我正在使用Java开发一个Pacman街机游戏,但我的碰撞有问题。 如果您看到这里的图片,当访问角落或尝试返回它来时(即向左走但不再向右走),我的Pacman精灵会保持静止(没有x或y运动)。 我理解这是因为如果检测到碰撞(请参见collide()下的第二个代码块),我将xMovement设置为0,将yMovement设置为0。
如果我的collision()不允许此操作,我该如何让pacman精灵朝另一方向移动(例如从左侧进入并希望向右移动)或穿过一个角落?
以下是App.java类中的draw方法,根据用户的输入绘制玩家。 键盘wasd对应上、左、下、右。 这.direction仅用于在发生碰撞时防止玩家浪费移动或穿过墙壁。 *注意,我放置(this.player.x_ord + 2) % 16 == 0
,因为我的Pacman图像不是16x16图像,不像我的墙壁一样。
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
}
以下是我的player.java类 * 再次注意,
this.x_ord + 2 == w.x_pos + 16 && this.y_ord + 4 == w.y_pos
是偏移量,因为我的pacman精灵比我的16x16墙壁要大。 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。