euv_engine/entity/
trait.rs

1use crate::*;
2
3/// The base trait for all entity components.
4///
5/// Components encapsulate behavior that can be attached to an `Entity`.
6/// The engine calls lifecycle methods at appropriate times during the scheduler loop.
7pub trait Component {
8    /// Called once when the component is first added to an active entity
9    /// in a scene.
10    fn on_start(&mut self);
11
12    /// Called every fixed timestep with the elapsed time since the last update.
13    ///
14    /// # Arguments
15    ///
16    /// - `f64` - The delta time in seconds.
17    fn on_update(&mut self, delta_time: f64);
18
19    /// Called every render frame to draw the component onto the canvas.
20    ///
21    /// # Arguments
22    ///
23    /// - `&CanvasRenderingContext2d` - The canvas 2D rendering context.
24    /// - `&Transform2D` - The world-space transform of the owning entity.
25    fn on_render(&self, context: &CanvasRenderingContext2d, transform: &Transform2D);
26
27    /// Called once when the component is being removed or the entity is destroyed.
28    fn on_destroy(&mut self);
29
30    /// Returns the name of this component type for debugging and identification.
31    ///
32    /// # Returns
33    ///
34    /// - `&str` - The component name.
35    fn name(&self) -> &str;
36}
euv_engine/entity/trait.rs

euv_engine/entity/
trait.rs
