Basic main menu finished.

src/ve/ucv/ciens/ccg/nxtar/NxtARCore.java

@@ -175,8 +175,8 @@ public class NxtARCore extends Game implements NetworkConnectionListener{
 			Controllers.addListener(states[currState.getValue()]);
 
 			// Anything else.
-			Gdx.app.setLogLevel(Application.LOG_INFO);
+			//Gdx.app.setLogLevel(Application.LOG_DEBUG);
-			// Gdx.app.setLogLevel(Application.LOG_NONE);
+			Gdx.app.setLogLevel(Application.LOG_NONE);
 	}
 
 	public void render(){

src/ve/ucv/ciens/ccg/nxtar/network/SensorReportThread.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2014 Miguel Angel Astor Romero
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ve.ucv.ciens.ccg.nxtar.network;
+
+public class SensorReportThread extends Thread {
+
+	private SensorReportThread(){
+
+	}
+
+	private static class SingletonHolder{
+		public final static SensorReportThread INSTANCE = new SensorReportThread();
+	}
+
+	public static SensorReportThread getInstance(){
+		return SingletonHolder.INSTANCE;
+	}
+
+	@Override
+	public void run(){
+
+	}
+}

src/ve/ucv/ciens/ccg/nxtar/network/VideoStreamingThread.java

@@ -24,6 +24,7 @@ import java.net.Socket;
 
 import ve.ucv.ciens.ccg.networkdata.VideoFrameDataMessage;
 import ve.ucv.ciens.ccg.nxtar.interfaces.NetworkConnectionListener;
+import ve.ucv.ciens.ccg.nxtar.network.monitors.VideoFrameMonitor;
 import ve.ucv.ciens.ccg.nxtar.utils.ProjectConstants;
 
 import com.badlogic.gdx.Gdx;
@@ -33,23 +34,14 @@ public class VideoStreamingThread extends Thread {
 	private static final String TAG = "NXTAR_CORE_VIDEOTHREAD";
 	private static final String CLASS_NAME = VideoStreamingThread.class.getSimpleName();
 
-	//private enum ProtocolState_t {WAIT_FOR_START, SEND_CONTINUE, RECEIVE_DATA, SEND_ACK_NEXT, SEND_ACK_WAIT, PAUSED, END_STREAM};
-
 	private NetworkConnectionListener netListener;
-	//private ServerSocket server;
 	private DatagramSocket socket;
-	//private Toaster toaster;
-	//private ProtocolState_t protocolState;
 	private boolean protocolStarted;
-	/*private boolean pauseProtocol;
-	private boolean endProtocol;*/
 	private boolean done;
 	private boolean pause;
 	private boolean coreNotified;
 	private Object protocolPauseMonitor;
 	private Socket client;
-	//private ObjectInputStream reader;
-	//private ObjectOutputStream writer;
 	private VideoFrameMonitor frameMonitor;
 	private long then;
 	private long now;
@@ -66,18 +58,13 @@ public class VideoStreamingThread extends Thread {
 		fps = 0;
 		lostFramesPerSecond = 0;
 		netListener = null;
-		//toaster = null;
 		protocolStarted = false;
-		/*endProtocol = false;
-		pauseProtocol = false;*/
 		done = false;
 		coreNotified = false;
-		//protocolState = ProtocolState_t.WAIT_FOR_START;
 		protocolPauseMonitor = new Object();
 		frameMonitor = VideoFrameMonitor.getInstance();
 
 		try{
-			//server = new ServerSocket(ProjectConstants.SERVER_TCP_PORT_1);
 			socket = new DatagramSocket(ProjectConstants.SERVER_TCP_PORT_1);
 		}catch(IOException io){
 			Gdx.app.error(TAG, CLASS_NAME + ".VideoStreamingThread() :: Error creating server: " + io.getMessage(), io);
@@ -92,26 +79,15 @@ public class VideoStreamingThread extends Thread {
 		return SingletonHolder.INSTANCE;
 	}
 
