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所以我目前正在尝试为一个类(class)制作游戏 Asteroids。问题是，自从上次上课以来，我已经有大约 3/4 年的时间没有编写任何代码，几乎忘记了我学到的所有东西。我需要使用推力/加速度来移动船，但也要加盖它，并有摩擦力，这样当推力停止时，船就会减速而不是立即停止。我在下面有关于旋转和加速飞船的基本数学知识。我很清楚编程正在将问题分解为简单的步骤，问题出现在这里我不知道下一步该去哪里。任何帮助将不胜感激。
// Ship's starting position
static double positionX = 500.0;
static double positionY = 500.0;
// Calculate ship heading vectors based on current orientation in Radians
static double orientationInRadians;
static double xVector = Math.Sin(orientationInRadians);
static double yVector = Math.Cos(orientationInRadians);
/*Use Left and Right arrows to rotate
Once vector is found,
calculate position of ship 10 units away from current position along heading vector
scale vector to a unit (length of 1) vector*/
static double magnitude = Math.Sqrt(xVector * xVector + yVector * yVector);
static double unitVectorX = xVector / magnitude;
static double unitVectorY = yVector / magnitude;
/*Now that the vector is one unit long
but still points in the ships current orientation
move ship with positionX and positionY as its current coordinates*/
static double distanceToTravel = 10.0;
double newPositionX = positionX + unitVectorX * distanceToTravel;
double newPositionY = positionY + unitVectorY * distanceToTravel;
/*Remember to track the ship's current position with a double or float
and make distanceToTravel non-constant for acceleration instead of "jumps"*/
编辑:我忘了说，这是我唯一的代码。所以我基本上只能用一个引擎来移动一些东西，但没有什么可移动的。