feat(persons): Add formation patterns for person ships (endless-sky#1…

…0377)

source/Person.cpp

@@ -16,6 +16,7 @@ this program. If not, see <https://www.gnu.org/licenses/>.
 #include "Person.h"
 
 #include "DataNode.h"
+#include "FormationPattern.h"
 #include "GameData.h"
 #include "Government.h"
 #include "Ship.h"
@@ -33,6 +34,8 @@ void Person::Load(const DataNode &node)
 			location.Load(child);
 		else if(child.Token(0) == "frequency" && child.Size() >= 2)
 			frequency = child.Value(1);
+		else if(child.Token(0) == "formation" && child.Size() >= 2)
+			formationPattern = GameData::Formations().Get(child.Token(1));
 		else if(child.Token(0) == "ship" && child.Size() >= 2)
 		{
 			// Name ships that are not the flagship with the name provided, if any.
@@ -59,7 +62,11 @@ void Person::Load(const DataNode &node)
 void Person::FinishLoading()
 {
 	for(const shared_ptr<Ship> &ship : ships)
+	{
 		ship->FinishLoading(true);
+		if(formationPattern)
+			ship->SetFormationPattern(formationPattern);
+	}
 }
 
 

source/Person.h

@@ -23,6 +23,7 @@ this program. If not, see <https://www.gnu.org/licenses/>.
 #include <memory>
 
 class DataNode;
+class FormationPattern;
 class Government;
 class Ship;
 class System;
@@ -65,6 +66,7 @@ class Person {
 	int frequency = 100;
 
 	std::list<std::shared_ptr<Ship>> ships;
+	const FormationPattern *formationPattern = nullptr;
 	const Government *government = nullptr;
 	Personality personality;
 	Phrase hail;