-	/*public VideoStreamingThread setToaster(Toaster toaster){
-		this.toaster = toaster;
-		return this;
-	}*/
-
 	public void addNetworkConnectionListener(NetworkConnectionListener listener){
 		netListener = listener;
 	}
 
-	/*private void toast(String message){
-		if(toaster != null)
-			toaster.showShortToast(message);
-	}*/
-
 	public void startStreaming(){
 		if(!protocolStarted){
 			Gdx.app.debug(TAG, CLASS_NAME + ".startStreaming() :: Requesting protocol start.");
 			synchronized(protocolPauseMonitor){
 				protocolStarted = true;
-				//protocolState = ProtocolState_t.SEND_CONTINUE;
 				protocolPauseMonitor.notifyAll();
 			}
 		}
@@ -120,7 +96,6 @@ public class VideoStreamingThread extends Thread {
 	public void pauseStreaming(){
 		if(protocolStarted){
 			Gdx.app.debug(TAG, CLASS_NAME + ".pauseStreaming() :: Requesting protocol pause.");
-			//pauseProtocol = true;
 		}else
 			return;
 	}
@@ -129,7 +104,6 @@ public class VideoStreamingThread extends Thread {
 		if(protocolStarted){
 			Gdx.app.debug(TAG, CLASS_NAME + ".resumeStreaming() :: Requesting protocol resume.");
 			synchronized(protocolPauseMonitor){
-				//pauseProtocol = false;
 				protocolPauseMonitor.notifyAll();
 			}
 		}else
@@ -139,7 +113,6 @@ public class VideoStreamingThread extends Thread {
 	public void finishStreaming(){
 		if(protocolStarted){
 			Gdx.app.debug(TAG, CLASS_NAME + ".finishStreaming() :: Requesting protocol end.");
-			//endProtocol = true;
 		}else
 			return;
 	}
@@ -148,202 +121,6 @@ public class VideoStreamingThread extends Thread {
 		done = true;
 	}
 
-	/*@Override
-	public void run(){
-		Object tmpMessage;
-		VideoStreamingControlMessage controlMessage;
-		VideoFrameDataMessage dataMessage;
-
-		// Listen on the server socket until a client successfully connects.
-		do{
-			try{
-				Gdx.app.debug(TAG, CLASS_NAME + ".run() :: Listening for client.");
-				client = server.accept();
-				if(netListener != null)
-					netListener.networkStreamConnected(THREAD_NAME);
-				writer = new ObjectOutputStream(client.getOutputStream());
-				reader = new ObjectInputStream(client.getInputStream());
-				toast("Client connected");
-			}catch(IOException io){
-				Gdx.app.error(TAG, CLASS_NAME + ".run() :: Error accepting client: " + io.getMessage(), io);
-				client = null;
-			}
-		}while(client != null && !client.isConnected());
-
-		while(!done){
-			switch(protocolState){
-			case WAIT_FOR_START:
-				Gdx.app.debug(TAG, CLASS_NAME + ".run() :: State is WAIT_FOR_START.");
-				// If the app has not started the protocol then wait.
-				synchronized(protocolPauseMonitor){
-					while(!protocolStarted){
-						try{
-							Gdx.app.debug(TAG, CLASS_NAME + ".run() :: Protocol has not started, waiting.");
-							protocolPauseMonitor.wait();
-						}catch(InterruptedException ie){ }
-					}
-				}
-				break;
-
-			case SEND_CONTINUE:
-				Gdx.app.debug(TAG, CLASS_NAME + ".run() :: State is SEND_CONTINUE.");
-				// Prepare the message.
-				controlMessage = new VideoStreamingControlMessage();
-				if(!endProtocol){
-					Gdx.app.debug(TAG, CLASS_NAME + ".run() :: Preparing STREAM_CONTROL_END message.");
-					controlMessage.message = VideoStreamingProtocol.STREAM_CONTROL_END;
-				}else{
-					Gdx.app.debug(TAG, CLASS_NAME + ".run() :: Preparing FLOW_CONTROL_CONTINUE message.");
-					controlMessage.message = VideoStreamingProtocol.FLOW_CONTROL_CONTINUE;
-				}
-
-				// Send it!
-				try{
-					writer.writeObject(controlMessage);
-				}catch(IOException io){
-					Gdx.app.error(TAG, CLASS_NAME + ".run() :: Error sending message: " + io.getMessage(), io);
-				}finally{
-					protocolState = ProtocolState_t.RECEIVE_DATA;
-				}
-				break;
-
-			case RECEIVE_DATA:
-				Gdx.app.debug(TAG, CLASS_NAME + ".run() :: State is RECEIVE_DATA.");
-
-				try{
-					tmpMessage = reader.readObject();
-				}catch(IOException io){
-					Gdx.app.error(TAG, CLASS_NAME + ".run() :: IOException while receiving message: " + io.getMessage(), io);
-					break;
-				}catch(ClassNotFoundException cn){
-					Gdx.app.error(TAG, CLASS_NAME + ".run() :: ClassNotFoundException while receiving message: " + cn.getMessage(), cn);
-					break;
-				}
-
-				if(tmpMessage instanceof VideoStreamingControlMessage){
-					Gdx.app.debug(TAG, CLASS_NAME + ".run() :: Received a control message.");
-					controlMessage = (VideoStreamingControlMessage) tmpMessage;
-					// TODO: handle this case correctly.
-
-				}else if(tmpMessage instanceof VideoFrameDataMessage){
-					Gdx.app.debug(TAG, CLASS_NAME + ".run() :: Received a data message.");
-					dataMessage = (VideoFrameDataMessage) tmpMessage;
-
-					Gdx.app.debug(TAG, CLASS_NAME + ".run() :: Received frame dimensions are: " +
-							Integer.toString(dataMessage.imageWidth) + "x" + Integer.toString(dataMessage.imageHeight));
-					frameMonitor.setFrameDimensions(dataMessage.imageWidth, dataMessage.imageHeight);
-					frameMonitor.setNewFrame(dataMessage.data);
-
-					if(pauseProtocol)
-						protocolState = ProtocolState_t.SEND_ACK_WAIT;
-					else
-						protocolState = ProtocolState_t.SEND_ACK_NEXT;
-
-				}else{
-					Gdx.app.error(TAG, CLASS_NAME + ".run() :: Unrecognized message received!.");
-					// TODO: handle this case correctly.
-					System.exit(ProjectConstants.EXIT_FAILURE);
-				}
-
-				break;
-
-			case SEND_ACK_NEXT:
-				Gdx.app.debug(TAG, CLASS_NAME + ".run() :: State is SEND_ACK_NEXT.");
-				// Prepare the message.
-				controlMessage = new VideoStreamingControlMessage();
-				if(!endProtocol){
