Added per player time support. Thanks eisental, Shamebot and needspeed10!

src/main/java/net/minecraft/server/EntityPlayer.java

@@ -483,6 +483,19 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
     }
 
     // CraftBukkit start
+    public long timeOffset = 0;
+    public boolean relativeTime = true;
+
+    public long getPlayerTime() {
+        if (relativeTime) {
+            // Adds timeOffset to the current server time.
+            return world.getTime() + timeOffset;
+        } else {
+            // Adds timeOffset to the beginning of this day.
+            return world.getTime() - (world.getTime() % 24000) + timeOffset;
+        }
+    }
+
     @Override
     public String toString() {
         return super.toString() + "(" + name + " at " + locX + "," + locY + "," + locZ + ")";

src/main/java/net/minecraft/server/MinecraftServer.java

@@ -411,7 +411,7 @@ public class MinecraftServer implements Runnable, ICommandListener {
                     // CraftBukkit start - only send timeupdates to the people in that world
                     for (int i = 0; i < this.serverConfigurationManager.players.size(); ++i) {
                         EntityPlayer entityplayer = (EntityPlayer) this.serverConfigurationManager.players.get(i);
-                        entityplayer.netServerHandler.sendPacket(new Packet4UpdateTime(entityplayer.world.getTime()));
+                        entityplayer.netServerHandler.sendPacket(new Packet4UpdateTime(entityplayer.getPlayerTime())); // Add support for per player time
                     }
                 }
 

src/main/java/net/minecraft/server/NetLoginHandler.java

@@ -97,7 +97,7 @@ public class NetLoginHandler extends NetHandler {
             this.server.serverConfigurationManager.c(entityplayer);
             netserverhandler.a(entityplayer.locX, entityplayer.locY, entityplayer.locZ, entityplayer.yaw, entityplayer.pitch);
             this.server.networkListenThread.a(netserverhandler);
-            netserverhandler.sendPacket(new Packet4UpdateTime(worldserver.getTime()));
+            netserverhandler.sendPacket(new Packet4UpdateTime(entityplayer.getPlayerTime())); // CraftBukkit - add support for player specific time
             entityplayer.syncInventory();
         }
 

src/main/java/org/bukkit/craftbukkit/CraftWorld.java

@@ -424,7 +424,7 @@ public class CraftWorld implements World {
         // Forces the client to update to the new time immediately
         for (Player p: getPlayers()) {
             CraftPlayer cp = (CraftPlayer) p;
-            cp.getHandle().netServerHandler.sendPacket(new Packet4UpdateTime(time));
+            cp.getHandle().netServerHandler.sendPacket(new Packet4UpdateTime(cp.getHandle().getPlayerTime()));
         }
     }
 

src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java

@@ -297,4 +297,25 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
 
         getHandle().netServerHandler.sendPacket(new Packet200Statistic(id, amount));
     }
+
+    public void setPlayerTime(long time, boolean relative) {
+        getHandle().timeOffset = time;
+        getHandle().relativeTime = relative;
+    }
+
+    public long getPlayerTimeOffset() {
+        return getHandle().timeOffset;
+    }
+
+    public long getPlayerTime() {
+        return getHandle().getPlayerTime();
+    }
+
+    public boolean isPlayerTimeRelative() {
+        return getHandle().relativeTime;
+    }
+
+    public void resetPlayerTime() {
+        setPlayerTime(0, true);
+    }
 }