void PhysicsComponent::VUpdate(int deltaMs)
{
// get the transform component
shared_ptr<TransformComponent> pTransformComponent = MakeStrongPtr(m_pOwner->GetComponent<TransformComponent>(TransformComponent::g_Name));
if (!pTransformComponent)
{
GCC_ERROR("No transform component!");
return;
}
// get the direction the object is facing
Mat4x4 transform = pTransformComponent->GetTransform();
if (m_acceleration != 0)
{
// calculate the acceleration this frame
float accelerationToApplyThisFrame = m_acceleration / 1000.f * (float)deltaMs;
// Get the current velocity vector and convert to a scalar. The velocity vector is a combination of
// the direction this actor is going in and the speed of the actor. The scalar is just the speed
// component.
Vec3 velocity(m_pGamePhysics->VGetVelocity(m_pOwner->GetId()));
float velocityScalar = velocity.Length();
Vec3 direction(transform.GetDirection());
m_pGamePhysics->VApplyForce(direction, accelerationToApplyThisFrame, m_pOwner->GetId());
// logging
// [rez] Comment this back in if you want to debug the physics thrust & rotation stuff. It spams quite
// a bit of info the output window so I'm commenting it out for now.
/*
GCC_LOG("Actor", "Acceleration: " + ToStr(accelerationToApplyThisFrame) + "; velocityScalar: " + ToStr(velocityScalar) + \
"; direction: " + ToStr(direction) + "; direction.Length(): " + ToStr(direction.Length()) + \
"; velocity: " + ToStr(velocity) + "; velocity.Length(): " + ToStr(velocity.Length()));
*/
}
if (m_angularAcceleration != 0)
{
// calculate the acceleration this frame
float angularAccelerationToApplyThisFrame = m_angularAcceleration / 1000.f * (float)deltaMs;
m_pGamePhysics->VApplyTorque(transform.GetUp(), angularAccelerationToApplyThisFrame, m_pOwner->GetId());
// logging
// [rez] Comment this back in if you want to debug the physics thrust & rotation stuff. It spams quite
// a bit of info the output window so I'm commenting it out for now.
//GCC_LOG("Actor", "Angular Acceleration: " + ToStr(angularAccelerationToApplyThisFrame) );
}
}
void WatchMeProcess::VOnUpdate(unsigned long deltaMs)
{
StrongActorPtr pTarget = MakeStrongPtr(g_pApp->m_pGame->VGetActor(m_target));
StrongActorPtr pMe = MakeStrongPtr(g_pApp->m_pGame->VGetActor(m_me));
shared_ptr<TransformComponent> pTargetTransform = MakeStrongPtr(pTarget->GetComponent<TransformComponent>(TransformComponent::g_Name));
shared_ptr<TransformComponent> pMyTransform = MakeStrongPtr(pMe->GetComponent<TransformComponent>(TransformComponent::g_Name));
if (!pTarget || !pMe || !pTargetTransform || !pMyTransform)
{
GCC_ERROR("This shouldn't happen");
Fail();
}
Vec3 targetPos = pTargetTransform->GetPosition();
Mat4x4 myTransform = pMyTransform->GetTransform();
Vec3 myDir = myTransform.GetDirection();
myDir = Vec3(0.0f, 0.0f, 1.0f);
Vec3 myPos = pMyTransform->GetPosition();
Vec3 toTarget = targetPos - myPos;
toTarget.Normalize();
float dotProduct = myDir.Dot(toTarget);
Vec3 crossProduct = myDir.Cross(toTarget);
float angleInRadians = acos(dotProduct);
if (crossProduct.y < 0)
angleInRadians = -angleInRadians;
Mat4x4 rotation;
rotation.BuildRotationY(angleInRadians);
rotation.SetPosition(myPos);
pMyTransform->SetTransform(rotation);
}