-					Gdx.app.debug(TAG, CLASS_NAME + ".run() :: Preparing STREAM_CONTROL_END message.");
-					controlMessage.message = VideoStreamingProtocol.STREAM_CONTROL_END;
-				}else{
-					Gdx.app.debug(TAG, CLASS_NAME + ".run() :: Preparing ACK_SEND_NEXT message.");
-					controlMessage.message = VideoStreamingProtocol.ACK_SEND_NEXT;
-				}
-
-				// Send it!
-				try{
-					writer.writeObject(controlMessage);
-				}catch(IOException io){
-					Gdx.app.error(TAG, CLASS_NAME + ".run() :: Error sending message: " + io.getMessage(), io);
-				}finally{
-					if(!endProtocol)
-						protocolState = ProtocolState_t.RECEIVE_DATA;
-					else
-						protocolState = ProtocolState_t.END_STREAM;
-				}
-				break;
-
-			case SEND_ACK_WAIT:
-				Gdx.app.debug(TAG, CLASS_NAME + ".run() :: State is SEND_ACK_WAIT.");
-				// Prepare the message.
-				controlMessage = new VideoStreamingControlMessage();
-				controlMessage.message = VideoStreamingProtocol.ACK_WAIT;
-
-				// Send it!
-				try{
-					writer.writeObject(controlMessage);
-				}catch(IOException io){
-					Gdx.app.error(TAG, CLASS_NAME + ".run() :: Error sending message: " + io.getMessage(), io);
-				}finally{
-					protocolState = ProtocolState_t.PAUSED;
-				}
-				break;
-
-			case PAUSED:
-				Gdx.app.debug(TAG, CLASS_NAME + ".run() :: State is PAUSED.");
-				// The app requested to stop the protocol temporarily.
-				synchronized(protocolPauseMonitor){
-					while(pauseProtocol){
-						try{
-							Gdx.app.debug(TAG, CLASS_NAME + ".run() :: Protocol pause requested, waiting.");
-							protocolPauseMonitor.wait();
-						}catch(InterruptedException ie){ }
-					}
-				}
-				protocolState = ProtocolState_t.SEND_CONTINUE;
-				break;
-
-			case END_STREAM:
-				Gdx.app.debug(TAG, CLASS_NAME + ".run() :: State is END_STREAM.");
-				// Simply disconnect from the client and end the thread.
-				try{
-					client.close();
-				}catch(IOException io){
-					Gdx.app.error(TAG, CLASS_NAME + ".run() :: Error closing client: " + io.getMessage(), io);
-				}
-				done = true;
-				break;
-			}
-		}
-		Gdx.app.debug(TAG, CLASS_NAME + ".run() :: Thread finished.");
-	}*/
-
-	/*private void receiveImage(){
-		Object tmpMessage;
-		VideoFrameDataMessage dataMessage;
-
-		Gdx.app.debug(TAG, CLASS_NAME + ".run() :: Receiving data.");
-
-		try{
-			tmpMessage = (VideoFrameDataMessage)reader.readObject();
-		}catch(IOException io){
-			Gdx.app.error(TAG, CLASS_NAME + ".run() :: IOException while receiving message: " + io.getMessage());
-			return;
-		}catch(ClassNotFoundException cn){
-			Gdx.app.error(TAG, CLASS_NAME + ".run() :: ClassNotFoundException while receiving message: " + cn.getMessage());
-			return;
-		}
-
-		if(tmpMessage instanceof VideoFrameDataMessage){
-			Gdx.app.debug(TAG, CLASS_NAME + ".run() :: Received a data message.");
-			dataMessage = (VideoFrameDataMessage) tmpMessage;
-			frameMonitor.setFrameDimensions(dataMessage.imageWidth, dataMessage.imageHeight);
-			frameMonitor.setNewFrame(dataMessage.data);
-
-		}else{
-			Gdx.app.debug(TAG, CLASS_NAME + ".run() :: Received something unknown.");
-		}
-	}*/
-
 	private int byteArray2Int(byte[] array){
 		int number = 0;
 		for(int i = 0; i < 4; i++){
@@ -433,22 +210,6 @@ public class VideoStreamingThread extends Thread {
 	public void run(){
 		int frames = 0;
 		lostFrames = 0;
-		// Listen on the server socket until a client successfully connects.
-		/*do{
-			try{
-				Gdx.app.debug(TAG, CLASS_NAME + ".run() :: Listening for client.");
-				client = server.accept();
-				if(netListener != null)
-					netListener.networkStreamConnected(THREAD_NAME);
-				//writer = new ObjectOutputStream(client.getOutputStream());
-				reader = new ObjectInputStream(client.getInputStream());
-				toast("Client connected");
-			}catch(IOException io){
-				Gdx.app.error(TAG, CLASS_NAME + ".run() :: Error accepting client: " + io.getMessage(), io);
-				client = null;
-			}
-		}while(client != null && !client.isConnected());*/
-
 		then = System.currentTimeMillis();
 
