Store talk node type in scenario file as enumerator instead of numer

- Also, don't write empty CDATA sections when dialogue name/look/job sections are completely empty.

rsrc/schemas/dialogue.xsd

@@ -47,7 +47,7 @@
 		<xs:complexType>
 			<xs:sequence>
 				<xs:element name="keyword" minOccurs="1" maxOccurs="2" type="xs:string"/>
-				<xs:element name="type" type="xs:integer"/>
+				<xs:element name="type" type="xs:token"/>
 				<xs:element name="param" minOccurs="0" maxOccurs="4" type="xs:integer"/>
 				<xs:element name="text" minOccurs="1" maxOccurs="2" type="xs:string"/>
 			</xs:sequence>

rsrc/schemas/scenario.xsd

@@ -167,7 +167,7 @@
 							<xs:element name='description' type='xs:string'/>
 							<xs:element name='node' type='xs:integer'/>
 							<xs:element name='quantity' type='shop-amount'/>
-							<xs:element name='cost' type='xs:integer' minOccurs="0"/>
+							<xs:element name='cost' type='xs:integer'/>
 							<xs:element name='icon' type='xs:integer'/>
 						</xs:all>
 					</xs:complexType>

rsrc/schemas/town.xsd

@@ -139,7 +139,7 @@
 							</xs:simpleContent>
 						</xs:complexType>
 					</xs:element>
-					<xs:element name="item">
+					<xs:element name="item" minOccurs="0">
 						<xs:complexType>
 							<xs:all>
 								<xs:element name="type" type="xs:integer"/>
@@ -152,7 +152,7 @@
 							<xs:attribute name="id" type="xs:integer"/>
 						</xs:complexType>
 					</xs:element>
-					<xs:element name="creature">
+					<xs:element name="creature" minOccurs="0">
 						<xs:complexType>
 							<xs:all>
 								<xs:element name="type" type="xs:integer"/>

src/classes/estreams.cpp

@@ -596,3 +596,23 @@ std::istream& operator>> (std::istream& in, eLighting& light) {
 		in.setstate(std::ios::failbit);
 	return in;
 }
+
+// MARK: eTalkNode
+
+cEnumLookup talk_nodes = {
+	"reg","if-sdf","set-sdf","inn","if-time","if-event","if-town","shop","train","jobs",
+	"","","","sell-weap","sell-prot","sell-any","id","ench","buy-info","buy-sdf",
+	"buy-ship","buy-horse","buy-spec-item","quest","buy-town","end-force","end-fight","end-alarm","end-die","call-local",
+	"call-global",
+};
+
+std::ostream& operator<< (std::ostream& out, eTalkNode node) {
+	writeEnum(out, node, talk_nodes, "reg");
+	return out;
+}
+
+std::istream& operator>> (std::istream& in, eTalkNode& node) {
+	if(!readEnum(in, node, talk_nodes, eTalkNode::REGULAR))
+		in.setstate(std::ios::failbit);
+	return in;
+}

src/classes/talking.hpp

@@ -54,4 +54,7 @@ public:
 	void writeTo(std::ostream& file) const;
 };
 
+std::ostream& operator<< (std::ostream& out, eTalkNode node);
+std::istream& operator>> (std::istream& in, eTalkNode& node);
+
 #endif

src/scenedit/scen.fileio.cpp

@@ -786,9 +786,9 @@ static void writeDialogueToXml(ticpp::Printer&& data, cSpeech& talk, int town_nu
 		data.OpenElement("personality");
 		data.PushAttribute("id", i + 10 * town_num);
 		data.PushElement("title", who.title);
-		data.PushElement("look", who.look, true);
-		data.PushElement("name", who.name, true);
-		data.PushElement("job", who.job, true);
+		data.PushElement("look", who.look, !who.look.empty());
+		data.PushElement("name", who.name, !who.look.empty());
+		data.PushElement("job", who.job, !who.look.empty());
 		if(!who.dunno.empty())
 			data.PushElement("unknown", who.dunno, true);
 		data.CloseElement("personality");
@@ -805,7 +805,7 @@ static void writeDialogueToXml(ticpp::Printer&& data, cSpeech& talk, int town_nu
 			data.PushElement("keyword", std::string(node.link1, 4));
 		if(std::string(node.link2, 4) != "xxxx")
 			data.PushElement("keyword", std::string(node.link2, 4));
-		data.PushElement("type", int(node.type));
+		data.PushElement("type", node.type);
 		if(node.extras[0] >= 0 || node.extras[1] >= 0 || node.extras[2] >= 0 || node.extras[3] >= 0)
 			data.PushElement("param", node.extras[0]);
 		if(node.extras[1] >= 0 || node.extras[2] >= 0 || node.extras[3] >= 0)

src/tools/fileio_scen.cpp

@@ -1789,9 +1789,7 @@ static void readDialogueFromXml(ticpp::Document&& data, cSpeech& talk, int town_
 					else throw xBadNode(type, node->Row(), node->Column(), fname);
 					num_keys++;
 				} else if(type == "type") {
-					int type;
-					node->GetText(&type);
-					talk.talk_nodes[num_nodes].type = eTalkNode(type);
+					node->GetText(&talk.talk_nodes[num_nodes].type);
 					got_type = true;
 				} else if(type == "param") {
 					if(num_params >= 4)