bevscode

Embeddable text editing and rendering plugins for Bevy. Drop them into any app and they coexist with your existing ECS world.

Scope: this is a component library, not a standalone IDE. It gives you a capable code-editing widget you can embed inside a Bevy application — window management, project trees, debugger UIs, and similar IDE-level concerns are outside its scope.

Crate	What it does
bevy_instanced_text (separate repo)	GPU-instanced text rendering: glyph atlas, soft-wrap layout, overlays.
bevy_instanced_text_interaction (separate repo)	Shared UI primitives: clipboard, selection, caret rendering, picking observers. No ropey dep.
bevy_instanced_text_editor	Rope-backed editable text: edit history, undo/redo, typed-char insertion, anchors.
bevy_tree_sitter	Tree-sitter incremental syntax highlighting.
bevy_lsp	Async LSP transport. Responses arrive as Bevy messages.
bevscode	Code editor: multi-cursor, folding, brackets, line numbers, LSP UI.
bevsterm	PTY-backed terminal widget.	(not published — wezterm deps not on crates.io)

Bevy compatibility

bevscode	Bevy
0.1	0.18

Quick start

use bevy::prelude::*;
use bevscode::prelude::*;

fn main() {
    App::new()
        .add_plugins(DefaultPlugins)
        .add_plugins(CodeEditorPlugins)
        .add_systems(Startup, |mut commands: Commands| {
            commands.spawn(Camera2d);
            // AutoResizeViewport keeps the editor's Node sized to the window.
            commands.spawn((CodeEditor, AutoResizeViewport));
        })
        .run();
}

For a fixed-size pane (e.g. split layout), omit AutoResizeViewport and set an explicit Node:

commands.spawn((
    CodeEditor,
    Node { width: Val::Px(800.0), height: Val::Px(600.0), ..default() },
));

Composition

Pick the plugin set that matches your use case:

// Just GPU text rendering (labels, HUDs)
.add_plugins(InstancedTextPlugins)

// Rendering + selection / clipboard / scroll-wheel
.add_plugins((
    InstancedTextPlugins,
    InstancedTextInteractionPlugin::<TextSpan>::default(),
))

// Full code editor (cursor, edits, syntax, folding, LSP UI)
.add_plugins(CodeEditorPlugins)

State is plain ECS — query it from any system:

use bevy_instanced_text_editor::RopeBuffer;

fn status_bar(
    editors: Query<(&TextBuffer<RopeBuffer>, &CursorState), With<CodeEditor>>,
) {
    for (buffer, cursor) in &editors { /* … */ }
}

To handle a built-in editor action (save, open, completion request, …), add a handler system with EditorAppExt:

use bevscode::prelude::*;

App::new()
    .add_plugins(CodeEditorPlugins)
    .add_editor_action_handler(my_save_handler)
    .run();

fn my_save_handler(mut events: MessageReader<SaveRequested>) {
    for ev in events.read() { /* … */ }
}

License

MIT OR Apache-2.0