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About steering and velocity


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#1   Crossbones+   -  Reputation: 2833

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Posted 15 June 2014 - 09:35 AM

I was reading couple of tutorials regarding steering behaviour and there is one thing that confuses me.
To calculate position for my agent i need to sum up all steer forces and accumulate into velocity:

steerForce = calculateSteeringForces();
steerForce.truncate(maxForce);
velocity += steerForce;
velocity.truncate(maxSpeed);
position += velocity;

I will take seek behaviour for example:
desiredVel = normalize(target - agent.position) * maxVel;
return desiredVel - agent.velocity;

and at some point i need to stop my agent from moving, should i check magnitude of steerForce like:
steerForce = calculateSteeringForces();
if(steerForce.length() < epsilon)
    return; //stop
steerForce.truncate(maxForce);
velocity += steerForce;
velocity.truncate(maxSpeed);
position += velocity;

because velocity is always > 0.

#2   Moderators   -  Reputation: 21086

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Posted 15 June 2014 - 06:03 PM

"Seek" will rarely give you a force that results in stopping. If you want to land on a specific target, you should use the "Arrive" force.
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