Question

我不能为我的生活弄清楚为什么我设置相机位置（在create方法和更新方法中）都没有效果。

我已经检查过的主要课程正在调用更新。这是代码：

package com.moneylife.zombietown;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;

public class GameManager {
    SpriteBatch spriteBatch;
    float deltaTime;
    Texture mapTexture;
    OrthographicCamera camera;
    int WORLDWIDTH = 2880, WORLDHEIGHT = 1920;

    public GameManager(){
        spriteBatch = new SpriteBatch();
        mapTexture = new Texture("map2880x1920.jpg");


        float w = Gdx.graphics.getWidth();
        float h = Gdx.graphics.getHeight();
        camera = new OrthographicCamera(940, 940 * (h / w)); /// POSSIBLY NEED TO CHECK THIS *******
        camera.position.set(camera.viewportWidth/2 + 500, camera.viewportHeight/2, 0);
        camera.update();
    }

    public void update(){
        deltaTime = Gdx.graphics.getDeltaTime();
        camera.position.x += 10;
        camera.position.y += 10;
        camera.update();
    }

    public void draw(){
        spriteBatch.begin();
        spriteBatch.draw(mapTexture,0,0);
        spriteBatch.end();
    }
}

这里是主要课程以防万一这是相关的：

package com.moneylife.zombietown;

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;

public class ZombieTown extends ApplicationAdapter {
    GameManager gameManager;



    @Override
    public void create () {
        gameManager = new GameManager();

    }

    @Override
    public void render () {
        Gdx.gl.glClearColor(1, 0, 0, 1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        gameManager.update();
        gameManager.draw();

    }

    @Override
    public void dispose () {
        gameManager.spriteBatch.dispose();

    }
}

我正试图让地图在启动时自动对角滚动...

Answer 1

Menno Gouw回答了这个问题。他上面的评论指出我没有将相机的投影矩阵添加到spritebatch。

spriteBatch.setProjectionMatrix(camera.combined);

在begin（）行之前的那一行是我需要解决的问题。

Libgdx Camera - 设置位置无效

1 个答案: