Cleaned up LunarLander sample

Change-Id: If2cc44c8312cebce170d07c34c64ea2ce1e5b7ab

samples/LunarLander/src/com/example/android/lunarlander/LunarLander.java

@@ -21,7 +21,6 @@ import android.os.Bundle;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
-import android.view.Window;
 import android.widget.TextView;
 
 import com.example.android.lunarlander.LunarView.LunarThread;
@@ -58,7 +57,7 @@ public class LunarLander extends Activity {
 
     /**
      * Invoked during init to give the Activity a chance to set up its Menu.
-     * 
+     *
      * @param menu the Menu to which entries may be added
      * @return true
      */
@@ -79,7 +78,7 @@ public class LunarLander extends Activity {
 
     /**
      * Invoked when the user selects an item from the Menu.
-     * 
+     *
      * @param item the Menu entry which was selected
      * @return true if the Menu item was legit (and we consumed it), false
      *         otherwise
@@ -116,7 +115,7 @@ public class LunarLander extends Activity {
 
     /**
      * Invoked when the Activity is created.
-     * 
+     *
      * @param savedInstanceState a Bundle containing state saved from a previous
      *        execution, or null if this is a new execution
      */
@@ -157,7 +156,7 @@ public class LunarLander extends Activity {
     /**
      * Notification that something is about to happen, to give the Activity a
      * chance to save state.
-     * 
+     *
      * @param outState a Bundle into which this Activity should save its state
      */
     @Override

samples/LunarLander/src/com/example/android/lunarlander/LunarView.java

@@ -37,7 +37,7 @@ import android.widget.TextView;
 
 /**
  * View that draws, takes keystrokes, etc. for a simple LunarLander game.
- * 
+ *
  * Has a mode which RUNNING, PAUSED, etc. Has a x, y, dx, dy, ... capturing the
  * current ship physics. All x/y etc. are measured with (0,0) at the lower left.
  * updatePhysics() advances the physics based on realtime. draw() renders the
@@ -112,14 +112,14 @@ class LunarView extends SurfaceView implements SurfaceHolder.Callback {
 
         /**
          * Current height of the surface/canvas.
-         * 
+         *
          * @see #setSurfaceSize
          */
         private int mCanvasHeight = 1;
 
         /**
          * Current width of the surface/canvas.
-         * 
+         *
          * @see #setSurfaceSize
          */
         private int mCanvasWidth = 1;
@@ -321,7 +321,7 @@ class LunarView extends SurfaceView implements SurfaceHolder.Callback {
          * Restores game state from the indicated Bundle. Typically called when
          * the Activity is being restored after having been previously
          * destroyed.
-         * 
+         *
          * @param savedState Bundle containing the game state
          */
         public synchronized void restoreState(Bundle savedState) {
@@ -372,7 +372,7 @@ class LunarView extends SurfaceView implements SurfaceHolder.Callback {
         /**
          * Dump game state to the provided Bundle. Typically called when the
          * Activity is being suspended.
-         * 
+         *
          * @return Bundle with this view's state
          */
         public Bundle saveState(Bundle map) {
@@ -400,7 +400,7 @@ class LunarView extends SurfaceView implements SurfaceHolder.Callback {
 
         /**
          * Sets the current difficulty.
-         * 
+         *
          * @param difficulty
          */
         public void setDifficulty(int difficulty) {
@@ -423,7 +423,7 @@ class LunarView extends SurfaceView implements SurfaceHolder.Callback {
          * Passing true allows the thread to run; passing false will shut it
          * down if it's already running. Calling start() after this was most
          * recently called with false will result in an immediate shutdown.
-         * 
+         *
          * @param b true to run, false to shut down
          */
         public void setRunning(boolean b) {
@@ -433,7 +433,7 @@ class LunarView extends SurfaceView implements SurfaceHolder.Callback {
         /**
          * Sets the game mode. That is, whether we are running, paused, in the
          * failure state, in the victory state, etc.
-         * 
+         *
          * @see #setState(int, CharSequence)
          * @param mode one of the STATE_* constants
          */
@@ -446,7 +446,7 @@ class LunarView extends SurfaceView implements SurfaceHolder.Callback {
         /**
          * Sets the game mode. That is, whether we are running, paused, in the
          * failure state, in the victory state, etc.
-         * 
+         *
          * @param mode one of the STATE_* constants
          * @param message string to add to screen or null
          */
@@ -509,7 +509,7 @@ class LunarView extends SurfaceView implements SurfaceHolder.Callback {
                 mCanvasHeight = height;
 
                 // don't forget to resize the background image
-                mBackgroundImage = mBackgroundImage.createScaledBitmap(
+                mBackgroundImage = Bitmap.createScaledBitmap(
                         mBackgroundImage, width, height, true);
             }
         }
@@ -527,7 +527,7 @@ class LunarView extends SurfaceView implements SurfaceHolder.Callback {
 
         /**
          * Handles a key-down event.
-         * 
+         *
          * @param keyCode the key that was pressed
          * @param msg the original event object
          * @return true
@@ -539,8 +539,6 @@ class LunarView extends SurfaceView implements SurfaceHolder.Callback {
                 if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) okStart = true;
                 if (keyCode == KeyEvent.KEYCODE_S) okStart = true;
 
-                boolean center = (keyCode == KeyEvent.KEYCODE_DPAD_UP);
-
                 if (okStart
                         && (mMode == STATE_READY || mMode == STATE_LOSE || mMode == STATE_WIN)) {
                     // ready-to-start -> start
@@ -579,7 +577,7 @@ class LunarView extends SurfaceView implements SurfaceHolder.Callback {
 
         /**
          * Handles a key-up event.
-         * 
+         *
          * @param keyCode the key that was pressed
          * @param msg the original event object
          * @return true if the key was handled and consumed, or else false
@@ -807,7 +805,7 @@ class LunarView extends SurfaceView implements SurfaceHolder.Callback {
 
     /**
      * Fetches the animation thread corresponding to this LunarView.
-     * 
+     *
      * @return the animation thread
      */
     public LunarThread getThread() {