koobas.hobune.stream
How to roll a ball?
I am trying to make a ball rotate on floor with a touch joystick.Every time I try to roll the ball the local coordinates roll too! So when I add force,the ball gets stuck when z coordinate is pependicular to the floor so I cant move because I added force alond z coordinate.
Best Answer
Add force in the global xz plane (or torque if you want) and then modify with the camera's rotation like so:
var dir : Vector3 = Vector3(h, 0, v);
var cameraY : Quaternion = Quaternion.Euler(0, cameraTransform.rotation.eulerAngles.y, 0);
dir.y = 0;
dir = Vector3.Normalize(dir);
dir = cameraY * dir;
