制作游戏时遇到问题（相机）

Question

我一直在制作游戏时遇到一些麻烦。 每次运行应用程序时，控制台都会在手机的错误位置呈现图像。这意味着墙壁，球和力量应该垂直。但是，它呈现为水平（在电话环境中）。请帮助解决这个问题。 非常感谢。

package com.luca.tuninga; 

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.OrthographicCamera; 
import com.badlogic.gdx.Input; 
import com.badlogic.gdx.graphics.glutils.ShapeRenderer; 
import com.badlogic.gdx.math.MathUtils; 
import com.badlogic.gdx.math.Vector2; 
import com.badlogic.gdx.physics.box2d.*; 

public class MyGdxGame extends ApplicationAdapter { 


public static float APP_FPS = 60f; 
public static int V_WIDTH = 480; 
public static int V_HEIGHT = 640; 


Box2DDebugRenderer b2dr; 
World world; 
Body ballBody; 

OrthographicCamera camera; 

float cameraMaxY; 

@Override 
public void create() { 
    world = new World(new Vector2(0, -9.8f), false); 
    b2dr = new Box2DDebugRenderer(); 


    camera = new OrthographicCamera(); 
    camera.setToOrtho(false, V_WIDTH, V_HEIGHT); 
    cameraMaxY = camera.position.y; 


    ballBody = createBall(); 
    createWalls(); 
} 

private void update() { 
    world.step(1f/APP_FPS, 6, 2); 

    if (Gdx.input.isTouched()) { 
     ballBody.setLinearVelocity(0, MathUtils.clamp(ballBody.getLinearVelocity().y, 0, 3)); 
     ballBody.applyForceToCenter(new Vector2(0, 650f), false); 
    } 

    if (ballBody.getPosition().y * 32 > cameraMaxY) { 
     camera.translate(0, (ballBody.getPosition().y * 32) - cameraMaxY); 
     camera.update(); 

     cameraMaxY = camera.position.y; 
    } 
} 

@Override 
public void render() { 
    Gdx.gl.glClearColor(.25f, .25f, .25f, 1); 
    Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT); 

    update(); 

    b2dr.render(world, camera.combined.cpy().scl(32f)); 
} 

@Override 
public void dispose() { 
    super.dispose(); 
    world.dispose(); 
} 

private Body createBall() { 
    Body body; 
    BodyDef def = new BodyDef(); 
    def.type = BodyDef.BodyType.DynamicBody; 
    def.fixedRotation = true; 
    def.position.set(camera.position.x/ 32 + .5f, camera.position.y/ 32); 
    def.gravityScale = 3; 
    CircleShape shape = new CircleShape(); 
    shape.setRadius(.5f); 

    body = world.createBody(def); 
    body.createFixture(shape, 1.0f); 
    return body; 

} 

private void createWalls() { 
    Body body; 
    BodyDef def = new BodyDef(); 
    def.type = BodyDef.BodyType.StaticBody; 
    def.fixedRotation = true; 

    PolygonShape shape = new PolygonShape(); 
    shape.setAsBox(1, 200/32); 
    for(int i = 0; i < 20 ; i++) { 
     def.position.set(1.01f, i * (200/32)); 
     body = world.createBody(def); 
     body.createFixture(shape, 1.0f); 

     def.position.set(V_WIDTH/32 - 1, i * (200/32)); 
     body = world.createBody(def); 
     body.createFixture(shape, 1.0f); 
    } 
} 

} 

Answer 1

我不知道如果我理解你的问题的权利，但手机（iOS和Android），你需要手动分配的方向。在AndroidManifest.xml中查找方向并将其分配到横向。

例子：

<activity 
      android:screenOrientation="landscape" 
</activity> 

Answer 2

记住调用它的其他方法后直接调用camera.update();。理想情况下，在每一帧更新相机。