Test_Project_Cocos/DelayNoMore
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Fixes for UDP use in input prediction.

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genxium
2023-01-31 22:39:21 +08:00
parent 8de2d6e4e7
commit e3440a2a06
5 changed files with 65 additions and 29 deletions
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60
frontend/assets/scripts/Map.js
View File

@@ -46,7 +46,7 @@ window.onUdpMessage = (args) => {
const renderedInputFrameIdUpper = gopkgs.ConvertToDelayedInputFrameId(self.renderFrameId);
const peerJoinIndex = req.joinIndex;
const batch = req.inputFrameUpsyncBatch;
self.onPeerInputFrameUpsync(peerJoinIndex, batch);
self.onPeerInputFrameUpsync(peerJoinIndex, batch, true);
}
}
};
@@ -166,16 +166,10 @@ cc.Class({
return [previousSelfInput, existingInputFrame.InputList[joinIndex - 1]];
}
const lastAllConfirmedInputFrame = self.recentInputCache.GetByFrameId(self.lastAllConfirmedInputFrameId);
const prefabbedInputList = new Array(self.playerRichInfoDict.size).fill(0);
// the returned "gopkgs.NewInputFrameDownsync.InputList" is immutable, thus we can only modify the values in "prefabbedInputList"
for (let k in prefabbedInputList) {
if (null != previousInputFrameDownsync) {
prefabbedInputList[k] = previousInputFrameDownsync.InputList[k];
}
if (0 <= self.lastAllConfirmedInputFrameId && inputFrameId - 1 > self.lastAllConfirmedInputFrameId) {
prefabbedInputList[k] = lastAllConfirmedInputFrame.InputList[k];
}
prefabbedInputList[k] = self.lastIndividuallyConfirmedInputList[k];
// Don't predict "btnA & btnB"!
prefabbedInputList[k] = (prefabbedInputList[k] & 15);
}
@@ -355,6 +349,8 @@ cc.Class({
self.lastUpsyncInputFrameId = -1;
self.chaserRenderFrameId = -1; // at any moment, "chaserRenderFrameId <= renderFrameId", but "chaserRenderFrameId" would fluctuate according to "onInputFrameDownsyncBatch"
self.lastIndividuallyConfirmedInputFrameId = new Array(window.boundRoomCapacity).fill(-1);
self.lastIndividuallyConfirmedInputList = new Array(window.boundRoomCapacity).fill(0);
self.recentRenderCache = new RingBuffer(self.renderCacheSize);
self.recentInputCache = gopkgs.NewRingBufferJs((self.renderCacheSize >> 1) + 1);
@@ -814,6 +810,16 @@ cc.Class({
return true;
},
_markConfirmationIfApplicable() {
const self = this;
while (self.recentInputCache.StFrameId <= self.lastAllConfirmedInputFrameId && self.lastAllConfirmedInputFrameId < self.recentInputCache.EdFrameId) {
const inputFrameDownsync = self.recentInputCache.GetByFrameId(self.lastAllConfirmedInputFrameId);
if (null == inputFrameDownsync) break;
if (self._allConfirmed(inputFrameDownsync.ConfirmedList)) break;
++self.lastAllConfirmedInputFrameId;
}
},
onInputFrameDownsyncBatch(batch /* []*pb.InputFrameDownsync */ ) {
// TODO: find some kind of synchronization mechanism against "getOrPrefabInputFrameUpsync"!
if (null == batch) {
@@ -835,8 +841,6 @@ cc.Class({
if (inputFrameDownsyncId <= self.lastAllConfirmedInputFrameId) {
continue;
}
// [WARNING] Take all "inputFrameDownsync" from backend as all-confirmed, it'll be later checked by "rollbackAndChase".
self.lastAllConfirmedInputFrameId = inputFrameDownsyncId;
const localInputFrame = self.recentInputCache.GetByFrameId(inputFrameDownsyncId);
if (null != localInputFrame
&&
@@ -846,14 +850,23 @@ cc.Class({
) {
firstPredictedYetIncorrectInputFrameId = inputFrameDownsyncId;
}
// [WARNING] Take all "inputFrameDownsync" from backend as all-confirmed, it'll be later checked by "rollbackAndChase".
inputFrameDownsync.confirmedList = (1 << self.playerRichInfoDict.size) - 1;
const inputFrameDownsyncLocal = gopkgs.NewInputFrameDownsync(inputFrameDownsync.inputFrameId, inputFrameDownsync.inputList, inputFrameDownsync.confirmedList); // "battle.InputFrameDownsync" in "jsexport"
for (let j in self.playerRichInfoArr) {
const jj = parseInt(j);
if (inputFrameDownsync.inputFrameId > self.lastIndividuallyConfirmedInputFrameId[jj]) {
self.lastIndividuallyConfirmedInputFrameId[jj] = inputFrameDownsync.inputFrameId;
self.lastIndividuallyConfirmedInputList[jj] = inputFrameDownsync.inputList[jj];
}
}
//console.log(`Confirmed inputFrameId=${inputFrameDownsync.inputFrameId}`);
const [ret, oldStFrameId, oldEdFrameId] = self.recentInputCache.SetByFrameId(inputFrameDownsyncLocal, inputFrameDownsync.inputFrameId);
if (window.RING_BUFF_FAILED_TO_SET == ret) {
