add slider style from yugecin/opsu-dance

src/itdelatrisu/opsu/Container.java

@@ -29,6 +29,7 @@
 import itdelatrisu.opsu.downloads.Updater;
 import itdelatrisu.opsu.options.Options;
 import itdelatrisu.opsu.render.CurveRenderState;
+import itdelatrisu.opsu.render.LegacyCurveRenderState;
 import itdelatrisu.opsu.ui.UI;
 
 import org.lwjgl.opengl.Display;
@@ -179,6 +180,7 @@ private void close_sub() {
 
 		// delete OpenGL objects involved in the Curve rendering
 		CurveRenderState.shutdown();
+		LegacyCurveRenderState.shutdown();
 
 		// destroy watch service
 		if (!Options.isWatchServiceEnabled())

src/itdelatrisu/opsu/GameData.java

@@ -1088,14 +1088,18 @@ else if (Options.isHitLightingEnabled() && !hitResult.hideResult && hitResult.re
 	 */
 	private void drawHitAnimations(HitObjectResult hitResult, int trackPosition) {
 		// fade out slider curve
-		if (hitResult.result != HIT_SLIDER_REPEAT && hitResult.curve != null) {
+		if (hitResult.result != HIT_SLIDER_REPEAT && hitResult.curve != null && !(Options.isExperimentalSliderStyle() && Options.isShrinkingSliders())) {
 			float progress = AnimationEquation.OUT_CUBIC.calc(
 				(float) Utils.clamp(trackPosition - hitResult.time, 0, HITCIRCLE_FADE_TIME) / HITCIRCLE_FADE_TIME);
 			float alpha = 1f - progress;
 			float oldWhiteAlpha = Colors.WHITE_FADE.a;
 			float oldColorAlpha = hitResult.color.a;
 			Colors.WHITE_FADE.a = hitResult.color.a = alpha;
-			hitResult.curve.draw(hitResult.color);
+			if (Options.isExperimentalSliderStyle()) {
+				hitResult.curve.draw(hitResult.color, Options.isMergingSliders() ? 1 : 0, hitResult.curve.getCurvePoints().length);
+			} else {
+				hitResult.curve.draw(hitResult.color);
+			}
 			Colors.WHITE_FADE.a = oldWhiteAlpha;
 			hitResult.color.a = oldColorAlpha;
 		}
@@ -1125,6 +1129,10 @@ private void drawHitAnimations(HitObjectResult hitResult, int trackPosition) {
 			fc.drawCentered(hitResult.x, hitResult.y);
 		}
 
+		if (hitResult.result != HIT_SLIDER_REPEAT && hitResult.curve != null && !Options.isDrawSliderEndCircles()) {
+			return;
+		}
+
 		// hit circles
 		float progress = AnimationEquation.OUT_CUBIC.calc(
 			(float) Utils.clamp(trackPosition - hitResult.time, 0, HITCIRCLE_FADE_TIME) / HITCIRCLE_FADE_TIME);

src/itdelatrisu/opsu/GameImage.java

@@ -105,6 +105,7 @@ protected Image process_sub(Image img, int w, int h) {
 
 	// Slider
 	SLIDER_GRADIENT ("slidergradient", "png"),
+	SLIDER_GRADIENT_EX ("slidergradient_ex", "png"),
 	SLIDER_BALL ("sliderb", "sliderb%d", "png"),
 	SLIDER_FOLLOWCIRCLE ("sliderfollowcircle", "png"),
 	REVERSEARROW ("reversearrow", "png"),

src/itdelatrisu/opsu/Utils.java

@@ -235,6 +235,21 @@ public static float clamp(float val, float low, float high) {
 		return val;
 	}
 
