Question

我在为java爆发游戏编码碰撞检测方面遇到了一些问题。我试图解决碰撞的方法就是这个：

    public void runAsSeparateThread()
        {
            final float S = 3; // Units to move (Speed)
            try
            {
                synchronized ( Model.class ) // Make thread safe
                {
                    GameObj       ball   = getBall();     // Ball in game
                    GameObj       bat    = getBat();      // Bat
                    List<GameObj> bricks = getBricks();   // Bricks
                }

                while (runGame)
                {
                    synchronized ( Model.class ) // Make thread safe
                    {
                        float x = ball.getX();  // Current x,y position
                        float y = ball.getY();

                        // Deal with possible edge of board hit
                        if (x >= W - B - BALL_SIZE)  ball.changeDirectionX();
                        if (x <= 0 + B            )  ball.changeDirectionX();
                        if (y >= H - B - BALL_SIZE)  // Bottom
                        { 
                            ball.changeDirectionY(); addToScore( HIT_BOTTOM ); 
                        }
                        if (y <= 0 + M            )  ball.changeDirectionY();

                        // As only a hit on the bat/ball is detected it is 
                        //  assumed to be on the top or bottom of the object.
                        // A hit on the left or right of the object
                        //  has an interesting affect

                        boolean hit = false;

                        if ( y <= bricks.getY() - (brickHeight/2)){
                            hit = true;
                        }
                        if ( y >= bricks.getY() - (brickHeight/2)){
                            hit = true;
                        }
                        if ( x < bricks.getX()){
                            hit = true;
                        }
                        if ( x > bricks.getX()){
                            hit = true;
                        }

                        if (hit)
                            ball.changeDirectionY();

                        if ( ball.hitBy(bat) )
                            ball.changeDirectionY();
                    }
                    modelChanged();      // Model changed refresh screen
                    Thread.sleep( fast ? 2 : 20 );
                    ball.moveX(S);  ball.moveY(S);
                }
            } catch (Exception e) 
            { 
                Debug.error("Model.runAsSeparateThread - Error\n%s", 
                    e.getMessage() );
            }
          }

然而，从我上面的方法来看，当我试图获得X＆amp; Y来自砖块。它不断返回＆＃34;找不到符号 - 方法getY（）＆＃34;。然而，这种方法似乎适用于蝙蝠和球，但只会为砖块抛出此错误。

此部分代码抛出此错误：

boolean hit = false;

if ( y <= bricks.getY() - (brickHeight/2)){
    hit = true;
}
if ( y >= bricks.getY() - (brickHeight/2)){
    hit = true;
}
if ( x < bricks.getX()){
    hit = true;
}
if ( x > bricks.getX()){
    hit = true;
}

如果有人可以提供帮助，我会非常感激！

更新

for ( int i = 0; i <= 60; i++ ){
                    GameObj brick1 = bricks.get(i);

                    if ( y <= brick1.getY() - (BRICK_HEIGHT/2)){
                        hit = true;
                        Debug.trace("BreakOut");
                    }
                    if ( y >= brick1.getY() - (BRICK_HEIGHT/2)){
                        hit = true;
                        Debug.trace("BreakOut");
                    }
                    if ( x < brick1.getX()){
                        hit = true;
                        Debug.trace("BreakOut");
                    }
                    if ( x > brick1.getX()){
                        hit = true;
                        Debug.trace("BreakOut");
                    }
                }

Answer 1

private List<GameObj> bricks;  // The bricks

bricks是许多砖块的清单。你想要哪一块砖？

Java BreakOut碰撞检测 - 找不到符号

1 个答案: