1 files changed, 48 insertions, 0 deletions
diff --git a/src/debug_overlay.jai b/src/debug_overlay.jai
new file mode 100644
index 0000000..90adc87
--- /dev/null
+++ b/src/debug_overlay.jai
@@ -0,0 +1,48 @@
+// 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);
+}