需要一些帮助来移动敌人的子弹动画

Question

我需要帮助弄清楚为什么敌人的子弹在代码相同的情况下不会移动…请帮助……我并没有单独创建这两个类只是简单的动画

现在我想你可以看到当我说它们有相同的代码时，我的意思是相同的代码哈哈。玩家的子弹可以正常工作，但敌人的子弹却没有任何作用，这真的让我很吃惊

public void render(GameContainer gc, StateBasedGame sbg, Graphics g) throws SlickException {
map.draw(0,0);
// First enemy
enemy1.draw(enemy1PosX, enemy1PosY);
enemyShot.draw(enemy1PosX+30, enemy1PosY + 65);

//Player
ship.draw(shipPosX, shipPosY);
playerShot.draw(shootPosX+23, shootPosY);
Animation copy = playerShot.copy();
copy.draw(shootPosX+23, shootPosY);
g.drawString("Ship X: " + shipPosX + "nShips Y: " + shipPosY,400,20);
if(quit == true) {
    g.drawString("Resume (R)",250,100);
    g.drawString("Main Menu (M)",250,150);
    g.drawString("Quit Game(Q)",250,200);
    if(quit==false){
        g.clear();
    }
}

}

public void update(GameContainer gc, StateBasedGame sbg, int delta) throws SlickException {
Input input = gc.getInput();
//Move Enemy
enemy1=enemyA;
//enemy1PosX += delta * .7f;
//enemy1PosY += delta * .1f;
    if(enemy1PosX > 668){
        enemy1PosX = -1;
        if(isEnemyHit(enemy1)){
            deadEnemies.add(enemy1);
    }
}

// up
if(input.isKeyDown(Input.KEY_UP)){
    ship = move;
    movefx.play();
    shipPosY -= delta * .6f;
    //collision detection
    if(shipPosY < 9){
        shipPosY = 9;
    }
}
//down
if(input.isKeyDown(Input.KEY_DOWN)){
    ship = move;
    shipPosY += delta * .6f;
    //collision detection
    if(shipPosY > 468){
        shipPosY = 468;
    }
}
//left
if(input.isKeyDown(Input.KEY_LEFT)){
    ship = move;
    shipPosX -= delta * .6f;
    //collision detection
    if(shipPosX < -1){
        shipPosX =-1;
    }
}
//right
if(input.isKeyDown(Input.KEY_RIGHT)){
    ship = move;
    shipPosX += delta * .6f;
    //collision detection
    if(shipPosX > 668){
        shipPosX = 668;
    }
}
    //FIRE PLAYER BULLETS
    playerShot = shootUp;
    playerShot.start();
    shootPosX = shipPosX-10;
    shootPosY -= delta * 1.3f;
    Animation copy = playerShot.copy();
    //Auto-Shoot bullet
    if(shootPosY <= shipPosY - 480){
        copy = playerShot;
        shootPosX = shipPosX;
        shootPosY = shipPosY; 
        shootPosY -= delta * 1.7f;
        copy.restart();
    }
    //FIRE ENEMY BULLETS
    enemyShot = shootDown;
    enemyShot.start();
    enemyShotPosX = enemy1PosX + 10;
    enemyShotPosY += delta * .3f;
    Animation dbl = playerShot.copy();

EnemyShot是一个动画，playerShot是一个动画，没有单独的敌人或玩家类。请帮助

Answer 1

你可能想给每一个敌人的子弹它自己的位置，而不是一个相对于敌人本身的位置。这是在你的渲染方法中:

enemyShot.draw(enemy1PosX+30, enemy1PosY + 65);

据我所知，在最好的情况下，这将使子弹跟随敌人的x和y位置，并产生少量位移。同时，你也拥有允许敌人移动的注释代码，即://enemy1PosX += delta * .7f; //enemy1PosY += delta * .1f;希望这对你有帮助!