问题
After the camera rotation, the coordinates were confusing to me.
I have a camera a character and a map. This player walks only in the directions: north (90 °), south (270 °), east (0 °), west (180 °).
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.
Is there a way to reposition the original back to the coordinates without moving the map to the original position?
- Note: The track map is temporary then have these loosely glued edges.
I appreciate the help.
回答1:
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.
Now you know rotation so you can set player movement with a trigonometry.
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
As you can see when camera rotating also directions rotating. So you just need to subtract map rotation to correct.
来源：https://stackoverflow.com/questions/38975166/libgdx-coordinates-after-rotatearound-camera