text: /*************************************************************************/
  /*  grid_map_editor_plugin.h                                             */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                      https://godotengine.org                          */
  /*************************************************************************/
  /* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur.                 */
  /* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md)    */
  /*                                                                       */
  /* Permission is hereby granted, free of charge, to any person obtaining */
  /* a copy of this software and associated documentation files (the       */
  /* "Software"), to deal in the Software without restriction, including   */
  /* without limitation the rights to use, copy, modify, merge, publish,   */
  /* distribute, sublicense, and/or sell copies of the Software, and to    */
  /* permit persons to whom the Software is furnished to do so, subject to */
  /* the following conditions:                                             */
  /*                                                                       */
  /* The above copyright notice and this permission notice shall be        */
  /* included in all copies or substantial portions of the Software.       */
  /*                                                                       */
  /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
  /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
  /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
  /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
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  /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
  /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
  /*************************************************************************/
  
  #ifndef GRID_MAP_EDITOR_PLUGIN_H
  #define GRID_MAP_EDITOR_PLUGIN_H
  
  #include "editor/editor_node.h"
  #include "editor/editor_plugin.h"
  #include "editor/pane_drag.h"
  #include "grid_map.h"
  
  class SpatialEditorPlugin;
  
  class GridMapEditor : public VBoxContainer {
  	GDCLASS(GridMapEditor, VBoxContainer);
  
  	enum {
  
  		GRID_CURSOR_SIZE = 50
  	};
  
  	enum InputAction {
  
  		INPUT_NONE,
  		INPUT_PAINT,
  		INPUT_ERASE,
  		INPUT_PICK,
  		INPUT_SELECT,
  		INPUT_PASTE,
  	};
  
  	enum ClipMode {
  
  		CLIP_DISABLED,
  		CLIP_ABOVE,
  		CLIP_BELOW
  	};
  
  	enum DisplayMode {
  		DISPLAY_THUMBNAIL,
  		DISPLAY_LIST
  	};
  
  	UndoRedo *undo_redo;
  	InputAction input_action;
  	Panel *panel;
  	MenuButton *options;
  	SpinBox *floor;
  	double accumulated_floor_delta;
  	ToolButton *mode_thumbnail;
  	ToolButton *mode_list;
  	LineEdit *search_box;
  	HSlider *size_slider;
  	HBoxContainer *spatial_editor_hb;
  	ConfirmationDialog *settings_dialog;
  	VBoxContainer *settings_vbc;
  	SpinBox *settings_pick_distance;
  	Label *spin_box_label;
  
  	struct SetItem {
  
  		Vector3 pos;
  		int new_value;
  		int new_orientation;
  		int old_value;
  		int old_orientation;
  	};
  
  	List<SetItem> set_items;
  
  	GridMap *node;
  	MeshLibrary *last_mesh_library;
  	ClipMode clip_mode;
  
  	bool lock_view;
  	Transform grid_xform;
  	Transform edit_grid_xform;
  	Vector3::Axis edit_axis;
  	int edit_floor[3];
  	Vector3 grid_ofs;
  
  	RID grid[3];
  	RID grid_instance[3];
  	RID cursor_instance;
  	RID selection_mesh;
  	RID selection_instance;
  	RID selection_level_mesh[3];
  	RID selection_level_instance[3];
  	RID paste_mesh;
  	RID paste_instance;
  
  	struct ClipboardItem {
  		int cell_item;
  		Vector3 grid_offset;
  		int orientation;
  		RID instance;
  	};
  
  	List<ClipboardItem> clipboard_items;
  
  	Ref<SpatialMaterial> indicator_mat;
  	Ref<SpatialMaterial> inner_mat;
  	Ref<SpatialMaterial> outer_mat;
  	Ref<SpatialMaterial> selection_floor_mat;
  
  	bool updating;
  
  	struct Selection {
  
  		Vector3 click;
  		Vector3 current;
  		Vector3 begin;
  		Vector3 end;
  		bool active;
  	} selection;
  	Selection last_selection;
  
  	struct PasteIndicator {
  
  		Vector3 click;
  		Vector3 current;
  		Vector3 begin;
  		Vector3 end;
  		int orientation;
  	};
  	PasteIndicator paste_indicator;
  
  	bool cursor_visible;
  	Transform cursor_transform;
  
  	Vector3 cursor_origin;
  	Vector3 last_mouseover;
  
  	int display_mode;
  	int selected_palette;
  	int cursor_rot;
  
  	enum Menu {
  
  		MENU_OPTION_NEXT_LEVEL,
  		MENU_OPTION_PREV_LEVEL,
  		MENU_OPTION_LOCK_VIEW,
  		MENU_OPTION_CLIP_DISABLED,
  		MENU_OPTION_CLIP_ABOVE,
  		MENU_OPTION_CLIP_BELOW,
  		MENU_OPTION_X_AXIS,
  		MENU_OPTION_Y_AXIS,
  		MENU_OPTION_Z_AXIS,
  		MENU_OPTION_CURSOR_ROTATE_Y,
  		MENU_OPTION_CURSOR_ROTATE_X,
  		MENU_OPTION_CURSOR_ROTATE_Z,
  		MENU_OPTION_CURSOR_BACK_ROTATE_Y,
  		MENU_OPTION_CURSOR_BACK_ROTATE_X,
  		MENU_OPTION_CURSOR_BACK_ROTATE_Z,
  		MENU_OPTION_CURSOR_CLEAR_ROTATION,
  		MENU_OPTION_PASTE_SELECTS,
  		MENU_OPTION_SELECTION_DUPLICATE,
  		MENU_OPTION_SELECTION_CUT,
  		MENU_OPTION_SELECTION_CLEAR,
  		MENU_OPTION_SELECTION_FILL,
  		MENU_OPTION_GRIDMAP_SETTINGS
  
  	};
  
  	SpatialEditorPlugin *spatial_editor;
  
  	struct AreaDisplay {
  
  		RID mesh;
  		RID instance;
  	};
  
  	void update_grid();
  	void _configure();
  	void _menu_option(int);
  	void update_palette();
  	void _set_display_mode(int p_mode);
  	ItemList *mesh_library_palette;
  	void _item_selected_cbk(int idx);
  	void _update_cursor_transform();
  	void _update_cursor_instance();
  	void _update_clip();
  
  	void _text_changed(const String &p_text);
  	void _sbox_input(const Ref<InputEvent> &p_ie);
  
  	void _icon_size_changed(float p_value);
  
  	void _clear_clipboard_data();
  	void _set_clipboard_data();
  	void _update_paste_indicator();
  	void _do_paste();
  	void _update_selection_transform();
  	void _validate_selection();
  	void _set_selection(bool p_active, const Vector3 &p_begin = Vector3(), const Vector3 &p_end = Vector3());
  
  	void _floor_changed(float p_value);
  	void _floor_mouse_exited();
  
  	void _delete_selection();
  	void _fill_selection();
  
  	EditorNode *editor;
  	bool do_input_action(Camera *p_camera, const Point2 &p_point, bool p_click);
  
  	friend class GridMapEditorPlugin;
  
  protected:
  	void _notification(int p_what);
  	void _node_removed(Node *p_node);
  	static void _bind_methods();
  
  public:
  	bool forward_spatial_input_event(Camera *p_camera, const Ref<InputEvent> &p_event);
  
  	void edit(GridMap *p_gridmap);
  	GridMapEditor() {}
  	GridMapEditor(EditorNode *p_editor);
  	~GridMapEditor();
  };
  
  class GridMapEditorPlugin : public EditorPlugin {
  
  	GDCLASS(GridMapEditorPlugin, EditorPlugin);
  
  	GridMapEditor *grid_map_editor;
  	EditorNode *editor;
  
  protected:
  	void _notification(int p_what);
  
  public:
  	virtual bool forward_spatial_gui_input(Camera *p_camera, const Ref<InputEvent> &p_event) { return grid_map_editor->forward_spatial_input_event(p_camera, p_event); }
  	virtual String get_name() const { return "GridMap"; }
  	bool has_main_screen() const { return false; }
  	virtual void edit(Object *p_object);
  	virtual bool handles(Object *p_object) const;
  	virtual void make_visible(bool p_visible);
  
  	GridMapEditorPlugin(EditorNode *p_node);
  	~GridMapEditorPlugin();
  };
  
  #endif // CUBE_GRID_MAP_EDITOR_PLUGIN_H
  