C++ Fire函数代码示例

//-----------------------------------------------------------------------------
// Make sure our target is still valid, and if so, fire at it
//-----------------------------------------------------------------------------
void CObjectSentrygun::Attack()
{
	StudioFrameAdvance( );

	if ( !FindTarget() )
	{
		m_iState.Set( SENTRY_STATE_SEARCHING );
		m_hEnemy = NULL;
		return;
	}

	// Track enemy
	Vector vecMid = EyePosition();
	Vector vecMidEnemy = m_hEnemy->WorldSpaceCenter();
	Vector vecDirToEnemy = vecMidEnemy - vecMid;

	QAngle angToTarget;
	VectorAngles( vecDirToEnemy, angToTarget );

	angToTarget.y = UTIL_AngleMod( angToTarget.y );
	if (angToTarget.x < -180)
		angToTarget.x += 360;
	if (angToTarget.x > 180)
		angToTarget.x -= 360;

	// now all numbers should be in [1...360]
	// pin to turret limitations to [-50...50]
	if (angToTarget.x > 50)
		angToTarget.x = 50;
	else if (angToTarget.x < -50)
		angToTarget.x = -50;
	m_vecGoalAngles.y = angToTarget.y;
	m_vecGoalAngles.x = angToTarget.x;

	MoveTurret();

	// Fire on the target if it's within 10 units of being aimed right at it
	if ( m_flNextAttack <= gpGlobals->curtime && (m_vecGoalAngles - m_vecCurAngles).Length() <= 10 )
	{
		Fire();

		if ( m_iUpgradeLevel == 1 )
		{
			// Level 1 sentries fire slower
			m_flNextAttack = gpGlobals->curtime + 0.2;
		}
		else
		{
			m_flNextAttack = gpGlobals->curtime + 0.1;
		}
	}
	else
	{
		// SetSentryAnim( TFTURRET_ANIM_SPIN );
	}
}

void CBaseMelee::SecondaryAttack( void )
{
	Fire();

#ifndef CLIENT_DLL
	MESSAGE_BEGIN( MSG_ONE, gmsgHintbox, NULL, m_pPlayer->pev );
        WRITE_SHORT(HINTBOX_MELEE2);
    MESSAGE_END();
#endif
}

//-----------------------------------------------------------------------------
// Purpose: 
//-----------------------------------------------------------------------------
void CFuncTankMortar::ShootGun( void )
{
	Vector forward;
	AngleVectors( GetLocalAngles(), &forward );
	UpdateMatrix();
	forward = m_parentMatrix.ApplyRotation( forward );

	// use cached firing state
	Fire( 1, WorldBarrelPosition(), forward, m_pAttacker ); 
}

//=========================================================
// StartFire- since all of this code has to run and then 
// call Fire(), it was easier at this point to rip it out 
// of weaponidle() and make its own function then to try to
// merge this into Fire(), which has some identical variable names 
//=========================================================
void CGauss::StartFire( void )
{
	float flDamage;
	
	UTIL_MakeVectors( m_pPlayer->pev->v_angle + m_pPlayer->pev->punchangle );
	Vector vecAiming = gpGlobals->v_forward;
	Vector vecSrc = m_pPlayer->GetGunPosition( ); // + gpGlobals->v_up * -8 + gpGlobals->v_right * 8;
	
	if ( gpGlobals->time - m_pPlayer->m_flStartCharge > GetFullChargeTime() )
	{
		flDamage = 200;
	}
	else
	{
		flDamage = 200 * (( gpGlobals->time - m_pPlayer->m_flStartCharge) / GetFullChargeTime() );
	}

	if ( m_fPrimaryFire )
	{
		// fixed damage on primary attack
#ifdef CLIENT_DLL
		flDamage = 20;
#else 
		flDamage = gSkillData.plrDmgGauss;
#endif
	}

	if (m_fInAttack != 3)
	{
		//ALERT ( at_console, "Time:%f Damage:%f\n", gpGlobals->time - m_pPlayer->m_flStartCharge, flDamage );

#ifndef CLIENT_DLL
		float flZVel = m_pPlayer->pev->velocity.z;

		if ( !m_fPrimaryFire )
		{
			m_pPlayer->pev->velocity = m_pPlayer->pev->velocity - gpGlobals->v_forward * flDamage * 5;
		}

		if ( !g_pGameRules->IsMultiplayer() )

