mittens_engine/engine/ecs/component/
background.rs

1use crate::engine::ecs::component::Component;
2
3#[derive(Debug, Default, Clone, Copy)]
4pub struct BackgroundComponent {
5    /// If true, renderables under this node render in the background *occluded+lit* stage.
6    ///
7    /// This stage is intended to depth-test/write against itself (for self-occlusion) and
8    /// participate in lighting, while still not occluding the foreground (the renderer clears
9    /// depth before drawing the foreground).
10    pub occlusion_and_lighting: bool,
11
12    /// If true, renderables under this node are eligible for ray casting (BVH insertion).
13    ///
14    /// Default is false because background scene dressing (clouds, skyboxes, etc.) typically
15    /// should not be hit-testable.
16    pub ray_casting: bool,
17}
18
19impl BackgroundComponent {
20    pub fn new() -> Self {
21        Self {
22            occlusion_and_lighting: false,
23            ray_casting: false,
24        }
25    }
26
27    pub fn with_occlusion_and_lighting(mut self) -> Self {
28        self.occlusion_and_lighting = true;
29        self
30    }
31
32    pub fn with_ray_casting(mut self) -> Self {
33        self.ray_casting = true;
34        self
35    }
36}
37
38impl Component for BackgroundComponent {
39    fn as_any(&self) -> &dyn std::any::Any {
40        self
41    }
42
43    fn as_any_mut(&mut self) -> &mut dyn std::any::Any {
44        self
45    }
46
47    fn name(&self) -> &'static str {
48        "background"
49    }
50
51    fn to_mms_ast(
52        &self,
53        _world: &crate::engine::ecs::World,
54    ) -> crate::scripting::ast::ComponentExpression {
55        use crate::engine::ecs::component::ce_helpers::*;
56        let mut ce = ce("Background");
57        if self.occlusion_and_lighting {
58            ce = ce.with_call("occlusion_and_lighting", vec![]);
59        }
60        if self.ray_casting {
61            ce = ce.with_call("ray_casting", vec![]);
62        }
63        ce
64    }
65}
mittens_engine/engine/ecs/component/background.rs

mittens_engine/engine/ecs/component/
background.rs
