I'm trying to display a triangle in opengl es and I have been over the tutorial several times but i cant figure out why this is happening. It displays the background but not the triangle and I've looked over the code in close detail but I couldn't find anything wrong.
Here is my MainActivity:
public class MainActivity extends Activity {
GLSurfaceView ourSurface;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ourSurface = new GLSurfaceView(this);
ourSurface.setRenderer(new GLRenderer());
setContentView(ourSurface);
}
#Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
ourSurface.onPause();
}
#Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
ourSurface.onResume();
}
}
Here is my Renderer:
public class GLRenderer implements Renderer{
private GLTriangle tri;
public GLRenderer(){
tri = new GLTriangle();
}
#Override
public void onSurfaceCreated(GL10 gl, EGLConfig eglConfig) {
// TODO Auto-generated method stub
gl.glDisable(GL10.GL_DITHER);
gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_FASTEST);
gl.glClearColor(.8f, 0f, .2f, 1f);
gl.glClearDepthf(1f);
}
#Override
public void onDrawFrame(GL10 gl) {
// TODO Auto-generated method stub
gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glLoadIdentity();
GLU.gluLookAt(gl, 0, 0, -10, 0, 0, 0, 0, 2, 0);
tri.draw(gl);
}
#Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
// TODO Auto-generated method stub
gl.glViewport(0, 0, width, height);
float ratio = (float)width/height;
gl.glMatrixMode(GL10.GL_PROJECTION);
gl.glLoadIdentity();
gl.glFrustumf(-ratio, ratio, -1, 1f, 1, 25);
}
}
Here is my Triangle:
public class GLTriangle {
private float vertices[] = {
0f,1f,
1f,-1f,
-1f,-1f
};
private FloatBuffer vertBuff;
private short pIndex[]= {0,1,2};
private ShortBuffer pBuff;
public GLTriangle(){
ByteBuffer bBuff = ByteBuffer.allocateDirect(vertices.length * 4);
bBuff.order(ByteOrder.nativeOrder());
vertBuff = bBuff.asFloatBuffer();
vertBuff.put(vertices);
vertBuff.position(0);
ByteBuffer pbBuff = ByteBuffer.allocateDirect(pIndex.length * 2);
bBuff.order(ByteOrder.nativeOrder());
pBuff = pbBuff.asShortBuffer();
pBuff.put(pIndex);
pBuff.position(0);
}
public void draw(GL10 gl){
gl.glFrontFace(GL10.GL_CW);
gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glVertexPointer(2, GL10.GL_FLOAT, 0, vertBuff);
gl.glDrawElements(GL10.GL_TRIANGLES, pIndex.length, GL10.GL_UNSIGNED_SHORT, pBuff);
gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);
}
}
you have to set the color of your triangle!
so have to add
gl.glColorf(0.5f, 0.9f, 0.2f, 1.0f); //r g b + opacity
in draw method, first than vertexPointer() method. Then
remove
gl.glSetFrontFace(GL10l.GL_CW);
Related
I am trying to make a little multiplayer rpg game.
It all worked fine, until I implemented cameras for each player.
Now I got the problem, that if one player joines, he can't walk alone. It seems that he is stuck on the Client players cam. I have created a camera for each of them. Did I miss something?
