Question

我是java和游戏编程的新手，我开始了我的第一个大型项目，这是一个2D平台益智游戏。这是我的玩家动作代码

  if (speedX > 0 && centerX <= 400){
     centerX += speedX;
  }

  if (speedX < 0 && centerX >= 400){
     centerX += speedX;
  }

  if (speedX > 0 && centerX >= 400){
     bg1.setSpeedX(-MOVESPEED);
     bg2.setSpeedX(-MOVESPEED);
  }

  if (speedX < 0 && centerX <= 400){
     bg1.setSpeedX(MOVESPEED);
     bg2.setSpeedX(MOVESPEED);
  }

  if (speedX == 0){
     bg1.setSpeedX(0);
     bg2.setSpeedX(0);
  }

  if(movingRight == true && movingLeft == true ){
     bg1.setSpeedX(0);
     bg2.setSpeedX(0);
  }

  // Handles Jumping
  if (jumped == true) {
     speedY += 1;


  }

  // Prevents going beyond X coordinate of 0
  if (centerX + speedX <= 60) {
     centerX = 61;
  }
  rect.setRect(centerX - 47, centerY - 65, 32, 87);

  centerY += speedY;
 }

 public void moveRight() {
        speedX = MOVESPEED;      

 }

 public void moveLeft() {
       speedX = -MOVESPEED;
 }

 public void stopRight() {
    movingRight = false;
    stop();
   }

 public void stopLeft() {
   movingLeft = false;
    stop();
 }

 private void stop() {
  if (movingRight == false && movingLeft == false) {
     speedX = 0;
  }
  if (movingRight == false && movingLeft == true) {
     moveLeft();
  }

  if (movingRight == true && movingLeft == false) {
     moveRight();
  }
}



 public void jump() {
  if (jumped == false) {
     speedY = JUMPSPEED;
     jumped = true;
  }

}

这是碰撞代码

public void checkCollision(Rectangle rect){
   if (rect.intersects(r)){
      if(Player.movingRight){
      Player.centerX = tileX + 11;
      Player.speedX =0;
      }

      if(Player.movingLeft){
      Player.centerX = tileX + 89;
      Player.speedX = 0;
      }

      if(Player.speedY > 0){
         Player.centerY = tileY - 25;
         Player.speedY = 0;
         Player.jumped = false;
      }
   }

}

有两个问题。第一个是如果我在登陆角色时按下其中一个移动键＆＃34;传送＆＃34;向右或向左。我知道发生这种情况是因为我编程了如果角色与地面相交而moveRight或movingLeft是真的他向右或向左移动。（我这样做，所以水平碰撞会起作用）我想不出任何其他方式做它或如何解决它。

第二个问题是，如果角色移动平台，他就不会摔倒。我尝试通过添加碰撞方法来修复它

else{
speedY += 1;
}

但它让角色因某种原因消失了。

非常感谢！

Answer 1

此代码最初是用C ++编写的，用于3D平台游戏。我重写了它，但可能有一些错误。如果难以理解，我可以稍后画一幅画。

public void checkCollision(Rectangle rect){
    if(player.intersects(rect)) {
        //the rectangles intersect, time to move the player out of the block
        if(rect.y+rect.height >= player.y && rect.y+rect.height-0.7f < player.y) { //if the player is at most 0.7 units (you should change this!) below top side
            player.y = rect.y+rect.height; //set player to stand on top
            speed.y = 0f; //stop the movement
            onGround = true;
        } else if(rect.y+rect.height > player.y && rect.y < player.y+player.height) { //if the playeer is on the side, but not below
            float xEscMinus = (float)Math.abs((rect.x+rect.width)-player.x); //find the distance to the side
            float xEscPlus  = (float)Math.abs(rect.x-(player.x+player.width));

            if(xEscMinus<xEscPlus) {
                player.x = rect.x+rect.width;
            } else {
                player.x = rect.x-player.width;
            }
        }
    }
}

2D平台游戏中的碰撞错误

1 个答案: