这让我发疯，我不明白这有什么问题，当我尝试加载它时应用程序会崩溃，但如果我评论这一行：
playerShip.loadGLTexture(gl, this.context);
应用程序运行正常，但是，当然，没有纹理 :(
MainRenderer.java：
package com.example.galaga2d;
import java.nio.ByteBuffer;
import java.nio.FloatBuffer;
import java.nio.ByteOrder;
import java.util.Random;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.opengl.GLSurfaceView.Renderer;
import android.opengl.GLUtils;
public class MainRenderer implements Renderer {
Random rand = new Random();
private Context context;
public float radiusX = 20.0f;
public float radiusY = 20.0f;
public float playerX = 100.0f;
public float playerY = 300.0f;
public float enemyX = rand.nextFloat() * (30.0f - 1.0f) + 1.0f;
public float enemyY = 0.0f;
public Ship playerShip = new Ship();
public Astedoid enemyAstedoid = new Astedoid();
@Override
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
//! TEXTURES
playerShip.loadGLTexture(gl, this.context);
gl.glEnable(GL10.GL_TEXTURE_2D);
gl.glShadeModel(GL10.GL_SMOOTH);
//! TEXTURES
gl.glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
}
@Override
public void onDrawFrame(GL10 gl) {
gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
gl.glLoadIdentity();
if (playerShip.life != 0) {
playerShip.draw(gl, playerX);
gl.glLoadIdentity();
enemyY += enemyAstedoid.speed;
enemyAstedoid.draw(gl, enemyX, enemyY);
gl.glLoadIdentity();
float result = (float)Math.sqrt(Math.pow((playerX-enemyX), 2)+Math.pow((playerY-enemyY), 2));
if (result < 30.0f)
{
if(enemyAstedoid.collision == 0)
{
playerShip.life = playerShip.life - 1;
enemyAstedoid.collision |= 1;
}
} else {
enemyAstedoid.collision &= ~1;
}
/*
if (enemyX > playerX-radiusX && enemyX < playerX+radiusX && enemyY > playerY-radiusY && enemyY < playerY+radiusY && flag == 0) {
playerShip.life = playerShip.life - 1;
flag = 1;
} else {
flag = 0;
}
*/
gl.glLoadIdentity();
} else {
gl.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
}
}
@Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
gl.glViewport(0, 0, width, height);
gl.glMatrixMode(GL10.GL_PROJECTION);
gl.glLoadIdentity();
gl.glOrthof(0, width, height, 0, 1, -1);
gl.glViewport(0, 0, width, height);
gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glLoadIdentity();
}
// --------------------------------------------------------------------------------
class Ship {
public int life = 5;
public FloatBuffer ShipVertexBuffer;
public FloatBuffer ShipTextureBuffer;
//! TEXTURES
private int[] textures = new int[1];
//! TEXTURES
public float ShipVerticles[] = {
0, 0, // лево низ
0, 30, // лево вверх
30, 0, // право низ
30, 30 // право вверх
};
//! TEXTURES
public float ShipTextures[] = {
0.0f, 1.0f,
1.0f, 1.0f,
0.0f, 0.0f,
1.0f, 0.0f
};
//! TEXTURES
public Ship() {
//! Буффер вертексов
ByteBuffer bb = ByteBuffer.allocateDirect(36);
bb.order(ByteOrder.nativeOrder());
ShipVertexBuffer = bb.asFloatBuffer();
ShipVertexBuffer.put(ShipVerticles);
ShipVertexBuffer.position(0);
//! TEXTURES
bb = ByteBuffer.allocateDirect(ShipTextures.length * 4);
bb.order(ByteOrder.nativeOrder());
ShipTextureBuffer = bb.asFloatBuffer();
ShipTextureBuffer.put(ShipTextures);
ShipTextureBuffer.position(0);
//! TEXTURES
}
public void loadGLTexture(GL10 gl, Context context) {
// loading texture
Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(),
R.drawable.ic_launcher);
// generate one texture pointer
gl.glGenTextures(1, textures, 0);
// ...and bind it to our array
gl.glBindTexture(GL10.GL_TEXTURE_2D, textures[0]);
// create nearest filtered texture
gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_NEAREST);
gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR);
// Use Android GLUtils to specify a two-dimensional texture image from our bitmap
GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bitmap, 0);
// Clean up
bitmap.recycle();
}
public void draw(GL10 gl, float x) {
//! TEXTURE
gl.glBindTexture(GL10.GL_TEXTURE_2D, textures[0]);
gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
//! TEXTURE
gl.glColor4f(0.0f, 1.0f, 0.0f, 1.0f);
gl.glTranslatef(x, 300.0f, 0.0f);
gl.glVertexPointer(2, GL10.GL_FLOAT, 0, ShipVertexBuffer);
//! TEXTURE
gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, ShipTextureBuffer);
//! TEXTURE
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, 4);
//! TEXTURE
gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);
gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
//! TEXTURE
}
}
class Astedoid {
public float speed = 25.0f;
public int collision = 0;
public FloatBuffer AsteroidVertexBuffer;
public float AsteroidVerticles[] = {
0, 0, // лево низ
0, 30, // лево вверх
30, 0, // право низ
30, 30 // право вверх
};
public Astedoid() {
ByteBuffer bb = ByteBuffer.allocateDirect(36);
bb.order(ByteOrder.nativeOrder());
AsteroidVertexBuffer = bb.asFloatBuffer();
AsteroidVertexBuffer.put(AsteroidVerticles);
AsteroidVertexBuffer.position(0);
}
public void draw(GL10 gl, float x, float y) {
if (y > 480.0f) {
enemyY = 0.0f;
enemyX = rand.nextFloat() * (300.0f - 1.0f) + 1.0f;
}
gl.glColor4f(0.0f, 0.0f, 1.0f, 1.0f);
gl.glTranslatef(x, y, 0.0f);
gl.glVertexPointer(2, GL10.GL_FLOAT, 0, AsteroidVertexBuffer);
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, 4);
}
}
// --------------------------------------------------------------------------------
}
MainActivity.java：
package com.example.galaga2d;
import android.opengl.GLSurfaceView;
import android.os.Bundle;
import android.app.Activity;
import android.view.MotionEvent;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Toast;
public class MainActivity extends Activity {
MainRenderer r;
float oldX, newX;
private static final String TAG = "MainRenderer";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Убираем тайтл приложения, тобишь делаем его FullScreen
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
// Создаём новый Surface и устанавливаем MainRenderer
GLSurfaceView view = new GLSurfaceView(this);
r = new MainRenderer();
view.setRenderer(r);
setContentView(view);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
int eventaction = event.getAction();
switch (eventaction) {
case MotionEvent.ACTION_DOWN:
oldX = (float) event.getX();
break;
case MotionEvent.ACTION_MOVE:
newX = (float) event.getX();
if (oldX > newX) {
r.playerX -= 10;
}
if (oldX < newX) {
r.playerX += 10;
}
oldX = (float) event.getX();
break;
case MotionEvent.ACTION_UP:
oldX = (float) event.getX();
break;
}
return true;
}
}
它出什么问题了？也许我忘记了什么或者纹理加载错误......？