+	/**
+	 * Clamps a value between a lower and upper bound.
+	 * @param val the value to clamp
+	 * @param low the lower bound
+	 * @param high the upper bound
+	 * @return the clamped value
+	 */
+	public static double clamp(double val, double low, double high) {
+		if (val < low)
+			return low;
+		if (val > high)
+			return high;
+		return val;
+	}
+
 	/**
 	 * Returns the distance between two points.
 	 * @param x1 the x-component of the first point
@@ -741,4 +756,14 @@ public static long getUsedMemory() {
 		Runtime r = Runtime.getRuntime();
 		return r.totalMemory() - r.freeMemory();
 	}
+
+	public static class Pair<F, S> {
+		public F first;
+		public S second;
+		public Pair(F first, S second) {
+			this.first = first;
+			this.second = second;
+		}
+	}
+
 }

src/itdelatrisu/opsu/beatmap/HitObject.java

@@ -271,6 +271,19 @@ else if ((type & HitObject.TYPE_SLIDER) > 0) {
 		}
 	}
 
+	/**
+	 * Constructor to make fake/temp hitobj
+	 * @param x xpos
+	 * @param y ypos
+	 * @param time time
+	 */
+	public HitObject( float x, float y, int time) {
+		this.x = x;
+		this.y = y;
+		this.time = time;
+		this.type = HitObject.TYPE_CIRCLE;
+	}
+
 	/**
 	 * Returns the raw starting x coordinate.
 	 */

src/itdelatrisu/opsu/objects/Circle.java

@@ -38,7 +38,7 @@
  */
 public class Circle implements GameObject {
 	/** The diameter of hit circles. */
-	private static float diameter;
+	public static float diameter;
 
 	/** The associated HitObject. */
 	private HitObject hitObject;

src/itdelatrisu/opsu/objects/Slider.java

@@ -117,6 +117,12 @@ public class Slider implements GameObject {
 	/** Container dimensions. */
 	private static int containerWidth, containerHeight;
 
+	/** Curve color for experimental style sliders. */
+	private static Color curveColor = new Color(0, 0, 0, 20);
+
+	/** Start index of this slider in the merged slider. */
+	public int baseSliderFrom;
+
 	/**
 	 * Initializes the Slider data type with images and dimensions.
 	 * @param container the game container
@@ -212,11 +218,18 @@ public void draw(Graphics g, int trackPosition) {
 				Math.max(0f, 1f - ((float) (trackPosition - hitObject.getTime()) / (getEndTime() - hitObject.getTime())) * 1.05f);
 		}
 
-		float curveInterval = Options.isSliderSnaking() ? alpha : 1f;
-		curve.draw(color,curveInterval);
+		boolean isCurveCompletelyDrawn;
+		if (!Options.isExperimentalSliderStyle()) {
+			isCurveCompletelyDrawn = Options.isSliderSnaking() || alpha == 1f;
+			curve.draw(color, isCurveCompletelyDrawn ? 1f : alpha);
+		} else {
+			curveColor.a = sliderAlpha;
+			isCurveCompletelyDrawn = drawSliderTrack(trackPosition, Utils.clamp(1d - (double) (timeDiff - approachTime + fadeInTime) / fadeInTime, 0d, 1d));
+			color.a = alpha;
+		}
 
 		// end circle (only draw if ball still has to go there)
-		if (curveInterval == 1f && currentRepeats < repeatCount - (repeatCount % 2 == 0 ? 1 : 0)) {
+		if (isCurveCompletelyDrawn && (!Options.isExperimentalSliderStyle() || Options.isDrawSliderEndCircles()) && currentRepeats < repeatCount - (repeatCount % 2 == 0 ? 1 : 0)) {
 			Color circleColor = new Color(color);
 			Color overlayColor = new Color(Colors.WHITE_FADE);
 			if (currentRepeats == 0) {
@@ -228,7 +241,7 @@ public void draw(Graphics g, int trackPosition) {
 				// fade in end circle after repeats
 				circleColor.a = overlayColor.a = sliderAlpha * getCircleAlphaAfterRepeat(trackPosition, true);
 			}
-			Vec2f endCircPos = curve.pointAt(curveInterval);
+			Vec2f endCircPos = curve.pointAt(1f);
 			hitCircle.drawCentered(endCircPos.x, endCircPos.y, circleColor);
 			hitCircleOverlay.drawCentered(endCircPos.x, endCircPos.y, overlayColor);
 		}
@@ -277,13 +290,15 @@ public void draw(Graphics g, int trackPosition) {
 		}
 
