Merge pull request #18699 from AndreaCatania/ik

Inverse kinematic

3 files changed, 177 insertions, 0 deletions

diff --git a/editor/editor_node.cpp b/editor/editor_node.cpp
index 212ee33ffa..15e40bfba1 100644
--- a/editor/editor_node.cpp
+++ b/editor/editor_node.cpp
@@ -109,6 +109,7 @@
 #include "editor/plugins/shader_graph_editor_plugin.h"
 #include "editor/plugins/skeleton_2d_editor_plugin.h"
 #include "editor/plugins/skeleton_editor_plugin.h"
+#include "editor/plugins/skeleton_ik_editor_plugin.h"
 #include "editor/plugins/spatial_editor_plugin.h"
 #include "editor/plugins/sprite_editor_plugin.h"
 #include "editor/plugins/sprite_frames_editor_plugin.h"
@@ -5596,6 +5597,7 @@ EditorNode::EditorNode() {
 	add_editor_plugin(memnew(AudioBusesEditorPlugin(audio_bus_editor)));
 	add_editor_plugin(memnew(AudioBusesEditorPlugin(audio_bus_editor)));
 	add_editor_plugin(memnew(SkeletonEditorPlugin(this)));
+	add_editor_plugin(memnew(SkeletonIKEditorPlugin(this)));
 	add_editor_plugin(memnew(PhysicalBonePlugin(this)));
 
 	// FIXME: Disabled as (according to reduz) users were complaining that it gets in the way
diff --git a/editor/plugins/skeleton_ik_editor_plugin.cpp b/editor/plugins/skeleton_ik_editor_plugin.cpp
new file mode 100644
index 0000000000..2d343d3edd
--- /dev/null
+++ b/editor/plugins/skeleton_ik_editor_plugin.cpp
@@ -0,0 +1,110 @@
+/*************************************************************************/
+/*  skeleton_ik_editor_plugin.cpp                                        */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 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  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "skeleton_ik_editor_plugin.h"
+
+#include "scene/animation/skeleton_ik.h"
+
+void SkeletonIKEditorPlugin::_play() {
+
+	if (!skeleton_ik)
+		return;
+
+	if (!skeleton_ik->get_parent_skeleton())
+		return;
+
+	if (play_btn->is_pressed()) {
+
+		initial_bone_poses.resize(skeleton_ik->get_parent_skeleton()->get_bone_count());
+		for (int i = 0; i < skeleton_ik->get_parent_skeleton()->get_bone_count(); ++i) {
+			initial_bone_poses.write[i] = skeleton_ik->get_parent_skeleton()->get_bone_pose(i);
+		}
+
+		skeleton_ik->start();
+	} else {
+		skeleton_ik->stop();
+
+		if (initial_bone_poses.size() != skeleton_ik->get_parent_skeleton()->get_bone_count())
+			return;
+
+		for (int i = 0; i < skeleton_ik->get_parent_skeleton()->get_bone_count(); ++i) {
+			skeleton_ik->get_parent_skeleton()->set_bone_pose(i, initial_bone_poses[i]);
+		}
+	}
+}
+
+void SkeletonIKEditorPlugin::edit(Object *p_object) {
+
+	if (p_object != skeleton_ik) {
+		if (skeleton_ik) {
+			play_btn->set_pressed(false);
+			_play();
+		}
+	}
+
+	SkeletonIK *s = Object::cast_to<SkeletonIK>(p_object);
+	if (!s)
+		return;
+
+	skeleton_ik = s;
+}
+
+bool SkeletonIKEditorPlugin::handles(Object *p_object) const {
+
+	return p_object->is_class("SkeletonIK");
+}
+
+void SkeletonIKEditorPlugin::make_visible(bool p_visible) {
+
+	if (p_visible)
+		play_btn->show();
+	else
+		play_btn->hide();
+}
+
+void SkeletonIKEditorPlugin::_bind_methods() {
+
+	ClassDB::bind_method("_play", &SkeletonIKEditorPlugin::_play);
+}
+
+SkeletonIKEditorPlugin::SkeletonIKEditorPlugin(EditorNode *p_node) {
+
+	editor = p_node;
+	play_btn = memnew(Button);
+	play_btn->set_icon(editor->get_gui_base()->get_icon("Play", "EditorIcons"));
+	play_btn->set_text(TTR("Play IK"));
+	play_btn->set_toggle_mode(true);
+	play_btn->hide();
+	play_btn->connect("pressed", this, "_play");
+	add_control_to_container(CONTAINER_SPATIAL_EDITOR_MENU, play_btn);
+	skeleton_ik = NULL;
+}
+
+SkeletonIKEditorPlugin::~SkeletonIKEditorPlugin() {}
diff --git a/editor/plugins/skeleton_ik_editor_plugin.h b/editor/plugins/skeleton_ik_editor_plugin.h
new file mode 100644
index 0000000000..e645bea39a
--- /dev/null
+++ b/editor/plugins/skeleton_ik_editor_plugin.h
@@ -0,0 +1,65 @@
+/*************************************************************************/
+/*  skeleton_ik_editor_plugin.h                                             */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 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  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef SKELETON_IK_EDITOR_PLUGIN_H
+#define SKELETON_IK_EDITOR_PLUGIN_H
+
+#include "editor/editor_node.h"
+#include "editor/editor_plugin.h"
+
+class SkeletonIK;
+
+class SkeletonIKEditorPlugin : public EditorPlugin {
+
+	GDCLASS(SkeletonIKEditorPlugin, EditorPlugin);
+
+	SkeletonIK *skeleton_ik;
+
+	Button *play_btn;
+	EditorNode *editor;
+	Vector<Transform> initial_bone_poses;
+
+	void _play();
+
+protected:
+	static void _bind_methods();
+
+public:
+	virtual String get_name() const { return "SkeletonIK"; }
+	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);
+
+	SkeletonIKEditorPlugin(EditorNode *p_node);
+	~SkeletonIKEditorPlugin();
+};
+
+#endif // SKELETON_IK_EDITOR_PLUGIN_H