C++ CBaseCombatWeapon::AllowsAutoSwitchTo方法代码示例

	//-----------------------------------------------------------------------------
	// Purpose: Find the next best weapon to use and return it.
	//-----------------------------------------------------------------------------
	CBaseCombatWeapon *CSingleplayRules::GetNextBestWeapon( CBaseCombatCharacter *pPlayer, CBaseCombatWeapon *pCurrentWeapon )
	{
		if ( pCurrentWeapon && !pCurrentWeapon->AllowsAutoSwitchFrom() )
			return NULL;

		CBaseCombatWeapon	*pBestWeapon = NULL;
		CBaseCombatWeapon	*pWeapon;
		
		int	nBestWeight	= -1;

		//Search for the best weapon to use next based on its weight
		for ( int i = 0; i < pPlayer->WeaponCount(); i++ )
		{
			pWeapon = pPlayer->GetWeapon(i);

			if ( pWeapon == NULL )
				continue;



			// If we have an active weapon and this weapon doesn't allow autoswitching away
			// from another weapon, skip it.
			if ( pCurrentWeapon && !pWeapon->AllowsAutoSwitchTo() )
				continue;

			// Must be eligible for switching to.
			if (!pPlayer->Weapon_CanSwitchTo(pWeapon))
				continue;
			
			// Must be of higher quality.
			if ( pWeapon->GetWeight() <= nBestWeight )
				continue;

			// We must have primary ammo
			if ( pWeapon->UsesClipsForAmmo1() && pWeapon->Clip1() <= 0 && !pPlayer->GetAmmoCount( pWeapon->GetPrimaryAmmoType() ) )
				continue;

			// This is a better candidate than what we had.
			nBestWeight = pWeapon->GetWeight();
			pBestWeapon = pWeapon;
		}

		return pBestWeapon;
	}

	//-----------------------------------------------------------------------------
	// Purpose: Returns the weapon in the player's inventory that would be better than
	//			the given weapon.
	//-----------------------------------------------------------------------------
	CBaseCombatWeapon *CMultiplayRules::GetNextBestWeapon( CBaseCombatCharacter *pPlayer, CBaseCombatWeapon *pCurrentWeapon )
	{
		CBaseCombatWeapon *pCheck;
		CBaseCombatWeapon *pBest;// this will be used in the event that we don't find a weapon in the same category.

		int iCurrentWeight = -1;
		int iBestWeight = -1;// no weapon lower than -1 can be autoswitched to
		pBest = NULL;

		// If I have a weapon, make sure I'm allowed to holster it
		if ( pCurrentWeapon )
		{
			if ( !pCurrentWeapon->AllowsAutoSwitchFrom() || !pCurrentWeapon->CanHolster() )
			{
				// Either this weapon doesn't allow autoswitching away from it or I
				// can't put this weapon away right now, so I can't switch.
				return NULL;
			}

			iCurrentWeight = pCurrentWeapon->GetWeight();
		}

		for ( int i = 0 ; i < pPlayer->WeaponCount(); ++i )
		{
			pCheck = pPlayer->GetWeapon( i );
			if ( !pCheck )
				continue;

			// If we have an active weapon and this weapon doesn't allow autoswitching away
			// from another weapon, skip it.
			if ( pCurrentWeapon && !pCheck->AllowsAutoSwitchTo() )
				continue;

			if ( pCheck->GetWeight() > -1 && pCheck->GetWeight() == iCurrentWeight && pCheck != pCurrentWeapon )
			{
				// this weapon is from the same category. 
				if ( pCheck->HasAnyAmmo() )
				{
					if ( pPlayer->Weapon_CanSwitchTo( pCheck ) )
					{
						return pCheck;
					}
				}
			}
			else if ( pCheck->GetWeight() > iBestWeight && pCheck != pCurrentWeapon )// don't reselect the weapon we're trying to get rid of
			{
				//Msg( "Considering %s\n", STRING( pCheck->GetClassname() );
				// we keep updating the 'best' weapon just in case we can't find a weapon of the same weight
				// that the player was using. This will end up leaving the player with his heaviest-weighted 
				// weapon. 
				if ( pCheck->HasAnyAmmo() )
				{
					// if this weapon is useable, flag it as the best
					iBestWeight = pCheck->GetWeight();
					pBest = pCheck;
				}
			}
		}

		// if we make it here, we've checked all the weapons and found no useable 
		// weapon in the same catagory as the current weapon. 
		
		// if pBest is null, we didn't find ANYTHING. Shouldn't be possible- should always 
		// at least get the crowbar, but ya never know.
		return pBest;
	}