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#1 Try %obj.setLinearVelocityPolar( %angle, speed );

#2 Thanks

#3 If you want to always move in the direction you're facing then you could also look at the commands "setForwardMovementOnly()" and "setForwardSpeed()".

These are a little more advanced and can be confusing if you're just starting but they can be very useful for projectiles and anything that needs to move in a "facing" direction.

- Melv.