godot/scene/2d/skeleton_2d.cpp
2020-04-02 13:38:00 +02:00

311 lines
8.9 KiB
C++

/*************************************************************************/
/* skeleton_2d.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 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 "skeleton_2d.h"
void Bone2D::_notification(int p_what) {
if (p_what == NOTIFICATION_ENTER_TREE) {
Node *parent = get_parent();
parent_bone = Object::cast_to<Bone2D>(parent);
skeleton = nullptr;
while (parent) {
skeleton = Object::cast_to<Skeleton2D>(parent);
if (skeleton)
break;
if (!Object::cast_to<Bone2D>(parent))
break; //skeletons must be chained to Bone2Ds.
parent = parent->get_parent();
}
if (skeleton) {
Skeleton2D::Bone bone;
bone.bone = this;
skeleton->bones.push_back(bone);
skeleton->_make_bone_setup_dirty();
}
}
if (p_what == NOTIFICATION_LOCAL_TRANSFORM_CHANGED) {
if (skeleton) {
skeleton->_make_transform_dirty();
}
}
if (p_what == NOTIFICATION_MOVED_IN_PARENT) {
if (skeleton) {
skeleton->_make_bone_setup_dirty();
}
}
if (p_what == NOTIFICATION_EXIT_TREE) {
if (skeleton) {
for (int i = 0; i < skeleton->bones.size(); i++) {
if (skeleton->bones[i].bone == this) {
skeleton->bones.remove(i);
break;
}
}
skeleton->_make_bone_setup_dirty();
skeleton = nullptr;
}
parent_bone = nullptr;
}
}
void Bone2D::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_rest", "rest"), &Bone2D::set_rest);
ClassDB::bind_method(D_METHOD("get_rest"), &Bone2D::get_rest);
ClassDB::bind_method(D_METHOD("apply_rest"), &Bone2D::apply_rest);
ClassDB::bind_method(D_METHOD("get_skeleton_rest"), &Bone2D::get_skeleton_rest);
ClassDB::bind_method(D_METHOD("get_index_in_skeleton"), &Bone2D::get_index_in_skeleton);
ClassDB::bind_method(D_METHOD("set_default_length", "default_length"), &Bone2D::set_default_length);
ClassDB::bind_method(D_METHOD("get_default_length"), &Bone2D::get_default_length);
ADD_PROPERTY(PropertyInfo(Variant::TRANSFORM2D, "rest"), "set_rest", "get_rest");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "default_length", PROPERTY_HINT_RANGE, "1,1024,1"), "set_default_length", "get_default_length");
}
void Bone2D::set_rest(const Transform2D &p_rest) {
rest = p_rest;
if (skeleton)
skeleton->_make_bone_setup_dirty();
update_configuration_warning();
}
Transform2D Bone2D::get_rest() const {
return rest;
}
Transform2D Bone2D::get_skeleton_rest() const {
if (parent_bone) {
return parent_bone->get_skeleton_rest() * rest;
} else {
return rest;
}
}
void Bone2D::apply_rest() {
set_transform(rest);
}
void Bone2D::set_default_length(float p_length) {
default_length = p_length;
}
float Bone2D::get_default_length() const {
return default_length;
}
int Bone2D::get_index_in_skeleton() const {
ERR_FAIL_COND_V(!skeleton, -1);
skeleton->_update_bone_setup();
return skeleton_index;
}
String Bone2D::get_configuration_warning() const {
String warning = Node2D::get_configuration_warning();
if (!skeleton) {
if (warning != String()) {
warning += "\n\n";
}
if (parent_bone) {
warning += TTR("This Bone2D chain should end at a Skeleton2D node.");
} else {
warning += TTR("A Bone2D only works with a Skeleton2D or another Bone2D as parent node.");
}
}
if (rest == Transform2D(0, 0, 0, 0, 0, 0)) {
if (warning != String()) {
warning += "\n\n";
}
warning += TTR("This bone lacks a proper REST pose. Go to the Skeleton2D node and set one.");
}
return warning;
}
Bone2D::Bone2D() {
skeleton = nullptr;
parent_bone = nullptr;
skeleton_index = -1;
default_length = 16;
set_notify_local_transform(true);
//this is a clever hack so the bone knows no rest has been set yet, allowing to show an error.
