Added Sinus Mover

src/awlex/ospu/movers/SinusMover.java

@@ -0,0 +1,38 @@
+package awlex.ospu.movers;
+
+import itdelatrisu.opsu.Utils;
+import itdelatrisu.opsu.objects.GameObject;
+import yugecin.opsudance.movers.Mover;
+
+/**
+ * Created by Awlex on 27.10.2016.
+ */
+public class SinusMover extends Mover {
+
+	private double angle;
+	private double radius;
+	private double amplitude;
+
+	public SinusMover(GameObject start, GameObject end, int dir) {
+		super(start, end, dir);
+		angle = Math.atan2(endY - startY, endX - startX);
+		radius = Utils.distance(startX, startY, endX, endY);
+		amplitude = radius / 4;
+		this.dir = angle < 180 ? dir : -dir;
+	}
+
+	@Override
+	public double[] getPointAt(int time) {
+		double x = radius * getT(time);
+		double y = amplitude * Math.sin(2d * Math.PI * getT(time)) * dir;
+		return new double[]{
+			startX + x * Math.cos(angle) - y * Math.sin(angle),
+			startY + x * Math.sin(angle) + y * Math.cos(angle)
+		};
+	}
+
+	@Override
+	public String getName() {
+		return "Sinustic";
+	}
+}