refactor: create gui widget classes

include/render/gui/MobTooltip.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include "GuiWidget.h"
+
+namespace td {
+
+namespace game {
+
+class Mob;
+    
+} // namespace game
+
+namespace gui {
+
+class MobTooltip : public GuiWidget {
+private:
+    const game::Mob* m_Mob;
+public:
+    MobTooltip(client::Client* client);
+
+    virtual void render();
+
+    void setMob(const game::Mob* mob) { m_Mob = mob; }
+};
+
+} // namespace gui
+} // namespace td

include/render/gui/TowerPlacePopup.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include "GuiWidget.h"
+
+#include <glm/glm.hpp>
+
+namespace td {
+namespace gui {
+
+class TowerPlacePopup : public GuiWidget {
+private:
+    glm::vec2 m_ClickWorldPos;
+public:
+    TowerPlacePopup(client::Client* client);
+
+    virtual void render();
+
+    void setClickPos(const glm::vec2& worldPos);
+};
+
+} // namespace gui
+} // namespace td