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#pragma once
enum {
STREAM_OFFSET_MODEL = 0,
STREAM_OFFSET_TXD = STREAM_OFFSET_MODEL+MODELINFOSIZE,
NUMSTREAMINFO = STREAM_OFFSET_TXD+TXDSTORESIZE
};
enum StreamFlags
{
STREAMFLAGS_DONT_REMOVE = 0x01,
STREAMFLAGS_SCRIPTOWNED = 0x02,
STREAMFLAGS_DEPENDENCY = 0x04,
STREAMFLAGS_PRIORITY = 0x08,
STREAMFLAGS_NOFADE = 0x10,
// TODO: this isn't named well, maybe CANT_REMOVE?
STREAMFLAGS_NOT_IN_LIST = STREAMFLAGS_DONT_REMOVE|STREAMFLAGS_SCRIPTOWNED,
STREAMFLAGS_KEEP_IN_MEMORY = STREAMFLAGS_DONT_REMOVE|STREAMFLAGS_SCRIPTOWNED|STREAMFLAGS_DEPENDENCY,
};
enum StreamLoadState
{
STREAMSTATE_NOTLOADED = 0,
STREAMSTATE_LOADED = 1,
STREAMSTATE_INQUEUE = 2,
STREAMSTATE_READING = 3, // channel is reading
STREAMSTATE_STARTED = 4, // first part loaded
};
enum ChannelState
{
CHANNELSTATE_IDLE = 0,
CHANNELSTATE_READING = 1,
CHANNELSTATE_STARTED = 2,
CHANNELSTATE_ERROR = 3,
};
class CStreamingInfo
{
public:
CStreamingInfo *m_next;
CStreamingInfo *m_prev;
uint8 m_loadState;
uint8 m_flags;
int16 m_nextID;
uint32 m_position;
uint32 m_size;
bool GetCdPosnAndSize(uint32 &posn, uint32 &size);
void SetCdPosnAndSize(uint32 posn, uint32 size);
void AddToList(CStreamingInfo *link);
void RemoveFromList(void);
uint32 GetCdSize(void) { return m_size; }
bool IsPriority(void) { return !!(m_flags & STREAMFLAGS_PRIORITY); }
};
struct CStreamingChannel
{
int32 streamIds[4];
int32 offsets[4];
int32 state;
int32 field24;
int32 position;
int32 size;
int32 numTries;
int32 status; // from CdStream
};
class CDirectory;
enum eLevelName;
class CPtrList;
class CStreaming
{
public:
static bool &ms_disableStreaming;
static bool &ms_bLoadingBigModel;
static int32 &ms_numModelsRequested;
static CStreamingInfo *ms_aInfoForModel; //[NUMSTREAMINFO]
static CStreamingInfo &ms_startLoadedList;
static CStreamingInfo &ms_endLoadedList;
static CStreamingInfo &ms_startRequestedList;
static CStreamingInfo &ms_endRequestedList;
static int32 &ms_oldSectorX;
static int32 &ms_oldSectorY;
static int32 &ms_streamingBufferSize;
static int8 **ms_pStreamingBuffer; //[2]
static int32 &ms_memoryUsed;
static CStreamingChannel *ms_channel; //[2]
static int32 &ms_channelError;
static int32 &ms_numVehiclesLoaded;
static int32 *ms_vehiclesLoaded; //[MAXVEHICLESLOADED]
static int32 &ms_lastVehicleDeleted;
static CDirectory *&ms_pExtraObjectsDir;
static int32 &ms_numPriorityRequests;
static bool &ms_hasLoadedLODs;
static int32 &ms_currentPedGrp;
static int32 ms_lastCullZone;
static uint16 &ms_loadedGangs;
static int32 ms_currentPedLoading;
static int32 *ms_imageOffsets; //[NUMCDIMAGES]
static int32 &ms_lastImageRead;
static int32 &ms_imageSize;
static uint32 &ms_memoryAvailable;
static void Init(void);
static void Shutdown(void);
static void LoadCdDirectory(void);
static void LoadCdDirectory(const char *dirname, int32 n);
static bool ConvertBufferToObject(int8 *buf, int32 streamId);
static bool FinishLoadingLargeFile(int8 *buf, int32 streamId);
static void RequestModel(int32 model, int32 flags);
static void ReRequestModel(int32 model) { RequestModel(model, ms_aInfoForModel[model].m_flags); }
