feat: add world builder state

1 files changed, 65 insertions, 0 deletions

diff --git a/src/states/world_builder_state.h b/src/states/world_builder_state.h
new file mode 100644
index 0000000..c587fbe
--- /dev/null
+++ b/src/states/world_builder_state.h
@@ -0,0 +1,65 @@
+#pragma once
+
+#include "core/camera.h"
+#include "core/state.h"
+#include "core/event.h"
+#include "core/log.h"
+
+#include "engine/scene.h"
+#include "engine/object.h"
+
+#include "rendering/renderer.h"
+#include "rendering/shader.h"
+#include "rendering/vertex_array.h"
+
+#include <imgui.h>
+#include <ImGuizmo.h>
+
+#include <vector>
+#include <memory>
+
+namespace Donut
+{
+    class WorldBuilderState
+        : public State
+    {
+    public:
+        ~WorldBuilderState() = default;
+        
+        void on_enter()                 override;
+        void on_exit()                  override;
+        void on_update(float delta_time) override;
+        void on_render()                override;
+        void on_im_ui_render()            override;
+        void on_event(Event& event)     override;
+    private:
+        void add_sphere();
+        void remove_selected_object();
+        void clear_scene();
+        void save_scene();
+        void load_scene();
+        void render_scene();
+    private:
+        Scene  m_scene;
+        Camera m_camera;
+        bool   m_initialized = false;
+        
+        glm::vec3 m_new_object_position = glm::vec3(0.0f, 0.0f, 0.0f);
+        float     m_new_object_radius   = 1.0f;
+        glm::vec3 m_new_object_color    = glm::vec3(1.0f, 1.0f, 1.0f);
+        float     m_new_object_specular = 0.5f;
+        float     m_new_object_emission = 0.0f;
+        
+        int       m_selected_object_index = -1;
+        bool      m_camera_dragging      = false;
+        glm::vec2 m_last_mouse_pos        = glm::vec2(0.0f, 0.0f);
+        
+        ImGuizmo::OPERATION m_gizmo_operation = ImGuizmo::TRANSLATE;
+        ImGuizmo::MODE      m_gizmo_mode      = ImGuizmo::LOCAL;
+        
+        bool m_show_object_list    = true;
+        bool m_show_object_creator = true;
+        bool m_show_scene_info     = true;
+        bool m_show_gizmo_controls = true;
+    };
+};