Added state transitions with Universal Tween Library.

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

@@ -29,13 +29,24 @@ import ve.ucv.ciens.ccg.nxtar.states.PauseState;
 import ve.ucv.ciens.ccg.nxtar.states.TabletMainMenuState;
 import ve.ucv.ciens.ccg.nxtar.utils.ProjectConstants;
 
+import aurelienribon.tweenengine.Tween;
+import aurelienribon.tweenengine.TweenEquation;
+import aurelienribon.tweenengine.TweenEquations;
+import aurelienribon.tweenengine.primitives.MutableFloat;
+
 import com.badlogic.gdx.Application;
 import com.badlogic.gdx.Game;
 import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.controllers.Controllers;
 import com.badlogic.gdx.controllers.mappings.Ouya;
+import com.badlogic.gdx.graphics.Color;
+import com.badlogic.gdx.graphics.GL20;
 import com.badlogic.gdx.graphics.OrthographicCamera;
+import com.badlogic.gdx.graphics.Pixmap;
+import com.badlogic.gdx.graphics.Pixmap.Format;
+import com.badlogic.gdx.graphics.Texture;
 import com.badlogic.gdx.graphics.g2d.BitmapFont;
+import com.badlogic.gdx.graphics.g2d.Sprite;
 import com.badlogic.gdx.graphics.g2d.SpriteBatch;
 
 /**
@@ -93,12 +104,18 @@ public class NxtARCore extends Game implements NetworkConnectionListener{
 	private VideoStreamingThread videoThread;
 	private RobotControlThread robotThread;
 
-	// Overlay font.
+	// Overlays.
 	private OrthographicCamera pixelPerfectCamera;
 	private float fontX;
 	private float fontY;
 	private BitmapFont font;
 
+	private Texture fadeTexture;
+	private MutableFloat alpha;
+	private Tween fadeOut;
+	private Tween fadeIn;
+	private boolean fading;
+
 	/**
 	 * <p>Set up the basic application fields.</p>
 	 */
@@ -135,48 +152,65 @@ public class NxtARCore extends Game implements NetworkConnectionListener{
 		// Set up fields.
 		batch = new SpriteBatch();
 
-		if(ProjectConstants.DEBUG)
+		pixelPerfectCamera = new OrthographicCamera(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
-			pixelPerfectCamera = new OrthographicCamera(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());{
-				// Set up the overlay font.
-				fontX = -((Gdx.graphics.getWidth() * ProjectConstants.OVERSCAN) / 2) + 10;
-				fontY = ((Gdx.graphics.getHeight() * ProjectConstants.OVERSCAN) / 2) - 10;
 
-				font = new BitmapFont();
+		if(ProjectConstants.DEBUG){
-				font.setColor(1.0f, 1.0f, 0.0f, 1.0f);
+			// Set up the overlay font.
-				if(!Ouya.runningOnOuya){
+			fontX = -((Gdx.graphics.getWidth() * ProjectConstants.OVERSCAN) / 2) + 10;
-					font.setScale(1.0f);
+			fontY = ((Gdx.graphics.getHeight() * ProjectConstants.OVERSCAN) / 2) - 10;
-				}else{
+
-					font.setScale(2.5f);
+			font = new BitmapFont();
-				}
+			font.setColor(1.0f, 1.0f, 0.0f, 1.0f);
+			if(!Ouya.runningOnOuya){
+				font.setScale(1.0f);
+			}else{
+				font.setScale(2.5f);
 			}
+		}
 
-			// Start networking.
+		// Start networking.
-			mcastEnabler.enableMulticast();
+		mcastEnabler.enableMulticast();
 
-			Gdx.app.debug(TAG, CLASS_NAME + ".create() :: Creating network threads");
+		Gdx.app.debug(TAG, CLASS_NAME + ".create() :: Creating network threads");
-			serviceDiscoveryThread = ServiceDiscoveryThread.getInstance();
+		serviceDiscoveryThread = ServiceDiscoveryThread.getInstance();
-			videoThread = VideoStreamingThread.getInstance()/*.setToaster(toaster)*/;
+		videoThread = VideoStreamingThread.getInstance()/*.setToaster(toaster)*/;
-			//robotThread = RobotControlThread.getInstance().setToaster(toaster);
+		//robotThread = RobotControlThread.getInstance().setToaster(toaster);
 
