migrating save files

include/td/game/Team.h

@@ -31,23 +31,17 @@ class Team;
 
 class TeamCastle : public utils::shape::Rectangle {
 private:
-	const Team* m_Team;
 	float m_Life;
 public:
 	static constexpr int CastleMaxLife = 1000;
 
-	TeamCastle(const Team* team) : m_Team(team), m_Life(CastleMaxLife) {
+	TeamCastle() : m_Life(CastleMaxLife) {
 		SetWidth(5);
 		SetHeight(5);
 	}
 
-	TeamCastle() : TeamCastle(nullptr) {}
-
 	float GetLife() const { return m_Life; }
 
-	const Team* GetTeam() const { return m_Team; }
-	void SetTeam(const Team* team) { m_Team = team; }
-
 	void SetLife(float life) { m_Life = life; }
 	void Damage(float damage) { m_Life = std::max(0.0f, m_Life - damage); }