what kind of the moving method of my actor will be the best way ?

my platform game,got slopes up and down,the platforms event have polygon shapes.
what kind of the moving method of my actor will be the best way ?

applyLinearImpulse,applyForce,setLinearVelocity…or something else ?

thanks a lot ? [import]uid: 21680 topic_id: 10775 reply_id: 310775[/import]