diff options
Diffstat (limited to 'core')
| -rw-r--r-- | core/io/multiplayer_peer.cpp | 24 | ||||
| -rw-r--r-- | core/io/multiplayer_peer.h | 1 |
2 files changed, 25 insertions, 0 deletions
diff --git a/core/io/multiplayer_peer.cpp b/core/io/multiplayer_peer.cpp index 8126b4cea3..8b3b1eef8e 100644 --- a/core/io/multiplayer_peer.cpp +++ b/core/io/multiplayer_peer.cpp @@ -30,6 +30,29 @@ #include "multiplayer_peer.h" +#include "core/os/os.h" + +uint32_t MultiplayerPeer::generate_unique_id() const { + uint32_t hash = 0; + + while (hash == 0 || hash == 1) { + hash = hash_djb2_one_32( + (uint32_t)OS::get_singleton()->get_ticks_usec()); + hash = hash_djb2_one_32( + (uint32_t)OS::get_singleton()->get_unix_time(), hash); + hash = hash_djb2_one_32( + (uint32_t)OS::get_singleton()->get_user_data_dir().hash64(), hash); + hash = hash_djb2_one_32( + (uint32_t)((uint64_t)this), hash); // Rely on ASLR heap + hash = hash_djb2_one_32( + (uint32_t)((uint64_t)&hash), hash); // Rely on ASLR stack + + hash = hash & 0x7FFFFFFF; // Make it compatible with unsigned, since negative ID is used for exclusion + } + + return hash; +} + void MultiplayerPeer::_bind_methods() { ClassDB::bind_method(D_METHOD("set_transfer_mode", "mode"), &MultiplayerPeer::set_transfer_mode); ClassDB::bind_method(D_METHOD("get_transfer_mode"), &MultiplayerPeer::get_transfer_mode); @@ -41,6 +64,7 @@ void MultiplayerPeer::_bind_methods() { ClassDB::bind_method(D_METHOD("get_connection_status"), &MultiplayerPeer::get_connection_status); ClassDB::bind_method(D_METHOD("get_unique_id"), &MultiplayerPeer::get_unique_id); + ClassDB::bind_method(D_METHOD("generate_unique_id"), &MultiplayerPeer::generate_unique_id); ClassDB::bind_method(D_METHOD("set_refuse_new_connections", "enable"), &MultiplayerPeer::set_refuse_new_connections); ClassDB::bind_method(D_METHOD("is_refusing_new_connections"), &MultiplayerPeer::is_refusing_new_connections); diff --git a/core/io/multiplayer_peer.h b/core/io/multiplayer_peer.h index 432f47280f..91a3ad7954 100644 --- a/core/io/multiplayer_peer.h +++ b/core/io/multiplayer_peer.h @@ -72,6 +72,7 @@ public: virtual bool is_refusing_new_connections() const = 0; virtual ConnectionStatus get_connection_status() const = 0; + uint32_t generate_unique_id() const; MultiplayerPeer() {} }; |