 		// repeats
-		if (curveInterval == 1.0f) {
+		if (isCurveCompletelyDrawn) {
 			for (int tcurRepeat = currentRepeats; tcurRepeat <= currentRepeats + 1 && tcurRepeat < repeatCount - 1; tcurRepeat++) {
 				Image arrow = GameImage.REVERSEARROW.getImage();
 				// bouncing animation
 				//arrow = arrow.getScaledCopy((float) (1 + 0.2d * ((trackPosition + sliderTime * tcurRepeat) % 292) / 292));
-				float colorLuminance = Utils.getLuminance(color);
-				Color arrowColor = colorLuminance < 0.8f ? Color.white : Color.black;
+				Color arrowColor = Color.white;
+				if (!Options.isExperimentalSliderStyle() && Utils.getLuminance(color) >= 0.8f) {
+					arrowColor = Color.black;
+				}
 				if (tcurRepeat == 0) {
 					arrow.setAlpha(Options.isSliderSnaking() ? decorationsAlpha : 1f);
 				} else {
@@ -406,6 +421,42 @@ private void drawSliderTicks(int trackPosition, float curveAlpha, float decorati
 		}
 	}
 
+	/**
+	 * Draws the slider track for the experimental style sliders.
+	 * @param trackPosition position of the song
+	 * @param snakingSliderProgress progress of the snaking sliders [0, 1]
+	 * @return true if the track was completely drawn
+	 */
+	private boolean drawSliderTrack(int trackPosition, double snakingSliderProgress) {
+		double curveIntervalTo = Options.isSliderSnaking() ? snakingSliderProgress : 1d;
+		double curveIntervalFrom = 0d;
+		if (Options.isShrinkingSliders()) {
+			double sliderprogress = (trackPosition - hitObject.getTime() - ((double) sliderTime * (hitObject.getRepeatCount() - 1))) / (double) sliderTime;
+			if (sliderprogress > 0) {
+				curveIntervalFrom = sliderprogress;
+			}
+		}
+		int curvelen = curve.getCurvePoints().length;
+		if (Options.isMergingSliders()) {
+			if (Options.isShrinkingSliders() && curveIntervalFrom > 0) {
+				if (hitObject.getRepeatCount() % 2 == 0) {
+					game.addMergedSliderPointsToRender(baseSliderFrom, baseSliderFrom + (int) ((1d - curveIntervalFrom) * curvelen));
+				} else {
+					game.addMergedSliderPointsToRender(baseSliderFrom + (int) (curveIntervalFrom * curvelen) + 1, baseSliderFrom + (int) (curveIntervalTo * curve.getCurvePoints().length));
+				}
+			} else {
+				game.addMergedSliderPointsToRender(baseSliderFrom, baseSliderFrom + (int) (curveIntervalTo * curve.getCurvePoints().length));
+			}
+		} else {
+			if (Options.isShrinkingSliders() && curveIntervalFrom > 0 && hitObject.getRepeatCount() % 2 == 0) {
+				curve.splice((int) ((1d - curveIntervalFrom) * curvelen), curvelen);
+				curveIntervalFrom = 0d;
+			}
+			curve.draw(curveColor, (int) (curveIntervalFrom * curvelen), (int) (curveIntervalTo * curvelen));
+		}
+		return curveIntervalTo == 1d;
+	}
+
 	/**
 	 * Get the alpha level used to fade in circles & reversearrows after repeat
 	 * @param trackPosition current trackposition, in ms
@@ -707,7 +758,6 @@ else if (GameMod.RELAX.isActive() && trackPosition >= time)
 
 			// calculate and send slider result
 			hitResult();
-
 			return true;
 		}
 
@@ -753,6 +803,10 @@ private float getT(int trackPosition, boolean raw) {
 		}
 	}
 
+	public Curve getCurve() {
+		return curve;
+	}
+
 	@Override
 	public void reset() {
 		sliderClickedInitial = false;

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

@@ -23,6 +23,7 @@
 import itdelatrisu.opsu.beatmap.HitObject;
 import itdelatrisu.opsu.options.Options;
 import itdelatrisu.opsu.render.CurveRenderState;
+import itdelatrisu.opsu.render.LegacyCurveRenderState;
 import itdelatrisu.opsu.skins.Skin;
 import itdelatrisu.opsu.ui.Colors;
 
@@ -42,7 +43,7 @@ public abstract class Curve {
 	protected static float CURVE_POINTS_SEPERATION = 5;
 
 	/** The curve border color. */
-	private static Color borderColor;
+	protected static Color borderColor;
 
 	/** Whether mmsliders are supported. */
 	private static boolean mmsliderSupported = false;
@@ -59,9 +60,20 @@ public abstract class Curve {
 	/** Per-curve render-state used for the new style curve renders. */
 	private CurveRenderState renderState;
 
+	/** Per-curve render-state used for the legacy style curve renders. */
+	protected LegacyCurveRenderState legacyRenderState;
+
 	/** Points along the curve (set by inherited classes). */
 	protected Vec2f[] curve;
 
+	/**
+	 * Get the curve points
+	 * @return curve points
+	 */
+	public Vec2f[] getCurvePoints() {
+		return curve;
+	}
+
 	/**
 	 * Constructor.
 	 * @param hitObject the associated HitObject
@@ -96,9 +108,10 @@ public static void init(int width, int height, float circleDiameter, Color borde
 
 		ContextCapabilities capabilities = GLContext.getCapabilities();
 		mmsliderSupported = capabilities.OpenGL30;
-		if (mmsliderSupported)
+		if (mmsliderSupported) {
 			CurveRenderState.init(width, height, circleDiameter);
-		else {
+			LegacyCurveRenderState.init(width, height, circleDiameter);
+		} else {
 			if (Options.getSkin().getSliderStyle() != Skin.STYLE_PEPPYSLIDER)
 				Log.warn("New slider style requires OpenGL 3.0.");
 		}
@@ -147,6 +160,25 @@ public void draw(Color color, float t) {
 		}
 	}
 
+	public void draw(Color color, int from, int to) {
+		if (curve == null)
+			return;
+		if (legacyRenderState == null)
+			legacyRenderState = new LegacyCurveRenderState(hitObject, curve);
+		legacyRenderState.draw(color, borderColor, from, to);
+	}
+
+	/**
+	 * Splice the curve to draw (= flag a part of it as 'do not draw'). Bases on the curve point indices.
+	 * @param from start index to splice
+	 * @param to end index to splice
+	 */
+	public void splice(int from, int to) {
+		if (legacyRenderState == null)
+			return;
+		legacyRenderState.splice(from, to);
+	}
+
 	/**
 	 * Returns the angle of the first control point.
 	 */
@@ -175,5 +207,7 @@ public void draw(Color color, float t) {
 	public void discardGeometry() {
 		if (renderState != null)
 			renderState.discardGeometry();
+		if (legacyRenderState != null)
+			legacyRenderState.discardGeometry();
 	}
 }

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

@@ -0,0 +1,67 @@
+/*
+ * opsu! - an open-source osu! client
+ * Copyright (C) 2014-2017 Jeffrey Han
+ *
+ * opsu! 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!.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package itdelatrisu.opsu.objects.curves;
+
+import itdelatrisu.opsu.Utils;
+import itdelatrisu.opsu.beatmap.HitObject;
+import itdelatrisu.opsu.render.LegacyCurveRenderState;
+import org.newdawn.slick.Color;
+
+import java.util.LinkedList;
+
+public class FakeCombinedCurve extends Curve {
+
+	private LinkedList<Utils.Pair<Integer, Integer>> pointsToRender;
+
+	public FakeCombinedCurve(Vec2f[] points) {
+		super(new HitObject(0, 0, 0), false);
+		this.curve = points;
+		pointsToRender = new LinkedList<>();
+	}
+
+	public void initForFrame() {
+		pointsToRender.clear();
+	}
+
+	public void addRange(int from, int to) {
+		pointsToRender.add(new Utils.Pair<>(from, to));
+	}
+
+	@Override
+	public void draw(Color color) {
+		if (legacyRenderState == null)
+			legacyRenderState = new LegacyCurveRenderState(hitObject, curve);
+		legacyRenderState.draw(color, borderColor, pointsToRender);
+	}
+
+	@Override
+	public Vec2f pointAt(float t) {
+		return null;
+	}
+
+	@Override
+	public float getEndAngle() {
+		return 0;
+	}
+
+	@Override
+	public float getStartAngle() {
+		return 0;
+	}
+
+}