 		while(!done){

src/ve/ucv/ciens/ccg/nxtar/network/monitors/VideoFrameMonitor.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package ve.ucv.ciens.ccg.nxtar.network;
+package ve.ucv.ciens.ccg.nxtar.network.monitors;
 
 import ve.ucv.ciens.ccg.nxtar.utils.Size;
 
@@ -63,9 +63,9 @@ public class VideoFrameMonitor{
 
 		Gdx.app.debug(TAG, CLASS_NAME + ".setNewFrame() :: Loading new frame in frameA.");
 		frameA = frame;
+		temp = frameA;
 		synchronized(frameMonitor){
 			Gdx.app.debug(TAG, CLASS_NAME + ".setNewFrame() :: Swapping frameA and frameB.");
-			temp = frameA;
 			frameA = frameB;
 			frameB = temp;
 			Gdx.app.debug(TAG, CLASS_NAME + ".setNewFrame() :: Swapping done.");

src/ve/ucv/ciens/ccg/nxtar/states/InGameState.java

@@ -15,15 +15,17 @@
  */
 package ve.ucv.ciens.ccg.nxtar.states;
 
+import java.util.Arrays;
+
 import ve.ucv.ciens.ccg.nxtar.NxtARCore;
 import ve.ucv.ciens.ccg.nxtar.exceptions.ImageTooBigException;
-import ve.ucv.ciens.ccg.nxtar.network.VideoFrameMonitor;
+import ve.ucv.ciens.ccg.nxtar.network.monitors.VideoFrameMonitor;
 import ve.ucv.ciens.ccg.nxtar.utils.ProjectConstants;
 import ve.ucv.ciens.ccg.nxtar.utils.Size;
 
 import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.Input;
 import com.badlogic.gdx.controllers.Controller;
-import com.badlogic.gdx.controllers.Controllers;
 import com.badlogic.gdx.controllers.PovDirection;
 import com.badlogic.gdx.controllers.mappings.Ouya;
 import com.badlogic.gdx.graphics.GL20;
@@ -31,8 +33,10 @@ import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.graphics.Pixmap;
 import com.badlogic.gdx.graphics.Texture;
 import com.badlogic.gdx.graphics.Texture.TextureFilter;
+import com.badlogic.gdx.graphics.Texture.TextureWrap;
 import com.badlogic.gdx.graphics.g2d.Sprite;
 import com.badlogic.gdx.graphics.g2d.TextureRegion;
+import com.badlogic.gdx.graphics.glutils.ShaderProgram;
 import com.badlogic.gdx.math.Vector2;
 import com.badlogic.gdx.math.Vector3;
 
@@ -40,8 +44,15 @@ public class InGameState extends BaseState{
 	private static final String TAG = "IN_GAME_STATE";
 	private static final String CLASS_NAME = InGameState.class.getSimpleName();
 
+	private static final String SHADER_PATH = "shaders/bckg/bckg";
+
 	private NxtARCore core;
 
+	private float u_scaling[];
+	protected Sprite background;
+	private Texture backgroundTexture;
+	private ShaderProgram backgroundShader;
+
 	// Cameras.
 	private OrthographicCamera camera;
 	private OrthographicCamera pixelPerfectCamera;
@@ -67,8 +78,6 @@ public class InGameState extends BaseState{
 	private VideoFrameMonitor frameMonitor;
 
 	public InGameState(final NxtARCore core){
-		if(!Ouya.runningOnOuya) setUpButtons();
-
 		this.core = core;
 		frameMonitor = VideoFrameMonitor.getInstance();
 
@@ -79,6 +88,8 @@ public class InGameState extends BaseState{
 		pixelPerfectCamera = new OrthographicCamera(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
 		camera = new OrthographicCamera(1.0f, Gdx.graphics.getHeight() / Gdx.graphics.getWidth());
 
