well, here's how I calclate my speed
i tried,
but nothing happened.
x=x+Cos(yaw+90)*p\speed z=z+Sin(yaw+90)*p\speed
i tried,
x=x+Cos(yaw+90)*(p\speed*CollisionNY(p\pivot,terraincount)) z=z+Sin(yaw+90)*(p\speed*CollisionNY(p\pivot,terraincount))
but nothing happened.