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godot/core/resource.cpp
Juan Linietsky a503f8aadc Groundbreaking!! Godot resources can now be flagged to be local to the scene being edited! 
This means that each time this scene is instanced, the resource will be unique!
As such, thanks to this, the following features were implemented:
-ButtonGroup is no longer a control, it's now a resource local to the scene
-ViewportTexture can be created from the editor and set to any object, making ViewportSprite and other kind of nodes obsolete!
2017-01-10 01:07:03 -03:00

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/*************************************************************************/
/* resource.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 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 "resource.h"
#include "core_string_names.h"
#include <stdio.h>
#include "os/file_access.h"
#include "io/resource_loader.h"
#include "script_language.h"
void ResourceImportMetadata::set_editor(const String& p_editor) {
editor=p_editor;
}
String ResourceImportMetadata::get_editor() const{
return editor;
}
void ResourceImportMetadata::add_source(const String& p_path,const String& p_md5) {
Source s;
s.md5=p_md5;
s.path=p_path;
sources.push_back(s);
}
String ResourceImportMetadata::get_source_path(int p_idx) const{
ERR_FAIL_INDEX_V(p_idx,sources.size(),String());
return sources[p_idx].path;
}
String ResourceImportMetadata::get_source_md5(int p_idx) const{
ERR_FAIL_INDEX_V(p_idx,sources.size(),String());
return sources[p_idx].md5;
}
void ResourceImportMetadata::set_source_md5(int p_idx,const String& p_md5) {
ERR_FAIL_INDEX(p_idx,sources.size());
sources[p_idx].md5=p_md5;
}
void ResourceImportMetadata::remove_source(int p_idx){
ERR_FAIL_INDEX(p_idx,sources.size());
sources.remove(p_idx);
}
int ResourceImportMetadata::get_source_count() const {
return sources.size();
}
void ResourceImportMetadata::set_option(const String& p_key, const Variant& p_value) {
if (p_value.get_type()==Variant::NIL) {
options.erase(p_key);
return;
}
ERR_FAIL_COND(p_value.get_type() == Variant::OBJECT);
ERR_FAIL_COND(p_value.get_type() == Variant::_RID);
options[p_key]=p_value;
}
bool ResourceImportMetadata::has_option(const String& p_key) const {
return options.has(p_key);
}
Variant ResourceImportMetadata::get_option(const String& p_key) const {
ERR_FAIL_COND_V(!options.has(p_key),Variant());
return options[p_key];
}
void ResourceImportMetadata::get_options(List<String> *r_options) const {
for(Map<String,Variant>::Element *E=options.front();E;E=E->next()) {
r_options->push_back(E->key());
}
}
StringArray ResourceImportMetadata::_get_options() const {
StringArray option_names;
option_names.resize(options.size());
int i=0;
for(Map<String,Variant>::Element *E=options.front();E;E=E->next()) {
option_names.set(i++,E->key());
}
return option_names;
}
void ResourceImportMetadata::_bind_methods() {
ClassDB::bind_method(_MD("set_editor","name"),&ResourceImportMetadata::set_editor);
ClassDB::bind_method(_MD("get_editor"),&ResourceImportMetadata::get_editor);
ClassDB::bind_method(_MD("add_source","path","md5"),&ResourceImportMetadata::add_source, "");
ClassDB::bind_method(_MD("get_source_path","idx"),&ResourceImportMetadata::get_source_path);
ClassDB::bind_method(_MD("get_source_md5","idx"),&ResourceImportMetadata::get_source_md5);
ClassDB::bind_method(_MD("set_source_md5","idx", "md5"),&ResourceImportMetadata::set_source_md5);
ClassDB::bind_method(_MD("remove_source","idx"),&ResourceImportMetadata::remove_source);
ClassDB::bind_method(_MD("get_source_count"),&ResourceImportMetadata::get_source_count);
ClassDB::bind_method(_MD("set_option","key","value"),&ResourceImportMetadata::set_option);
ClassDB::bind_method(_MD("get_option","key"),&ResourceImportMetadata::get_option);
ClassDB::bind_method(_MD("get_options"),&ResourceImportMetadata::_get_options);
}
ResourceImportMetadata::ResourceImportMetadata() {
}
void Resource::emit_changed() {
emit_signal(CoreStringNames::get_singleton()->changed);
}
void Resource::_resource_path_changed() {
}
void Resource::set_path(const String& p_path, bool p_take_over) {
if (path_cache==p_path)
return;
if (path_cache!="") {
ResourceCache::lock->write_lock();
ResourceCache::resources.erase(path_cache);
