Persistent Coins (#1405)

On Coin Insert, a file Save/Coin.ini is created if it does not exist, which stores the number of coins currrently in m_iCoins. Whenever m_iCoins is update, the Coin.ini is updated.

On boot, Coin.ini is read and m_iCoins is set to that value. If coins in coin.ini file is greater then MAX_NUM_CREDITS then reset the value to 0.

src/GameState.cpp

@@ -514,6 +514,9 @@ namespace
 
 		GAMESTATE->JoinPlayer( pn );
 
+		// On Join, make sure to update Coins File
+		BOOKKEEPER->WriteCoinsFile(GAMESTATE->m_iCoins.Get());
+
 		return true;
 	}
 };