我正在尝试使用LibGDX构建一个Android游戏。这是我的第一个Android应用程序,请原谅我,如果我要求的是简单的。我想画一个精灵,但似乎没有任何东西出现。我在想,也许精灵是在相机空间之外画出来的,但即使我拿回相机(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,但我无法做到。这是我的Playstate类:
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();
}
}
我想要绘制的精灵是在加农炮类中。这是我的大炮班:
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();
}
}
我道歉是精灵/纹理名称令人困惑。请忽略这些评论,因为它们适用于我尝试过的未来/替代事项。我想知道如何让Sprite出现。此外,精灵旋转后我会旋转吗?任何帮助都非常受欢迎。
感谢。
州级:
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();
}
答案 0 :(得分:1)
您应该使用sprite.draw(spritebatch)
而不是spritebatch.draw(sprite)
来绘制精灵。
另外,国家级的用途是什么? Playstate应该是一个屏幕吗?然后你应该在你的课程中实现Screen界面,然后使用你想要的方法,比如'渲染',' dispose',...
答案 1 :(得分:0)
从render方法中删除SpriteBatch sb参数 只需使用
@Override
public void render()
答案 2 :(得分:0)
可能是libgdx无法绘制精灵,因为重复任何SpriteBatch.begin();
并复制SpriteBatch.end();
在一堆电话中