使用图像数组的字符动画

Question

我有一个问题，动画我的角色的运动在我的游戏。我用的是一个由16个元素组成的图像数组。

第一个周期进行得很好，但在那之后，角色就没有动画了。它会移动，但不会改变图像，只显示该周期的第一个元素。如果我改变方向，一个周期再次下降，并以同样的方式停止。

有什么想法吗？

这是我的代码：

public void paintHero(Graphics g) {
    // paint character
    offG.drawImage(heroCurrent, hero.getHeroX(), hero.getHeroY(), this);
    // show first image of the cycle where the character stands
    if (hero.getMoveX() == 0 && hero.getMoveY() == 0)
        heroFrame = 0;
    else {
        heroFrame++;
        if (heroFrame == 16)
            heroFrame = 0;
        // I'm dividing heroFrame by 4 to slow down the animation
        if (hero.isMovingUp() == true)
            heroCurrent = heroSprites[4 + heroFrame / 4];
        if (hero.isMovingDown() == true)
            heroCurrent = heroSprites[0 + heroFrame / 4];
        if (hero.isMovingLeft() == true)
            heroCurrent = heroSprites[8 + heroFrame / 4];
        if (hero.isMovingRight() == true)
            heroCurrent = heroSprites[12 + heroFrame / 4];
    }
}

Answer 1

我成功了，但我不知道为什么它现在起作用了。我在每个if语句之后添加了抽签，并保留了第一个语句。如果有人能解释的话，我们会非常感激的。

public void paintHero(Graphics g) {

    offG.drawImage(heroCurrent, hero.getHeroX(), hero.getHeroY(), this);

    if (hero.getMoveX() == 0 && hero.getMoveY() == 0)
        heroFrame = 0;
    else {
        heroFrame++;
        if (heroFrame == 16)
            heroFrame = 0;
    }

    if (hero.isMovingUp()) {
        heroCurrent = heroSprites[4 + heroFrame / 4];
        offG.drawImage(heroCurrent, hero.getHeroX(), hero.getHeroY(), this);
    }
    if (hero.isMovingDown()) {
        heroCurrent = heroSprites[0 + heroFrame / 4];
        offG.drawImage(heroCurrent, hero.getHeroX(), hero.getHeroY(), this);
    }
    if (hero.isMovingLeft()) {
        heroCurrent = heroSprites[8 + heroFrame / 4];
        offG.drawImage(heroCurrent, hero.getHeroX(), hero.getHeroY(), this);
    }
    if (hero.isMovingRight()) {
        heroCurrent = heroSprites[12 + heroFrame / 4];
        offG.drawImage(heroCurrent, hero.getHeroX(), hero.getHeroY(), this);
    }
}

Answer 2

在没有改变方向的情况下，您不会更新精灵。它应该是：

public void paintHero(Graphics g) {
    // paint character
    offG.drawImage(heroCurrent, hero.getHeroX(), hero.getHeroY(), this);

    //always update frame
    heroFrame++;
    if (heroFrame == 16)
        heroFrame = 0;

    // show first image of the cycle where the character stands
    if (hero.getMoveX() == 0 && hero.getMoveY() == 0)
        heroCurrent = heroSprites[heroFrame];//update even if character isnt moving
    else {
        // I'm dividing heroFrame by 4 to slow down the animation
        if (hero.isMovingUp())
            heroCurrent = heroSprites[4 + heroFrame / 4];
        else if (hero.isMovingDown())
            heroCurrent = heroSprites[0 + heroFrame / 4];
        else if (hero.isMovingLeft())
            heroCurrent = heroSprites[8 + heroFrame / 4];
        else if (hero.isMovingRight())
            heroCurrent = heroSprites[12 + heroFrame / 4];
        else//stand still
            heroCurrent = heroSprites[heroFrame];
    }
}