Introduced CoinType for transfer between different currencies

src/de/banananetwork/dsa/currencies/CoinType.java

@@ -0,0 +1,34 @@
+package de.banananetwork.dsa.currencies;
+
+public enum CoinType {
+	// TODO Transfer from constant values to variable ones
+	// TODO Add some other currencies (https://de.wiki-aventurica.de/wiki/Aventurische_W%C3%A4hrungen)
+	MITTELREICH_KREUZER(1), // Base Value
+	MITTELREICH_NICKEL(2),
+	MITTELREICH_HELLER(10),
+	MITTELREICH_SILBERTALER(MITTELREICH_HELLER, 10),
+	MITTELREICH_DUKATEN(MITTELREICH_SILBERTALER, 10);
+
+	private final int multiplier;
+
+	CoinType(int multiplier) {
+		this.multiplier = multiplier;
+	}
+
+	CoinType(CoinType reference, int multiplier) {
+		this.multiplier = reference.multiplier * multiplier;
+	}
+
+	public int transferTo(int baseValue) {
+		return baseValue / multiplier;
+	}
+
+	public double transferToExact(int baseValue) {
+		return (double) baseValue / multiplier;
+	}
+
+	public int transferFrom(int coinValue) {
+		return coinValue * multiplier;
+	}
+
+}