Schedules

Bevy💋Godot’s supported scedules are a little inconsistent, but here’s the breakdown:

Startup

Bevy💋Godot DOES support Startup. It runs immediately after the scene tree is ready, so it basically runs as a _ready function for your initial scene.

use godot::prelude::*;
use bevy::prelude::*;
use bevy_kissing_godot::prelude::*;

#[kiss_bevy(node_name = PoopPeeKisser)]
fn main(app: &mut App) {
	app.add_scedule(Startup, on_game_start)
}

fn on_game_start(scene_tree: NonSend<Gd<SceneTree>>) {
	godot_print!("The game has started with {} nodes!", scene_tree.get_node_count());
}

Update

Update is not supported in Bevy💋Godot. You should use Process instead.

Process

Process runs every “process” frame in Godot. It runs in the _process function in your autoload Node.

You can use the ProcessDelta resource to access the delta value for that process frame.

use godot::prelude::*;
use bevy::prelude::*;
use bevy_kissing_godot::prelude::*;

#[kiss_bevy(node_name = PoopPeeKisser)]
fn main(app: &mut App) {
	app.add_scedule(Process, on_game_update)
}

fn on_game_update(delta: Res<ProcessDelta>) {
	godot_print!("The process frame ran with {} delta.", *delta);
}

PhysicsProcess

PhysicsProcess is the same as Process except for the _physics_process frame.

Similarly, you can use the PhysicsProcessDelta resource to access its delta.

use godot::prelude::*;
use bevy::prelude::*;
use bevy_kissing_godot::prelude::*;

#[kiss_bevy(node_name = PoopPeeKisser)]
fn main(app: &mut App) {
	app.add_scedule(PhysicsProcess, on_game_update_physics)
}

fn on_game_update_physics(delta: Res<PhysicsProcessDelta>) {
	godot_print!("The physics process frame ran with {} delta.", *delta);
}