Merge branch 'pullreqs'

pom.xml

@@ -36,8 +36,8 @@
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.2</version>
 				<configuration>
-					<source>1.7</source>
+					<source>1.8</source>
-					<target>1.7</target>
+					<target>1.8</target>
 					<encoding>UTF-8</encoding>
 				</configuration>
 			</plugin>
@@ -209,5 +209,10 @@
 			<artifactId>lzma-java</artifactId>
 			<version>1.3</version>
 		</dependency>
+        <dependency>
+            <groupId>gov.nist.math</groupId>
+            <artifactId>jama</artifactId>
+            <version>1.0.3</version>
+        </dependency>
 	</dependencies>
 </project>

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";
+	}
+}

src/awlex/ospu/polymover/ArcMover.java

@@ -0,0 +1,106 @@
+package awlex.ospu.polymover;
+
+import Jama.Matrix;
+import itdelatrisu.opsu.objects.Circle;
+import itdelatrisu.opsu.objects.GameObject;
+import itdelatrisu.opsu.objects.Slider;
+
+import static java.lang.Math.*;
+
+/**
+ * Created by Awlex on 13.11.2016.
+ */
+public class ArcMover implements PolyMover {
+
+	public static final int ITEMS_NEEDED = 3;
+	private GameObject p1, middle, p2;
+	private double xm, ym, r, alpha, beta, gamma;
+	
+	public ArcMover(GameObject p1, GameObject middle, GameObject p2) {
+		this.p1 = p1;
+		this.middle = middle;
+		this.p2 = p2;
+		init();
+	}
+	
+	private void init() {
+		Matrix m = prepareMatrix(p1, middle, p2);
+		xm = m.get(1, 0) * 0.5;
+		ym = m.get(2, 0) * 0.5;
+		r = sqrt(pow(xm, 2) + pow(ym, 2) - m.get(0, 0));
+		alpha = atan2(p1.end.y - ym, p1.end.x - xm);
+		beta = atan2(middle.start.y - ym, middle.start.x - xm);
+		gamma = atan2(p2.start.y - ym, p2.start.x - xm);
+	}
+	
+	@Override
+	public double[] getPointAt(int time) {
+		double angle;
+		if (time < middle.getTime()) {
+			double percent = ((double) time - p1.getEndTime()) / ((middle.getTime() - p1.getEndTime()));
+			angle = alpha + (beta - alpha) * percent;
+		}
+		else {
+			angle = beta + (gamma - beta) * ((double) time - middle.getTime()) / (p2.getTime() - middle.getTime());
+		}
+		return new double[]{
+			xm + r * cos(angle),
+			ym + r * sin(angle)
+		};
+	}
+	
+	@Override
+	public GameObject[] getItems() {
+		return new GameObject[]{
+			p1,
+			middle,
+			p2
+		};
+	}
+
+	private static Matrix prepareMatrix(GameObject p1, GameObject middle, GameObject p2) {
+		Matrix a, b;
+
+		//if (!p2.isSlider()) {
+			a = new Matrix(new double[][]{
+				{1, -p1.end.x, -p1.end.y},
+				{1, -middle.start.x, -middle.start.y},
+				{1, -p2.start.x, -p2.start.y}
+			});
+			b = new Matrix(new double[][]{
+				{-(pow(p1.end.x, 2) + pow(p1.end.y, 2))},
+				{-(pow(middle.start.x, 2) + pow(middle.start.y, 2))},
+				{-(pow(p2.start.x, 2) + pow(p2.start.y, 2))},
+			});
+		/*
+		} else {
+			Circle c = ((Slider) p2).getTickPositionCircles()[0];
+			a = new Matrix(new double[][]{
+				{1, -p1.end.x, -p1.end.y},
+				{1, -middle.start.x, -middle.start.y},
+				{1, -c.start.x, -c.start.y}
+			});
+			b = new Matrix(new double[][]{
+				{-(pow(p1.end.x, 2) + pow(p1.end.y, 2))},
+				{-(pow(middle.start.x, 2) + pow(middle.start.y, 2))},
+				{-(pow(c.start.x, 2) + pow(c.start.y, 2))},
+			});
+		}
+		*/
+		return a.solve(b);
+	}
+	
+	public static boolean canCricleExistBetweenItems(GameObject p1, GameObject p2, GameObject p3) {
+		try {
+			prepareMatrix(p1, p2, p3);
+		} catch (RuntimeException e) {
+			return false;
+		}
+		return true;
+	}
+
+	@Override
+	public GameObject getLastItem() {
+		return p2;
+	}
+}