Here's my "Main" class
public class LauncherScreen implements Screen{
//-----------------------------------------------------------
//-----------------idle Animation----------------------------
//-----------------------------------------------------------
Texture texture;
AnimatedSprite animationForMultiplayer;
SpriteBatch spriteBatch;
Player mySelf;
OrthographicCamera playerCam;
OrthographicCamera mpPlayerCam;
static Client client = new Client();
Launcher launcher = new Launcher();
#Override
public void render(float delta) {
// TODO Auto-generated method stub
Gdx.gl.glClearColor(1, 1, 1, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
launcher.update();
for(MPPlayer mpPlayer : launcher.getPlayersValue()){
//System.out.println("mpPlayerXandY : "+mpPlayer.state);
animationForMultiplayer.setState(mpPlayer.state);
animationForMultiplayer.createAnimation();
mpPlayerCam.update();
spriteBatch.setProjectionMatrix(mpPlayerCam.combined);
spriteBatch.begin();
spriteBatch.draw(animationForMultiplayer.convertAnimationTOframes(), mpPlayer.x, mpPlayer.y,Gdx.graphics.getWidth()/25,Gdx.graphics.getHeight()/15); // #6
spriteBatch.end();
mpPlayerCam.position.set(mpPlayer.x,mpPlayer.y,0);
System.out.println("mpPlayer : "+mpPlayer.x+" "+mpPlayer.y);
}
mySelf.update();
mySelf.draw(launcher.getPlayerX(), launcher.getPlayerY(), playerCam);
//System.out.println(Gdx.graphics.getFramesPerSecond());
System.out.println("player : "+launcher.getPlayerX()+" "+launcher.getPlayerY());
}
#Override
public void pause() {
// TODO Auto-generated method stub
//super.pause();
}
#Override
public void resume() {
// TODO Auto-generated method stub
//super.resume();
}
#Override
public void dispose() {
// TODO Auto-generated method stub
//super.dispose();
}
#Override
public void show() {
// TODO Auto-generated method stub
texture = new Texture(Gdx.files.internal("EnemyAnimations/BugIdleStand.png"));
animationForMultiplayer = new AnimatedSprite();
spriteBatch = new SpriteBatch();
mySelf = new Player();
mySelf.doSetup();
playerCam = new OrthographicCamera(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
playerCam.setToOrtho(false);
playerCam.position.set(mySelf.getX(), mySelf.getY(), 0);
mpPlayerCam = new OrthographicCamera(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
mpPlayerCam.setToOrtho(false);
mpPlayerCam.position.set(0, 0, 0);
}
#Override
public void resize(int width, int height) {
// TODO Auto-generated method stub
}
#Override
public void hide() {
// TODO Auto-generated method stub
}
}
And here's the "Main" player update
public void draw(float f, float g, OrthographicCamera camera){
position.x = f;
position.y = g;
//System.out.println("In beforeSetState : "+currentState);
animatedSprite.setState(state);
//System.out.println("In after : "+currentState);
animatedSprite.createAnimation();
camera.position.set(f,g,0);
camera.update();
batch.setProjectionMatrix(camera.combined);
batch.begin();
batch.draw(animatedSprite.convertAnimationTOframes(),f,g, Gdx.graphics.getWidth()/25,Gdx.graphics.getHeight()/15); // #17
batch.end();
//batch.setProjectionMatrix(null);
//System.out.println(currentState);
}
Found a solution for it, didnt knew that it was so easy ^^ heres my updated code
public class LauncherScreen implements Screen{
//-----------------------------------------------------------
//-----------------idle Animation----------------------------
//-----------------------------------------------------------
Texture texture;
AnimatedSprite animationForMultiplayer;
SpriteBatch spriteBatch;
Player mySelf;
OrthographicCamera playerCam;
OrthographicCamera mpPlayerCam;
OrthographicCamera camera;
ShapeRenderer shapeRenderer;
static Client client = new Client();
Launcher launcher = new Launcher();
int[][] map = {{1,1,1,1,1,1,1,1,1,1},
{1,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,1},
{1,0,0,0,0,0,0,0,0,1},
{1,1,1,1,1,1,1,1,1,1}};
#Override
public void render(float delta) {
// TODO Auto-generated method stub
Gdx.gl.glClearColor(1, 1, 1, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
launcher.update();
for(int i = 0; i < map.length; i++){
for(int j = 0; j < map[0].length; j++){
if(map[i][j] == 1){
shapeRenderer.setProjectionMatrix(camera.combined);
shapeRenderer.begin(ShapeType.Line);
shapeRenderer.setColor(0, 0, 0, 0);
shapeRenderer.rect(i*50, j*50, 50, 50);
