initial commit, 4.5 stable

scene/2d/physics/joints/SCsub

@@ -0,0 +1,6 @@
+#!/usr/bin/env python
+from misc.utility.scons_hints import *
+
+Import("env")
+
+env.add_source_files(env.scene_sources, "*.cpp")

scene/2d/physics/joints/damped_spring_joint_2d.cpp

@@ -0,0 +1,128 @@
+/**************************************************************************/
+/*  damped_spring_joint_2d.cpp                                            */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* 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 "damped_spring_joint_2d.h"
+
+#include "scene/2d/physics/physics_body_2d.h"
+
+void DampedSpringJoint2D::_notification(int p_what) {
+	switch (p_what) {
+		case NOTIFICATION_DRAW: {
+			if (!is_inside_tree()) {
+				break;
+			}
+
+			if (!Engine::get_singleton()->is_editor_hint() && !get_tree()->is_debugging_collisions_hint()) {
+				break;
+			}
+
+			draw_line(Point2(-10, 0), Point2(+10, 0), Color(0.7, 0.6, 0.0, 0.5), 3);
+			draw_line(Point2(-10, length), Point2(+10, length), Color(0.7, 0.6, 0.0, 0.5), 3);
+			draw_line(Point2(0, 0), Point2(0, length), Color(0.7, 0.6, 0.0, 0.5), 3);
+		} break;
+	}
+}
+
+void DampedSpringJoint2D::_configure_joint(RID p_joint, PhysicsBody2D *body_a, PhysicsBody2D *body_b) {
+	Transform2D gt = get_global_transform();
+	Vector2 anchor_A = gt.get_origin();
+	Vector2 anchor_B = gt.xform(Vector2(0, length));
+
+	PhysicsServer2D::get_singleton()->joint_make_damped_spring(p_joint, anchor_A, anchor_B, body_a->get_rid(), body_b->get_rid());
+	if (rest_length) {
+		PhysicsServer2D::get_singleton()->damped_spring_joint_set_param(p_joint, PhysicsServer2D::DAMPED_SPRING_REST_LENGTH, rest_length);
+	}
+	PhysicsServer2D::get_singleton()->damped_spring_joint_set_param(p_joint, PhysicsServer2D::DAMPED_SPRING_STIFFNESS, stiffness);
+	PhysicsServer2D::get_singleton()->damped_spring_joint_set_param(p_joint, PhysicsServer2D::DAMPED_SPRING_DAMPING, damping);
+}
+
+void DampedSpringJoint2D::set_length(real_t p_length) {
+	length = p_length;
+	queue_redraw();
+}
+
+real_t DampedSpringJoint2D::get_length() const {
+	return length;
+}
+
+void DampedSpringJoint2D::set_rest_length(real_t p_rest_length) {
+	rest_length = p_rest_length;
+	queue_redraw();
+	if (is_configured()) {
+		PhysicsServer2D::get_singleton()->damped_spring_joint_set_param(get_rid(), PhysicsServer2D::DAMPED_SPRING_REST_LENGTH, p_rest_length ? p_rest_length : length);
+	}
+}
+
+real_t DampedSpringJoint2D::get_rest_length() const {
+	return rest_length;
+}
+
+void DampedSpringJoint2D::set_stiffness(real_t p_stiffness) {
+	stiffness = p_stiffness;
+	queue_redraw();
+	if (is_configured()) {
+		PhysicsServer2D::get_singleton()->damped_spring_joint_set_param(get_rid(), PhysicsServer2D::DAMPED_SPRING_STIFFNESS, p_stiffness);
+	}
+}
+
+real_t DampedSpringJoint2D::get_stiffness() const {
+	return stiffness;
+}
+
+void DampedSpringJoint2D::set_damping(real_t p_damping) {
+	damping = p_damping;
+	queue_redraw();
+	if (is_configured()) {
+		PhysicsServer2D::get_singleton()->damped_spring_joint_set_param(get_rid(), PhysicsServer2D::DAMPED_SPRING_DAMPING, p_damping);
+	}
+}
+
+real_t DampedSpringJoint2D::get_damping() const {
+	return damping;
+}
+
+void DampedSpringJoint2D::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("set_length", "length"), &DampedSpringJoint2D::set_length);
+	ClassDB::bind_method(D_METHOD("get_length"), &DampedSpringJoint2D::get_length);
+	ClassDB::bind_method(D_METHOD("set_rest_length", "rest_length"), &DampedSpringJoint2D::set_rest_length);
+	ClassDB::bind_method(D_METHOD("get_rest_length"), &DampedSpringJoint2D::get_rest_length);
+	ClassDB::bind_method(D_METHOD("set_stiffness", "stiffness"), &DampedSpringJoint2D::set_stiffness);
+	ClassDB::bind_method(D_METHOD("get_stiffness"), &DampedSpringJoint2D::get_stiffness);
+	ClassDB::bind_method(D_METHOD("set_damping", "damping"), &DampedSpringJoint2D::set_damping);
+	ClassDB::bind_method(D_METHOD("get_damping"), &DampedSpringJoint2D::get_damping);
+
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "length", PROPERTY_HINT_RANGE, "1,65535,1,exp,suffix:px"), "set_length", "get_length");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "rest_length", PROPERTY_HINT_RANGE, "0,65535,1,exp,suffix:px"), "set_rest_length", "get_rest_length");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "stiffness", PROPERTY_HINT_RANGE, "0.1,64,0.1,exp"), "set_stiffness", "get_stiffness");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "damping", PROPERTY_HINT_RANGE, "0.01,16,0.01,exp"), "set_damping", "get_damping");
+}
+
+DampedSpringJoint2D::DampedSpringJoint2D() {
+}

