AddImpulse with no momentum?

Development World Creation
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1

Hello,

I have uploaded a video which shows up my actual problem:

Here is the relevant portion of the C++ code to pass the ball:

FVector impulse = ComputePassImpulse();

MeshComponent->SetPhysicsLinearVelocity( FVector::ZeroVector );
MeshComponent->SetPhysicsAngularVelocity( FVector::ZeroVector );

MeshComponent->AddImpulse( impulse, NAME_None, true );

As you can see, when the character is standing idle when I pass the ball, the impulse to give the ball is correctly computed. But when I move the character, the momentum of the character is added to the impulse I give to the ball, despite my calls to SetPhysicsLinearVelocity and SetPhysicsAngularVelocity with FVector::ZeroVector.

Is it possible to counter balance this initial momentum and call AddImpulse on a “not-moving” ball?

Thanks in advance

2

I think your problem is in your computePassImpulse function. If you post that we could probably help give you an answer.

3

Thanks for your input.

The ComputePassImpulse function is not the problem here, as it computes a correct force to apply to the ball when the character owning the ball is not moving.

But it’s not a problem anymore. I got rid of physics as soon as I make the ball move (be it a pass or a shoot) and compute the trajectory by myself using equation of motion. It’s much more accurate this way :slight_smile: