we want to dance

src/itdelatrisu/opsu/objects/Circle.java

@@ -38,7 +38,7 @@ import org.newdawn.slick.Graphics;
  */
 public class Circle extends GameObject {
 	/** The diameter of hit circles. */
-	private static float diameter;
+	public static float diameter;
 
 	/** The associated HitObject. */
 	private HitObject hitObject;

src/itdelatrisu/opsu/states/Game.java

@@ -73,6 +73,7 @@ import org.newdawn.slick.state.transition.DelayedFadeOutTransition;
 import org.newdawn.slick.state.transition.EasedFadeOutTransition;
 import org.newdawn.slick.state.transition.EmptyTransition;
 import org.newdawn.slick.state.transition.FadeInTransition;
+import yugecin.opsudance.Dancer;
 
 /**
  * "Game" state.
@@ -341,19 +342,17 @@ public class Game extends BasicGameState {
 		autoMousePosition.set(width / 2, height / 2);
 		autoMousePressed = false;
 		if (GameMod.AUTO.isActive() || GameMod.AUTOPILOT.isActive()) {
-			Vec2f autoPoint = null;
-			if (isLeadIn()) {
-				// lead-in
-				float progress = Math.max((float) (leadInTime - beatmap.audioLeadIn) / approachTime, 0f);
-				autoMousePosition.y = height / (2f - progress);
-			} else if (objectIndex == 0 && trackPosition < firstObjectTime) {
-				// before first object
-				timeDiff = firstObjectTime - trackPosition;
-				if (timeDiff < approachTime) {
-					Vec2f point = gameObjects[0].getPointAt(trackPosition);
-					autoPoint = getPointAt(autoMousePosition.x, autoMousePosition.y, point.x, point.y, 1f - ((float) timeDiff / approachTime));
+			Vec2f autoPoint;
+			if (objectIndex == 0) {
+				autoPoint = gameObjects[0].getPointAt(trackPosition);
+			} else if (objectIndex < beatmap.objects.length - 1) {
+				Dancer d = Dancer.instance;
+				d.update(trackPosition, gameObjects[objectIndex - 1], gameObjects[objectIndex]);
+				autoPoint = new Vec2f(d.x, d.y);
+				if (trackPosition < gameObjects[objectIndex].getTime()) {
+					autoMousePressed = true;
 				}
-			} else if (objectIndex < beatmap.objects.length) {
+				/*
 				// normal object
 				int objectTime = beatmap.objects[objectIndex].getTime();
 				if (trackPosition < objectTime) {
@@ -386,13 +385,13 @@ public class Game extends BasicGameState {
 					autoPoint = gameObjects[objectIndex].getPointAt(trackPosition);
 					autoMousePressed = true;
 				}
+				*/
 			} else {
 				// last object
 				autoPoint = gameObjects[objectIndex - 1].getPointAt(trackPosition);
 			}
 
 			// set mouse coordinates
-			if (autoPoint != null)
 			autoMousePosition.set(autoPoint.x, autoPoint.y);
 		}
 
@@ -1139,6 +1138,8 @@ public class Game extends BasicGameState {
 		if (beatmap == null || beatmap.objects == null)
 			throw new RuntimeException("Running game with no beatmap loaded.");
 
+		Dancer.instance.init(beatmap.getTitle());
+
 		// free all previously cached hitobject to framebuffer mappings if some still exist
 		FrameBufferCache.getInstance().freeMap();
 
@@ -1217,7 +1218,6 @@ public class Game extends BasicGameState {
 							hitObject.getTypeName(), i, hitObject.toString()), e, true);
 					gameObjects[i] = new DummyObject(hitObject);
 				}
-				gameObjects[i].updateStartEndPositions(hitObjectTime);
 			}
 
 			// stack calculations
@@ -1267,6 +1267,10 @@ public class Game extends BasicGameState {
 				replayFrames.add(new ReplayFrame(0, 0, input.getMouseX(), input.getMouseY(), 0));
 			}
 
+			for (int i = 0; i < gameObjects.length; i++) {
+				gameObjects[i].updateStartEndPositions(beatmap.objects[i].getTime());
+			}
+
 			leadInTime = beatmap.audioLeadIn + approachTime;
 			restart = Restart.FALSE;
 
@@ -1756,22 +1760,6 @@ public class Game extends BasicGameState {
 		return frame;
 	}
 
-	/**
-	 * Returns the point at the t value between a start and end point.
-	 * @param startX the starting x coordinate
-	 * @param startY the starting y coordinate
-	 * @param endX the ending x coordinate
-	 * @param endY the ending y coordinate
-	 * @param t the t value [0, 1]
-	 * @return the position vector
-	 */
-	private Vec2f getPointAt(float startX, float startY, float endX, float endY, float t) {
-		// "autopilot" mod: move quicker between objects
-		if (GameMod.AUTOPILOT.isActive())
-			t = Utils.clamp(t * 2f, 0f, 1f);
-		return new Vec2f(startX + (endX - startX) * t, startY + (endY - startY) * t);
-	}
-
 	/**
 	 * Updates the current visible area radius (if the "flashlight" mod is enabled).
 	 * @param delta the delta interval

src/yugecin/opsudance/Dancer.java

@@ -0,0 +1,111 @@
+/*
+ * opsu!dance - fork of opsu! with cursordance auto
+ * Copyright (C) 2016 yugecin
+ *
+ * opsu!dance is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * opsu! is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with opsu!dance.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package yugecin.opsudance;
+
+import itdelatrisu.opsu.Options;
+import itdelatrisu.opsu.Utils;
+import itdelatrisu.opsu.objects.GameObject;
+import itdelatrisu.opsu.objects.curves.Vec2f;
+import yugecin.opsudance.movers.Mover;
+import yugecin.opsudance.movers.factories.*;
+import yugecin.opsudance.spinners.RektSpinner;
+import yugecin.opsudance.spinners.Spinner;
+
+import java.util.Random;
+
+public class Dancer {
+
+	public static MoverFactory[] moverFactories = new MoverFactory[] {
+		new AutoMoverFactory(),
+		new AutoEllipseMoverFactory(),
+		new CircleMoverFactory(),
+		new HalfCircleMoverFactory(),
+		new HalfEllipseMoverFactory(),
+		new HalfLowEllipseMoverFactory(),
+		new JumpMoverFactory(),
+		new LinearMoverFactory(),
+		new QuartCircleMoverFactory()
+	};
+
+	public static Spinner[] spinners = new Spinner[] {
+		new RektSpinner()
+	};
+
+	public static Dancer instance = new Dancer();
+
+	private int dir;
+	private GameObject p;
+	private Random rand;
+
+	private MoverFactory moverFactory;
+	private Mover mover;
+	private Spinner spinner;
+
+	public float x;
+	public float y;
+
+	public Dancer() {
+		moverFactory = moverFactories[0];
+		spinner = spinners[0];
+	}
+
+	public void init(String mapname) {
+		p = null;
+		rand = new Random(mapname.hashCode());
+		dir = 1;
+		for (Spinner s : spinners) {
+			s.init();
+		}
+	}
+
+	public void update(int time, GameObject p, GameObject c) {
+		if (this.p != p) {
+			this.p = p;
+			if (rand.nextInt(2) == 1) {
+				dir *= -1;
+			}
+			if (c.isSpinner()) {
+				double[] spinnerStartPoint = spinner.getPoint();
+				c.start = new Vec2f((float) spinnerStartPoint[0], (float) spinnerStartPoint[1]);
+			}
+			mover = moverFactory.create(p, c, dir);
+		}
+
+		if (time < c.getTime()) {
+			if (!p.isSpinner() || !c.isSpinner()) {
+				double[] point = mover.getPointAt(time);
+				x = (float) point[0];
+				y = (float) point[1];
+			}
+			x = Utils.clamp(x, 10, Options.width - 10);
+			y = Utils.clamp(y, 10, Options.height - 10);
+		} else {
+			if (c.isSpinner()) {
+				double[] point = spinner.getPoint();
+				x = (float) point[0];
+				y = (float) point[1];
+				c.end = new Vec2f(x, y);
+			} else {
+				Vec2f point = c.getPointAt(time);
+				x = point.x;
+				y = point.y;
+			}
+		}
+	}
+
+}