ResourceCache::lock->write_unlock();
}
path_cache="";
ResourceCache::lock->read_lock();
bool has_path = ResourceCache::resources.has( p_path );
ResourceCache::lock->read_unlock();
if (has_path) {
if (p_take_over) {
ResourceCache::lock->write_lock();
ResourceCache::resources.get(p_path)->set_name("");
ResourceCache::lock->write_unlock();
} else {
ERR_EXPLAIN("Another resource is loaded from path: "+p_path);
ResourceCache::lock->read_lock();
bool exists = ResourceCache::resources.has( p_path );
ResourceCache::lock->read_unlock();
ERR_FAIL_COND( exists );
}
}
path_cache=p_path;
if (path_cache!="") {
ResourceCache::lock->write_lock();
ResourceCache::resources[path_cache]=this;;
ResourceCache::lock->write_unlock();
}
_change_notify("resource_path");
_resource_path_changed();
}
String Resource::get_path() const {
return path_cache;
}
void Resource::set_subindex(int p_sub_index) {
subindex=p_sub_index;
}
int Resource::get_subindex() const{
return subindex;
}
void Resource::set_name(const String& p_name) {
name=p_name;
_change_notify("resource_name");
}
String Resource::get_name() const {
return name;
}
bool Resource::editor_can_reload_from_file() {
return true; //by default yes
}
void Resource::reload_from_file() {
String path=get_path();
if (!path.is_resource_file())
return;
Ref<Resource> s = ResourceLoader::load(path,get_class(),true);
if (!s.is_valid())
return;
List<PropertyInfo> pi;
s->get_property_list(&pi);
for (List<PropertyInfo>::Element *E=pi.front();E;E=E->next()) {
if (!(E->get().usage&PROPERTY_USAGE_STORAGE))
continue;
if (E->get().name=="resource_path")
continue; //do not change path
set(E->get().name,s->get(E->get().name));
}
}
Ref<Resource> Resource::duplicate_for_local_scene(Node *p_for_scene, Map<Ref<Resource>, Ref<Resource> > &remap_cache) {
List<PropertyInfo> plist;
get_property_list(&plist);
Resource *r = (Resource*)ClassDB::instance(get_class());
ERR_FAIL_COND_V(!r,Ref<Resource>());
r->local_scene=p_for_scene;
for(List<PropertyInfo>::Element *E=plist.front();E;E=E->next()) {
if (!(E->get().usage&PROPERTY_USAGE_STORAGE))
continue;
Variant p = get(E->get().name);
if (p.get_type()==Variant::OBJECT) {
RES sr = p;
if (sr.is_valid()) {
if (sr->is_local_to_scene()) {
if (remap_cache.has(sr)) {
p=remap_cache[sr];
} else {
RES dupe = sr->duplicate_for_local_scene(p_for_scene,remap_cache);
p=dupe;
remap_cache[sr]=dupe;
}
}
}
}
r->set(E->get().name,p);
}
return Ref<Resource>(r);
}
Ref<Resource> Resource::duplicate(bool p_subresources) {
List<PropertyInfo> plist;
get_property_list(&plist);
Resource *r = (Resource*)ClassDB::instance(get_class());
ERR_FAIL_COND_V(!r,Ref<Resource>());
for(List<PropertyInfo>::Element *E=plist.front();E;E=E->next()) {
if (!(E->get().usage&PROPERTY_USAGE_STORAGE))
continue;
Variant p = get(E->get().name);
if (p.get_type()==Variant::OBJECT && p_subresources) {
RES sr = p;
if (sr.is_valid())
p=sr->duplicate(true);
}
r->set(E->get().name,p);
}
return Ref<Resource>(r);
}
void Resource::_set_path(const String& p_path) {
set_path(p_path,false);
}
void Resource::_take_over_path(const String& p_path) {
set_path(p_path,true);
}
RID Resource::get_rid() const {
return RID();
}
void Resource::register_owner(Object *p_owner) {
owners.insert(p_owner->get_instance_ID());
}
void Resource::unregister_owner(Object *p_owner) {
owners.erase(p_owner->get_instance_ID());
}
void Resource::notify_change_to_owners() {
for(Set<ObjectID>::Element *E=owners.front();E;E=E->next()) {
Object *obj = ObjectDB::get_instance(E->get());
ERR_EXPLAIN("Object was deleted, while still owning a resource");
ERR_CONTINUE(!obj); //wtf
//TODO store string
obj->call("resource_changed",RES(this));
}
}
void Resource::set_import_metadata(const Ref<ResourceImportMetadata>& p_metadata) {
#ifdef TOOLS_ENABLED
import_metadata=p_metadata;
#endif
}
Ref<ResourceImportMetadata> Resource::get_import_metadata() const {
#ifdef TOOLS_ENABLED
return import_metadata;
#else
return Ref<ResourceImportMetadata>();
#endif
}
#ifdef TOOLS_ENABLED
uint32_t Resource::hash_edited_version() const {
uint32_t hash = hash_djb2_one_32(get_edited_version());
List<PropertyInfo> plist;
get_property_list(&plist);
for (List<PropertyInfo>::Element *E=plist.front();E;E=E->next()) {
if (E->get().type==Variant::OBJECT && E->get().hint==PROPERTY_HINT_RESOURCE_TYPE) {
RES res = get(E->get().name);
