concinnity-engine 0.19.53

Runtime engine for Concinnity: ECS schedule, graphics, spawn, streaming
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

// Address a UI component by the asset id it was built from. The overlay
// components are authored as named assets and referenced by id long after the
// world is decomposed, so every HUD / menu / story update resolves an id to the
// live component before writing it.

use concinnity_core::components::TextLabel;
use concinnity_core::ecs::asset_id::AssetId;
use concinnity_core::ecs::{ComponentSlot, PipelineContext};

// Mutate the `C` of the entity the asset `id` was loaded into. An unset
// reference or an asset with no `C` is a silent no-op.
pub(crate) fn update<C: ComponentSlot>(
    ctx: &mut PipelineContext,
    id: Option<AssetId>,
    apply: impl FnOnce(&mut C),
) {
    if let Some(c) = id.and_then(|id| ctx.get_mut_by_id::<C>(id)) {
        apply(c);
    }
}

// Overwrite the text of the TextLabel asset `id`, if present.
pub(crate) fn set_text(ctx: &mut PipelineContext, id: AssetId, text: &str) {
    update::<TextLabel>(ctx, Some(id), |l| l.content = text.to_string());
}