void GameProjectile::update( float dt )
{
GameObject::update( dt );
if ( !m_hasHit )
{
Vector3 vel = velocity();
vel += Vector3( 0, -9.81f, 0 ) * dt * m_gravity;
setVelocity( vel );
m_movedDistance += velocity().length() * dt;
CollisionInfo cinfo;
move( velocity() * dt, &cinfo );
if ( cinfo.isCollision(CollisionInfo::COLLIDE_ALL) )
hit( &cinfo );
if ( m_spinSpeed > 0.f )
setRotation( rotation() * Matrix3x3( m_spinAxis, m_spinSpeed * dt) );
}
m_age += dt;
if ( m_age > m_ageLimit )
m_removable = true;
if ( m_movedDistance > m_maxRange )
m_removable = true;
}
void GameWeapon::fire( GameCharacter* character, const Vector3& direction, bool applyRecoilError )
{
assert( m_mesh );
if ( m_shells > 0 )
{
// find bullet launch position
Vector3 launchPos = launchPosition();
// check that we are not too close any obstacle
GamePointObject* pointCollisionChecker = character->visibilityCollisionChecker();
pointCollisionChecker->setPosition( character->cell(), character->position() );
Vector3 startpoint = character->headWorldPosition();
pointCollisionChecker->moveWithoutColliding( startpoint - pointCollisionChecker->position() );
CollisionInfo cinfo;
pointCollisionChecker->move( launchPos - pointCollisionChecker->position(), &cinfo );
bool removeInFirstUpdate = cinfo.isCollision(CollisionInfo::COLLIDE_ALL);
fireVisuals( character );
// Apply recoil error
Vector3 launchVector = direction;
if ( applyRecoilError )
launchVector = Vector3( perturbVector( direction, m_accumulatedRecoilError, character->up(), character->right() ) );
// Create projectile(s)
float limitangle = m_spreadConeLimitAngle;
for ( int i = 0; i < m_shotsPerLaunch; ++i )
{
GameProjectile* projectile = m_projectileMgr->createProjectile( m_bullet, cell(), this, launchPos, perturbVector( launchVector, limitangle, character->up(), character->right() ) );
if ( removeInFirstUpdate )
projectile->removeInNextUpdate();
}
// Accumulate recoil error
m_accumulatedRecoilError += m_recoilErrorPerShot;
if ( m_accumulatedRecoilError > m_maxRecoilError )
m_accumulatedRecoilError = m_maxRecoilError;
// Decrease shells
m_shells--;
}
else
{
// Call script function for empty clip
pushMethod( "signalEmpty" );
vm()->pushTable( character );
call(1, 0);
m_clipEmpty = true;
}
// reset timer for weapon becoming ready for next shot
m_fireDeltaTime = 0.f;
}
bool GameDynamicObject::isVisiblePoint( const Vector3& worldPos, const Vector3& point ) const
{
// check if character is occluded by level geometry
m_visibilityChecker->setPosition( cell(), position() );
m_visibilityChecker->moveWithoutColliding( point-m_visibilityChecker->position() );
CollisionInfo cinfo;
m_visibilityChecker->move( worldPos-m_visibilityChecker->position(), &cinfo );
return !cinfo.isCollision( CollisionInfo::COLLIDE_ALL );
}