src/awlex/ospu/polymover/LineMover.java

@@ -0,0 +1,55 @@
+package awlex.ospu.polymover;
+
+import itdelatrisu.opsu.objects.DummyObject;
+import itdelatrisu.opsu.objects.GameObject;
+import itdelatrisu.opsu.states.Game;
+import yugecin.opsudance.movers.LinearMover;
+
+import java.util.Arrays;
+
+/**
+ * Created by Awlex on 19.11.2016.
+ */
+public class LineMover implements PolyMover {
+
+	public static final int ITEMS_NEEDED = 2;
+
+	private GameObject[] objects;
+	private LinearMover m;
+	private int currentIndex;
+
+	
+	public LineMover(GameObject[] objects, int startIndex, int count) {
+		this.objects = objects;
+		m = new LinearMover(objects[startIndex], objects[startIndex + 1], 1);
+		currentIndex = startIndex + 1;
+	}
+
+	public LineMover(GameObject[] objects, int count) {
+		this(objects, 0, count);
+	}
+
+	@Override
+	public double[] getPointAt(int time) {
+		if (objects[currentIndex].getEndTime() < time)
+			m = new LinearMover(objects[currentIndex], objects[currentIndex + 1], 1);
+		return m.getPointAt(time);
+	}
+	
+	@Override
+	public GameObject[] getItems() {
+		return objects;
+	}
+
+	@Override
+	public GameObject getLastItem() {
+		int i = objects.length - 1;
+		while (i > 0) {
+			if (objects[i] != null) {
+				break;
+			}
+			i--;
+		}
+		return objects[i];
+	}
+}

src/awlex/ospu/polymover/PolyMover.java

@@ -0,0 +1,15 @@
+package awlex.ospu.polymover;
+
+import itdelatrisu.opsu.objects.GameObject;
+
+/**
+ * Created by Awlex on 18.11.2016.
+ */
+public interface PolyMover {
+
+	double[] getPointAt(int time);
+
+	GameObject[] getItems();
+
+	GameObject getLastItem();
+}

src/awlex/ospu/polymover/factory/ArcFactory.java

@@ -0,0 +1,40 @@
+package awlex.ospu.polymover.factory;
+
+import awlex.ospu.polymover.ArcMover;
+import awlex.ospu.polymover.LineMover;
+import awlex.ospu.polymover.PolyMover;
+import itdelatrisu.opsu.objects.DummyObject;
+import itdelatrisu.opsu.objects.GameObject;
+
+import java.util.Arrays;
+
+/**
+ * Created by Awlex on 18.11.2016.
+ */
+public class ArcFactory extends PolyMoverFactory {
+
+	private static final int PREFFERED_BUFFER_SIZE = 3;
+
+	public void init(GameObject[] objects, int count) {
+		if (count < 3 || (!ArcMover.canCricleExistBetweenItems(objects[0], objects[1], objects[2])))
+			addMover(new LineMover(objects, 3));
+		else
+			addMover(new ArcMover(objects[0], objects[1], objects[2]));
+	}
+
+	@Override
+	public int getMaxBufferSize() {
+		return ArcMover.ITEMS_NEEDED;
+	}
+
+	@Override
+	public int getMinBufferSize() {
+		return LineMover.ITEMS_NEEDED;
+	}
+
+	@Override
+	public String toString() {
+		return "Arcs";
+	}
+
+}

