void Projectile::Update(float elapsedTime)
{
// Test si les conditions de fin du projectile sont vraies
if (m_timeToLive <= 0 || !m_shot || elapsedTime == 0)
return;
// Test si atteint la cible
if( abs(m_destination.x - m_pos.x) < m_collisionRadius.x
&& abs(m_destination.y - m_pos.y) < m_collisionRadius.y
&& abs(m_destination.z - m_pos.z) < m_collisionRadius.z) {
Hit();
return;
}
Vector3f speed = m_rot * m_speed;
speed = speed * m_speed.Lenght();
// Met a jour la valeur de la vitesse en
// fonction de l'acceleration et du temps
m_speed += m_acceleration * elapsedTime;
m_timeToLive -= elapsedTime;
// distance entre le projectile et sa destination
// chemin le plus court
Vector3f distance;
distance.x = m_pos.x - m_destination.x;
distance.y = m_pos.y - m_destination.y;
distance.z = m_pos.z - m_destination.z;
// calculer l'angle entre les 2 vecteurs
// fix imprecision float
float n = distance.Dot(speed) / (distance.Lenght() * speed.Lenght());
if (n > 1)
n = 1;
else if (n < -1)
n = -1;
float angleA = acos(n);
std::cout << angleA << std::endl;
Vector3f axis = distance.Cross(speed);
axis.Normalize();
// rotation autour de laxe
float rotation;
if (abs(angleA) >= m_maxRot && abs(angleA) < PII - m_maxRot) {
rotation = (angleA > 0) ? -m_maxRot : m_maxRot;
rotation *= elapsedTime;
}
else
rotation = angleA - PII;
Quaternion q;
q.FromAxis(rotation, axis);
q.Normalise();
m_rot = q * m_rot;
m_rot.Normalise();
// calcul la nouvelle position
m_pos += speed * elapsedTime;
}
void Npc::Move(const Vector3f& destination, float elapsedTime)
{
if (elapsedTime == 0)
return;
// Gravité
float distanceY = (m_speedGravity * elapsedTime) + (GRAVITY * elapsedTime * elapsedTime / 2.0f);
if (!CheckCollision(Vector3f(m_pos.x, m_pos.y - distanceY, m_pos.z)))
{
m_speedGravity -= GRAVITY * elapsedTime;
}
else
{
m_speedGravity = 0;
distanceY = 0;
}
// Test si atteint la destination
if( abs(destination.x - m_pos.x) < 1
&& abs(destination.y - m_pos.y) < 1
&& abs(destination.z - m_pos.z) < 1) {
}
else {
Vector3f deplacement;
deplacement = m_rot * m_speed * elapsedTime;
// chemin le plus court
Vector3f distance;
distance.x = m_pos.x - destination.x;
distance.y = m_pos.y - destination.y;
distance.z = m_pos.z - destination.z;
// calculer l'angle entre les 2 vecteurs
// fix imprecision float
float n = distance.Dot(deplacement) / (distance.Lenght() * deplacement.Lenght());
if (n > 1)
n = 1;
else if (n < -1)
n = -1;
float angleA = acos(n);
Vector3f axis = distance.Cross(deplacement);
axis.Normalize();
// rotation autour de laxe
float rotation;
if (abs(angleA) >= m_maxRot && abs(angleA) < PII - m_maxRot)
rotation = (angleA > 0) ? -m_maxRot : m_maxRot;
else
rotation = angleA - PII;
Quaternion q;
q.FromAxis(rotation, axis);
q.Normalise();
m_rot = q * m_rot;
m_rot.Normalise();
// Check collisions
Vector3f curPos = m_pos;
Vector3f newPos;
newPos.x = curPos.x + deplacement.x;
newPos.y = curPos.y;
newPos.z = curPos.z;
if(!CheckCollision(newPos + Vector3f(0,1,0)))
m_pos.x += deplacement.x;
newPos.x = curPos.x;
newPos.y = curPos.y + deplacement.y;
newPos.z = curPos.z;
if(!CheckCollision(newPos + Vector3f(0,1,0)))
m_pos.y += deplacement.y;
newPos.x = curPos.x;
newPos.y = curPos.y;
newPos.z = curPos.z + deplacement.z;
if(!CheckCollision(newPos + Vector3f(0,1,0)))
m_pos.z += deplacement.z;
}
if (!m_flying)
m_pos.y += distanceY;
}
