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godot/scene/2d/joints_2d.cpp

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/*************************************************************************/
/* joints_2d.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 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 "joints_2d.h"
#include "core/engine.h"
#include "physics_body_2d.h"
#include "servers/physics_2d_server.h"
void Joint2D::_update_joint(bool p_only_free) {
if (joint.is_valid()) {
if (ba.is_valid() && bb.is_valid())
Physics2DServer::get_singleton()->body_remove_collision_exception(ba, bb);
Physics2DServer::get_singleton()->free(joint);
joint = RID();
ba = RID();
bb = RID();
}
if (p_only_free || !is_inside_tree())
return;
Node *node_a = has_node(get_node_a()) ? get_node(get_node_a()) : (Node *)NULL;
Node *node_b = has_node(get_node_b()) ? get_node(get_node_b()) : (Node *)NULL;
if (!node_a || !node_b)
return;
PhysicsBody2D *body_a = Object::cast_to<PhysicsBody2D>(node_a);
PhysicsBody2D *body_b = Object::cast_to<PhysicsBody2D>(node_b);
if (!body_a || !body_b)
return;
SWAP(body_a, body_b);
joint = _configure_joint(body_a, body_b);
if (!joint.is_valid())
return;
Physics2DServer::get_singleton()->get_singleton()->joint_set_param(joint, Physics2DServer::JOINT_PARAM_BIAS, bias);
ba = body_a->get_rid();
bb = body_b->get_rid();
Physics2DServer::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;
a = p_node_a;
_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;
b = p_node_b;
_update_joint();
}
NodePath Joint2D::get_node_b() const {
return b;
}
void Joint2D::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_READY: {
_update_joint();
} break;
case NOTIFICATION_EXIT_TREE: {
if (joint.is_valid()) {
_update_joint(true);
}
} break;
}
}
void Joint2D::set_bias(real_t p_bias) {
bias = p_bias;
if (joint.is_valid())
Physics2DServer::get_singleton()->get_singleton()->joint_set_param(joint, Physics2DServer::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;
exclude_from_collision = p_enable;
_update_joint();
}
bool Joint2D::get_exclude_nodes_from_collision() const {
return exclude_from_collision;
}
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);
ADD_PROPERTY(PropertyInfo(Variant::NODE_PATH, "node_a", PROPERTY_HINT_NODE_PATH_VALID_TYPES, "CollisionObject2D"), "set_node_a", "get_node_a");
ADD_PROPERTY(PropertyInfo(Variant::NODE_PATH, "node_b", PROPERTY_HINT_NODE_PATH_VALID_TYPES, "CollisionObject2D"), "set_node_b", "get_node_b");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "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() {
bias = 0;
exclude_from_collision = true;
}
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
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;
}
}
RID PinJoint2D::_configure_joint(PhysicsBody2D *body_a, PhysicsBody2D *body_b) {
RID pj = Physics2DServer::get_singleton()->pin_joint_create(get_global_transform().get_origin(), body_a->get_rid(), body_b ? body_b->get_rid() : RID());
Physics2DServer::get_singleton()->pin_joint_set_param(pj, Physics2DServer::PIN_JOINT_SOFTNESS, softness);
return pj;
}
void PinJoint2D::set_softness(real_t p_softness) {
softness = p_softness;
update();
if (get_joint().is_valid())
Physics2DServer::get_singleton()->pin_joint_set_param(get_joint(), Physics2DServer::PIN_JOINT_SOFTNESS, p_softness);
}
real_t PinJoint2D::get_softness() const {
return softness;
}
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);
ADD_PROPERTY(PropertyInfo(Variant::REAL, "softness", PROPERTY_HINT_EXP_RANGE, "0.00,16,0.01"), "set_softness", "get_softness");
}
PinJoint2D::PinJoint2D() {
softness = 0;
}
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
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;
}
}
RID GrooveJoint2D::_configure_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));
return Physics2DServer::get_singleton()->groove_joint_create(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;
update();
}
real_t GrooveJoint2D::get_length() const {
return length;
}
void GrooveJoint2D::set_initial_offset(real_t p_initial_offset) {
initial_offset = p_initial_offset;
update();
}
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::REAL, "length", PROPERTY_HINT_EXP_RANGE, "1,65535,1"), "set_length", "get_length");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "initial_offset", PROPERTY_HINT_EXP_RANGE, "1,65535,1"), "set_initial_offset", "get_initial_offset");
}
GrooveJoint2D::GrooveJoint2D() {
length = 50;
initial_offset = 25;
}
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
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;
}
}
RID DampedSpringJoint2D::_configure_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));
RID dsj = Physics2DServer::get_singleton()->damped_spring_joint_create(anchor_A, anchor_B, body_a->get_rid(), body_b->get_rid());
if (rest_length)
Physics2DServer::get_singleton()->damped_string_joint_set_param(dsj, Physics2DServer::DAMPED_STRING_REST_LENGTH, rest_length);
Physics2DServer::get_singleton()->damped_string_joint_set_param(dsj, Physics2DServer::DAMPED_STRING_STIFFNESS, stiffness);
Physics2DServer::get_singleton()->damped_string_joint_set_param(dsj, Physics2DServer::DAMPED_STRING_DAMPING, damping);
return dsj;
}
void DampedSpringJoint2D::set_length(real_t p_length) {
length = p_length;
update();
}
real_t DampedSpringJoint2D::get_length() const {
return length;
}
void DampedSpringJoint2D::set_rest_length(real_t p_rest_length) {
rest_length = p_rest_length;
update();
if (get_joint().is_valid())
Physics2DServer::get_singleton()->damped_string_joint_set_param(get_joint(), Physics2DServer::DAMPED_STRING_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;
update();
if (get_joint().is_valid())
Physics2DServer::get_singleton()->damped_string_joint_set_param(get_joint(), Physics2DServer::DAMPED_STRING_STIFFNESS, p_stiffness);
}
real_t DampedSpringJoint2D::get_stiffness() const {
return stiffness;
}
void DampedSpringJoint2D::set_damping(real_t p_damping) {
damping = p_damping;
update();
if (get_joint().is_valid())
Physics2DServer::get_singleton()->damped_string_joint_set_param(get_joint(), Physics2DServer::DAMPED_STRING_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::REAL, "length", PROPERTY_HINT_EXP_RANGE, "1,65535,1"), "set_length", "get_length");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "rest_length", PROPERTY_HINT_EXP_RANGE, "0,65535,1"), "set_rest_length", "get_rest_length");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "stiffness", PROPERTY_HINT_EXP_RANGE, "0.1,64,0.1"), "set_stiffness", "get_stiffness");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "damping", PROPERTY_HINT_EXP_RANGE, "0.01,16,0.01"), "set_damping", "get_damping");
}
DampedSpringJoint2D::DampedSpringJoint2D() {
length = 50;
rest_length = 0;
stiffness = 20;
damping = 1;
}
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