玩家应该朝哪个方向旋转？

Question

我有两个角度，currentAngle和goalAngle。两个角度都在[0,360]之间。我需要一行代码，告诉我从currentAngle开始旋转的方式，以最便宜的方式达到goalAngle，旋转+1或-1度的成本为1美元。

这是我的代码的样子：

if( ??? ) { rotateClockwise(); }
else { rotateCounterclockwise(); }

Answer 1

<script type="text/javascript">
function rotateClockwise()
{
	alert('Clockwise');
}
function rotateCounterclockwise()
{
	alert('Counterclockwise');
}

function calc(currentAngle,goalAngle)
{
	if(isNaN(currentAngle)||isNaN(goalAngle)){alert('invalid angles');return false;}
	
	var diff=currentAngle-goalAngle;
	while (diff < -180) diff += 360;
	while (diff > 180) diff -= 360;
	if(diff<0){
		rotateClockwise();
	}else{
		rotateCounterclockwise();
	}
}
</script>
<input type="number" id="c" value="45" step="1">
<input type="number" id="g" value="75" step="1">
<input type="button" onclick="calc(parseFloat(document.getElementById('c').value),parseFloat(document.getElementById('g').value))" value="Calc">

Answer 2

        // Given the player's rotation, calculate which direction the player should rotate, if any.
    if(Math.abs(goalAngle - super.getRotY()) > ROTATION_ACCURACY){
        if(Math.abs(goalAngle - super.getRotY()) < 180){
            if(goalAngle - super.getRotY() < 0){ super.increaseRotation(0, -super.getTurnSpeed(), 0); }
            else{ super.increaseRotation(0, super.getTurnSpeed(), 0); } }
        else{ 
            if(goalAngle - super.getRotY() < 0){ super.increaseRotation(0, super.getTurnSpeed(), 0); }
            else{ super.increaseRotation(0, -super.getTurnSpeed(), 0); } } }