Support termux & armbian server

Kami telah mengoptimasi agar bisa berjalan diperangkat.
dan kami tidak menggunakan world flat

server/server.go

@@ -506,7 +506,7 @@ func (srv *Server) defaultGameData() minecraft.GameData {
 		GameRules: []protocol.GameRule{
 			{Name: "naturalregeneration", Value: false},
 			{Name: "locatorBar", Value: false},
-			{Name: "spawnradius", Value: int32(0)},
+			{Name: "spawnradius", Value: uint32(0)},
 		},
 
 		ServerAuthoritativeInventory: true,