How to get speed of object?

Game Engine Game Engine Support and Discussion
1

I have one question:

If you know, please write as much lines of Python as it’s needed, anyway this question is related to Python.

How to get speed of the object? For example, i have object, called “Something” and i want to make property called “Speed” the same as Something’s speed. Please write such line of script, if you know, of course.

Thanks for that people who will answer me.

2

this is from memory, it is likely to have bugs

import GameLogic
import math
cont = GameLogic.getCurrentController()
obj = cont.getOwner()
linv = obj.getLinearVelocity()
obj.speed = math.sqrt(liv[0]*linv[0]+linv[1]*linv[1]+linv[2]*linv[2])
3

thanks for you.

It can seem funny, anyway for these people, who program Python. That’s below:

Could you also write, for example, line of script, making force of object (for example) ten??? I try and try but i haven’t discovered yet why doesn’t this line work as it has to work:

owner.setForce(10, 10, 10 bool local=TRUE)

Could you show my mistake?

Sorry for mistakes i made, but i’m not from England (i’m from Poland)

%|

4

and next question, this script you showed me, is it getting speed Y or speed X or speed Z, or X speed + Y speed + Z Speed???
:slight_smile:

5

Hi, i’m just trying your script with is working well with velocity forces.
I’m working on camera mouvment with ipo. I just convert ipo to force to
see the speed value. But it’s not working well.
So, is there a possibity to get velocity value with only ipo curves, or getting speed value with mouvement and object position !! ???

6

Well, it will not be possible to make camera actor & dynamic

7

i dont think it should have bool local=true but if it needs a boolean just right TRUE.
(please correct me if i am wrong)

8

Here is how to get the Velocity (Updated):

import GameLogic as gl
con = gl.getCurrentController()
own = con.getOwner()
speed = own.getVelocity()
speedx = speed[0]
speedy = speed[1]
speedz = speed[2]

if speedx < 0:
	speedx = speedx * -1

if speedy < 0:
	speedy = speedy * -1

if speedz < 0:
	speedz = speedz * -1

speedall = speedx + speedy + speedz

own.speed = speedall #Put whichever speed variable you want here
9

z3r0 d>


import GameLogic
import math
cont = GameLogic.getCurrentController()
obj = cont.getOwner()
linv = obj.getLinearVelocity()
obj.speed = math.sqrt(<b>liv</b>[0]*linv[0]+linv[1]*linv[1]+linv[2]*linv[2]) 
 
#Typo I believe

It’s supposed to be “linv”, right?

Chaser>


import GameLogic as gl
con = gl.getCurrentController() 
own = <b>gl</b>.getOwner()                 #Typo?
speed = own.getVelocity()
 
speedx = speed[0]
speedy = speed[1]
speedz = speed[2]
speedall = speedx + speedy + speedz
 
own.Speed = #Put whichever speed you want here.

I think it should be “con.getOwner()”, right?

10

it’s “linv” yes
and “con” fort the second :wink: