add halfcirclespinner

src/yugecin/opsudance/Dancer.java

@@ -46,6 +46,7 @@ public class Dancer {
 		new BeamSpinner(),
 		new CircleSpinner(),
 		new CubeSpinner(),
+		new HalfCircleSpinner(),
 	};
 
 	public static Dancer instance = new Dancer();

src/yugecin/opsudance/spinners/HalfCircleSpinner.java

@@ -0,0 +1,57 @@
+/*
+ * 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!dance 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.spinners;
+
+import itdelatrisu.opsu.Options;
+
+public class HalfCircleSpinner extends Spinner {
+
+	private int ang = 0;
+	private double[] point = new double[2];
+	private int skipang = 180;
+
+	@Override
+	public void init()
+	{
+		ang = 0;
+		skipang = 180;
+	}
+
+	@Override
+	public double[] getPoint()
+	{
+		ang += 15;
+
+		if( ang > skipang - 160 )
+		{
+			ang = skipang;
+			skipang += 359;
+		}
+
+		point[0] = Options.width / 2.0d + Options.height / 2 * 0.8d * Math.cos(ang/180d*Math.PI);
+		point[1] = Options.height / 2.0d + Options.height / 2 * 0.8d * Math.sin(ang/180d*Math.PI);
+
+		return point;
+	}
+
+	@Override
+	public String toString() {
+		return "Half circle";
+	}
+
+}