godotengine
/
godot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
godot/scene/2d/physics/joints/joint_2d.cpp

258 lines
8.4 KiB
C++
Raw Blame History

/**************************************************************************/
/* 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);
}
Reference in New Issue View Git Blame Copy Permalink