C++ vector_vs::size方法代码示例

	////////////////////////////////////////////////////////////////////////////////////
	// Initialize
	//
	// This function scans through the list of tracks and hooks itself up with the
	// track (and possibly lane)
	////////////////////////////////////////////////////////////////////////////////////
	void		Initialize()
	{
		mTrack	= 0;
		mLane	= 0;
		mCols	= 0;
		mRows	= 0;

		hstring	target = mEnt->target;
		for (int track=0; track<mRailTracks.size(); track++)
		{
			if (mRailTracks[track].mName==target)
			{
				mTrack = &(mRailTracks[track]);
				break;
			}
		}
		if (mTrack==0)
		{
			for (int lane=0; lane<mRailLanes.size(); lane++)
			{
				if (mRailLanes[lane].mName==target)
				{
					mLane	= &(mRailLanes[lane]);
					mTrack	= mLane->mTrack;
					break;
				}
			}
		}
		assert(mTrack!=0);
		if (mTrack)
		{
			mTrack->mMovers.push_back(this);
			mCols	= (int)((mEnt->maxs[mTrack->mWAxis] - mEnt->mins[mTrack->mWAxis]) / mTrack->mGridCellSize) + 1;
			mRows	= (int)((mEnt->maxs[mTrack->mHAxis] - mEnt->mins[mTrack->mHAxis]) / mTrack->mGridCellSize) + 1;

			// Make Sure The Mover Fits In The Track And Lane
			//------------------------------------------------
			if (mRows>mTrack->mRows)
			{
//				assert(0);
				mRows = mTrack->mRows;
			}
			if (mCols>mTrack->mCols)
			{
//				assert(0);
				mCols = mTrack->mCols;
			}
			if (mLane && mCols>(mLane->mMaxCol - mLane->mMinCol + 1))
			{
//				assert(0);
				mCols = (mLane->mMaxCol - mLane->mMinCol + 1);
			}
		}
	}

////////////////////////////////////////////////////////////////////////////////////////
// Vehicle_Find
//
// Will look through all registered vehicles and choose the closest one that the given
// entity can get to.
//
////////////////////////////////////////////////////////////////////////////////////////
gentity_t*	Vehicle_Find(gentity_t *ent)
{
	gentity_t*		closest = 0;
	float			closestDist = 0;
	float			curDist = 0;


	for (int i=0; i<mRegistered.size(); i++)
	{
		if (!mRegistered[i]->owner)
		{
			curDist = Distance(mRegistered[i]->currentOrigin, ent->currentOrigin);
			if (curDist<1000 && (!closest || curDist<closestDist))
			{
				if (NAV::InSameRegion(ent, mRegistered[i]))
				{
					closest = mRegistered[i];
					closestDist = curDist;
				}
			}
		}
	}

	return closest;
}

void	Rail_Update()
{
	if (mRailSystemActive)// && false)
	{
		for (int track=0; track<mRailTracks.size(); track++)
		{
			if (level.time>mRailTracks[track].mNextUpdateTime && !mRailTracks[track].mMovers.empty())
			{
				mRailTracks[track].Update();
			}
		}

		// Is The Player Outside?
		//------------------------
 		if (player && gi.WE_IsOutside(player->currentOrigin))
		{
			int		wooshSound;
			vec3_t	wooshSoundPos;
			vec3_t	moverOrigin;
			vec3_t	playerToMover;
			float	playerToMoverDistance;
			float	playerToMoverDistanceFraction;

			// Iterate Over All The Movers
			//-----------------------------
 			for (int moverIndex=0; moverIndex<mRailMovers.size(); moverIndex++)
			{
 				CRailMover&	mover = mRailMovers[moverIndex];

				// Is It Active, And Has The Sound Already Played On It?
				//--------------------------------------------------------
   			 	if (mover.Active() && !mover.mSoundPlayed)
				{ 
 					VectorAdd(mover.mEnt->currentOrigin, mover.mOriginOffset.v, moverOrigin);
 					VectorSubtract(moverOrigin, player->currentOrigin, playerToMover);
					playerToMover[2]		= 0.0f;
 					playerToMoverDistance	= VectorNormalize(playerToMover);


					// Is It Close Enough?
					//---------------------
					if ((( mover.mLane || !mover.mCenter) &&								// Not Center Track
						 (playerToMoverDistance<WOOSH_ALL_RANGE) && 						//  And Close Enough
						 (DotProduct(playerToMover, mover.mTrack->mDirection.v)>-0.45f))	//  And On The Side
						||																	//OR
						((!mover.mLane &&  mover.mCenter) &&								// Is Center Track
						  (playerToMoverDistance<WOOSH_SUPPORT_RANGE ||						//  And Close Enough for Support
						  (playerToMoverDistance<WOOSH_TUNNEL_RANGE && mover.mRows>10))		//   Or Close Enough For Tunnel
						 ))
					{
						mover.mSoundPlayed = true;
						wooshSound = 0;