+		if(!Ouya.runningOnOuya) setUpButtons();
+
 		// Set up input handling support fields.
 		win2world = new Vector3(0.0f, 0.0f, 0.0f);
 		touchPointWorldCoords = new Vector2();
@@ -93,19 +104,48 @@ public class InGameState extends BaseState{
 		motorButtonsPointers[1] = -1;
 		motorButtonsPointers[2] = -1;
 		motorButtonsPointers[3] = -1;
+
+		backgroundTexture = new Texture(Gdx.files.internal("data/gfx/textures/tile_aqua.png"));
+		backgroundTexture.setWrap(TextureWrap.Repeat, TextureWrap.Repeat);
+		backgroundTexture.setFilter(TextureFilter.Linear, TextureFilter.Linear);
+		background = new Sprite(backgroundTexture);
+		background.setSize(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
+		background.setPosition(-(Gdx.graphics.getWidth() / 2), -(Gdx.graphics.getHeight() / 2));
+
+		backgroundShader = new ShaderProgram(Gdx.files.internal(SHADER_PATH + ".vert"), Gdx.files.internal(SHADER_PATH + ".frag"));
+		if(!backgroundShader.isCompiled()){
+			Gdx.app.error(TAG, CLASS_NAME + ".MainMenuStateBase() :: Failed to compile the background shader.");
+			Gdx.app.error(TAG, CLASS_NAME + backgroundShader.getLog());
+			backgroundShader = null;
+		}
+
+		u_scaling = new float[2];
+		u_scaling[0] = Gdx.graphics.getWidth() > Gdx.graphics.getHeight() ? 16.0f : 9.0f;
+		u_scaling[1] = Gdx.graphics.getHeight() > Gdx.graphics.getWidth() ? 16.0f : 9.0f;
 	}
 
 	@Override
 	public void render(float delta) {
 		Pixmap temp;
 		byte[] frame;
+		byte[] prevFrame = null;
 		Size dimensions = null;
 
 		Gdx.gl.glClearColor(1, 1, 1, 1);
 		Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
 
+		core.batch.setProjectionMatrix(pixelPerfectCamera.combined);
+		core.batch.begin();{
+			if(backgroundShader != null){
+				core.batch.setShader(backgroundShader);
+				backgroundShader.setUniform2fv("u_scaling", u_scaling, 0, 2);
+			}
+			background.draw(core.batch);
+			if(backgroundShader != null) core.batch.setShader(null);
+		}core.batch.end();
+
 		frame = frameMonitor.getCurrentFrame();
-		if(frame != null){
+		if(frame != null && !Arrays.equals(frame, prevFrame)){
 			dimensions = frameMonitor.getFrameDimensions();
 			temp = new Pixmap(frame, 0, dimensions.getWidth() * dimensions.getHeight());
 			if(videoFrame == null){
@@ -158,6 +198,8 @@ public class InGameState extends BaseState{
 				motorD.draw(core.batch);
 			}
 		}core.batch.end();
+		
+		prevFrame = frame;
 	}
 
 	@Override
@@ -198,6 +240,8 @@ public class InGameState extends BaseState{
 			buttonTexture.dispose();
 		if(videoFrame != null)
 			videoFrame.dispose();
+		backgroundTexture.dispose();
+		if(backgroundShader != null) backgroundShader.dispose();
 	}
 
 	private int getOptimalTextureSize(int imageSideLength) throws ImageTooBigException{
@@ -215,12 +259,16 @@ public class InGameState extends BaseState{
 	public void onStateSet(){
 		stateActive = true;
 		Gdx.input.setInputProcessor(this);
+		Gdx.input.setCatchBackKey(true);
+		Gdx.input.setCatchMenuKey(true);
 	}
 
 	@Override
 	public void onStateUnset(){
 		stateActive = false;
 		Gdx.input.setInputProcessor(null);
+		Gdx.input.setCatchBackKey(false);
+		Gdx.input.setCatchMenuKey(false);
 	}
 
 	private void setUpButtons(){
@@ -253,7 +301,10 @@ public class InGameState extends BaseState{
 
 	@Override
 	public boolean keyDown(int keycode) {
-		// TODO Auto-generated method stub
+		if(keycode == Input.Keys.BACK){
+			// TODO: Go to pause state.
+			return true;
+		}
 		return false;
 	}
 

src/ve/ucv/ciens/ccg/nxtar/states/MainMenuStateBase.java

@@ -18,16 +18,21 @@ package ve.ucv.ciens.ccg.nxtar.states;
 import ve.ucv.ciens.ccg.nxtar.utils.ProjectConstants;
 
