flecs_ecs 0.2.1

Rust API for the C/CPP flecs ECS library <https://github.com/SanderMertens/flecs>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36

use crate::{addons::system::SystemBuilder, prelude::*};

impl<T: QueryTuple> SystemBuilder<'_, T> {
    /// Set system interval.
    ///
    /// This operation will cause the system to be ran at the specified interval.
    ///
    /// The timer is synchronous, and is incremented each frame by `delta_time`.
    pub fn set_interval(&mut self, interval: f32) -> &mut Self {
        self.desc.interval = interval;
        self
    }

    /// Sets a rate filter on the system, causing it to run once every `rate`
    /// ticks. The tick source may be any entity, including another system.
    pub fn set_tick_source_rate(&mut self, tick_source: impl Into<Entity>, rate: i32) -> &mut Self {
        self.desc.rate = rate;
        self.desc.tick_source = *tick_source.into();
        self
    }

    /// Sets a rate filter on the system, causing it to run once every `rate`
    /// ticks. If a tick source was provided, this just updates the rate of the
    /// system.
    pub fn set_rate(&mut self, rate: i32) -> &mut Self {
        self.desc.rate = rate;
        self
    }

    /// Set tick source.
    /// This operation sets a shared tick source for the system.
    pub fn set_tick_source(&mut self, tick_source: impl IntoEntity) -> &mut Self {
        self.desc.tick_source = *tick_source.into_entity(self.world());
        self
    }
}