SPIGOT-212: Modify the vanilla change gamemode method to call our version

nms-patches/EntityPlayer.patch

@@ -1,5 +1,5 @@
---- ../work/decompile-8eb82bde/net/minecraft/server/EntityPlayer.java	2014-12-12 19:26:14.249913563 +0000
-+++ src/main/java/net/minecraft/server/EntityPlayer.java	2014-12-12 19:25:07.997914283 +0000
+--- ../work/decompile-8eb82bde/net/minecraft/server/EntityPlayer.java	2014-12-15 14:13:24.430966154 +0000
++++ src/main/java/net/minecraft/server/EntityPlayer.java	2014-12-15 14:13:24.434966154 +0000
 @@ -13,6 +13,17 @@
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
@@ -446,7 +446,24 @@
  
      public void b(IChatBaseComponent ichatbasecomponent) {
          this.playerConnection.sendPacket(new PacketPlayOutChat(ichatbasecomponent));
-@@ -768,6 +936,7 @@
+@@ -747,6 +915,8 @@
+     }
+ 
+     public void a(EnumGamemode enumgamemode) {
++        getBukkitEntity().setGameMode(org.bukkit.GameMode.getByValue(enumgamemode.getId()));
++        /* CraftBukkit start - defer to our setGameMode
+         this.playerInteractManager.setGameMode(enumgamemode);
+         this.playerConnection.sendPacket(new PacketPlayOutGameStateChange(3, (float) enumgamemode.getId()));
+         if (enumgamemode == EnumGamemode.SPECTATOR) {
+@@ -757,6 +927,7 @@
+ 
+         this.updateAbilities();
+         this.bO();
++        // CraftBukkit end */
+     }
+ 
+     public boolean v() {
+@@ -768,6 +939,7 @@
      }
  
      public boolean a(int i, String s) {
@@ -454,7 +471,7 @@
          if ("seed".equals(s) && !this.server.ad()) {
              return true;
          } else if (!"tell".equals(s) && !"help".equals(s) && !"me".equals(s) && !"trigger".equals(s)) {
-@@ -781,6 +950,9 @@
+@@ -781,6 +953,9 @@
          } else {
              return true;
          }
@@ -464,7 +481,7 @@
      }
  
      public String w() {
-@@ -867,6 +1039,129 @@
+@@ -867,6 +1042,129 @@
      }
  
      public IChatBaseComponent getPlayerListName() {