src/awlex/ospu/polymover/factory/LinearFactory.java

@@ -0,0 +1,38 @@
+package awlex.ospu.polymover.factory;
+
+import awlex.ospu.polymover.LineMover;
+import itdelatrisu.opsu.objects.GameObject;
+
+/**
+ * Created by Awlex on 20.11.2016.
+ */
+public class LinearFactory extends PolyMoverFactory {
+
+	public final static int PREFFERED_BUFFER_SIZE = 2;
+
+	@Override
+	public double[] getPointAt(int time) {
+		return getCurrent().getPointAt(time);
+	}
+
+	@Override
+	public void init(GameObject[] objects, int count) {
+		addMover(new LineMover(objects, count));
+	}
+
+	@Override
+	public int getMaxBufferSize() {
+		return LineMover.ITEMS_NEEDED;
+	}
+
+	@Override
+	public int getMinBufferSize() {
+		return LineMover.ITEMS_NEEDED;
+	}
+
+
+	@Override
+	public String toString() {
+		return "Linear";
+	}
+}

src/awlex/ospu/polymover/factory/PolyMoverFactory.java

@@ -0,0 +1,132 @@
+package awlex.ospu.polymover.factory;
+
+import awlex.ospu.polymover.LineMover;
+import awlex.ospu.polymover.PolyMover;
+import itdelatrisu.opsu.objects.GameObject;
+import yugecin.opsudance.Dancer;
+import yugecin.opsudance.movers.Mover;
+import yugecin.opsudance.movers.factories.MoverFactory;
+
+import java.util.LinkedList;
+import java.util.List;
+
+/**
+ * Created by Awlex on 18.11.2016.
+ */
+public abstract class PolyMoverFactory implements MoverFactory {
+
+	private LinkedList<PolyMover> movers;
+	private int latestIndex;
+
+	public PolyMoverFactory() {
+		movers = new LinkedList<>();
+	}
+
+	/**
+	 * @param time point in time whose cursor position has to be calculated
+	 * @return [x, y]
+	 */
+	public double[] getPointAt(int time) {
+		double[] ret = new double[2];
+		int i = 0;
+		while (i < movers.size()) {
+			if (movers.get(i).getLastItem().getEndTime() < time)
+				break;
+			double[] point = movers.get(i).getPointAt(time);
+			ret[0] += point[0];
+			ret[1] += point[1];
+			i++;
+		}
+		ret[0] /= i;
+		ret[1] /= i;
+		return ret;
+	}
+
+	@Override
+	public Mover create(GameObject start, GameObject end, int dir) {
+		throw new UnsupportedOperationException("Polymovers should use the create variant with all the gameobjects + startindex");
+	}
+
+	@Override
+	public boolean isMultiPoint() {
+		return true;
+	}
+
+	public final void create(GameObject[] objects, int startIndex) {
+		if (latestIndex <= startIndex) {
+			movers.clear();
+		}
+		GameObject[] items = new GameObject[getMaxBufferSize()];
+		int i = 1;
+		items[0] = startIndex == -1 ? Dancer.d : objects[startIndex];
+		while (i < items.length - 1) {
+			GameObject g = objects[startIndex + i];
+			if (g.isSlider() || g.isSpinner())
+				break;
+			items[i++] = g;
+		}
+		items[i] = objects[startIndex + i];
+		latestIndex = startIndex + getMaxBufferSize() + i - items.length;
+		if (++i >= getMinBufferSize()) {
+			init(items, i);
+		}
+		else {
+			addMover(new LineMover(objects, startIndex + 1, i));
+		}
+	}
+
+	protected abstract void init(GameObject[] objects, int count);
+
+	public final void update(GameObject g) {
+		GameObject[] items = movers.get(movers.size() - 1).getItems();
+		if (items[items.length - 1] != g) {
+			System.arraycopy(items, 1, items, 0, items.length - 1);
+			items[items.length - 1] = g;
+			create(items, 0);
+			latestIndex++;
+		}
+	}
+
+	/**
+	 * How many items the Factory would like to look in the future at most
+	 *
+	 * @return
+	 */
+	public abstract int getMaxBufferSize();
+
+	/**
+	 * How many items the Factory would like to look in the future at least
+	 *
+	 * @return
+	 */
+	public abstract int getMinBufferSize();
+
+
+	public boolean isInitialized() {
+		return movers.isEmpty();
+	}
+
+	protected PolyMover getCurrent() {
+		return movers.peekLast();
+	}
+
+	protected List<PolyMover> getMovers() {
+		return movers;
+	}
+
+	/**
+	 * Adds a Mover to the end of the list. It will also remove the first mover, if the list is bigger than the buffersize.
+	 *
+	 * @param mover the mover to be added
+	 */
+	protected void addMover(PolyMover mover) {
+		movers.add(mover);
+		if (movers.size() >= getMaxBufferSize())
+			movers.remove();
+	}
+
+	public int getLatestIndex() {
+		return latestIndex;
+	}
+
+}