shapeRenderer.end();
}
}
}
for(MPPlayer mpPlayer : launcher.getPlayersValue()){
//System.out.println("mpPlayerXandY : "+mpPlayer.state);
animationForMultiplayer.setState(mpPlayer.state);
animationForMultiplayer.createAnimation();
//mpPlayerCam.update();
//spriteBatch.setProjectionMatrix(mpPlayerCam.combined);
camera.position.set(mpPlayer.x,mpPlayer.y,0);
spriteBatch.setProjectionMatrix(camera.combined);
spriteBatch.begin();
spriteBatch.draw(animationForMultiplayer.convertAnimationTOframes(), mpPlayer.x, mpPlayer.y,Gdx.graphics.getWidth()/25,Gdx.graphics.getHeight()/15); // #6
spriteBatch.end();
//mpPlayerCam.position.set(mpPlayer.x,mpPlayer.y,0);
System.out.println("mpPlayer : "+mpPlayer.x+" "+mpPlayer.y);
}
mySelf.update();
mySelf.draw(launcher.getPlayerX(), launcher.getPlayerY(), camera);
//System.out.println(Gdx.graphics.getFramesPerSecond());
camera.update();
System.out.println("player : "+launcher.getPlayerX()+" "+launcher.getPlayerY());
}
#Override
public void pause() {
// TODO Auto-generated method stub
//super.pause();
}
#Override
public void resume() {
// TODO Auto-generated method stub
//super.resume();
}
#Override
public void dispose() {
// TODO Auto-generated method stub
//super.dispose();
}
#Override
public void show() {
// TODO Auto-generated method stub
texture = new Texture(Gdx.files.internal("EnemyAnimations/BugIdleStand.png"));
animationForMultiplayer = new AnimatedSprite();
spriteBatch = new SpriteBatch();
mySelf = new Player();
mySelf.doSetup();
playerCam = new OrthographicCamera(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
playerCam.setToOrtho(false);
playerCam.position.set(mySelf.getX(), mySelf.getY(), 0);
mpPlayerCam = new OrthographicCamera(0,0);
mpPlayerCam.setToOrtho(false);
camera = new OrthographicCamera(0, 0);
camera.setToOrtho(false);
shapeRenderer = new ShapeRenderer();
}
#Override
public void resize(int width, int height) {
// TODO Auto-generated method stub
}
#Override
public void hide() {
// TODO Auto-generated method stub
}
}
If I comment rayHandler.render() out, I see this screen ..
However when I uncomment it, the screen goes black. Any ideas?
public class GameScreen implements Screen {
private ColorCatch game;
private OrthographicCamera camera;
private World world;
private RayHandler rayHandler;
private Body body;
private ShapeRenderer shapeRenderer = new ShapeRenderer();
public GameScreen (final ColorCatch gam) {
this.game = gam;
camera = new OrthographicCamera();
camera.setToOrtho(false, 800, 480);
world = new World(new Vector2(0.0f, -98.0f), true);
rayHandler = new RayHandler(world);
new PointLight(rayHandler, 1000, new Color(1,1,1,1), 5.0f, Gdx.graphics.getWidth() / 2, Gdx.graphics.getHeight() / 2);
CircleShape shape = new CircleShape();
shape.setRadius(3.0f);
FixtureDef fd = new FixtureDef();
fd.shape = shape;
BodyDef bd = new BodyDef();
bd.position.set(new Vector2(Gdx.graphics.getWidth() / 2, Gdx.graphics.getHeight() / 2));
bd.type = BodyType.DynamicBody;
body = world.createBody(bd);
}
#Override
public void render(float delta) {
Gdx.gl.glClearColor(0, 0, 0, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
camera.update();
shapeRenderer.setProjectionMatrix(camera.combined);
world.step(Gdx.graphics.getDeltaTime(), 8, 1);
Vector2 pos = body.getPosition();
shapeRenderer.begin(ShapeType.Filled);
shapeRenderer.setColor(Color.RED);
shapeRenderer.identity();
shapeRenderer.translate(pos.x, pos.y, 0);
shapeRenderer.circle(0.0f, 0.0f, 66.0f);
shapeRenderer.end();
shapeRenderer.begin(ShapeType.Filled);
shapeRenderer.setColor(0, 1, 0, 1);
shapeRenderer.identity();
shapeRenderer.rect(5, 5, 10, 10);
shapeRenderer.circle(25, 25, 10);
shapeRenderer.end();
rayHandler.setCombinedMatrix(camera);
rayHandler.update();
//rayHandler.render(); //FIXME this line causes blank screen
}
#Override
public void dispose() {
game.getBatch().dispose();
bg.dispose();
}
#Override
public void show() {
// TODO Auto-generated method stub
}
#Override
public void resize(int width, int height) {
// TODO Auto-generated method stub
}
#Override
public void pause() {
// TODO Auto-generated method stub
}
#Override
public void resume() {
// TODO Auto-generated method stub
}
#Override
public void hide() {
// TODO Auto-generated method stub
}
}
Turns out the radius of my PointLight was too small, so not visable.