for (int i = 0; i < 3; i++) {
rest[i] = Vector2(0, 0);
}
}
//////////////////////////////////////
void Skeleton2D::_make_bone_setup_dirty() {
if (bone_setup_dirty)
return;
bone_setup_dirty = true;
if (is_inside_tree()) {
call_deferred("_update_bone_setup");
}
}
void Skeleton2D::_update_bone_setup() {
if (!bone_setup_dirty)
return;
bone_setup_dirty = false;
RS::get_singleton()->skeleton_allocate(skeleton, bones.size(), true);
bones.sort(); //sorty so they are always in the same order/index
for (int i = 0; i < bones.size(); i++) {
bones.write[i].rest_inverse = bones[i].bone->get_skeleton_rest().affine_inverse(); //bind pose
bones.write[i].bone->skeleton_index = i;
Bone2D *parent_bone = Object::cast_to<Bone2D>(bones[i].bone->get_parent());
if (parent_bone) {
bones.write[i].parent_index = parent_bone->skeleton_index;
} else {
bones.write[i].parent_index = -1;
}
}
transform_dirty = true;
_update_transform();
emit_signal("bone_setup_changed");
}
void Skeleton2D::_make_transform_dirty() {
if (transform_dirty)
return;
transform_dirty = true;
if (is_inside_tree()) {
call_deferred("_update_transform");
}
}
void Skeleton2D::_update_transform() {
if (bone_setup_dirty) {
_update_bone_setup();
return; //above will update transform anyway
}
if (!transform_dirty)
return;
transform_dirty = false;
for (int i = 0; i < bones.size(); i++) {
ERR_CONTINUE(bones[i].parent_index >= i);
if (bones[i].parent_index >= 0) {
bones.write[i].accum_transform = bones[bones[i].parent_index].accum_transform * bones[i].bone->get_transform();
} else {
bones.write[i].accum_transform = bones[i].bone->get_transform();
}
}
for (int i = 0; i < bones.size(); i++) {
Transform2D final_xform = bones[i].accum_transform * bones[i].rest_inverse;
RS::get_singleton()->skeleton_bone_set_transform_2d(skeleton, i, final_xform);
}
}
int Skeleton2D::get_bone_count() const {
ERR_FAIL_COND_V(!is_inside_tree(), 0);
if (bone_setup_dirty) {
const_cast<Skeleton2D *>(this)->_update_bone_setup();
}
return bones.size();
}
Bone2D *Skeleton2D::get_bone(int p_idx) {
ERR_FAIL_COND_V(!is_inside_tree(), nullptr);
ERR_FAIL_INDEX_V(p_idx, bones.size(), nullptr);
return bones[p_idx].bone;
}
void Skeleton2D::_notification(int p_what) {
if (p_what == NOTIFICATION_READY) {
if (bone_setup_dirty)
_update_bone_setup();
if (transform_dirty)
_update_transform();
request_ready();
}
if (p_what == NOTIFICATION_TRANSFORM_CHANGED) {
RS::get_singleton()->skeleton_set_base_transform_2d(skeleton, get_global_transform());
}
}
RID Skeleton2D::get_skeleton() const {
return skeleton;
}
void Skeleton2D::_bind_methods() {
ClassDB::bind_method(D_METHOD("_update_bone_setup"), &Skeleton2D::_update_bone_setup);
ClassDB::bind_method(D_METHOD("_update_transform"), &Skeleton2D::_update_transform);
ClassDB::bind_method(D_METHOD("get_bone_count"), &Skeleton2D::get_bone_count);
ClassDB::bind_method(D_METHOD("get_bone", "idx"), &Skeleton2D::get_bone);
ClassDB::bind_method(D_METHOD("get_skeleton"), &Skeleton2D::get_skeleton);
ADD_SIGNAL(MethodInfo("bone_setup_changed"));
}
Skeleton2D::Skeleton2D() {
bone_setup_dirty = true;
transform_dirty = true;
skeleton = RS::get_singleton()->skeleton_create();
set_notify_transform(true);
}
Skeleton2D::~Skeleton2D() {
RS::get_singleton()->free(skeleton);
}