src/itdelatrisu/opsu/Options.java

@@ -613,12 +613,13 @@ public class Options {
 
 			@Override
 			public String write() {
-				return Dancer.instance.getMoverFactoryIndex() + "";
+				return String.valueOf(Dancer.instance.getMoverFactoryIndex());
 			}
 
 			@Override
 			public void read(String s) {
-				Dancer.instance.setMoverFactoryIndex(Integer.parseInt(s));
+				int i = Integer.parseInt(s);
+				Dancer.instance.setMoverFactoryIndex(i);
 			}
 		},
 

src/itdelatrisu/opsu/states/Game.java

@@ -328,6 +328,7 @@ public class Game extends BasicGameState {
 				objectIndex++;
 			}
 			objectIndex--;
+			Dancer.instance.setObjectIndex(objectIndex);
 			sbOverlay.updateIndex(objectIndex);
 			lastReplayTime = beatmap.objects[objectIndex].getTime();
 		} catch (SlickException e) {
@@ -424,53 +425,13 @@ public class Game extends BasicGameState {
 		autoMousePressed = false;
 		if (GameMod.AUTO.isActive() || GameMod.AUTOPILOT.isActive()) {
 			Vec2f autoPoint;
-			if (objectIndex < beatmap.objects.length) {
+			if (objectIndex < beatmap.objects.length - Dancer.instance.getPolyMoverFactoryMinBufferSize()) {
-				GameObject p;
-				if (objectIndex > 0) {
-					p = gameObjects[objectIndex - 1];
-				} else {
-					p = Dancer.d;
-				}
 				Dancer d = Dancer.instance;
-				d.update(trackPosition, p, gameObjects[objectIndex]);
+				d.update(trackPosition, objectIndex);
 				autoPoint = new Vec2f(d.x, d.y);
 				if (trackPosition < gameObjects[objectIndex].getTime()) {
 					autoMousePressed = true;
 				}
-				/*
-				// normal object
-				int objectTime = beatmap.objects[objectIndex].getTime();
-				if (trackPosition < objectTime) {
-					Vec2f startPoint = gameObjects[objectIndex - 1].getPointAt(trackPosition);
-					int startTime = gameObjects[objectIndex - 1].getEndTime();
-					if (beatmap.breaks != null && breakIndex < beatmap.breaks.size()) {
-						// starting a break: keep cursor at previous hit object position
-						if (breakTime > 0 || objectTime > beatmap.breaks.get(breakIndex))
-							autoPoint = startPoint;
-
-						// after a break ends: move startTime to break end time
-						else if (breakIndex > 1) {
-							int lastBreakEndTime = beatmap.breaks.get(breakIndex - 1);
-							if (objectTime > lastBreakEndTime && startTime < lastBreakEndTime)
-								startTime = lastBreakEndTime;
-						}
-					}
-					if (autoPoint == null) {
-						Vec2f endPoint = gameObjects[objectIndex].getPointAt(trackPosition);
-						int totalTime = objectTime - startTime;
-						autoPoint = getPointAt(startPoint.x, startPoint.y, endPoint.x, endPoint.y, (float) (trackPosition - startTime) / totalTime);
-
-						// hit circles: show a mouse press
-						int offset300 = hitResultOffset[GameData.HIT_300];
-						if ((beatmap.objects[objectIndex].isCircle() && objectTime - trackPosition < offset300) ||
-						    (beatmap.objects[objectIndex - 1].isCircle() && trackPosition - beatmap.objects[objectIndex - 1].getTime() < offset300))
-							autoMousePressed = true;
-					}
-				} else {
-					autoPoint = gameObjects[objectIndex].getPointAt(trackPosition);
-					autoMousePressed = true;
-				}
-				*/
 			} else {
 				// last object
 				autoPoint = gameObjects[objectIndex - 1].getPointAt(trackPosition);
@@ -1490,6 +1451,7 @@ public class Game extends BasicGameState {
 		}
 
