Aufgabe 2.2 - Vector2D constructor

src/break_out/model/Vector2D.java

@@ -32,6 +32,18 @@ public class Vector2D implements IVector2D {
 		this.dy = dy;
 	}
 
+	/**
+	 * This constructor creates a new vector based on the given positions start and end.
+	 *
+	 * @param start first position
+	 * @param end second position
+	 */
+	public Vector2D(Position start, Position end) {
+		// vector(AB) = (B.x - A.x, B.y - A.y)
+		this.dx = end.getX() - start.getX();
+		this.dy = end.getY() - start.getY();
+	}
+
 	/**
 	 * Getter for the dx-part
 	 *