小编dra*_*ner的帖子

因此,我正在尝试为玩家制作一个带有健康栏的游戏,但每当我使用交叉产品或任何其他数学方法应该起作用时,百分比结果是0.0......这是处理此问题的.java文件:

package com.game.graphics;

import com.game.entity.mob.Mob;

public class HUD {
    Mob target;
    Sprite healthbar;
    Sprite bgBar;

    double percent_normal;

    public HUD(Mob target) {
        this.target = target;
        bgBar = new Sprite(0xff777777, 104, 8);
        healthbar = new Sprite(0xffFF0000, 100, 6);
    }

    public void update() {
        percent_normal = target.getHealth() / 100;
        percent_normal *= target.getMaxHealth();
    }

    public void printData() {
        System.out.println("Normal(" + percent_normal + ")");
    // if the targets's health is any lower than the max health then this seems to always return 0 …