scene/2d/physics/joints/damped_spring_joint_2d.h

@@ -0,0 +1,64 @@
+/**************************************************************************/
+/*  damped_spring_joint_2d.h                                              */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* 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.                 */
+/**************************************************************************/
+
+#pragma once
+
+#include "scene/2d/physics/joints/joint_2d.h"
+
+class PhysicsBody2D;
+
+class DampedSpringJoint2D : public Joint2D {
+	GDCLASS(DampedSpringJoint2D, Joint2D);
+
+	real_t stiffness = 20.0;
+	real_t damping = 1.0;
+	real_t rest_length = 0.0;
+	real_t length = 50.0;
+
+protected:
+	void _notification(int p_what);
+	virtual void _configure_joint(RID p_joint, PhysicsBody2D *body_a, PhysicsBody2D *body_b) override;
+	static void _bind_methods();
+
+public:
+	void set_length(real_t p_length);
+	real_t get_length() const;
+
+	void set_rest_length(real_t p_rest_length);
+	real_t get_rest_length() const;
+
+	void set_damping(real_t p_damping);
+	real_t get_damping() const;
+
+	void set_stiffness(real_t p_stiffness);
+	real_t get_stiffness() const;
+
+	DampedSpringJoint2D();
+};

scene/2d/physics/joints/groove_joint_2d.cpp

@@ -0,0 +1,92 @@
+/**************************************************************************/
+/*  groove_joint_2d.cpp                                                   */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* 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 "groove_joint_2d.h"
+
+#include "scene/2d/physics/physics_body_2d.h"
+
+void GrooveJoint2D::_notification(int p_what) {
+	switch (p_what) {
+		case NOTIFICATION_DRAW: {
+			if (!is_inside_tree()) {
+				break;
+			}
+
+			if (!Engine::get_singleton()->is_editor_hint() && !get_tree()->is_debugging_collisions_hint()) {
+				break;
+			}
+
+			draw_line(Point2(-10, 0), Point2(+10, 0), Color(0.7, 0.6, 0.0, 0.5), 3);
+			draw_line(Point2(-10, length), Point2(+10, length), Color(0.7, 0.6, 0.0, 0.5), 3);
+			draw_line(Point2(0, 0), Point2(0, length), Color(0.7, 0.6, 0.0, 0.5), 3);
+			draw_line(Point2(-10, initial_offset), Point2(+10, initial_offset), Color(0.8, 0.8, 0.9, 0.5), 5);
+		} break;
+	}
+}
+
+void GrooveJoint2D::_configure_joint(RID p_joint, PhysicsBody2D *body_a, PhysicsBody2D *body_b) {
+	Transform2D gt = get_global_transform();
+	Vector2 groove_A1 = gt.get_origin();
+	Vector2 groove_A2 = gt.xform(Vector2(0, length));
+	Vector2 anchor_B = gt.xform(Vector2(0, initial_offset));
+
+	PhysicsServer2D::get_singleton()->joint_make_groove(p_joint, groove_A1, groove_A2, anchor_B, body_a->get_rid(), body_b->get_rid());
+}
+
+void GrooveJoint2D::set_length(real_t p_length) {
+	length = p_length;
+	queue_redraw();
+}
+
+real_t GrooveJoint2D::get_length() const {
+	return length;
+}
+
+void GrooveJoint2D::set_initial_offset(real_t p_initial_offset) {
+	initial_offset = p_initial_offset;
+	queue_redraw();
+}
+
+real_t GrooveJoint2D::get_initial_offset() const {
+	return initial_offset;
+}
+
+void GrooveJoint2D::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("set_length", "length"), &GrooveJoint2D::set_length);
+	ClassDB::bind_method(D_METHOD("get_length"), &GrooveJoint2D::get_length);
+	ClassDB::bind_method(D_METHOD("set_initial_offset", "offset"), &GrooveJoint2D::set_initial_offset);
+	ClassDB::bind_method(D_METHOD("get_initial_offset"), &GrooveJoint2D::get_initial_offset);
+
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "length", PROPERTY_HINT_RANGE, "1,65535,1,exp,suffix:px"), "set_length", "get_length");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "initial_offset", PROPERTY_HINT_RANGE, "1,65535,1,exp,suffix:px"), "set_initial_offset", "get_initial_offset");
+}
+
+GrooveJoint2D::GrooveJoint2D() {
+}

scene/2d/physics/joints/groove_joint_2d.h

@@ -0,0 +1,56 @@
+/**************************************************************************/
+/*  groove_joint_2d.h                                                     */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* 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.                 */
+/**************************************************************************/
+
+#pragma once
+
+#include "scene/2d/physics/joints/joint_2d.h"
+
+class PhysicsBody2D;
+
+class GrooveJoint2D : public Joint2D {
+	GDCLASS(GrooveJoint2D, Joint2D);
+
+	real_t length = 50.0;
+	real_t initial_offset = 25.0;
+
+protected:
+	void _notification(int p_what);
+	virtual void _configure_joint(RID p_joint, PhysicsBody2D *body_a, PhysicsBody2D *body_b) override;
+	static void _bind_methods();
+
+public:
+	void set_length(real_t p_length);
+	real_t get_length() const;
+
+	void set_initial_offset(real_t p_initial_offset);
+	real_t get_initial_offset() const;
+
+	GrooveJoint2D();
+};