throw `Failed to dump input cache (maybe recentInputCache too small)! inputFrameDownsync.inputFrameId=${inputFrameDownsync.inputFrameId}, lastAllConfirmedInputFrameId=${self.lastAllConfirmedInputFrameId}; recentRenderCache=${self._stringifyRecentRenderCache(false)}, recentInputCache=${self._stringifyRecentInputCache(false)}`;
}
}
self._markConfirmationIfApplicable();
if (null == firstPredictedYetIncorrectInputFrameId) return;
const renderFrameId1 = gopkgs.ConvertToFirstUsedRenderFrameId(firstPredictedYetIncorrectInputFrameId) - 1;
@@ -879,7 +892,7 @@ batchInputFrameIdRange=[${batch[0].inputFrameId}, ${batch[batch.length - 1].inpu
self.networkDoctor.logRollbackFrames(self.renderFrameId - self.chaserRenderFrameId);
},
onPeerInputFrameUpsync(peerJoinIndex, batch /* []*pb.InputFrameDownsync */ ) {
onPeerInputFrameUpsync(peerJoinIndex, batch, fromUDP) {
// TODO: find some kind of synchronization mechanism against "getOrPrefabInputFrameUpsync"!
// See `<proj-root>/ConcerningEdgeCases.md` for why this method exists.
if (null == batch) {
@@ -897,32 +910,39 @@ batchInputFrameIdRange=[${batch[0].inputFrameId}, ${batch[batch.length - 1].inpu
//console.log(`Received peer inputFrameUpsync batch w/ inputFrameId in [${batch[0].inputFrameId}, ${batch[batch.length - 1].inputFrameId}] for prediction assistance`);
const renderedInputFrameIdUpper = gopkgs.ConvertToDelayedInputFrameId(self.renderFrameId);
for (let k in batch) {
const inputFrameDownsync = batch[k];
const inputFrameDownsyncId = inputFrameDownsync.inputFrameId;
if (inputFrameDownsyncId < renderedInputFrameIdUpper) {
const inputFrame = batch[k]; // could be either "pb.InputFrameDownsync" or "pb.InputFrameUpsync", depending on "fromUDP"
const inputFrameId = inputFrame.inputFrameId;
if (inputFrameId < renderedInputFrameIdUpper) {
// Avoid obfuscating already rendered history
continue;
}
if (inputFrameDownsyncId <= self.lastAllConfirmedInputFrameId) {
if (inputFrameId <= self.lastAllConfirmedInputFrameId) {
// [WARNING] Don't reject it by "inputFrameId <= self.lastIndividuallyConfirmedInputFrameId[peerJoinIndex-1]", the arrival of UDP packets might not reserve their sending order!
continue;
}
self.getOrPrefabInputFrameUpsync(inputFrameDownsyncId); // Make sure that inputFrame exists locally
const existingInputFrame = self.recentInputCache.GetByFrameId(inputFrameDownsyncId);
self.getOrPrefabInputFrameUpsync(inputFrameId); // Make sure that inputFrame exists locally
const existingInputFrame = self.recentInputCache.GetByFrameId(inputFrameId);
if (0 < (existingInputFrame.ConfirmedList & (1 << (peerJoinIndex - 1)))) {
continue;
}
const peerEncodedInput = (true == fromUDP ? inputFrame.encoded : inputFrame.inputList[peerJoinIndex - 1]);
if (inputFrameId > self.lastIndividuallyConfirmedInputFrameId[peerJoinIndex - 1]) {
self.lastIndividuallyConfirmedInputFrameId[peerJoinIndex - 1] = inputFrameId;
self.lastIndividuallyConfirmedInputList[peerJoinIndex - 1] = peerEncodedInput;
}
effCnt += 1;
// the returned "gopkgs.NewInputFrameDownsync.InputList" is immutable, thus we can only modify the values in "newInputList" and "newConfirmedList"!
let newInputList = new Array(self.playerRichInfoDict.size).fill(0);
for (let i in existingInputFrame.InputList) {
newInputList[i] = existingInputFrame.InputList[i];
}
newInputList[peerJoinIndex - 1] = peerEncodedInput;
let newConfirmedList = (existingInputFrame.confirmedList | (1 << (peerJoinIndex - 1)));
// No need to change "lastAllConfirmedInputFrameId", leave it to "onInputFrameDownsyncBatch" -- we're just helping prediction here
const newInputFrameDownsyncLocal = gopkgs.NewInputFrameDownsync(inputFrameDownsyncId, newInputList, newConfirmedList);
self.recentInputCache.SetByFrameId(newInputFrameDownsyncLocal, inputFrameDownsyncId);
const newInputFrameDownsyncLocal = gopkgs.NewInputFrameDownsync(inputFrameId, newInputList, newConfirmedList);
self.recentInputCache.SetByFrameId(newInputFrameDownsyncLocal, inputFrameId);
}
if (0 < effCnt) {
self._markConfirmationIfApplicable();
self.networkDoctor.logPeerInputFrameUpsync(batch[0].inputFrameId, batch[batch.length - 1].inputFrameId);
}
},

2
frontend/assets/scripts/WsSessionMgr.js
View File

@@ -335,7 +335,7 @@ window.initSecondarySession = function(onopenCb, boundRoomId) {
//console.log(`Got non-empty onmessage decoded: resp.act=${resp.act}`);
switch (resp.act) {
case window.DOWNSYNC_MSG_ACT_PEER_INPUT_BATCH:
mapIns.onPeerInputFrameUpsync(resp.peerJoinIndex, resp.inputFrameDownsyncBatch);
mapIns.onPeerInputFrameUpsync(resp.peerJoinIndex, resp.inputFrameDownsyncBatch, false);
break;
default:
break;