From 0b806ee0fc9097fa7bda7ac0109191c9c5e0a1ac Mon Sep 17 00:00:00 2001
From: Juan Linietsky
Date: Sun, 9 Feb 2014 22:10:30 -0300
Subject: GODOT IS OPEN SOURCE

---
 scene/resources/scene_preloader.cpp | 455 ++++++++++++++++++++++++++++++++++++
 1 file changed, 455 insertions(+)
 create mode 100644 scene/resources/scene_preloader.cpp

(limited to 'scene/resources/scene_preloader.cpp')

diff --git a/scene/resources/scene_preloader.cpp b/scene/resources/scene_preloader.cpp
new file mode 100644
index 000000000..59d8cae97
--- /dev/null
+++ b/scene/resources/scene_preloader.cpp
@@ -0,0 +1,455 @@
+/*************************************************************************/
+/*  scene_preloader.cpp                                                  */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* 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 "scene_preloader.h"
+#include "scene/io/scene_loader.h"
+#include "globals.h"
+
+bool ScenePreloader::can_instance() const {
+
+	return nodes.size()>0;
+}
+
+Node *ScenePreloader::instance() const {
+
+	int nc = nodes.size();
+	ERR_FAIL_COND_V(nc==0,NULL);
+
+	const StringName*snames=NULL;
+	int sname_count=names.size();
+	if (sname_count)
+		snames=&names[0];
+
+	const Variant*props=NULL;
+	int prop_count=variants.size();
+	if (prop_count)
+		props=&variants[0];
+
+	Vector<Variant> properties;
+
+	const NodeData *nd = &nodes[0];
+
+	Node **ret_nodes=(Node**)alloca( sizeof(Node*)*nc );
+
+	for(int i=0;i<nc;i++) {
+
+		const NodeData &n=nd[i];
+
+
+		if (!ObjectTypeDB::is_type_enabled(snames[n.type])) {
+			ret_nodes[i]=NULL;
+			continue;
+		}
+
+		Object * obj = ObjectTypeDB::instance(snames[ n.type ]);
+		ERR_FAIL_COND_V(!obj,NULL);
+		Node *node = obj->cast_to<Node>();
+		ERR_FAIL_COND_V(!node,NULL);
+
+		int nprop_count=n.properties.size();
+		if (nprop_count) {
+
+			const NodeData::Property* nprops=&n.properties[0];
+
+			for(int j=0;j<nprop_count;j++) {
+
+				bool valid;
+				node->set(snames[ nprops[j].name ],props[ nprops[j].value ],&valid);
+			}
+
+
+		}
+
+		node->set_name( snames[ n.name ] );
+		ret_nodes[i]=node;
+		if (i>0) {
+			ERR_FAIL_INDEX_V(n.parent,i,NULL);
+			ERR_FAIL_COND_V(!ret_nodes[n.parent],NULL);
+			ret_nodes[n.parent]->add_child(node);
+		}
+	}
+
+
+	//do connections
+
+	int cc = connections.size();
+	const ConnectionData *cdata = connections.ptr();
+
+	for(int i=0;i<cc;i++) {
+
+		const ConnectionData &c=cdata[i];
+		ERR_FAIL_INDEX_V( c.from, nc, NULL );
+		ERR_FAIL_INDEX_V( c.to, nc, NULL );
+
+		Vector<Variant> binds;
+		if (c.binds.size()) {
+			binds.resize(c.binds.size());
+			for(int j=0;j<c.binds.size();j++)
+				binds[j]=props[ c.binds[j] ];
+		}
+
+		if (!ret_nodes[c.from] || !ret_nodes[c.to])
+			continue;
+		ret_nodes[c.from]->connect( snames[ c.signal], ret_nodes[ c.to ], snames[ c.method], binds,CONNECT_PERSIST );
+	}
+
+	return ret_nodes[0];
+
+}
+
+
+static int _nm_get_string(const String& p_string, Map<StringName,int> &name_map) {
+
+	if (name_map.has(p_string))
+		return name_map[p_string];
+
+	int idx = name_map.size();
+	name_map[p_string]=idx;
+	return idx;
+}
+
+static int _vm_get_variant(const Variant& p_variant, HashMap<Variant,int,VariantHasher> &variant_map) {
+
+	if (variant_map.has(p_variant))
+		return variant_map[p_variant];
+
+	int idx = variant_map.size();
+	variant_map[p_variant]=idx;
+	return idx;
+}
+
+void ScenePreloader::_parse_node(Node *p_owner,Node *p_node,int p_parent_idx, Map<StringName,int> &name_map,HashMap<Variant,int,VariantHasher> &variant_map,Map<Node*,int> &node_map) {