Heres what worked ..
new PointLight(rayHandler, 1000, new Color(1, 1, 1, 1), 50.0f, Gdx.graphics.getWidth() / 2, Gdx.graphics.getHeight() / 2);
I have a problem with the method sprite.setSize(float x, float y) in Libgdx. It does not affect the size or the dimensions of the sprite. They remains fixed whatever I pass to the setSize() method.
here is my code:
public class GameScreen implements Screen {
OrthographicCamera camera;
SpriteBatch batch;
Texture carTexture;
Sprite carSprite;
public GameScreen()
{
}
#Override
public void render(float delta) {
// TODO Auto-generated method stub
Gdx.gl.glClearColor(0,0,0,0);
Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
batch.begin();
carSprite.setSize(16, 32);
batch.draw(carSprite, 0 , 0);
batch.end();
camera.update();
}
#Override
public void resize(int width, int height) {
// TODO Auto-generated method stub
camera.viewportWidth=width;
camera.viewportHeight=height;
camera.update();
}
#Override
public void show() {
// TODO Auto-generated method stub
camera = new OrthographicCamera();
batch = new SpriteBatch();
carTexture = new Texture(Gdx.files.internal("NetRace.png"));
carTexture.setFilter(TextureFilter.Linear, TextureFilter.Linear);
carSprite = new Sprite(carTexture);
}
#Override
public void hide() {
// TODO Auto-generated method stub
}
#Override
public void pause() {
// TODO Auto-generated method stub
}
#Override
public void resume() {
// TODO Auto-generated method stub
}
#Override
public void dispose() {
// TODO Auto-generated method stub
}
}
could you please find my mistake?
The problem was solved.
I had to use sprite.draw(batch); instead of using Batch.draw(Sprite sp, float x, float y); since the Batch.draw(...) method takes the texture from the passed sprite and uses the texture in the drawing process which has a fixed width and a fixed height.
Another way to solve this problem is to use the batch.draw(Sprite, float x, float y, float width, float height); method in the SpriteBatch class.
I'm trying to update the gluLookAt() from the main UI thread of my opengl renderer I've tryed the requestRenderer() methode at the end of my code for my button but eclipes gives me sme errors with it I was just wondering what would be the best possible way to do this from the main UI thread?
Heres my MainActivity class:
public class MainActivity extends Activity implements OnClickListener {
GLSurfaceView ourSurface;
GLRenderer call;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ourSurface = new SurfaceView(this);
setContentView(R.layout.activity_main);
FrameLayout v = (FrameLayout) findViewById(R.id.Canvas);
v.addView(ourSurface);
}
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()){
case R.id.pluseyex:
break;
case R.id.minuseyex:
break;
case R.id.pluseyey:
break;
case R.id.minuseyey:
break;
case R.id.pluseyez:
float z =call.getEyez()+1;
call.setEyez(z);
break;
case R.id.minuseyez:
break;
}
}
Here is my Renderer:
public class SurfaceView extends GLSurfaceView {
private final GLRenderer mRenderer;
public SurfaceView(Context context) {
super(context);
// TODO Auto-generated constructor stub
mRenderer = new GLRenderer();
setRenderer(mRenderer);
setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY);
}
public class GLRenderer implements Renderer {
public volatile float eyez =-5;
public float getEyez() {
return eyez;
}
public void setEyez(float eyez) {
this.eyez = eyez;
}
private GLTriEX tri;
//private GLCubeEX cube;
public GLRenderer(){
tri = new GLTriEX();
//cube = new GLCubeEX();
}
#Override
public void onSurfaceCreated(GL10 gl, EGLConfig eglConfig) {
// TODO Auto-generated method stub
gl.glDisable(GL10.GL_DITHER);
gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_FASTEST);
gl.glClearColor(.8f, 0f, .2f, 1f);
gl.glClearDepthf(1f);
}
#Override
public void onDrawFrame(GL10 gl) {
// TODO Auto-generated method stub
gl.glDisable(GL10.GL_DITHER);
gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glLoadIdentity();
GLU.gluLookAt(gl, 0, 0, -5, 0, 0, 0, 0, 2, 0);
//long time = SystemClock.uptimeMillis()% 4000L;
//float angle =.090f * ((int)time);
//gl.glRotatef(angle, 1, 0, 2);
tri.draw(gl);
//cube.draw(gl);
}
#Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
// TODO Auto-generated method stub
gl.glViewport(0, 0, width, height);//bottom left corrnor
float ratio = (float) width/height;
gl.glMatrixMode(GL10.GL_PROJECTION);
gl.glLoadIdentity();
gl.glFrustumf(-ratio, ratio, -1, 1, 1, 25);
//gl.glFrustumf(left, right, bottom, top, zNear, zFar)
}
}
}
You're not using your eyez value anywhere in your Renderer.
I think you probably want to replace
GLU.gluLookAt(gl, 0, 0, -5, 0, 0, 0, 0, 2, 0);
by
GLU.gluLookAt(gl, 0, 0, eyez, 0, 0, 0, 0, 2, 0);
to actually see any effect from pressing the button.
I'm using Andengine for android and I created a code where my player will shoot a bullet when I touch the screen.
Now I want to do 2 things
first: I want the bullet to be removed when it collides with the enemy
Second: I want to be able to shoot only bullet at a time. So as long as the bullets haven't hit the enemy I don't want the method of firing a bullet to be called.
Here's the code I created
I minimized all the codes that are not really important
public class ShooterActivity extends BaseGameActivity implements IOnSceneTouchListener,IAccelerometerListener{
//Variables
private static final int CAMERA_WIDTH = 720;
private static final int CAMERA_HEIGHT = 480;
private Camera mCamera;
private BitmapTextureAtlas mBitmapTextureAtlas;
private TiledTextureRegion mTiledTextureRegion;
private TextureRegion mBulletTextureRegion;
private AnimatedSprite facebox;
private AnimatedSprite enemy;
private Sprite bulletsprite;
private Scene mScene;
private PhysicsWorld mPhysicsWorld;
private Shape ground, roof, right, left;
private Body body, bulletbody, enemybody;
private FixtureDef mFixtureDef = PhysicsFactory.createFixtureDef(1, 0.5f, 0.5f);
private TiledTextureRegion enemyTiled;
private boolean pFlippedHorizontal = true;
#Override
public Engine onLoadEngine() {
// TODO Auto-generated method stub
this.mCamera = new Camera(0,0,CAMERA_WIDTH,CAMERA_HEIGHT);
return new Engine(new EngineOptions(true, ScreenOrientation.LANDSCAPE, new RatioResolutionPolicy(CAMERA_WIDTH,CAMERA_HEIGHT),this.mCamera));
}
#Override
public void onLoadResources() {
// TODO Auto-generated method stub
this.mBitmapTextureAtlas = new BitmapTextureAtlas(1024,1024, TextureOptions.BILINEAR_PREMULTIPLYALPHA);
this.mTiledTextureRegion = BitmapTextureAtlasTextureRegionFactory.createTiledFromAsset(mBitmapTextureAtlas, this, "gfx/player.png", 0, 0, 8, 1);
this.enemyTiled = BitmapTextureAtlasTextureRegionFactory.createTiledFromAsset(mBitmapTextureAtlas, this, "gfx/enemy.png", 200, 500, 8, 1);
this.mBulletTextureRegion = BitmapTextureAtlasTextureRegionFactory.createFromAsset(mBitmapTextureAtlas, this, "gfx/badge.png", 200, 200);
this.mEngine.getTextureManager().loadTexture(mBitmapTextureAtlas);
}
#Override
public Scene onLoadScene() {
// TODO Auto-generated method stub
this.mEngine.registerUpdateHandler(new FPSLogger());
mScene = new Scene();
mScene.setBackground(new ColorBackground(0,0,0));
this.mPhysicsWorld = new PhysicsWorld(new Vector2(0,SensorManager.GRAVITY_EARTH), false);
//Walls
final FixtureDef wallFixture = PhysicsFactory.createFixtureDef(1, 0.5f, 0.5f);
roof = new Rectangle(0, 0, CAMERA_WIDTH, 2);
ground = new Rectangle(0,CAMERA_HEIGHT ,CAMERA_WIDTH,2);
left = new Rectangle(0,0,2,CAMERA_HEIGHT);
right = new Rectangle(CAMERA_WIDTH -2, 0,2,CAMERA_HEIGHT);
PhysicsFactory.createBoxBody(this.mPhysicsWorld, ground, BodyType.StaticBody, wallFixture);
PhysicsFactory.createBoxBody(this.mPhysicsWorld, roof, BodyType.StaticBody, wallFixture);
PhysicsFactory.createBoxBody(this.mPhysicsWorld, left, BodyType.StaticBody, wallFixture);
