我正在尝试使用LibGDX构建安卓游戏。这是我第一个android应用程序,所以请原谅我,如果我要求的是简单的。我想画一个精灵,但似乎没有出现。我在想,也许这个精灵画在相机空间之外,但即使当我将相机拿回来(显示出游戏区域),我也看不到精灵。我花了很长时间试图找到问题,而我一直未能。这是我的Playstate类:Sprite在绘制时未显示
public class PlayState extends State{
private Man man;
private Cannon cannon;
private Texture cannontop;
private Texture bg;
private SpriteBatch sb;
public PlayState(GameStateManager gsm) {
super(gsm);
cannon = new Cannon();
cannontop = new Texture("Cannon.png");
man = new Man(0, (Gdx.graphics.getHeight()/4));
bg = new Texture("background.png");
cam.setToOrtho(false, 2160, 3840);
}
@Override
protected void handleInput() {
// finish later
}
@Override
public void update(float dt) {
man.update(dt);
//cannon.update();
}
public void create(){
sb = new SpriteBatch();
}
@Override
public void render(SpriteBatch sb) {
sb.setProjectionMatrix(cam.combined);
sb.begin();
sb.draw(bg, cam.position.x - (cam.viewportWidth/2), 0);
sb.draw(man.getTexture(), man.getPosition().x, man.getPosition().y);
//sb.draw(cannon.getTexture(), cannon.getPositionx(), cannon.getPositiony());
cannon.getCannon().draw(sb);
sb.draw(cannontop, (bg.getWidth()/ 2) - (cannon.getTextureWidth()/2) - 23, (bg.getHeight()/2) + (bg.getHeight()/5));
//sb.draw(cannon.getTexture(), (bg.getWidth()/ 2) - (cannon.getTextureWidth()/2), (bg.getHeight()/2) + (bg.getHeight()/5) - (cannontop.getWidth()/2) + 8);
sb.end();
}
@Override
public void dispose() {
bg.dispose();
man.dispose();
cannon.dispose();
}
}
我试图绘制的精灵是在大炮类中。这是我的加农炮类:
public class Cannon {
private Texture cannend;
private Texture bg;
private Texture cannonmain;
private SpriteBatch batch;
private Sprite cannon;
public Cannon(){
cannonmain = new Texture("Cannon.png");
bg = new Texture ("background.png");
cannend = new Texture("cannonend.png");
cannon = new Sprite(cannend, (bg.getWidth()/ 2) - (cannend.getWidth()/2), (bg.getHeight()/2) + (bg.getHeight()/5) - (cannonmain.getWidth()/2) + 8, (cannend.getWidth()), (cannend.getHeight()));
cannon.setPosition((bg.getWidth()/ 2) - (cannend.getWidth()/2), (bg.getHeight()/2) + (bg.getHeight()/5) - (cannonmain.getWidth()/2) + 8);
cannon.setRotation(70);
cannon.setCenter((bg.getWidth()/ 2) , (bg.getHeight()/2) + (bg.getHeight()/5) + 3*(cannend.getHeight()/4));
}
//public update(dt){
// stuffff
// }
public Sprite getCannon(){
return cannon;
}
public float getPositionx(){
return cannon.getX();
}
public float getPositiony(){
return cannon.getY();
}
public void dispose(){
cannonmain.dispose();
cannend.dispose();
bg.dispose();
}
public Texture getTexture(){
return cannend;
}
public float getTextureWidth(){
return cannend.getWidth();
}
}
我道歉是雪碧/纹理名称令人困惑。请忽略评论,因为他们在未来/我尝试过的其他选择。我想知道我能做些什么让雪碧出现。另外,当我使它出现后,精灵会旋转吗?任何帮助是非常赞赏的。 谢谢。
状态类:
public abstract class State {
protected OrthographicCamera cam;
protected Vector3 mouse;
protected GameStateManager gsm;
protected State(GameStateManager gsm) {
this.gsm = gsm;
cam = new OrthographicCamera();
mouse = new Vector3();
}
protected abstract void handleInput();
public abstract void update(float dt);
public abstract void render(SpriteBatch sb);
public abstract void dispose();
}
如果我删除了SpriteBatch sb,我会得到一个红色下划线top'playstate extends ...'行和@overrride上的红色下划线。如果我删除create()方法,则不会遇到任何问题。 –
可以显示状态类,然后 –
更新了主帖 –