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[Net] Add generate_unique_id to MultiplayerPeer.

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Used by ENetMultiplayerPeer and WebSocketServer to generate network IDs,
and exposed to the user for p2p networks (e.g. WebRTCMultiplayerPeer)
and custom MultiplayerPeer implementations.
This commit is contained in:
Fabio Alessandrelli
2021-07-16 00:43:49 +02:00
parent 4cfa9bc0f1
commit 1e8bf86379
8 changed files with 34 additions and 45 deletions
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20
modules/websocket/websocket_multiplayer_peer.cpp
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@@ -39,26 +39,6 @@ WebSocketMultiplayerPeer::~WebSocketMultiplayerPeer() {
_clear();
}
int WebSocketMultiplayerPeer::_gen_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_data_path().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 WebSocketMultiplayerPeer::_clear() {
_peer_map.clear();
if (_current_packet.data != nullptr) {