001 package net.minecraft.src; 002 003 import java.util.ArrayList; 004 import java.util.List; 005 006 public class PlayerManager 007 { 008 private final WorldServer theWorldServer; 009 010 /** players in the current instance */ 011 private final List players = new ArrayList(); 012 013 /** 014 * A map of chunk position (two ints concatenated into a long) to PlayerInstance 015 */ 016 private final LongHashMap playerInstances = new LongHashMap(); 017 018 /** 019 * contains a PlayerInstance for every chunk they can see. the "player instance" cotains a list of all players who 020 * can also that chunk 021 */ 022 private final List chunkWatcherWithPlayers = new ArrayList(); 023 024 /** 025 * Number of chunks the server sends to the client. Valid 3<=x<=15. In server.properties. 026 */ 027 private final int playerViewRadius; 028 029 /** x, z direction vectors: east, south, west, north */ 030 private final int[][] xzDirectionsConst = new int[][] {{1, 0}, {0, 1}, { -1, 0}, {0, -1}}; 031 032 public PlayerManager(WorldServer par1WorldServer, int par2) 033 { 034 if (par2 > 15) 035 { 036 throw new IllegalArgumentException("Too big view radius!"); 037 } 038 else if (par2 < 3) 039 { 040 throw new IllegalArgumentException("Too small view radius!"); 041 } 042 else 043 { 044 this.playerViewRadius = par2; 045 this.theWorldServer = par1WorldServer; 046 } 047 } 048 049 public WorldServer getWorldServer() 050 { 051 return this.theWorldServer; 052 } 053 054 /** 055 * updates all the player instances that need to be updated 056 */ 057 public void updatePlayerInstances() 058 { 059 for (int var1 = 0; var1 < this.chunkWatcherWithPlayers.size(); ++var1) 060 { 061 ((PlayerInstance)this.chunkWatcherWithPlayers.get(var1)).sendChunkUpdate(); 062 } 063 064 this.chunkWatcherWithPlayers.clear(); 065 066 if (this.players.isEmpty()) 067 { 068 WorldProvider var2 = this.theWorldServer.provider; 069 070 if (!var2.canRespawnHere()) 071 { 072 this.theWorldServer.theChunkProviderServer.unloadAllChunks(); 073 } 074 } 075 } 076 077 PlayerInstance getOrCreateChunkWatcher(int par1, int par2, boolean par3) 078 { 079 long var4 = (long)par1 + 2147483647L | (long)par2 + 2147483647L << 32; 080 PlayerInstance var6 = (PlayerInstance)this.playerInstances.getValueByKey(var4); 081 082 if (var6 == null && par3) 083 { 084 var6 = new PlayerInstance(this, par1, par2); 085 this.playerInstances.add(var4, var6); 086 } 087 088 return var6; 089 } 090 091 /** 092 * the "PlayerInstance"/ chunkWatcher will send this chunk to all players who are in line of sight 093 */ 094 public void flagChunkForUpdate(int par1, int par2, int par3) 095 { 096 int var4 = par1 >> 4; 097 int var5 = par3 >> 4; 098 PlayerInstance var6 = this.getOrCreateChunkWatcher(var4, var5, false); 099 100 if (var6 != null) 101 { 102 var6.flagChunkForUpdate(par1 & 15, par2, par3 & 15); 103 } 104 } 105 106 /** 107 * Adds an EntityPlayerMP to the PlayerManager. 108 */ 109 public void addPlayer(EntityPlayerMP par1EntityPlayerMP) 110 { 111 int var2 = (int)par1EntityPlayerMP.posX >> 4; 112 int var3 = (int)par1EntityPlayerMP.posZ >> 4; 113 par1EntityPlayerMP.managedPosX = par1EntityPlayerMP.posX; 114 par1EntityPlayerMP.managedPosZ = par1EntityPlayerMP.posZ; 115 116 for (int var4 = var2 - this.playerViewRadius; var4 <= var2 + this.playerViewRadius; ++var4) 117 { 118 for (int var5 = var3 - this.playerViewRadius; var5 <= var3 + this.playerViewRadius; ++var5) 119 { 120 this.getOrCreateChunkWatcher(var4, var5, true).addPlayerToChunkWatchingList(par1EntityPlayerMP); 121 } 122 } 123 124 this.players.add(par1EntityPlayerMP); 125 this.func_72691_b(par1EntityPlayerMP); 126 } 127 128 public void func_72691_b(EntityPlayerMP par1EntityPlayerMP) 129 { 130 ArrayList var2 = new ArrayList(par1EntityPlayerMP.loadedChunks); 131 int var3 = 0; 132 int var4 = this.playerViewRadius; 133 int var5 = (int)par1EntityPlayerMP.posX >> 4; 134 int var6 = (int)par1EntityPlayerMP.posZ >> 4; 135 int var7 = 0; 136 int var8 = 0; 137 ChunkCoordIntPair var9 = PlayerInstance.getChunkLocation(this.getOrCreateChunkWatcher(var5, var6, true)); 138 par1EntityPlayerMP.loadedChunks.clear(); 139 140 if (var2.contains(var9)) 141 { 142 par1EntityPlayerMP.loadedChunks.add(var9); 143 } 144 145 int var10; 146 147 for (var10 = 1; var10 <= var4 * 2; ++var10) 148 { 149 for (int var11 = 0; var11 < 2; ++var11) 150 { 151 int[] var12 = this.xzDirectionsConst[var3++ % 4]; 152 153 for (int var13 = 0; var13 < var10; ++var13) 154 { 155 var7 += var12[0]; 156 var8 += var12[1]; 157 var9 = PlayerInstance.getChunkLocation(this.getOrCreateChunkWatcher(var5 + var7, var6 + var8, true)); 158 159 if (var2.contains(var9)) 160 { 161 par1EntityPlayerMP.loadedChunks.add(var9); 162 } 163 } 164 } 165 } 166 167 var3 %= 4; 168 169 for (var10 = 0; var10 < var4 * 2; ++var10) 170 { 171 var7 += this.xzDirectionsConst[var3][0]; 172 var8 += this.xzDirectionsConst[var3][1]; 173 var9 = PlayerInstance.getChunkLocation(this.getOrCreateChunkWatcher(var5 + var7, var6 + var8, true)); 174 175 if (var2.contains(var9)) 176 { 177 par1EntityPlayerMP.loadedChunks.add(var9); 178 } 179 } 180 } 181 182 /** 183 * Removes an EntityPlayerMP from the PlayerManager. 184 */ 185 public void removePlayer(EntityPlayerMP par1EntityPlayerMP) 186 { 187 int var2 = (int)par1EntityPlayerMP.managedPosX >> 4; 188 int var3 = (int)par1EntityPlayerMP.managedPosZ >> 4; 189 190 for (int var4 = var2 - this.playerViewRadius; var4 <= var2 + this.playerViewRadius; ++var4) 191 { 192 for (int var5 = var3 - this.playerViewRadius; var5 <= var3 + this.playerViewRadius; ++var5) 193 { 194 PlayerInstance var6 = this.getOrCreateChunkWatcher(var4, var5, false); 195 196 if (var6 != null) 197 { 198 var6.sendThisChunkToPlayer(par1EntityPlayerMP); 199 } 200 } 201 } 202 203 this.players.remove(par1EntityPlayerMP); 204 } 205 206 private boolean func_72684_a(int par1, int par2, int par3, int par4, int par5) 207 { 208 int var6 = par1 - par3; 209 int var7 = par2 - par4; 210 return var6 >= -par5 && var6 <= par5 ? var7 >= -par5 && var7 <= par5 : false; 211 } 212 213 /** 214 * update chunks around a player being moved by server logic (e.g. cart, boat) 215 */ 216 public void updateMountedMovingPlayer(EntityPlayerMP par1EntityPlayerMP) 217 { 218 int var2 = (int)par1EntityPlayerMP.posX >> 4; 219 int var3 = (int)par1EntityPlayerMP.posZ >> 4; 220 double var4 = par1EntityPlayerMP.managedPosX - par1EntityPlayerMP.posX; 221 double var6 = par1EntityPlayerMP.managedPosZ - par1EntityPlayerMP.posZ; 222 double var8 = var4 * var4 + var6 * var6; 223 224 if (var8 >= 64.0D) 225 { 226 int var10 = (int)par1EntityPlayerMP.managedPosX >> 4; 227 int var11 = (int)par1EntityPlayerMP.managedPosZ >> 4; 228 int var12 = this.playerViewRadius; 229 int var13 = var2 - var10; 230 int var14 = var3 - var11; 231 232 if (var13 != 0 || var14 != 0) 233 { 234 for (int var15 = var2 - var12; var15 <= var2 + var12; ++var15) 235 { 236 for (int var16 = var3 - var12; var16 <= var3 + var12; ++var16) 237 { 238 if (!this.func_72684_a(var15, var16, var10, var11, var12)) 239 { 240 this.getOrCreateChunkWatcher(var15, var16, true).addPlayerToChunkWatchingList(par1EntityPlayerMP); 241 } 242 243 if (!this.func_72684_a(var15 - var13, var16 - var14, var2, var3, var12)) 244 { 245 PlayerInstance var17 = this.getOrCreateChunkWatcher(var15 - var13, var16 - var14, false); 246 247 if (var17 != null) 248 { 249 var17.sendThisChunkToPlayer(par1EntityPlayerMP); 250 } 251 } 252 } 253 } 254 255 this.func_72691_b(par1EntityPlayerMP); 256 par1EntityPlayerMP.managedPosX = par1EntityPlayerMP.posX; 257 par1EntityPlayerMP.managedPosZ = par1EntityPlayerMP.posZ; 258 } 259 } 260 } 261 262 public boolean isPlayerWatchingChunk(EntityPlayerMP par1EntityPlayerMP, int par2, int par3) 263 { 264 PlayerInstance var4 = this.getOrCreateChunkWatcher(par2, par3, false); 265 return var4 == null ? false : PlayerInstance.getPlayersInChunk(var4).contains(par1EntityPlayerMP) && !par1EntityPlayerMP.loadedChunks.contains(PlayerInstance.getChunkLocation(var4)); 266 } 267 268 public static int func_72686_a(int par0) 269 { 270 return par0 * 16 - 16; 271 } 272 273 static WorldServer getWorldServer(PlayerManager par0PlayerManager) 274 { 275 return par0PlayerManager.theWorldServer; 276 } 277 278 static LongHashMap getChunkWatchers(PlayerManager par0PlayerManager) 279 { 280 return par0PlayerManager.playerInstances; 281 } 282 283 static List getChunkWatchersWithPlayers(PlayerManager par0PlayerManager) 284 { 285 return par0PlayerManager.chunkWatcherWithPlayers; 286 } 287 }