#100 Adds comments about game loop & update method and removes interface

frontend/core/src/com/gameware/game/GameWare.java

@@ -4,6 +4,7 @@ import com.badlogic.gdx.ApplicationAdapter;
 import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.audio.Music;
 import com.badlogic.gdx.files.FileHandle;
+import com.badlogic.gdx.graphics.GL20;
 import com.badlogic.gdx.graphics.g2d.SpriteBatch;
 import com.badlogic.gdx.utils.Json;
 import com.badlogic.gdx.utils.JsonReader;
@@ -27,9 +28,10 @@ import java.util.Map;
 /*
 
 	GameWare is the main class, it is the first class to be created. It is called from the AndroidLauncher.
-	It extends LibGDX's ApplicationAdapter, and the render method delegates to the GameStateManager.
+	It extends LibGDX's ApplicationAdapter, and the render method (regarded as the game loop)
+	delegates to the GameStateManager.
 
-	Patterns: Singleton, Delegation
+	Patterns: Singleton, Delegation, Game Loop
 */
 
 public class GameWare extends ApplicationAdapter {
@@ -89,6 +91,8 @@ public class GameWare extends ApplicationAdapter {
 
 	@Override
 	public void render () {
+//		Game loop
+
 //      Clearing the screen
 	    Gdx.gl.glClearColor(1, 1, 1, 1);
 		Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

frontend/core/src/com/gameware/game/models/ModelInterface.java

@@ -3,9 +3,8 @@ package com.gameware.game.models;
 /*
     Data model interface for converting json objects to Java objects
 
-    Patterns: Interface pattern, pipe-and-filter pattern
+    Patterns: Pipe-and-filter
 
-    Implementation of the interface from the Interface pattern.
     When implemented the class must be a model, in other words a data oriented java object.
     Data models used for the filters input/output ports in the QueryIntermediate's pipe-and-filter implementation.
 

frontend/core/src/com/gameware/game/sprites/Sprite.java

@@ -7,7 +7,7 @@ import com.badlogic.gdx.math.Vector3;
     Abstract super class/union for game-sprites. Super class instead of interface because of
     necessary variables all sprites needs to have
 
-    Patterns: Union
+    Patterns: Union, Update method
 */
 
 public abstract class Sprite {

frontend/core/src/com/gameware/game/states/GameStateManager.java

@@ -7,7 +7,7 @@ import java.util.Stack;
 /*
     GameStateManager keeps track of which state is the current one. Delegates to the correct state.
 
-    Patterns: State, Delegation
+    Patterns: State, Delegation, Update method
  */
 
 public class GameStateManager {
@@ -40,6 +40,7 @@ public class GameStateManager {
         states.push(state);
     }
 
+//    Update method (delegates to current state)
     public void update(float dt){
         states.peek().update(dt);
     }

frontend/core/src/com/gameware/game/states/State.java

@@ -11,9 +11,9 @@ import com.gameware.game.GameWare;
     State is the super class/union of all the states in the application.
 
     A state has their own logic and rendering. State contains common variables between
-    MenuStateUnion and PlayStateUnion.
+    MenuStateUnion and PlayStateUnion. All states must have their own update method.
 
-    Patterns: State, Union Design
+    Patterns: State, Union Design, Update method
 */
 
 public abstract class State {
@@ -45,6 +45,7 @@ public abstract class State {
 //    Abstract state methods
     protected abstract void handleInput();
 
+//    Requires all states to have the update method
     public abstract void update(float dt);
 
     public abstract void render(SpriteBatch sb);