diff options
Diffstat (limited to 'scene/2d/physics/joints/damped_spring_joint_2d.cpp')
| -rw-r--r-- | scene/2d/physics/joints/damped_spring_joint_2d.cpp | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/scene/2d/physics/joints/damped_spring_joint_2d.cpp b/scene/2d/physics/joints/damped_spring_joint_2d.cpp new file mode 100644 index 0000000000..4b210ec0c7 --- /dev/null +++ b/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() { +} |