PhysicsFactory.createBoxBody(this.mPhysicsWorld, right, BodyType.StaticBody, wallFixture);
this.mScene.attachChild(roof);
this.mScene.attachChild(ground);
this.mScene.attachChild(left);
this.mScene.attachChild(right);
//facebox
facebox = new AnimatedSprite(150,150, this.mTiledTextureRegion);
facebox.setScale(.75f);
facebox.animate(200);
body = PhysicsFactory.createBoxBody(this.mPhysicsWorld, facebox, BodyType.DynamicBody, mFixtureDef);
this.mPhysicsWorld.registerPhysicsConnector(new PhysicsConnector(facebox,body,true,false));
this.mScene.attachChild(facebox);
//enemy
enemy = new AnimatedSprite(500,150,this.enemyTiled);
enemy.animate(200);
enemy.setScale(.75f);
enemy.setFlippedHorizontal(pFlippedHorizontal);
this.mScene.attachChild(enemy);
enemybody = PhysicsFactory.createBoxBody(this.mPhysicsWorld, enemy, BodyType.DynamicBody, mFixtureDef);
this.mPhysicsWorld.registerPhysicsConnector(new PhysicsConnector(enemy,enemybody,true,false));
//scene
this.mScene.setOnSceneTouchListener(this);
this.mScene.registerUpdateHandler(mPhysicsWorld);
return mScene;
}
#Override
public void onLoadComplete() {
// TODO Auto-generated method stub
}
//touch the screen to create bullets
#Override
public boolean onSceneTouchEvent(Scene pScene, TouchEvent pSceneTouchEvent) {
// TODO Auto-generated method stub
if(pSceneTouchEvent.getAction() == TouchEvent.ACTION_DOWN){
runOnUpdateThread(new Runnable(){
#Override
public void run() {
// TODO Auto-generated method stub
fire();
}
});
//here I want to be able to remove the bullets when it hits the enemy but not sure what method to use
this.mScene.registerUpdateHandler(new IUpdateHandler(){
#Override
public void onUpdate(float pSecondsElapsed) {
// TODO Auto-generated method stub
if(bulletsprite.collidesWith(enemy)){
}
}
#Override
public void reset() {
// TODO Auto-generated method stub
}
});
}
return false;
}
//method to create bullets
public void fire(){
bulletsprite = new Sprite(this.facebox.getX() + 15, this.facebox.getY() -5, this.mBulletTextureRegion);
bulletsprite.setScale(.5f);
bulletbody = PhysicsFactory.createCircleBody(this.mPhysicsWorld, bulletsprite, BodyType.DynamicBody, mFixtureDef);
this.mPhysicsWorld.registerPhysicsConnector(new PhysicsConnector(bulletsprite, bulletbody, true, true));
final Vector2 speed = Vector2Pool.obtain(50, 0);
bulletbody.setLinearVelocity(speed);
Vector2Pool.recycle(speed);
this.mScene.attachChild(bulletsprite);
}
//nothing here just accelerometer
#Override
public void onAccelerometerChanged(AccelerometerData pAccelerometerData) {
// TODO Auto-generated method stub
final Vector2 gravity = Vector2Pool.obtain(pAccelerometerData.getX() *3, 10);
this.mPhysicsWorld.setGravity(gravity);
Vector2Pool.recycle(gravity);
}
#Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
this.enableAccelerometerSensor(this);
}
#Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
this.disableAccelerometerSensor();
}
}
First, google collision detection - that will help you solve the first problem.
Second, only keep 1 instance of the bullet object, and when it either (a) collides with the enemy or another object, or (b) goes off the screen, then you make the bullet able to be shot again.