Converted ShatteredPD to Build from Gradle

Major Changes:
- Shattered now builds effortlessly either from gradle CLI or android studio
- Much better dependency management through gradle (although it's not really used atm)
- Separate PD-classes repo is now SPD-classes module within main repo

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

@@ -0,0 +1,110 @@
+/*
+ * Pixel Dungeon
+ * Copyright (C) 2012-2015  Oleg Dolya
+ *
+ * Shattered Pixel Dungeon
+ * Copyright (C) 2014-2016 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 java.util.HashMap;
+
+import com.watabou.gltextures.SmartTexture;
+import com.watabou.gltextures.TextureCache;
+
+import android.graphics.RectF;
+
+public class TextureFilm {
+	
+	private static final RectF FULL = new RectF( 0, 0, 1, 1 );
+	
+	private int texWidth;
+	private int texHeight;
+	
+	protected HashMap<Object,RectF> frames = new HashMap<Object, RectF>();
+	
+	public TextureFilm( Object tx ) {
+		
+		SmartTexture texture = TextureCache.get( tx );
+		
+		texWidth = texture.width;
+		texHeight = texture.height;
+		
+		add( null, FULL );
+	}
+	
+	public TextureFilm( SmartTexture texture, int width ) {
+		this( texture, width, texture.height );
+	}
+	
+	public TextureFilm( Object tx, int width, int height ) {
+		
+		SmartTexture texture = TextureCache.get( tx );
+		
+		texWidth = texture.width;
+		texHeight = texture.height;
+		
+		float uw = (float)width / texWidth;
+		float vh = (float)height / texHeight;
+		int cols = texWidth / width;
+		int rows = texHeight / height;
+		
+		for (int i=0; i < rows; i++) {
+			for (int j=0; j < cols; j++) {
+				RectF rect = new RectF( j * uw, i * vh, (j+1) * uw, (i+1) * vh );
+				add( i * cols + j, rect );
+			}
+		}
+	}
+	
+	public TextureFilm( TextureFilm atlas, Object key, int width, int height ) {
+	
+		texWidth = atlas.texWidth;
+		texHeight = atlas.texHeight;
+		
+		RectF patch = atlas.get( key );
+		
+		float uw = (float)width / texWidth;
+		float vh = (float)height / texHeight;
+		int cols = (int)(width( patch ) / width);
+		int rows = (int)(height( patch ) / height);
+		
+		for (int i=0; i < rows; i++) {
+			for (int j=0; j < cols; j++) {
+				RectF rect = new RectF( j * uw, i * vh, (j+1) * uw, (i+1) * vh );
+				rect.offset( patch.left, patch.top );
+				add( i * cols + j, rect );
+			}
+		}
+	}
+	
+	public void add( Object id, RectF rect ) {
+		frames.put( id, rect );
+	}
+	
+	public RectF get( Object id ) {
+		return frames.get( id );
+	}
+	
+	public float width( RectF frame ) {
+		return frame.width() * texWidth;
+	}
+	
+	public float height( RectF frame ) {
+		return frame.height() * texHeight;
+	}
+}