scene/2d/physics/joints/joint_2d.cpp

@@ -0,0 +1,257 @@
+/**************************************************************************/
+/*  joint_2d.cpp                                                          */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* 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 "joint_2d.h"
+
+#include "scene/2d/physics/physics_body_2d.h"
+
+void Joint2D::_disconnect_signals() {
+	Node *node_a = get_node_or_null(a);
+	PhysicsBody2D *body_a = Object::cast_to<PhysicsBody2D>(node_a);
+	if (body_a) {
+		body_a->disconnect(SceneStringName(tree_exiting), callable_mp(this, &Joint2D::_body_exit_tree));
+	}
+
+	Node *node_b = get_node_or_null(b);
+	PhysicsBody2D *body_b = Object::cast_to<PhysicsBody2D>(node_b);
+	if (body_b) {
+		body_b->disconnect(SceneStringName(tree_exiting), callable_mp(this, &Joint2D::_body_exit_tree));
+	}
+}
+
+void Joint2D::_body_exit_tree() {
+	_disconnect_signals();
+	_update_joint(true);
+	update_configuration_warnings();
+}
+
+void Joint2D::_update_joint(bool p_only_free) {
+	if (ba.is_valid() && bb.is_valid() && exclude_from_collision) {
+		PhysicsServer2D::get_singleton()->joint_disable_collisions_between_bodies(joint, false);
+	}
+
+	ba = RID();
+	bb = RID();
+	configured = false;
+
+	if (p_only_free || !is_inside_tree()) {
+		PhysicsServer2D::get_singleton()->joint_clear(joint);
+		warning = String();
+		return;
+	}
+
+	Node *node_a = get_node_or_null(a);
+	Node *node_b = get_node_or_null(b);
+
+	PhysicsBody2D *body_a = Object::cast_to<PhysicsBody2D>(node_a);
+	PhysicsBody2D *body_b = Object::cast_to<PhysicsBody2D>(node_b);
+
+	bool valid = false;
+
+	if (node_a && !body_a && node_b && !body_b) {
+		warning = RTR("Node A and Node B must be PhysicsBody2Ds");
+	} else if (node_a && !body_a) {
+		warning = RTR("Node A must be a PhysicsBody2D");
+	} else if (node_b && !body_b) {
+		warning = RTR("Node B must be a PhysicsBody2D");
+	} else if (!body_a || !body_b) {
+		warning = RTR("Joint is not connected to two PhysicsBody2Ds");
+	} else if (body_a == body_b) {
+		warning = RTR("Node A and Node B must be different PhysicsBody2Ds");
+	} else {
+		warning = String();
+		valid = true;
+	}
+
+	update_configuration_warnings();
+
+	if (!valid) {
+		PhysicsServer2D::get_singleton()->joint_clear(joint);
+		return;
+	}
+
+	if (body_a) {
+		body_a->force_update_transform();
+	}
+
+	if (body_b) {
+		body_b->force_update_transform();
+	}
+
+	configured = true;
+
+	_configure_joint(joint, body_a, body_b);
+
+	ERR_FAIL_COND_MSG(!joint.is_valid(), "Failed to configure the joint.");
+
+	PhysicsServer2D::get_singleton()->joint_set_param(joint, PhysicsServer2D::JOINT_PARAM_BIAS, bias);
+
+	ba = body_a->get_rid();
+	bb = body_b->get_rid();
+
+	if (!body_a->is_connected(SceneStringName(tree_exiting), callable_mp(this, &Joint2D::_body_exit_tree))) {
+		body_a->connect(SceneStringName(tree_exiting), callable_mp(this, &Joint2D::_body_exit_tree));
+	}
+	if (!body_b->is_connected(SceneStringName(tree_exiting), callable_mp(this, &Joint2D::_body_exit_tree))) {
+		body_b->connect(SceneStringName(tree_exiting), callable_mp(this, &Joint2D::_body_exit_tree));
+	}
+
+	PhysicsServer2D::get_singleton()->joint_disable_collisions_between_bodies(joint, exclude_from_collision);
+}
+
+void Joint2D::set_node_a(const NodePath &p_node_a) {
+	if (a == p_node_a) {
+		return;
+	}
+
+	if (is_configured()) {
+		_disconnect_signals();
+	}
+
+	a = p_node_a;
+	if (Engine::get_singleton()->is_editor_hint()) {
