godot/modules/navigation/navigation_mesh_editor_plugin.cpp

/*************************************************************************/
/*  navigation_mesh_editor_plugin.cpp                                    */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
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#ifdef TOOLS_ENABLED
#include "navigation_mesh_editor_plugin.h"

#include "core/io/marshalls.h"
#include "core/io/resource_saver.h"
#include "navigation_mesh_generator.h"
#include "scene/3d/mesh_instance_3d.h"
#include "scene/gui/box_container.h"

void NavigationMeshEditor::_node_removed(Node *p_node) {
	if (p_node == node) {
		node = nullptr;

		hide();
	}
}

void NavigationMeshEditor::_notification(int p_option) {
	if (p_option == NOTIFICATION_ENTER_TREE) {
		button_bake->set_icon(get_theme_icon(SNAME("Bake"), SNAME("EditorIcons")));
		button_reset->set_icon(get_theme_icon(SNAME("Reload"), SNAME("EditorIcons")));
	}
}

void NavigationMeshEditor::_bake_pressed() {
	button_bake->set_pressed(false);

	ERR_FAIL_COND(!node);
	if (!node->get_navigation_mesh().is_valid()) {
		err_dialog->set_text(TTR("A NavigationMesh resource must be set or created for this node to work."));
		err_dialog->popup_centered();
		return;
	}

	NavigationMeshGenerator::get_singleton()->clear(node->get_navigation_mesh());
	NavigationMeshGenerator::get_singleton()->bake(node->get_navigation_mesh(), node);

	node->update_gizmo();
}

void NavigationMeshEditor::_clear_pressed() {
	if (node) {
		NavigationMeshGenerator::get_singleton()->clear(node->get_navigation_mesh());
	}

	button_bake->set_pressed(false);
	bake_info->set_text("");

	if (node) {
		node->update_gizmo();
	}
}

void NavigationMeshEditor::edit(NavigationRegion3D *p_nav_region) {
	if (p_nav_region == nullptr || node == p_nav_region) {
		return;
	}

	node = p_nav_region;
}

void NavigationMeshEditor::_bind_methods() {
}

NavigationMeshEditor::NavigationMeshEditor() {
	bake_hbox = memnew(HBoxContainer);

	button_bake = memnew(Button);
	button_bake->set_flat(true);
	bake_hbox->add_child(button_bake);
	button_bake->set_toggle_mode(true);
	button_bake->set_text(TTR("Bake NavMesh"));
	button_bake->connect("pressed", callable_mp(this, &NavigationMeshEditor::_bake_pressed));

	button_reset = memnew(Button);
	button_reset->set_flat(true);
	bake_hbox->add_child(button_reset);
	// No button text, we only use a revert icon which is set when entering the tree.
	button_reset->set_tooltip(TTR("Clear the navigation mesh."));
	button_reset->connect("pressed", callable_mp(this, &NavigationMeshEditor::_clear_pressed));

	bake_info = memnew(Label);
	bake_hbox->add_child(bake_info);

	err_dialog = memnew(AcceptDialog);
	add_child(err_dialog);
	node = nullptr;
}

NavigationMeshEditor::~NavigationMeshEditor() {
}

void NavigationMeshEditorPlugin::edit(Object *p_object) {
	navigation_mesh_editor->edit(Object::cast_to<NavigationRegion3D>(p_object));
}

bool NavigationMeshEditorPlugin::handles(Object *p_object) const {
	return p_object->is_class("NavigationRegion3D");
}

void NavigationMeshEditorPlugin::make_visible(bool p_visible) {
	if (p_visible) {
		navigation_mesh_editor->show();
		navigation_mesh_editor->bake_hbox->show();
	} else {
		navigation_mesh_editor->hide();
		navigation_mesh_editor->bake_hbox->hide();
		navigation_mesh_editor->edit(nullptr);
	}
}

NavigationMeshEditorPlugin::NavigationMeshEditorPlugin(EditorNode *p_node) {
	editor = p_node;
	navigation_mesh_editor = memnew(NavigationMeshEditor);
	editor->get_main_control()->add_child(navigation_mesh_editor);
	add_control_to_container(CONTAINER_SPATIAL_EDITOR_MENU, navigation_mesh_editor->bake_hbox);
	navigation_mesh_editor->hide();
	navigation_mesh_editor->bake_hbox->hide();
}

NavigationMeshEditorPlugin::~NavigationMeshEditorPlugin() {
}

#endif