first commit

Minecraft.World/PlayerIO.h

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+#pragma once
+using namespace std;
+
+// If we have more than MAX_PLAYER_DATA_SAVES player.dat's then we delete the oldest ones
+// This value can be no higher than MAXIMUM_MAP_SAVE_DATA/3 (3 being the number of dimensions in future versions)
+#define MAX_PLAYER_DATA_SAVES 80
+
+class Player;
+
+class PlayerIO 
+{
+public:
+	virtual void save(shared_ptr<Player> player) = 0;
+	virtual bool load(shared_ptr<Player> player) = 0;  // 4J Changed return val to bool to check if new player or loaded player
+	virtual CompoundTag *loadPlayerDataTag(PlayerUID xuid) = 0; // 4J Changed from string name to xuid
+
+	// 4J Added
+	virtual void clearOldPlayerFiles() = 0;
+	virtual void saveMapIdLookup() = 0;
+	virtual void deleteMapFilesForPlayer(shared_ptr<Player> player) = 0;
+	virtual void saveAllCachedData() = 0;
+};