Added Alien Blaster project with SDL for Android

alienblaster/project/src/DemoActivity.java

@@ -0,0 +1,170 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * 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.
+ *
+ * This is a small port of the "San Angeles Observation" demo
+ * program for OpenGL ES 1.x. For more details, see:
+ *
+ *    http://jet.ro/visuals/san-angeles-observation/
+ *
+ * This program demonstrates how to use a GLSurfaceView from Java
+ * along with native OpenGL calls to perform frame rendering.
+ *
+ * Touching the screen will start/stop the animation.
+ *
+ * Note that the demo runs much faster on the emulator than on
+ * real devices, this is mainly due to the following facts:
+ *
+ * - the demo sends bazillions of polygons to OpenGL without
+ *   even trying to do culling. Most of them are clearly out
+ *   of view.
+ *
+ * - on a real device, the GPU bus is the real bottleneck
+ *   that prevent the demo from getting acceptable performance.
+ *
+ * - the software OpenGL engine used in the emulator uses
+ *   the system bus instead, and its code rocks :-)
+ *
+ * Fixing the program to send less polygons to the GPU is left
+ * as an exercise to the reader. As always, patches welcomed :-)
+ */
+package de.schwardtnet.alienblaster;
+
+import javax.microedition.khronos.egl.EGLConfig;
+import javax.microedition.khronos.opengles.GL10;
+
+import android.app.Activity;
+import android.content.Context;
+import android.opengl.GLSurfaceView;
+import android.os.Bundle;
+import android.view.MotionEvent;
+import android.view.KeyEvent;
+
+class LoadLibrary {
+    public LoadLibrary() {}
+    static {
+        System.loadLibrary("alienblaster");
+    }
+}
+
+class DemoRenderer implements GLSurfaceView.Renderer {
+
+    public void onSurfaceCreated(GL10 gl, EGLConfig config) {
+        nativeInit();
+    }
+
+    public void onSurfaceChanged(GL10 gl, int w, int h) {
+        //gl.glViewport(0, 0, w, h);
+        nativeResize(w, h);
+    }
+
+    public void onDrawFrame(GL10 gl) {
+        nativeRender();
+    }
+
+    public void exitApp() {
+         nativeDone();
+    };
+
+    private static native void nativeInit();
+    private static native void nativeResize(int w, int h);
+    private static native void nativeRender();
+    private static native void nativeDone();
+}
+
+class DemoGLSurfaceView extends GLSurfaceView {
+    public DemoGLSurfaceView(Activity context) {
+        super(context);
+        mParent = context;
+        mRenderer = new DemoRenderer();
+        setRenderer(mRenderer);
+    }
+
+    @Override
+    public boolean onTouchEvent(final MotionEvent event) {
+        int action = -1;
+        if( event.getAction() == MotionEvent.ACTION_DOWN )
+        	action = 0;
+        if( event.getAction() == MotionEvent.ACTION_UP )
+        	action = 1;
+        if( event.getAction() == MotionEvent.ACTION_MOVE )
+        	action = 2;
+        if (  action >= 0 ) {
+            nativeMouse( (int)event.getX(), (int)event.getY(), action );
+        }
+        return true;
+    }
+	
+	@Override
+	public boolean onKeyDown(int keyCode, final KeyEvent event) {
+         if(keyCode == KeyEvent.KEYCODE_BACK) {
+            mParent.finish();
+         } else {
+           nativeKey( keyCode, 1 );
+         }
+         return true;
+     }
+	
+	@Override
+	public boolean onKeyUp(int keyCode, final KeyEvent event) {
+         nativeKey( keyCode, 0 );
+         return true;
+     }
+     
+     public void exitApp() {
+         mRenderer.exitApp();
+     };
+
+    DemoRenderer mRenderer;
+    Activity mParent;
+
+    private static native void nativeMouse( int x, int y, int action );
+    private static native void nativeKey( int keyCode, int down );
+}
+
+public class DemoActivity extends Activity {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        mLoadLibraryStub = new LoadLibrary();
+        mGLView = new DemoGLSurfaceView(this);
+        setContentView(mGLView);
+        // Receive keyboard events
+        mGLView.setFocusableInTouchMode(true);
+        mGLView.setFocusable(true);
+        mGLView.requestFocus();
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+        mGLView.onPause();
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        mGLView.onResume();
+    }
+
+    @Override
+    protected void onStop() {
+        super.onStop();
+        mGLView.exitApp();
+        finish();
+    }
+
+    private DemoGLSurfaceView mGLView;
+    private LoadLibrary mLoadLibraryStub;
+}