Question

我使用基本的java来生成它可以工作的随机整数，但问题是只要程序打开就会生成它。

目标是使用随机整数来决定每次创建对象时要渲染的图像。

public void randomGen(){
    randomInt = random.nextInt(100);
    System.out.println(randomInt);

}

这只是我试图做的一种方式的一个例子。

块代码

package com.brotiergames.ayabew;



public class Blocks  {
private TextureAtlas atlas;
private SpriteBatch batch;
private AtlasRegion sword,shield,staff,fireball,iceball;
private Random random;
private Sprite sprSword,sprShield,sprStaff,sprFireball,sprIceball;
public int randomInt;
public enum BLOCKTYPE{
    SWORD,SHIELD,FIREBALL,ICEBALL;
}
public Blocks(){
    this.atlas = new TextureAtlas(Gdx.files.internal("data/wizardpack.pack"));
    this.batch = new SpriteBatch();
    this.sword = atlas.findRegion("Sword");
    this.shield = atlas.findRegion("Shield");
    this.staff = atlas.findRegion("Staff");
    this.fireball = atlas.findRegion("flame");
    this.iceball = atlas.findRegion("icespell");
    this.sprSword = new Sprite(sword);
    this.sprShield = new Sprite(shield);
    this.sprStaff = new Sprite(staff);
    this.sprFireball = new Sprite(fireball);
    this.sprIceball = new Sprite(iceball);
    this.random = new Random();
    this.randomGen();

}
/*public void randomRenderofBlocks(float x,float y){
batch.begin();
    for ( int i = 0; i < 7; i++){
        //int tempInt = randomInt;
        //int thisInt = tempInt;
        //System.out.println(thisInt);
        if   (thisInt <= 25){
            sprShield.setBounds(x, y, 64, 64);
            sprShield.draw(batch);
        } else if (thisInt >=26 && thisInt <=50){
            sprSword.setBounds(x, y, 64, 64);
            sprSword.draw(batch);
        } else if (thisInt >=51 && thisInt <=75){
            sprFireball.setBounds(x, y, 64, 64);
            sprFireball.draw(batch);
        } else if (thisInt >= 76){
            sprIceball.setBounds(x, y, 64, 64);
            sprIceball.draw(batch);
        }
        x += 92;
        //y +=92;
    }
    batch.end();
}*/
public void renderBlockX(float x , float y){
    batch.begin();
    System.out.println("O"+randomInt);
    if   (randomInt <= 25){
        sprShield.setBounds(x, y, 64, 64);
        sprShield.draw(batch);
        BLOCKTYPE type = BLOCKTYPE.SWORD;
    } else if (randomInt >=26 && randomInt <=50){
        sprSword.setBounds(x, y, 64, 64);
        sprSword.draw(batch);
        BLOCKTYPE type = BLOCKTYPE.SHIELD;
    } else if (randomInt >=51 && randomInt <=75){
        sprFireball.setBounds(x, y, 64, 64);
        sprFireball.draw(batch);
        BLOCKTYPE type = BLOCKTYPE.FIREBALL;
    } else if (randomInt >= 76){
        sprIceball.setBounds(x, y, 64, 64);
        sprIceball.draw(batch);
        BLOCKTYPE type = BLOCKTYPE.ICEBALL;
    }
    x += 92;
    batch.end();
    System.out.println("N"+randomInt);
}
public void oldrenderBlocks(){
    //Gdx.gl20.glClearColor(0, 0, 0, 1);
    //Gdx.gl20.glClear(GL20.GL_COLOR_BUFFER_BIT);
    batch.begin();
    sprShield.setBounds(150, 170, 64, 64);
    sprShield.draw(batch);
    sprSword.setBounds(246, 150, 64, 64);
    sprSword.draw(batch);
    sprFireball.setBounds(342, 150, 64, 64);
    sprFireball.draw(batch);
    sprIceball.setBounds(438, 150, 64, 64);
    sprIceball.draw(batch);
    sprIceball.setBounds(530, 150, 64, 64);
    sprIceball.draw(batch);

    batch.end();
}
public void dispose(){
    atlas.dispose();
    batch.dispose();
}
public void randomGen(){
    randomInt = random.nextInt(100);
    System.out.println(randomInt);

}

}

然后我使用这个类来创建块的对象数组

public class BlockArray  {
Blocks[] blockArray = new Blocks[6];
int offsetX = 0;
public void createArray(){
    for (int i = 0; i < blockArray.length; i++){
        blockArray[i] =  new Blocks();
        blockArray[i].renderBlockX(58 + offsetX, 170);
        offsetX +=92;

    }
}

}

Answer 1

将精灵放入地图中。每个键都映射到枚举。它易于根据枚举或枚举的序数检索元素。

private enum Equipment{
    Sword, Shield, Staff
}

Map<Equipment, Sprite> map = new EnumMap<Equipment,Sprite>(Equipment.class);
for(Equipment equipment : Equipment.values()){
    map.put(equipment, new Sprite(atlas.findRegion(equipment.name())));
}

检索您的图片

private Random random = new Random();

private Sprite getRandomImage(){
    Equipment[] values = Equipment.values();
    return map.get(values[random.nextInt(values.length)]);
}

libgdx生成随机整数但保持生成

1 个答案: