Blow vehicle towards a point

[botanist]

Hmm, tried a few things, but they all don't work correctly. I wanna create a function which can blow an element (ie a vehicle) towards a point with setElementVelocity. What I've did is probably too embarrassing to post, but the solution shouldn't be too hard. Anyone?

[dzek (varez)]

i had somewhere a function to count angle between points, and i have a function to get an angle (comparing to Y axis) of element velocity - which you will have to "inverse" in some way. then you will be able to count it.

let me search for them

make a function from this, and return angle

viewtopic.php?f=91&t=29586&p=324244&hilit=north#p324244

and a function to get angle of velocity:

  
function getElementVelocityAngle(vehicle) 
    if (isElement(vehicle)) then 
        local vx,vy,vz = getElementVelocity(vehicle) 
        local cosX2 = (math.deg(math.atan(vx/vy))+90) 
        if (vy>0) then cosX2=cosX2+180 end 
        cosX2 = 360-cosX2 
        cosX2 = cosX2+270 
        if (cosX2 > 360) then cosX2 = cosX2-360 end 
        return cosX2 
    end 
end 
  

idk how to reverse it

[botanist]

I can't use getElementVelocity. My element will be mostly standing still

[DiSaMe]

function blowElement(element,x,y,z,speed) 
    local ex,ey,ez = getElementPosition(element) 
    x,y,z = x-ex,y-ey,z-ez 
    local dist = math.sqrt(x*x+y*y+z*z) 
    x = x*speed/dist 
    y = y*speed/dist 
    z = z*speed/dist 
    setElementVelocity(element,x,y,z) 
end 

Didn't test, but it should work.

[dzek (varez)]

remi-x - this was for getting this, not setting..

Doomed - lol, this makes sense.. probably all that math makes my brain crazy and now i want to solve every problem with this o_O

[botanist]

code

Epic win.

Guru.