+
+	if (p_node!=p_owner && !p_node->get_owner())
+		return;
+
+	NodeData nd;
+	nd.name=_nm_get_string(p_node->get_name(),name_map);
+	nd.type=_nm_get_string(p_node->get_type(),name_map);
+	nd.parent=p_parent_idx;
+
+	List<PropertyInfo> plist;
+	p_node->get_property_list(&plist);
+	for (List<PropertyInfo>::Element *E=plist.front();E;E=E->next()) {
+
+		if (!(E->get().usage & PROPERTY_USAGE_STORAGE))
+			continue;
+
+		NodeData::Property prop;
+		prop.name=_nm_get_string(E->get().name,name_map);
+		prop.value=_vm_get_variant( p_node->get( E->get().name ), variant_map);
+		nd.properties.push_back(prop);
+	}
+
+	int idx = nodes.size();
+	node_map[p_node]=idx;
+	nodes.push_back(nd);
+
+	for(int i=0;i<p_node->get_child_count();i++) {
+
+		Node *c=p_node->get_child(i);
+		_parse_node(p_owner,c,idx,name_map,variant_map,node_map);
+	}
+
+
+
+}
+
+void ScenePreloader::_parse_connections(Node *p_node, Map<StringName,int> &name_map,HashMap<Variant,int,VariantHasher> &variant_map,Map<Node*,int> &node_map,bool p_instance) {
+
+
+	List<MethodInfo> signals;
+	p_node->get_signal_list(&signals);
+
+	for(List<MethodInfo>::Element *E=signals.front();E;E=E->next()) {
+
+		List<Node::Connection> conns;
+		p_node->get_signal_connection_list(E->get().name,&conns);
+		for(List<Node::Connection>::Element *F=conns.front();F;F=F->next()) {
+
+			const Node::Connection &c = F->get();
+			if (!(c.flags&CONNECT_PERSIST))
+				continue;
+			Node *n=c.target->cast_to<Node>();
+			if (!n)
+				continue;
+
+			if (!node_map.has(n))
+				continue;
+
+			ConnectionData cd;
+			cd.from=node_map[p_node];
+			cd.to=node_map[n];
+			cd.method=_nm_get_string(c.method,name_map);
+			cd.signal=_nm_get_string(c.signal,name_map);
+			for(int i=0;i<c.binds.size();i++) {
+
+				cd.binds.push_back( _vm_get_variant(c.binds[i],variant_map));
+			}
+			connections.push_back(cd);
+		}
+	}
+
+}
+
+
+Error ScenePreloader::load_scene(const String& p_path) {
+
+	return ERR_CANT_OPEN;
+#if 0
+	if (path==p_path)
+		return OK;
+
+	String p=Globals::get_singleton()->localize_path(p_path);
+	clear();
+
+	Node *scene = SceneLoader::load(p);
+
+	ERR_FAIL_COND_V(!scene,ERR_CANT_OPEN);
+
+	path=p;
+
+	Map<StringName,int> name_map;
+	HashMap<Variant,int,VariantHasher> variant_map;
+	Map<Node*,int> node_map;
+
+	_parse_node(scene,scene,-1,name_map,variant_map,node_map);
+
+
+	names.resize(name_map.size());
+
+	for(Map<StringName,int>::Element *E=name_map.front();E;E=E->next()) {
+
+		names[E->get()]=E->key();
+	}
+
+	variants.resize(variant_map.size());
+	const Variant *K=NULL;
+	while((K=variant_map.next(K))) {
+
+		int idx = variant_map[*K];
+		variants[idx]=*K;
+	}
+
+
+	memdelete(scene); // <- me falto esto :(
+	return OK;
+#endif
+}
+
+String ScenePreloader::get_scene_path() const {
+
+	return path;
+}
+
+void ScenePreloader::clear() {
+
+	names.clear();
+	variants.clear();
+	nodes.clear();
+	connections.clear();
+
+}
+
+void ScenePreloader::_set_bundled_scene(const Dictionary& d) {
+
+
+	ERR_FAIL_COND( !d.has("names"));
+	ERR_FAIL_COND( !d.has("variants"));
+	ERR_FAIL_COND( !d.has("node_count"));
+	ERR_FAIL_COND( !d.has("nodes"));
+	ERR_FAIL_COND( !d.has("conn_count"));
+	ERR_FAIL_COND( !d.has("conns"));
+	ERR_FAIL_COND( !d.has("path"));
+
+	DVector<String> snames = d["names"];
+	if (snames.size()) {
+
+		int namecount = snames.size();
+		names.resize(namecount);
+		DVector<String>::Read r =snames.read();
+		for(int i=0;i<names.size();i++)
+			names[i]=r[i];
+	}
+
+	Array svariants = d["variants"];
+
+	if (svariants.size()) {
