v0.7.2d: moved the base halo class to SPD-classes

SPD-classes/src/main/java/com/watabou/noosa/Halo.java

@@ -0,0 +1,75 @@
+/*
+ * Pixel Dungeon
+ * Copyright (C) 2012-2015 Oleg Dolya
+ *
+ * Shattered Pixel Dungeon
+ * Copyright (C) 2014-2019 Evan Debenham
+ *
+ * This program 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.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+package com.watabou.noosa;
+
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+
+import com.watabou.gltextures.SmartTexture;
+import com.watabou.gltextures.TextureCache;
+
+public class Halo extends Image {
+	
+	private static final Object CACHE_KEY = Halo.class;
+	
+	protected static final int RADIUS	= 64;
+	
+	protected float radius = RADIUS;
+	protected float brightness = 1;
+
+	public Halo() {
+		super();
+		
+		if (!TextureCache.contains( CACHE_KEY )) {
+			Bitmap bmp = Bitmap.createBitmap( RADIUS * 2, RADIUS * 2, Bitmap.Config.ARGB_8888 );
+			Canvas canvas = new Canvas( bmp );
+			Paint paint = new Paint();
+			paint.setColor( 0x0AFFFFFF );
+			for (int i = 0; i < 50; i++) {
+				canvas.drawCircle(RADIUS, RADIUS, RADIUS * (i+1)/50f, paint);
+			}
+			TextureCache.add( CACHE_KEY, new SmartTexture( bmp ) );
+		}
+		
+		texture( CACHE_KEY );
+	}
+	
+	public Halo( float radius, int color, float brightness ) {
+		
+		this();
+		
+		hardlight( color );
+		alpha( this.brightness = brightness );
+		radius( radius );
+	}
+	
+	public Halo point( float x, float y ) {
+		this.x = x - (width()/2f);
+		this.y = y - (height()/2f);
+		return this;
+	}
+	
+	public void radius( float value ) {
+		scale.set(  (this.radius = value) / RADIUS );
+	}
+}