static {
final String[] parts = Bukkit.class.getName().split(".");
if (parts.length == 4) {
InventoryUtil.version = "";
} else {
InventoryUtil.version = "." + parts[4];
}
Field tiinv = null;
Field ttitle = null;
Field thandle = null;
Field tcontainerCounter = null;
Constructor<?> topenWindowPacket = null;
Field tplayerConnection = null;
Method tsendPacket;
try {
tiinv =
getVersionedClass("org.bukkit.craftbukkit.inventory.CraftInventory")
.getDeclaredField("inventory");
tiinv.setAccessible(true);
ttitle =
getVersionedClass(
"org.bukkit.craftbukkit.inventory.CraftInventoryCustom$MinecraftInventory")
.getDeclaredField("title");
ttitle.setAccessible(true);
thandle =
getVersionedClass("org.bukkit.craftbukkit.entity.CraftEntity").getDeclaredField("handle");
thandle.setAccessible(true);
tcontainerCounter =
getVersionedClass("net.minecraft.server.EntityPlayer")
.getDeclaredField("containerCounter");
tcontainerCounter.setAccessible(true);
thandle =
getVersionedClass("org.bukkit.craftbukkit.entity.CraftEntity").getDeclaredField("handle");
thandle.setAccessible(true);
topenWindowPacket =
getVersionedClass("net.minecraft.server.PacketPlayOutOpenWindow")
.getDeclaredConstructor(
Integer.TYPE, Integer.TYPE, String.class, Integer.TYPE, Boolean.TYPE);
topenWindowPacket.setAccessible(true);
tplayerConnection =
getVersionedClass("net.minecraft.server.EntityPlayer")
.getDeclaredField("playerConnection");
tplayerConnection.setAccessible(true);
tsendPacket =
getVersionedClass("net.minecraft.server.PlayerConnection")
.getDeclaredMethod(
"sendPacket", topenWindowPacket.getDeclaringClass().getSuperclass());
tsendPacket.setAccessible(true);
} catch (Exception ex) {
throw new ExceptionInInitializerError(ex);
}
iinvField = tiinv;
titleField = ttitle;
handleField = thandle;
containerCounterField = tcontainerCounter;
openWindowPacketConstructor = topenWindowPacket;
playerConnectionField = tplayerConnection;
sendPacket = tsendPacket;
}
private static Method getMethod(final Class<?> clazz, final String name, final Class<?>... args) {
Method[] methods;
for (int length = (methods = clazz.getMethods()).length, i = 0; i < length; ++i) {
final Method m = methods[i];
if (m.getName().equals(name)
&& (args.length == 0 || ClassListEqual(args, m.getParameterTypes()))) {
m.setAccessible(true);
return m;
}
}
return null;
}
