feat: added HUD class

modules/wave_survival/heads_up_display.cpp

@@ -0,0 +1,23 @@
+#include "heads_up_display.h"
+
+void HeadsUpDisplay::_bind_methods() {
+}
+
+void HeadsUpDisplay::enter_tree() {
+}
+
+void HeadsUpDisplay::_notification(int what) {
+	if (Engine::get_singleton()->is_editor_hint()) {
+		return;
+	}
+	switch (what) {
+		default:
+			return;
+		case NOTIFICATION_ENTER_TREE:
+			enter_tree();
+			return;
+	}
+}
+
+void HeadsUpDisplay::set_reticle_visibility(bool visible) {
+}

modules/wave_survival/heads_up_display.h

@@ -0,0 +1,21 @@
+#ifndef HEADS_UP_DISPLAY_H
+#define HEADS_UP_DISPLAY_H
+
+#include "scene/gui/control.h"
+
+class HeadsUpDisplay : public Control {
+	GDCLASS(HeadsUpDisplay, Control);
+	static void _bind_methods();
+	void on_child_entered(Node *node);
+	void enter_tree();
+protected:
+	void _notification(int what);
+
+public:
+	void set_reticle_visibility(bool visible);
+
+private:
+	Control *reticle{ nullptr };
+};
+
+#endif // !HEADS_UP_DISPLAY_H