Get Relative Velocity

[tommybricksetti]

I want to get velocity relative to the forward vector.

Code: [Select]

%vel = %obj.getVelocity();
%fwdv = %obj.getForwardVector();
%dv = getWords(%vel,0,1);
%fv = vectorScale(%fwdv,%dv);
if(%fv > 0.15)
{
}That doesn't seem to work.

[Ad Bot]

[Greek2me]

The first thing I noticed is that you're using vectorScale wrong - the second argument should only be one number. You might want to read this tutorial.

[tommybricksetti]

Code: [Select]

%vel = %obj.getVelocity();
%fwdv = %obj.getForwardVector();
%fwdx = getWord(%fwdv,0);
%fwdy = getWord(%fwdv,1);
%x = vectorScale(%fwdx,%fwdy);
%y = vectorScale(%fwdv,0.25);
%fvel = vectorScale(fwdv,%x);
if(%fvel > %y)
{New code; I still have no idea what I'm doing. I need to get the forward velocity and check if it is greater than 0.25.

[Perlin Noise]

i think someone once made a getRelativeVelocity(); function.

[Reinforcements]

Read dis if you haven't, might be of help to you.

http://forum.blockland.us/index.php?topic=224122.0

[jes00]

i think someone once made a getRelativeVelocity(); function.

OP did that :/

Code: [Select]

function player::getRelativeVelocity(%player,%xyz)
{
%x = getWord(%xyz,0);
%y = getWord(%xyz,1);
%z = getWord(%xyz,2);
%forwardVector = %player.getForwardVector();
%forwardX = getWord(%forwardVector,0);
%forwardY = getWord(%forwardVector,1);
}

function newcar::addRelativeVelocity(%newcar,%xyz)
{
%x = getWord(%xyz,0);
%y = getWord(%xyz,1);
%z = getWord(%xyz,2);
%forwardVector = %newcar.getForwardVector();
%forwardX = getWord(%forwardVector,0);
%forwardY = getWord(%forwardVector,1);
%newcar.addVelocity((%x * %forwardY + %y * %forwardX) SPC (%y * %forwardY + %x * -%forwardX) SPC %z);
}


Not sure if it works or not.

[Zeblote]

Not sure if it works or not.

No it doesn't

[Perlin Noise]

I think it was an event.

[Treynolds416]

I think it was an event.

That would be setRelativeVelocity (by z0w0)
It's the opposite of what he needs

[tommybricksetti]

That would be setRelativeVelocity (by z0w0)
It's the opposite of what he needs

True. Any helpful comments?

[Treynolds416]

I can't think of an easier way other than using lots of trig in a complicated function

[tommybricksetti]

Can't I just do something with the forwardVector? Like condense the directional velocity

Code: [Select]

%vel = %obj.getVelocity();
%dv = getWords(%vel,0,1); and then somehow fit it into this current velocity code

Code: [Select]

%cv = vectorScale(%obj.getForwardVector(),%dv);?

[DYLANzzz]

So you want the velocity but only the part matching the forward vector or something? I'm utterly confused by the terms here but I think this is what you want?

Code: [Select]

%velocity = %obj.getVelocity();
%forwardvector = %obj.getForwardVector(); //Returns normalized x and y of player's orientation as regards to forward. Z is always 0
%forwardx = getWord(%forwardvector,0);
%forwardy = getWord(%forwardvector,1);
%relvelocityx = vectorScale(%velocity,%forwardx);
%relvelocityy = vectorScale(%velocity,%forwardy);
%relvel = %relvelocityx SPC %relvelocityy SPC "0";
if(VectorLen(%relvel) > 0.25))
{}

[heedicalking]

he probably wants a velocity check relative to the object's forward velocity. as in, to check how fast its moving forward.

[tommybricksetti]

he probably wants a velocity check relative to the object's forward velocity. as in, to check how fast its moving forward.

This. At some point I'll want to know left and right as well, but for now just forward or backward velocity.