128 lines
6 KiB
C++
128 lines
6 KiB
C++
/**************************************************************************/
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/* damped_spring_joint_2d.cpp */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#include "damped_spring_joint_2d.h"
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#include "scene/2d/physics/physics_body_2d.h"
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void DampedSpringJoint2D::_notification(int p_what) {
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switch (p_what) {
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case NOTIFICATION_DRAW: {
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if (!is_inside_tree()) {
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break;
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}
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if (!Engine::get_singleton()->is_editor_hint() && !get_tree()->is_debugging_collisions_hint()) {
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break;
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}
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draw_line(Point2(-10, 0), Point2(+10, 0), Color(0.7, 0.6, 0.0, 0.5), 3);
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draw_line(Point2(-10, length), Point2(+10, length), Color(0.7, 0.6, 0.0, 0.5), 3);
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draw_line(Point2(0, 0), Point2(0, length), Color(0.7, 0.6, 0.0, 0.5), 3);
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} break;
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}
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}
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void DampedSpringJoint2D::_configure_joint(RID p_joint, PhysicsBody2D *body_a, PhysicsBody2D *body_b) {
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Transform2D gt = get_global_transform();
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Vector2 anchor_A = gt.get_origin();
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Vector2 anchor_B = gt.xform(Vector2(0, length));
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PhysicsServer2D::get_singleton()->joint_make_damped_spring(p_joint, anchor_A, anchor_B, body_a->get_rid(), body_b->get_rid());
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if (rest_length) {
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PhysicsServer2D::get_singleton()->damped_spring_joint_set_param(p_joint, PhysicsServer2D::DAMPED_SPRING_REST_LENGTH, rest_length);
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}
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PhysicsServer2D::get_singleton()->damped_spring_joint_set_param(p_joint, PhysicsServer2D::DAMPED_SPRING_STIFFNESS, stiffness);
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PhysicsServer2D::get_singleton()->damped_spring_joint_set_param(p_joint, PhysicsServer2D::DAMPED_SPRING_DAMPING, damping);
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}
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void DampedSpringJoint2D::set_length(real_t p_length) {
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length = p_length;
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queue_redraw();
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}
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real_t DampedSpringJoint2D::get_length() const {
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return length;
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}
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void DampedSpringJoint2D::set_rest_length(real_t p_rest_length) {
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rest_length = p_rest_length;
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queue_redraw();
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if (is_configured()) {
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PhysicsServer2D::get_singleton()->damped_spring_joint_set_param(get_rid(), PhysicsServer2D::DAMPED_SPRING_REST_LENGTH, p_rest_length ? p_rest_length : length);
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}
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}
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real_t DampedSpringJoint2D::get_rest_length() const {
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return rest_length;
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}
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void DampedSpringJoint2D::set_stiffness(real_t p_stiffness) {
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stiffness = p_stiffness;
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queue_redraw();
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if (is_configured()) {
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PhysicsServer2D::get_singleton()->damped_spring_joint_set_param(get_rid(), PhysicsServer2D::DAMPED_SPRING_STIFFNESS, p_stiffness);
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}
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}
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real_t DampedSpringJoint2D::get_stiffness() const {
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return stiffness;
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}
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void DampedSpringJoint2D::set_damping(real_t p_damping) {
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damping = p_damping;
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queue_redraw();
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if (is_configured()) {
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PhysicsServer2D::get_singleton()->damped_spring_joint_set_param(get_rid(), PhysicsServer2D::DAMPED_SPRING_DAMPING, p_damping);
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}
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}
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real_t DampedSpringJoint2D::get_damping() const {
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return damping;
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}
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void DampedSpringJoint2D::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_length", "length"), &DampedSpringJoint2D::set_length);
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ClassDB::bind_method(D_METHOD("get_length"), &DampedSpringJoint2D::get_length);
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ClassDB::bind_method(D_METHOD("set_rest_length", "rest_length"), &DampedSpringJoint2D::set_rest_length);
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ClassDB::bind_method(D_METHOD("get_rest_length"), &DampedSpringJoint2D::get_rest_length);
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ClassDB::bind_method(D_METHOD("set_stiffness", "stiffness"), &DampedSpringJoint2D::set_stiffness);
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ClassDB::bind_method(D_METHOD("get_stiffness"), &DampedSpringJoint2D::get_stiffness);
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ClassDB::bind_method(D_METHOD("set_damping", "damping"), &DampedSpringJoint2D::set_damping);
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ClassDB::bind_method(D_METHOD("get_damping"), &DampedSpringJoint2D::get_damping);
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ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "length", PROPERTY_HINT_RANGE, "1,65535,1,exp,suffix:px"), "set_length", "get_length");
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ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "rest_length", PROPERTY_HINT_RANGE, "0,65535,1,exp,suffix:px"), "set_rest_length", "get_rest_length");
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ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "stiffness", PROPERTY_HINT_RANGE, "0.1,64,0.1,exp"), "set_stiffness", "get_stiffness");
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ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "damping", PROPERTY_HINT_RANGE, "0.01,16,0.01,exp"), "set_damping", "get_damping");
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}
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DampedSpringJoint2D::DampedSpringJoint2D() {
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}
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