+		// When in editor, the setter may be called as a result of node rename.
+		// It happens before the node actually changes its name, which triggers false warning.
+		callable_mp(this, &Joint2D::_update_joint).call_deferred(false);
+	} else {
+		_update_joint();
+	}
+}
+
+NodePath Joint2D::get_node_a() const {
+	return a;
+}
+
+void Joint2D::set_node_b(const NodePath &p_node_b) {
+	if (b == p_node_b) {
+		return;
+	}
+
+	if (is_configured()) {
+		_disconnect_signals();
+	}
+
+	b = p_node_b;
+	if (Engine::get_singleton()->is_editor_hint()) {
+		callable_mp(this, &Joint2D::_update_joint).call_deferred(false);
+	} else {
+		_update_joint();
+	}
+}
+
+NodePath Joint2D::get_node_b() const {
+	return b;
+}
+
+void Joint2D::_notification(int p_what) {
+	switch (p_what) {
+		case NOTIFICATION_POST_ENTER_TREE: {
+			if (is_configured()) {
+				_disconnect_signals();
+			}
+			_update_joint();
+		} break;
+
+		case NOTIFICATION_EXIT_TREE: {
+			if (is_configured()) {
+				_disconnect_signals();
+			}
+			_update_joint(true);
+		} break;
+	}
+}
+
+void Joint2D::set_bias(real_t p_bias) {
+	bias = p_bias;
+	if (joint.is_valid()) {
+		PhysicsServer2D::get_singleton()->joint_set_param(joint, PhysicsServer2D::JOINT_PARAM_BIAS, bias);
+	}
+}
+
+real_t Joint2D::get_bias() const {
+	return bias;
+}
+
+void Joint2D::set_exclude_nodes_from_collision(bool p_enable) {
+	if (exclude_from_collision == p_enable) {
+		return;
+	}
+	if (is_configured()) {
+		_disconnect_signals();
+	}
+	_update_joint(true);
+	exclude_from_collision = p_enable;
+	_update_joint();
+}
+
+bool Joint2D::get_exclude_nodes_from_collision() const {
+	return exclude_from_collision;
+}
+
+PackedStringArray Joint2D::get_configuration_warnings() const {
+	PackedStringArray warnings = Node2D::get_configuration_warnings();
+
+	if (!warning.is_empty()) {
+		warnings.push_back(warning);
+	}
+
+	return warnings;
+}
+
+void Joint2D::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("set_node_a", "node"), &Joint2D::set_node_a);
+	ClassDB::bind_method(D_METHOD("get_node_a"), &Joint2D::get_node_a);
+
+	ClassDB::bind_method(D_METHOD("set_node_b", "node"), &Joint2D::set_node_b);
+	ClassDB::bind_method(D_METHOD("get_node_b"), &Joint2D::get_node_b);
+
+	ClassDB::bind_method(D_METHOD("set_bias", "bias"), &Joint2D::set_bias);
+	ClassDB::bind_method(D_METHOD("get_bias"), &Joint2D::get_bias);
+
+	ClassDB::bind_method(D_METHOD("set_exclude_nodes_from_collision", "enable"), &Joint2D::set_exclude_nodes_from_collision);
+	ClassDB::bind_method(D_METHOD("get_exclude_nodes_from_collision"), &Joint2D::get_exclude_nodes_from_collision);
+
+	ClassDB::bind_method(D_METHOD("get_rid"), &Joint2D::get_rid);
+
+	ADD_PROPERTY(PropertyInfo(Variant::NODE_PATH, "node_a", PROPERTY_HINT_NODE_PATH_VALID_TYPES, "PhysicsBody2D"), "set_node_a", "get_node_a");
+	ADD_PROPERTY(PropertyInfo(Variant::NODE_PATH, "node_b", PROPERTY_HINT_NODE_PATH_VALID_TYPES, "PhysicsBody2D"), "set_node_b", "get_node_b");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "bias", PROPERTY_HINT_RANGE, "0,0.9,0.001"), "set_bias", "get_bias");
+	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "disable_collision"), "set_exclude_nodes_from_collision", "get_exclude_nodes_from_collision");
+}
+
+Joint2D::Joint2D() {
+	joint = PhysicsServer2D::get_singleton()->joint_create();
+	set_hide_clip_children(true);
+}
+
+Joint2D::~Joint2D() {
+	ERR_FAIL_NULL(PhysicsServer2D::get_singleton());
+	PhysicsServer2D::get_singleton()->free(joint);
+}

