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/SkinnedBlock.java

@@ -0,0 +1,130 @@
+/*
+ * 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 com.watabou.glwrap.Texture;
+
+import android.graphics.RectF;
+
+public class SkinnedBlock extends Image {
+	
+	protected float scaleX;
+	protected float scaleY;
+	
+	protected float offsetX;
+	protected float offsetY;
+
+	public boolean autoAdjust = false;
+
+	public SkinnedBlock( float width, float height, Object tx ) {
+		super( tx );
+		
+		texture.wrap( Texture.REPEAT, Texture.REPEAT );
+		
+		size( width, height );
+	}
+	
+	@Override
+	public void frame( RectF frame ) {
+		scaleX = 1;
+		scaleY = 1;
+		
+		offsetX = 0;
+		offsetY = 0;
+		
+		super.frame( new RectF( 0, 0, 1, 1 ) );
+	}
+	
+	@Override
+	protected void updateFrame() {
+
+		if (autoAdjust) {
+			while (offsetX > texture.width) {
+				offsetX -= texture.width;
+			}
+			while (offsetX < -texture.width) {
+				offsetX += texture.width;
+			}
+			while (offsetY > texture.height) {
+				offsetY -= texture.height;
+			}
+			while (offsetY < -texture.height) {
+				offsetY += texture.height;
+			}
+		}
+
+		float tw = 1f / texture.width;
+		float th = 1f / texture.height;
+		
+		float u0 = offsetX * tw;
+		float v0 = offsetY * th;
+		float u1 = u0 + width * tw / scaleX;
+		float v1 = v0 + height * th / scaleY;
+		
+		vertices[2]		= u0;
+		vertices[3]		= v0;
+		
+		vertices[6]		= u1;
+		vertices[7]		= v0;
+		
+		vertices[10]	= u1;
+		vertices[11]	= v1;
+		
+		vertices[14]	= u0;
+		vertices[15]	= v1;
+		
+		dirty = true;
+	}
+	
+	public void offsetTo( float x, float y ) {
+		offsetX = x;
+		offsetY = y;
+		updateFrame();
+	}
+	
+	public void offset( float x, float y ) {
+		offsetX += x;
+		offsetY += y;
+		updateFrame();
+	}
+	
+	public float offsetX() {
+		return offsetX;
+	}
+	
+	public float offsetY() {
+		return offsetY;
+	}
+	
+	public void scale( float x, float y ) {
+		scaleX = x;
+		scaleY = y;
+		updateFrame();
+	}
+	
+	public void size( float w, float h ) {
+		this.width = w;
+		this.height = h;
+		updateFrame();
+		updateVertices();
+	}
+}