Java中的Pacman冲突

我正在用Java制作一个pacman街机游戏，但是我的碰撞有问题。 如果你看到我的形象 我的“吃豆人”精灵在到达一个角落或试图返回它来的方向（即向左走但不再向右走）时静止不动（没有x或y移动）。我理解这是因为如果检测到冲突，我将xMovement设置为0，将yMovement设置为0（请参阅collide（）下的第二个代码块）

如果我的碰撞（）不允许，我将如何允许pacman sprite向另一个方向移动（即它从左侧移动，我希望它向右移动）或穿过一个角

下面是App.java类中的draw方法，它根据用户的输入绘制播放器。这些键分别对应于up、left、down和right。此方向仅用于在发生碰撞时，玩家不会浪费移动或穿墙*注意，我放置了

（this.player.x_ord+2）%16==0

，因为我的pacman图像不是一个16x16图像，而我的墙壁是

public void draw() { // This is an infinite loop
    mapDraw(); // this draws my map constantly so I do not have multiple pacman sprites drawn 
    this.player.tick(); // see second code below for details
    if (keyPressed){ // Used wasd rather than arrow keys
        if (key == 's' && this.direction != 's' && (this.player.x_ord + 2) % 16 == 0 && 
        (this.player.y_ord + 4) % 16 == 0){ // We dont want Player to turn ever on a non 16 divisible area
            this.player.p = this.loadImage("src/main/resources/playerDown.png");
            this.player.yMovement = this.player.speed;
            this.player.xMovement = 0;
            this.direction = 's';
        }
        else if (key == 'w' && this.direction != 'w' && (this.player.x_ord + 2) % 16 == 0 && 
        (this.player.y_ord + 4) % 16 == 0){
            this.player.p = this.loadImage("src/main/resources/playerUp.png");
            this.player.yMovement = -this.player.speed;
            this.player.xMovement = 0; // I do not want my pacman to move diagonally so thats why
            this.direction = 'w';

        }
        else if (key == 'd' && this.direction != 'd' && (this.player.x_ord + 2) % 16 == 0 && 
        (this.player.y_ord + 4) % 16 == 0){
            this.player.p = this.loadImage("src/main/resources/playerRight.png");
            this.player.xMovement = this.player.speed;
            this.player.yMovement = 0;
            this.direction = 'd';
        }
        else if (key == 'a' && this.direction != 'a' && (this.player.x_ord + 2) % 16 == 0 && 
        (this.player.y_ord + 4) % 16 == 0){
            this.player.p = this.loadImage("src/main/resources/playerLeft.png");
            this.player.xMovement = -this.player.speed;
            this.player.yMovement = 0;
            this.direction = 'a';
        }
    }
    this.player.draw(this); //see second code below for details
}

下面是我的player.java类 *再次注意，

this.x_ord+2==w.x_pos+16&&this.y_ord+4==w.y_pos

是偏移的，因为我的pacman精灵比我的16x16墙大

   public void tick(){
    // //logic   
    this.detectCollision();
    if (this.isLiving){
        this.y_ord += this.yMovement;
        this.x_ord += this.xMovement;
    }
}

public void draw(PApplet a){ //just draw the sprite
    if (this.isLiving){
        a.image(this.p, this.x_ord, this.y_ord);
    }
    
}

public void collide(boolean isX){ // Is it an x or y collision
    if (isX == true){ // If it moves left or right into a wall
        this.xMovement = 0;
    }
    else if (isX == false){ // If it moves up or down into a wall
        this.xMovement = 0;
    }
}

public void detectCollision(){
    for (Walls w: this.wallLocations){ // A list of wall locations from a .txt file
        if (this.x_ord + 2 == w.x_pos + 16 && this.y_ord + 4 == w.y_pos){ // Detect left movement into right wall piece
            collide(true);
        }

        if (this.x_ord + 2 + 16 == w.x_pos && this.y_ord + 4 == w.y_pos){ // Detect right movement into left wall piece
            collide(true);
        }

        if (this.y_ord + 4 == w.y_pos + 16 && this.x_ord + 2 == w.x_pos){ // Detect up movement into bottom wall piece
            collide(false);
        }

        if (this.y_ord + 4 + 16 == w.y_pos && this.x_ord + 2 == w.x_pos){ // Detect down movement into top wall piece
            collide(false);
        }
    }

---

非常感谢对我的问题的任何帮助。

我没有深入分析您的代码，但在我看来，您的主要问题是

碰撞

方法只考虑两种情况，垂直移动或水平移动。如果您想在4个不同的方向上移动，该方法需要有4个不同的状态

为了实现这一点，您可以创建一个表示方向的枚举。然后在

detectCollision

中，将适当的

方向

传递到

碰撞

。最后，在<代码>碰撞< /代码>中考虑4个不同的方向。例如，如果右侧有障碍物，

xMovement

需要为非正。

collide

方法可能如下所示：

public void collide(Direction direction){ 
    if (direction == Direction.RIGHT){ 
        this.xMovement = Math.min(0, this.xMovement);
    }
    if (direction == Direction.LEFT){ 
        this.xMovement = Math.max(0, this.xMovement);
    }
    if (direction == Direction.UP){ 
        this.yMovement = Math.min(0, this.yMovement);
    }
    if (direction == Direction.DOWN){ 
        this.yMovement = Math.max(0, this.yMovement);
    }
}

---

极好的解决方案！我在代码示例中对Direction.UP和Direction.DOWN进行了微调（因为.UP随yMovement减小，.DOWN随yMovement增大），并按预期工作。