Guarantee an event listener to be called before other listeners of the same event?

[Mahi]

How would I ensure that my player_spawn event listener gets called before others?
I'm trying to reset every player's gravity to 1.0 whenever they spawn, and I want to make sure it happens before other player_spawn functions modify the gravity again.

Here's an easy example code of what I have:

Syntax: Select all

# ../plugins/foo/bar.py
@Event
def player_spawn(game_event):
    player = PlayerEntity(index_from_userid(game_event.get_int('userid')))
    player.gravity = 1.0

# ../plugins/foo/foo.py
@Event
def player_spawn(game_event):
    player = PlayerEntity(index_from_userid(game_event.get_int('userid')))
    player.gravity -= 0.5

and I need to make sure that player's gravity gets reset in bar.py before it's reduced by 0.5 in foo.py

[stonedegg]

You could do something like this:

Syntax: Select all

# ../plugins/foo/bar.py

grav = {}

@Event
def player_spawn(game_event):
    userid = game_event.get_int('userid')
    player = PlayerEntity(index_from_userid(userid))
    player.gravity = 1.0
    grav[userid] = 1



# ../plugins/foo/foo.py

from foo.bar import grav

@Event
def player_spawn(game_event):
    userid = game_event.get_int('userid')
    if userid in grav and grav[userid] == 1:
        # delay this or something
        player = PlayerEntity(index_from_userid(userid))
        player.gravity -= 0.5
        grav[userid] = 0

Also, i'm fairly sure that whichever plugin gets loaded first, will execute events first.

[satoon101]

The first one registered is the first one called. Just make sure your imports are set so that the one you want first gets imported first. Either that, or create a pre-event hook and change it there.