Scaffold for dialog previews in the scen editor

src/scenario/special-oneshot.cpp

@@ -37,7 +37,8 @@ namespace {
 		.ex1a(STRT_BUTTON)
 		.ex2a(STRT_BUTTON)
 		.ex1b(eSpecPicker::NODE)
-		.ex2b(eSpecPicker::NODE);
+		.ex2b(eSpecPicker::NODE)
+		.preview();
 	node_properties_t S_ITEM_DIALOG = node_builder_t(eSpecType::ONCE_GIVE_ITEM_DIALOG)
 		.sdf()
 		.msg()

src/scenario/special.cpp

@@ -575,6 +575,7 @@ bool node_category_info_t::contains(eSpecType spec) const {
 node_properties_t::node_properties_t(eSpecType type)
 	: self(type)
 	, cat(getNodeCategory(type))
+	, can_preview(false)
 {
 	set(eSpecField::JUMP, eSpecPicker::NODE);
 }
@@ -872,6 +873,11 @@ node_builder_t& node_builder_t::loc(eSpecField a, eSpecField b, eLocType type, e
 	return *this;
 }
 
+node_builder_t& node_builder_t::preview() {
+	node.can_preview = true;
+	return *this;
+}
+
 node_builder_t::operator node_properties_t() {
 	std::map<eSpecType, node_properties_t>& allNodeProps = nodeProps();
 	allNodeProps.emplace(node.self, node);

src/scenario/special.hpp

@@ -213,6 +213,7 @@ struct node_properties_t {
 	node_function_t ex1a(const cSpecial&) const, ex1b(const cSpecial&) const, ex1c(const cSpecial&) const;
 	node_function_t ex2a(const cSpecial&) const, ex2b(const cSpecial&) const, ex2c(const cSpecial&) const;
 	node_properties_t() : node_properties_t(eSpecType::INVALID) {}
+	bool can_preview;
 private:
 	node_properties_t(eSpecType type);
 	node_function_t get(const cSpecial& spec, eSpecField fld) const;
@@ -267,6 +268,8 @@ struct node_builder_t {
 	node_builder_t& loc(eSpecField a, eSpecField b, eLocType type);
 	// As above, but also notes that the area the location is in will be specified by the indicated field.
 	node_builder_t& loc(eSpecField a, eSpecField b, eLocType type, eSpecField where);
+	// Specifies that the node defines a dialog which can be previewed
+	node_builder_t& preview();
 	node_condition_builder_t when(node_condition_t cond, int lbl_sub);
 	operator node_properties_t();
 private: