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path: root/src/debug_overlay.jai
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// Loaded into main.jai so it inherits global imports.

#scope_file
debug_lines: [..] string;
debug_panel: UI_Panel;
panel_initialized := false;

#scope_export

debug_add_value :: (fmt: string, args: .. Any) {
    builder: String_Builder;
    print_to_builder(*builder, fmt, ..args);
    array_add(*debug_lines, builder_to_string(*builder));
}

render_debug_overlay :: (font: *Simp.Dynamic_Font) {
    if !font return;

    if !panel_initialized {
        debug_panel.x = cast(float)window_width - 800.0;
        debug_panel.y = cast(float)window_height - 40.0;
        debug_panel.w = 300.0;
        debug_panel.h = 40.0;
        debug_panel.font = font;
        ui_register_panel(*debug_panel);
        panel_initialized = true;
    }

    target_h := 50.0 + debug_lines.count * 32.0;
    top := debug_panel.y + debug_panel.h;
    debug_panel.h = target_h;
    debug_panel.y = top - debug_panel.h;

    array_reset_keeping_memory(*debug_panel.elements);

    array_add(*debug_panel.elements, .{type=.HEADER, id=0, x0=0.0, y0=debug_panel.h - 40.0, x1=debug_panel.w, y1=debug_panel.h, label="Debug"});

    y := debug_panel.h - 40.0;
    for debug_lines {
        y -= 32.0;
        array_add(*debug_panel.elements, .{type=.DYNAMIC_TEXT, id=0, x0=10.0, y0=y, x1=debug_panel.w, y1=y+32.0, label=it});
    }
}

clear_debug_overlay :: () {
    for debug_lines free(it);
    array_reset_keeping_memory(*debug_lines);
}