) 053 { 054 this.scale = 0; 055 } 056 057 if (this.scale > 4) 058 { 059 this.scale = 4; 060 } 061 062 short var2 = par1NBTTagCompound.getShort("width"); 063 short var3 = par1NBTTagCompound.getShort("height"); 064 065 if (var2 == 128 && var3 == 128) 066 { 067 this.colors = par1NBTTagCompound.getByteArray("colors"); 068 } 069 else 070 { 071 byte[] var4 = par1NBTTagCompound.getByteArray("colors"); 072 this.colors = new byte[16384]; 073 int var5 = (128 - var2) / 2; 074 int var6 = (128 - var3) / 2; 075 076 for (int var7 = 0; var7 < var3; ++var7) 077 { 078 int var8 = var7 + var6; 079 080 if (var8 >= 0 || var8 < 128) 081 { 082 for (int var9 = 0; var9 < var2; ++var9) 083 { 084 int var10 = var9 + var5; 085 086 if (var10 >= 0 || var10 < 128) 087 { 088 this.colors[var10 + var8 * 128] = var4[var9 + var7 * var2]; 089 } 090 } 091 } 092 } 093 } 094 } 095 096 /** 097 * write data to NBTTagCompound from this MapDataBase, similar to Entities and TileEntities 098 */ 099 public void writeToNBT(NBTTagCompound par1NBTTagCompound) 100 { 101 par1NBTTagCompound.setByte("dimension", this.dimension); 102 par1NBTTagCompound.setInteger("xCenter", this.xCenter); 103 par1NBTTagCompound.setInteger("zCenter", this.zCenter); 104 par1NBTTagCompound.setByte("scale", this.scale); 105 par1NBTTagCompound.setShort("width", (short)128); 106 par1NBTTagCompound.setShort("height", (short)128); 107 par1NBTTagCompound.setByteArray("colors", this.colors); 108 } 109 110 /** 111 * Adds the player passed to the list of visible players and checks to see which players are visible 112 */ 113 public void updateVisiblePlayers(EntityPlayer par1EntityPlayer, ItemStack par2ItemStack) 114 { 115 if (!this.playersHashMap.containsKey(par1EntityPlayer)) 116 { 117 MapInfo var3 = new MapInfo(this, par1EntityPlayer); 118 this.playersHashMap.put(par1EntityPlayer, var3); 119 this.playersArrayList.add(var3); 120 } 121 122 this.playersVisibleOnMap.clear(); 123 124 for (int var14 = 0; var14 < this.playersArrayList.size(); ++var14) 125 { 126 MapInfo var4 = (MapInfo)this.playersArrayList.get(var14); 127 128 if (!var4.entityplayerObj.isDead && var4.entityplayerObj.inventory.hasItemStack(par2ItemStack)) 129 { 130 float var5 = (float)(var4.entityplayerObj.posX - (double)this.xCenter) / (float)(1 << this.scale); 131 float var6 = (float)(var4.entityplayerObj.posZ - (double)this.zCenter) / (float)(1 << this.scale); 132 byte var7 = 64; 133 byte var8 = 64; 134 135 if (var5 >= (float)(-var7) && var6 >= (float)(-var8) && var5 <= (float)var7 && var6 <= (float)var8) 136 { 137 byte var9 = 0; 138 byte var10 = (byte)((int)((double)(var5 * 2.0F) + 0.5D)); 139 byte var11 = (byte)((int)((double)(var6 * 2.0F) + 0.5D)); 140 byte var12 = (byte)((int)((double)var4.entityplayerObj.rotationYaw * 16.0D / 360.0D)); 141 142 if (this.dimension < 0) 143 { 144 int var13 = this.randomEffect / 10; 145 var12 = (byte)(var13 * var13 * 34187121 + var13 * 121 >> 15 & 15); 146 } 147 148 if (var4.entityplayerObj.dimension == this.dimension) 149 { 150 this.playersVisibleOnMap.add(new MapCoord(this, var9, var10, var11, var12)); 151 } 152 } 153 } 154 else 155 { 156 this.playersHashMap.remove(var4.entityplayerObj); 157 this.playersArrayList.remove(var4); 158 } 159 } 160 } 161 162 public byte[] func_76193_a(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer) 163 { 164 MapInfo var4 = (MapInfo)this.playersHashMap.get(par3EntityPlayer); 165 return var4 == null ? null : var4.getPlayersOnMap(par1ItemStack); 166 } 167 168 public void func_76194_a(int par1, int par2, int par3) 169 { 170 super.markDirty(); 171 172 for (int var4 = 0; var4 < this.playersArrayList.size(); ++var4) 173 { 174 MapInfo var5 = (MapInfo)this.playersArrayList.get(var4); 175 176 if (var5.field_76209_b[par1] < 0 || var5.field_76209_b[par1] > par2) 177 { 178 var5.field_76209_b[par1] = par2; 179 } 180 181 if (var5.field_76210_c[par1] < 0 || var5.field_76210_c[par1] < par3) 182 { 183 var5.field_76210_c[par1] = par3; 184 } 185 } 186 } 187 188 @SideOnly(Side.CLIENT) 189 190 /** 191 * Updates the client's map with information from other players in MP 192 */ 193 public void updateMPMapData(byte[] par1ArrayOfByte) 194 { 195 int var2; 196 197 if (par1ArrayOfByte[0] == 0) 198 { 199 var2 = par1ArrayOfByte[1] & 255; 200 int var3 = par1ArrayOfByte[2] & 255; 201 202 for (int var4 = 0; var4 < par1ArrayOfByte.length - 3; ++var4) 203 { 204 this.colors[(var4 + var3) * 128 + var2] = par1ArrayOfByte[var4 + 3]; 205 } 206 207 this.markDirty(); 208 } 209 else if (par1ArrayOfByte[0] == 1) 210 { 211 this.playersVisibleOnMap.clear(); 212 213 for (var2 = 0; var2 < (par1ArrayOfByte.length - 1) / 3; ++var2) 214 { 215 byte var7 = (byte)(par1ArrayOfByte[var2 * 3 + 1] % 16); 216 byte var8 = par1ArrayOfByte[var2 * 3 + 2]; 217 byte var5 = par1ArrayOfByte[var2 * 3 + 3]; 218 byte var6 = (byte)(par1ArrayOfByte[var2 * 3 + 1] / 16); 219 this.playersVisibleOnMap.add(new MapCoord(this, var7, var8, var5, var6)); 220 } 221 } 222 } 223 }