java - 当我使用 g.drawString 时，java 中出现白屏

Question

所以我应该制作一个在 HUD 中有分数的游戏，但每当我使用代码时

g.drawString("Score: " + score, 15, 64);
//score is a variable

出现这样的白屏

HUD的完整代码是这样的

import java.awt.Color;
import java.awt.Graphics;

public class HUD {

public static int HEALTH = 800;

private static int gvalue = 255;

public int score = 0;
public int level = 1;

   public void tick(){
         HEALTH = MainGame.clamp(HEALTH, 0, 800);

         gvalue = MainGame.clamp(gvalue, 0, 255);
         gvalue = HEALTH/4;

         score++;
   }

public void render(Graphics g){
       g.setColor(Color.gray);
       g.fillRect(15, 15, 200, 30);
       g.setColor(new Color(70, gvalue, 0));
       g.fillRect(15, 15, (HEALTH / 4) , 30);
       g.setColor(Color.white);
       g.drawRect(15, 15, 100 * 2, 30);

       g.drawString("Score: " + score, 15, 64);
       //the line above though, when i remove it, it completely works
   }

  public int getScore() {
        return score;
    }

    public void setScore(int score) {
        this.score = score;
    }

    public int getLevel() {
        return level;
    }

    public void setLevel(int level) {
        this.level = level;
    }
    } 

P.S 我有对象、窗口、颜色等，但它们在其他类中。P.P.S 当我删除上述行时，它工作正常。

Answer 1

我没有看到任何声明字体或字体颜色的内容...

g.setColor(Color.black);
Font font = new Font("Times New Roman", Font.BOLD, (int) Math.round(20 * scaleX));
g.setFont(font);
g.drawString("Score: " + score, 15, 64);

我希望这会有所帮助。