 import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.Input;
 import com.badlogic.gdx.controllers.Controller;
 import com.badlogic.gdx.controllers.PovDirection;
 import com.badlogic.gdx.controllers.mappings.Ouya;
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.graphics.Texture;
+import com.badlogic.gdx.graphics.Texture.TextureFilter;
+import com.badlogic.gdx.graphics.Texture.TextureWrap;
 import com.badlogic.gdx.graphics.g2d.BitmapFont;
 import com.badlogic.gdx.graphics.g2d.NinePatch;
 import com.badlogic.gdx.graphics.g2d.Sprite;
+import com.badlogic.gdx.graphics.g2d.SpriteBatch;
 import com.badlogic.gdx.graphics.g2d.TextureRegion;
 import com.badlogic.gdx.graphics.g2d.freetype.FreeTypeFontGenerator;
+import com.badlogic.gdx.graphics.glutils.ShaderProgram;
 import com.badlogic.gdx.math.Rectangle;
 import com.badlogic.gdx.math.Vector3;
 import com.badlogic.gdx.scenes.scene2d.ui.TextButton;
@@ -37,15 +42,20 @@ import com.badlogic.gdx.scenes.scene2d.utils.NinePatchDrawable;
 
 public abstract class MainMenuStateBase extends BaseState{
 	protected static final String TAG = "MAIN_MENU";
+	private static final String CLASS_NAME = MainMenuStateBase.class.getSimpleName();
 
-	// Client connection helper fields.
+	private static final String SHADER_PATH = "shaders/bckg/bckg";
+
+	// Helper fields.
 	protected boolean clientConnected;
+	private float u_scaling[];
 
 	// Buttons and other gui components.
 	protected TextButton startButton;
 	protected Rectangle startButtonBBox;
 	protected Sprite clientConnectedLedOn;
 	protected Sprite clientConnectedLedOff;
+	protected Sprite background;
 
 	// Graphic data for the start button.
 	private Texture startButtonEnabledTexture;
@@ -59,8 +69,12 @@ public abstract class MainMenuStateBase extends BaseState{
 	// Other graphics.
 	private Texture clientConnectedLedOffTexture;
 	private Texture clientConnectedLedOnTexture;
+	private Texture backgroundTexture;
+	private ShaderProgram backgroundShader;
 
 	public MainMenuStateBase(){
+		TextureRegion region;
+
 		// Create the start button background.
 		startButtonEnabledTexture = new Texture(Gdx.files.internal("data/gfx/gui/Anonymous_Pill_Button_Yellow.png"));
 		startButtonEnabled9p = new NinePatch(new TextureRegion(startButtonEnabledTexture, 0, 0, startButtonEnabledTexture.getWidth(), startButtonEnabledTexture.getHeight()), 49, 49, 45, 45);
@@ -89,17 +103,35 @@ public abstract class MainMenuStateBase extends BaseState{
 		startButtonBBox = new Rectangle(0, 0, startButton.getWidth(), startButton.getHeight());
 
 		// Create the connection leds.
-		TextureRegion region;
 		clientConnectedLedOnTexture = new Texture("data/gfx/gui/Anonymous_Button_Green.png");
-		region = new TextureRegion(clientConnectedLedOnTexture, clientConnectedLedOnTexture.getWidth(), clientConnectedLedOnTexture.getHeight());
+		region = new TextureRegion(clientConnectedLedOnTexture);
 		clientConnectedLedOn = new Sprite(region);
 
 		clientConnectedLedOffTexture = new Texture("data/gfx/gui/Anonymous_Button_Red.png");
-		region = new TextureRegion(clientConnectedLedOffTexture, clientConnectedLedOffTexture.getWidth(), clientConnectedLedOffTexture.getHeight());
+		region = new TextureRegion(clientConnectedLedOffTexture);
 		clientConnectedLedOff = new Sprite(region);
 
-		clientConnected = false;
+		// Set up the background.
+		backgroundTexture = new Texture(Gdx.files.internal("data/gfx/textures/tile_aqua.png"));
+		backgroundTexture.setWrap(TextureWrap.Repeat, TextureWrap.Repeat);
+		backgroundTexture.setFilter(TextureFilter.Linear, TextureFilter.Linear);
+		region = new TextureRegion(backgroundTexture);
+		background = new Sprite(backgroundTexture);
+		background.setSize(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
+		background.setPosition(-(Gdx.graphics.getWidth() / 2), -(Gdx.graphics.getHeight() / 2));
 
