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tweaked NDP behavior for beta 2

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- more accurate seeking to enable scrubbing
- rate-limiting is now the mod's reponsability
- using the same FULL_SNAPSHOT_INTERVAL in all builds to make bugs less difficult to track
This commit is contained in:
myT 2023-04-04 22:52:16 +02:00
parent 8ed8d26481
commit ab44152713
1 changed files with 16 additions and 14 deletions
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30
code/client/cl_demo.cpp
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@ -102,11 +102,7 @@ There's no need to make the player more complex for such an edge case.
#endif #endif
#if defined(_DEBUG)
#define FULL_SNAPSHOT_INTERVAL_MS (1 * 1000)
#else
#define FULL_SNAPSHOT_INTERVAL_MS (8 * 1000) #define FULL_SNAPSHOT_INTERVAL_MS (8 * 1000)
#endif
#define MAX_COMMANDS ARRAY_LEN(demo.commands) #define MAX_COMMANDS ARRAY_LEN(demo.commands)
@ -933,6 +929,14 @@ static void ReadNextSnapshot()
} }
static int PeekNextSnapshotTime()
{
const int serverTime = demo.nextSnap != NULL ? demo.nextSnap->serverTime : INT_MIN;
return serverTime;
}
static void AddCommand( const char* string ) static void AddCommand( const char* string )
{ {
PrintCmd(string); PrintCmd(string);
@ -1170,12 +1174,7 @@ qbool CL_NDP_GetServerCommand( int serverCommandNumber )
int CL_NDP_Seek( int serverTime ) int CL_NDP_Seek( int serverTime )
{ {
// rate-limit the command to avoid lags etc. const int seekStartTime = Sys_Milliseconds();
static int prevSeekTime = 0;
const int currSeekTime = Sys_Milliseconds();
if (currSeekTime <= prevSeekTime + 100) {
return INT_MIN;
}
// figure out which full snapshot we want to jump to // figure out which full snapshot we want to jump to
int index = 0; int index = 0;
@ -1201,8 +1200,13 @@ int CL_NDP_Seek( int serverTime )
SeekToIndex(index); SeekToIndex(index);
// read more snapshots until we're close to the target time for more precise jumps // read more snapshots until we're close to the target time for more precise jumps
// we want the the closest snapshot whose time is less or equal to the target time
int numSnapshotsRead = 2; int numSnapshotsRead = 2;
while (!demo.isLastSnapshot && demo.currSnap->serverTime < serverTime) { while (!demo.isLastSnapshot) {
const int nextServerTime = PeekNextSnapshotTime();
if (nextServerTime == INT_MIN || nextServerTime > serverTime) {
break;
}
// add all commands from the snapshot we're about to evict // add all commands from the snapshot we're about to evict
PrintCmdListBegin("evicted snap commands"); PrintCmdListBegin("evicted snap commands");
AddAllCommands(&demo.currSnap->serverCommands); AddAllCommands(&demo.currSnap->serverCommands);
@ -1212,9 +1216,7 @@ int CL_NDP_Seek( int serverTime )
} }
Com_DPrintf("New Demo Player: sought and read %d snaps in %d ms\n", Com_DPrintf("New Demo Player: sought and read %d snaps in %d ms\n",
numSnapshotsRead, Sys_Milliseconds() - currSeekTime); numSnapshotsRead, Sys_Milliseconds() - seekStartTime);
prevSeekTime = currSeekTime;
return demo.currSnap->serverTime; return demo.currSnap->serverTime;
} }