How to manipulate /output integers/strings in Python

Game Engine Game Engine Support and Discussion
#1

Hi all,

I’ve taken the plunge, and started to try Python. My first small task was to get a script to read the speed of an object and output it to a property. I found and adapted one from the archives, but also thought it would be nice to have an automatic kph/mph string on the end of the speed readout. I have tried using str() but I get ‘xspeed kph’ rather than ‘123 kph’- here is what I have so far:


import GameLogic

controller = GameLogic.getCurrentController()
object = controller.owner

Xspeed, Yspeed, Zspeed = object.getLinearVelocity(False)

linSum = Xspeed 

xValue = linSum

object['speed'] = xValue

kph = object['text2']

object['text'] = str("xValue" + "kph")

Where am I going wrong? I often get errors relating to str and int not mixing but I thought the str() command outputs what you send to it.

Thanks for your time!

Paul

#2

try:
object[‘text’] = str(xValue) +“kph”

#3

I cant believe it was that simple, I feel a bit of an idiot!

I’m a bit confused as to what is going on though- am I isolating the integer from the string (so Python knows they are different types rather than making them all strings)?

#4

shouldn’t it be:
object[‘text’] = str(xValue) + str(kph)
assuming you want to set the words “kph” from a property.
Of course that method works fine if not.

#5

Both ways work well, but I have a minor problem-the velocity is now being read in a float style value (like 5.0032434234kph rather than 5kph). How would I change that to an integer (i.e whole numbers)?

Attachments

python.blend (481 KB)

#6

Use the int() function. For example:


object['text'] = str(int(xValue)) +"kph"
#7

should also be able to do

object['text'] = int(xValue),"kph"
#8

Cool, thanks for those suggestions SolarLune and Siegel!

By the way SolarLune, when is the next part of your Python tutorial series out? 2.5 series tutorials are like gold dust!

#9

D’oh, I’ve gotta get on it. Since today’s Saturday, I’ll probably upload another today. Glad to know someone’s reading them!

#10

Like I said, 2.5 tutorials are quite rare- and its really good having every line explained in detail in a game context. As a suggestion, it may be useful to have a small tutorial on converting old 2.49b scripts to 2.5x (or cover the basics). Either that or have a vault of useful mall scripts that people can pick apart.