+		backgroundShader = new ShaderProgram(Gdx.files.internal(SHADER_PATH + ".vert"), Gdx.files.internal(SHADER_PATH + ".frag"));
+		if(!backgroundShader.isCompiled()){
+			Gdx.app.error(TAG, CLASS_NAME + ".MainMenuStateBase() :: Failed to compile the background shader.");
+			Gdx.app.error(TAG, CLASS_NAME + backgroundShader.getLog());
+			backgroundShader = null;
+		}
+
+		u_scaling = new float[2];
+		u_scaling[0] = Gdx.graphics.getWidth() > Gdx.graphics.getHeight() ? 16.0f : 9.0f;
+		u_scaling[1] = Gdx.graphics.getHeight() > Gdx.graphics.getWidth() ? 16.0f : 9.0f;
+
+		clientConnected = false;
 		stateActive = false;
 	}
 
@@ -127,19 +159,34 @@ public abstract class MainMenuStateBase extends BaseState{
 		startButtonPressedTexture.dispose();
 		clientConnectedLedOnTexture.dispose();
 		clientConnectedLedOffTexture.dispose();
+		backgroundTexture.dispose();
+		if(backgroundShader != null) backgroundShader.dispose();
 		font.dispose();
 	}
 
+	protected void drawBackground(SpriteBatch batch){
+		if(backgroundShader != null){
+			batch.setShader(backgroundShader);
+			backgroundShader.setUniform2fv("u_scaling", u_scaling, 0, 2);
+		}
+		background.draw(batch);
+		if(backgroundShader != null) batch.setShader(null);
+	}
+
 	@Override
 	public void onStateSet(){
 		stateActive = true;
 		Gdx.input.setInputProcessor(this);
+		Gdx.input.setCatchBackKey(true);
+		Gdx.input.setCatchMenuKey(true);
 	}
 
 	@Override
 	public void onStateUnset(){
 		stateActive = false;
 		Gdx.input.setInputProcessor(null);
+		Gdx.input.setCatchBackKey(false);
+		Gdx.input.setCatchMenuKey(false);
 	}
 
 	public void onClientConnected(){
@@ -153,6 +200,10 @@ public abstract class MainMenuStateBase extends BaseState{
 
 	@Override
 	public boolean keyDown(int keycode){
+		if(keycode == Input.Keys.BACK){
+			// TODO: Go to pause state.
+			return true;
+		}
 		return false;
 	}
 

src/ve/ucv/ciens/ccg/nxtar/states/OuyaMainMenuState.java

@@ -65,6 +65,7 @@ public class OuyaMainMenuState extends MainMenuStateBase{
 
 		core.batch.setProjectionMatrix(pixelPerfectCamera.combined);
 		core.batch.begin();{
+			drawBackground(core.batch);
 			if(clientConnected){
 				clientConnectedLedOn.draw(core.batch);
 			}else{

src/ve/ucv/ciens/ccg/nxtar/states/PauseState.java

@@ -17,9 +17,7 @@ package ve.ucv.ciens.ccg.nxtar.states;
 
 import ve.ucv.ciens.ccg.nxtar.NxtARCore;
 
-import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.controllers.Controller;
-import com.badlogic.gdx.controllers.Controllers;
 import com.badlogic.gdx.controllers.PovDirection;
 import com.badlogic.gdx.math.Vector3;
 

src/ve/ucv/ciens/ccg/nxtar/states/TabletMainMenuState.java

@@ -62,6 +62,7 @@ public class TabletMainMenuState extends MainMenuStateBase{
 
 		core.batch.setProjectionMatrix(pixelPerfectCamera.combined);
 		core.batch.begin();{
+			drawBackground(core.batch);
 			if(clientConnected){
 				clientConnectedLedOn.draw(core.batch);
 			}else{