 
+		Dancer.instance.setGameObjects(gameObjects);
 		sbOverlay.setGameObjects(gameObjects);
 		if (!checkpointLoaded) {
 			sbOverlay.enter();
@@ -1512,6 +1474,7 @@ public class Game extends BasicGameState {
 //		container.setMouseGrabbed(false);
 
 		sbOverlay.leave();
+		Dancer.instance.setGameObjects(null);
 
 		Cursor.lastObjColor = Color.white;
 		Cursor.lastMirroredObjColor = Color.white;

src/yugecin/opsudance/Dancer.java

@@ -19,6 +19,10 @@ package yugecin.opsudance;
 
 import awlex.ospu.movers.factories.CenterSpiralMoverFactory;
 import awlex.ospu.movers.factories.SpiralMoverFactory;
+import awlex.ospu.polymover.PolyMover;
+import awlex.ospu.polymover.factory.ArcFactory;
+import awlex.ospu.polymover.factory.LinearFactory;
+import awlex.ospu.polymover.factory.PolyMoverFactory;
 import awlex.ospu.spinners.SpiralSpinner;
 import itdelatrisu.opsu.Options;
 import itdelatrisu.opsu.Utils;
@@ -37,7 +41,7 @@ import yugecin.opsudance.spinners.*;
 
 public class Dancer {
 
-	public static MoverFactory[] moverFactories = new MoverFactory[] {
+	public static MoverFactory[] moverFactories = new MoverFactory[]{
 		new AutoMoverFactory(),
 		new AutoEllipseMoverFactory(),
 		new CircleMoverFactory(),
@@ -49,9 +53,11 @@ public class Dancer {
 		new QuartCircleMoverFactory(),
 		new SpiralMoverFactory(),
 		new CenterSpiralMoverFactory(),
+		new LinearFactory(),
+		new ArcFactory(),
 	};
 
-	public static Spinner[] spinners = new Spinner[] {
+	public static Spinner[] spinners = new Spinner[]{
 		new RektSpinner(),
 		new BeamSpinner(),
 		new CircleSpinner(),
@@ -65,13 +71,14 @@ public class Dancer {
 		new SpiralSpinner(),
 	};
 
-	public static SliderMoverController[] sliderMovers = new SliderMoverController[] {
+	public static SliderMoverController[] sliderMovers = new SliderMoverController[]{
 		new DefaultSliderMoverController(),
 		new InheritedSliderMoverController(),
 	};
 
 	public static Dancer instance = new Dancer();
 
+	public static boolean multipoint = false;
 	public static boolean mirror = false; // this should really get its own place somewhere...
 	public static boolean drawApproach = true; // this should really get its own place somewhere...
 	public static boolean removebg = true; // this should really get its own place somewhere...
@@ -90,7 +97,9 @@ public class Dancer {
 
 	private int dir;
 	public static final GameObject d = new DummyObject();
-	private GameObject p;
+
+	private GameObject[] gameObjects;
+	private int objectIndex;
 
 	private MoverFactory moverFactory;
 	private Mover mover;
@@ -115,7 +124,7 @@ public class Dancer {
 
 	public void reset() {
 		isCurrentLazySlider = false;
-		p = null;
+		objectIndex = -1;
 		dir = 1;
 		for (Spinner s : spinners) {
 			s.init();
@@ -144,15 +153,44 @@ public class Dancer {
 		}
 		this.moverFactoryIndex = moverFactoryIndex;
 		moverFactory = moverFactories[moverFactoryIndex];
+		multipoint = moverFactory.isMultiPoint();
+		// to prevent crashes when changing mover in storyboard, create mover now
+		createNewMover();
 	}
 
