Libgdx相机-设置位置无效 [英] Libgdx Camera - Setting position having no effect

问题描述

我一生都无法弄清楚为什么设置相机位置(在create方法和update方法中)都无效.

I cannot for the life of me figure out why my setting the camera position (both in the create method and the update method) have no effect.

我已经检查过的主类正在调用此更新.这是代码:

The update is being called by my main class I already checked. Here is code:

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();
    }
}

这是主类，以防相关:

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();

    }
}

我现在只是想让地图在启动时自动对角滚动...

I was just trying to make the map automatically scroll diagonally upon startup for now...

推荐答案

Menno Gouw回答了这个问题.他在上面的评论中指出，我没有将相机的投影矩阵添加到spritebatch中.

This question was answered by Menno Gouw. His comment above states that I didn't add the projection matrix of the camera to the spritebatch.

spriteBatch.setProjectionMatrix(camera.combined);

begin()行之前的那一行是我解决此问题所需的全部内容.

that line before the begin() line was all I needed to fix this.

这篇关于Libgdx相机-设置位置无效的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！