if (res.is_valid()) {
hash = hash_djb2_one_32(res->hash_edited_version(),hash);
}
}
}
return hash;
}
#endif
void Resource::set_local_to_scene(bool p_enable) {
local_to_scene=p_enable;
}
bool Resource::is_local_to_scene() const {
return local_to_scene;
}
Node* Resource::get_local_scene() const {
if (local_scene)
return local_scene;
if (_get_local_scene_func) {
return _get_local_scene_func();
}
return NULL;
}
void Resource::setup_local_to_scene() {
if (get_script_instance())
get_script_instance()->call("_setup_local_to_scene");
}
Node* (*Resource::_get_local_scene_func)()=NULL;
void Resource::_bind_methods() {
ClassDB::bind_method(_MD("set_path","path"),&Resource::_set_path);
ClassDB::bind_method(_MD("take_over_path","path"),&Resource::_take_over_path);
ClassDB::bind_method(_MD("get_path"),&Resource::get_path);
ClassDB::bind_method(_MD("set_name","name"),&Resource::set_name);
ClassDB::bind_method(_MD("get_name"),&Resource::get_name);
ClassDB::bind_method(_MD("get_rid"),&Resource::get_rid);
ClassDB::bind_method(_MD("set_import_metadata","metadata"),&Resource::set_import_metadata);
ClassDB::bind_method(_MD("get_import_metadata"),&Resource::get_import_metadata);
ClassDB::bind_method(_MD("set_local_to_scene","enable"),&Resource::set_local_to_scene);
ClassDB::bind_method(_MD("is_local_to_scene"),&Resource::is_local_to_scene);
ClassDB::bind_method(_MD("get_local_scene:Node"),&Resource::get_local_scene);
ClassDB::bind_method(_MD("setup_local_to_scene"),&Resource::setup_local_to_scene);
ClassDB::bind_method(_MD("duplicate","subresources"),&Resource::duplicate,DEFVAL(false));
ADD_SIGNAL( MethodInfo("changed") );
ADD_GROUP("Resource","resource_");
ADD_PROPERTYNZ( PropertyInfo(Variant::BOOL,"resource_local_to_scene" ), _SCS("set_local_to_scene"),_SCS("is_local_to_scene"));
ADD_PROPERTY( PropertyInfo(Variant::STRING,"resource_path",PROPERTY_HINT_NONE,"",PROPERTY_USAGE_EDITOR ), _SCS("set_path"),_SCS("get_path"));
ADD_PROPERTYNZ( PropertyInfo(Variant::STRING,"resource_name"), _SCS("set_name"),_SCS("get_name"));
BIND_VMETHOD( MethodInfo("_setup_local_to_scene") );
}
Resource::Resource() {
#ifdef TOOLS_ENABLED
last_modified_time=0;
#endif
subindex=0;
local_scene=NULL;
}
Resource::~Resource() {
if (path_cache!="") {
ResourceCache::lock->write_lock();
ResourceCache::resources.erase(path_cache);
ResourceCache::lock->write_unlock();
}
if (owners.size()) {
WARN_PRINT("Resource is still owned");
}
}
HashMap<String,Resource*> ResourceCache::resources;
RWLock *ResourceCache::lock=NULL;
void ResourceCache::setup() {
lock = RWLock::create();
}
void ResourceCache::clear() {
if (resources.size())
ERR_PRINT("Resources Still in use at Exit!");
resources.clear();
memdelete(lock);
}
void ResourceCache::reload_externals() {
//const String *K=NULL;
//while ((K=resources.next(K))) {
// resources[*K]->reload_external_data();
// }
}
bool ResourceCache::has(const String& p_path) {
lock->read_lock();;
bool b = resources.has(p_path);
lock->read_unlock();;
return b;
}
Resource *ResourceCache::get(const String& p_path) {
lock->read_lock();
Resource **res = resources.getptr(p_path);
lock->read_unlock();
if (!res) {
return NULL;
}
return *res;
}
void ResourceCache::get_cached_resources(List<Ref<Resource> > *p_resources) {
lock->read_lock();
const String* K=NULL;
while((K=resources.next(K))) {
Resource *r = resources[*K];
p_resources->push_back( Ref<Resource>( r ));
}
lock->read_unlock();
}
int ResourceCache::get_cached_resource_count() {
lock->read_lock();
int rc = resources.size();
lock->read_unlock();
return rc;
}
void ResourceCache::dump(const char* p_file,bool p_short) {
#ifdef DEBUG_ENABLED
lock->read_lock();
Map<String,int> type_count;
FileAccess *f=NULL;
if (p_file) {
f = FileAccess::open(p_file,FileAccess::WRITE);
ERR_FAIL_COND(!f);
}
const String* K=NULL;
while((K=resources.next(K))) {
Resource *r = resources[*K];
if (!type_count.has(r->get_class())) {
type_count[r->get_class()]=0;
}
type_count[r->get_class()]++;
if (!p_short) {
if (f)
f->store_line(r->get_class()+": "+r->get_path());
}
}
for(Map<String,int>::Element *E=type_count.front();E;E=E->next()) {
if (f)
f->store_line(E->key()+" count: "+itos(E->get()));
}
if (f) {
f->close();
memdelete(f);
}
lock->read_unlock();
#endif
}
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