static void RequestTxd(int32 txd, int32 flags) { RequestModel(txd + STREAM_OFFSET_TXD, flags); }
static void ReRequestTxd(int32 txd) { ReRequestModel(txd + STREAM_OFFSET_TXD); }
static void RequestSubway(void);
static void RequestBigBuildings(eLevelName level);
static void RequestIslands(eLevelName level);
static void RequestSpecialModel(int32 modelId, const char *modelName, int32 flags);
static void RequestSpecialChar(int32 charId, const char *modelName, int32 flags);
static void DecrementRef(int32 id);
static void RemoveModel(int32 id);
static void RemoveTxd(int32 id) { RemoveModel(id + STREAM_OFFSET_TXD); }
static void RemoveUnusedBuildings(eLevelName level);
static void RemoveBuildings(eLevelName level);
static void RemoveUnusedBigBuildings(eLevelName level);
static void RemoveIslandsNotUsed(eLevelName level);
static void RemoveBigBuildings(eLevelName level);
static bool RemoveLoadedVehicle(void);
static bool RemoveLeastUsedModel(void);
static void RemoveAllUnusedModels(void);
static void RemoveUnusedModelsInLoadedList(void);
static bool RemoveReferencedTxds(int32 mem);
static int32 GetAvailableVehicleSlot(void);
static bool IsTxdUsedByRequestedModels(int32 txdId);
static bool AddToLoadedVehiclesList(int32 modelId);
static bool IsObjectInCdImage(int32 id);
static void HaveAllBigBuildingsLoaded(eLevelName level);
static void SetModelIsDeletable(int32 id);
static void SetModelTxdIsDeletable(int32 id);
static void SetMissionDoesntRequireModel(int32 id);
static int32 GetCdImageOffset(int32 lastPosn);
static int32 GetNextFileOnCd(int32 position, bool priority);
static void RequestModelStream(int32 ch);
static bool ProcessLoadingChannel(int32 ch);
static void RetryLoadFile(int32 ch);
static void LoadRequestedModels(void);
static void LoadAllRequestedModels(bool priority);
static void FlushChannels(void);
static void FlushRequestList(void);
static void MakeSpaceFor(int32 size);
static void ImGonnaUseStreamingMemory(void);
static void IHaveUsedStreamingMemory(void);
static void UpdateMemoryUsed(void);
static void AddModelsToRequestList(const CVector &pos);
static void ProcessEntitiesInSectorList(CPtrList &list, float x, float y, float xmin, float ymin, float xmax, float ymax);
static void ProcessEntitiesInSectorList(CPtrList &list);
static void DeleteFarAwayRwObjects(const CVector &pos);
static void DeleteAllRwObjects(void);
static void DeleteRwObjectsAfterDeath(const CVector &pos);
static void DeleteRwObjectsBehindCamera(int32 mem);
static void DeleteRwObjectsInSectorList(CPtrList &list);
static void DeleteRwObjectsInOverlapSectorList(CPtrList &list, int32 x, int32 y);
static bool DeleteRwObjectsBehindCameraInSectorList(CPtrList &list, int32 mem);
static bool DeleteRwObjectsNotInFrustumInSectorList(CPtrList &list, int32 mem);
static void LoadInitialPeds(void);
static void LoadInitialVehicles(void);
static void LoadScene(const CVector &pos);
static bool IsModelLoaded(int32 id) { return ms_aInfoForModel[id].m_loadState == STREAMSTATE_LOADED; }
};
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