make it work

src/yugecin/opsudance/movers/slidermovers/DefaultSliderMoverController.java

@@ -22,17 +22,16 @@ import itdelatrisu.opsu.objects.GameObject;
 public class DefaultSliderMoverController implements SliderMoverController {
 
 	@Override
-	public GameObject process(GameObject obj) {
-		return obj;
-	}
-
-	@Override
-	public GameObject processNext(int time) {
-		return null;
+	public GameObject[] process(GameObject p, GameObject c, int time) {
+		return new GameObject[] {
+			p,
+			c
+		};
 	}
 
 	@Override
 	public String toString() {
 		return "Nothing special, just follow it";
 	}
+
 }

src/yugecin/opsudance/movers/slidermovers/InheritedSliderMoverController.java

@@ -17,18 +17,41 @@
  */
 package yugecin.opsudance.movers.slidermovers;
 
+import itdelatrisu.opsu.objects.Circle;
 import itdelatrisu.opsu.objects.GameObject;
+import itdelatrisu.opsu.objects.Slider;
 
 public class InheritedSliderMoverController implements SliderMoverController {
 
-	@Override
-	public GameObject process(GameObject obj) {
-		return obj;
-	}
+	private GameObject currentSlider;
+	private Circle[] positions;
+	private int idx;
 
 	@Override
-	public GameObject processNext(int time) {
-		return null;
+	public GameObject[] process(GameObject p, GameObject c, int time) {
+		GameObject[] ret = new GameObject[2];
+		if (!c.isSlider()) {
+			ret[0] = p;
+			ret[1] = c;
+			return ret;
+		}
+		if (currentSlider != c) {
+			currentSlider = c;
+			positions = ((Slider) c).getTickPositionCircles();
+			idx = 0;
+		}
+		for (; idx < positions.length; idx++) {
+			if (time < positions[idx].getTime() || idx == positions.length - 1) {
+				ret[1] = positions[idx];
+				if (idx == 0) {
+					ret[0] = p;
+				} else {
+					ret[0] = positions[idx - 1];
+				}
+				return ret;
+			}
+		}
+		return null; // make the compiler happy c:
 	}
 
 	@Override

src/yugecin/opsudance/movers/slidermovers/SliderMoverController.java

@@ -21,7 +21,6 @@ import itdelatrisu.opsu.objects.GameObject;
 
 public interface SliderMoverController {
 
-	GameObject process(GameObject obj);
-	GameObject processNext(int time);
+	GameObject[] process(GameObject p, GameObject c, int time);
 
 }