scene switcher in OBS

scene-switch.py

import obspython as obs
import random

def cycle():
    # get a list of all scenes from OBS
    scenes = obs.obs_frontend_get_scenes()
    
    # get current scene
    current_scene = obs.obs_frontend_get_current_scene()
    
    # get index of that current scene from our list of scenes
    idx = scenes.index(current_scene)
    
    # pick a random one, just in case line 12 doesn't work
    next_idx = random.choice(scenes)
    if idx is not None:
        # if line 12 worked, then we'll pick the "next" one in the list
        next_idx = (len(scenes) + idx+1) % len(scenes)
        
    # set OBS scene to that scene
    obs.obs_frontend_set_current_scene(scenes[next_idx])

    
def script_properties():
    # this is the "setup panel" for the script
    props = obs.obs_properties_create()
    
    # it allows a timer here between 30 seconds and 1,000 seconds, and defaults to 30 seconds
    # if you want to start faster, like a 10-second switch, change the first "30000" to "10000"
    # the order is "minimum value", "maximum value", and "default value"
    obs.obs_properties_add_int(props, "cycle_rate", "Cycle Rate(ms)", 30000, 1000000, 30000)
    return props

def script_update(settings):
    '''
    this is what runs the whole thing
    basically, it clears any previous timers for the "cycle" method above
    then it gets the "cycle rate" variable from the settings panel that you set
    and then adds a timer for that cycle rate to call your "cycle" method.
    '''
    obs.timer_remove(cycle)
    blink_rate = obs.obs_data_get_int(settings, "cycle_rate")
    obs.timer_add(cycle, blink_rate)  # Change scene every cycle_rate ms