LumixEngine

ImGui in packaged game

By default, ImGui is not enabled in packaged game. To enable ImGui integration, you have to do following:

1. Uncomment #define LUMIX_APP_IMGUI_INTEGRATION in imgui_integration.h.
2. Build the solution including app project.

3. Set main.evox in the project root to the following:

    import "core:imgui" as ImGui
    import "core:input"
    import "core:keycode"
    import "core:ui"
    import "core:world"
   
    fn main(input : InputSystem, world : World) : void {
        var show_imgui : bool = false;
        while true {
            const time_delta : f32 = yield;
            for event in input.getEvents() {
                match event {
                    case KeyboardEvent:
                        if event.keycode == .F11 and event.down and not event.is_repeat {
                            show_imgui = not show_imgui;
                        }
                    case:
                }
            }
   
            if const ui = world.ui() {
                ui.getSystem().enableCursor(show_imgui);
                if show_imgui {
                    ImGui.begin("foo");
                    ImGui.textUnformatted("Hello World!");
                    ImGui.end();
                }
            }
        }
    }
   

4. Package your game.
5. Run the packaged game.
6. Press F11 to show ImGui in your packaged game.

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