旋转后的Libgdx坐标 [英] Libgdx Coordinates after rotateAround camera

问题描述

旋转相机后，坐标使我感到困惑.

After the camera rotation, the coordinates were confusing to me.

我有一个照相机，一个角色和一张地图. 该玩家只能朝以下方向行走:北(90°)，南(270°)，东(0°)，西(180°).

I have a camera a character and a map. This player walks only in the directions: north (90 °), south (270 °), east (0 °), west (180 °).

从播放器"camera.rotateAround(...，...，...)"的位置旋转了相机之后，由于旋转，播放器开始朝新的方向移动.

After rotating the camera from the position of the player 'camera.rotateAround (..., ..., ...)' the player starts to move in new directions as a result of rotation.

有没有一种方法可以将原始位置重新定位到坐标，而无需将地图移动到原始位置?

Is there a way to reposition the original back to the coordinates without moving the map to the original position?

• 注意:轨迹图是临时的，因此具有这些松散粘合的边缘.

感谢您的帮助.

推荐答案

首先，您需要存储地图的旋转角度. 然后，当玩家移动时，您需要考虑地图的旋转角度.

First you need to store rotation angle of map. Then when player moves you need to take account rotation angle of map.

camera.rotatearound(...)//I guess you rotating +90 or -90 in this game 
maprotation+=... //+90 or -90 depends on side you turn.
//i ll assume rotation direction is counter clock wise. 

现在您知道旋转了，因此可以使用三角函数设置播放器的运动.

Now you know rotation so you can set player movement with a trigonometry.

在player.moveup(float maprotation)方法中或您编写用于向北移动的代码的任何地方.

in player.moveup(float maprotation) method or whereever you wrote codes for moving to north.

x+=MathUtils.cosDeg(90-maprotation)*speed;//90 degree for moving up
y+=MathUtils.sinDeg(90-maprotation)*speed;// - maprotation for correction 

如您所见，当相机旋转时，方向也会旋转.因此，您只需要减去地图旋转即可进行校正.

As you can see when camera rotating also directions rotating. So you just need to subtract map rotation to correct.

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