Controlling multiple copies of an object?

Game Engine Game Engine Support and Discussion
1

I am trying to create a particle system and have the following code to add 100 copies of an object…

from bge import logic
import math
import random
particle_list = []
def spawner():
    scene = logic.getCurrentScene()
    cont = logic.getCurrentController()
    object = cont.owner
    global particle_list
    
    for n in range(0,100,1):
        x = random.uniform(-20,20)
        y = random.uniform(-20,20)
        z = random.uniform(0,20)
        object.worldPosition = [x,y,z]
        particle_list.append(scene.addObject("Icosphere",object,0))

It works correctly but I now have a list with 100 identical names! From reading the forums I know that an object name is read only so what work arounds are there to be able to control the individual particles?

Thank you,
Andrew

2

While the names are identical, the objects they represent are not. Simply iterate over your list and manipulate each particle, it should work fine:

for particle in particle_list:
    particle.worldPosition.x += random.random()

Also, you can replace range(0, 100, 1) with range(100) as they have the same behavior. You may also exclude the last parameter 0 from addObject, as it defaults to 0 anyway.

3

Brilliant, thank you.

Andrew