-			serviceDiscoveryThread.start();
+		serviceDiscoveryThread.start();
-			videoThread.start();
+		videoThread.start();
-			videoThread.startStreaming();
+		videoThread.startStreaming();
-			videoThread.addNetworkConnectionListener(this);
+		videoThread.addNetworkConnectionListener(this);
-			//robotThread.start();
+		//robotThread.start();
 
-			// Set the current and next states.
+		// Set the current and next states.
-			currState = game_states_t.MAIN_MENU;
+		currState = game_states_t.MAIN_MENU;
-			nextState = null;
+		nextState = null;
-			this.setScreen(states[currState.getValue()]);
+		this.setScreen(states[currState.getValue()]);
-			states[currState.getValue()].onStateSet();
+		states[currState.getValue()].onStateSet();
 
-			// Set initial input handlers.
+		// Prepare the fadeToBlack sprite;
-			Gdx.input.setInputProcessor(states[currState.getValue()]);
+		Pixmap pixmap = new Pixmap(Gdx.graphics.getWidth(), Gdx.graphics.getHeight(), Format.RGBA4444);
-			Controllers.addListener(states[currState.getValue()]);
+		pixmap.setColor(0, 0, 0, 1);
+		pixmap.fill();
+		fadeTexture = new Texture(pixmap);
+		pixmap.dispose();
 
-			// Anything else.
+		alpha = new MutableFloat(0.0f);
-			//Gdx.app.setLogLevel(Application.LOG_DEBUG);
+		fadeOut = Tween.to(alpha, 0, 0.5f).target(1.0f).ease(TweenEquations.easeInQuint);
-			Gdx.app.setLogLevel(Application.LOG_NONE);
+		fadeIn = Tween.to(alpha, 0, 0.5f).target(0.0f).ease(TweenEquations.easeInQuint);
+
+		fading = false;
+
+		// Set initial input handlers.
+		Gdx.input.setInputProcessor(states[currState.getValue()]);
+		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);
+
+		//batch.setBlendFunction(GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA);
 	}
 
 	public void render(){
@@ -186,18 +220,53 @@ public class NxtARCore extends Game implements NetworkConnectionListener{
 		if(nextState != null){
 			states[currState.getValue()].onStateUnset();
 
-			currState = nextState;
+			if(!fadeOut.isStarted()){
-			nextState = null;
+				Gdx.app.log(TAG, CLASS_NAME + ".onRender() :: Starting fade out.");
+				fadeOut.start();
+				fading = true;
+			}else{
+				Gdx.app.log(TAG, CLASS_NAME + ".onRender() :: Updating fade out.");
+				fadeOut.update(Gdx.graphics.getDeltaTime());
 
-			states[currState.getValue()].onStateSet();
+				if(fadeOut.isFinished()){
+					currState = nextState;
+					nextState = null;
 
-			setScreen(states[currState.getValue()]);
+					states[currState.getValue()].onStateSet();
+
+					setScreen(states[currState.getValue()]);
+
+					Gdx.app.log(TAG, CLASS_NAME + ".onRender() :: Freeing fade out.");
+					fadeOut.free();
+					fadeOut = Tween.to(alpha, 0, 0.5f).target(1.0f).ease(TweenEquations.easeInQuint);
+					fadeIn.start();
+				}
+			}
+		}
+
+		if(fadeIn.isStarted()){
+			if(!fadeIn.isFinished()){
+				fadeIn.update(Gdx.graphics.getDeltaTime());
+			}else{
+				fading = false;
+				fadeIn.free();
+				fadeIn = Tween.to(alpha, 0, 0.5f).target(0.0f).ease(TweenEquations.easeInQuint);
+			}
+		}
+
+		if(fading){
+			batch.setProjectionMatrix(pixelPerfectCamera.combined);
+			batch.begin();{
+				batch.setColor(1, 1, 1, alpha.floatValue());
+				batch.draw(fadeTexture, -(Gdx.graphics.getWidth() / 2), -(Gdx.graphics.getHeight() / 2));
+				batch.setColor(1, 1, 1, 1);
+			}batch.end();
 		}
 
 		if(ProjectConstants.DEBUG){
-			// Draw the FPS overlay.
 			batch.setProjectionMatrix(pixelPerfectCamera.combined);
 			batch.begin();{
+				// Draw the FPS overlay.
 				font.draw(batch, String.format("Render FPS:        %d", Gdx.graphics.getFramesPerSecond()), fontX, fontY);
 				font.draw(batch, String.format("Total  stream FPS: %d", videoThread.getFps()), fontX, fontY - font.getCapHeight() - 5);
 				font.draw(batch, String.format("Lost   stream FPS: %d", videoThread.getLostFrames()), fontX, fontY - (2 * font.getCapHeight()) - 10);
@@ -218,6 +287,7 @@ public class NxtARCore extends Game implements NetworkConnectionListener{
 	public void dispose(){
 		// Finish network threads.
 		videoThread.finish();
+		fadeTexture.dispose();
 
 		// Dispose graphic objects.
 		batch.dispose();

src/ve/ucv/ciens/ccg/nxtar/network/protocols/VideoStreamingProtocol.java

@@ -1,46 +0,0 @@
-/*
- * Copyright (C) 2013 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.protocols;
-
-public final class VideoStreamingProtocol{
-	public static final byte STREAM_CONTROL_END = 0x10;
-	public static final byte ACK_SEND_NEXT = 0x20;
-	public static final byte ACK_WAIT = 0x30;
-	public static final byte FLOW_CONTROL_WAIT = 0x40;
-	public static final byte FLOW_CONTROL_CONTINUE = 0x50;
-	public static final byte IMAGE_DATA = 0x60;
-	public static final byte UNRECOGNIZED = (byte)0xFF;
-
-	public static boolean checkValidityOfMessage(byte message){
-		boolean validity;
-
-		switch(message){
-		case STREAM_CONTROL_END:
-		case ACK_SEND_NEXT:
-		case ACK_WAIT:
-		case FLOW_CONTROL_WAIT:
-		case FLOW_CONTROL_CONTINUE:
-		case IMAGE_DATA:
-		case UNRECOGNIZED:
-			validity = true;
-			break;
-		default:
-			validity = false;
-		}
-
-		return validity;
-	}
-}

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

@@ -18,6 +18,7 @@ package ve.ucv.ciens.ccg.nxtar.states;
 import java.util.Arrays;
 
 import ve.ucv.ciens.ccg.nxtar.NxtARCore;
+import ve.ucv.ciens.ccg.nxtar.NxtARCore.game_states_t;
 import ve.ucv.ciens.ccg.nxtar.exceptions.ImageTooBigException;
 import ve.ucv.ciens.ccg.nxtar.network.monitors.VideoFrameMonitor;
 import ve.ucv.ciens.ccg.nxtar.utils.ProjectConstants;
@@ -302,7 +303,7 @@ public class InGameState extends BaseState{
 	@Override
 	public boolean keyDown(int keycode) {
 		if(keycode == Input.Keys.BACK){
-			// TODO: Go to pause state.
+			core.nextState = game_states_t.MAIN_MENU;
 			return true;
 		}
 		return false;

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

@@ -65,7 +65,9 @@ public class OuyaMainMenuState extends MainMenuStateBase{
 
 		core.batch.setProjectionMatrix(pixelPerfectCamera.combined);
 		core.batch.begin();{
+			core.batch.disableBlending();
 			drawBackground(core.batch);
+			core.batch.enableBlending();
 			if(clientConnected){
 				clientConnectedLedOn.draw(core.batch);
 			}else{

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

@@ -62,7 +62,10 @@ public class TabletMainMenuState extends MainMenuStateBase{
 
 		core.batch.setProjectionMatrix(pixelPerfectCamera.combined);
 		core.batch.begin();{
+			core.batch.disableBlending();
 			drawBackground(core.batch);
+			core.batch.enableBlending();
+
 			if(clientConnected){
 				clientConnectedLedOn.draw(core.batch);
 			}else{