Specify whether Curve uses scaled or unscaled coordinates.

Unscaled coordinates will be used in a future commit (hopefully).

Added a normalize() method to Vec2f.

Throw RuntimeExceptions for any Curve initialization errors; the game would crash anyway, and this way the objects can be substituted for DummyObjects for a graceful failure.

Signed-off-by: Jeffrey Han <itdelatrisu@gmail.com>

src/itdelatrisu/opsu/objects/curves/CatmullCurve.java

@@ -18,13 +18,10 @@
 
 package itdelatrisu.opsu.objects.curves;
 
-import itdelatrisu.opsu.ErrorHandler;
 import itdelatrisu.opsu.beatmap.HitObject;
 
 import java.util.LinkedList;
 
-import org.newdawn.slick.SlickException;
-
 /**
  * Representation of Catmull Curve with equidistant points.
  *
@@ -36,7 +33,16 @@ public class CatmullCurve extends EqualDistanceMultiCurve {
 	 * @param hitObject the associated HitObject
 	 */
 	public CatmullCurve(HitObject hitObject) {
-		super(hitObject);
+		this(hitObject, true);
+	}
+
+	/**
+	 * Constructor.
+	 * @param hitObject the associated HitObject
+	 * @param scaled whether to use scaled coordinates
+	 */
+	public CatmullCurve(HitObject hitObject, boolean scaled) {
+		super(hitObject, scaled);
 		LinkedList<CurveType> catmulls = new LinkedList<CurveType>();
 		int ncontrolPoints = hitObject.getSliderX().length + 1;
 		LinkedList<Vec2f> points = new LinkedList<Vec2f>();  // temporary list of points to separate different curves
@@ -51,24 +57,15 @@ public class CatmullCurve extends EqualDistanceMultiCurve {
 		for (int i = 0; i < ncontrolPoints; i++) {
 			points.addLast(new Vec2f(getX(i), getY(i)));
 			if (points.size() >= 4) {
-				try {
-					catmulls.add(new CentripetalCatmullRom(points.toArray(new Vec2f[0])));
-				} catch (SlickException e) {
-					ErrorHandler.error(null, e, true);
-				}
+				catmulls.add(new CentripetalCatmullRom(points.toArray(new Vec2f[0])));
 				points.removeFirst();
 			}
 		}
 		if (getX(ncontrolPoints - 1) != getX(ncontrolPoints - 2) ||
 		    getY(ncontrolPoints - 1) != getY(ncontrolPoints - 2))
 			points.addLast(new Vec2f(getX(ncontrolPoints - 1), getY(ncontrolPoints - 1)));
-		if (points.size() >= 4) {
-			try {
-				catmulls.add(new CentripetalCatmullRom(points.toArray(new Vec2f[0])));
-			} catch (SlickException e) {
-				ErrorHandler.error(null, e, true);
-			}
-		}
+		if (points.size() >= 4)
+			catmulls.add(new CentripetalCatmullRom(points.toArray(new Vec2f[0])));
 
 		init(catmulls);
 	}

src/itdelatrisu/opsu/objects/curves/CentripetalCatmullRom.java

@@ -18,8 +18,6 @@
 
 package itdelatrisu.opsu.objects.curves;
 
-import org.newdawn.slick.SlickException;
-
 /**
  * Representation of a Centripetal Catmull–Rom spline.
  * (Currently not technically Centripetal Catmull–Rom.)
@@ -37,11 +35,10 @@ public class CentripetalCatmullRom extends CurveType {
 	/**
 	 * Constructor.
 	 * @param points the control points of the curve
-	 * @throws SlickException
 	 */
-	protected CentripetalCatmullRom(Vec2f[] points) throws SlickException {
+	protected CentripetalCatmullRom(Vec2f[] points) {
 		if (points.length != 4)
-			throw new SlickException(String.format("Need exactly 4 points to initialize CentripetalCatmullRom, %d provided.", points.length));
+			throw new RuntimeException(String.format("Need exactly 4 points to initialize CentripetalCatmullRom, %d provided.", points.length));
 
 		this.points = points;
 		time = new float[4];

src/itdelatrisu/opsu/objects/curves/CircumscribedCircle.java

@@ -18,7 +18,6 @@
 
 package itdelatrisu.opsu.objects.curves;
 
-import itdelatrisu.opsu.ErrorHandler;
 import itdelatrisu.opsu.Utils;
 import itdelatrisu.opsu.beatmap.HitObject;
 
@@ -54,7 +53,16 @@ public class CircumscribedCircle extends Curve {
 	 * @param hitObject the associated HitObject
 	 */
 	public CircumscribedCircle(HitObject hitObject) {
-		super(hitObject);
+		this(hitObject, true);
+	}
+
+	/**
+	 * Constructor.
+	 * @param hitObject the associated HitObject
+	 * @param scaled whether to use scaled coordinates
+	 */
+	public CircumscribedCircle(HitObject hitObject, boolean scaled) {
+		super(hitObject, scaled);
 
 		// construct the three points
 		this.start = new Vec2f(getX(0), getY(0));
@@ -68,8 +76,6 @@ public class CircumscribedCircle extends Curve {
 		Vec2f norb = mid.cpy().sub(end).nor();
 
 		this.circleCenter = intersect(mida, nora, midb, norb);
-		if (circleCenter == null)
-			return;
 
 		// find the angles relative to the circle center
 		Vec2f startAngPoint = start.cpy().sub(circleCenter);
@@ -90,13 +96,8 @@ public class CircumscribedCircle extends Curve {
 				startAng -= TWO_PI;
 			else if (Math.abs(startAng - (endAng - TWO_PI)) < TWO_PI && isIn(startAng, midAng, endAng - (TWO_PI)))
 				endAng -= TWO_PI;
-			else {
-				ErrorHandler.error(
-					String.format("Cannot find angles between midAng (%.3f %.3f %.3f).",
-							startAng, midAng, endAng), null, true
-				);
-				return;
-			}
+			else
+				throw new RuntimeException(String.format("Cannot find angles between midAng (%.3f %.3f %.3f).", startAng, midAng, endAng));
 		}
 
 		// find an angle with an arc length of pixelLength along this circle
@@ -149,10 +150,8 @@ public class CircumscribedCircle extends Curve {
 		//u = ((b.y-a.y)ta.x +(a.x-b.x)ta.y) / (tb.x*ta.y - tb.y*ta.x);
 
 		float des = tb.x * ta.y - tb.y * ta.x;
-		if (Math.abs(des) < 0.00001f) {
-			ErrorHandler.error("Vectors are parallel.", null, true);
-			return null;
-		}
+		if (Math.abs(des) < 0.00001f)
+			throw new RuntimeException("Vectors are parallel.");
 		float u = ((b.y - a.y) * ta.x + (a.x - b.x) * ta.y) / des;
 		return b.cpy().add(tb.x * u, tb.y * u);
 	}

src/itdelatrisu/opsu/objects/curves/Curve.java

@@ -64,13 +64,21 @@ public abstract class Curve {
 	/**
 	 * Constructor.
 	 * @param hitObject the associated HitObject
+	 * @param scaled whether to use scaled coordinates
 	 */
-	protected Curve(HitObject hitObject) {
+	protected Curve(HitObject hitObject, boolean scaled) {
 		this.hitObject = hitObject;
-		this.x = hitObject.getScaledX();
-		this.y = hitObject.getScaledY();
-		this.sliderX = hitObject.getScaledSliderX();
-		this.sliderY = hitObject.getScaledSliderY();
+		if (scaled) {
+			this.x = hitObject.getScaledX();
+			this.y = hitObject.getScaledY();
+			this.sliderX = hitObject.getScaledSliderX();
+			this.sliderY = hitObject.getScaledSliderY();
+		} else {
+			this.x = hitObject.getX();
+			this.y = hitObject.getY();
+			this.sliderX = hitObject.getSliderX();
+			this.sliderY = hitObject.getSliderY();
+		}
 		this.renderState = null;
 	}
 

src/itdelatrisu/opsu/objects/curves/EqualDistanceMultiCurve.java

@@ -42,7 +42,16 @@ public abstract class EqualDistanceMultiCurve extends Curve {
 	 * @param hitObject the associated HitObject
 	 */
 	public EqualDistanceMultiCurve(HitObject hitObject) {
-		super(hitObject);
+		this(hitObject, true);
+	}
+
+	/**
+	 * Constructor.
+	 * @param hitObject the associated HitObject
+	 * @param scaled whether to use scaled coordinates
+	 */
+	public EqualDistanceMultiCurve(HitObject hitObject, boolean scaled) {
+		super(hitObject, scaled);
 	}
 
 	/**

src/itdelatrisu/opsu/objects/curves/LinearBezier.java

@@ -35,7 +35,17 @@ public class LinearBezier extends EqualDistanceMultiCurve {
 	 * @param line whether a new curve should be generated for each sequential pair
 	 */
 	public LinearBezier(HitObject hitObject, boolean line) {
-		super(hitObject);
+		this(hitObject, line, true);
+	}
+
+	/**
+	 * Constructor.
+	 * @param hitObject the associated HitObject
+	 * @param line whether a new curve should be generated for each sequential pair
+	 * @param scaled whether to use scaled coordinates
+	 */
+	public LinearBezier(HitObject hitObject, boolean line, boolean scaled) {
+		super(hitObject, scaled);
 
 		LinkedList<CurveType> beziers = new LinkedList<CurveType>();
 

src/itdelatrisu/opsu/objects/curves/Vec2f.java

@@ -93,6 +93,17 @@ public class Vec2f {
 		return this;
 	}
 
+	/**
+	 * Turns this vector into a unit vector.
+	 * @return itself (for chaining)
+	 */
+	public Vec2f normalize() {
+		float len = len();
+		x /= len;
+		y /= len;
+		return this;
+	}
+
 	/**
 	 * Returns a copy of this vector.
 	 */