						// The Centered Entities Play Right On The Player's Head For Full Volume
						//-----------------------------------------------------------------------
						if (mover.mCenter && !mover.mLane)
						{
 							VectorCopy(player->currentOrigin, wooshSoundPos);
 							wooshSoundPos[2] += 50;

							// If It Is Very Long, Play The Tunnel Sound
							//-------------------------------------------
							if (mover.mRows>10)
							{
								wooshSound = mWooshTun[Q_irand(0, mWooshTun.size()-1)];
							}

							// Otherwise It Is A Support
							//---------------------------
							else 
							{ 
								wooshSound = mWooshSup[Q_irand(0, mWooshSup.size()-1)];
							}
						}

						// All Other Entities Play At A Fraction Of Their Normal Range
						//-------------------------------------------------------------
 						else 
						{
							// Scale The Play Pos By The Square Of The Distance
							//--------------------------------------------------
							playerToMoverDistanceFraction = playerToMoverDistance/WOOSH_ALL_RANGE;
 							playerToMoverDistanceFraction *= playerToMoverDistanceFraction;
							playerToMoverDistanceFraction *= 0.6f;
							playerToMoverDistance *= playerToMoverDistanceFraction;
 							VectorMA(player->currentOrigin, playerToMoverDistance, playerToMover, wooshSoundPos);

							// Large Building
							//----------------
							if (mover.mRows>4)
							{
								wooshSound = mWooshLar[Q_irand(0, mWooshLar.size()-1)];
							}

							// Medium Building
							//-----------------
							else if (mover.mRows>2)
							{
								wooshSound = mWooshMed[Q_irand(0, mWooshMed.size()-1)];
							}
//.........这里部分代码省略.........

////////////////////////////////////////////////////////////////////////////////////////
// Update The Packs, Delete Dead Leaders, Join / Split Packs, Find MY Leader
////////////////////////////////////////////////////////////////////////////////////////
gentity_t* NPC_AnimalUpdateLeader(void)
{
	// Find The Closest Pack Leader, Not Counting Myself
	//---------------------------------------------------
	gentity_t*	closestLeader = 0;
	float		closestDist = 0;
	int			myLeaderNum = 0;
	
	for (int i=0; i<mPacks.size(); i++)
	{
		// Dump Dead Leaders
		//-------------------
		if (mPacks[i]==0 || mPacks[i]->health<=0)
		{
			if (mPacks[i]==NPC->client->leader)
			{
				NPC->client->leader = 0;
			}

			mPacks.erase_swap(i);

			if (i>=mPacks.size())
			{
				closestLeader = 0;
				break;
			}
		}

		// Don't Count Self
		//------------------
		if (mPacks[i]==NPC)
		{
			myLeaderNum = i;
			continue;
		}

		float	Dist = Distance(mPacks[i]->currentOrigin, NPC->currentOrigin);
		if (!closestLeader || Dist<closestDist)
		{
			closestDist = Dist;
			closestLeader = mPacks[i];
		}
	}

	// In Joining Distance?
	//----------------------
	if (closestLeader && closestDist<JOIN_PACK_DISTANCE)
	{
		// Am I Already A Leader?
		//------------------------
		if (NPC->client->leader==NPC)
		{
			mPacks.erase_swap(myLeaderNum);		// Erase Myself From The Leader List
		}

		// Join The Pack!
		//----------------
		NPC->client->leader = closestLeader;
	}


	// Do I Have A Leader?
	//---------------------
	if (NPC->client->leader)
	{
		// AM I A Leader?
		//----------------
		if (NPC->client->leader!=NPC)
		{
			// If Our Leader Is Dead, Clear Him Out

			if ( NPC->client->leader->health<=0 || NPC->client->leader->inuse == 0)
			{
				NPC->client->leader = 0;
			}
			
			// If My Leader Isn't His Own Leader, Then, Use His Leader
			//---------------------------------------------------------
			else if (NPC->client->leader->client->leader!=NPC->client->leader)
			{
				// Eh.  Can this get more confusing?
				NPC->client->leader = NPC->client->leader->client->leader;
			}

			// If Our Leader Is Too Far Away, Clear Him Out
			//------------------------------------------------------
			else if ( Distance(NPC->client->leader->currentOrigin, NPC->currentOrigin)>LEAVE_PACK_DISTANCE)
			{
				NPC->client->leader = 0;
			}
		}

	}

	// If We Couldn't Find A Leader, Then Become One
	//-----------------------------------------------
	else if (!mPacks.full())
//.........这里部分代码省略.........