scene/2d/physics/joints/joint_2d.h

@@ -0,0 +1,81 @@
+/**************************************************************************/
+/*  joint_2d.h                                                            */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* 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.                 */
+/**************************************************************************/
+
+#pragma once
+
+#include "scene/2d/node_2d.h"
+
+class PhysicsBody2D;
+
+class Joint2D : public Node2D {
+	GDCLASS(Joint2D, Node2D);
+
+	RID joint;
+	RID ba, bb;
+
+	NodePath a;
+	NodePath b;
+	real_t bias = 0.0;
+
+	bool exclude_from_collision = true;
+	bool configured = false;
+	String warning;
+
+protected:
+	void _disconnect_signals();
+	void _body_exit_tree();
+	void _update_joint(bool p_only_free = false);
+
+	void _notification(int p_what);
+	virtual void _configure_joint(RID p_joint, PhysicsBody2D *body_a, PhysicsBody2D *body_b) = 0;
+
+	static void _bind_methods();
+
+	_FORCE_INLINE_ bool is_configured() const { return configured; }
+
+public:
+	virtual PackedStringArray get_configuration_warnings() const override;
+
+	void set_node_a(const NodePath &p_node_a);
+	NodePath get_node_a() const;
+
+	void set_node_b(const NodePath &p_node_b);
+	NodePath get_node_b() const;
+
+	void set_bias(real_t p_bias);
+	real_t get_bias() const;
+
+	void set_exclude_nodes_from_collision(bool p_enable);
+	bool get_exclude_nodes_from_collision() const;
+
+	RID get_rid() const { return joint; }
+	Joint2D();
+	~Joint2D();
+};

