private void FillInputWithLastFrame(ServerFrame frame)
{
int tick = frame.tick;
var inputs = frame.Inputs;
var lastFrameInputs = tick == 0 ? null : cmdBuffer.GetFrame(tick - 1)?.Inputs;
var curFrameInput = inputs[_localActorId];
//将所有角色 给予默认的输入
for (int i = 0; i < _actorCount; i++)
{
inputs[i] = new Msg_PlayerInput(tick, _allActors[i], lastFrameInputs?[i]?.Commands?.ToList());
}
inputs[_localActorId] = curFrameInput;
}
private void Step()
{
if (_constStateService.IsClientMode)
{
var input = new Msg_PlayerInput(_world.Tick, _localActorId, _inputService.GetInputCmds());
var frame = new ServerFrame()
{
tick = _world.Tick,
_inputs = new Msg_PlayerInput[] { input }
};
_cmdBuffer.PushLocalFrame(frame);
_cmdBuffer.PushServerFrames(new ServerFrame[] { frame });
_cmdBuffer.UpdateFramesInfo();
Simulate(_cmdBuffer.GetFrame(_world.Tick));
return;
}
//cmdBuffer.Ping = _gameMsgService.Ping;
_cmdBuffer.UpdateFramesInfo();
var missFrameTick = _cmdBuffer.GetMissServerFrameTick();
//客户端落后服务器太多帧 请求丢失帧
if (_cmdBuffer.IsNeedReqMissFrame())
{
_networkService.SendMissFrameReq(missFrameTick);
}
//if (!cmdBuffer.CanExecuteNextFrame()) { //因为网络问题 需要等待服务器发送确认包 才能继续往前
// return;
//}
_frameDeadline = LTime.realtimeSinceStartup + MaxSimulationMsPerFrame;
var minTickToBackup = missFrameTick - FrameBuffer.SnapshotFrameInterval;
//追帧 无输入
var isPursueServer = !PursueServer(minTickToBackup);
if (isPursueServer)
{
_constStateService.IsPursueFrame = true;
Debug.Log($"PurchaseServering curTick:" + _world.Tick);
EventHelper.Trigger(EEvent.PursueFrameProcess, GetPursueProgress());
return;
}
if (_constStateService.IsPursueFrame)
{
EventHelper.Trigger(EEvent.PursueFrameDone);
}
_constStateService.IsPursueFrame = false;
var frameDeltaTime = (LTime.realtimeSinceStartup - _timestampOnPurcue) * 1000;
var targetTick = (float)System.Math.Ceiling(frameDeltaTime / NetworkDefine.UPDATE_DELTATIME) +
_tickOnPursue;
//正常跑帧
while (_world.Tick < targetTick)
{
var curTick = _world.Tick;
_cmdBuffer.UpdateFramesInfo();
//校验服务器包 如果有预测失败 则需要进行回滚
if (_cmdBuffer.IsNeedRollback)
{
_world.RollbackTo(_cmdBuffer.nextTickToCheck, missFrameTick);
_world.CleanUselessSnapshot(System.Math.Min(_cmdBuffer.nextTickToCheck - 1, _world.Tick));
minTickToBackup = System.Math.Max(minTickToBackup, _world.Tick + 1);
while (_world.Tick < missFrameTick)
{
var sFrame = _cmdBuffer.GetServerFrame(_world.Tick);
Logging.Debug.Assert(sFrame != null && sFrame.tick == _world.Tick,
$" logic error: server Frame must exist tick {_world.Tick}");
//服务器超前 客户端 应该追上去 将服务器中的输入作为客户端输入
_cmdBuffer.PushLocalFrame(sFrame);
Simulate(sFrame, _world.Tick >= minTickToBackup);
}
while (_world.Tick < curTick)
{
var frame = _cmdBuffer.GetLocalFrame(_world.Tick);
FillInputWithLastFrame(frame); //加上输入预判 减少回滚
Logging.Debug.Assert(frame != null && frame.tick == _world.Tick,
$" logic error: local frame must exist tick {_world.Tick}");
Predict(frame, _world.Tick > minTickToBackup);
}
}
{
if (_world.Tick == curTick) //当前帧 没有被执行 需要执行之
{
ServerFrame cFrame = null;
var sFrame = _cmdBuffer.GetServerFrame(_world.Tick);
if (sFrame != null)
{
cFrame = sFrame;
}
else
{
var input = new Msg_PlayerInput(curTick, _localActorId, _inputService.GetInputCmds());
cFrame = new ServerFrame();
var inputs = new Msg_PlayerInput[_actorCount];
inputs[_localActorId] = input;
cFrame.Inputs = inputs;
cFrame.tick = curTick;
FillInputWithLastFrame(cFrame);
if (curTick > _cmdBuffer.maxServerTickInBuffer) //服务器的输入还没到 需要同步输入到服务器
{
SendInput(input);
}
}
_cmdBuffer.PushLocalFrame(cFrame);
Predict(cFrame);
}
}
} //end of while(_world.Tick < targetTick)
CheckAndSendHashCodes();
}