		{
			// in deathmatch, gauss can pop you up into the air. Not in single play.
			m_pPlayer->pev->velocity.z = flZVel;
		}
#endif
		// player "shoot" animation
		m_pPlayer->SetAnimation( PLAYER_ATTACK1 );
	}

	// time until aftershock 'static discharge' sound
	m_pPlayer->m_flPlayAftershock = gpGlobals->time + UTIL_SharedRandomFloat( m_pPlayer->random_seed, 0.3, 0.8 );

	Fire( vecSrc, vecAiming, flDamage );
}

// Pre Fire
void AWeapon::PreFire()
{
	// BP Pre Fire
	BP_PreFire();

	if (!ThePlayer)return;
	
	// If player stopped shooting stop event
	if (!bShooting )
	{
		ThePlayer->GetWorldTimerManager().ClearTimer(PreFireTimeHandle);
		return;
	}

	// Currently Equiping this weapon, delay a bit
	if (ThePlayer->IsAnimState(EAnimState::Equip))
	{
		// try after a small delay
		FTimerHandle MyHandle;
		ThePlayer->GetWorldTimerManager().SetTimer(MyHandle, this, &AWeapon::PreFire, 0.2, false);
		return;
	}

	// Wrong Weapon or Player Anim State
	if (!CanShoot())return;

	// Ammo Check
	if (!MainFire.CanFire())
	{
		//  BP No Ammo
		BP_NoAmmo();

		// if have ammo, start reloading
		if (CanReload())ReloadWeaponStart();
		return;
	}


	// The real fire event
	Fire();

	// Use Ammo
	if (bUseAmmo)UseMainFireAmmo();


	// Set Player Anim State
	ThePlayer->ServerSetAnimID(EAnimState::Fire);

	// Decrease move speed when shooting
	ThePlayer->ResetMoveSpeed();

	///	Stop Fire Anim
	FTimerHandle MyHandle;
	ThePlayer->GetWorldTimerManager().SetTimer(MyHandle, this, &AWeapon::StopFireAnim, 0.1, false);
}

void SlimeKingMiddle::MoodAttack(float dt)
{
	if (timer == kTimerUp)
	{
		timer = AttackTime();
		Animate("Stay", myEnum::kAction::kActionAttack);
		// fire a ball
		auto sp = this->getPosition();
		sp.y -= this->getContentSize().height;
		auto dp1 = Vec2(sp.x - CCRANDOM_MINUS1_1(), sp.y - 1);
		auto dp2 = Vec2(sp.x - CCRANDOM_MINUS1_1(), sp.y - 1);

		Fire(layer, sp, dp1);
		Fire(layer, sp, dp2);
	}
	else if (timer <= 0.0f)
	{
		ChooseMood();
	}
}

void cBoss::SpecificLogic(const cMap &map) {
    if (--fireTime <= 0) {
        SetNewFireTime();
        Fire();
    }
    if (--directionTime <= 0) {
        SetNewDirectionTime();
        SetNewDirection();
    }
    Move(map, direction, sceneX, sceneY);
}

void SpreadWeapon::Update(Vector2D location,Vector2D target)
{
	if(firing)
	{
		if(shotTimer.get_ticks() >= fireRate)
		{								
			Fire(location, target);
			shotTimer.start();
		}
	}
}

void cgAircraftWeapon::Update( float fDeltaTime )
{
	if (!m_pkConfig)
		return ;

	m_fCD += fDeltaTime;
	if (m_fCD >= m_pkConfig->fFireCD)
	{
		m_fCD -= m_pkConfig->fFireCD;
		Fire();
	}
}

void clSpaceShip::Update( float dt )
{
	iActor::Update( dt );

//	printf("vv = %f\n", g_ScreenJoystick->GetAxisValue(0));

	if ( g_Game->IsKeyPressed( SDLK_LEFT ) )
	{
		m_Angle += dt;
	}

	if ( g_Game->IsKeyPressed( SDLK_RIGHT ) )
	{
		m_Angle -= dt;
	}

	bool Accel = g_Game->IsKeyPressed( SDLK_UP );
	bool Decel = g_Game->IsKeyPressed( SDLK_DOWN );
	m_Accel = vec3( 0.0f );

	if ( Accel )
	{
		m_Accel = GetDirection();
	}

	if ( Decel )
	{
		m_Accel += -GetDirection();
	}

	if ( g_Game->IsKeyPressed( SDLK_SPACE ) )
	{
		Fire();
	}

	m_Pos = g_Game->ClampToLevel( m_Pos );
	m_Vel *= 0.99f;
	const float MaxVel = 1.1f;

	if ( m_Vel.Length() > MaxVel ) { m_Vel = ( m_Vel / m_Vel.Length() ) * MaxVel; }

	m_FireTime -= dt;

	if ( m_FireTime < 0 ) { m_FireTime = 0.0f; }

	mat4 ScaleFix = mat4::GetScaleMatrix( vec3( 0.1f ) );
	mat4 RotFix = mat4::GetRotateMatrixAxis( 90.0f * Math::DTOR, vec3( 0, 0, 1 ) );

	mat4 Pos = mat4::GetTranslateMatrix( m_Pos );
	mat4 Rot = mat4::GetRotateMatrixAxis( m_Angle, vec3( 0, 0, 1 ) );

	if ( m_Node ) { m_Node->SetLocalTransform( ScaleFix * RotFix * Rot * Pos ); }
}

			void Execute()
			{
				auto projectile = mWeapon->GetProjectile()->Clone();
				projectile->SetPosition(mPosition);
				projectile->SetVelocity(sf::Vector2f(projectile->GetSpeed(), 0.0f));
				projectile->SetRotation(0.0f);
				projectile->SetZOrder(50);
				projectile->SetCurrentAimpoint(mCurrAim);
				projectile->SetFinalAimpoint(mFinalAim);
				projectile->Fire();
				mDrawNode->Add(projectile);
			}

//----------------------------------------------------------------------------
//              
//	ROUTINE:	CAIHumanStrategyShootStream::UpdateAiming()
//              
//	PURPOSE:	
//              
//----------------------------------------------------------------------------
/*virtual*/ void CAIHumanStrategyShootStream::UpdateAiming(HOBJECT hTarget)
{
	if ( m_flStreamTime < g_pLTServer->GetTime() )
	{
		// Don't calculate new stream time until finished firing animation.
		if( !GetAnimationContext()->IsLocked() )
		{
			CalculateStreamTime();
		}

		Aim();
	}
	else
	{
		// We're done waiting, fire if we're at a reasonable angle

		if ( m_bIgnoreFOV )
		{
			Fire();
		}
		else
		{
			LTVector vTargetPos;
			g_pLTServer->GetObjectPos(hTarget, &vTargetPos);

			LTVector vDir = vTargetPos - GetAI()->GetPosition();
			vDir.y = 0.0f;
			vDir.Normalize();

			if ( vDir.Dot(GetAI()->GetTorsoForward()) < 0.70f )
			{
				Aim();
			}
			else
			{
				Fire();
			}
		}
	}
}

void CASW_Sentry_Top::CheckFiring()
{
	if ( gpGlobals->curtime > m_fNextFireTime && HasAmmo() && ( m_bHasHysteresis || m_hEnemy.Get() ) )
	{
		float flDist = fabs(m_fGoalYaw - m_fCurrentYaw);
		flDist = fsel( flDist - 180, 360 - flDist, flDist );

		if ( (flDist < ASW_SENTRY_FIRE_ANGLE_THRESHOLD) || ( m_bHasHysteresis && !m_hEnemy ) )
		{
			Fire();
		}	
	}
}

void RPG_Projectile::Fire(hkvVec3 position, VisBaseEntity_cl* target, bool trackTarget, float speed)
{
  if(trackTarget)
  {
    m_targetToTrack = target;
  }

  hkvVec3 directionToTarget = target->GetPosition() - GetPosition();
  if(directionToTarget.normalizeIfNotZero() == HKV_SUCCESS)
  {
    Fire(position, directionToTarget, speed);
  }
}

void ODeferrer :: timerEvent (QTimerEvent *pQTimerEvent )
{

  killTimer(timerid);
  
  if ( parent() ) 
    setParent(NULL);
    
  Fire();
  delete this;


}