JD2022-TU1/main/extern/Camcam/LIBS/Net/NET_PacHis.cpp

#include <windows.h>
#include <stdio.h>
#include "NET.h"

#ifdef NO_WORLD
	typedef struct 
	{
		char *String;
	} CommandLine;

	typedef struct 
	{
		CommandLine BatchExec[2048];
		u32			ulNumberOfCommands;
	} CommandBatch;

	class WORLD
	{
	public:
		CommandBatch	SceneScript_Ecluse;
		int				SceneScript_ADD(CommandBatch *, char* data);
	};
#else
	#include "Scene.h"
#endif

void	NET_Name::Shift(u32 ulShift , NET_IO *pForTrash)
{
	if (ulShift > MAXBUFFERS_PER_NAME) ulShift = MAXBUFFERS_PER_NAME;
	while (ulShift--)
	{
		/* trash unreaded packets */
		if (FIFO[Base]) 
		{
			Number--;
			pForTrash->InputData.THREAD_STACK.Add(FIFO[Base]);
			FIFO[Base] = NULL;
		}
		Base ++;
		if (Base >= MAXBUFFERS_PER_NAME) Base = 0;
	}
}
void	NET_Name::AddPacket(OneBuf	*pBuf, NET_IO *pForTrash,WORLD *OwnerW)
{
	/* Mutex must have been taken!!*/
	s32 Ret;
	if (*((u32 *)pBuf->BufDATA) == 'LINK')
	{
		if(pBuf->Size == 4)
		{
			sprintf(ComputerName,"Unknown");
		}
		if(pBuf->Size == 256 + 4)
		{
			memcpy(ComputerName,&pBuf->BufDATA[4],256);
			ComputerName[255] = 0;
		}
		/*pForTrash->InputData.THREAD_STACK.Add(pBuf);
		return; // Then trash it directos.*/
	}
	if (*((u32 *)pBuf->BufDATA) == 'CODE')
	{
		OwnerW->SceneScript_ADD(&OwnerW->SceneScript_Ecluse,(char*)&pBuf->BufDATA[4]);
	}

	if (pBuf->PacketNumber < (u32)CurrentPacketNumber)
	{
		/* too old -> Trash It direct */
		pForTrash->InputData.THREAD_STACK.Add(pBuf);
		return;
	} 
	if (pBuf->PacketNumber >= (u32)CurrentPacketNumber + MAXBUFFERS_PER_NAME)
	{
		Shift(pBuf->PacketNumber - (CurrentPacketNumber + MAXBUFFERS_PER_NAME) , pForTrash);
		CurrentPacketNumber = pBuf->PacketNumber - MAXBUFFERS_PER_NAME;
	}
	s32 Index;
	Index = Base + pBuf->PacketNumber - CurrentPacketNumber;
	if (Index < 0) 
		Index += MAXBUFFERS_PER_NAME;
	if (Index >= MAXBUFFERS_PER_NAME) 
		Index -= MAXBUFFERS_PER_NAME;
	if (FIFO[Index])
	{
		/* I receive two time the same packet !! */ 
		/* I release it */
		Number--;
		pForTrash->InputData.THREAD_STACK.Add(FIFO[Index]);
	}
	Number++;
	FIFO[Index] = pBuf;
//	PHI.SignifyPacketNumber(pBuf->PacketNumber);

	if (LatestPacketNumber < pBuf->PacketNumber)
		LatestPacketNumber = pBuf->PacketNumber;

};


void	NET_Name::Reset(NET_IO *pOwner)
{
	u32 Counter;
	Counter = MAXBUFFERS_PER_NAME;
	while (Counter--)
	{
		if (FIFO[Counter])
		{
			pOwner->InputData.THREAD_STACK.Add(FIFO[Counter]);
			Number--;
		}
		FIFO[Counter] = NULL;
	}
	memset(this,0,sizeof(*this));
	pOwner->BuildHTable();
	Number = 0;

//	PHI.reset();
}

u32	NET_Name::GetNextPacket(OneBuf	*pBuf /* == NULL mean must FLUSH !!*/, NET_IO *pForTrash)
{
	if (!Number) 
		return 0; /* Nothing to get */
	u32 OldPN;
	DWORD MutexState;
	
	OldPN = CurrentPacketNumber;
	if  (pBuf) 
	{
		MutexState = WaitForSingleObject(pForTrash->InputData.AccesMutex, INFINITE);
	}

	if ((pBuf) && (FIFO[Base] == NULL))
	{
		if (
			/* These two line decide when to say a packet is not lost */
			/* 1 -> If less than 8 packet have been received since AND */
				(LatestPacketNumber - CurrentPacketNumber < 8) &&
			/* 2 -> if We have waited less than 100 mls */
				(timeGetTime() - LatestTimeReception < 100)
			)
		{
			if (WAIT_OBJECT_0 == MutexState)
				ReleaseMutex(pForTrash->InputData.AccesMutex);
			return 0; /* Wait more... maybe the packet is not lost */
		}
	}

	while (!FIFO[Base])
	{
		Base++;
		LostPackets ++;
		if (Base >= MAXBUFFERS_PER_NAME) Base = 0;
	}
	GoodPackets ++;
	if (pBuf) memcpy(pBuf,FIFO[Base],sizeof(OneBuf));
	CurrentPacketNumber = FIFO[Base]->PacketNumber;
	Number--;
	pForTrash->InputData.THREAD_STACK.Add(FIFO[Base]); /* Give the place to */
	FIFO[Base] = NULL;
	Base++;
	CurrentPacketNumber++;
	if (Base >= MAXBUFFERS_PER_NAME) Base = 0;
	LatestTimeReception = timeGetTime();
	if (pBuf) 
		if (WAIT_OBJECT_0 == MutexState)
			ReleaseMutex(pForTrash->InputData.AccesMutex);

	if (LostPackets + GoodPackets > 100)
	{
		LostPackets >>= 1;
		GoodPackets >>= 1;
	}

	
	return 1;
};