+		int varcount=svariants.size();
+		variants.resize(varcount);
+		for(int i=0;i<varcount;i++) {
+
+			variants[i]=svariants[i];
+		}
+
+	} else {
+		variants.clear();
+	}
+
+	nodes.resize(d["node_count"]);
+	int nc=nodes.size();
+	if (nc) {
+		DVector<int> snodes = d["nodes"];
+		DVector<int>::Read r = snodes.read();
+		int idx=0;
+		for(int i=0;i<nc;i++) {
+			NodeData &nd = nodes[i];
+			nd.parent=r[idx++];
+			nd.type=r[idx++];
+			nd.name=r[idx++];
+			nd.properties.resize(r[idx++]);
+			for(int j=0;j<nd.properties.size();j++) {
+
+				nd.properties[j].name=r[idx++];
+				nd.properties[j].value=r[idx++];
+			}
+		}
+
+	}
+
+	connections.resize(d["conn_count"]);
+	int cc=connections.size();
+
+	if (cc) {
+
+		DVector<int> sconns = d["conns"];
+		DVector<int>::Read r = sconns.read();
+		int idx=0;
+		for(int i=0;i<nc;i++) {
+			ConnectionData &cd = connections[nc];
+			cd.from=r[idx++];
+			cd.to=r[idx++];
+			cd.signal=r[idx++];
+			cd.method=r[idx++];
+			cd.binds.resize(r[idx++]);
+			for(int j=0;j<cd.binds.size();j++) {
+
+				cd.binds[j]=r[idx++];
+			}
+		}
+
+	}
+
+
+
+	path=d["path"];
+
+}
+
+Dictionary ScenePreloader::_get_bundled_scene() const {
+
+	DVector<String> rnames;
+	rnames.resize(names.size());
+
+	if (names.size()) {
+
+		DVector<String>::Write r=rnames.write();
+
+		for(int i=0;i<names.size();i++)
+			r[i]=names[i];
+	}
+
+	Dictionary d;
+	d["names"]=rnames;
+	d["variants"]=variants;
+
+	Vector<int> rnodes;
+	d["node_count"]=nodes.size();
+
+	for(int i=0;i<nodes.size();i++) {
+
+		const NodeData &nd=nodes[i];
+		rnodes.push_back(nd.parent);
+		rnodes.push_back(nd.type);
+		rnodes.push_back(nd.name);
+		rnodes.push_back(nd.properties.size());
+		for(int j=0;j<nd.properties.size();j++) {
+
+			rnodes.push_back(nd.properties[j].name);
+			rnodes.push_back(nd.properties[j].value);
+		}
+	}
+
+	d["nodes"]=rnodes;
+
+	Vector<int> rconns;
+	d["conn_count"]=connections.size();
+
+	for(int i=0;i<connections.size();i++) {
+
+		const ConnectionData &cd=connections[i];
+		rconns.push_back(cd.from);
+		rconns.push_back(cd.to);
+		rconns.push_back(cd.signal);
+		rconns.push_back(cd.method);
+		rconns.push_back(cd.binds.size());
+		for(int j=0;j<cd.binds.size();i++)
+			rconns.push_back(cd.binds[j]);
+
+	}
+
+	d["conns"]=rconns;
+
+	d["path"]=path;
+
+	return d;
+
+
+}
+
+void ScenePreloader::_bind_methods() {
+
+	ObjectTypeDB::bind_method(_MD("load_scene","path"),&ScenePreloader::load_scene);
+	ObjectTypeDB::bind_method(_MD("get_scene_path"),&ScenePreloader::get_scene_path);
+	ObjectTypeDB::bind_method(_MD("instance:Node"),&ScenePreloader::instance);
+	ObjectTypeDB::bind_method(_MD("can_instance"),&ScenePreloader::can_instance);
+	ObjectTypeDB::bind_method(_MD("_set_bundled_scene"),&ScenePreloader::_set_bundled_scene);
+	ObjectTypeDB::bind_method(_MD("_get_bundled_scene"),&ScenePreloader::_get_bundled_scene);
+
+	ADD_PROPERTY( PropertyInfo(Variant::DICTIONARY,"_bundled",PROPERTY_HINT_NONE,"",PROPERTY_USAGE_BUNDLE),_SCS("_set_bundled_scene"),_SCS("_get_bundled_scene"));
+#if 0
+	List<String> extensions;
+	SceneLoader::get_recognized_extensions(&extensions);
+	String exthint;
+	for (List<String>::Element*E=extensions.front();E;E=E->next()) {
+
+		if (exthint!="")
+			exthint+=",";
+		exthint+="*."+E->get();
+	}
+
+	exthint+="; Scenes";
+
+	ADD_PROPERTY( PropertyInfo(Variant::STRING,"scene",PROPERTY_HINT_FILE,exthint),_SCS("load_scene"),_SCS("get_scene_path"));
+#endif
+}
+
+ScenePreloader::ScenePreloader() {
+
+
+}
-- 
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