libGDX游戏开发之实现血条、进度条、血量（十七）

lobgdx系列，使用java开发游戏纯属业余爱好，当前也想进入游戏兴业。机遇使然进入了Java开发。

绘制原理：
用两个矩形进行绘制，第一个矩形背景为白色，第二个矩形背景为红色，作为血量显示

import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.Pixmap;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import top.lingkang.pwo.utils.BitmapFontUtils;

/**
 * @author lingkang
 * Created by 2022/10/23
 */
public class LifeLine {
    private Texture bgTexture, lifeTexture;
    private BitmapFont bitmapFont;

    public LifeLine() {
        Pixmap pixmap = new Pixmap(100, 15, Pixmap.Format.RGBA8888);
        pixmap.setColor(Color.WHITE);
        pixmap.fill();
        bgTexture = new Texture(pixmap);
        bitmapFont = BitmapFontUtils.loadBitmapFont("0123456789/", 16, Color.WHITE);

        Pixmap pixmap1 = new Pixmap(100, 15, Pixmap.Format.RGBA8888);
        pixmap1.setColor(Color.RED);
        pixmap1.fill();
        lifeTexture = new Texture(pixmap1);
    }

    public void draw(SpriteBatch batch, int x, int y, int life, int maxLife) {
    	// 绘制关键，先绘制背景，再绘制血量，后绘制会覆盖前绘制
        batch.draw(bgTexture, x, y, 100, 15);
        batch.draw(lifeTexture, x, y, (float) life / maxLife * 100, 15);
        bitmapFont.draw(batch, life + " / " + maxLife, x + 110, y + 15);
    }

    public void dispose() {
        bgTexture.dispose();
        lifeTexture.dispose();
        bitmapFont.dispose();
    }
}