scene/2d/physics/joints/pin_joint_2d.cpp

@@ -0,0 +1,177 @@
+/**************************************************************************/
+/*  pin_joint_2d.cpp                                                      */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* 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 "pin_joint_2d.h"
+
+#include "scene/2d/physics/physics_body_2d.h"
+
+void PinJoint2D::_notification(int p_what) {
+	switch (p_what) {
+		case NOTIFICATION_DRAW: {
+			if (!is_inside_tree()) {
+				break;
+			}
+
+			if (!Engine::get_singleton()->is_editor_hint() && !get_tree()->is_debugging_collisions_hint()) {
+				break;
+			}
+
+			draw_line(Point2(-10, 0), Point2(+10, 0), Color(0.7, 0.6, 0.0, 0.5), 3);
+			draw_line(Point2(0, -10), Point2(0, +10), Color(0.7, 0.6, 0.0, 0.5), 3);
+		} break;
+	}
+}
+
+void PinJoint2D::_configure_joint(RID p_joint, PhysicsBody2D *body_a, PhysicsBody2D *body_b) {
+	PhysicsServer2D::get_singleton()->joint_make_pin(p_joint, get_global_position(), body_a->get_rid(), body_b ? body_b->get_rid() : RID());
+	PhysicsServer2D::get_singleton()->pin_joint_set_param(p_joint, PhysicsServer2D::PIN_JOINT_SOFTNESS, softness);
+	PhysicsServer2D::get_singleton()->pin_joint_set_param(p_joint, PhysicsServer2D::PIN_JOINT_LIMIT_UPPER, angular_limit_upper);
+	PhysicsServer2D::get_singleton()->pin_joint_set_param(p_joint, PhysicsServer2D::PIN_JOINT_LIMIT_LOWER, angular_limit_lower);
+	PhysicsServer2D::get_singleton()->pin_joint_set_param(p_joint, PhysicsServer2D::PIN_JOINT_MOTOR_TARGET_VELOCITY, motor_target_velocity);
+	PhysicsServer2D::get_singleton()->pin_joint_set_flag(p_joint, PhysicsServer2D::PIN_JOINT_FLAG_MOTOR_ENABLED, motor_enabled);
+	PhysicsServer2D::get_singleton()->pin_joint_set_flag(p_joint, PhysicsServer2D::PIN_JOINT_FLAG_ANGULAR_LIMIT_ENABLED, angular_limit_enabled);
+}
+
+void PinJoint2D::set_softness(real_t p_softness) {
+	if (softness == p_softness) {
+		return;
+	}
+	softness = p_softness;
+	queue_redraw();
+	if (is_configured()) {
+		PhysicsServer2D::get_singleton()->pin_joint_set_param(get_rid(), PhysicsServer2D::PIN_JOINT_SOFTNESS, p_softness);
+	}
+}
+
+real_t PinJoint2D::get_softness() const {
+	return softness;
+}
+
+void PinJoint2D::set_angular_limit_lower(real_t p_angular_limit_lower) {
+	if (angular_limit_lower == p_angular_limit_lower) {
+		return;
+	}
+	angular_limit_lower = p_angular_limit_lower;
+	queue_redraw();
+	if (is_configured()) {
+		PhysicsServer2D::get_singleton()->pin_joint_set_param(get_rid(), PhysicsServer2D::PIN_JOINT_LIMIT_LOWER, p_angular_limit_lower);
+	}
+}
+
+real_t PinJoint2D::get_angular_limit_lower() const {
+	return angular_limit_lower;
+}
+
+void PinJoint2D::set_angular_limit_upper(real_t p_angular_limit_upper) {
+	if (angular_limit_upper == p_angular_limit_upper) {
+		return;
+	}
+	angular_limit_upper = p_angular_limit_upper;
+	queue_redraw();
+	if (is_configured()) {
+		PhysicsServer2D::get_singleton()->pin_joint_set_param(get_rid(), PhysicsServer2D::PIN_JOINT_LIMIT_UPPER, p_angular_limit_upper);
+	}
+}
+
+real_t PinJoint2D::get_angular_limit_upper() const {
+	return angular_limit_upper;
+}
+
+void PinJoint2D::set_motor_target_velocity(real_t p_motor_target_velocity) {
+	if (motor_target_velocity == p_motor_target_velocity) {
+		return;
+	}
+	motor_target_velocity = p_motor_target_velocity;
+	queue_redraw();
+	if (is_configured()) {
+		PhysicsServer2D::get_singleton()->pin_joint_set_param(get_rid(), PhysicsServer2D::PIN_JOINT_MOTOR_TARGET_VELOCITY, motor_target_velocity);
+	}
+}
+
+real_t PinJoint2D::get_motor_target_velocity() const {
+	return motor_target_velocity;
+}
+
+void PinJoint2D::set_motor_enabled(bool p_motor_enabled) {
+	if (motor_enabled == p_motor_enabled) {
+		return;
+	}
+	motor_enabled = p_motor_enabled;
+	queue_redraw();
+	if (is_configured()) {
+		PhysicsServer2D::get_singleton()->pin_joint_set_flag(get_rid(), PhysicsServer2D::PIN_JOINT_FLAG_MOTOR_ENABLED, motor_enabled);
+	}
+}
+
+bool PinJoint2D::is_motor_enabled() const {
+	return motor_enabled;
+}
+
+void PinJoint2D::set_angular_limit_enabled(bool p_angular_limit_enabled) {
+	if (angular_limit_enabled == p_angular_limit_enabled) {
+		return;
+	}
+	angular_limit_enabled = p_angular_limit_enabled;
+	queue_redraw();
+	if (is_configured()) {
+		PhysicsServer2D::get_singleton()->pin_joint_set_flag(get_rid(), PhysicsServer2D::PIN_JOINT_FLAG_ANGULAR_LIMIT_ENABLED, angular_limit_enabled);
+	}
+}
+
+bool PinJoint2D::is_angular_limit_enabled() const {
+	return angular_limit_enabled;
+}
+
+void PinJoint2D::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("set_softness", "softness"), &PinJoint2D::set_softness);
+	ClassDB::bind_method(D_METHOD("get_softness"), &PinJoint2D::get_softness);
+	ClassDB::bind_method(D_METHOD("set_angular_limit_lower", "angular_limit_lower"), &PinJoint2D::set_angular_limit_lower);
+	ClassDB::bind_method(D_METHOD("get_angular_limit_lower"), &PinJoint2D::get_angular_limit_lower);
+	ClassDB::bind_method(D_METHOD("set_angular_limit_upper", "angular_limit_upper"), &PinJoint2D::set_angular_limit_upper);
+	ClassDB::bind_method(D_METHOD("get_angular_limit_upper"), &PinJoint2D::get_angular_limit_upper);
+	ClassDB::bind_method(D_METHOD("set_motor_target_velocity", "motor_target_velocity"), &PinJoint2D::set_motor_target_velocity);
+	ClassDB::bind_method(D_METHOD("get_motor_target_velocity"), &PinJoint2D::get_motor_target_velocity);
+	ClassDB::bind_method(D_METHOD("set_motor_enabled", "enabled"), &PinJoint2D::set_motor_enabled);
+	ClassDB::bind_method(D_METHOD("is_motor_enabled"), &PinJoint2D::is_motor_enabled);
+	ClassDB::bind_method(D_METHOD("set_angular_limit_enabled", "enabled"), &PinJoint2D::set_angular_limit_enabled);
+	ClassDB::bind_method(D_METHOD("is_angular_limit_enabled"), &PinJoint2D::is_angular_limit_enabled);
+
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "softness", PROPERTY_HINT_RANGE, "0.00,16,0.01,exp"), "set_softness", "get_softness");
+	ADD_GROUP("Angular Limit", "angular_limit_");
+	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "angular_limit_enabled"), "set_angular_limit_enabled", "is_angular_limit_enabled");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "angular_limit_lower", PROPERTY_HINT_RANGE, "-180,180,0.1,radians_as_degrees"), "set_angular_limit_lower", "get_angular_limit_lower");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "angular_limit_upper", PROPERTY_HINT_RANGE, "-180,180,0.1,radians_as_degrees"), "set_angular_limit_upper", "get_angular_limit_upper");
+	ADD_GROUP("Motor", "motor_");
+	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "motor_enabled"), "set_motor_enabled", "is_motor_enabled");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "motor_target_velocity", PROPERTY_HINT_RANGE, U"-200,200,0.01,or_greater,or_less,radians_as_degrees,suffix:\u00B0/s"), "set_motor_target_velocity", "get_motor_target_velocity");
+}
+
+PinJoint2D::PinJoint2D() {
+}

scene/2d/physics/joints/pin_joint_2d.h

@@ -0,0 +1,68 @@
+/**************************************************************************/
+/*  pin_joint_2d.h                                                        */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* 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.                 */
+/**************************************************************************/
+
+#pragma once
+
+#include "scene/2d/physics/joints/joint_2d.h"
+
+class PhysicsBody2D;
+
+class PinJoint2D : public Joint2D {
+	GDCLASS(PinJoint2D, Joint2D);
+
+	real_t softness = 0.0;
+	real_t angular_limit_lower = 0.0;
+	real_t angular_limit_upper = 0.0;
+	real_t motor_target_velocity = 0.0;
+	bool motor_enabled = false;
+	bool angular_limit_enabled = false;
+
+protected:
+	void _notification(int p_what);
+	virtual void _configure_joint(RID p_joint, PhysicsBody2D *body_a, PhysicsBody2D *body_b) override;
+	static void _bind_methods();
+
+public:
+	void set_softness(real_t p_softness);
+	real_t get_softness() const;
+	void set_angular_limit_lower(real_t p_angular_limit_lower);
+	real_t get_angular_limit_lower() const;
+	void set_angular_limit_upper(real_t p_angular_limit_upper);
+	real_t get_angular_limit_upper() const;
+	void set_motor_target_velocity(real_t p_motor_target_velocity);
+	real_t get_motor_target_velocity() const;
+
+	void set_motor_enabled(bool p_motor_enabled);
+	bool is_motor_enabled() const;
+	void set_angular_limit_enabled(bool p_angular_limit_enabled);
+	bool is_angular_limit_enabled() const;
+
+	PinJoint2D();
+};