-	public void update(int time, GameObject p, GameObject c) {
+	public int getPolyMoverFactoryMinBufferSize() {
+		if (!multipoint) {
+			return 0;
+		}
+		return ((PolyMoverFactory) moverFactory).getMinBufferSize();
+	}
+
+	public void setGameObjects(GameObject[] objs) {
+		this.gameObjects = objs;
+	}
+
+	public void setObjectIndex(int objectIndex) {
+		this.objectIndex = objectIndex;
+		// storyboard
+		createNewMover();
+	}
+
+	public void update(int time, int objectIndex) {
+		GameObject p;
+		if (objectIndex == 0) {
+			p = d;
+		} else {
+			p = gameObjects[objectIndex - 1];
+		}
+		GameObject c = gameObjects[objectIndex];
+		if (!multipoint) {
 			GameObject[] e = sliderMoverController.process(p, c, time);
 			p = e[0];
 			c = e[1];
-		if (this.p != p) {
+		}
-			this.p = p;
+		if (this.objectIndex != objectIndex) {
-			if (this.p == d) {
+			this.objectIndex = objectIndex;
+			if (objectIndex == 0) {
 				if (c.isSpinner()) {
 					double[] spinnerStartPoint = spinner.getPoint();
 					c.start.set((float) spinnerStartPoint[0], (float) spinnerStartPoint[1]);
@@ -175,16 +213,18 @@ public class Dancer {
 				double[] spinnerStartPoint = spinner.getPoint();
 				c.start = new Vec2f((float) spinnerStartPoint[0], (float) spinnerStartPoint[1]);
 			}
-			if (p == d) {
+
-				mover = new LinearMover(p, c, dir);
+			createNewMover();
-			} else {
-				mover = moverFactory.create(p, c, dir);
-			}
 		}
 
 		if (time < c.getTime()) {
 			if (!p.isSpinner() || !c.isSpinner()) {
-				double[] point = mover.getPointAt(time);
+				double[] point;
+				if (multipoint) {
+					point = ((PolyMoverFactory) moverFactory).getPointAt(time);
+				} else {
+					point = mover.getPointAt(time);
+				}
 				x = (float) point[0];
 				y = (float) point[1];
 			}
@@ -209,4 +249,30 @@ public class Dancer {
 		y = Utils.clamp(y, 10, Options.height - 10);
 	}
 
+	private void createNewMover() {
+		if (gameObjects == null) {
+			return;
+		}
+		if (objectIndex < 0) {
+			objectIndex = 0;
+		}
+		GameObject c = gameObjects[objectIndex];
+		if (multipoint) {
+			PolyMoverFactory pmf = (PolyMoverFactory) moverFactory;
+			if (pmf.isInitialized() && pmf.getLatestIndex() < objectIndex + pmf.getLatestIndex() - 1) {
+				pmf.update(gameObjects[objectIndex + pmf.getMaxBufferSize() - 1]);
+			} else {
+				pmf.create(gameObjects, objectIndex - 1);
+			}
+			return;
+		}
+		if (mover == null || mover.getEnd() != c) {
+			if (objectIndex == 0) {
+				mover = new LinearMover(d, c, dir);
+			} else {
+				mover = moverFactory.create(gameObjects[objectIndex - 1], c, dir);
+			}
+		}
+	}
+
 }

src/yugecin/opsudance/movers/Mover.java

@@ -32,6 +32,8 @@ public abstract class Mover {
 	protected double endX;
 	protected double endY;
 	
+	private GameObject end;
+
 	public Mover(GameObject start, GameObject end, int dir) {
 		this.dir = dir;
 		this.startX = start.end.x;
@@ -40,6 +42,7 @@ public abstract class Mover {
 		this.endY = end.start.y;
 		this.startT = start.getEndTime();
 		this.totalT = end.getTime() - startT;
+		this.end = end;
 	}
 
 	protected final double getT(int time) {
@@ -49,4 +52,7 @@ public abstract class Mover {
 	public abstract double[] getPointAt(int time);
 	public abstract String getName();
 	
+	public GameObject getEnd() {
+		return end;
+	}
 }

src/yugecin/opsudance/movers/factories/MoverFactory.java

@@ -24,4 +24,8 @@ public interface MoverFactory {
 
 	Mover create(GameObject start, GameObject end, int dir);
 
+	default boolean isMultiPoint() {
+		return false;
+	}
+
 }