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godot/modules/gltf/extensions/physics/gltf_physics_body.cpp

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/**************************************************************************/
/* gltf_physics_body.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 "gltf_physics_body.h"
#include "scene/3d/area_3d.h"
#include "scene/3d/vehicle_body_3d.h"
void GLTFPhysicsBody::_bind_methods() {
ClassDB::bind_static_method("GLTFPhysicsBody", D_METHOD("from_node", "body_node"), &GLTFPhysicsBody::from_node);
ClassDB::bind_method(D_METHOD("to_node"), &GLTFPhysicsBody::to_node);
ClassDB::bind_static_method("GLTFPhysicsBody", D_METHOD("from_dictionary", "dictionary"), &GLTFPhysicsBody::from_dictionary);
ClassDB::bind_method(D_METHOD("to_dictionary"), &GLTFPhysicsBody::to_dictionary);
ClassDB::bind_method(D_METHOD("get_body_type"), &GLTFPhysicsBody::get_body_type);
ClassDB::bind_method(D_METHOD("set_body_type", "body_type"), &GLTFPhysicsBody::set_body_type);
ClassDB::bind_method(D_METHOD("get_mass"), &GLTFPhysicsBody::get_mass);
ClassDB::bind_method(D_METHOD("set_mass", "mass"), &GLTFPhysicsBody::set_mass);
ClassDB::bind_method(D_METHOD("get_linear_velocity"), &GLTFPhysicsBody::get_linear_velocity);
ClassDB::bind_method(D_METHOD("set_linear_velocity", "linear_velocity"), &GLTFPhysicsBody::set_linear_velocity);
ClassDB::bind_method(D_METHOD("get_angular_velocity"), &GLTFPhysicsBody::get_angular_velocity);
ClassDB::bind_method(D_METHOD("set_angular_velocity", "angular_velocity"), &GLTFPhysicsBody::set_angular_velocity);
ClassDB::bind_method(D_METHOD("get_inertia"), &GLTFPhysicsBody::get_inertia);
ClassDB::bind_method(D_METHOD("set_inertia", "inertia"), &GLTFPhysicsBody::set_inertia);
ADD_PROPERTY(PropertyInfo(Variant::STRING, "body_type"), "set_body_type", "get_body_type");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "mass"), "set_mass", "get_mass");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR3, "linear_velocity"), "set_linear_velocity", "get_linear_velocity");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR3, "angular_velocity"), "set_angular_velocity", "get_angular_velocity");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR3, "inertia"), "set_inertia", "get_inertia");
}
String GLTFPhysicsBody::get_body_type() const {
return body_type;
}
void GLTFPhysicsBody::set_body_type(String p_body_type) {
body_type = p_body_type;
}
real_t GLTFPhysicsBody::get_mass() const {
return mass;
}
void GLTFPhysicsBody::set_mass(real_t p_mass) {
mass = p_mass;
}
Vector3 GLTFPhysicsBody::get_linear_velocity() const {
return linear_velocity;
}
void GLTFPhysicsBody::set_linear_velocity(Vector3 p_linear_velocity) {
linear_velocity = p_linear_velocity;
}
Vector3 GLTFPhysicsBody::get_angular_velocity() const {
return angular_velocity;
}
void GLTFPhysicsBody::set_angular_velocity(Vector3 p_angular_velocity) {
angular_velocity = p_angular_velocity;
}
Vector3 GLTFPhysicsBody::get_inertia() const {
return inertia;
}
void GLTFPhysicsBody::set_inertia(Vector3 p_inertia) {
inertia = p_inertia;
}
Ref<GLTFPhysicsBody> GLTFPhysicsBody::from_node(const CollisionObject3D *p_body_node) {
Ref<GLTFPhysicsBody> physics_body;
physics_body.instantiate();
ERR_FAIL_COND_V_MSG(!p_body_node, physics_body, "Tried to create a GLTFPhysicsBody from a CollisionObject3D node, but the given node was null.");
if (cast_to<CharacterBody3D>(p_body_node)) {
physics_body->body_type = "character";
} else if (cast_to<AnimatableBody3D>(p_body_node)) {
physics_body->body_type = "kinematic";
} else if (cast_to<RigidBody3D>(p_body_node)) {
const RigidBody3D *body = cast_to<const RigidBody3D>(p_body_node);
physics_body->mass = body->get_mass();
physics_body->linear_velocity = body->get_linear_velocity();
physics_body->angular_velocity = body->get_angular_velocity();
physics_body->inertia = body->get_inertia();
if (cast_to<VehicleBody3D>(p_body_node)) {
physics_body->body_type = "vehicle";
} else {
physics_body->body_type = "rigid";
}
} else if (cast_to<StaticBody3D>(p_body_node)) {
physics_body->body_type = "static";
} else if (cast_to<Area3D>(p_body_node)) {
physics_body->body_type = "trigger";
}
return physics_body;
}
CollisionObject3D *GLTFPhysicsBody::to_node() const {
if (body_type == "character") {
CharacterBody3D *body = memnew(CharacterBody3D);
return body;
}
if (body_type == "kinematic") {
AnimatableBody3D *body = memnew(AnimatableBody3D);
return body;
}
if (body_type == "vehicle") {
VehicleBody3D *body = memnew(VehicleBody3D);
body->set_mass(mass);
body->set_linear_velocity(linear_velocity);
body->set_angular_velocity(angular_velocity);
body->set_inertia(inertia);
return body;
}
if (body_type == "rigid") {
RigidBody3D *body = memnew(RigidBody3D);
body->set_mass(mass);
body->set_linear_velocity(linear_velocity);
body->set_angular_velocity(angular_velocity);
body->set_inertia(inertia);
return body;
}
if (body_type == "static") {
StaticBody3D *body = memnew(StaticBody3D);
return body;
}
if (body_type == "trigger") {
Area3D *body = memnew(Area3D);
return body;
}
ERR_FAIL_V_MSG(nullptr, "Error converting GLTFPhysicsBody to a node: Body type '" + body_type + "' is unknown.");
}
Ref<GLTFPhysicsBody> GLTFPhysicsBody::from_dictionary(const Dictionary p_dictionary) {
Ref<GLTFPhysicsBody> physics_body;
physics_body.instantiate();
ERR_FAIL_COND_V_MSG(!p_dictionary.has("type"), physics_body, "Failed to parse GLTF physics body, missing required field 'type'.");
const String &body_type = p_dictionary["type"];
physics_body->body_type = body_type;
if (p_dictionary.has("mass")) {
physics_body->mass = p_dictionary["mass"];
}
if (p_dictionary.has("linearVelocity")) {
const Array &arr = p_dictionary["linearVelocity"];
if (arr.size() == 3) {
physics_body->set_linear_velocity(Vector3(arr[0], arr[1], arr[2]));
} else {
ERR_PRINT("Error parsing GLTF physics body: The linear velocity vector must have exactly 3 numbers.");
}
}
if (p_dictionary.has("angularVelocity")) {
const Array &arr = p_dictionary["angularVelocity"];
if (arr.size() == 3) {
physics_body->set_angular_velocity(Vector3(arr[0], arr[1], arr[2]));
} else {
ERR_PRINT("Error parsing GLTF physics body: The angular velocity vector must have exactly 3 numbers.");
}
}
if (p_dictionary.has("inertiaTensor")) {
const Array &arr = p_dictionary["inertiaTensor"];
if (arr.size() == 9) {
// Only use the diagonal elements of the inertia tensor matrix (principal axes).
physics_body->set_inertia(Vector3(arr[0], arr[4], arr[8]));
} else {
ERR_PRINT("Error parsing GLTF physics body: The inertia tensor must be a 3x3 matrix (9 number array).");
}
}
if (body_type != "character" && body_type != "kinematic" && body_type != "rigid" && body_type != "static" && body_type != "trigger" && body_type != "vehicle") {
ERR_PRINT("Error parsing GLTF physics body: Body type '" + body_type + "' is unknown.");
}
return physics_body;
}
Dictionary GLTFPhysicsBody::to_dictionary() const {
Dictionary d;
d["type"] = body_type;
if (mass != 1.0) {
d["mass"] = mass;
}
if (linear_velocity != Vector3()) {
Array velocity_array;
velocity_array.resize(3);
velocity_array[0] = linear_velocity.x;
velocity_array[1] = linear_velocity.y;
velocity_array[2] = linear_velocity.z;
d["linearVelocity"] = velocity_array;
}
if (angular_velocity != Vector3()) {
Array velocity_array;
velocity_array.resize(3);
velocity_array[0] = angular_velocity.x;
velocity_array[1] = angular_velocity.y;
velocity_array[2] = angular_velocity.z;
d["angularVelocity"] = velocity_array;
}
if (inertia != Vector3()) {
Array inertia_array;
inertia_array.resize(9);
inertia_array.fill(0.0);
inertia_array[0] = inertia.x;
inertia_array[4] = inertia.y;
inertia_array[8] = inertia.z;
d["inertiaTensor"] = inertia_array;
}
return d;
}
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