batch.draw(splayerSprite, Gdx.graphics.getWidth() / 2, Gdx.graphics.getHeight() / 2);
您是在告诉代码每次都将其绘制到屏幕的中心。您需要根据您的输入更改Gdx.graphics.getWidth() / 2
和更改实际值。Gdx.graphics.getHeight() / 2
编辑#2:batch.setProjectionmatrix(camera.combined);
除了我提到的所有内容之外,还需要该行,我都没有注意到我的代码中已经有特定的行(它包含在默认的 libGDX 项目中),并且没有尝试使用该行运行我的演示删除。我希望这能消除我可能造成的任何困惑。
编辑:由于显然没有人真正喜欢我的答案,所以我使用干净的 libGDX 游戏中指定的控件编写了一个演示。无论相机瞄准哪里(因为它正在被平移),精灵总是被渲染在全局屏幕的中心。非常有必要使用精灵的位置来batch.draw()
代替静态位置,否则它不会移动。
package com.me.mygdxgame;
import com.badlogic.gdx.ApplicationListener;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input.Keys;
import com.badlogic.gdx.graphics.GL10;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.Texture.TextureFilter;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.graphics.g2d.TextureRegion;
import com.badlogic.gdx.math.Vector2;
public class MyGdxGame implements ApplicationListener {
private OrthographicCamera camera;
private SpriteBatch batch;
private Texture texture;
private Sprite sprite;
private Sprite background;
private boolean lockToSprite;
private Vector2 vecCamera;
private Vector2 vecSprite;
@Override
public void create() {
float w = Gdx.graphics.getWidth();
float h = Gdx.graphics.getHeight();
camera = new OrthographicCamera(w, h);
batch = new SpriteBatch();
lockToSprite = true;
vecCamera = new Vector2();
vecSprite = new Vector2();
texture = new Texture(Gdx.files.internal("data/libgdx.png"));
texture.setFilter(TextureFilter.Linear, TextureFilter.Linear);
TextureRegion region = new TextureRegion(texture, 0, 0, 512, 275);
sprite = new Sprite(region);
sprite.setSize(0.1f * sprite.getWidth(), 0.1f * sprite.getHeight());
sprite.setOrigin(sprite.getWidth()/2, sprite.getHeight()/2);
sprite.setPosition(-sprite.getWidth()/2, -sprite.getHeight()/2);
background = new Sprite(region);
background.setOrigin(background.getWidth() / 2, background.getHeight() / 2);
System.out.println(background.getOriginX());
background.setPosition(-background.getWidth() / 2, -background.getHeight() / 2);
}
@Override
public void dispose() {
batch.dispose();
texture.dispose();
}
@Override
public void render() {
camera.translate(vecCamera);
Gdx.gl.glClearColor(1, 1, 1, 1);
Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
camera.update();
camera.translate(vecCamera.cpy().mul(-1));
float moveSensitivity = 0.9f;
Vector2 vecInputSprite = new Vector2();
if (Gdx.input.isKeyPressed(Keys.UP))
vecInputSprite.y += moveSensitivity;
if (Gdx.input.isKeyPressed(Keys.DOWN))
vecInputSprite.y -= moveSensitivity;
if (Gdx.input.isKeyPressed(Keys.LEFT))
vecInputSprite.x -= moveSensitivity;
if (Gdx.input.isKeyPressed(Keys.RIGHT))
vecInputSprite.x += moveSensitivity;
if (Gdx.input.isKeyPressed(Keys.N))
vecSprite.set(new Vector2());
Vector2 vecInputCamera = new Vector2();
if (Gdx.input.isKeyPressed(Keys.W))
vecInputCamera.y += moveSensitivity;
if (Gdx.input.isKeyPressed(Keys.S))
vecInputCamera.y -= moveSensitivity;
if (Gdx.input.isKeyPressed(Keys.A))
vecInputCamera.x -= moveSensitivity;
if (Gdx.input.isKeyPressed(Keys.D))
vecInputCamera.x += moveSensitivity;
if (Gdx.input.isKeyPressed(Keys.R)) {
vecCamera.set(new Vector2());
lockToSprite = false;
}
if (vecInputCamera.len2() != 0)
lockToSprite = false;
else if (Gdx.input.isKeyPressed(Keys.L))
lockToSprite = true;
if (lockToSprite) {
vecCamera.set(vecSprite);
} else {
vecCamera.add(vecInputCamera);
}
vecSprite.add(vecInputSprite);
batch.setProjectionMatrix(camera.combined);
batch.begin();
background.draw(batch);
sprite.setPosition(vecSprite.x, vecSprite.y);
sprite.draw(batch);
//batch.draw(sprite, vecSprite.x, vecSprite.y);
batch.end();
}
@Override
public void resize(int width, int height) {
}
@Override
public void pause() {
}
@Override
public void resume() {
}
}